stage1_2/iec_flex.ll
author mjsousa
Sat, 27 Dec 2014 09:41:01 +0000
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parent 952 e984cfdf3b10
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/*
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 *  matiec - a compiler for the programming languages defined in IEC 61131-3
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 *
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 *  Copyright (C) 2003-2011  Mario de Sousa (msousa@fe.up.pt)
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 *
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 *  This program is free software: you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation, either version 3 of thest_whitespaceLicense, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 *
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 * This code is made available on the understanding that it will not be
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 * used in safety-critical situations without a full and competent review.
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 */
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/*
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 * An IEC 61131-3 compiler.
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 *
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 * Based on the
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 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
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 *
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 */
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/*
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 * Stage 1
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 * =======
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 *
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 * This file contains the lexical tokens definitions, from which
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 * the flex utility will generate a lexical parser function.
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 */
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/*****************************/
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/* Lexical Parser Options... */
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/*****************************/
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/* The lexical analyser will never work in interactive mode,
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 * i.e., it will only process programs saved to files, and never
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 * programs being written inter-actively by the user.
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 * This option saves the resulting parser from calling the
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 * isatty() function, that seems to be generating some compile
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 * errors under some (older?) versions of flex.
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 */
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%option never-interactive
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/* Have the lexical analyser use a 'char *yytext' instead of an
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 * array of char 'char yytext[??]' to store the lexical token.
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 */
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%pointer
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/* Have the lexical analyser ignore the case of letters.
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 * This will occur for all the tokens and keywords, but
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 * the resulting text handed up to the syntax parser
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 * will not be changed, and keep the original case
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 * of the letters in the input file.
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 */
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%option case-insensitive
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/* Have the generated lexical analyser keep track of the
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 * line number it is currently analysing.
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 * This is used to pass up to the syntax parser
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 * the number of the line on which the current
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 * token was found. It will enable the syntax parser
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 * to generate more informatve error messages...
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 */
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%option yylineno
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/* required for the use of the yy_pop_state() and
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 * yy_push_state() functions
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 */
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%option stack
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/* The '%option stack' also requests the inclusion of 
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 * the yy_top_state(), however this function is not
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 * currently being used. This means that the compiler
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 * is complaining about the existance of this function.
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 * The following option removes the yy_top_state()
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 * function from the resulting c code, so the compiler 
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 * no longer complains.
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 */
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%option noyy_top_state
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/* We will be using unput() in our flex code, so we cannot set the following option!... */
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/*
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%option nounput
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*/
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0
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/**************************************************/
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/* External Variable and Function declarations... */
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/**************************************************/
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%{
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/* Define TEST_MAIN to include a main() function.
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 * Useful for testing the parser generated by flex.
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 */
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/*
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#define TEST_MAIN
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*/
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/* If lexical parser is compiled by itself, we need to define the following
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 * constant to some string. Under normal circumstances LIBDIRECTORY is set
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 * in the syntax parser header file...
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 */
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#ifdef TEST_MAIN
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#define DEFAULT_LIBDIR "just_testing"
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#endif
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/* Required for strdup() */
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#include <string.h>
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/* Required only for the declaration of abstract syntax classes
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 * (class symbol_c; class token_c; class list_c;)
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 * These will not be used in flex, but the token type union defined
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 * in iec_bison.hh contains pointers to these classes, so we must include
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 * it here.
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 */
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#include "../absyntax/absyntax.hh"
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/* iec_bison.hh is generated by bison.
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 * Contains the definition of the token constants, and the
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 * token value type YYSTYPE (in our case, a 'const char *')
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 */
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#include "iec_bison.hh"
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#include "stage1_2_priv.hh"
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/* Variable defined by the bison parser,
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 * where the value of the tokens will be stored
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 */
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extern YYSTYPE yylval;
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/* The name of the file currently being parsed...
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 * Note that flex accesses and updates this global variable
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 * apropriately whenever it comes across an (*#include <filename> *) directive...
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 */
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const char *current_filename = NULL;
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/* We will not be using unput() in our flex code... */
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/* NOTE: it seems that this #define is no longer needed, It has been 
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 * replaced by %option nounput.
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 * Should we simply delete it?
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 * For now leave it in, in case someone is using an old version of flex.
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 * In any case, the most harm that can result in a warning message
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 * when compiling iec.flex.c:
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 * warning: ‘void yyunput(int, char*)’ defined but not used
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 */
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#define YY_NO_UNPUT
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/* Variable defined by the bison parser.
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 * It must be initialised with the location
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 * of the token being parsed.
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 * This is only needed if we want to keep
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 * track of the locations, in order to give
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 * more meaningful error messages!
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 */
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/*
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 *extern YYLTYPE yylloc;
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b*/
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#define YY_INPUT(buf,result,max_size)  {\
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    result = GetNextChar(buf, max_size);\
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    if (  result <= 0  )\
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      result = YY_NULL;\
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    }
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/* Macro that is executed for every action.
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 * We use it to pass the location of the token
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 * back to the bison parser...
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 */
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#define YY_USER_ACTION {\
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	yylloc.first_line = current_tracking->lineNumber;			\
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	yylloc.first_column = current_tracking->currentTokenStart;		\
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	yylloc.first_file = current_filename;					\
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	yylloc.first_order = current_order;					\
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	yylloc.last_line = current_tracking->lineNumber;			\
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	yylloc.last_column = current_tracking->currentChar - 1;			\
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	yylloc.last_file = current_filename;					\
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	yylloc.last_order = current_order;					\
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	current_tracking->currentTokenStart = current_tracking->currentChar;	\
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	current_order++;							\
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	}
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0
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/* Since this lexical parser we defined only works in ASCII based
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 * systems, we might as well make sure it is being compiled on
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 * one...
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 * Lets check a few random characters...
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 */
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#if (('a' != 0x61) || ('A' != 0x41) || ('z' != 0x7A) || ('Z' != 0x5A) || \
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     ('0' != 0x30) || ('9' != 0x39) || ('(' != 0x28) || ('[' != 0x5B))
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#error This lexical analyser is not portable to a non ASCII based system.
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#endif
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/* Function only called from within flex, but defined
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 * in iec.y!
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 * We declare it here...
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 *
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 * Search for a symbol in either of the two symbol tables
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 * and return the token id of the first symbol found.
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 * Searches first in the variables, and only if not found
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 * does it continue searching in the library elements
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 */
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//token_id_t get_identifier_token(const char *identifier_str);
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int get_identifier_token(const char *identifier_str);
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%}
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/***************************************************/
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/* Forward Declaration of functions defined later. */
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/***************************************************/
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%{
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/* return all the text in the current token back to the input stream. */
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void unput_text(unsigned int n);
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/* return all the text in the current token back to the input stream, 
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 * but first return to the stream an additional character to mark the end of the token. 
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 */
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void unput_and_mark(const char c);
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634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
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void include_file(const char *include_filename);
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int GetNextChar(char *b, int maxBuffer);
0
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%}
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/****************************/
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/* Lexical Parser States... */
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/****************************/
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/* NOTE: Our psrser can parse st or il code, intermixed
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 *       within the same file.
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 *       With IL we come across the issue of the EOL (end of line) token.
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 *       ST, and the declaration parts of IL do not use this token!
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 *       If the lexical analyser were to issue this token during ST
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 *       language parsing, or during the declaration of data types,
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 *       function headers, etc. in IL, the syntax parser would crash.
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 *
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 *       We can solve this issue using one of three methods:
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 *        (1) Augment all the syntax that does not accept the EOL
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 *            token to simply ignore it. This makes the syntax
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 *            definition (in iec.y) very cluttered!
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 *        (2) Let the lexical parser figure out which language
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 *            it is parsing, and decide whether or not to issue
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 *            the EOL token. This requires the lexical parser
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 *            to have knowledge of the syntax!, making for a poor
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 *            overall organisation of the code. It would also make it
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   266
 *            very difficult to understand the lexical parser as it
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   267
 *            would use several states, and a state machine to transition
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   268
 *            between the states. The state transitions would be
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   269
 *            intermingled with the lexical parser defintion!
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   270
 *        (3) Use a mixture of (1) and (2). The lexical analyser
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   271
 *            merely distinguishes between function headers and function
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   272
 *            bodies, but no longer makes a distinction between il and
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   273
 *            st language bodies. When parsing a body, it will return
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   274
 *            the EOL token. In other states '\n' will be ignored as
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   275
 *            whitespace.
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   276
 *            The ST language syntax has been augmented in the syntax
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   277
 *            parser configuration to ignore any EOL tokens that it may
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   278
 *            come across!
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   279
 *            This option has both drawbacks of option (1) and (2), but
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   280
 *            much less intensely.
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   281
 *            The syntax that gets cluttered is limited to the ST statements
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   282
 *            (which is rather limited, compared to the function headers and
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   283
 *            data type declarations, etc...), while the state machine in
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   284
 *            the lexical parser becomes very simple. All state transitions
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   285
 *            can be handled within the lexical parser by itself, and can be
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   286
 *            easily identified. Thus knowledge of the syntax required by
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   287
 *            the lexical parser is very limited!
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   288
 *
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   289
 * Amazingly enough, I (Mario) got to implement option (3)
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   290
 * at first, requiring two basic states, decl and body.
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   291
 * The lexical parser will enter the body state when
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   292
 * it is parsing the body of a function/program/function block. The
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   293
 * state transition is done when we find a VAR_END that is not followed
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   294
 * by a VAR! This is the syntax knowledge that gets included in the
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   295
 * lexical analyser with this option!
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etisserant
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   296
 * Unfortunately, getting the st syntax parser to ignore EOL anywhere
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   297
 * where they might appear leads to conflicts. This is due to the fact
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   298
 * that the syntax parser uses the single look-ahead token to remove
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   299
 * possible conflicts. When we insert a possible EOL, the single
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   300
 * look ahead token becomes the EOL, which means the potential conflicts
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   301
 * could no longer be resolved.
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etisserant
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   302
 * Removing these conflicts would make the st syntax parser very convoluted,
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   303
 * and adding the extraneous EOL would make it very cluttered.
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   304
 * This option was therefore dropped in favour of another!
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etisserant
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   305
 *
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   306
 * I ended up implementing (2). Unfortunately the lexical analyser can
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   307
 * not easily distinguish between il and st code, since function
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   308
 * calls in il are very similar to function block calls in st.
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   309
 * We therefore use an extra 'body' state. When the lexical parser
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   310
 * finds that last END_VAR, it enters the body state. This state
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   311
 * must figure out what language is being parsed from the first few
68
b0a43002dcac Adding basic error checking.
mario
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diff changeset
   312
 * tokens, and switch to the correct state (st, il or sfc) according to the
0
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   313
 * language. This means that we insert quite a bit of knowledge of the
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   314
 * syntax of the languages into the lexical parser. This is ugly, but it
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   315
 * works, and at least it is possible to keep all the state changes together
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   316
 * to make it easier to remove them later on if need be.
68
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mario
parents: 58
diff changeset
   317
 * Once the language being parsed has been identified, 
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mario
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diff changeset
   318
 * the body state returns any matched text back to the buffer with unput(),
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mario
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diff changeset
   319
 * to be later matched correctly by the apropriate language parser (st, il or sfc).
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mario
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diff changeset
   320
 *
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mario
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diff changeset
   321
 * Aditionally, in sfc state it may further recursively enter the body state
