author | lbessard |
Tue, 19 May 2009 16:31:35 +0200 | |
changeset 176 | bef3cc16c064 |
parent 169 | bea932bc60b0 |
child 202 | da1a8186f86f |
permissions | -rwxr-xr-x |
70 | 1 |
/* |
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* (c) 2003 Mario de Sousa |
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* |
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* Offered to the public under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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* Public License for more details. |
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* |
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* This code is made available on the understanding that it will not be |
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* used in safety-critical situations without a full and competent review. |
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*/ |
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/* |
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* An IEC 61131-3 IL and ST compiler. |
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* |
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* Based on the |
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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* |
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*/ |
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/* |
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* Conversion of st statements (i.e. ST code). |
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* |
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* This is part of the 4th stage that generates |
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* a c++ source program equivalent to the IL and ST |
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* code. |
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*/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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class generate_c_st_c: public generate_c_typedecl_c { |
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private: |
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/* When calling a function block, we must first find it's type, |
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* by searching through the declarations of the variables currently |
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* in scope. |
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* This class does just that... |
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* A new class is instantiated whenever we begin generating the code |
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* for a function block type declaration, or a program declaration. |
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* This object instance will then later be called while the |
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* function block's or the program's body is being handled. |
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* |
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* Note that functions cannot contain calls to function blocks, |
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* so we do not create an object instance when handling |
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* a function declaration. |
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*/ |
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search_fb_instance_decl_c *search_fb_instance_decl; |
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/* When compiling st code, it becomes necessary to determine the |
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* data type of st expressions. To do this, we must first find the |
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* st operand's declaration, within the scope of the function block |
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* or function currently being processed. |
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* The following object does just that... |
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* This object instance will then later be called while the |
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* remaining st code is being handled. |
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*/ |
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search_expression_type_c *search_expression_type; |
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69 |
search_varfb_instance_type_c *search_varfb_instance_type; |
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98 | 71 |
search_base_type_c search_base_type; |
72 |
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symbol_c* current_array_type; |
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145 | 75 |
bool current_param_is_pointer; |
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70 | 77 |
public: |
78 |
generate_c_st_c(stage4out_c *s4o_ptr, symbol_c *scope, const char *variable_prefix = NULL) |
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: generate_c_typedecl_c(s4o_ptr) { |
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search_fb_instance_decl = new search_fb_instance_decl_c(scope); |
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search_expression_type = new search_expression_type_c(scope); |
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search_varfb_instance_type = new search_varfb_instance_type_c(scope); |
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this->set_variable_prefix(variable_prefix); |
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98 | 84 |
current_array_type = NULL; |
145 | 85 |
current_param_is_pointer = false; |
70 | 86 |
} |
87 |
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88 |
virtual ~generate_c_st_c(void) { |
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delete search_fb_instance_decl; |
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delete search_expression_type; |
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delete search_varfb_instance_type; |
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} |
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94 |
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private: |
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/* Some function calls in the body of functions or function blocks |
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* may leave some parameters to their default values, and |
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* ignore some output parameters of the function being called. |
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* Our conversion of ST functions to C++ does not contemplate that, |
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* i.e. each called function must get all it's input and output |
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* parameters set correctly. |
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* For input parameters we merely need to call the function with |
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* the apropriate default value, but for output parameters |
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* we must create temporary variables to hold the output value. |
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* |
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* We declare all the temporary output variables at the begining of |
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* the body of each function or function block, and use them as |
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* in function calls later on as they become necessary... |
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* Note that we cannot create these variables just before a function |
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* call, as the function call itself may be integrated within an |
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* expression, or another function call! |
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* |
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* The variables are declared in the exact same order in which they |
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* will be used later on during the function calls, which allows us |
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* to simply re-create the name that was used for the temporary variable |
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* instead of keeping it in some list. |
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* The names are recreated by the temp_var_name_factory, after reset() |
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* has been called! |
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* |
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* This function will genertae code similar to... |
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* |
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* INT __TMP_0 = 23; |
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* REAL __TMP_1 = 45.5; |
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* ... |
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*/ |
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temp_var_name_c temp_var_name_factory; |
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127 |
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128 |
public: |
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129 |
void generate(statement_list_c *stl) { |
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130 |
generate_c_tempvardecl_c generate_c_tempvardecl(&s4o); |
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generate_c_tempvardecl.generate(stl, &temp_var_name_factory); |
