absyntax_utils/search_var_instance_decl.cc
author mjsousa
Thu, 08 May 2014 12:21:48 +0100
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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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 *  Copyright (C) 2007-2011  Laurent Bessard and Edouard Tisserant
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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 the License, 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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/* Search in a VAR* END_VAR declaration for the delcration of the specified variable instance. 
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 * Will return:
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 *     - the declaration itself (get_decl() )
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 *     - the type of declaration in which the variable was declared (get_vartype() )
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 *
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 * The variable instance may NOT be a member of a structure of a memeber
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 * of a structure of an element of an array of ...
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 *
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 * For example, considering the following 'variables':
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 *    window.points[1].coordinate.x
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 *    window.points[1].colour
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 *    offset[99]
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 *
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 *   passing a reference to 'points', 'points[1]', 'points[1].colour', 'colour'
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 *    ARE NOT ALLOWED!
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 *
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 * This class must only be passed the name of the variable that will appear
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 * in the variable declaration. In the above examples, this would be
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 *   'window.points[1].coordinate.x'
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 *   'window.points[1].coordinate'
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 *   'window.points[1]'
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 *   'window'
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 *   'window.points[1].colour'
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 *   'offset'
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 *   'offset[99]'
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 *
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 *
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 */
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/* Note: 
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 * Determining the declaration type of a specific variable instance (including
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 * function block instances) really means determining whether the variable was declared in a
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 *  VAR_INPUT
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 *  VAR_OUTPUT
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 *  VAR_IN_OUT
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 *  VAR
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 *  VAR_TEMP
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 *  VAR_EXTERNAL
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 *  VAR_GLOBAL
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 *  VAR <var_name> AT <location>   -> Located variable!
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 * 
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 */
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/* Note:
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 *  The current_type_decl that this class returns may reference the
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 * name of a type, or the type declaration itself!
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 * For an example of the first, consider a variable declared as ...
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 * x : AAA;
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 * where the AAA type is previously declared as whatever.
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 * For an example of the second, consider a variable declared as ...
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 * x : array of int [10];  ---->  is allowed
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 *
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 * If it is the first, we will return a reference to the name, if the second
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 * we return a reference to the declaration!!
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 */
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#include "absyntax_utils.hh"
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search_var_instance_decl_c::search_var_instance_decl_c(symbol_c *search_scope) {
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  this->current_vartype = none_vt;
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  this->search_scope = search_scope;
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  this->search_name = NULL;
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  this->current_type_decl = NULL;
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  this->current_option = none_opt;
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}
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symbol_c *search_var_instance_decl_c::get_decl(symbol_c *variable) {
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
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  if (NULL == search_scope) return NULL; // NOTE: This is not an ERROR! declaration_check_c, for e.g., relies on this returning NULL!
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  return (symbol_c *)search_scope->accept(*this);
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}
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search_var_instance_decl_c::vt_t search_var_instance_decl_c::get_vartype(symbol_c *variable) {
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
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  if (NULL == search_scope) ERROR;
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  search_scope->accept(*this);
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  return this->current_vartype;
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}
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search_var_instance_decl_c::opt_t search_var_instance_decl_c::get_option(symbol_c *variable) {
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
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6679b6b21214 Partial fix to VAR_EXTERN vs VAR_GLOBAL check. Now considers globals declared in resources too. TODO: recursively check FB declared in the program.
Mario de Sousa <msousa@fe.up.pt>
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  if (NULL == search_scope) ERROR;
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  search_scope->accept(*this);
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  return this->current_option;
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}
417
d48f53715f77 Re-write of stage3 code (done by Manuele and I), re-write of search_varfb_instance_type_c (done by myself), and several other bug fixes.
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   129
531
e7d6f28fc882 Make temporary fix to is_complex() method.
Mario de Sousa <msousa@fe.up.pt>
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e7d6f28fc882 Make temporary fix to is_complex() method.
Mario de Sousa <msousa@fe.up.pt>
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e7d6f28fc882 Make temporary fix to is_complex() method.
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   132
181
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/***************************/
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/* B 0 - Programming Model */
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/***************************/
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void *search_var_instance_decl_c::visit(library_c *symbol) {
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  /* we do not want to search multiple declaration scopes,
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   * so we do not visit all the functions, function blocks, etc...
