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1 /* |
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2 * (c) 2003 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 one of the versions available for the 4th stage. |
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28 * |
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29 * This 4th stage generates a c++ source program equivalent |
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30 * to the IL and ST code. |
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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 |
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44 #include "../../util/symtable.hh" |
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45 #include "../../util/dsymtable.hh" |
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46 #include "../../absyntax/visitor.hh" |
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47 |
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48 #include "../stage4.hh" |
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49 |
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50 |
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51 |
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52 |
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53 |
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54 |
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55 |
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56 |
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57 //#define DEBUG |
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58 #ifdef DEBUG |
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59 #define TRACE(classname) printf("\n____%s____\n",classname); |
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60 #else |
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61 #define TRACE(classname) |
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62 #endif |
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63 |
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64 |
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65 |
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66 #define ERROR error_exit(__FILE__,__LINE__) |
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67 /* function defined in main.cc */ |
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68 extern void error_exit(const char *file_name, int line_no); |
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69 |
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70 |
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71 |
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72 |
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73 |
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74 |
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75 |
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76 /* A symbol table with all globally declared functions... */ |
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77 function_declaration_c null_symbol1(NULL,NULL,NULL,NULL); |
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78 dsymtable_c<function_declaration_c *, &null_symbol1> function_symtable; |
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79 |
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80 /* A symbol table with all globally declared functions block types... */ |
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81 function_block_declaration_c null_symbol2(NULL,NULL,NULL); |
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82 symtable_c<function_block_declaration_c *, &null_symbol2> function_block_type_symtable; |
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83 |
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84 /* A symbol table with all globally declared program types... */ |
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85 program_declaration_c null_symbol3(NULL,NULL,NULL); |
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86 symtable_c<program_declaration_c *, &null_symbol3> program_type_symtable; |
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87 |
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88 /* A symbol table with all user declared type definitions... */ |
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89 /* Note that function block types and program types have their |
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90 * own symbol tables, so do not get placed in this symbol table! |
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91 */ |
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92 symbol_c null_symbol4; |
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93 symtable_c<symbol_c *, &null_symbol4> type_symtable; |
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94 |
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95 |
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96 |
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97 /***********************************************************************/ |
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98 /***********************************************************************/ |
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99 /***********************************************************************/ |
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100 /***********************************************************************/ |
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101 |
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102 |
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103 /* returns 0 if the names are equal!! */ |
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104 /* NOTE: it must ignore case!! */ |
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105 static int compare_identifiers(symbol_c *ident1, symbol_c *ident2) { |
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106 |
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107 token_c *name1 = dynamic_cast<token_c *>(ident1); |
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108 token_c *name2 = dynamic_cast<token_c *>(ident2); |
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109 |
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110 if ((name1 == NULL) || (name2 == NULL)) |
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111 /* invalid identifiers... */ |
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112 return -1; |
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113 |
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114 if (strcasecmp(name1->value, name2->value) == 0) |
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115 return 0; |
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116 |
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117 /* identifiers do not match! */ |
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118 return 1; |
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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 /***********************************************************************/ |
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125 /***********************************************************************/ |
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126 |
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127 /* Unlike Programs and Configurations which get mapped onto C++ classes, |
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128 * Function Blocks are mapped onto a C structure containing the variables, and |
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129 * a C function containing the code in the FB's body. This is to allow direct allocation |
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130 * of a FB variable (which is really an instance of the C data structure) to |
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131 * a member of a union variable (note that classes with constructors cannot |
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132 * be mebers of a union), which is done in IL when loading a FB onto IL's |
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133 * default variable. |
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134 * |
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135 * So as not to clash the names of the C data structure and the C function, |
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136 * the C structure is given a name identical to that of the FB name, whereas |
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137 * the name of the function is the FB name with a constant string appended. |
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138 * The value of that constant string which is appended is defined in the following |
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139 * constant. |
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140 * In order not to clash with any variable in the IL and ST source codem the |
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141 * following constant should contain a double underscore, which is not allowed |
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142 * in IL and ST. |
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143 * |
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144 * e.g.: FUNTION_BLOCK TEST |
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145 * is mapped onto a TEST data structure, and a TEST_body__ function. |
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146 */ |
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147 |
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148 #define FB_FUNCTION_SUFFIX "_body__" |
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149 |
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150 /* Idem as body, but for initializer FB function */ |
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151 #define FB_INIT_SUFFIX "_init__" |
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152 |
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153 /* Idem as body, but for run CONFIG and RESOURCE function */ |
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154 #define FB_RUN_SUFFIX "_run__" |
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155 |
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156 /* The FB body function is passed as the only parameter a pointer to the FB data |
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157 * structure instance. The name of this parameter is given by the following constant. |
