43 #include "../absyntax_utils/absyntax_utils.hh" |
43 #include "../absyntax_utils/absyntax_utils.hh" |
44 |
44 |
45 |
45 |
46 |
46 |
47 class constant_folding_c : public iterator_visitor_c { |
47 class constant_folding_c : public iterator_visitor_c { |
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48 private: |
48 search_varfb_instance_type_c *search_varfb_instance_type; |
49 search_varfb_instance_type_c *search_varfb_instance_type; |
49 search_base_type_c search_base_type; |
50 search_base_type_c search_base_type; |
50 int error_count; |
51 int error_count; |
51 bool warning_found; |
52 bool warning_found; |
52 int current_display_error_level; |
53 int current_display_error_level; |
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54 /* Pointer to the previous IL instruction, which contains the current cvalue of the data stored in the IL stack, i.e. the default variable, a.k.a. accumulator */ |
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55 symbol_c *prev_il_instruction; |
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56 /* the current IL operand being analyzed */ |
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57 symbol_c *il_operand; |
53 |
58 |
54 public: |
59 public: |
55 constant_folding_c(symbol_c *symbol = NULL); |
60 constant_folding_c(symbol_c *symbol = NULL); |
56 virtual ~constant_folding_c(void); |
61 virtual ~constant_folding_c(void); |
57 int get_error_count(); |
62 int get_error_count(); |
58 |
63 |
59 private: |
64 private: |
60 /*********************/ |
65 /*********************/ |
61 /* B 1.2 - Constants */ |
66 /* B 1.2 - Constants */ |
62 /*********************/ |
67 /*********************/ |
63 /******************************/ |
68 /******************************/ |
64 /* B 1.2.1 - Numeric Literals */ |
69 /* B 1.2.1 - Numeric Literals */ |
75 void *visit(bit_string_literal_c *symbol); |
80 void *visit(bit_string_literal_c *symbol); |
76 void *visit(boolean_literal_c *symbol); |
81 void *visit(boolean_literal_c *symbol); |
77 void *visit(boolean_true_c *symbol); |
82 void *visit(boolean_true_c *symbol); |
78 void *visit(boolean_false_c *symbol); |
83 void *visit(boolean_false_c *symbol); |
79 |
84 |
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85 /****************************************/ |
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86 /* B.2 - Language IL (Instruction List) */ |
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87 /****************************************/ |
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88 /***********************************/ |
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89 /* B 2.1 Instructions and Operands */ |
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90 /***********************************/ |
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91 // void *visit(instruction_list_c *symbol); /* Not needed, since we inherit from iterator_visitor_c */ |
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92 void *visit(il_instruction_c *symbol); |
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93 void *visit(il_simple_operation_c *symbol); |
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94 //void *visit(il_function_call_c *symbol); /* TODO */ |
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95 void *visit(il_expression_c *symbol); |
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96 void *visit(il_jump_operation_c *symbol); |
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97 void *visit(il_fb_call_c *symbol); |
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98 //void *visit(il_formal_funct_call_c *symbol); /* TODO */ |
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99 //void *visit(il_operand_list_c *symbol); /* Not needed, since we inherit from iterator_visitor_c */ |
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100 void *visit(simple_instr_list_c *symbol); |
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101 void *visit(il_simple_instruction_c *symbol); |
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102 |
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103 |
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104 /*******************/ |
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105 /* B 2.2 Operators */ |
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106 /*******************/ |
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107 void *visit( LD_operator_c *symbol); |
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108 void *visit( LDN_operator_c *symbol); |
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109 void *visit( ST_operator_c *symbol); |
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110 void *visit( STN_operator_c *symbol); |
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111 void *visit( NOT_operator_c *symbol); |
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112 void *visit( S_operator_c *symbol); |
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113 void *visit( R_operator_c *symbol); |
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114 void *visit( S1_operator_c *symbol); |
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115 void *visit( R1_operator_c *symbol); |
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116 void *visit( CLK_operator_c *symbol); |