181
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   */
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  return NULL;
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}
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/******************************************/
217
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/* B 1.4.3 - Declaration & Initialization */
181
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/******************************************/
217
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181
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/* edge -> The F_EDGE or R_EDGE directive */
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// SYM_REF2(edge_declaration_c, edge, var1_list)
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// TODO
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void *search_var_instance_decl_c::visit(constant_option_c *symbol) {
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  current_option = constant_opt;
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  return NULL;
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}
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void *search_var_instance_decl_c::visit(retain_option_c *symbol) {
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  current_option = retain_opt;
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  return NULL;
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}
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void *search_var_instance_decl_c::visit(non_retain_option_c *symbol) {
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  current_option = non_retain_opt;
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  return NULL;
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}
181
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void *search_var_instance_decl_c::visit(input_declarations_c *symbol) {
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  current_vartype = input_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)  
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    symbol->option->accept(*this);
181
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  void *res = symbol->input_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/* VAR_OUTPUT [RETAIN | NON_RETAIN] var_init_decl_list END_VAR */
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/* option -> may be NULL ! */
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void *search_var_instance_decl_c::visit(output_declarations_c *symbol) {
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  current_vartype = output_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/*  VAR_IN_OUT var_declaration_list END_VAR */
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void *search_var_instance_decl_c::visit(input_output_declarations_c *symbol) {
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  current_vartype = inoutput_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
181
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  void *res = symbol->var_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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  }
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  return res;
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}
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202
da1a8186f86f Initial (very rough) version of semantic checker (stage3)
Catarina Boucinha <ccb@fe.up.pt>
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   206
/* ENO : BOOL */
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void *search_var_instance_decl_c::visit(eno_param_declaration_c *symbol) {
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  if (compare_identifiers(symbol->name, search_name) == 0)
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    return symbol->type;
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  return NULL;
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   211
}
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da1a8186f86f Initial (very rough) version of semantic checker (stage3)
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   213
181
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/* VAR [CONSTANT] var_init_decl_list END_VAR */
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/* option -> may be NULL ! */
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/* helper symbol for input_declarations */
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void *search_var_instance_decl_c::visit(var_declarations_c *symbol) {
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  current_vartype = private_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*  VAR RETAIN var_init_decl_list END_VAR */
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void *search_var_instance_decl_c::visit(retentive_var_declarations_c *symbol) {
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  current_vartype = private_vt;
507
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  current_option  = retain_opt;
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*  VAR [CONSTANT|RETAIN|NON_RETAIN] located_var_decl_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(located_var_declarations_c, option, located_var_decl_list)
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void *search_var_instance_decl_c::visit(located_var_declarations_c *symbol) {
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  current_vartype = located_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->located_var_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/*| VAR_EXTERNAL [CONSTANT] external_declaration_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(external_var_declarations_c, option, external_declaration_list)
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void *search_var_instance_decl_c::visit(external_var_declarations_c *symbol) {
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  current_vartype = external_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->external_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*| VAR_GLOBAL [CONSTANT|RETAIN] global_var_decl_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(global_var_declarations_c, option, global_var_decl_list)
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void *search_var_instance_decl_c::visit(global_var_declarations_c *symbol) {
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  current_vartype = global_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->global_var_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/* var1_list is one of the following...
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 *    simple_spec_init_c *
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 *    subrange_spec_init_c *
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 *    enumerated_spec_init_c *
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 */
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// SYM_REF2(var1_init_decl_c, var1_list, spec_init)
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void *search_var_instance_decl_c::visit(var1_init_decl_c *symbol) {
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  current_type_decl = symbol->spec_init;
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  return symbol->var1_list->accept(*this);
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}
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   300
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/* var1_list ',' variable_name */
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// SYM_LIST(var1_list_c)
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void *search_var_instance_decl_c::visit(var1_list_c *symbol) {
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  list_c *list = symbol;
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  for(int i = 0; i < list->n; i++) {
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    if (compare_identifiers(list->elements[i], search_name) == 0)
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   /* by now, current_type_decl should be != NULL */
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      return current_type_decl;
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  }
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  return NULL;
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   311
}
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   312
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/* name_list ':' function_block_type_name ASSIGN structure_initialization */
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/* structure_initialization -> may be NULL ! */
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void *search_var_instance_decl_c::visit(fb_name_decl_c *symbol) {
810
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  // TODO: The following line is wrong! It should be
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  // current_type_decl = symbol->fb_spec_init;
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  //  However, this change will require a check of all callers, to see if they would handle this correctly.