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158 * In order not to clash with any variable in the IL and ST source codem the |
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159 * following constant should contain a double underscore, which is not allowed |
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160 * in IL and ST. |
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161 * |
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162 * e.g.: the body of FUNTION_BLOCK TEST |
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163 * is mapped onto the C function |
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164 * TEST_body__(TEST *data__) |
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165 */ |
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166 |
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167 #define FB_FUNCTION_PARAM "data__" |
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168 |
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169 |
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170 #define SFC_STEP_ACTION_PREFIX "__SFC_" |
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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 |
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177 |
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178 #include "spec_init_separator.cc" |
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179 #include "function_param_iterator.cc" |
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180 #include "function_call_iterator.cc" |
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181 #include "function_call_param_iterator.cc" |
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182 #include "type_initial_value.cc" |
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183 #include "search_fb_instance_decl.cc" |
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184 #include "search_base_type.cc" |
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185 #include "search_var_instance_decl.cc" |
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186 #include "decompose_var_instance_name.cc" |
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187 #include "search_varfb_instance_type.cc" |
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188 #include "search_constant_type.cc" |
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189 #include "search_expression_type.cc" |
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190 |
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191 #include "generate_c_base.cc" |
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192 #include "generate_c_typedecl.cc" |
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193 #include "generate_c_sfcdecl.cc" |
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194 #include "generate_c_vardecl.cc" |
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195 #include "generate_c_configbody.cc" |
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196 #include "generate_location_list.cc" |
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197 |
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198 /***********************************************************************/ |
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199 /***********************************************************************/ |
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200 /***********************************************************************/ |
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201 /***********************************************************************/ |
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202 |
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203 /* Generate a name for a temporary variable. |
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204 * Each new name generated is appended a different number, |
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205 * starting off from 0. |
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206 * After calling reset(), the names will start off again from 0. |
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207 */ |
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208 #define VAR_LEADER "__" |
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209 #define TEMP_VAR VAR_LEADER "TMP_" |
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210 #define SOURCE_VAR VAR_LEADER "SRC_" |
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211 |
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212 #include "generate_c_tempvardecl.cc" |
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213 |
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214 #include "generate_c_st.cc" |
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215 #include "generate_c_il.cc" |
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216 |
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217 #include "generate_c.hh" |
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218 |
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219 /***********************************************************************/ |
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220 /***********************************************************************/ |
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221 /***********************************************************************/ |
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222 /***********************************************************************/ |
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223 |
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224 #define MILLISECOND 1000000 |
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225 #define SECOND 1000 * MILLISECOND |
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226 |
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227 /* A helper class that knows how to generate code for both the IL and ST languages... */ |
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228 class calculate_time_c: public iterator_visitor_c { |
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229 private: |
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230 unsigned long time; |
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231 float current_value; |
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232 |
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233 public: |
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234 calculate_time_c(void){time = 0;}; |
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235 |
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236 unsigned long get_time(void) {return time;}; |
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237 |
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238 void *get_integer_value(token_c *token) { |
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239 std::string str = ""; |
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240 for (unsigned int i = 0; i < strlen(token->value); i++) |
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241 if (token->value[i] != '_') |
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242 str += token->value[i]; |
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243 current_value = atof(str.c_str()); |
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244 return NULL; |
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245 } |
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246 |
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247 void *get_float_value(token_c *token) { |
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248 current_value = atof(token->value); |
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249 return NULL; |
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250 } |
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251 |
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252 /******************************/ |
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253 /* B 1.2.1 - Numeric Literals */ |
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254 /******************************/ |
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255 |
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256 void *visit(integer_c *symbol) {return get_integer_value(symbol);} |
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257 |
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258 /************************/ |
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259 /* B 1.2.3.1 - Duration */ |
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260 /************************/ |
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261 |
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262 /* SYM_REF2(duration_c, neg, interval) */ |
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263 void *visit(duration_c *symbol) { |
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264 if (symbol->neg != NULL) |
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265 ERROR; |
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266 symbol->interval->accept(*this); |
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267 return NULL; |
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268 } |
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269 |
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270 /* SYM_TOKEN(fixed_point_c) */ |
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271 void *visit(fixed_point_c *symbol) {return get_float_value(symbol);} |
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272 |
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273 /* SYM_REF2(days_c, days, hours) */ |
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274 void *visit(days_c *symbol) { |
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275 if (symbol->hours) |
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276 symbol->hours->accept(*this); |
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277 symbol->days->accept(*this); |
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278 time += (unsigned long)(current_value * 24 * 3600 * SECOND); |
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279 return NULL; |
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280 } |
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281 |
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282 /* SYM_REF2(hours_c, hours, minutes) */ |