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mario
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diff changeset
   322
 * once again. This is because an sfc body may contain ACTIONS, which are then
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mario
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diff changeset
   323
 * written in one of the three languages (ST, IL or SFC), so once again we need
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mario
parents: 58
diff changeset
   324
 * to figure out which language the ACTION in the SFC was written in. We already
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mario
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diff changeset
   325
 * ahve all that done in the body state, so we recursively transition to the body 
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mario
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diff changeset
   326
 * state once again.
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mario
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diff changeset
   327
 * Note that in this case, when coming out of the st/il state (whichever language
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mario
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diff changeset
   328
 * the action was written in) the sfc state will become active again. This is done by
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mario
parents: 58
diff changeset
   329
 * pushing and poping the previously active state!
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mario
parents: 58
diff changeset
   330
 *
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mario
parents: 58
diff changeset
   331
 * The sfc_qualifier_state is required because when parsing actions within an
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mario
parents: 58
diff changeset
   332
 * sfc, we will be expecting action qualifiers (N, P, R, S, DS, SD, ...). In order
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mario
parents: 58
diff changeset
   333
 * to bison to work correctly, these qualifiers must be returned as tokens. However,
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mario
parents: 58
diff changeset
   334
 * these tokens are not reserved keywords, which means it should be possible to
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mario
parents: 58
diff changeset
   335
 * define variables/functions/FBs with any of these names (including 
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mario
parents: 58
diff changeset
   336
 * S and R which are special because they are also IL operators). So, when we are not
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mario
parents: 58
diff changeset
   337
 * expecting any action qualifiers, flex does not return these tokens, and is free
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mario
parents: 58
diff changeset
   338
 * to interpret them as previously defined variables/functions/... as the case may be.
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mario
parents: 58
diff changeset
   339
 *
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   340
 * The time_literal_state is required because TIME# literals are decomposed into 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   341
 * portions, and wewant to send these portions one by one to bison. Each poertion will 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   342
 * represent the value in days/hours/minutes/seconds/ms.
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   343
 * Unfortunately, some of these portions may also be lexically analysed as an identifier. So,
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   344
 * we need to disable lexical identification of identifiers while parsing TIME# literals!
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   345
 * e.g.:  TIME#55d_4h_56m
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   346
 *       We would like to return to bison the tokens 'TIME' '#' '55d' '_' '4h' '_' '56m'
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   347
 *       Unfortunately, flex will join '_' and '4h' to create a legal {identifier} '_4h',
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   348
 *       and return that identifier instead! So, we added this state!
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   349
 *
952
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mjsousa
parents: 948
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   350
 * The ignore_pou_state state is only used when bison says it is doing the pre-parsing.
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mjsousa
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diff changeset
   351
 * During pre-parsing, the main state machine will only transition between
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mjsousa
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diff changeset
   352
 * INITIAL and ignore_pou_state, and from here back to INITIAL. All other
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mjsousa
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diff changeset
   353
 * transitions are inhibited. This inhibition is actually just enforced by making
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mjsousa
parents: 948
diff changeset
   354
 * sure that the INITIAL ---> ignore_pou_state transition is tested before all other
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   355
 * transitions coming out of INITIAL state. All other transitions are unaffected, as they
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   356
 * never get a chance to be evaluated when bison is doing pre-parsing.
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   357
 * Pre-parsing is a first quick scan through the whole input source code simply
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   358
 * to determine the list of POUs and datatypes that will be defined in that
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   359
 * code. Basically, the objective is to fill up the previously_declared_xxxxx
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mjsousa
parents: 948
diff changeset
   360
 * maps, without processing the code itself. Once these maps have been filled up,
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   361
 * bison will throw away the AST (abstract syntax tree) created up to that point, 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   362
 * and scan through the same source code again, but this time creating a correct AST.
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   363
 * This pre-scan allows the source code to reference POUs and datatypes that are
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   364
 * only declared after they are used!
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   365
 * 
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   366
 *
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   367
 * Here is a main state machine...
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   368
 *                                                                         --+  
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
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   369
 *                                                                           |  these states are
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mjsousa
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   370
 *              +------------> get_pou_name_state  ----> ignore_pou_state    |  only active 
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diff changeset
   371
 *              |                                            |               |  when bison is 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   372
 *              |  ------------------------------------------+               |  doing the 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
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diff changeset
   373
 *              |  |                                                         |  pre-parsing!!
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
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diff changeset
   374
 *              |  v                                                       --+
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   375
 *       +---> INITIAL <-------> config
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
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diff changeset
   376
 *       |        \
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mjsousa
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diff changeset
   377
 *       |        V
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mjsousa
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diff changeset
   378
 *       |   header_state
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
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diff changeset
   379
 *       |        |
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mjsousa
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diff changeset
   380
 *       |        V
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mjsousa
parents: 867
diff changeset
   381
 *     vardecl_list_state <------> var_decl
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
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diff changeset
   382
 *       ^        | 
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mjsousa
parents: 867
diff changeset
   383
 *       |        | [using push()]
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mjsousa
parents: 867
diff changeset
   384
 *       |        |
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mjsousa
parents: 867
diff changeset
   385
 *       |        V
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mjsousa
parents: 867
diff changeset
   386
 *       |       body, 
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mjsousa
parents: 867
diff changeset
   387
 *       |        |
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mjsousa
parents: 867
diff changeset
   388
 *       |        | 
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mjsousa
parents: 867
diff changeset
   389
 *       |   -------------------
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mjsousa
parents: 867
diff changeset
   390
 *       |   |       |         |
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   391
 *       |   v       v         v
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   392
 *       |  st      il        sfc
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   393
 *       |   |       |         |  [using pop() when leaving st/il/sfc => goes to vardecl_list_state]
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   394
 *       |   |       |         |
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   395
 *       -----------------------
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   396
 *
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   397
 * NOTE:- When inside sfc, and an action or transition in ST/IL is found, then 
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   398
 *        we also push() to the body state. This means that sometimes, when pop()ing
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   399
 *        from st and il, the state machine may return to the sfc state!
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   400
 *      - The transitions form sfc to body will be decided by bison, which will
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   401
 *        tell flex to do the transition by calling cmd_goto_body_state().
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   402
 *   
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   403
 * 
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   404
 * Possible state changes are:
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   405
 *   INITIAL -> goto(ignore_pou_state)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   406
 *               (This transition state is only used when bison says it is doing the pre-parsing.)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   407
 *               (This transition takes precedence over all other transitions!)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   408
 *               (when a FUNCTION, FUNCTION_BLOCK, PROGRAM or CONFIGURATION is found)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   409
 * 
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   410
 *   INITIAL -> goto(config_state)
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   411
 *                (when a CONFIGURATION is found)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   412
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   413
 *   INITIAL -> goto(header_state)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   414
 *               (when a FUNCTION, FUNCTION_BLOCK, or PROGRAM is found)
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   415
 * 
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   416
 *   header_state -> goto(vardecl_list_state)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   417
 *               (When the first VAR token is found, i.e. at begining of first VAR .. END_VAR declaration)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   418
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   419
 *  vardecl_list_state -> push current state (vardecl_list_state), and goto(vardecl_state) 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   420
 *                (when a VAR token is found)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   421
 *   vardecl_state -> pop() to (vardecl_list_state) 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   422
 *                (when a END_VAR token is found)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   423
 * 
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   424
 *   vardecl_list_state -> push current state (vardecl_list_state), and goto(body_state) 
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   425
 *                (when the last END_VAR is found!)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   426
 *
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   427
 *   body_state    -> goto(sfc_state)
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   428
 *                     (when it figures out it is parsing sfc language)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   429
 *   body_state    -> goto(st_state)
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   430
 *                     (when it figures out it is parsing st language)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   431
 *   body_state    -> goto(il_state)
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   432
 *                     (when it figures out it is parsing il language)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   433
 *   st_state      -> pop() to vardecl_list_state
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   434
 *                     (when a END_FUNCTION, END_FUNCTION_BLOCK, END_PROGRAM,
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   435
 *                      END_ACTION or END_TRANSITION is found)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   436
 *   il_state      -> pop() to vardecl_list_state
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   437
 *                     (when a END_FUNCTION, END_FUNCTION_BLOCK, END_PROGRAM,
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   438
 *                      END_ACTION or END_TRANSITION is found)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   439
 *   sfc_state     -> pop() to vardecl_list_state
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   440
 *                     (when a END_FUNCTION, END_FUNCTION_BLOCK, or END_PROGRAM is found)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   441
 * 
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   442
 *   ignore_pou_state   -> goto(INITIAL)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   443
 *                         (when a END_FUNCTION, END_FUNCTION_BLOCK, END_PROGRAM or END_CONFIGURATION is found)
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   444
 *   vardecl_list_state -> goto(INITIAL)
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   445
 *                         (when a END_FUNCTION, END_FUNCTION_BLOCK, or END_PROGRAM is found)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   446
 *   config_state       -> goto(INITIAL)
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   447
 *                         (when a END_CONFIGURATION is found)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   448
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   449
 *  
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   450
 *   sfc_state     -> push current state(sfc_state); goto(body_state)
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   451
 *                     (when parsing an action. This transition is requested by bison)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   452
 *   sfc_state     -> push current state(sfc_state); goto(sfc_qualifier_state)
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   453
 *                     (when expecting an action qualifier. This transition is requested by bison)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   454
 *   sfc_qualifier_state -> pop() to sfc_state
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   455
 *                     (when no longer expecting an action qualifier. This transition is requested by bison)
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   456
 *
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   457
 *   config_state  -> push(config_state); goto(task_init_state)
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   458
 *                     (when parsing a task initialisation. This transition is requested by bison)
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   459
 *   task_init_state -> pop()
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   460
 *                     (when no longer parsing task initialisation parameters. This transition is requested by bison)
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   461
 *
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   462
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   463
 * There is another secondary state machine for parsing comments, another for file_includes, 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   464
 * and yet another for time literals.
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   465
 */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   466
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   467
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   468
/* Bison is in the pre-parsing stage, and we are parsing a POU. Ignore everything up to the end of the POU! */
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   469
%x ignore_pou_state
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   470
%x get_pou_name_state
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
   471
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   472
/* we are parsing a configuration. */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
   473
%s config_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   474
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   475
/* Inside a configuration, we are parsing a task initialisation parameters */
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   476
/* This means that PRIORITY, SINGLE and INTERVAL must be handled as
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   477
 * tokens, and not as possible identifiers. Note that the above words
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   478
 * are not keywords.
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   479
 */
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   480
%s task_init_state
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   481
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   482
/* we are looking for the first VAR inside a function's, program's or function block's declaration */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   483
/* This is not exclusive (%x) as we must be able to parse the identifier and data types of a function/FB */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   484
%s header_state
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   485
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   486
/* we are parsing a function, program or function block sequence of VAR..END_VAR delcarations */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   487
%x vardecl_list_state 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   488
/* a substate of the vardecl_list_state: we are inside a specific VAR .. END_VAR */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   489
%s vardecl_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   490
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   491
/* we will be parsing a function body/action/transition. Whether il/st/sfc remains to be determined */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   492
%x body_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   493
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   494
/* we are parsing il code -> flex must return the EOL tokens!       */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
   495
%s il_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   496
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   497
/* we are parsing st code -> flex must not return the EOL tokens!   */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
   498
%s st_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   499
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   500
/* we are parsing sfc code -> flex must not return the EOL tokens!  */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
   501
%s sfc_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   502
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   503
/* we are parsing sfc code, and expecting an action qualifier.      */
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   504
%s sfc_qualifier_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   505
86
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   506
/* we are parsing sfc code, and expecting the priority token.       */
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   507
%s sfc_priority_state
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   508
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   509
/* we are parsing a TIME# literal. We must not return any {identifier} tokens. */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   510
%x time_literal_state
75
0e381bdb8888 Fixing handling of task initialisation.
mario
parents: 74
diff changeset
   511
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   512
/* we are parsing a comment. */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   513
%x comment_state
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   514
75
0e381bdb8888 Fixing handling of task initialisation.
mario
parents: 74
diff changeset
   515
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   516
/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   517
/* File #include's */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   518
/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   519
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   520
/* We extend the IEC 61131-3 standard syntax to allow inclusion
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   521
 * of other files, using the IEC 61131-3 pragma directive...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   522
 * The accepted syntax is:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   523
 *  {#include "<filename>"}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   524
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   525
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   526
/* the "include" states are used for picking up the name of an include file */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   527
%x include_beg
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   528
%x include_filename
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   529
%x include_end
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   530
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   531
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   532
file_include_pragma_filename	[^\"]*
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   533
file_include_pragma_beg		"{#include"{st_whitespace}\"
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   534
file_include_pragma_end		\"{st_whitespace}"}"
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   535
file_include_pragma			{file_include_pragma_beg}{file_include_pragma_filename}{file_include_pragma_end}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   536
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   537
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   538
%{
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   539
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   540
/* A counter to track the order by which each token is processed.
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   541
 * NOTE: This counter is not exactly linear (i.e., it does not get incremented by 1 for each token).
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   542
 *       i.e.. it may get incremented by more than one between two consecutive tokens.
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   543
 *       This is due to the fact that the counter gets incremented every 'user action' in flex,
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   544
 *       however not every user action will result in a token being passed to bison.
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   545
 *       Nevertheless this is still OK, as we are only interested in the relative
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   546
 *       ordering of tokens...
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   547
 */
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   548
static long int current_order = 0;
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   549
  