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  //  For now, just keep what we have had historically, and seems to be working.
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  current_type_decl = spec_init_sperator_c::get_spec(symbol->fb_spec_init);
181
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  return symbol->fb_name_list->accept(*this);
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}
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   323
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   324
/* name_list ',' fb_name */
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void *search_var_instance_decl_c::visit(fb_name_list_c *symbol) {
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   326
  list_c *list = symbol;
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   327
  for(int i = 0; i < list->n; i++) {
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   328
    if (compare_identifiers(list->elements[i], search_name) == 0)
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   329
    /* by now, current_fb_declaration should be != NULL */
181
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      return current_type_decl;
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   331
  }
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   332
  return NULL;
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   333
}
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   334
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   335
/* var1_list ':' array_spec_init */
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   336
// SYM_REF2(array_var_init_decl_c, var1_list, array_spec_init)
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   337
void *search_var_instance_decl_c::visit(array_var_init_decl_c *symbol) {
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   338
  current_type_decl = symbol->array_spec_init;
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   339
  return symbol->var1_list->accept(*this);
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   340
}
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   341
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   342
/*  var1_list ':' initialized_structure */
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   343
// SYM_REF2(structured_var_init_decl_c, var1_list, initialized_structure)
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   344
void *search_var_instance_decl_c::visit(structured_var_init_decl_c *symbol) {
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  current_type_decl = symbol->initialized_structure;
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   346
  return symbol->var1_list->accept(*this);
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   347
}
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   348
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   349
/*  var1_list ':' array_specification */
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   350
// SYM_REF2(array_var_declaration_c, var1_list, array_specification)
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   351
void *search_var_instance_decl_c::visit(array_var_declaration_c *symbol) {
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   352
  current_type_decl = symbol->array_specification;
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   353
  return symbol->var1_list->accept(*this);
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   354
}
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   355
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   356
/*  var1_list ':' structure_type_name */
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   357
// SYM_REF2(structured_var_declaration_c, var1_list, structure_type_name)
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   358
void *search_var_instance_decl_c::visit(structured_var_declaration_c *symbol) {
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   359
  current_type_decl = symbol->structure_type_name;
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   360
  return symbol->var1_list->accept(*this);
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   361
}
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   362
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   363
/*  [variable_name] location ':' located_var_spec_init */
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   364
/* variable_name -> may be NULL ! */
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   365
// SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused)
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   366
// TODO!!
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   367
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   368
/*  global_var_name ':' (simple_specification|subrange_specification|enumerated_specification|array_specification|prev_declared_structure_type_name|function_block_type_name */
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   369
// SYM_REF2(external_declaration_c, global_var_name, specification)
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   370
void *search_var_instance_decl_c::visit(external_declaration_c *symbol) {
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   371
  if (compare_identifiers(symbol->global_var_name, search_name) == 0)
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   372
      return symbol->specification;
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   373
  return NULL;
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   374
}
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   375
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   376
/*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */
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   377
/* type_specification ->may be NULL ! */
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   378
// SYM_REF2(global_var_decl_c, global_var_spec, type_specification)
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   379
void *search_var_instance_decl_c::visit(global_var_decl_c *symbol) {
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   380
  if (symbol->type_specification != NULL) {
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   381
    current_type_decl = symbol->type_specification;
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   382
    return symbol->global_var_spec->accept(*this);
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   383
  }
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   384
  else
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   385
    return NULL;
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   386
}
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   387
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   388
/*| global_var_name location */
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   389
//SYM_REF2(global_var_spec_c, global_var_name, location)
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   390
void *search_var_instance_decl_c::visit(global_var_spec_c *symbol) {
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   391
  if (symbol->global_var_name != NULL && compare_identifiers(symbol->global_var_name, search_name) == 0)
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   392
      return current_type_decl;
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   393
  else
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   394
    return symbol->location->accept(*this);
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   395
}
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   396
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   397
/*| global_var_list ',' global_var_name */
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   398
//SYM_LIST(global_var_list_c)
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   399
void *search_var_instance_decl_c::visit(global_var_list_c *symbol) {
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   400
  list_c *list = symbol;
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   401
  for(int i = 0; i < list->n; i++) {
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   402
    if (compare_identifiers(list->elements[i], search_name) == 0)
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   403
      /* by now, current_type_decl should be != NULL */
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   404
      return current_type_decl;
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   405
  }
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   406
  return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   407
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   408
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   409
/*  [variable_name] location ':' located_var_spec_init */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   410
/* variable_name -> may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   411
//SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   412
void *search_var_instance_decl_c::visit(located_var_decl_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   413
  if (symbol->variable_name != NULL && compare_identifiers(symbol->variable_name, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   414
    return symbol->located_var_spec_init;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   415