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283 void *visit(hours_c *symbol) { |
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284 if (symbol->minutes) |
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285 symbol->minutes->accept(*this); |
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286 symbol->hours->accept(*this); |
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287 time += (unsigned long)(current_value * 3600 * SECOND); |
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288 return NULL; |
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289 } |
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290 |
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291 /* SYM_REF2(minutes_c, minutes, seconds) */ |
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292 void *visit(minutes_c *symbol) { |
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293 if (symbol->seconds) |
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294 symbol->seconds->accept(*this); |
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295 symbol->minutes->accept(*this); |
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296 time += (unsigned long)(current_value * 60 * SECOND); |
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297 return NULL; |
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298 } |
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299 |
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300 /* SYM_REF2(seconds_c, seconds, milliseconds) */ |
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301 void *visit(seconds_c *symbol) { |
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302 if (symbol->milliseconds) |
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303 symbol->milliseconds->accept(*this); |
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304 symbol->seconds->accept(*this); |
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305 time += (unsigned long)(current_value * SECOND); |
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306 return NULL; |
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307 } |
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308 |
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309 /* SYM_REF2(milliseconds_c, milliseconds, unused) */ |
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310 void *visit(milliseconds_c *symbol) { |
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311 symbol->milliseconds->accept(*this); |
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312 time += (unsigned long)(current_value * MILLISECOND); |
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313 return NULL; |
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314 } |
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315 }; |
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316 |
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317 /***********************************************************************/ |
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318 /***********************************************************************/ |
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319 /***********************************************************************/ |
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320 /***********************************************************************/ |
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321 |
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322 class calculate_common_ticktime_c: public iterator_visitor_c { |
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323 private: |
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324 unsigned long common_ticktime; |
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325 |
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326 public: |
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327 calculate_common_ticktime_c(void){common_ticktime = 0;} |
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328 |
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329 unsigned long euclide(unsigned long a, unsigned long b) { |
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330 unsigned long c = a % b; |
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331 if (c == 0) |
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332 return b; |
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333 else |
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334 return euclide(b, c); |
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335 } |
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336 |
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337 void update_ticktime(unsigned long time) { |
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338 if (common_ticktime == 0) |
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339 common_ticktime = time; |
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340 else if (time > common_ticktime) |
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341 common_ticktime = euclide(time, common_ticktime); |
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342 else |
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343 common_ticktime = euclide(common_ticktime, time); |
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344 } |
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345 |
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346 unsigned long get_ticktime(void) { |
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347 return common_ticktime; |
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348 } |
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349 |
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350 /* TASK task_name task_initialization */ |
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351 //SYM_REF2(task_configuration_c, task_name, task_initialization) |
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352 void *visit(task_initialization_c *symbol) { |
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353 calculate_time_c calculate_time; |
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354 unsigned long time = 0; |
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355 if (symbol->interval_data_source != NULL) { |
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356 symbol->interval_data_source->accept(calculate_time); |
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357 time = calculate_time.get_time(); |
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358 } |
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359 if (time > 0) |
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360 update_ticktime(time); |
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361 return NULL; |
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362 } |
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363 }; |
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364 |
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365 /***********************************************************************/ |
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366 /***********************************************************************/ |
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367 /***********************************************************************/ |
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368 /***********************************************************************/ |
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369 |
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370 /* A helper class that knows how to generate code for both the IL and ST languages... */ |
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371 class generate_c_SFC_IL_ST_c: public null_visitor_c { |
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372 private: |
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373 stage4out_c *s4o_ptr; |
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374 symbol_c *scope; |
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375 const char *variable_prefix; |
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376 |
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377 public: |
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378 generate_c_SFC_IL_ST_c(stage4out_c *s4o_ptr, symbol_c *scope, const char *variable_prefix = NULL); |
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379 /*********************************************/ |
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380 /* B.1.6 Sequential function chart elements */ |
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381 /*********************************************/ |
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382 |
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383 /*| sequential_function_chart sfc_network*/ |
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384 void *visit(sequential_function_chart_c * symbol); |
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385 |
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386 /****************************************/ |
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387 /* B.2 - Language IL (Instruction List) */ |
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388 /****************************************/ |
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389 |
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390 /***********************************/ |
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391 /* B 2.1 Instructions and Operands */ |
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392 /***********************************/ |
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393 /*| instruction_list il_instruction */ |
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394 void *visit(instruction_list_c *symbol); |
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395 |
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396 /* Remainder implemented in generate_c_il_c... */ |
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397 |
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398 /***************************************/ |
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399 /* B.3 - Language ST (Structured Text) */ |
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400 /***************************************/ |
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401 /***********************/ |
