author | Mario de Sousa <msousa@fe.up.pt> |
Thu, 08 Nov 2012 12:49:03 +0000 | |
changeset 719 | 19595fce59f0 |
parent 678 | 01e33dc2a255 |
child 725 | bfbe4aca6b77 |
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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* Copyright (C) 2012 Mario de Sousa (msousa@fe.up.pt) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of 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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/* |
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* Some classes to help with debuging. |
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* |
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* These classes will print out the current state of a symbol or a portion of the Abstract Syntax Tree. |
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*/ |
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|
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/* TODO: Use a class similar to stage4out_c so that we can have nice indentation when printing an AST |
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* Create a template so that we can TRACE the execution of other visitor classes doing usefull work! |
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*/ |
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#include <unistd.h> |
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#include <stdio.h> /* required for NULL */ |
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#include "absyntax_utils.hh" |
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print_symbol_c *print_symbol_c::singleton = NULL; |
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void print_symbol_c::print(symbol_c* symbol) { |
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if (NULL == singleton) singleton = new print_symbol_c(); |
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if (NULL == singleton) ERROR; |
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symbol->accept(*singleton); |
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} |
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void print_symbol_c::fcall(symbol_c* symbol) { |
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dump_symbol(symbol); |
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fprintf(stderr, "\n"); |
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} |
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void print_symbol_c::dump_symbol(symbol_c* symbol) { |
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fprintf(stderr, "(%03d:%03d..%03d:%03d) \t%s\t", symbol->first_line, symbol->first_column, symbol->last_line, symbol->last_column, symbol->absyntax_cname()); |
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fprintf(stderr, " datatype="); |
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if (NULL == symbol->datatype) |
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fprintf(stderr, "NULL\t\t"); |
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else |
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fprintf(stderr, symbol->datatype->absyntax_cname()); |
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fprintf(stderr, "\t<-{"); |
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if (symbol->candidate_datatypes.size() == 0) { |
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fprintf(stderr, "\t\t\t\t\t"); |
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} else if (symbol->candidate_datatypes.size() <= 2) { |
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for (unsigned int i = 0; i < 2; i++) |
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if (i < symbol->candidate_datatypes.size()) |
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fprintf(stderr, " %s,", symbol->candidate_datatypes[i]->absyntax_cname()); |
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else |
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fprintf(stderr, "\t\t\t"); |
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} else { |
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fprintf(stderr, "(%d)\t\t\t\t\t", symbol->candidate_datatypes.size()); |
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} |
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fprintf(stderr, "}\t"); |
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} |
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void *print_symbol_c::visit(il_instruction_c *symbol) { |
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dump_symbol(symbol); |
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fprintf(stderr, " next_il_=%d ", symbol->next_il_instruction.size()); |
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fprintf(stderr, " prev_il_=%d ", symbol->prev_il_instruction.size()); |
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if (symbol->prev_il_instruction.size() == 0) |
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114 |
fprintf(stderr, "(----,"); |
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115 |
else if (symbol->prev_il_instruction[0]->datatype == NULL) |
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116 |
fprintf(stderr, "(NULL,"); |
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117 |
else if (!get_datatype_info_c::is_type_valid(symbol->prev_il_instruction[0]->datatype)) |
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118 |
fprintf(stderr, "(****,"); |
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119 |
else |
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120 |
fprintf(stderr, "( ,"); |
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121 |
|
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122 |
if (symbol->next_il_instruction.size() == 0) |
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123 |
fprintf(stderr, "----)"); |
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124 |
else if (symbol->next_il_instruction[0]->datatype == NULL) |
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125 |
fprintf(stderr, "NULL)"); |
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126 |
else if (!get_datatype_info_c::is_type_valid(symbol->next_il_instruction[0]->datatype)) |
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127 |
fprintf(stderr, "****)"); |
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128 |
else |
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129 |
fprintf(stderr, " )"); |
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130 |
|
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131 |
fprintf(stderr, "\n"); |
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132 |
|
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133 |
return NULL; |
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134 |
}; |
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135 |
|
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136 |
|
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137 |
|
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138 |
|
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139 |
|
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140 |
|
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141 |
|
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142 |
|
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143 |
|
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144 |
|
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145 |
|
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146 |
|
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147 |
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148 |
print_ast_c *print_ast_c::singleton = NULL; |
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149 |
|
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150 |
|
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151 |
void print_ast_c::print(symbol_c* symbol) { |
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152 |
if (NULL == singleton) singleton = new print_ast_c(); |
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153 |
if (NULL == singleton) ERROR; |
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154 |
|
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155 |
symbol->accept(*singleton); |
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156 |
} |
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157 |
|
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158 |
|
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159 |
void print_ast_c::prefix_fcall(symbol_c* symbol) {print_symbol_c::print(symbol);} |
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160 |
void print_ast_c::suffix_fcall(symbol_c* symbol) {} |
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161 |
|
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162 |
|
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163 |
|
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|
164 |
|
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|
165 |
|
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|
166 |
|
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|
167 |
|
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|
168 |
|
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|
169 |
|
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|
170 |
|
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|
171 |
|
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|
172 |
|
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|
173 |
|
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|
174 |
|
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|
175 |
|
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|
176 |