  else {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   416
    current_type_decl = symbol->located_var_spec_init;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   417
    return symbol->location->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   418
  }
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   419
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   420
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   421
/*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   422
/* type_specification ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   423
// SYM_REF2(global_var_decl_c, global_var_spec, type_specification)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   424
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   425
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   426
/*  AT direct_variable */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   427
// SYM_REF2(location_c, direct_variable, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   428
void *search_var_instance_decl_c::visit(location_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   429
  if (compare_identifiers(symbol->direct_variable, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   430
    return current_type_decl;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   431
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   432
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   433
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   434
        
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   435
/*| global_var_list ',' global_var_name */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   436
// SYM_LIST(global_var_list_c)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   437
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   438
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   439
/*  var1_list ':' single_byte_string_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   440
// SYM_REF2(single_byte_string_var_declaration_c, var1_list, single_byte_string_spec)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   441
void *search_var_instance_decl_c::visit(single_byte_string_var_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   442
  current_type_decl = symbol->single_byte_string_spec;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   443
  return symbol->var1_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   444
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   445
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   446
/*  STRING ['[' integer ']'] [ASSIGN single_byte_character_string] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   447
/* integer ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   448
/* single_byte_character_string ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   449
// SYM_REF2(single_byte_string_spec_c, integer, single_byte_character_string)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   450
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   451
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   452
/*  var1_list ':' double_byte_string_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   453
// SYM_REF2(double_byte_string_var_declaration_c, var1_list, double_byte_string_spec)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   454
void *search_var_instance_decl_c::visit(double_byte_string_var_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   455
  current_type_decl = symbol->double_byte_string_spec;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   456
  return symbol->var1_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   457
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   458
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   459
/*  WSTRING ['[' integer ']'] [ASSIGN double_byte_character_string] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   460
/* integer ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   461
/* double_byte_character_string ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   462
// SYM_REF2(double_byte_string_spec_c, integer, double_byte_character_string)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   463
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   464
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   465
/*  variable_name incompl_location ':' var_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   466
// SYM_REF4(incompl_located_var_decl_c, variable_name, incompl_location, var_spec, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   467
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   468
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   469
/*  AT incompl_location_token */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   470
// SYM_TOKEN(incompl_location_c)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   471
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   472
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   473
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   474
/**************************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   475
/* B.1.5 - Program organization units */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   476
/**************************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   477
/***********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   478
/* B 1.5.1 - Functions */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   479
/***********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   480
// SYM_REF4(function_declaration_c, derived_function_name, type_name, var_declarations_list, function_body)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   481
void *search_var_instance_decl_c::visit(function_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   482
  /* functions have a variable named after themselves, to store
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   483
   * the variable that will be returned!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   484
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   485
  if (compare_identifiers(symbol->derived_function_name, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   486
      return symbol->type_name;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   487
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   488
  /* no need to search through all the body, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   489
   * visit the variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   490
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   491
  return symbol->var_declarations_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   492
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   493
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   494
/*****************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   495
/* B 1.5.2 - Function Blocks */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   496
/*****************************/
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   497
/*  FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   498
// SYM_REF3(function_block_declaration_c, fblock_name, var_declarations, fblock_body)
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   499
void *search_var_instance_decl_c::visit(function_block_declaration_c *symbol) {
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   500
  /* visit the variable declarations...! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   501
  void *res = symbol->var_declarations->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   502
  if (NULL != res)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   503
    return res;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   504
  
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   505
  /* not yet found, so we look into the body, to see if it is an SFC step! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   506
  return symbol->fblock_body->accept(*this);
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   507
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   508
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   509
/**********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   510
/* B 1.5.3 - Programs */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   511
/**********************/
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   512
/*  PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   513
// SYM_REF3(program_declaration_c, program_type_name, var_declarations, function_block_body)
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   514
void *search_var_instance_decl_c::visit(program_declaration_c *symbol) {
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   515
  /* visit the variable declarations...! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   516
  void *res = symbol->var_declarations->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   517
  if (NULL != res)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   518
    return res;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   519
  
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   520
  /* not yet found, so we look into the body, to see if it is an SFC step! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   521
  return symbol->function_block_body->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   522