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402 /* B 3.1 - Expressions */ |
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403 /***********************/ |
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404 /* Implemented in generate_c_st_c */ |
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405 |
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406 /********************/ |
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407 /* B 3.2 Statements */ |
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408 /********************/ |
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409 void *visit(statement_list_c *symbol); |
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410 |
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411 /* Remainder implemented in generate_c_st_c... */ |
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412 }; |
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413 |
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414 #include "generate_c_sfc.cc" |
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415 |
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416 generate_c_SFC_IL_ST_c::generate_c_SFC_IL_ST_c(stage4out_c *s4o_ptr, symbol_c *scope, const char *variable_prefix) { |
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417 if (NULL == scope) ERROR; |
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418 this->s4o_ptr = s4o_ptr; |
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419 this->scope = scope; |
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420 this->variable_prefix = variable_prefix; |
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421 } |
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422 |
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423 void *generate_c_SFC_IL_ST_c::visit(sequential_function_chart_c * symbol) { |
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424 generate_c_sfc_c generate_c_sfc(s4o_ptr, scope, variable_prefix); |
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425 generate_c_sfc.generate(symbol); |
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426 return NULL; |
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427 } |
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428 |
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429 void *generate_c_SFC_IL_ST_c::visit(instruction_list_c *symbol) { |
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430 generate_c_il_c generate_c_il(s4o_ptr, scope, variable_prefix); |
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431 generate_c_il.generate(symbol); |
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432 return NULL; |
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433 } |
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434 |
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435 void *generate_c_SFC_IL_ST_c::visit(statement_list_c *symbol) { |
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436 generate_c_st_c generate_c_st(s4o_ptr, scope, variable_prefix); |
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437 generate_c_st.generate(symbol); |
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438 return NULL; |
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439 } |
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440 |
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441 |
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442 |
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443 |
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444 /***********************************************************************/ |
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445 /***********************************************************************/ |
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446 /***********************************************************************/ |
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447 /***********************************************************************/ |
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448 /***********************************************************************/ |
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449 |
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450 |
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451 class generate_c_pous_c: public generate_c_typedecl_c { |
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452 |
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453 public: |
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454 generate_c_pous_c(stage4out_c *s4o_ptr) |
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455 : generate_c_typedecl_c(s4o_ptr) {}; |
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456 virtual ~generate_c_pous_c(void) {} |
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457 |
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458 |
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459 public: |
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460 |
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461 /*************************/ |
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462 /* B.1 - Common elements */ |
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463 /*************************/ |
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464 /*******************************************/ |
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465 /* B 1.1 - Letters, digits and identifiers */ |
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466 /*******************************************/ |
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467 /* done in base class(es) */ |
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468 |
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469 /*********************/ |
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470 /* B 1.2 - Constants */ |
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471 /*********************/ |
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472 /* originally empty... */ |
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473 |
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474 /******************************/ |
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475 /* B 1.2.1 - Numeric Literals */ |
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476 /******************************/ |
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477 /* done in base class(es) */ |
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478 |
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479 /*******************************/ |
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480 /* B.1.2.2 Character Strings */ |
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481 /*******************************/ |
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482 /* done in base class(es) */ |
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483 |
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484 /***************************/ |
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485 /* B 1.2.3 - Time Literals */ |
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486 /***************************/ |
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487 /************************/ |
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488 /* B 1.2.3.1 - Duration */ |
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489 /************************/ |
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490 /* done in base class(es) */ |
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491 |
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492 /************************************/ |
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493 /* B 1.2.3.2 - Time of day and Date */ |
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494 /************************************/ |
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495 /* done in base class(es) */ |
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496 |
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497 /**********************/ |
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498 /* B.1.3 - Data types */ |
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499 /**********************/ |
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500 /***********************************/ |
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501 /* B 1.3.1 - Elementary Data Types */ |
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502 /***********************************/ |
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503 /* done in base class(es) */ |
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504 |
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505 /********************************/ |
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506 /* B.1.3.2 - Generic data types */ |
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507 /********************************/ |
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508 /* originally empty... */ |
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509 |
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510 /********************************/ |
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511 /* B 1.3.3 - Derived data types */ |
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512 /********************************/ |
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513 /* done in base class(es) */ |
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514 |
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515 /*********************/ |
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516 /* B 1.4 - Variables */ |
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517 /*********************/ |
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518 /* done in base class(es) */ |
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519 |
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520 /********************************************/ |
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521 /* B.1.4.1 Directly Represented Variables */ |
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522 /********************************************/ |
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523 /* done in base class(es) */ |
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524 |