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   550
typedef struct {
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   551
    int eof;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   552
    int lineNumber;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   553
    int currentChar;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   554
    int lineLength;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   555
    int currentTokenStart;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   556
    char *buffer;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   557
    FILE *in_file;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   558
  } tracking_t;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   559
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   560
/* A forward declaration of a function defined at the end of this file. */
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   561
void FreeTracking(tracking_t *tracking);
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   562
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   563
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   564
#define MAX_INCLUDE_DEPTH 16
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
   565
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   566
typedef struct {
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   567
	  YY_BUFFER_STATE buffer_state;
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   568
	  tracking_t *env;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   569
	  const char *filename;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   570
	} include_stack_t;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   571
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
   572
tracking_t *current_tracking = NULL;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   573
include_stack_t include_stack[MAX_INCLUDE_DEPTH];
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   574
int include_stack_ptr = 0;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   575
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   576
const char *INCLUDE_DIRECTORIES[] = {
40
873a5b60a7ea Fixed -I library include path behavior + removed old lib implementation + added generated lib func names to stage 1_2 + added Makefile.Linux
etisserant
parents: 15
diff changeset
   577
	DEFAULT_LIBDIR,
873a5b60a7ea Fixed -I library include path behavior + removed old lib implementation + added generated lib func names to stage 1_2 + added Makefile.Linux
etisserant
parents: 15
diff changeset
   578
	".",
873a5b60a7ea Fixed -I library include path behavior + removed old lib implementation + added generated lib func names to stage 1_2 + added Makefile.Linux
etisserant
parents: 15
diff changeset
   579
	"/lib",
873a5b60a7ea Fixed -I library include path behavior + removed old lib implementation + added generated lib func names to stage 1_2 + added Makefile.Linux
etisserant
parents: 15
diff changeset
   580
	"/usr/lib",
873a5b60a7ea Fixed -I library include path behavior + removed old lib implementation + added generated lib func names to stage 1_2 + added Makefile.Linux
etisserant
parents: 15
diff changeset
   581
	"/usr/lib/iec",
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   582
	NULL /* must end with NULL!! */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   583
	};
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   584
%}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   585
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   586
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   587
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   588
/*****************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   589
/* Prelimenary constructs... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   590
/*****************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   591
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   592
/* PRAGMAS */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   593
/* ======= */
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   594
/* In order to allow the declaration of POU prototypes (Function, FB, Program, ...),
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   595
 * especially the prototypes of Functions and FBs defined in the standard
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   596
 * (i.e. standard functions and FBs), we extend the IEC 61131-3 standard syntax 
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   597
 * with two pragmas to indicate that the code is to be parsed (going through the 
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   598
 * lexical, syntactical, and semantic analysers), but no code is to be generated.
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   599
 * 
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   600
 * The accepted syntax is:
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   601
 *  {no_code_generation begin}
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   602
 *    ... prototypes ...
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   603
 *  {no_code_generation end}
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   604
 * 
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   605
 * When parsing these prototypes the abstract syntax tree will be populated as usual,
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   606
 * allowing the semantic analyser to correctly analyse the semantics of calls to these
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   607
 * functions/FBs. However, stage4 will simply ignore all IEC61131-3 code
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   608
 * between the above two pragmas.
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   609
 */
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   610
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   611
disable_code_generation_pragma	"{disable code generation}"
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   612
enable_code_generation_pragma	"{enable code generation}"
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   613
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   614
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   615
/* Any other pragma... */
869
d88f47549408 fix definition of pragma.
mjsousa
parents: 868
diff changeset
   616
pragma ("{"[^}]*"}")|("{{"([^}]|"}"[^}])*"}}")
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   617
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   618
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   619
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   620
/* COMMENTS */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   621
/* ======== */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   622
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   623
/* In order to allow nested comments, comments are handled by a specific comment_state state */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   624
/* Whenever a "(*" is found, we push the current state onto the stack, and enter a new instance of the comment_state state.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   625
 * Whenever a "*)" is found, we pop a state off the stack
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   626
 */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   627
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   628
/* comments... */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   629
comment_beg  "(*"
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   630
comment_end  "*)"
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   631
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   632
/* However, bison has a shift/reduce conflict in bison, when parsing formal function/FB
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   633
 * invocations with the 'NOT <variable_name> =>' syntax (which needs two look ahead 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   634
 * tokens to be parsed correctly - and bison being LALR(1) only supports one).
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   635
 * The current work around requires flex to completely parse the '<variable_name> =>'
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   636
 * sequence. This sequence includes whitespace and/or comments between the 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   637
 * <variable_name> and the "=>" token.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   638
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   639
 * This flex rule (sendto_identifier_token) uses the whitespace/comment as trailing context,
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   640
 * which means we can not use the comment_state method of specifying/finding and ignoring 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   641
 * comments.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   642
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   643
 * For this reason only, we must also define what a complete comment looks like, so
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   644
 * it may be used in this rule. Since the rule uses the whitespace_or_comment
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   645
 * construct as trailing context, this definition of comment must not use any
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   646
 * trailing context either.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   647
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   648
 * Aditionally, it is not possible to define nested comments in flex without the use of
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   649
 * states, so for this particular location, we do NOT support nested comments.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   650
 */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   651
/* NOTE: this seemingly unnecessary complex definition is required
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   652
 *       to be able to eat up comments such as:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   653
 *          '(* Testing... ! ***** ******)'
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   654
 *       without using the trailing context command in flex (/{context})
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   655
 *       since {comment} itself will later be used with
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   656
 *       trailing context ({comment}/{context})
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   657
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   658
not_asterisk				[^*]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   659
not_close_parenthesis_nor_asterisk	[^*)]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   660
asterisk				"*"
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   661
comment_text	({not_asterisk})|(({asterisk}+){not_close_parenthesis_nor_asterisk})
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   662
comment		"(*"({comment_text}*)({asterisk}+)")"
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   663
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   664
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   665
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   666
/* 3.1 Whitespace */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   667
/* ============== */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   668
/*
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   669
 * Whitespace is clearly defined (see IEC 61131-3 v2, section 2.1.4)
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   670
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   671
 * Whitespace definition includes the newline character.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   672
 * 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   673
 * However, the standard is inconsistent in that in IL the newline character 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   674
 * is considered a token (EOL - end of line). 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   675
 * In our implementation we therefore have two definitions of whitespace
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   676
 *   - one for ST, that includes the newline character
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   677
 *   - one for IL without the newline character.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   678
 * Additionally, when parsing IL, the newline character is treated as the EOL token.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   679
 * This requires the use of a state machine in the lexical parser that needs at least 
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   680
 * some knowledge of the syntax itself.
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   681
 *
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   682
 * NOTE: Our definition of whitespace will only work in ASCII!
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   683
 *
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   684
 * NOTE: we cannot use
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   685
 *         st_whitespace	[:space:]*
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   686
 *       since we use {st_whitespace} as trailing context. In our case
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   687
 *       this would not constitute "dangerous trailing context", but the
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   688
 *       lexical generator (i.e. flex) does not know this (since it does
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   689
 *       not know which characters belong to the set [:space:]), and will
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   690
 *       generate a "dangerous trailing context" warning!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   691
 *       We use this alternative just to stop the flex utility from
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   692
 *       generating the invalid (in this case) warning...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   693
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   694
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   695
st_whitespace			[ \f\n\r\t\v]*
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   696
il_whitespace			[ \f\r\t\v]*
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   697
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   698
st_whitespace_or_pragma_or_commentX	({st_whitespace})|({pragma})|({comment})
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   699
il_whitespace_or_pragma_or_commentX	({il_whitespace})|({pragma})|({comment})
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   700
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   701
st_whitespace_or_pragma_or_comment	{st_whitespace_or_pragma_or_commentX}*
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   702
il_whitespace_or_pragma_or_comment	{il_whitespace_or_pragma_or_commentX}*
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   703
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   704
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   705
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   706
qualified_identifier	{identifier}(\.{identifier})+
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   707
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   708
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   709
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   710
/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   711
/* B.1.1 Letters, digits and identifiers */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   712
/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   713
/* NOTE: The following definitions only work if the host computer
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   714
 *       is using the ASCII maping. For e.g., with EBCDIC [A-Z]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   715
 *       contains non-alphabetic characters!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   716
 *       The correct way of doing it would be to use
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   717
 *       the [:upper:] etc... definitions.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   718
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   719
 *       Unfortunately, further on we need all printable
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   720
 *       characters (i.e. [:print:]), but excluding '$'.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   721
 *       Flex does not allow sets to be composed by excluding
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   722
 *       elements. Sets may only be constructed by adding new
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   723
 *       elements, which means that we have to revert to
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   724
 *       [\x20\x21\x23\x25\x26\x28-x7E] for the definition
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   725
 *       of the printable characters with the required exceptions.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   726
 *       The above also implies the use of ASCII, but now we have
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   727
 *       no way to work around it|
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   728
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   729
 *       The conclusion is that our parser is limited to ASCII
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   730
 *       based host computers!!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   731
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   732
letter		[A-Za-z]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   733
digit		[0-9]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   734
octal_digit	[0-7]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   735
hex_digit	{digit}|[A-F]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   736
identifier	({letter}|(_({letter}|{digit})))((_?({letter}|{digit}))*)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   737
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   738
/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   739
/* B.1.2 Constants */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   740
/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   741
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   742
/******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   743
/* B.1.2.1   Numeric literals */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   744
/******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   745
integer         {digit}((_?{digit})*)
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   746
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   747
/* Some helper symbols for parsing TIME literals... */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   748
integer_0_59    (0(_?))*([0-5](_?))?{digit}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   749
integer_0_19    (0(_?))*([0-1](_?))?{digit}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   750
integer_20_23   (0(_?))*2(_?)[0-3]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   751
integer_0_23    {integer_0_19}|{integer_20_23}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   752
integer_0_999   {digit}((_?{digit})?)((_?{digit})?)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   753
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   754
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   755
binary_integer  2#{bit}((_?{bit})*)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   756
bit		[0-1]
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   757
octal_integer   8#{octal_digit}((_?{octal_digit})*)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   758
hex_integer     16#{hex_digit}((_?{hex_digit})*)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   759
exponent        [Ee]([+-]?){integer}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   760
/* The correct definition for real would be:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   761
 * real		{integer}\.{integer}({exponent}?)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   762
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   763
 * Unfortunately, the spec also defines fixed_point (B 1.2.3.1) as:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   764
 * fixed_point		{integer}\.{integer}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   765
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   766
 * This means that {integer}\.{integer} could be interpreted
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   767
 * as either a fixed_point or a real.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   768
 * I have opted to interpret {integer}\.{integer} as a fixed_point.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   769
 * In order to do this, the definition of real has been changed to:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   770
 * real		{integer}\.{integer}{exponent}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   771
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   772
 * This means that the syntax parser now needs to define a real to be
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   773
 * either a real_token or a fixed_point_token!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   774
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   775
real		{integer}\.{integer}{exponent}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   776
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   777
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   778
/*******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   779
/* B.1.2.2   Character Strings */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   780
/*******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   781
/*
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   782
common_character_representation :=
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   783
<any printable character except '$', '"' or "'">
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   784
|'$$'
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   785
|'$L'|'$N'|'$P'|'$R'|'$T'
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   786
|'$l'|'$n'|'$p'|'$r'|'$t'
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   787
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   788
NOTE: 	$ = 0x24
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   789
	" = 0x22
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   790
	' = 0x27
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   791
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   792
	printable chars in ASCII: 0x20-0x7E
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   793
*/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   794
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   795
esc_char_u		$L|$N|$P|$R|$T
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   796
esc_char_l		$l|$n|$p|$r|$t
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   797
esc_char		$$|{esc_char_u}|{esc_char_l}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   798
double_byte_char	(${hex_digit}{hex_digit}{hex_digit}{hex_digit})
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   799
single_byte_char	(${hex_digit}{hex_digit})
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   800
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   801
/* WARNING:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   802
 * This definition is only valid in ASCII...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   803
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   804
 * Flex includes the function print_char() that defines
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   805
 * all printable characters portably (i.e. whatever character
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   806
 * encoding is currently being used , ASCII, EBCDIC, etc...)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   807
 * Unfortunately, we cannot generate the definition of
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   808
 * common_character_representation portably, since flex
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   809
 * does not allow definition of sets by subtracting
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   810
 * elements in one set from another set.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   811
 * This means we must build up the defintion of
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   812
 * common_character_representation using only set addition,
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   813
 * which leaves us with the only choice of defining the
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   814
 * characters non-portably...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   815
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   816
common_character_representation		[\x20\x21\x23\x25\x26\x28-\x7E]|{esc_char}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   817
double_byte_character_representation 	$\"|'|{double_byte_char}|{common_character_representation}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   818
single_byte_character_representation 	$'|\"|{single_byte_char}|{common_character_representation}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   819
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   820
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   821
double_byte_character_string	\"({double_byte_character_representation}*)\"
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   822
single_byte_character_string	'({single_byte_character_representation}*)'
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   823
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   824
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   825
/************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   826
/* B 1.2.3.1 - Duration */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   827
/************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   828
fixed_point		{integer}\.{integer}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   829
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   830
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   831
/* NOTE: The IEC 61131-3 v2 standard has an incorrect formal syntax definition of duration,
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   832
 *       as its definition does not match the standard's text.
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   833
 *       IEC 61131-3 v3 (committee draft) seems to have this fixed, so we use that
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   834
 *       definition instead!
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   835
 *
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   836
 *       duration::= ('T' | 'TIME') '#' ['+'|'-'] interval
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   837
 *       interval::= days | hours | minutes | seconds | milliseconds
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   838
 *       fixed_point  ::= integer [ '.' integer]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   839
 *       days         ::= fixed_point 'd' | integer 'd' ['_'] [ hours ]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   840
 *       hours        ::= fixed_point 'h' | integer 'h' ['_'] [ minutes ]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   841
 *       minutes      ::= fixed_point 'm' | integer 'm' ['_'] [ seconds ]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   842
 *       seconds      ::= fixed_point 's' | integer 's' ['_'] [ milliseconds ]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   843
 *       milliseconds ::= fixed_point 'ms'
