author | Mario de Sousa <msousa@fe.up.pt> |
Wed, 06 Jun 2012 16:39:54 +0100 | |
changeset 568 | 5f79478142d7 |
parent 567 | e5deeb6d4d2f |
child 569 | 0d1ab9e78574 |
permissions | -rw-r--r-- |
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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) 2012 Manuele Conti (conti.ma@alice.it) |
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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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/* |
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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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/* Determine the value of an ST expression. |
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* Filling in all symbols the correct value. |
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* |
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* For example: |
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* 2 + 3 -> returns constant_value_integer = 5 |
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* 22.2 - 5.0 -> returns constant_value_real = 17.2 |
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* etc... |
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*/ |
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|
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#include "constant_folding.hh" |
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#include <typeinfo> |
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#include <limits> |
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#include <math.h> /* required for pow function */ |
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#include <stdlib.h> /* required for malloc() */ |
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#define FIRST_(symbol1, symbol2) (((symbol1)->first_order < (symbol2)->first_order) ? (symbol1) : (symbol2)) |
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#define LAST_(symbol1, symbol2) (((symbol1)->last_order > (symbol2)->last_order) ? (symbol1) : (symbol2)) |
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#define STAGE3_ERROR(error_level, symbol1, symbol2, ...) { \ |
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if (current_display_error_level >= error_level) { \ |
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fprintf(stderr, "%s:%d-%d..%d-%d: error: ", \ |
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FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column,\ |
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LAST_(symbol1,symbol2) ->last_line, LAST_(symbol1,symbol2) ->last_column);\ |
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fprintf(stderr, __VA_ARGS__); \ |
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fprintf(stderr, "\n"); \ |
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error_count++; \ |
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} \ |
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} |
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#define STAGE3_WARNING(symbol1, symbol2, ...) { \ |
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fprintf(stderr, "%s:%d-%d..%d-%d: warning: ", \ |
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FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column,\ |
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LAST_(symbol1,symbol2) ->last_line, LAST_(symbol1,symbol2) ->last_column);\ |
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fprintf(stderr, __VA_ARGS__); \ |
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fprintf(stderr, "\n"); \ |
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warning_found = true; \ |
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} |
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#define MALLOC(variable, data_type) \ |
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variable = (data_type *)malloc(sizeof(data_type)); \ |
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if (variable == NULL) ERROR; |
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#define DO_OPER(dtype)\ |
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(NULL != symbol->r_exp->const_value_##dtype ) && \ |
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(NULL != symbol->l_exp->const_value_##dtype ) |
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#define CHECK_OVERFLOW_SUM(a, b, type)\ |
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((((std::numeric_limits< type >::max() - a) < (b)) ? 1 : 0) || \ |
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(((std::numeric_limits< type >::min() + a) > (b)) ? 1 : 0)) |
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#define CHECK_OVERFLOW_SUB(a, b, type)\ |
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((((std::numeric_limits< type >::max() - a) < (-b)) ? 1 : 0) || \ |
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(((std::numeric_limits< type >::min() + a) > (-b)) ? 1 : 0)) |
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#define SYMBOL_BOOL_VALUE (symbol->exp->const_value_bool) |
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#define SYMBOL_REAL_VALUE (symbol->exp->const_value_real) |
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constant_folding_c::constant_folding_c(symbol_c *symbol) { |
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error_count = 0; |
568
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warning_found = false; |
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current_display_error_level = 0; |
568
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|
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/* check whether the platform on which the compiler is being run implements IEC 559 floating point data types. */ |
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symbol_c null_symbol; |
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if (! (std::numeric_limits<real64_t>::is_iec559) ) |
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STAGE3_WARNING(&null_symbol, &null_symbol, "The platform running the compiler does not implement IEC 559 floating point numbers. " |
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"Any error and/or warning messages related to overflow/underflow of the result of operations on REAL/LREAL literals " |
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" (i.e. constant folding) may themselves be erroneous, although are most probably correct"); |
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} |
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115 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
116 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
117 |
constant_folding_c::~constant_folding_c(void) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
118 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
119 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
120 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
121 |
int constant_folding_c::get_error_count() { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
122 |
return error_count; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
123 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
124 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
125 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
126 |
/*********************/ |
dabffc3086dc
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Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
127 |
/* B 1.2 - Constants */ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
128 |
/*********************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
129 |
/******************************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
130 |
/* B 1.2.1 - Numeric Literals */ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
131 |
/******************************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
132 |
void *constant_folding_c::visit(real_c *symbol) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
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diff
changeset
|
133 |
MALLOC(symbol->const_value_real, real64_t); |
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
134 |
*symbol->const_value_real = extract_real_value(symbol); |
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
135 |
|
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
136 |
return NULL; |
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
137 |
} |
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
138 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
139 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
140 |
void *constant_folding_c::visit(integer_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
141 |
int64_t *integer_value; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
142 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
143 |
integer_value = (int64_t *)malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
144 |
*integer_value = extract_integer_value(symbol); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
145 |
symbol->const_value_integer = integer_value; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
146 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
147 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
148 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
149 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
150 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
151 |
void *constant_folding_c::visit(neg_real_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
152 |
symbol->exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
153 |
if (NULL == symbol->exp->const_value_real) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
154 |
ERROR; |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
155 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
156 |
*symbol->const_value_real = - *(symbol->exp->const_value_real); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
157 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
158 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
159 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
160 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
161 |
void *constant_folding_c::visit(neg_integer_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
162 |