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525 /*************************************/ |
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526 /* B.1.4.2 Multi-element Variables */ |
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527 /*************************************/ |
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528 /* done in base class(es) */ |
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529 |
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530 /******************************************/ |
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531 /* B 1.4.3 - Declaration & Initialisation */ |
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532 /******************************************/ |
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533 /* done in base class(es) */ |
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534 |
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535 /**************************************/ |
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536 /* B.1.5 - Program organization units */ |
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537 /**************************************/ |
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538 /***********************/ |
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539 /* B 1.5.1 - Functions */ |
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540 /***********************/ |
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541 |
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542 public: |
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543 /* FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ |
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544 /* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ |
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545 void *visit(function_declaration_c *symbol) { |
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546 generate_c_vardecl_c *vardecl; |
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547 TRACE("function_declaration_c"); |
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548 |
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549 /* start off by adding this declaration to the global |
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550 * function declaration symbol table... |
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551 */ |
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552 function_symtable.insert(symbol->derived_function_name, symbol); |
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553 |
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554 /* (A) Function declaration... */ |
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555 /* (A.1) Function return type */ |
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556 s4o.print("// FUNCTION\n"); |
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557 symbol->type_name->accept(*this); /* return type */ |
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558 s4o.print(" "); |
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559 /* (A.2) Function name */ |
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560 symbol->derived_function_name->accept(*this); |
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561 s4o.print("("); |
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562 |
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563 /* (A.3) Function parameters */ |
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564 s4o.indent_right(); |
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565 vardecl = new generate_c_vardecl_c(&s4o, |
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566 generate_c_vardecl_c::finterface_vf, |
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567 generate_c_vardecl_c::input_vt | |
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568 generate_c_vardecl_c::output_vt | |
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569 generate_c_vardecl_c::inoutput_vt); |
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570 vardecl->print(symbol->var_declarations_list); |
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571 delete vardecl; |
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572 s4o.indent_left(); |
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573 |
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574 s4o.print(")\n" + s4o.indent_spaces + "{\n"); |
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575 |
|
576 /* (B) Function local variable declaration */ |
|
577 /* (B.1) Variables declared in ST source code */ |
|
578 s4o.indent_right(); |
|
579 vardecl = new generate_c_vardecl_c(&s4o, generate_c_vardecl_c::localinit_vf, generate_c_vardecl_c::private_vt); |
|
580 vardecl->print(symbol->var_declarations_list); |
|
581 delete vardecl; |
|
582 |
|
583 /* (B.2) Temporary variable for function's return value */ |
|
584 /* It will have the same name as the function itself! */ |
|
585 s4o.print(s4o.indent_spaces); |
|
586 symbol->type_name->accept(*this); /* return type */ |
|
587 s4o.print(" "); |
|
588 symbol->derived_function_name->accept(*this); |
|
589 s4o.print(" = "); |
|
590 { |
|
591 /* get the default value of this variable's type */ |
|
592 symbol_c *default_value = (symbol_c *)symbol->type_name->accept(*type_initial_value_c::instance()); |
|
593 if (default_value == NULL) ERROR; |
|
594 default_value->accept(*this); |
|
595 } |
|
596 s4o.print(";\n\n"); |
|
597 |
|
598 /* (C) Function body */ |
|
599 generate_c_SFC_IL_ST_c generate_c_code(&s4o, symbol); |
|
600 symbol->function_body->accept(generate_c_code); |
|
601 s4o.print(s4o.indent_spaces + "return "); |
|
602 symbol->derived_function_name->accept(*this); |
|
603 s4o.print(";\n"); |
|
604 s4o.indent_left(); |
|
605 s4o.print(s4o.indent_spaces + "}\n\n\n"); |
|
606 |
|
607 return NULL; |
|
608 } |
|
609 |
|
610 |
|
611 /* The remaining var_declarations_list_c, function_var_decls_c |
|
612 * and var2_init_decl_list_c are handled in the generate_c_vardecl_c class |
|
613 */ |
|
614 |
|
615 |
|
616 /*****************************/ |
|
617 /* B 1.5.2 - Function Blocks */ |
|
618 /*****************************/ |
|
619 public: |
|
620 /* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */ |
|
621 //SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused) |
|
622 void *visit(function_block_declaration_c *symbol) { |
|
623 generate_c_vardecl_c *vardecl; |
|
624 generate_c_sfcdecl_c *sfcdecl; |
|
625 TRACE("function_block_declaration_c"); |
|
626 |
|
627 /* start off by adding this declaration to the global |
|
628 * function block declaration symbol table... |
|
629 */ |
|
630 function_block_type_symtable.insert(symbol->fblock_name, symbol); |
|
631 |
|
632 /* (A) Function Block data structure declaration... */ |
|
633 /* (A.1) Data structure declaration */ |
|
634 s4o.print("// FUNCTION_BLOCK "); |
|
635 symbol->fblock_name->accept(*this); |
|
636 s4o.print("\n// Data part\n"); |
|
637 s4o.print("typedef struct {\n"); |
|
638 s4o.indent_right(); |
|
639 /* (A.2) Public variables: i.e. the function parameters... */ |
|
640 s4o.print(s4o.indent_spaces + "// FB Interface - IN, OUT, IN_OUT variables\n"); |
|
641 vardecl = new generate_c_vardecl_c(&s4o, |
|
642 generate_c_vardecl_c::local_vf, |
|
643 generate_c_vardecl_c::input_vt | |
|
644 generate_c_vardecl_c::output_vt | |
|
645 generate_c_vardecl_c::inoutput_vt); |
|
646 vardecl->print(symbol->var_declarations); |
|
647 delete vardecl; |
|
648 s4o.print("\n"); |
|
649 /* (A.3) Private internal variables */ |
|
650 s4o.print(s4o.indent_spaces + "// FB private variables - TEMP, private and located variables\n"); |
|
651 vardecl = new generate_c_vardecl_c(&s4o, |
|
652 generate_c_vardecl_c::local_vf, |
|
653 generate_c_vardecl_c::temp_vt | |
|
654 generate_c_vardecl_c::private_vt | |
|
655 generate_c_vardecl_c::located_vt | |
|
656 generate_c_vardecl_c::external_vt); |
|
657 vardecl->print(symbol->var_declarations); |
|
658 delete vardecl; |
|
659 /* (A.4) Generate private internal variables for SFC */ |
|
660 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::sfcdecl_sd); |
|
661 sfcdecl->print(symbol->fblock_body); |
|
662 delete sfcdecl; |
|
663 s4o.print("\n"); |
|
664 |
|
665 /* (A.5) Function Block data structure type name. */ |
|
666 s4o.indent_left(); |
|
667 s4o.print("} "); |
|
668 symbol->fblock_name->accept(*this); |
|
669 s4o.print(";\n\n"); |
|
670 |
|
671 |
|
672 /* (B) Constructor */ |
|
673 /* (B.1) Constructor name... */ |
|
674 s4o.print(s4o.indent_spaces + "void "); |
|
675 symbol->fblock_name->accept(*this); |
|
676 s4o.print(FB_INIT_SUFFIX); |
|
677 s4o.print("("); |
|
678 |
|
679 /* first and only parameter is a pointer to the data */ |
|
680 symbol->fblock_name->accept(*this); |
|
681 s4o.print(" *"); |
|
682 s4o.print(FB_FUNCTION_PARAM); |
|
683 s4o.print(") {\n"); |
|
684 s4o.indent_right(); |
|
685 |
|
686 /* (B.2) Member initializations... */ |
|
687 s4o.print(s4o.indent_spaces); |
|
688 vardecl = new generate_c_vardecl_c(&s4o, |
|
689 generate_c_vardecl_c::constructorinit_vf, |
|
690 generate_c_vardecl_c::input_vt | |
|
691 generate_c_vardecl_c::output_vt | |
|
692 generate_c_vardecl_c::inoutput_vt | |
|
693 generate_c_vardecl_c::private_vt | |
|
694 generate_c_vardecl_c::located_vt | |
|
695 generate_c_vardecl_c::external_vt); |
|
696 vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->"); |
|
697 delete vardecl; |
|
698 s4o.print("\n"); |
|
699 /* (B.3) Generate private internal variables for SFC */ |
|
700 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::sfcinit_sd); |
|
701 sfcdecl->print(symbol->fblock_body, FB_FUNCTION_PARAM"->"); |
|
702 delete sfcdecl; |
|
703 s4o.indent_left(); |
|
704 s4o.print(s4o.indent_spaces + "}\n\n"); |
|
705 |
|
706 |
|
707 /* (C) Function with FB body */ |
|
708 /* (C.1) Step definitions */ |
|
709 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::stepdef_sd); |
|
710 sfcdecl->print(symbol->fblock_body); |
|
711 delete sfcdecl; |
|
712 |
|
713 /* (C.2) Action definitions */ |
|
714 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::actiondef_sd); |
|
715 sfcdecl->print(symbol->fblock_body); |
|
716 delete sfcdecl; |
|
717 |
|
718 /* (C.3) Function declaration */ |
|
719 s4o.print("// Code part\n"); |
|
720 /* function interface */ |
|
721 s4o.print("void "); |
|
722 symbol->fblock_name->accept(*this); |
|
723 s4o.print(FB_FUNCTION_SUFFIX); |
|
724 s4o.print("("); |
|
725 /* first and only parameter is a pointer to the data */ |
|
726 symbol->fblock_name->accept(*this); |
|