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   844
 * 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   845
 * 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   846
 *  The original IEC 61131-3 v2 definition is:
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   847
 *       duration ::= ('T' | 'TIME') '#' ['-'] interval
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   848
 *       interval ::= days | hours | minutes | seconds | milliseconds
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   849
 *       fixed_point  ::= integer [ '.' integer]
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   850
 *       days         ::= fixed_point 'd' | integer 'd' ['_'] hours
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   851
 *       hours        ::= fixed_point 'h' | integer 'h' ['_'] minutes
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   852
 *       minutes      ::= fixed_point 'm' | integer 'm' ['_'] seconds
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   853
 *       seconds      ::= fixed_point 's' | integer 's' ['_'] milliseconds
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   854
 *       milliseconds ::= fixed_point 'ms'
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   855
 */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   856
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   857
interval_ms_X		({integer_0_999}(\.{integer})?)ms
686
9b87606d4c07 Fix processing of TIME literals (submited by Andreas)
Mario de Sousa <msousa@fe.up.pt>
parents: 627
diff changeset
   858
interval_s_X		{integer_0_59}s(_?{interval_ms_X})?|({integer_0_59}(\.{integer})?s)
9b87606d4c07 Fix processing of TIME literals (submited by Andreas)
Mario de Sousa <msousa@fe.up.pt>
parents: 627
diff changeset
   859
interval_m_X		{integer_0_59}m(_?{interval_s_X})?|({integer_0_59}(\.{integer})?m)
9b87606d4c07 Fix processing of TIME literals (submited by Andreas)
Mario de Sousa <msousa@fe.up.pt>
parents: 627
diff changeset
   860
interval_h_X		{integer_0_23}h(_?{interval_m_X})?|({integer_0_23}(\.{integer})?h)
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   861
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   862
interval_ms		{integer}ms|({fixed_point}ms)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   863
interval_s		{integer}s(_?{interval_ms_X})?|({fixed_point}s)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   864
interval_m		{integer}m(_?{interval_s_X})?|({fixed_point}m)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   865
interval_h		{integer}h(_?{interval_m_X})?|({fixed_point}h)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   866
interval_d		{integer}d(_?{interval_h_X})?|({fixed_point}d)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   867
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   868
interval		{interval_ms}|{interval_s}|{interval_m}|{interval_h}|{interval_d}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   869
686
9b87606d4c07 Fix processing of TIME literals (submited by Andreas)
Mario de Sousa <msousa@fe.up.pt>
parents: 627
diff changeset
   870
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   871
/* to help provide nice error messages, we also parse an incorrect but plausible interval... */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   872
/* NOTE that this erroneous interval will be parsed outside the time_literal_state, so must not 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   873
 *      be able to parse any other legal lexcial construct (besides a legal interval, but that
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   874
 *      is OK as this rule will appear _after_ the rule to parse legal intervals!).
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   875
 */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   876
fixed_point_or_integer  {fixed_point}|{integer}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   877
erroneous_interval	({fixed_point_or_integer}d_?)?({fixed_point_or_integer}h_?)?({fixed_point_or_integer}m_?)?({fixed_point_or_integer}s_?)?({fixed_point_or_integer}ms)?
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   878
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   879
/********************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   880
/* B.1.4.1   Directly Represented Variables */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   881
/********************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   882
/* The correct definition, if the standard were to be followed... */
11
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   883
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   884
location_prefix			[IQM]
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   885
size_prefix			[XBWDL]
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   886
direct_variable_standard	%{location_prefix}({size_prefix}?){integer}((.{integer})*)
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   887
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   888
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   889
/* For the MatPLC, we will accept %<identifier>
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   890
 * as a direct variable, this being mapped onto the MatPLC point
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   891
 * named <identifier>
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   892
 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   893
/* TODO: we should not restrict it to only the accepted syntax
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   894
 * of <identifier> as specified by the standard. MatPLC point names
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   895
 * have a more permissive syntax.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   896
 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   897
 * e.g. "P__234"
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   898
 *    Is a valid MatPLC point name, but not a valid <identifier> !!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   899
 *    The same happens with names such as "333", "349+23", etc...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   900
 *    How can we handle these more expressive names in our case?
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   901
 *    Remember that some direct variable may remain anonymous, with
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   902
 *    declarations such as:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   903
 *    VAR
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   904
 *       AT %I3 : BYTE := 255;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   905
 *    END_VAR
11
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   906
 *    in which case we are currently using "%I3" as the variable
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   907
 *    name.
8ce37f36d744 Add support for correct syntax of direct variables.
mario
parents: 9
diff changeset
   908
 */
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   909
/* direct_variable_matplc		%{identifier} */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   910
/* direct_variable			{direct_variable_standard}|{direct_variable_matplc} */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
   911
direct_variable			{direct_variable_standard}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   912
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   913
/******************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   914
/* B 1.4.3 - Declaration & Initialisation */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   915
/******************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   916
incompl_location	%[IQM]\*
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   917
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   918
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   919
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   920
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   921
%%
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   922
	/* fprintf(stderr, "flex: state %d\n", YY_START); */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   923
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   924
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   925
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   926
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   927
	/*****                                           *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   928
	/*****                                           *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   929
	/*****   F I R S T    T H I N G S    F I R S T   *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   930
	/*****                                           *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   931
	/*****                                           *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   932
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   933
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   934
	/*****************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   935
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   936
	/***********************************************************/
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   937
	/* Handle requests sent by bison for flex to change state. */
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   938
	/***********************************************************/
13
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
   939
	if (get_goto_body_state()) {
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   940
	  yy_push_state(body_state);
13
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
   941
	  rst_goto_body_state();
6
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
   942
	}
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
   943
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   944
	if (get_goto_sfc_qualifier_state()) {
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   945
	  yy_push_state(sfc_qualifier_state);
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   946
	  rst_goto_sfc_qualifier_state();
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   947
	}
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   948
86
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   949
	if (get_goto_sfc_priority_state()) {
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   950
	  yy_push_state(sfc_priority_state);
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   951
	  rst_goto_sfc_priority_state();
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   952
	}
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
   953
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   954
	if (get_goto_task_init_state()) {
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   955
	  yy_push_state(task_init_state);
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   956
	  rst_goto_task_init_state();
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   957
	}
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
   958
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   959
	if (get_pop_state()) {
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   960
	  yy_pop_state();
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   961
	  rst_pop_state();
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   962
	}
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   963
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   964
	/***************************/
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   965
	/* Handle the pragmas!     */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   966
	/***************************/
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   967
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   968
	/* We start off by searching for the pragmas we handle in the lexical parser. */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   969
<INITIAL>{file_include_pragma}	unput_text(0); yy_push_state(include_beg);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   970
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   971
	/* Pragmas sent to syntax analyser (bison) */
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   972
{disable_code_generation_pragma}               return disable_code_generation_pragma_token;
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   973
{enable_code_generation_pragma}                return enable_code_generation_pragma_token;
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   974
<body_state,vardecl_list_state>{disable_code_generation_pragma}   return disable_code_generation_pragma_token;
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   975
<body_state,vardecl_list_state>{enable_code_generation_pragma}    return enable_code_generation_pragma_token;
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
   976
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   977
	/* Any other pragma we find, we just pass it up to the syntax parser...   */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
   978
	/* Note that the <body_state> state is exclusive, so we have to include it here too. */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   979
{pragma}	{/* return the pragmma without the enclosing '{' and '}' */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
   980
		 int cut = yytext[1]=='{'?2:1;
634
736b36a83548 Added double curly braces for pragma (kept single curly braces for compatibility). Added macro def and undef surrounding pragma to simplify user code. Moved useless comment from generated code back to code generator.
Edouard Tisserant
parents: 627
diff changeset
   981
		 yytext[strlen(yytext)-cut] = '\0';
736b36a83548 Added double curly braces for pragma (kept single curly braces for compatibility). Added macro def and undef surrounding pragma to simplify user code. Moved useless comment from generated code back to code generator.
Edouard Tisserant
parents: 627
diff changeset
   982
		 yylval.ID=strdup(yytext+cut);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   983
		 return pragma_token;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   984
		}
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   985
<body_state,vardecl_list_state>{pragma} {/* return the pragmma without the enclosing '{' and '}' */
701
562c01f82afb Fix pragma with double bracket token stripping
Laurent Bessard
parents: 637
diff changeset
   986
		 int cut = yytext[1]=='{'?2:1;
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
   987
		 yytext[strlen(yytext)-cut] = '\0';
701
562c01f82afb Fix pragma with double bracket token stripping
Laurent Bessard
parents: 637
diff changeset
   988
		 yylval.ID=strdup(yytext+cut);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   989
		 return pragma_token;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   990
		}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   991
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   992
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   993
	/*********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   994
	/* Handle the file includes!     */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   995
	/*********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   996
<include_beg>{file_include_pragma_beg}	BEGIN(include_filename);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   997
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
   998
<include_filename>{file_include_pragma_filename}	{
756
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
   999
			  /* set the internal state variables of lexical analyser to process a new include file */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1000
			  include_file(yytext);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1001
			  /* switch to whatever state was active before the include file */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1002
			  yy_pop_state();
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1003
			  /* now process the new file... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1004
			}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1005
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1006
761
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1007
<<EOF>>			{     /* NOTE: Currently bison is incorrectly using END_OF_INPUT in many rules
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1008
			       *       when checking for syntax errors in the input source code.
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1009
			       *       This means that in reality flex will be asked to carry on reading the input
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1010
			       *       even after it has reached the end of all (including the main) input files.
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1011
			       *       In other owrds, we will be called to return more tokens, even after we have
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1012
			       *       already returned an END_OF_INPUT token. In this case, we must carry on returning
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1013
			       *       more END_OF_INPUT tokens.
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1014
			       * 
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1015
			       *       However, in the above case we will be asked to carry on reading more tokens 
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1016
			       *       from the main input file, after we have reached the end. For this to work
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1017
			       *       correctly, we cannot close the main input file!
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1018
			       * 
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1019
			       *       This is why we WILL be called with include_stack_ptr == 0 multiple times,
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1020
			       *       and why we must handle it as a special case
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1021
			       *       that leaves the include_stack_ptr unchanged, and returns END_OF_INPUT once again.
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1022
			       * 
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1023
			       *       As a corollory, flex can never safely close the main input file, and we must ask
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1024
			       *       bison to close it!
76
ec7799ec929b fixing include bug (only ocured for includes in main program file).
mario
parents: 75
diff changeset
  1025
			       */
ec7799ec929b fixing include bug (only ocured for includes in main program file).
mario
parents: 75
diff changeset
  1026
			  if (include_stack_ptr == 0) {
761
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1027
			      // fclose(yyin);           // Must not do this!!
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1028
			      // FreeTracking(current_tracking); // Must not do this!!
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1029
			      /* yyterminate() terminates the scanner and returns a 0 to the 
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1030
			       * scanner's  caller, indicating "all done".
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1031
			       *	
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1032
			       * Our syntax parser (written with bison) has the token	
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1033
			       * END_OF_INPUT associated to the value 0, so even though
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1034
			       * we don't explicitly return the token END_OF_INPUT
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1035
			       * calling yyterminate() is equivalent to doing that. 
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1036
			       */ 	
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1037
			    yyterminate();
737
f6bc5230aadd Fix comments and code alignment
Mario de Sousa <msousa@fe.up.pt>
parents: 686
diff changeset
  1038
			  } else {
761
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  1039
			    fclose(yyin);
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1040
			    FreeTracking(current_tracking);
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  1041
			    --include_stack_ptr;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1042
			    yy_delete_buffer(YY_CURRENT_BUFFER);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1043
			    yy_switch_to_buffer((include_stack[include_stack_ptr]).buffer_state);
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  1044
			    current_tracking = include_stack[include_stack_ptr].env;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1045
			      /* removing constness of char *. This is safe actually,
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1046
			       * since the only real const char * that is stored on the stack is
1
5d893a68be6e Changes made since Mario visit at LOLITECH. Thanks again !
etisserant
parents: 0
diff changeset
  1047
			       * the first one (i.e. the one that gets stored in include_stack[0],
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1048
			       * which is never free'd!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1049
			       */
286
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1050
			    /* NOTE: We do __NOT__ free the malloc()'d memory since 
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1051
			     *       pointers to this filename will be kept by many objects
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1052
			     *       in the abstract syntax tree.
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1053
			     *       This will later be used to provide correct error
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1054
			     *       messages during semantic analysis (stage 3)
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1055
			     */
a4f4990d5c66 Adding tracking of filename in which token is located.
Mario de Sousa <msousa@fe.up.pt>
parents: 267
diff changeset
  1056
			    /* free((char *)current_filename); */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1057
			    current_filename = include_stack[include_stack_ptr].filename;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1058
			    yy_push_state(include_end);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1059
			  }
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1060
			}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1061
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1062
<include_end>{file_include_pragma_end}	yy_pop_state();
756
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1063
	/* handle the artificial file includes created by include_string(), which do not end with a '}' */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1064
<include_end>.				unput_text(0); yy_pop_state(); 
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1065
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1066
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1067
	/*********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1068
	/* Handle all the state changes! */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1069
	/*********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1070
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1071
	/* INITIAL -> header_state */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1072
<INITIAL>{
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1073
	/* NOTE: how about functions that do not declare variables, and go directly to the body_state???
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1074
	 *      - According to Section 2.5.1.3 (Function Declaration), item 2 in the list, a FUNCTION
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1075
	 *        must have at least one input argument, so a correct declaration will have at least
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1076
	 *        one VAR_INPUT ... VAR_END construct!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1077
	 *      - According to Section 2.5.2.2 (Function Block Declaration), a FUNCTION_BLOCK
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1078
	 *        must have at least one input argument, so a correct declaration will have at least
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1079
	 *        one VAR_INPUT ... VAR_END construct!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1080
	 *      - According to Section 2.5.3 (Programs), a PROGRAM must have at least one input
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1081
	 *        argument, so a correct declaration will have at least one VAR_INPUT ... VAR_END
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1082
	 *        construct!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1083
	 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1084
	 *       All the above means that we needn't worry about PROGRAMs, FUNCTIONs or
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1085
	 *       FUNCTION_BLOCKs that do not have at least one VAR_END before the body_state.
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1086
	 *       If the code has an error, and no VAR_END before the body, we will simply
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1087
	 *       continue in the <vardecl_state> state, untill the end of the FUNCTION, FUNCTION_BLOCK
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1088
	 *       or PROGAM.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1089
	 */
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1090
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1091
FUNCTION{st_whitespace} 		if (get_preparse_state()) BEGIN(get_pou_name_state); else BEGIN(header_state); return FUNCTION;
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1092
FUNCTION_BLOCK{st_whitespace}		if (get_preparse_state()) BEGIN(get_pou_name_state); else BEGIN(header_state); return FUNCTION_BLOCK;
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1093
PROGRAM{st_whitespace}			if (get_preparse_state()) BEGIN(get_pou_name_state); else BEGIN(header_state); return PROGRAM;
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1094
CONFIGURATION{st_whitespace}		if (get_preparse_state()) BEGIN(get_pou_name_state); else BEGIN(config_state); return CONFIGURATION;
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1095
}
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1096
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1097
<get_pou_name_state>{
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1098
{identifier}			BEGIN(ignore_pou_state); yylval.ID=strdup(yytext); return identifier_token;
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1099
.				BEGIN(ignore_pou_state); unput_text(0);
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1100
}
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1101
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1102
<ignore_pou_state>{
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1103
END_FUNCTION			unput_text(0); BEGIN(INITIAL);
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1104
END_FUNCTION_BLOCK		unput_text(0); BEGIN(INITIAL); 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1105
END_PROGRAM			unput_text(0); BEGIN(INITIAL); 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1106
END_CONFIGURATION		unput_text(0); BEGIN(INITIAL); 
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1107
.|\n				{}/* Ignore text inside POU! (including the '\n' character!)) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1108
}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1109
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1110
	/* INITIAL -> body_state */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1111
	/* required if the function, program, etc.. has no VAR block! */
6
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1112