int64_t *integer_value; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
163 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
164 |
integer_value = (int64_t *)malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
165 |
*integer_value = extract_integer_value(symbol); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
166 |
symbol->const_value_integer = integer_value; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
167 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
168 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
169 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
170 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
171 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
172 |
void *constant_folding_c::visit(binary_integer_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
173 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
174 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
175 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
176 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
177 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
178 |
void *constant_folding_c::visit(octal_integer_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
179 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
180 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
181 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
182 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
183 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
184 |
void *constant_folding_c::visit(hex_integer_c *symbol) { |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
185 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
186 |
*(symbol->const_value_integer) = extract_hex_value(symbol); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
187 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
188 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
189 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
190 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
191 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
192 |
void *constant_folding_c::visit(integer_literal_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
193 |
symbol->value->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
194 |
if (NULL == symbol->value->const_value_integer) ERROR; |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
195 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
196 |
*(symbol->const_value_integer) = *(symbol->value->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
197 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
198 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
199 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
200 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
201 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
202 |
void *constant_folding_c::visit(real_literal_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
203 |
symbol->value->accept(*this); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
204 |
if (NULL == symbol->value->const_value_real) ERROR; |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
205 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
206 |
*symbol->const_value_real = *(symbol->value->const_value_real); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
207 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
208 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
209 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
210 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
211 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
212 |
void *constant_folding_c::visit(bit_string_literal_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
213 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
214 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
215 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
216 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
217 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
218 |
void *constant_folding_c::visit(boolean_literal_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
219 |
symbol->value->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
220 |
if (NULL == symbol->value->const_value_bool) ERROR; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
221 |
symbol->const_value_bool = (bool *)malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
222 |
*(symbol->const_value_bool) = *(symbol->value->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
223 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
224 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
225 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
226 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
227 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
228 |
void *constant_folding_c::visit(boolean_true_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
229 |
symbol->const_value_bool = (bool *)malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
230 |
*(symbol->const_value_bool) = true; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
231 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
232 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
233 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
234 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
235 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
236 |
void *constant_folding_c::visit(boolean_false_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
237 |
symbol->const_value_bool = (bool *)malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
238 |
*(symbol->const_value_bool) = false; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
239 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
240 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
241 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
242 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
243 |
|
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
244 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
245 |
/***************************************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
246 |
/* B.3 - Language ST (Structured Text) */ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
247 |
/***************************************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
248 |
/***********************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
249 |
/* B 3.1 - Expressions */ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
250 |
/***********************/ |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
251 |
void *constant_folding_c::visit(or_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
252 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
253 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
254 |
if (DO_OPER(bool)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
255 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
256 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_bool) || *(symbol->r_exp->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
257 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
258 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
259 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
260 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) | *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
261 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
262 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
263 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
264 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
265 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
266 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
267 |
void *constant_folding_c::visit(xor_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
268 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
269 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
270 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
271 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
272 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) ^ *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
273 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
274 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
275 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
276 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
277 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
278 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
279 |
void *constant_folding_c::visit(and_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
280 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
281 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
282 |
if (DO_OPER(bool)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
283 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
284 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_bool) && *(symbol->r_exp->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
285 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
286 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
287 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
288 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) & *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
289 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
290 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
291 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
292 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
293 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
294 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
295 |
void *constant_folding_c::visit(equ_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
296 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
297 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
298 |
if (DO_OPER(bool)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
299 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
300 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_bool) == *(symbol->r_exp->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
301 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
302 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
303 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
304 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) == *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