727 s4o.print(" *"); |
|
728 s4o.print(FB_FUNCTION_PARAM); |
|
729 s4o.print(") {\n"); |
|
730 s4o.indent_right(); |
|
731 |
|
732 /* (C.4) Initialize TEMP variables */ |
|
733 /* function body */ |
|
734 s4o.print(s4o.indent_spaces + "// Initialise TEMP variables\n"); |
|
735 vardecl = new generate_c_vardecl_c(&s4o, |
|
736 generate_c_vardecl_c::init_vf, |
|
737 generate_c_vardecl_c::temp_vt); |
|
738 vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->"); |
|
739 delete vardecl; |
|
740 s4o.print("\n"); |
|
741 |
|
742 /* (C.5) Function code */ |
|
743 generate_c_SFC_IL_ST_c generate_c_code(&s4o, symbol, FB_FUNCTION_PARAM"->"); |
|
744 symbol->fblock_body->accept(generate_c_code); |
|
745 s4o.indent_left(); |
|
746 s4o.print(s4o.indent_spaces + "} // "); |
|
747 symbol->fblock_name->accept(*this); |
|
748 s4o.print(FB_FUNCTION_SUFFIX); |
|
749 s4o.print(s4o.indent_spaces + "() \n\n"); |
|
750 |
|
751 /* (C.6) Step undefinitions */ |
|
752 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::stepundef_sd); |
|
753 sfcdecl->print(symbol->fblock_body); |
|
754 delete sfcdecl; |
|
755 |
|
756 /* (C.7) Action undefinitions */ |
|
757 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::actionundef_sd); |
|
758 sfcdecl->print(symbol->fblock_body); |
|
759 delete sfcdecl; |
|
760 |
|
761 s4o.indent_left(); |
|
762 s4o.print("\n\n\n\n"); |
|
763 |
|
764 return NULL; |
|
765 } |
|
766 |
|
767 |
|
768 /* The remaining temp_var_decls_c, temp_var_decls_list_c |
|
769 * and non_retentive_var_decls_c are handled in the generate_c_vardecl_c class |
|
770 */ |
|
771 |
|
772 |
|
773 /**********************/ |
|
774 /* B 1.5.3 - Programs */ |
|
775 /**********************/ |
|
776 |
|
777 |
|
778 |
|
779 public: |
|
780 /* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */ |
|
781 //SYM_REF4(program_declaration_c, program_type_name, var_declarations, function_block_body, unused) |
|
782 void *visit(program_declaration_c *symbol) { |
|
783 generate_c_vardecl_c *vardecl; |
|
784 generate_c_sfcdecl_c *sfcdecl; |
|
785 TRACE("program_declaration_c"); |
|
786 |
|
787 /* start off by adding this declaration to the global |
|
788 * program declaration symbol table... |
|
789 */ |
|
790 program_type_symtable.insert(symbol->program_type_name, symbol); |
|
791 |
|
792 /* (A) Program data structure declaration... */ |
|
793 /* (A.1) Data structure declaration */ |
|
794 s4o.print("// PROGRAM "); |
|
795 symbol->program_type_name->accept(*this); |
|
796 s4o.print("\n// Data part\n"); |
|
797 s4o.print("typedef struct {\n"); |
|
798 s4o.indent_right(); |
|
799 |
|
800 /* (A.2) Public variables: i.e. the program parameters... */ |
|
801 s4o.print(s4o.indent_spaces + "// PROGRAM Interface - IN, OUT, IN_OUT variables\n"); |
|
802 vardecl = new generate_c_vardecl_c(&s4o, |
|
803 generate_c_vardecl_c::local_vf, |
|
804 generate_c_vardecl_c::input_vt | |
|
805 generate_c_vardecl_c::output_vt | |
|
806 generate_c_vardecl_c::inoutput_vt); |
|
807 vardecl->print(symbol->var_declarations); |
|
808 delete vardecl; |
|
809 s4o.print("\n"); |
|
810 /* (A.3) Private internal variables */ |
|
811 s4o.print(s4o.indent_spaces + "// PROGRAM private variables - TEMP, private and located variables\n"); |
|
812 vardecl = new generate_c_vardecl_c(&s4o, |
|
813 generate_c_vardecl_c::local_vf, |
|
814 generate_c_vardecl_c::temp_vt | |
|
815 generate_c_vardecl_c::private_vt | |
|
816 generate_c_vardecl_c::located_vt | |
|
817 generate_c_vardecl_c::external_vt); |
|
818 vardecl->print(symbol->var_declarations); |
|
819 delete vardecl; |
|
820 /* (A.4) Generate private internal variables for SFC */ |
|
821 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::sfcdecl_sd); |
|
822 sfcdecl->print(symbol->function_block_body); |
|
823 delete sfcdecl; |
|
824 |
|
825 /* (A.5) Program data structure type name. */ |
|
826 s4o.indent_left(); |
|
827 s4o.print("} "); |
|
828 symbol->program_type_name->accept(*this); |
|
829 s4o.print(";\n\n"); |
|
830 |
|
831 /* (B) Constructor */ |
|
832 /* (B.1) Constructor name... */ |
|
833 s4o.print(s4o.indent_spaces + "void "); |
|
834 symbol->program_type_name->accept(*this); |
|
835 s4o.print(FB_INIT_SUFFIX); |
|
836 s4o.print("("); |
|
837 |
|
838 /* first and only parameter is a pointer to the data */ |
|
839 symbol->program_type_name->accept(*this); |
|
840 s4o.print(" *"); |
|
841 s4o.print(FB_FUNCTION_PARAM); |
|
842 s4o.print(") {\n"); |
|
843 s4o.indent_right(); |
|
844 |
|
845 /* (B.2) Member initializations... */ |
|
846 s4o.print(s4o.indent_spaces); |
|
847 vardecl = new generate_c_vardecl_c(&s4o, |
|
848 generate_c_vardecl_c::constructorinit_vf, |
|
849 generate_c_vardecl_c::input_vt | |
|
850 generate_c_vardecl_c::output_vt | |
|
851 generate_c_vardecl_c::inoutput_vt | |
|
852 generate_c_vardecl_c::private_vt | |
|
853 generate_c_vardecl_c::located_vt | |
|
854 generate_c_vardecl_c::external_vt); |
|
855 vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->"); |
|
856 delete vardecl; |
|
857 s4o.print("\n"); |
|
858 /* (B.3) Generate private internal variables for SFC */ |
|
859 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::sfcinit_sd); |
|
860 sfcdecl->print(symbol->function_block_body,FB_FUNCTION_PARAM"->"); |
|
861 delete sfcdecl; |
|
862 |
|
863 s4o.indent_left(); |
|
864 s4o.print(s4o.indent_spaces + "}\n\n"); |
|
865 |
|
866 /* (C) Function with PROGRAM body */ |
|
867 /* (C.1) Step definitions */ |
|
868 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::stepdef_sd); |
|
869 sfcdecl->print(symbol->function_block_body); |
|
870 delete sfcdecl; |
|
871 |
|
872 /* (C.2) Action definitions */ |
|
873 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::actiondef_sd); |
|
874 sfcdecl->print(symbol->function_block_body); |
|
875 delete sfcdecl; |
|
876 |
|
877 /* (C.3) Function declaration */ |
|
878 s4o.print("// Code part\n"); |
|
879 /* function interface */ |
|
880 s4o.print("void "); |
|
881 symbol->program_type_name->accept(*this); |
|
882 s4o.print(FB_FUNCTION_SUFFIX); |
|
883 s4o.print("("); |
|
884 /* first and only parameter is a pointer to the data */ |
|
885 symbol->program_type_name->accept(*this); |
|
886 s4o.print(" *"); |
|
887 s4o.print(FB_FUNCTION_PARAM); |
|
888 s4o.print(") {\n"); |
|
889 s4o.indent_right(); |
|
890 |
|
891 /* (C.4) Initialize TEMP variables */ |
|
892 /* function body */ |
|
893 s4o.print(s4o.indent_spaces + "// Initialise TEMP variables\n"); |
|
894 vardecl = new generate_c_vardecl_c(&s4o, |
|
895 generate_c_vardecl_c::init_vf, |
|
896 generate_c_vardecl_c::temp_vt); |
|
897 vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->"); |
|
898 delete vardecl; |
|
899 s4o.print("\n"); |
|
900 |
|
901 /* (C.5) Function code */ |
|
902 generate_c_SFC_IL_ST_c generate_c_code(&s4o, symbol, FB_FUNCTION_PARAM"->"); |
|
903 symbol->function_block_body->accept(generate_c_code); |
|
904 s4o.indent_left(); |
|
905 s4o.print(s4o.indent_spaces + "} // "); |
|
906 symbol->program_type_name->accept(*this); |
|
907 s4o.print(FB_FUNCTION_SUFFIX); |
|
908 s4o.print(s4o.indent_spaces + "() \n\n"); |
|
909 |
|
910 /* (C.6) Step undefinitions */ |
|
911 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::stepundef_sd); |
|
912 sfcdecl->print(symbol->function_block_body); |
|
913 delete sfcdecl; |
|
914 |
|
915 /* (C.7) Action undefinitions */ |
|
916 sfcdecl = new generate_c_sfcdecl_c(&s4o, generate_c_sfcdecl_c::actionundef_sd); |
|
917 sfcdecl->print(symbol->function_block_body); |
|
918 delete sfcdecl; |
|
919 |
|
920 s4o.indent_left(); |
|
921 s4o.print("\n\n\n\n"); |
|
922 |
|
923 return NULL; |
|
924 } |
|
925 |
|
926 }; /* generate_c_pous_c */ |
|
927 |
|
928 /***********************************************************************/ |
|
929 /***********************************************************************/ |
|
930 /***********************************************************************/ |
|
931 /***********************************************************************/ |
|
932 /***********************************************************************/ |
|
933 /***********************************************************************/ |
|
934 /***********************************************************************/ |
|
935 /***********************************************************************/ |
|
936 |
|
937 class generate_c_config_c: public generate_c_typedecl_c { |
|
938 |
|
939 public: |
|
940 generate_c_config_c(stage4out_c *s4o_ptr) |
|
941 : generate_c_typedecl_c(s4o_ptr) {}; |
|
942 virtual ~generate_c_config_c(void) {} |
|
943 |
|
944 typedef enum { |
|
945 initprotos_dt, |
|
946 initdeclare_dt, |
|
947 runprotos_dt, |
|
948 rundeclare_dt |
|
949 } declaretype_t; |
|
950 |
|
951 declaretype_t wanted_declaretype; |
|
952 |
|
953 /********************************/ |
|
954 /* B 1.7 Configuration elements */ |
|
955 /********************************/ |
|
956 |
|
957 |
|
958 public: |
|
959 /* |
|
960 CONFIGURATION configuration_name |
|
961 optional_global_var_declarations |
|
962 (resource_declaration_list | single_resource_declaration) |
|
963 optional_access_declarations |
|
964 optional_instance_specific_initializations |
|
965 END_CONFIGURATION |
|
966 */ |
|
967 /* |
|
968 SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused) |
|
969 */ |
|
970 void *visit(configuration_declaration_c *symbol) { |
|
971 generate_c_vardecl_c *vardecl; |
|
972 |
|
973 /* Insert the header... */ |
|
974 s4o.print("/*******************************************/\n"); |
|
975 s4o.print("/* FILE GENERATED BY iec2c */\n"); |
|
976 s4o.print("/* Editing this file is not recommended... */\n"); |
|
977 s4o.print("/*******************************************/\n\n"); |
|
978 s4o.print("#include \"iec_std_lib.h\"\n\n"); |
|
979 |
|
980 /* (A) configuration declaration... */ |
|
981 /* (A.1) configuration name in comment */ |
|
982 s4o.print("// CONFIGURATION "); |
|
983 symbol->configuration_name->accept(*this); |
|
984 s4o.print("\n"); |
|
985 |
|
986 /* (A.2) Global variables */ |
|
987 vardecl = new generate_c_vardecl_c(&s4o, |
|
988 generate_c_vardecl_c::local_vf, |
|
989 generate_c_vardecl_c::global_vt); |
|
990 vardecl->print(symbol); |
|
991 delete vardecl; |
|
992 s4o.print("\n"); |
|
993 |
|
994 /* (B) Initialisation Function */ |
|
995 /* (B.1) Ressources initialisation protos... */ |
|
996 wanted_declaretype = initprotos_dt; |
|
997 symbol->resource_declarations->accept(*this); |
|
998 s4o.print("\n"); |
|
999 |
|
1000 /* (B.2) Initialisation function name... */ |
|
1001 s4o.print(s4o.indent_spaces + "void config"); |
|
1002 s4o.print(FB_INIT_SUFFIX); |