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117 void *visit( CU_operator_c *symbol); |
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118 void *visit( CD_operator_c *symbol); |
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119 void *visit( PV_operator_c *symbol); |
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120 void *visit( IN_operator_c *symbol); |
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121 void *visit( PT_operator_c *symbol); |
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122 void *visit( AND_operator_c *symbol); |
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123 void *visit( OR_operator_c *symbol); |
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124 void *visit( XOR_operator_c *symbol); |
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125 void *visit( ANDN_operator_c *symbol); |
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126 void *visit( ORN_operator_c *symbol); |
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127 void *visit( XORN_operator_c *symbol); |
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128 void *visit( ADD_operator_c *symbol); |
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129 void *visit( SUB_operator_c *symbol); |
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130 void *visit( MUL_operator_c *symbol); |
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131 void *visit( DIV_operator_c *symbol); |
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132 void *visit( MOD_operator_c *symbol); |
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133 void *visit( GT_operator_c *symbol); |
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134 void *visit( GE_operator_c *symbol); |
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135 void *visit( EQ_operator_c *symbol); |
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136 void *visit( LT_operator_c *symbol); |
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137 void *visit( LE_operator_c *symbol); |
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138 void *visit( NE_operator_c *symbol); |
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139 void *visit( CAL_operator_c *symbol); |
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140 void *visit( CALC_operator_c *symbol); |
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141 void *visit(CALCN_operator_c *symbol); |
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142 void *visit( RET_operator_c *symbol); |
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143 void *visit( RETC_operator_c *symbol); |
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144 void *visit(RETCN_operator_c *symbol); |
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145 void *visit( JMP_operator_c *symbol); |
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146 void *visit( JMPC_operator_c *symbol); |
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147 void *visit(JMPCN_operator_c *symbol); |
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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 |
80 /***************************************/ |
153 /***************************************/ |
81 /* B.3 - Language ST (Structured Text) */ |
154 /* B.3 - Language ST (Structured Text) */ |
82 /***************************************/ |
155 /***************************************/ |
83 /***********************/ |
156 /***********************/ |
84 /* B 3.1 - Expressions */ |
157 /* B 3.1 - Expressions */ |
85 /***********************/ |
158 /***********************/ |
86 void *visit(or_expression_c *symbol); |
159 void *visit( or_expression_c *symbol); |
87 void *visit(xor_expression_c *symbol); |
160 void *visit( xor_expression_c *symbol); |
88 void *visit(and_expression_c *symbol); |
161 void *visit( and_expression_c *symbol); |
89 void *visit(equ_expression_c *symbol); |
162 void *visit( equ_expression_c *symbol); |
90 void *visit(notequ_expression_c *symbol); |
163 void *visit(notequ_expression_c *symbol); |
91 void *visit(lt_expression_c *symbol); |
164 void *visit( lt_expression_c *symbol); |
92 void *visit(gt_expression_c *symbol); |
165 void *visit( gt_expression_c *symbol); |
93 void *visit(le_expression_c *symbol); |
166 void *visit( le_expression_c *symbol); |
94 void *visit(ge_expression_c *symbol); |
167 void *visit( ge_expression_c *symbol); |
95 void *visit(add_expression_c *symbol); |
168 void *visit( add_expression_c *symbol); |
96 void *visit(sub_expression_c *symbol); |
169 void *visit( sub_expression_c *symbol); |
97 void *visit(mul_expression_c *symbol); |
170 void *visit( mul_expression_c *symbol); |
98 void *visit(div_expression_c *symbol); |
171 void *visit( div_expression_c *symbol); |
99 void *visit(mod_expression_c *symbol); |
172 void *visit( mod_expression_c *symbol); |
100 void *visit(power_expression_c *symbol); |
173 void *visit( power_expression_c *symbol); |
101 void *visit(neg_expression_c *symbol); |
174 void *visit( neg_expression_c *symbol); |
102 void *visit(not_expression_c *symbol); |
175 void *visit( not_expression_c *symbol); |
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176 //void *visit(function_invocation_c *symbol); /* TODO */ |
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177 |
103 }; |
178 }; |
104 |
179 |