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1 /* |
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2 * (c) 2009 Mario de Sousa |
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3 * |
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4 * Offered to the public under the terms of the GNU General Public License |
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5 * as published by the Free Software Foundation; either version 2 of the |
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6 * License, or (at your option) any later version. |
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7 * |
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8 * This program is distributed in the hope that it will be useful, but |
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9 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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11 * Public License for more details. |
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12 * |
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13 * This code is made available on the understanding that it will not be |
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14 * used in safety-critical situations without a full and competent review. |
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15 */ |
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16 |
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17 /* |
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18 * An IEC 61131-3 IL and ST compiler. |
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19 * |
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20 * Based on the |
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21 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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22 * |
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23 */ |
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24 |
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25 |
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26 /* |
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27 * This is the main stage 3a file. |
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28 * |
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29 * In stage 3a some helpful symbol tables are instanciated and populated. |
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30 * These symbol tables wll then be used by stage3b and atage4 code generators. |
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31 */ |
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32 |
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33 |
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34 |
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35 |
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36 |
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37 |
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38 // #include <stdio.h> /* required for NULL */ |
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39 #include <string> |
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40 #include <iostream> |
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41 #include <sstream> |
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42 #include <typeinfo> |
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43 #include <list> |
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44 #include <strings.h> |
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45 |
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46 #include "../util/symtable.hh" |
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47 #include "../util/dsymtable.hh" |
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48 #include "../absyntax/visitor.hh" |
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49 |
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50 |
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51 |
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52 //#define DEBUG |
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53 #ifdef DEBUG |
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54 #define TRACE(classname) printf("\n____%s____\n",classname); |
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55 #else |
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56 #define TRACE(classname) |
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57 #endif |
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58 |
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59 #define ERROR error_exit(__FILE__,__LINE__) |
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60 /* function defined in main.cc */ |
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61 extern void error_exit(const char *file_name, int line_no); |
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62 |
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63 |
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64 |
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65 |
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66 |
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67 /* A symbol table with all globally declared functions... */ |
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68 function_declaration_c null_symbol1(NULL,NULL,NULL,NULL); |
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69 dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable; |
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70 |
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71 /* A symbol table with all globally declared functions block types... */ |
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72 function_block_declaration_c null_symbol2(NULL,NULL,NULL); |
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73 symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable; |
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74 |
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75 /* A symbol table with all globally declared program types... */ |
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76 program_declaration_c null_symbol3(NULL,NULL,NULL); |
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77 symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable; |
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78 |
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79 /* A symbol table with all user declared type definitions... */ |
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80 /* Note that function block types and program types have their |
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81 * own symbol tables, so do not get placed in this symbol table! |
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82 */ |
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83 symbol_c null_symbol4; |
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84 symtable_c<symbol_c *, &null_symbol4> type_symtable; |
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85 |
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86 |
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87 |
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88 /***********************************************************************/ |
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89 /***********************************************************************/ |
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90 /***********************************************************************/ |
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91 /***********************************************************************/ |
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92 |
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93 /* |
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94 #include "spec_init_separator.cc" |
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95 #include "function_param_iterator.cc" |
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96 #include "function_call_iterator.cc" |
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97 #include "function_call_param_iterator.cc" |
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98 #include "type_initial_value.cc" |
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99 #include "search_fb_instance_decl.cc" |
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100 #include "search_fb_typedecl.cc" |
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101 #include "search_base_type.cc" |
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102 #include "search_var_instance_decl.cc" |
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103 #include "decompose_var_instance_name.cc" |
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104 #include "search_varfb_instance_type.cc" |
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105 #include "search_constant_type.cc" |
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106 #include "search_expression_type.cc" |
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107 |
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108 #include "generate_c_base.cc" |
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109 #include "generate_c_typedecl.cc" |
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110 #include "generate_c_sfcdecl.cc" |
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111 #include "generate_c_vardecl.cc" |
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112 #include "generate_c_configbody.cc" |
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113 #include "generate_location_list.cc" |
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114 #include "generate_var_list.cc" |
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115 */ |
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116 |
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117 /***********************************************************************/ |
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118 /***********************************************************************/ |
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119 /***********************************************************************/ |
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120 /***********************************************************************/ |
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121 /***********************************************************************/ |
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122 |
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123 |
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124 class populate_symtables_c: public iterator_visitor_c { |
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125 |
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126 public: |
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127 populate_symtables_c(void) {}; |
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128 virtual ~populate_symtables_c(void) {} |
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129 |
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130 |
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131 public: |
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132 |
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133 /*************************/ |
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134 /* B.1 - Common elements */ |
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135 /*************************/ |
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136 /*******************************************/ |
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137 /* B 1.1 - Letters, digits and identifiers */ |
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138 /*******************************************/ |
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139 /*********************/ |
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140 /* B 1.2 - Constants */ |
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141 /*********************/ |
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142 /******************************/ |
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143 /* B 1.2.1 - Numeric Literals */ |
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144 /******************************/ |
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145 /*******************************/ |
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146 /* B.1.2.2 Character Strings */ |
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147 /*******************************/ |
