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1 /* |
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2 * matiec - a compiler for the programming languages defined in IEC 61131-3 |
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3 * |
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4 * Copyright (C) 2012 Mario de Sousa (msousa@fe.up.pt) |
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5 * |
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6 * |
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7 * This program is free software: you can redistribute it and/or modify |
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8 * it under the terms of the GNU General Public License as published by |
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9 * the Free Software Foundation, either version 3 of the License, or |
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10 * (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, |
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 * GNU General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU General Public License |
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 * |
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20 * |
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21 * This code is made available on the understanding that it will not be |
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22 * used in safety-critical situations without a full and competent review. |
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23 */ |
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24 |
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25 /* |
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26 * An IEC 61131-3 compiler. |
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27 * |
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28 * Based on the |
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29 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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30 * |
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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 * Do flow control analysis of the IEC 61131-3 code. |
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36 * |
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37 * We currently only do this for IL code. |
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38 * This class will annotate the abstract syntax tree, by filling in the |
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39 * prev_il_instruction variable in the il_instruction_c, so it points to |
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40 * the previous il_instruction_c object in the instruction list instruction_list_c. |
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41 */ |
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42 |
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43 |
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44 |
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45 #include "../absyntax_utils/absyntax_utils.hh" |
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46 |
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47 |
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48 class flow_control_analysis_c: public iterator_visitor_c { |
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49 |
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50 private: |
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51 search_varfb_instance_type_c *search_varfb_instance_type; |
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52 symbol_c *prev_il_instruction; |
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53 |
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54 public: |
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55 flow_control_analysis_c(symbol_c *ignore); |
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56 virtual ~flow_control_analysis_c(void); |
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57 |
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58 /**************************************/ |
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59 /* B 1.5 - Program organization units */ |
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60 /**************************************/ |
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61 /***********************/ |
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62 /* B 1.5.1 - Functions */ |
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63 /***********************/ |
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64 void *visit(function_declaration_c *symbol); |
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65 |
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66 /*****************************/ |
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67 /* B 1.5.2 - Function blocks */ |
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68 /*****************************/ |
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69 void *visit(function_block_declaration_c *symbol); |
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70 |
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71 /**********************/ |
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72 /* B 1.5.3 - Programs */ |
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73 /**********************/ |
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74 void *visit(program_declaration_c *symbol); |
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75 |
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76 /********************************/ |
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77 /* B 1.7 Configuration elements */ |
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78 /********************************/ |
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79 void *visit(configuration_declaration_c *symbol); |
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80 |
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81 /****************************************/ |
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82 /* B.2 - Language IL (Instruction List) */ |
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83 /****************************************/ |
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84 /***********************************/ |
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85 /* B 2.1 Instructions and Operands */ |
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86 /***********************************/ |
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87 void *visit(instruction_list_c *symbol); |
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88 void *visit(il_instruction_c *symbol); |
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89 // void *visit(il_simple_operation_c *symbol); |
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90 // void *visit(il_function_call_c *symbol); |
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91 // void *visit(il_expression_c *symbol); |
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92 // void *visit(il_fb_call_c *symbol); |
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93 // void *visit(il_formal_funct_call_c *symbol); |
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94 /* |
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95 void *visit(il_operand_list_c *symbol); |
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96 void *visit(simple_instr_list_c *symbol); |
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97 void *visit(il_param_list_c *symbol); |
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98 void *visit(il_param_assignment_c *symbol); |
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99 void *visit(il_param_out_assignment_c *symbol); |
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100 */ |
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101 |
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102 /*******************/ |
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103 /* B 2.2 Operators */ |
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104 /*******************/ |
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105 /* |
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106 void *visit(LD_operator_c *symbol); |
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107 void *visit(LDN_operator_c *symbol); |
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108 void *visit(ST_operator_c *symbol); |
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109 void *visit(STN_operator_c *symbol); |
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110 void *visit(NOT_operator_c *symbol); |
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111 void *visit(S_operator_c *symbol); |
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112 void *visit(R_operator_c *symbol); |
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113 void *visit(S1_operator_c *symbol); |
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114 void *visit(R1_operator_c *symbol); |
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115 void *visit(CLK_operator_c *symbol); |
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116 void *visit(CU_operator_c *symbol); |
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117 void *visit(CD_operator_c *symbol); |
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118 void *visit(PV_operator_c *symbol); |
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119 void *visit(IN_operator_c *symbol); |
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120 void *visit(PT_operator_c *symbol); |
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121 void *visit(AND_operator_c *symbol); |
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122 void *visit(OR_operator_c *symbol); |
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123 void *visit(XOR_operator_c *symbol); |
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124 void *visit(ANDN_operator_c *symbol); |
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125 void *visit(ORN_operator_c *symbol); |
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126 void *visit(XORN_operator_c *symbol); |
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127 void *visit(ADD_operator_c *symbol); |
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128 void *visit(SUB_operator_c *symbol); |
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129 void *visit(MUL_operator_c *symbol); |
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130 void *visit(DIV_operator_c *symbol); |
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131 void *visit(MOD_operator_c *symbol); |
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132 void *visit(GT_operator_c *symbol); |
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133 void *visit(GE_operator_c *symbol); |
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134 void *visit(EQ_operator_c *symbol); |
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135 void *visit(LT_operator_c *symbol); |
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136 void *visit(LE_operator_c *symbol); |
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137 void *visit(NE_operator_c *symbol); |
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138 void *visit(CAL_operator_c *symbol); |
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139 void *visit(CALC_operator_c *symbol); |
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140 void *visit(CALCN_operator_c *symbol); |
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141 void *visit(RET_operator_c *symbol); |
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142 void *visit(RETC_operator_c *symbol); |
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143 void *visit(RETCN_operator_c *symbol); |
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144 void *visit(JMP_operator_c *symbol); |
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145 void *visit(JMPC_operator_c *symbol); |
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146 void *visit(JMPCN_operator_c *symbol); |
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147 */ |
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148 /* Symbol class handled together with function call checks */ |
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149 // void *visit(il_assign_operator_c *symbol, variable_name); |
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150 /* Symbol class handled together with function call checks */ |
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151 // void *visit(il_assign_operator_c *symbol, option, variable_name); |
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152 |
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153 }; // flow_control_analysis_c |
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154 |
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155 |
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156 |
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157 |
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158 |
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159 |
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160 |
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161 |