305 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
306 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
307 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
308 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) == *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
309 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
310 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
311 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
312 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
313 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
314 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
315 |
void *constant_folding_c::visit(notequ_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
316 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
317 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
318 |
if (DO_OPER(bool)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
319 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
320 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_bool) != *(symbol->r_exp->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
321 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
322 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
323 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
324 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) != *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
325 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
326 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
327 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
328 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) != *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
329 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
330 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
331 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
332 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
333 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
334 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
335 |
void *constant_folding_c::visit(lt_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
336 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
337 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
338 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
339 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
340 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) < *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
341 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
342 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
343 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
344 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) < *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
345 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
346 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
347 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
348 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
349 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
350 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
351 |
void *constant_folding_c::visit(gt_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
352 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
353 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
354 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
355 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
356 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) > *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
357 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
358 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
359 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
360 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) > *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
361 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
362 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
363 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
364 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
365 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
366 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
367 |
void *constant_folding_c::visit(le_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
368 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
369 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
370 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
371 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
372 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) <= *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
373 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
374 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
375 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
376 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) <= *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
377 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
378 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
379 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
380 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
381 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
382 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
383 |
void *constant_folding_c::visit(ge_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
384 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
385 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
386 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
387 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
388 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_integer) >= *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
389 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
390 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
391 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
392 |
*(symbol->const_value_bool) = *(symbol->l_exp->const_value_real) >= *(symbol->r_exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
393 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
394 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
395 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
396 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
397 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
398 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
399 |
void *constant_folding_c::visit(add_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
400 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
401 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
402 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
403 |
if (CHECK_OVERFLOW_SUM(*(symbol->l_exp->const_value_integer), *(symbol->r_exp->const_value_integer), int64_t)) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
404 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
405 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
406 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) + *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
407 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
408 |
if (DO_OPER(real)) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
409 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
410 |
*(symbol->const_value_real) = *(symbol->l_exp->const_value_real) + *(symbol->r_exp->const_value_real); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
411 |
/* |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
412 |
* According to the IEEE standard, NaN value is used as: |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
413 |
* - representation of a number that has underflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
414 |
* - representation of number that has overflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
415 |
* - number is a higher precision format |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
416 |
* - A complex number |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
417 |
*/ |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
418 |
if (isnan(*(symbol->const_value_real))) |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
419 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
420 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
421 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
422 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
423 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
424 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
425 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
426 |
void *constant_folding_c::visit(sub_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
427 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
428 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
429 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
430 |
if (CHECK_OVERFLOW_SUB(*(symbol->l_exp->const_value_integer), *(symbol->r_exp->const_value_integer), int64_t)) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
431 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
432 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
433 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) - *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
434 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
435 |
if (DO_OPER(real)) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
436 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
437 |
*(symbol->const_value_real) = *(symbol->l_exp->const_value_real) - *(symbol->r_exp->const_value_real); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
438 |
/* |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
439 |
* According to the IEEE standard, NaN value is used as: |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
440 |
* - representation of a number that has underflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
441 |
* - representation of number that has overflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
442 |
* - number is a higher precision format |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
443 |
* - A complex number |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
444 |
*/ |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
445 |
if (isnan(*(symbol->const_value_real))) |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