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148 /***************************/ |
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149 /* B 1.2.3 - Time Literals */ |
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150 /***************************/ |
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151 /************************/ |
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152 /* B 1.2.3.1 - Duration */ |
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153 /************************/ |
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154 /************************************/ |
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155 /* B 1.2.3.2 - Time of day and Date */ |
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156 /************************************/ |
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157 /**********************/ |
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158 /* B.1.3 - Data types */ |
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159 /**********************/ |
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160 /***********************************/ |
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161 /* B 1.3.1 - Elementary Data Types */ |
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162 /***********************************/ |
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163 /********************************/ |
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164 /* B.1.3.2 - Generic data types */ |
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165 /********************************/ |
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166 /********************************/ |
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167 /* B 1.3.3 - Derived data types */ |
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168 /********************************/ |
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169 |
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170 /* subrange_type_name ':' subrange_spec_init */ |
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171 void *visit(subrange_type_declaration_c *symbol) { |
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172 TRACE("subrange_type_declaration_c"); |
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173 type_symtable.insert(symbol->subrange_type_name, symbol->subrange_spec_init); |
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174 return NULL; |
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175 } |
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176 |
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177 |
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178 /* enumerated_type_name ':' enumerated_spec_init */ |
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179 void *visit(enumerated_type_declaration_c *symbol) { |
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180 TRACE("enumerated_type_declaration_c"); |
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181 type_symtable.insert(symbol->enumerated_type_name, symbol->enumerated_spec_init); |
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182 return NULL; |
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183 } |
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184 |
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185 |
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186 /* identifier ':' array_spec_init */ |
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187 void *visit(array_type_declaration_c *symbol) { |
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188 TRACE("array_type_declaration_c"); |
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189 type_symtable.insert(symbol->identifier, symbol->array_spec_init); |
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190 return NULL; |
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191 } |
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192 |
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193 |
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194 /* simple_type_name ':' simple_spec_init */ |
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195 void *visit(simple_type_declaration_c *symbol) { |
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196 TRACE("simple_type_declaration_c"); |
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197 type_symtable.insert(symbol->simple_type_name, symbol->simple_spec_init); |
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198 return NULL; |
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199 } |
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200 |
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201 |
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202 /* structure_type_name ':' structure_specification */ |
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203 void *visit(structure_type_declaration_c *symbol) { |
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204 TRACE("structure_type_declaration_c"); |
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205 type_symtable.insert(symbol->structure_type_name, symbol->structure_specification); |
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206 return NULL; |
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207 } |
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208 |
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209 |
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210 |
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211 /*********************/ |
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212 /* B 1.4 - Variables */ |
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213 /*********************/ |
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214 /********************************************/ |
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215 /* B.1.4.1 Directly Represented Variables */ |
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216 /********************************************/ |
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217 /*************************************/ |
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218 /* B.1.4.2 Multi-element Variables */ |
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219 /*************************************/ |
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220 /******************************************/ |
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221 /* B 1.4.3 - Declaration & Initialisation */ |
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222 /******************************************/ |
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223 /**************************************/ |
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224 /* B.1.5 - Program organization units */ |
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225 /**************************************/ |
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226 /***********************/ |
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227 /* B 1.5.1 - Functions */ |
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228 /***********************/ |
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229 public: |
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230 /* FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ |
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231 /* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ |
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232 void *visit(function_declaration_c *symbol) { |
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233 TRACE("function_declaration_c"); |
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234 function_symtable.insert(symbol->derived_function_name, symbol); |
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235 |
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236 /* symbol->derived_function_name->accept(*this); */ /* Function name */ |
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237 /* symbol->type_name->accept(*this); */ /* return data type */ |
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238 /* symbol->var_declarations_list->accept(*this); */ /* Function parameters and variables */ |
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239 /* symbol->function_body->accept(*this); */ /* Function body */ |
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240 return NULL; |
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241 } |
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242 |
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243 |
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244 /*****************************/ |
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245 /* B 1.5.2 - Function Blocks */ |
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246 /*****************************/ |
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247 public: |
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248 /* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */ |
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249 //SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused) |
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250 void *visit(function_block_declaration_c *symbol) { |
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251 TRACE("function_block_declaration_c"); |
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252 function_block_type_symtable.insert(symbol->fblock_name, symbol); |
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253 /* |
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254 symbol->fblock_name->accept(*this); |
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255 symbol->var_declarations->accept(*this); |
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256 symbol->fblock_body->accept(*this); |
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257 */ |
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258 return NULL; |
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259 } |
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260 |
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261 |
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262 /**********************/ |
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263 /* B 1.5.3 - Programs */ |
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264 /**********************/ |
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265 public: |
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266 /* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */ |
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267 //SYM_REF4(program_declaration_c, program_type_name, var_declarations, function_block_body, unused) |
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268 void *visit(program_declaration_c *symbol) { |
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269 TRACE("program_declaration_c"); |
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270 program_type_symtable.insert(symbol->program_type_name, symbol); |
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271 /* |
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272 symbol->program_type_name->accept(*this); |
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273 symbol->var_declarations->accept(*this); |
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274 symbol->function_block_body->accept(*this); |
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275 */ |
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276 return NULL; |
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277 } |
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278 |
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279 }; /* populate_symtables_c */ |
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280 |
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281 |
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282 |
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283 |
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284 |
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285 void search_utils_init(symbol_c *tree_root) { |
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286 populate_symtables_c populate_symbols; |
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287 |
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288 tree_root->accept(populate_symbols); |
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289 } |