|
1003 s4o.print("(void) {\n"); |
|
1004 s4o.indent_right(); |
|
1005 |
|
1006 /* (B.3) Global variables initializations... */ |
|
1007 s4o.print(s4o.indent_spaces); |
|
1008 vardecl = new generate_c_vardecl_c(&s4o, |
|
1009 generate_c_vardecl_c::constructorinit_vf, |
|
1010 generate_c_vardecl_c::global_vt); |
|
1011 vardecl->print(symbol); |
|
1012 delete vardecl; |
|
1013 s4o.print("\n"); |
|
1014 |
|
1015 /* (B.3) Resources initializations... */ |
|
1016 wanted_declaretype = initdeclare_dt; |
|
1017 symbol->resource_declarations->accept(*this); |
|
1018 |
|
1019 s4o.indent_left(); |
|
1020 s4o.print(s4o.indent_spaces + "}\n\n"); |
|
1021 |
|
1022 |
|
1023 /* (C) Run Function*/ |
|
1024 /* (C.1) Resources run functions protos... */ |
|
1025 wanted_declaretype = runprotos_dt; |
|
1026 symbol->resource_declarations->accept(*this); |
|
1027 s4o.print("\n"); |
|
1028 |
|
1029 /* (C.2) Run function name... */ |
|
1030 s4o.print(s4o.indent_spaces + "void config"); |
|
1031 s4o.print(FB_RUN_SUFFIX); |
|
1032 s4o.print("(int tick) {\n"); |
|
1033 s4o.indent_right(); |
|
1034 |
|
1035 /* (C.3) Resources initializations... */ |
|
1036 wanted_declaretype = rundeclare_dt; |
|
1037 symbol->resource_declarations->accept(*this); |
|
1038 |
|
1039 /* (C.3) Close Public Function body */ |
|
1040 s4o.indent_left(); |
|
1041 s4o.print(s4o.indent_spaces + "}\n"); |
|
1042 |
|
1043 return NULL; |
|
1044 } |
|
1045 |
|
1046 void *visit(resource_declaration_c *symbol) { |
|
1047 if (wanted_declaretype == initprotos_dt || wanted_declaretype == runprotos_dt) { |
|
1048 s4o.print(s4o.indent_spaces + "void "); |
|
1049 symbol->resource_name->accept(*this); |
|
1050 if (wanted_declaretype == initprotos_dt) { |
|
1051 s4o.print(FB_INIT_SUFFIX); |
|
1052 s4o.print("(void);\n"); |
|
1053 } |
|
1054 else { |
|
1055 s4o.print(FB_RUN_SUFFIX); |
|
1056 s4o.print("(int tick);\n"); |
|
1057 } |
|
1058 } |
|
1059 if (wanted_declaretype == initdeclare_dt || wanted_declaretype == rundeclare_dt) { |
|
1060 s4o.print(s4o.indent_spaces); |
|
1061 symbol->resource_name->accept(*this); |
|
1062 if (wanted_declaretype == initdeclare_dt) { |
|
1063 s4o.print(FB_INIT_SUFFIX); |
|
1064 s4o.print("();\n"); |
|
1065 } |
|
1066 else { |
|
1067 s4o.print(FB_RUN_SUFFIX); |
|
1068 s4o.print("(tick);\n"); |
|
1069 } |
|
1070 } |
|
1071 return NULL; |
|
1072 } |
|
1073 |
|
1074 void *visit(single_resource_declaration_c *symbol) { |
|
1075 if (wanted_declaretype == initprotos_dt || wanted_declaretype == runprotos_dt) { |
|
1076 s4o.print(s4o.indent_spaces + "void RESOURCE"); |
|
1077 if (wanted_declaretype == initprotos_dt) { |
|
1078 s4o.print(FB_INIT_SUFFIX); |
|
1079 s4o.print("(void);\n"); |
|
1080 } |
|
1081 else { |
|
1082 s4o.print(FB_RUN_SUFFIX); |
|
1083 s4o.print("(int tick);\n"); |
|
1084 } |
|
1085 } |
|
1086 if (wanted_declaretype == initdeclare_dt || wanted_declaretype == rundeclare_dt) { |
|
1087 s4o.print(s4o.indent_spaces + "RESOURCE"); |
|
1088 if (wanted_declaretype == initdeclare_dt) { |
|
1089 s4o.print(FB_INIT_SUFFIX); |
|
1090 s4o.print("();\n"); |
|
1091 } |
|
1092 else { |
|
1093 s4o.print(FB_RUN_SUFFIX); |
|
1094 s4o.print("(tick);\n"); |
|
1095 } |
|
1096 } |
|
1097 return NULL; |
|
1098 } |
|
1099 |
|
1100 }; |
|
1101 |
|
1102 /***********************************************************************/ |
|
1103 /***********************************************************************/ |
|
1104 /***********************************************************************/ |
|
1105 /***********************************************************************/ |
|
1106 /***********************************************************************/ |
|
1107 /***********************************************************************/ |
|
1108 /***********************************************************************/ |
|
1109 /***********************************************************************/ |
|
1110 |
|
1111 |
|
1112 class generate_c_resources_c: public generate_c_typedecl_c { |
|
1113 |
|
1114 search_var_instance_decl_c *search_config_instance; |
|
1115 search_var_instance_decl_c *search_resource_instance; |
|
1116 |
|
1117 private: |
|
1118 /* The name of the resource curretnly being processed... */ |
|
1119 symbol_c *current_resource_name; |
|
1120 symbol_c *current_global_vars; |
|
1121 |
|
1122 public: |
|
1123 generate_c_resources_c(stage4out_c *s4o_ptr, symbol_c *config_scope, symbol_c *resource_scope, unsigned long time) |
|
1124 : generate_c_typedecl_c(s4o_ptr) { |
|
1125 search_config_instance = new search_var_instance_decl_c(config_scope); |
|
1126 search_resource_instance = new search_var_instance_decl_c(resource_scope); |
|
1127 common_ticktime = time; |
|
1128 current_resource_name = NULL; |
|
1129 current_global_vars = NULL; |
|
1130 }; |
|
1131 virtual ~generate_c_resources_c(void) { |
|
1132 delete search_config_instance; |
|
1133 delete search_resource_instance; |
|
1134 } |
|
1135 |
|
1136 typedef enum { |
|
1137 declare_dt, |
|
1138 init_dt, |
|
1139 run_dt |
|
1140 } declaretype_t; |
|
1141 |
|
1142 declaretype_t wanted_declaretype; |
|
1143 |
|
1144 unsigned long common_ticktime; |
|
1145 |
|
1146 const char *current_program_name; |
|
1147 |
|
1148 typedef enum { |
|
1149 assign_at, |
|
1150 send_at |
|
1151 } assigntype_t; |
|
1152 |
|
1153 assigntype_t wanted_assigntype; |
|
1154 |
|
1155 /********************************/ |
|
1156 /* B 1.7 Configuration elements */ |
|
1157 /********************************/ |
|
1158 |
|
1159 /* |
|
1160 RESOURCE resource_name ON resource_type_name |
|
1161 optional_global_var_declarations |
|
1162 single_resource_declaration |
|
1163 END_RESOURCE |
|
1164 */ |
|
1165 // SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration) |
|
1166 void *visit(resource_declaration_c *symbol) { |
|
1167 current_resource_name = symbol->resource_name; |
|
1168 current_global_vars = symbol->global_var_declarations; |
|
1169 |
|
1170 symbol->resource_declaration->accept(*this); |
|
1171 |
|
1172 current_resource_name = NULL; |
|
1173 current_global_vars = NULL; |
|
1174 return NULL; |
|
1175 } |
|
1176 |
|
1177 /* task_configuration_list program_configuration_list */ |
|
1178 // SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list) |
|
1179 void *visit(single_resource_declaration_c *symbol) { |
|
1180 bool single_resource = current_resource_name == NULL; |
|
1181 if (single_resource) |
|
1182 current_resource_name = new identifier_c("RESOURCE"); |
|
1183 generate_c_vardecl_c *vardecl; |
|
1184 |
|
1185 /* Insert the header... */ |
|
1186 s4o.print("/*******************************************/\n"); |
|
1187 s4o.print("/* FILE GENERATED BY iec2c */\n"); |
|
1188 s4o.print("/* Editing this file is not recommended... */\n"); |
|
1189 s4o.print("/*******************************************/\n\n"); |
|
1190 s4o.print("#include \"iec_std_lib.h\"\n\n"); |
|
1191 |
|
1192 /* (A) resource declaration... */ |
|
1193 /* (A.1) resource name in comment */ |
|
1194 s4o.print("// RESOURCE "); |
|
1195 current_resource_name->accept(*this); |
|
1196 s4o.print("\n"); |
|
1197 |
|
1198 /* (A.2) Global variables... */ |
|
1199 if (current_global_vars != NULL) { |
|
1200 vardecl = new generate_c_vardecl_c(&s4o, |
|
1201 generate_c_vardecl_c::local_vf, |
|
1202 generate_c_vardecl_c::global_vt); |
|
1203 vardecl->print(current_global_vars); |
|
1204 delete vardecl; |
|
1205 } |
|
1206 s4o.print("\n"); |
|
1207 |
|
1208 /* (A.3) POUs inclusion */ |
|
1209 s4o.print("#include \"POUS.c\"\n\n"); |
|
1210 |
|
1211 /* (A.4) Resource programs declaration... */ |
|
1212 wanted_declaretype = declare_dt; |
|
1213 symbol->program_configuration_list->accept(*this); |
|
1214 s4o.print("\n"); |
|
1215 |
|
1216 /* (B) resource initialisation function... */ |
|
1217 /* (B.1) initialisation function name... */ |
|
1218 s4o.print("void "); |
|
1219 current_resource_name->accept(*this); |
|
1220 s4o.print(FB_INIT_SUFFIX); |
|
1221 s4o.print("(void) {\n"); |
|
1222 s4o.indent_right(); |
|
1223 |
|
1224 /* (B.2) Global variables initialisations... */ |
|
1225 if (current_global_vars != NULL) { |
|
1226 s4o.print(s4o.indent_spaces); |
|
1227 vardecl = new generate_c_vardecl_c(&s4o, |
|
1228 generate_c_vardecl_c::constructorinit_vf, |
|
1229 generate_c_vardecl_c::global_vt); |
|
1230 vardecl->print(current_global_vars); |
|
1231 delete vardecl; |
|
1232 } |
|
1233 s4o.print("\n"); |
|
1234 |
|
1235 /* (B.3) Resource programs initialisations... */ |
|
1236 wanted_declaretype = init_dt; |
|
1237 symbol->program_configuration_list->accept(*this); |
|
1238 |
|
1239 s4o.indent_left(); |
|
1240 s4o.print("}\n\n"); |
|
1241 |
|
1242 /* (C) Resource run function... */ |
|
1243 /* (C.1) Run function name... */ |
|
1244 s4o.print("void "); |
|
1245 current_resource_name->accept(*this); |
|
1246 s4o.print(FB_RUN_SUFFIX); |
|
1247 s4o.print("(int tick) {\n"); |
|
1248 s4o.indent_right(); |
|
1249 |
|
1250 /* (C.2) Task management... */ |
|
1251 symbol->task_configuration_list->accept(*this); |
|
1252 |
|
1253 /* (C.3) Program run declaration... */ |
|
1254 wanted_declaretype = run_dt; |
|
1255 symbol->program_configuration_list->accept(*this); |
|
1256 |
|
1257 s4o.indent_left(); |
|
1258 s4o.print("}\n\n"); |
|
1259 |
|
1260 if (single_resource) { |
|
1261 delete current_resource_name; |
|
1262 current_resource_name = NULL; |
|
1263 } |
|
1264 return NULL; |
|
1265 } |
|
1266 |
|
1267 /* PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */ |
|
1268 //SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused) |
|
1269 void *visit(program_configuration_c *symbol) { |
|
1270 if (wanted_declaretype == declare_dt) { |
|
1271 s4o.print(s4o.indent_spaces); |
|
1272 symbol->program_type_name->accept(*this); |
|
1273 s4o.print(" "); |
|
1274 symbol->program_name->accept(*this); |
|
1275 s4o.print(";\n"); |
|
1276 } |
|
1277 if (wanted_declaretype == init_dt) { |
|
1278 s4o.print(s4o.indent_spaces); |
|
1279 symbol->program_type_name->accept(*this); |
|
1280 s4o.print(FB_INIT_SUFFIX); |
|
1281 s4o.print("(&"); |
|
1282 symbol->program_name->accept(*this); |
|
1283 s4o.print(");\n"); |
|
1284 } |
|
1285 if (wanted_declaretype == run_dt) { |
|
1286 current_program_name = ((identifier_c*)(symbol->program_name))->value; |
|
1287 if (symbol->task_name != NULL) { |
|
1288 s4o.print(s4o.indent_spaces); |
|
1289 s4o.print("if (!"); |
|
1290 symbol->task_name->accept(*this); |
|
1291 s4o.print(") {\n"); |
|
1292 s4o.indent_right(); |
|
1293 } |
|
1294 |
|
1295 wanted_assigntype = assign_at; |
|
1296 if (symbol->prog_conf_elements != NULL) |