	/* We comment it out since the standard does not allow this.  */
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1113
	/* NOTE: Even if we were to include the following code, it    */
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1114
	/*       would have no effect whatsoever since the above      */
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1115
	/*       rules will take precendence!                         */
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1116
	/*
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1117
<INITIAL>{
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1118
FUNCTION	BEGIN(body_state); return FUNCTION;
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1119
FUNCTION_BLOCK	BEGIN(body_state); return FUNCTION_BLOCK;
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1120
PROGRAM		BEGIN(body_state); return PROGRAM;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1121
}
6
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1122
	*/
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1123
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1124
	/* header_state -> (vardecl_list_state) */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1125
<header_state>{
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1126
VAR				| /* execute the next rule's action, i.e. fall-through! */
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1127
VAR_INPUT			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1128
VAR_OUTPUT			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1129
VAR_IN_OUT			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1130
VAR_EXTERNAL			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1131
VAR_GLOBAL			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1132
VAR_TEMP			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1133
VAR_CONFIG			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1134
VAR_ACCESS			unput_text(0); BEGIN(vardecl_list_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1135
}
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1136
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1137
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1138
	/* vardecl_list_state -> (vardecl_state | body_state | INITIAL) */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1139
<vardecl_list_state>{
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1140
VAR_INPUT			| /* execute the next rule's action, i.e. fall-through! */
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1141
VAR_OUTPUT			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1142
VAR_IN_OUT			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1143
VAR_EXTERNAL			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1144
VAR_GLOBAL			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1145
VAR_TEMP			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1146
VAR_CONFIG			|
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1147
VAR_ACCESS			|
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1148
VAR				unput_text(0); yy_push_state(vardecl_state);
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1149
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1150
END_FUNCTION			unput_text(0); BEGIN(INITIAL); 
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1151
END_FUNCTION_BLOCK		unput_text(0); BEGIN(INITIAL); 
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1152
END_PROGRAM			unput_text(0); BEGIN(INITIAL); 
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1153
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1154
.				unput_text(0); yy_push_state(body_state); /* anything else, just change to body_state! */
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1155
}
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1156
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1157
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1158
	/* vardecl_list_state -> pop to $previous_state (vardecl_list_state) */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1159
<vardecl_state>{
948
543f8319bdf8 Fix main state machine in flex (states were being pushed without being poped from the stack)
mjsousa
parents: 934
diff changeset
  1160
END_VAR				yy_pop_state(); return END_VAR; /* pop back to vardecl_list_state */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1161
}
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1162
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1163
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1164
	/* body_state -> (il_state | st_state | sfc_state) */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1165
<body_state>{
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1166
INITIAL_STEP			unput_text(0); BEGIN(sfc_state); 
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1167
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1168
{qualified_identifier}		unput_text(0); BEGIN(st_state); /* will always be followed by '[' for an array access, or ':=' as the left hand of an assignment statement */
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1169
{direct_variable_standard}	unput_text(0); BEGIN(st_state); /* will always be followed by ':=' as the left hand of an assignment statement */
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1170
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1171
RETURN				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1172
IF				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1173
CASE				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1174
FOR				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1175
WHILE				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1176
EXIT				unput_text(0); BEGIN(st_state);
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1177
REPEAT				unput_text(0); BEGIN(st_state);
151
3b898fb11e73 Bug on language selection in SFC Action fixed
lbessard
parents: 136
diff changeset
  1178
6
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1179
	/* ':=' occurs only in transitions, and not Function or FB bodies! */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1180
:=				unput_text(0); BEGIN(st_state);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1181
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1182
{identifier}	{int token = get_identifier_token(yytext);
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1183
		 if ((token == prev_declared_fb_name_token) || (token == prev_declared_variable_name_token)) {
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1184
		   /* the code has a call to a function block OR has an assingment with a variable as the lvalue */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1185
		   unput_text(0); BEGIN(st_state);
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1186
		 } else
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1187
 		 if (token == prev_declared_derived_function_name_token) {
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1188
		   /* the code has a call to a function - must be IL */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1189
		   unput_text(0); BEGIN(il_state);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1190
		 } else {
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1191
		   /* Might be a lable in IL, or a bug in ST/IL code. We jump to IL */
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1192
		   unput_text(0); BEGIN(il_state);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1193
		 }
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1194
		}
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1195
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1196
.		unput_text(0); BEGIN(il_state); /* Don't know what it could be. This is most likely a bug. Let's just to a random state... */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1197
}	/* end of body_state lexical parser */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1198
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1199
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1200
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1201
	/* (il_state | st_state) -> pop to $previous_state (vardecl_list_state or sfc_state) */
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1202
<il_state,st_state>{
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1203
END_FUNCTION		yy_pop_state(); unput_text(0);
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1204
END_FUNCTION_BLOCK	yy_pop_state(); unput_text(0);
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1205
END_PROGRAM		yy_pop_state(); unput_text(0);
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1206
END_TRANSITION		yy_pop_state(); unput_text(0);
6
94741aa26423 Changing from decl_state directly to sfc_state
mario
parents: 4
diff changeset
  1207
END_ACTION		yy_pop_state(); unput_text(0);
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1208
}
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1209
868
23f271534a7c Fix the state machine that became broken 2 commits ago (when adding support for nested comments)
mjsousa
parents: 867
diff changeset
  1210
	/* sfc_state -> pop to $previous_state (vardecl_list_state or sfc_state) */
4
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1211
<sfc_state>{
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1212
END_FUNCTION		yy_pop_state(); unput_text(0);
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1213
END_FUNCTION_BLOCK	yy_pop_state(); unput_text(0);
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1214
END_PROGRAM		yy_pop_state(); unput_text(0);
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1215
}
0d71456312ab stack overflow problem corrected
lbessard
parents: 3
diff changeset
  1216
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1217
	/* config -> INITIAL */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1218
END_CONFIGURATION	BEGIN(INITIAL); return END_CONFIGURATION;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1219
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1220
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1221
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1222
	/***************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1223
	/* Next is to to remove all whitespace */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1224
	/***************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1225
	/* NOTE: pragmas are handled right at the beginning... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1226
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1227
	/* The whitespace */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1228
<INITIAL,header_state,config_state,body_state,vardecl_list_state,vardecl_state,st_state,sfc_state,task_init_state,sfc_qualifier_state>{st_whitespace}	/* Eat any whitespace */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1229
<il_state>{il_whitespace}		/* Eat any whitespace */
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1230
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1231
	/* The comments */
952
e984cfdf3b10 Add a pre-parsing phase to stage1_2 (allows source code that references POUs and datatypes before they are declared)
mjsousa
parents: 948
diff changeset
  1232
<get_pou_name_state,ignore_pou_state,body_state,vardecl_list_state>{comment_beg}		yy_push_state(comment_state);
867
a435684a5223 Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa
parents: 866
diff changeset
  1233
{comment_beg}						yy_push_state(comment_state);
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1234
<comment_state>{
867
a435684a5223 Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa
parents: 866
diff changeset
  1235
{comment_beg}						{if (get_opt_nested_comments()) yy_push_state(comment_state);}
a435684a5223 Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa
parents: 866
diff changeset
  1236
{comment_end}						yy_pop_state();
a435684a5223 Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa
parents: 866
diff changeset
  1237
.							/* Ignore text inside comment! */
a435684a5223 Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa
parents: 866
diff changeset
  1238
\n							/* Ignore text inside comment! */
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1239
}
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 264
diff changeset
  1240
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1241
	/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1242
	/* B.1.1 Letters, digits and identifiers */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1243
	/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1244
	/* NOTE: 'R1', 'IN', etc... are IL operators, and therefore tokens
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1245
	 *       On the other hand, the spec does not define them as keywords,
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1246
	 *       which means they may be re-used for variable names, etc...!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1247
	 *       The syntax parser already caters for the possibility of these
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1248
	 *       tokens being used for variable names in their declarations.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1249
	 *       When they are declared, they will be added to the variable symbol table!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1250
	 *       Further appearances of these tokens must no longer be parsed
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1251
	 *       as R1_tokens etc..., but rather as variable_name_tokens!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1252
	 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1253
	 *       That is why the first thing we do with identifiers, even before
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1254
	 *       checking whether they may be a 'keyword', is to check whether
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1255
	 *       they have been previously declared as a variable name,
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1256
	 *
13
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1257
	 *       However, we have a dilema! Should we here also check for
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1258
	 *       prev_declared_derived_function_name_token?
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1259
	 *       If we do, then the 'MOD' default library function (defined in
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1260
	 *       the standard) will always be returned as a function name, and
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1261
	 *       it will therefore not be possible to use it as an operator as 
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1262
	 *       in the following ST expression 'X := Y MOD Z;' !
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1263
	 *       If we don't, then even it will not be possible to use 'MOD'
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1264
	 *       as a funtion as in 'X := MOD(Y, Z);'
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1265
	 *       We solve this by NOT testing for function names here, and
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1266
	 *       handling this function and keyword clash in bison!
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1267
	 */
83
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1268
 /*
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1269
{identifier} 	{int token = get_identifier_token(yytext);
81
de518eb7bc74 removing debug messages left by mistake in previous commit.
mario
parents: 80
diff changeset
  1270
		 // fprintf(stderr, "flex: analysing identifier '%s'...", yytext); 
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1271
		 if ((token == prev_declared_variable_name_token) ||
13
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1272
//		     (token == prev_declared_derived_function_name_token) || // DO NOT add this condition!
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1273
		     (token == prev_declared_fb_name_token)) {
83
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1274
		 // if (token != identifier_token)
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1275
		 // * NOTE: if we replace the above uncommented conditions with
13
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1276
                  *       the simple test of (token != identifier_token), then 
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1277
                  *       'MOD' et al must be removed from the 
77174ccc5471 Many major changes to support SFC!
mario
parents: 11
diff changeset
  1278
                  *       library_symbol_table as a default function name!
83
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1279
		  * //
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1280
		   yylval.ID=strdup(yytext);
81
de518eb7bc74 removing debug messages left by mistake in previous commit.
mario
parents: 80
diff changeset
  1281
		   // fprintf(stderr, "returning token %d\n", token); 
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1282
		   return token;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1283
		 }
83
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1284
		 // otherwise, leave it for the other lexical parser rules... 
81
de518eb7bc74 removing debug messages left by mistake in previous commit.
mario
parents: 80
diff changeset
  1285
		 // fprintf(stderr, "rejecting\n"); 
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1286
		 REJECT;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1287
		}
83
aeb7e0e53855 commenting out code no longer required. To be deleted later.
mario
parents: 82
diff changeset
  1288
 */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1289
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1290
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1291
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1292
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1293
	/*****                                            *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1294
	/*****                                            *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1295
	/*****   N O W    D O   T H E   K E Y W O R D S   *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1296
	/*****                                            *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1297
	/*****                                            *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1298
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1299
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1300
	/******************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1301
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1302
934
2a42a68f4b59 Turn support of derefencing operator '^' an option (default is not supported).
mjsousa
parents: 933
diff changeset
  1303
REF	{if (get_opt_ref_standard_extensions()) return REF;        else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
2a42a68f4b59 Turn support of derefencing operator '^' an option (default is not supported).
mjsousa
parents: 933
diff changeset
  1304
DREF	{if (get_opt_ref_standard_extensions()) return DREF;       else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
2a42a68f4b59 Turn support of derefencing operator '^' an option (default is not supported).
mjsousa
parents: 933
diff changeset
  1305
REF_TO	{if (get_opt_ref_standard_extensions()) return REF_TO;     else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
2a42a68f4b59 Turn support of derefencing operator '^' an option (default is not supported).
mjsousa
parents: 933
diff changeset
  1306
NULL	{if (get_opt_ref_standard_extensions()) return NULL_token; else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
873
dea39ef02847 Add limited support for the REF() operator (defined in v3 of IEC 61131-3)
mjsousa
parents: 869
diff changeset
  1307
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1308
EN	return EN;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1309
ENO	return ENO;			/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1310
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1311
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1312
	/******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1313
	/* B 1.2.1 - Numeric Literals */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1314
	/******************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1315
TRUE		return TRUE;		/* Keyword */
257
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1316
BOOL#1  	return boolean_true_literal_token;
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1317
BOOL#TRUE	return boolean_true_literal_token;
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1318
SAFEBOOL#1	{if (get_opt_safe_extensions()) {return safeboolean_true_literal_token;} else{REJECT;}} /* Keyword (Data Type) */ 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1319
SAFEBOOL#TRUE	{if (get_opt_safe_extensions()) {return safeboolean_true_literal_token;} else{REJECT;}} /* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1320
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1321
FALSE		return FALSE;		/* Keyword */
257
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1322
BOOL#0  	return boolean_false_literal_token;
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1323
BOOL#FALSE  	return boolean_false_literal_token;
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1324
SAFEBOOL#0	{if (get_opt_safe_extensions()) {return safeboolean_false_literal_token;} else{REJECT;}} /* Keyword (Data Type) */ 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1325
SAFEBOOL#FALSE	{if (get_opt_safe_extensions()) {return safeboolean_false_literal_token;} else{REJECT;}} /* Keyword (Data Type) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1326
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1327
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1328
	/************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1329
	/* B 1.2.3.1 - Duration */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1330
	/************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1331
t#		return T_SHARP;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1332
T#		return T_SHARP;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1333
TIME		return TIME;		/* Keyword (Data Type) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1334
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1335
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1336
	/************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1337
	/* B 1.2.3.2 - Time of day and Date */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1338
	/************************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1339
TIME_OF_DAY	return TIME_OF_DAY;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1340
TOD		return TIME_OF_DAY;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1341
DATE		return DATE;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1342
d#		return D_SHARP;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1343
D#		return D_SHARP;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1344
DATE_AND_TIME	return DATE_AND_TIME;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1345
DT		return DATE_AND_TIME;	/* Keyword (Data Type) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1346
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1347
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1348
	/***********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1349
	/* B 1.3.1 - Elementary Data Types */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1350
	/***********************************/
257
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1351
BOOL		return BOOL;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1352
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1353
BYTE		return BYTE;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1354
WORD		return WORD;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1355
DWORD		return DWORD;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1356
LWORD		return LWORD;		/* Keyword (Data Type) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1357
257
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1358
SINT		return SINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1359
INT		return INT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1360
DINT		return DINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1361
LINT		return LINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1362
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1363
USINT		return USINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1364
UINT		return UINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1365
UDINT		return UDINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1366
ULINT		return ULINT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1367
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1368
REAL		return REAL;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1369
LREAL		return LREAL;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1370
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1371
WSTRING		return WSTRING;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1372
STRING		return STRING;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1373
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1374
TIME		return TIME;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1375
DATE		return DATE;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1376
DT		return DT;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1377
TOD		return TOD;		/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1378
DATE_AND_TIME	return DATE_AND_TIME;	/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1379
TIME_OF_DAY	return TIME_OF_DAY;	/* Keyword (Data Type) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1380
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1381
	/*****************************************************************/
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1382
	/* Keywords defined in "Safety Software Technical Specification" */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1383
	/*****************************************************************/
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1384
        /* 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1385
         * NOTE: The following keywords are define in 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1386
         *       "Safety Software Technical Specification,
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1387
         *        Part 1: Concepts and Function Blocks,  
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1388
         *        Version 1.0 – Official Release"
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1389
         *        written by PLCopen - Technical Committee 5
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1390
         *
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1391
         *        We only support these extensions and keywords
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1392
         *        if the apropriate command line option is given.
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1393
         */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1394
SAFEBOOL	     {if (get_opt_safe_extensions()) {return SAFEBOOL;}          else {REJECT;}} 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1395
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1396
SAFEBYTE	     {if (get_opt_safe_extensions()) {return SAFEBYTE;}          else {REJECT;}} 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1397
SAFEWORD	     {if (get_opt_safe_extensions()) {return SAFEWORD;}          else {REJECT;}} 
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1398
SAFEDWORD	     {if (get_opt_safe_extensions()) {return SAFEDWORD;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1399
SAFELWORD	     {if (get_opt_safe_extensions()) {return SAFELWORD;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1400
               