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   523
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   524
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   525
/*********************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   526
/* B.1.6  Sequential function chart elements */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   527
/*********************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   528
/* | sequential_function_chart sfc_network */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   529
// SYM_LIST(sequential_function_chart_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   530
/* search_var_instance_decl_c inherits from serach_visitor_c, so no need to implement the following method. */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   531
// void *search_var_instance_decl_c::visit(sequential_function_chart_c *symbol) {...}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   532
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   533
/* initial_step {step | transition | action} */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   534
// SYM_LIST(sfc_network_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   535
/* search_var_instance_decl_c inherits from serach_visitor_c, so no need to implement the following method. */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   536
// void *search_var_instance_decl_c::visit(sfc_network_c *symbol) {...}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   537
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   538
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   539
/* INITIAL_STEP step_name ':' action_association_list END_STEP */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   540
// SYM_REF2(initial_step_c, step_name, action_association_list)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   541
void *search_var_instance_decl_c::visit(initial_step_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   542
  if (compare_identifiers(symbol->step_name, search_name) == 0)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   543
      return symbol;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   544
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   545
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   546
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   547
/* STEP step_name ':' action_association_list END_STEP */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   548
// SYM_REF2(step_c, step_name, action_association_list)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   549
void *search_var_instance_decl_c::visit(step_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   550
  if (compare_identifiers(symbol->step_name, search_name) == 0)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   551
      return symbol;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   552
  return NULL;
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   553
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   554
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   555
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   556
/********************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   557
/* B 1.7 Configuration elements */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   558
/********************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   559
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   560
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   561
CONFIGURATION configuration_name
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   562
   optional_global_var_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   563
   (resource_declaration_list | single_resource_declaration)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   564
   optional_access_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   565
   optional_instance_specific_initializations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   566
END_CONFIGURATION
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   567
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   568
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   569
SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   570
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   571
void *search_var_instance_decl_c::visit(configuration_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   572
  /* no need to search through all the configuration, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   573
   * visit the global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   574
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   575
  if (symbol->global_var_declarations != NULL)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   576
    return symbol->global_var_declarations->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   577
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   578
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   579
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   580
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   581
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   582
RESOURCE resource_name ON resource_type_name
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   583
   optional_global_var_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   584
   single_resource_declaration
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   585
END_RESOURCE
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   586
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   587
// SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   588
void *search_var_instance_decl_c::visit(resource_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   589
  /* no need to search through all the resource, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   590
   * visit the global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   591
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   592
  if (symbol->global_var_declarations != NULL)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   593
    return symbol->global_var_declarations->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   594
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   595
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   596
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   597
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   598
/* task_configuration_list program_configuration_list */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   599
// SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   600
void *search_var_instance_decl_c::visit(single_resource_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   601
  /* no need to search through all the resource,
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   602
   * and there is no global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   603
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   604
  return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   605
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   606
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   607
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   608
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   609
/****************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   610
/* B.2 - Language IL (Instruction List) */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   611
/****************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   612
/***********************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   613
/* B 2.1 Instructions and Operands */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   614
/***********************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   615
/*| instruction_list il_instruction */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   616
// SYM_LIST(instruction_list_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   617
void *search_var_instance_decl_c::visit(instruction_list_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   618
  /* IL code does not contain any variable declarations! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   619
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   620
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   621
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   622
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   623
/***************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   624
/* B.3 - Language ST (Structured Text) */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   625
/***************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   626
/********************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   627
/* B 3.2 Statements */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   628
/********************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   629
// SYM_LIST(statement_list_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   630
void *search_var_instance_decl_c::visit(statement_list_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   631
  /* ST code does not contain any variable declarations! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   632
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   633
}