|
1297 symbol->prog_conf_elements->accept(*this); |
|
1298 |
|
1299 s4o.print(s4o.indent_spaces); |
|
1300 symbol->program_type_name->accept(*this); |
|
1301 s4o.print(FB_FUNCTION_SUFFIX); |
|
1302 s4o.print("(&"); |
|
1303 symbol->program_name->accept(*this); |
|
1304 s4o.print(");\n"); |
|
1305 |
|
1306 wanted_assigntype = send_at; |
|
1307 if (symbol->prog_conf_elements != NULL) |
|
1308 symbol->prog_conf_elements->accept(*this); |
|
1309 |
|
1310 if (symbol->task_name != NULL) { |
|
1311 s4o.indent_left(); |
|
1312 s4o.print(s4o.indent_spaces + "}\n"); |
|
1313 } |
|
1314 } |
|
1315 return NULL; |
|
1316 } |
|
1317 |
|
1318 /* TASK task_name task_initialization */ |
|
1319 //SYM_REF2(task_configuration_c, task_name, task_initialization) |
|
1320 void *visit(task_configuration_c *symbol) { |
|
1321 s4o.print(s4o.indent_spaces + "int "); |
|
1322 symbol->task_name->accept(*this); |
|
1323 s4o.print(" = "); |
|
1324 symbol->task_initialization->accept(*this); |
|
1325 s4o.print(";\n"); |
|
1326 return NULL; |
|
1327 } |
|
1328 |
|
1329 /* '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */ |
|
1330 //SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused) |
|
1331 void *visit(task_initialization_c *symbol) { |
|
1332 if (symbol->interval_data_source != NULL) { |
|
1333 calculate_time_c calculate_time; |
|
1334 symbol->interval_data_source->accept(calculate_time); |
|
1335 unsigned long time = calculate_time.get_time(); |
|
1336 if (time != 0) { |
|
1337 s4o.print("tick % "); |
|
1338 s4o.print_integer((int)(time / common_ticktime)); |
|
1339 } |
|
1340 else |
|
1341 s4o.print("1"); |
|
1342 } |
|
1343 else |
|
1344 s4o.print("1"); |
|
1345 return NULL; |
|
1346 } |
|
1347 |
|
1348 /* any_symbolic_variable ASSIGN prog_data_source */ |
|
1349 //SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source) |
|
1350 void *visit(prog_cnxn_assign_c *symbol) { |
|
1351 if (wanted_assigntype == assign_at) { |
|
1352 symbol_c *var_decl; |
|
1353 unsigned int vartype = 0; |
|
1354 symbol_c *current_var_reference = ((global_var_reference_c *)(symbol->prog_data_source))->global_var_name; |
|
1355 var_decl = search_resource_instance->get_decl(current_var_reference); |
|
1356 if (var_decl == NULL) { |
|
1357 var_decl = search_config_instance->get_decl(current_var_reference); |
|
1358 if (var_decl == NULL) |
|
1359 ERROR; |
|
1360 else |
|
1361 vartype = search_config_instance->get_vartype(); |
|
1362 } |
|
1363 else |
|
1364 vartype = search_resource_instance->get_vartype(); |
|
1365 |
|
1366 s4o.print(s4o.indent_spaces + "{extern "); |
|
1367 var_decl->accept(*this); |
|
1368 s4o.print(" "); |
|
1369 symbol->prog_data_source->accept(*this); |
|
1370 s4o.print("; "); |
|
1371 s4o.print(current_program_name); |
|
1372 s4o.print("."); |
|
1373 symbol->symbolic_variable->accept(*this); |
|
1374 s4o.print(" = "); |
|
1375 if (vartype || search_var_instance_decl_c::global_vt) |
|
1376 s4o.print("*"); |
|
1377 symbol->prog_data_source->accept(*this); |
|
1378 s4o.print(";}\n"); |
|
1379 } |
|
1380 return NULL; |
|
1381 } |
|
1382 |
|
1383 /* any_symbolic_variable SENDTO data_sink */ |
|
1384 //SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, data_sink) |
|
1385 void *visit(prog_cnxn_sendto_c *symbol) { |
|
1386 if (wanted_assigntype == send_at) { |
|
1387 symbol_c *var_decl; |
|
1388 unsigned int vartype = 0; |
|
1389 symbol_c *current_var_reference = ((global_var_reference_c *)(symbol->data_sink))->global_var_name; |
|
1390 var_decl = search_resource_instance->get_decl(current_var_reference); |
|
1391 if (var_decl == NULL) { |
|
1392 var_decl = search_config_instance->get_decl(current_var_reference); |
|
1393 if (var_decl == NULL) |
|
1394 ERROR; |
|
1395 else |
|
1396 vartype = search_config_instance->get_vartype(); |
|
1397 } |
|
1398 else |
|
1399 vartype = search_resource_instance->get_vartype(); |
|
1400 |
|
1401 s4o.print(s4o.indent_spaces); |
|
1402 s4o.print(s4o.indent_spaces + "{extern "); |
|
1403 var_decl->accept(*this); |
|
1404 s4o.print(" "); |
|
1405 symbol->data_sink->accept(*this); |
|
1406 s4o.print("; "); |
|
1407 if (vartype || search_var_instance_decl_c::global_vt) |
|
1408 s4o.print("*"); |
|
1409 symbol->data_sink->accept(*this); |
|
1410 s4o.print(" = "); |
|
1411 s4o.print(current_program_name); |
|
1412 s4o.print("."); |
|
1413 symbol->symbolic_variable->accept(*this); |
|
1414 s4o.print("};\n"); |
|
1415 } |
|
1416 return NULL; |
|
1417 } |
|
1418 |
|
1419 }; |
|
1420 |
|
1421 /***********************************************************************/ |
|
1422 /***********************************************************************/ |
|
1423 /***********************************************************************/ |
|
1424 /***********************************************************************/ |
|
1425 /***********************************************************************/ |
|
1426 /***********************************************************************/ |
|
1427 /***********************************************************************/ |
|
1428 /***********************************************************************/ |
|
1429 |
|
1430 class generate_c_c: public iterator_visitor_c { |
|
1431 protected: |
|
1432 stage4out_c &s4o; |
|
1433 stage4out_c pous_s4o; |
|
1434 stage4out_c located_variables_s4o; |
|
1435 generate_c_pous_c generate_c_pous; |
|
1436 |
|
1437 symbol_c *current_configuration; |
|
1438 |
|
1439 const char *current_name; |
|
1440 const char *current_builddir; |
|
1441 |
|
1442 unsigned long common_ticktime; |
|
1443 |
|
1444 public: |
|
1445 generate_c_c(stage4out_c *s4o_ptr, const char *builddir): |
|
1446 s4o(*s4o_ptr), |
|
1447 pous_s4o(builddir, "POUS", "c"), |
|
1448 located_variables_s4o(builddir, "LOCATED_VARIABLES","h"), |
|
1449 generate_c_pous(&pous_s4o) { |
|
1450 current_builddir = builddir; |
|
1451 current_configuration = NULL; |
|
1452 } |
|
1453 |
|
1454 ~generate_c_c(void) {} |
|
1455 |
|
1456 /***************************/ |
|
1457 /* B 0 - Programming Model */ |
|
1458 /***************************/ |
|
1459 void *visit(library_c *symbol) { |
|
1460 generate_location_list_c generate_location_list(&located_variables_s4o); |
|
1461 symbol->accept(generate_location_list); |
|
1462 |
|
1463 for(int i = 0; i < symbol->n; i++) { |
|
1464 symbol->elements[i]->accept(*this); |
|
1465 } |
|
1466 return NULL; |
|
1467 } |
|
1468 |
|
1469 /*************************/ |
|
1470 /* B.1 - Common elements */ |
|
1471 /*************************/ |
|
1472 /*******************************************/ |
|
1473 /* B 1.1 - Letters, digits and identifiers */ |
|
1474 /*******************************************/ |
|
1475 void *visit(identifier_c *symbol) { |
|
1476 current_name = symbol->value; |
|
1477 return NULL; |
|
1478 } |
|
1479 |
|
1480 /**************************************/ |
|
1481 /* B.1.5 - Program organization units */ |
|
1482 /**************************************/ |
|
1483 /***********************/ |
|
1484 /* B 1.5.1 - Functions */ |
|
1485 /***********************/ |
|
1486 void *visit(function_declaration_c *symbol) { |
|
1487 symbol->accept(generate_c_pous); |
|
1488 return NULL; |
|
1489 } |
|
1490 |
|
1491 /*****************************/ |
|
1492 /* B 1.5.2 - Function Blocks */ |
|
1493 /*****************************/ |
|
1494 void *visit(function_block_declaration_c *symbol) { |
|
1495 symbol->accept(generate_c_pous); |
|
1496 return NULL; |
|
1497 } |
|
1498 |
|
1499 /**********************/ |
|
1500 /* B 1.5.3 - Programs */ |
|
1501 /**********************/ |
|
1502 void *visit(program_declaration_c *symbol) { |
|
1503 symbol->accept(generate_c_pous); |
|
1504 return NULL; |
|
1505 } |
|
1506 |
|
1507 |
|
1508 /********************************/ |
|
1509 /* B 1.7 Configuration elements */ |
|
1510 /********************************/ |
|
1511 void *visit(configuration_declaration_c *symbol) { |
|
1512 static int configuration_count = 0; |
|
1513 |
|
1514 if (configuration_count++) { |
|
1515 /* the first configuration is the one we will use!! */ |
|
1516 ERROR; |
|
1517 } |
|
1518 |
|
1519 current_configuration = symbol; |
|
1520 |
|
1521 calculate_common_ticktime_c calculate_common_ticktime; |
|
1522 symbol->accept(calculate_common_ticktime); |
|
1523 common_ticktime = calculate_common_ticktime.get_ticktime(); |
|
1524 |
|
1525 symbol->configuration_name->accept(*this); |
|
1526 stage4out_c config_s4o(current_builddir, current_name, "c"); |
|
1527 generate_c_config_c generate_c_config(&config_s4o); |
|
1528 symbol->accept(generate_c_config); |
|
1529 |
|
1530 config_s4o.print("int common_ticktime__ = "); |
|
1531 config_s4o.print_integer((int)(common_ticktime / 1000000)); |
|
1532 config_s4o.print("; /*ms*/\n"); |
|
1533 |
|
1534 symbol->resource_declarations->accept(*this); |
|
1535 |
|
1536 current_configuration = NULL; |
|
1537 |
|
1538 return NULL; |
|
1539 } |
|
1540 |
|
1541 void *visit(resource_declaration_c *symbol) { |
|
1542 symbol->resource_name->accept(*this); |
|
1543 stage4out_c resources_s4o(current_builddir, current_name, "c"); |
|
1544 generate_c_resources_c generate_c_resources(&resources_s4o, current_configuration, symbol, common_ticktime); |
|
1545 symbol->accept(generate_c_resources); |
|
1546 return NULL; |
|
1547 } |
|
1548 |
|
1549 void *visit(single_resource_declaration_c *symbol) { |
|
1550 stage4out_c resources_s4o(current_builddir, "RESOURCE", "c"); |
|
1551 generate_c_resources_c generate_c_resources(&resources_s4o, current_configuration, symbol, common_ticktime); |
|
1552 symbol->accept(generate_c_resources); |
|
1553 return NULL; |
|
1554 } |
|
1555 |
|
1556 }; |
|
1557 |
|
1558 /***********************************************************************/ |
|
1559 /***********************************************************************/ |
|
1560 /***********************************************************************/ |
|
1561 /***********************************************************************/ |
|
1562 /***********************************************************************/ |
|
1563 /***********************************************************************/ |
|
1564 /***********************************************************************/ |
|
1565 /***********************************************************************/ |
|
1566 |
|
1567 |
|
1568 |
|
1569 |
|
1570 visitor_c *new_code_generator(stage4out_c *s4o, const char *builddir) {return new generate_c_c(s4o, builddir);} |
|
1571 void delete_code_generator(visitor_c *code_generator) {delete code_generator;} |
|
1572 |
|
1573 |