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1401
SAFEREAL	     {if (get_opt_safe_extensions()) {return SAFESINT;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1402
SAFELREAL    	     {if (get_opt_safe_extensions()) {return SAFELREAL;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1403
                  
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1404
SAFESINT	     {if (get_opt_safe_extensions()) {return SAFESINT;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1405
SAFEINT	             {if (get_opt_safe_extensions()) {return SAFEINT;}           else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1406
SAFEDINT	     {if (get_opt_safe_extensions()) {return SAFEDINT;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1407
SAFELINT             {if (get_opt_safe_extensions()) {return SAFELINT;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1408
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1409
SAFEUSINT            {if (get_opt_safe_extensions()) {return SAFEUSINT;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1410
SAFEUINT             {if (get_opt_safe_extensions()) {return SAFEUINT;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1411
SAFEUDINT            {if (get_opt_safe_extensions()) {return SAFEUDINT;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1412
SAFEULINT            {if (get_opt_safe_extensions()) {return SAFEULINT;}         else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1413
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1414
 /* SAFESTRING and SAFEWSTRING are not yet supported, i.e. checked correctly, in the semantic analyser (stage 3) */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1415
 /*  so it is best not to support them at all... */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1416
 /*
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1417
SAFEWSTRING          {if (get_opt_safe_extensions()) {return SAFEWSTRING;}       else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1418
SAFESTRING           {if (get_opt_safe_extensions()) {return SAFESTRING;}        else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1419
 */
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1420
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1421
SAFETIME             {if (get_opt_safe_extensions()) {return SAFETIME;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1422
SAFEDATE             {if (get_opt_safe_extensions()) {return SAFEDATE;}          else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1423
SAFEDT               {if (get_opt_safe_extensions()) {return SAFEDT;}            else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1424
SAFETOD              {if (get_opt_safe_extensions()) {return SAFETOD;}           else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1425
SAFEDATE_AND_TIME    {if (get_opt_safe_extensions()) {return SAFEDATE_AND_TIME;} else{REJECT;}}
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1426
SAFETIME_OF_DAY      {if (get_opt_safe_extensions()) {return SAFETIME_OF_DAY;}   else{REJECT;}}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1427
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1428
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1429
	/* B 1.3.2 - Generic data types */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1430
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1431
	/* Strangely, the following symbols do not seem to be required! */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1432
	/* But we include them so they become reserved words, and do not
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1433
	 * get passed up to bison as an identifier...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1434
	 */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1435
ANY		return ANY;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1436
ANY_DERIVED	return ANY_DERIVED;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1437
ANY_ELEMENTARY	return ANY_ELEMENTARY;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1438
ANY_MAGNITUDE	return ANY_MAGNITUDE;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1439
ANY_NUM		return ANY_NUM;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1440
ANY_REAL	return ANY_REAL;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1441
ANY_INT		return ANY_INT;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1442
ANY_BIT		return ANY_BIT;		/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1443
ANY_STRING	return ANY_STRING;	/* Keyword (Data Type) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1444
ANY_DATE	return ANY_DATE;	/* Keyword (Data Type) */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1445
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1446
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1447
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1448
	/* B 1.3.3 - Derived data types */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1449
	/********************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1450
":="		return ASSIGN;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1451
".."		return DOTDOT;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1452
TYPE		return TYPE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1453
END_TYPE	return END_TYPE;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1454
ARRAY		return ARRAY;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1455
OF		return OF;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1456
STRUCT		return STRUCT;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1457
END_STRUCT	return END_STRUCT;	/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1458
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1459
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1460
	/*********************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1461
	/* B 1.4 - Variables */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1462
	/*********************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1463
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1464
	/******************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1465
	/* B 1.4.3 - Declaration & Initialisation */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1466
	/******************************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1467
VAR_INPUT	return VAR_INPUT;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1468
VAR_OUTPUT	return VAR_OUTPUT;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1469
VAR_IN_OUT	return VAR_IN_OUT;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1470
VAR_EXTERNAL	return VAR_EXTERNAL;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1471
VAR_GLOBAL	return VAR_GLOBAL;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1472
END_VAR		return END_VAR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1473
RETAIN		return RETAIN;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1474
NON_RETAIN	return NON_RETAIN;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1475
R_EDGE		return R_EDGE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1476
F_EDGE		return F_EDGE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1477
AT		return AT;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1478
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1479
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1480
	/***********************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1481
	/* B 1.5.1 - Functions */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1482
	/***********************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1483
FUNCTION	return FUNCTION;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1484
END_FUNCTION	return END_FUNCTION;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1485
VAR		return VAR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1486
CONSTANT	return CONSTANT;	/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1487
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1488
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1489
	/*****************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1490
	/* B 1.5.2 - Function Blocks */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1491
	/*****************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1492
FUNCTION_BLOCK		return FUNCTION_BLOCK;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1493
END_FUNCTION_BLOCK	return END_FUNCTION_BLOCK;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1494
VAR_TEMP		return VAR_TEMP;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1495
VAR			return VAR;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1496
NON_RETAIN		return NON_RETAIN;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1497
END_VAR			return END_VAR;			/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1498
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1499
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1500
	/**********************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1501
	/* B 1.5.3 - Programs */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1502
	/**********************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1503
PROGRAM		return PROGRAM;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1504
END_PROGRAM	return END_PROGRAM;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1505
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1506
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1507
	/********************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1508
	/* B 1.6 Sequential Function Chart elements */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1509
	/********************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1510
	/* NOTE: the following identifiers/tokens clash with the R and S IL operators, as well
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1511
	.* as other identifiers that may be used as variable names inside IL and ST programs.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1512
	 * They will have to be handled when we include parsing of SFC... For now, simply
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1513
	 * ignore them!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1514
	 */
1
5d893a68be6e Changes made since Mario visit at LOLITECH. Thanks again !
etisserant
parents: 0
diff changeset
  1515
	 