446 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
447 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
448 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
449 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
450 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
451 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
452 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
453 |
void *constant_folding_c::visit(mul_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
454 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
455 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
456 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
457 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
458 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) * *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
459 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
460 |
if (DO_OPER(real)) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
461 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
462 |
*(symbol->const_value_real) = *(symbol->l_exp->const_value_real) * *(symbol->r_exp->const_value_real); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
463 |
/* |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
464 |
* According to the IEEE standard, NaN value is used as: |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
465 |
* - representation of a number that has underflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
466 |
* - representation of number that has overflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
467 |
* - number is a higher precision format |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
468 |
* - A complex number |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
469 |
*/ |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
470 |
if (isnan(*(symbol->const_value_real))) |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
471 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
472 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
473 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
474 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
475 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
476 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
477 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
478 |
void *constant_folding_c::visit(div_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
479 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
480 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
481 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
482 |
if (*(symbol->r_exp->const_value_integer) == 0) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
483 |
STAGE3_ERROR(0, symbol, symbol, "Division by zero in constant expression."); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
484 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
485 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) / *(symbol->r_exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
486 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
487 |
if (DO_OPER(real)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
488 |
if (*(symbol->r_exp->const_value_real) == 0) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
489 |
STAGE3_ERROR(0, symbol, symbol, "Division by zero in constant expression."); |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
490 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
491 |
*(symbol->const_value_real) = *(symbol->l_exp->const_value_real) / *(symbol->r_exp->const_value_real); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
492 |
/* |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
493 |
* According to the IEEE standard, NaN value is used as: |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
494 |
* - representation of a number that has underflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
495 |
* - representation of number that has overflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
496 |
* - number is a higher precision format |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
497 |
* - A complex number |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
498 |
*/ |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
499 |
if (isnan(*(symbol->const_value_real))) |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
500 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
501 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
502 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
503 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
504 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
505 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
506 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
507 |
void *constant_folding_c::visit(mod_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
508 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
509 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
510 |
if (DO_OPER(integer)) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
511 |
if (*(symbol->r_exp->const_value_integer) == 0) |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
512 |
STAGE3_ERROR(0, symbol, symbol, "Division by zero in constant expression."); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
513 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
514 |
*(symbol->const_value_integer) = *(symbol->l_exp->const_value_integer) % *(symbol->r_exp->const_value_integer); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
515 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
516 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
517 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
518 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
519 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
520 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
521 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
522 |
void *constant_folding_c::visit(power_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
523 |
symbol->l_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
524 |
symbol->r_exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
525 |
if ((NULL != symbol->l_exp->const_value_real) && (NULL != symbol->r_exp->const_value_integer)) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
526 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
527 |
*(symbol->const_value_real) = pow(*(symbol->l_exp->const_value_real), *(symbol->r_exp->const_value_integer)); |
566
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
528 |
/* |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
529 |
* According to the IEEE standard, NaN value is used as: |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
530 |
* - representation of a number that has underflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
531 |
* - representation of number that has overflowed |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
532 |
* - number is a higher precision format |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
533 |
* - A complex number |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
534 |
*/ |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
535 |
if (isnan(*(symbol->const_value_real))) |
5688fa07f89a
Update constant folding: fixing minor bug.
Manuele Conti <conti.ma@alice.it>
parents:
565
diff
changeset
|
536 |
STAGE3_ERROR(0, symbol, symbol, "Overflow in constant expression."); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
537 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
538 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
539 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
540 |
} |
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
541 |
|
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
542 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
543 |
void *constant_folding_c::visit(neg_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
544 |
symbol->exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
545 |
if (NULL != symbol->exp->const_value_integer) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
546 |
symbol->const_value_integer = (int64_t*) malloc(sizeof(int64_t)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
547 |
*(symbol->const_value_integer) = - *(symbol->exp->const_value_integer); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
548 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
549 |
if (NULL != symbol->exp->const_value_real) { |
568
5f79478142d7
make the compiler platform independent (i.e. no longer assume sizeof(double)==8).
Mario de Sousa <msousa@fe.up.pt>
parents:
567
diff
changeset
|
550 |
symbol->const_value_real = (real64_t*) malloc(sizeof(real64_t)); |
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
551 |
*(symbol->const_value_real) = - *(symbol->exp->const_value_real); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
552 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
553 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
554 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
555 |
|
567
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
556 |
|
e5deeb6d4d2f
create extract_real_value() in absyntax_utils. NOTE: overflows not yet handled!
Mario de Sousa <msousa@fe.up.pt>
parents:
566
diff
changeset
|
557 |
|
564
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
558 |
void *constant_folding_c::visit(not_expression_c *symbol) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
559 |
symbol->exp->accept(*this); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
560 |
if (NULL != symbol->exp->const_value_bool) { |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
561 |
symbol->const_value_bool = (bool*) malloc(sizeof(bool)); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
562 |
*(symbol->const_value_bool) = !*(symbol->exp->const_value_bool); |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
563 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
564 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
565 |
return NULL; |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
566 |
} |
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
567 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
568 |
|
dabffc3086dc
Start constant_folding class.
Manuele Conti <conti.ma@alice.it>
parents:
diff
changeset
|
569 |