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1516
ACTION		return ACTION;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1517
END_ACTION	return END_ACTION;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1518
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1519
TRANSITION	return TRANSITION;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1520
END_TRANSITION	return END_TRANSITION;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1521
FROM		return FROM;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1522
TO		return TO;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1523
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1524
INITIAL_STEP	return INITIAL_STEP;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1525
STEP		return STEP;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1526
END_STEP	return END_STEP;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1527
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1528
	/* PRIORITY is not a keyword, so we only return it when 
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1529
	 * it is explicitly required and we are not expecting any identifiers
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1530
	 * that could also use the same letter sequence (i.e. an identifier: piority)
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1531
	 */
86
1988bf1634da Adding support for use of PRIORITY as identifier inside SFC.
mario
parents: 84
diff changeset
  1532
<sfc_priority_state>PRIORITY	return PRIORITY;
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1533
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1534
<sfc_qualifier_state>{
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1535
L		return L;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1536
D		return D;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1537
SD		return SD;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1538
DS		return DS;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1539
SL		return SL;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1540
N		return N;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1541
P		return P;
627
e7caa7d32ef5 Adding support for P0 and P1 qualifiers and fixing code generated for SL qualifier
Laurent Bessard
parents: 616
diff changeset
  1542
P0		return P0;
e7caa7d32ef5 Adding support for P0 and P1 qualifiers and fixing code generated for SL qualifier
Laurent Bessard
parents: 616
diff changeset
  1543
P1		return P1;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1544
R		return R;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1545
S		return S;
1
5d893a68be6e Changes made since Mario visit at LOLITECH. Thanks again !
etisserant
parents: 0
diff changeset
  1546
}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1547
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1548
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1549
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1550
	/* B 1.7 Configuration elements */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1551
	/********************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1552
CONFIGURATION		return CONFIGURATION;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1553
END_CONFIGURATION	return END_CONFIGURATION;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1554
TASK			return TASK;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1555
RESOURCE		return RESOURCE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1556
ON			return ON;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1557
END_RESOURCE		return END_RESOURCE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1558
VAR_CONFIG		return VAR_CONFIG;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1559
VAR_ACCESS		return VAR_ACCESS;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1560
END_VAR			return END_VAR;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1561
WITH			return WITH;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1562
PROGRAM			return PROGRAM;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1563
RETAIN			return RETAIN;			/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1564
NON_RETAIN		return NON_RETAIN;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1565
READ_WRITE		return READ_WRITE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1566
READ_ONLY		return READ_ONLY;		/* Keyword */
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1567
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1568
	/* PRIORITY, SINGLE and INTERVAL are not a keywords, so we only return them when 
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1569
	 * it is explicitly required and we are not expecting any identifiers
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1570
	 * that could also use the same letter sequence (i.e. an identifier: piority, ...)
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1571
	 */
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1572
<task_init_state>{
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1573
PRIORITY		return PRIORITY;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1574
SINGLE			return SINGLE;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1575
INTERVAL		return INTERVAL;
74
85af9521bf63 fixing identifier issues of PRIORITY, SINGLE, and INTERVAL
mario
parents: 73
diff changeset
  1576
}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1577
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1578
	/***********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1579
	/* B 2.1 Instructions and Operands */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1580
	/***********************************/
3
38850ee685e6 ST and IL parsing added into flex-bison analyser
lbessard
parents: 1
diff changeset
  1581
<il_state>\n		return EOL;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1582
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1583
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1584
	/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1585
	/* B 2.2 Operators */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1586
	/*******************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1587
	/* NOTE: we can't have flex return the same token for
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1588
	 *       ANDN and &N, neither for AND and &, since
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1589
	 *       AND and ANDN are considered valid variable
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1590
	 *       function or functionblock type names!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1591
	 *       This means that the parser may decide that the
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1592
	 *       AND or ANDN strings found in the source code
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1593
	 *       are being used as variable names
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1594
	 *       and not as operators, and will therefore transform
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1595
	 *       these tokens into indentifier tokens!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1596
	 *       We can't have the parser thinking that the source
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1597
	 *       code contained the string AND (which may be interpreted
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1598
	 *       as a vairable name) when in reality the source code
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1599
	 *       merely contained the character &, so we use two
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1600
	 *       different tokens for & and AND (and similarly
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1601
	 *       ANDN and &N)!
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1602
	 */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1603
 /* The following tokens clash with ST expression operators and Standard Functions */
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1604
 /* They are also keywords! */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1605
AND		return AND;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1606
MOD		return MOD;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1607
OR		return OR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1608
XOR		return XOR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1609
NOT		return NOT;		/* Keyword */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1610
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1611
 /* The following tokens clash with Standard Functions */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1612
 /* They are keywords because they are a function name */
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1613
<il_state>{
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1614
ADD		return ADD;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1615
DIV		return DIV;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1616
EQ		return EQ;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1617
GE		return GE;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1618
GT		return GT;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1619
LE		return LE;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1620
LT		return LT;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1621
MUL		return MUL;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1622
NE		return NE;		/* Keyword (Standard Function) */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1623
SUB		return SUB;		/* Keyword (Standard Function) */
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1624
}
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1625
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1626
 /* The following tokens clash with SFC action qualifiers */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1627
 /* They are not keywords! */
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1628
<il_state>{
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1629
S		return S;
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1630
R		return R;
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1631
}
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1632
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1633
 /* The following tokens clash with ST expression operators */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1634
&		return AND2;		/* NOT a Delimiter! */
68
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1635
b0a43002dcac Adding basic error checking.
mario
parents: 58
diff changeset
  1636
 /* The following tokens have no clashes */
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1637
 /* They are not keywords! */
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1638
<il_state>{
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1639
LD		return LD;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1640
LDN		return LDN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1641
ST		return ST;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1642
STN		return STN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1643
S1		return S1;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1644
R1		return R1;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1645
CLK		return CLK;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1646
CU		return CU;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1647
CD		return CD;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1648
PV		return PV;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1649
IN		return IN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1650
PT		return PT;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1651
ANDN		return ANDN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1652
&N		return ANDN2;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1653
ORN		return ORN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1654
XORN		return XORN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1655
CAL		return CAL;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1656
CALC		return CALC;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1657
CALCN		return CALCN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1658
RET		return RET;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1659
RETC		return RETC;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1660
RETCN		return RETCN;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1661
JMP		return JMP;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1662
JMPC		return JMPC;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1663
JMPCN		return JMPCN;
73
0e623bbdee95 fixing infinite error loops at library level, and ...
mario
parents: 72
diff changeset
  1664
}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1665
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1666
	/***********************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1667
	/* B 3.1 - Expressions */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1668
	/***********************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1669
"**"		return OPER_EXP;	/* NOT a Delimiter! */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1670
"<>"		return OPER_NE;		/* NOT a Delimiter! */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1671
">="		return OPER_GE;		/* NOT a Delimiter! */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1672
"<="		return OPER_LE;		/* NOT a Delimiter! */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1673
&		return AND2;		/* NOT a Delimiter! */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1674
AND		return AND;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1675
XOR		return XOR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1676
OR		return OR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1677
NOT		return NOT;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1678
MOD		return MOD;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1679
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1680
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1681
	/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1682
	/* B 3.2.2 Subprogram Control Statements */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1683
	/*****************************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1684
:=		return ASSIGN;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1685
=>		return SENDTO;		/* Delimiter */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1686
RETURN		return RETURN;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1687
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1688
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1689
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1690
	/* B 3.2.3 Selection Statements */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1691
	/********************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1692
IF		return IF;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1693
THEN		return THEN;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1694
ELSIF		return ELSIF;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1695
ELSE		return ELSE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1696
END_IF		return END_IF;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1697
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1698
CASE		return CASE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1699
OF		return OF;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1700
ELSE		return ELSE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1701
END_CASE	return END_CASE;	/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1702
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1703
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1704
	/********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1705
	/* B 3.2.4 Iteration Statements */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1706
	/********************************/
82
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1707
FOR		return FOR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1708
TO		return TO;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1709
BY		return BY;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1710
DO		return DO;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1711
END_FOR		return END_FOR;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1712
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1713
WHILE		return WHILE;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1714
DO		return DO;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1715
END_WHILE	return END_WHILE;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1716
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1717
REPEAT		return REPEAT;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1718
UNTIL		return UNTIL;		/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1719
END_REPEAT	return END_REPEAT;	/* Keyword */
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1720
2b6e9eeeff2c Adding some comments.
mario
parents: 81
diff changeset
  1721
EXIT		return EXIT;		/* Keyword */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1722
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1723
257
90782e241346 Huge change.
Mario de Sousa <msousa@fe.up.pt>
parents: 177
diff changeset
  1724
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1725
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1726
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1727
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1728
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1729
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1730
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1731
	/*****                                              *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1732
	/*****                                              *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1733
	/*****  N O W    W O R K    W I T H    V A L U E S  *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1734
	/*****                                              *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1735
	/*****                                              *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1736
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1737
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1738
	/********************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1739
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1740
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1741
	/********************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1742
	/* B.1.4.1   Directly Represented Variables */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1743
	/********************************************/
175
dadda1b5401e Adding support for checking direct variable declared before using
lbessard
parents: 152
diff changeset
  1744
{direct_variable}   {yylval.ID=strdup(yytext); return get_direct_variable_token(yytext);}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1745
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1746
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1747
	/******************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1748
	/* B 1.4.3 - Declaration & Initialisation */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1749
	/******************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1750
{incompl_location}	{yylval.ID=strdup(yytext); return incompl_location_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1751
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1752
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1753
	/************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1754
	/* B 1.2.3.1 - Duration */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1755
	/************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1756
{fixed_point}		{yylval.ID=strdup(yytext); return fixed_point_token;}
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1757
{interval}		{/*fprintf(stderr, "entering time_literal_state ##%s##\n", yytext);*/ unput_and_mark('#'); yy_push_state(time_literal_state);}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1758
{erroneous_interval}	{return erroneous_interval_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1759
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1760
<time_literal_state>{
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1761
{integer}d		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return integer_d_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1762
{integer}h		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return integer_h_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1763
{integer}m		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return integer_m_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1764
{integer}s		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return integer_s_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1765
{integer}ms		{yylval.ID=strdup(yytext); yylval.ID[yyleng-2] = '\0'; return integer_ms_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1766
{fixed_point}d		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return fixed_point_d_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1767
{fixed_point}h		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return fixed_point_h_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1768
{fixed_point}m		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return fixed_point_m_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1769
{fixed_point}s		{yylval.ID=strdup(yytext); yylval.ID[yyleng-1] = '\0'; return fixed_point_s_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1770
{fixed_point}ms		{yylval.ID=strdup(yytext); yylval.ID[yyleng-2] = '\0'; return fixed_point_ms_token;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1771
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1772
_			/* do nothing - eat it up!*/
616
0c7663fdc8d3 Aloow use of SFC STEPs as variables.
Mario de Sousa <msousa@fe.up.pt>
parents: 547
diff changeset
  1773
\#			{/*fprintf(stderr, "popping from time_literal_state (###)\n");*/ yy_pop_state(); return end_interval_token;}
0c7663fdc8d3 Aloow use of SFC STEPs as variables.
Mario de Sousa <msousa@fe.up.pt>
parents: 547
diff changeset
  1774
.			{/*fprintf(stderr, "time_literal_state: found invalid character '%s'. Aborting!\n", yytext);*/ ERROR;}
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1775
\n			{ERROR;}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  1776
}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1777
	/*******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1778
	/* B.1.2.2   Character Strings */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1779
	/*******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1780
{double_byte_character_string} {yylval.ID=strdup(yytext); return double_byte_character_string_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1781
{single_byte_character_string} {yylval.ID=strdup(yytext); return single_byte_character_string_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1782
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1783
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1784
	/******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1785
	/* B.1.2.1   Numeric literals */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1786
	/******************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1787
{integer}		{yylval.ID=strdup(yytext); return integer_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1788
{real}			{yylval.ID=strdup(yytext); return real_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1789
{binary_integer}	{yylval.ID=strdup(yytext); return binary_integer_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1790
{octal_integer} 	{yylval.ID=strdup(yytext); return octal_integer_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1791
{hex_integer} 		{yylval.ID=strdup(yytext); return hex_integer_token;}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1792
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1793
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1794
	/*****************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1795
	/* B.1.1 Letters, digits and identifiers */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1796
	/*****************************************/
866
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1797
<st_state>{identifier}/({st_whitespace_or_pragma_or_comment})"=>"	{yylval.ID=strdup(yytext); return sendto_identifier_token;}
c8c48ab075e0 Add support for nested comments
mjsousa
parents: 793
diff changeset
  1798
<il_state>{identifier}/({il_whitespace_or_pragma_or_comment})"=>"	{yylval.ID=strdup(yytext); return sendto_identifier_token;}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1799
{identifier} 				{yylval.ID=strdup(yytext);
75
0e381bdb8888 Fixing handling of task initialisation.
mario
parents: 74
diff changeset
  1800
					 // printf("returning identifier...: %s, %d\n", yytext, get_identifier_token(yytext));
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1801
					 return get_identifier_token(yytext);}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1802
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1803
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1804
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1805
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1806
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1807
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1808
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1809
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1810
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1811
	/*****                                      *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1812
	/*****                                      *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1813
	/*****   T H E    L E F T O V E R S . . .   *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1814
	/*****                                      *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1815
	/*****                                      *****/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1816
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1817
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1818
	/************************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1819
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1820
	/* do the single character tokens...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1821
	 *
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1822
	 *  e.g.:  ':'  '('  ')'  '+'  '*'  ...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1823
	 */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1824
.	{return yytext[0];}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1825
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1826
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1827
%%
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1828
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1829
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1830
/*************************/
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1831
/* Tracking Functions... */
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1832
/*************************/
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1833
880
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1834
#define MAX_LINE_LENGTH 1024
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1835
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1836
tracking_t *GetNewTracking(FILE* in_file) {
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1837
  tracking_t* new_env = new tracking_t;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1838
  new_env->eof = 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1839
  new_env->lineNumber = 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1840
  new_env->currentChar = 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1841
  new_env->lineLength = 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1842
  new_env->currentTokenStart = 0;
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1843
  new_env->buffer = (char*)malloc(MAX_LINE_LENGTH);
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1844
  new_env->in_file = in_file;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1845
  return new_env;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1846
}
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1847
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1848
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1849
void FreeTracking(tracking_t *tracking) {
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1850
  free(tracking->buffer);
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1851
  delete tracking;
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1852
}
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1853
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1854
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1855
/* GetNextChar: reads a character from input */
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1856
int GetNextChar(char *b, int maxBuffer) {
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1857
  char *p;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1858
  
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1859
  if (  current_tracking->eof  )
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1860
    return 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1861
  
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1862
  while (  current_tracking->currentChar >= current_tracking->lineLength  ) {
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1863
    current_tracking->currentChar = 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1864
    current_tracking->currentTokenStart = 1;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1865
    current_tracking->eof = false;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1866
    
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1867
    p = fgets(current_tracking->buffer, MAX_LINE_LENGTH, current_tracking->in_file);
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1868
    if (  p == NULL  ) {
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1869
      if (  ferror(current_tracking->in_file)  )
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1870
        return 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1871
      current_tracking->eof = true;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1872
      return 0;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1873
    }
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1874
    
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1875
    current_tracking->lineLength = strlen(current_tracking->buffer);
880
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1876
    
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1877
    /* only increment line number if the buffer was big enough to read the whole line! */
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1878
    char last_char = current_tracking->buffer[current_tracking->lineLength - 1];
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1879
    if (('\n' == last_char) || ('\r' == last_char))  // '\r' ---> CR, '\n'  ---> LF
599e88d12f9a Track of line number correctly when input file has code with very long lines.
mjsousa
parents: 879
diff changeset
  1880
      current_tracking->lineNumber++;
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1881
  }
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1882
  
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1883
  b[0] = current_tracking->buffer[current_tracking->currentChar];
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1884
  if (b[0] == ' ' || b[0] == '\t')
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1885
    current_tracking->currentTokenStart++;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1886
  current_tracking->currentChar++;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1887
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1888
  return b[0]==0?0:1;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1889
}
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1890
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1891
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1892
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1893
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1894
/***********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1895
/* Utility function definitions... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1896
/***********************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1897
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1898
/* print the include file stack to stderr... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1899
void print_include_stack(void) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1900
  int i;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1901
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1902
  if ((include_stack_ptr - 1) >= 0)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1903
    fprintf (stderr, "in file "); 
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1904
  for (i = include_stack_ptr - 1; i >= 0; i--)
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  1905
    fprintf (stderr, "included from file %s:%d\n", include_stack[i].filename, include_stack[i].env->lineNumber);
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1906
}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1907
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1908
756
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1909
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1910
/* set the internal state variables of lexical analyser to process a new include file */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1911
void handle_include_file_(FILE *filehandle, const char *filename) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1912
  if (include_stack_ptr >= MAX_INCLUDE_DEPTH) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1913
    fprintf(stderr, "Includes nested too deeply\n");
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1914
    exit( 1 );
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1915
  }
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1916
  
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1917
  yyin = filehandle;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1918
  
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1919
  include_stack[include_stack_ptr].buffer_state = YY_CURRENT_BUFFER;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1920
  include_stack[include_stack_ptr].env = current_tracking;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1921
  include_stack[include_stack_ptr].filename = current_filename;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1922
  
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1923
  current_filename = strdup(filename);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1924
  current_tracking = GetNewTracking(yyin);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1925
  include_stack_ptr++;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1926
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1927
  /* switch input buffer to new file... */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1928
  yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1929
}
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1930
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1931
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1932
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1933
/* insert the code (in <source_code>) into the source code we are parsing.
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1934
 * This is done by creating an artificial file with that new source code, and then 'including' the file
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1935
 */
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  1936
void include_string_(const char *source_code) {
756
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1937
  FILE *tmp_file = tmpfile();
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1938
  
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1939
  if(tmp_file == NULL) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1940
    perror("Error creating temp file.");
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1941
    exit(EXIT_FAILURE);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1942
  }
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1943
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1944
  fwrite((void *)source_code, 1, strlen(source_code), tmp_file);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1945
  rewind(tmp_file);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1946
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1947
  /* now parse the tmp file, by asking flex to handle it as if it had been included with the (*#include ... *) pragma... */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1948
  handle_include_file_(tmp_file, "");
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1949
//fclose(tmp_file);  /* do NOT close file. It must only be closed when we finish reading from it! */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1950
}
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1951
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1952
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1953
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1954
/* Open an include file, and set the internal state variables of lexical analyser to process a new include file */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1955
void include_file(const char *filename) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1956
  FILE *filehandle = NULL;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1957
  
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1958
  for (int i = 0; (INCLUDE_DIRECTORIES[i] != NULL) && (filehandle == NULL); i++) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1959
    char *full_name;
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1960
    full_name = strdup3(INCLUDE_DIRECTORIES[i], "/", filename);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1961
    if (full_name == NULL) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1962
      fprintf(stderr, "Out of memory!\n");
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1963
      exit( 1 );
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1964
    }
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1965
    filehandle = fopen(full_name, "r");
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1966
    free(full_name);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1967
  }
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1968
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1969
  if (NULL == filehandle) {
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1970
    fprintf(stderr, "Error opening included file %s\n", filename);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1971
    exit( 1 );
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1972
  }
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1973
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1974
  /* now process the new file... */
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1975
  handle_include_file_(filehandle, filename);
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1976
}
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1977
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1978
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1979
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1980
634f476cb60f Insert the auto generated enum datatype conversion functions after the TYPE...END_TYPE, instead of at the end of input file.
Mario de Sousa <msousa@fe.up.pt>
parents: 737
diff changeset
  1981
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1982
/* return all the text in the current token back to the input stream, except the first n chars. */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1983
void unput_text(unsigned int n) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1984
  /* it seems that flex has a bug in that it will not correctly count the line numbers
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1985
   * if we return newlines back to the input stream. These newlines will be re-counted
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1986
   * a second time when they are processed again by flex.
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1987
   * We therefore determine how many newlines are in the text we are returning,
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1988
   * and decrement the line counter acordingly...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1989
   */
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1990
  /*
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1991
  unsigned int i;
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  1992
  
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1993
  for (i = n; i < strlen(yytext); i++)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1994
    if (yytext[i] == '\n')
879
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1995
      current_tracking->lineNumber--;
c61b2e370181 Fix memory leak in lexical parser.
mjsousa
parents: 876
diff changeset
  1996
  */
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1997
  /* now return all the text back to the input stream... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1998
  yyless(n);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  1999
}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2000
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2001
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2002
/* return all the text in the current token back to the input stream, 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2003
 * but first return to the stream an additional character to mark the end of the token. 
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2004
 */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2005
void unput_and_mark(const char c) {
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2006
  char *yycopy = strdup( yytext ); /* unput() destroys yytext, so we copy it first */
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2007
  unput(c);
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2008
  for (int i = yyleng-1; i >= 0; i--)
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2009
    unput(yycopy[i]);
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2010
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2011
  free(yycopy);
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2012
}
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2013
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2014
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 415
diff changeset
  2015
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2016
/* Called by flex when it reaches the end-of-file */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2017
int yywrap(void)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2018
{
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2019
  /* We reached the end of the input file... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2020
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2021
  /* Should we continue with another file? */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2022
  /* If so:
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2023
   *   open the new file...
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2024
   *   return 0;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2025
   */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2026
737
f6bc5230aadd Fix comments and code alignment
Mario de Sousa <msousa@fe.up.pt>
parents: 686
diff changeset
  2027
  /* to stop processing...
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2028
   *   return 1;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2029
   */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2030
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2031
  return 1;  /* Stop scanning at end of input file. */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2032
}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2033
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2034
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2035
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2036
/*******************************/
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2037
/* Public Interface for Bison. */
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2038
/*******************************/
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2039
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2040
/* The following functions will be called from inside bison code! */
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2041
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2042
void include_string(const char *source_code) {include_string_(source_code);}
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2043
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2044
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2045
/* Tell flex which file to parse. This function will not imediately start parsing the file.
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2046
 * To parse the file, you then need to call yyparse()
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2047
 *
761
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2048
 * Returns NULL on error opening the file (and a valid errno), or 0 on success.
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2049
 * Caller must close the file!
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2050
 */
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2051
FILE *parse_file(const char *filename) {
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2052
  FILE *filehandle = NULL;
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2053
761
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2054
  if((filehandle = fopen(filename, "r")) != NULL) {
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2055
    yyin = filehandle;
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2056
    current_filename = strdup(filename);
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2057
    current_tracking = GetNewTracking(yyin);
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2058
  }
7b52623a2f37 Allow bison to ask for an END_OF_INPUT token multiple times!
mjsousa
parents: 757
diff changeset
  2059
  return filehandle;
757
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2060
}
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2061
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2062
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2063
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2064
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2065
f1fc4aa6f0e3 Code cleanup: move tracking functions to flex.
Mario de Sousa <msousa@fe.up.pt>
parents: 756
diff changeset
  2066
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2067
/*************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2068
/* Include a main() function to test */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2069
/* the token parsing by flex....     */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2070
/*************************************/
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2071
#ifdef TEST_MAIN
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2072
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2073
#include "../util/symtable.hh"
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2074
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2075
yystype yylval;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2076
YYLTYPE yylloc;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2077
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2078
15
0b472e25eb16 Adding changes to make the compiler compatible with bison ver 2.3
mario
parents: 13
diff changeset
  2079
0b472e25eb16 Adding changes to make the compiler compatible with bison ver 2.3
mario
parents: 13
diff changeset
  2080
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2081
int get_identifier_token(const char *identifier_str) {return 0;}
175
dadda1b5401e Adding support for checking direct variable declared before using
lbessard
parents: 152
diff changeset
  2082
int get_direct_variable_token(const char *direct_variable_str) {return 0;}
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2083
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2084
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2085
int main(int argc, char **argv) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2086
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2087
  FILE *in_file;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2088
  int res;
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  2089
	
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2090
  if (argc == 1) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2091
    /* Work as an interactive (command line) parser... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2092
    while((res=yylex()))
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2093
      fprintf(stderr, "(line %d)token: %d\n", yylineno, res);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2094
  } else {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2095
    /* Work as non-interactive (file) parser... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2096
    if((in_file = fopen(argv[1], "r")) == NULL) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2097
      char *errmsg = strdup2("Error opening main file ", argv[1]);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2098
      perror(errmsg);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2099
      free(errmsg);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2100
      return -1;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2101
    }
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2102
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2103
    /* parse the file... */
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2104
    yyin = in_file;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2105
    current_filename = argv[1];
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2106
    while(1) {
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2107
      res=yylex();
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2108
      fprintf(stderr, "(line %d)token: %d (%s)\n", yylineno, res, yylval.ID);
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2109
    }
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2110
  }
136
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  2111
	
32bd7ef40897 Adding some improvements:
lbessard
parents: 131
diff changeset
  2112
	return 0;
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2113
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2114
}
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset
  2115
#endif