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stl->accept(*this); |
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} |
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135 |
private: |
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136 |
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146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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changeset
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void *visit(eno_param_c *symbol) { |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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if (this->is_variable_prefix_null()) { |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
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s4o.print("*"); |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
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} |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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else { |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
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this->print_variable_prefix(); |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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} |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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s4o.print("ENO"); |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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return NULL; |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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} |
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
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70 | 148 |
/*********************/ |
149 |
/* B 1.4 - Variables */ |
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150 |
/*********************/ |
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151 |
void *visit(symbolic_variable_c *symbol) { |
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unsigned int vartype = search_varfb_instance_type->get_vartype(symbol); |
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145 | 153 |
if (!current_param_is_pointer && (vartype == search_var_instance_decl_c::external_vt || vartype == search_var_instance_decl_c::located_vt)) { |
70 | 154 |
s4o.print("*("); |
155 |
generate_c_base_c::visit(symbol); |
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156 |
s4o.print(")"); |
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157 |
} |
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145 | 158 |
else if (current_param_is_pointer && vartype != search_var_instance_decl_c::external_vt && vartype != search_var_instance_decl_c::located_vt) { |
159 |
s4o.print("&("); |
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160 |
generate_c_base_c::visit(symbol); |
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161 |
s4o.print(")"); |
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162 |
} |
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else { |
164 |
generate_c_base_c::visit(symbol); |
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} |
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166 |
return NULL; |
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167 |
} |
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168 |
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169 |
/********************************************/ |
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170 |
/* B.1.4.1 Directly Represented Variables */ |
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171 |
/********************************************/ |
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172 |
// direct_variable: direct_variable_token {$$ = new direct_variable_c($1);}; |
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173 |
void *visit(direct_variable_c *symbol) { |
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174 |
TRACE("direct_variable_c"); |
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175 |
/* Do not use print_token() as it will change everything into uppercase */ |
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176 |
if (strlen(symbol->value) == 0) ERROR; |
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145 | 177 |
if (!current_param_is_pointer) { |
178 |
s4o.print("*("); |
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179 |
} |
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70 | 180 |
this->print_variable_prefix(); |
181 |
s4o.printlocation(symbol->value + 1); |
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145 | 182 |
if (!current_param_is_pointer) { |
183 |
s4o.print(")"); |
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184 |
} |
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70 | 185 |
return NULL; |
186 |
} |
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187 |
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98 | 188 |
/*************************************/ |
189 |
/* B.1.4.2 Multi-element Variables */ |
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190 |
/*************************************/ |
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191 |
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192 |
/* subscripted_variable '[' subscript_list ']' */ |
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193 |
//SYM_REF2(array_variable_c, subscripted_variable, subscript_list) |
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194 |
void *visit(array_variable_c *symbol) { |
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195 |
current_array_type = search_varfb_instance_type->get_type(symbol->subscripted_variable, false); |
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196 |
symbol->subscripted_variable->accept(*this); |
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197 |
if (current_array_type != NULL) { |
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198 |
symbol->subscript_list->accept(*this); |
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current_array_type = NULL; |
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200 |
} |
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201 |
return NULL; |
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} |
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203 |
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204 |
/* subscript_list ',' subscript */ |
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205 |
void *visit(subscript_list_c *symbol) { |
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206 |
for (int i = 0; i < symbol->n; i++) { |
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207 |
s4o.print("[__"); |
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208 |
current_array_type->accept(*this); |
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209 |
s4o.print("_TRANSIDX"); |
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210 |
print_integer(i); |
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211 |
s4o.print("("); |
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212 |
symbol->elements[i]->accept(*this); |
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213 |
s4o.print(")]"); |
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214 |
} |
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215 |
return NULL; |
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216 |
} |
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217 |
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218 |
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70 | 219 |
/***************************************/ |
220 |
/* B.3 - Language ST (Structured Text) */ |
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221 |
/***************************************/ |
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222 |
/***********************/ |
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223 |
/* B 3.1 - Expressions */ |
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224 |
/***********************/ |
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225 |
void *visit(or_expression_c *symbol) { |
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226 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
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227 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
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228 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
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229 |
ERROR; |
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230 |
if (search_expression_type->is_bool_type(left_type)) |
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231 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " || "); |
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232 |
if (search_expression_type->is_binary_type(left_type)) |
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233 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " | "); |
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234 |
ERROR; |
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235 |
return NULL; |
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236 |
} |
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237 |
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238 |
void *visit(xor_expression_c *symbol) { |
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239 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
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240 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
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241 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
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242 |
ERROR; |
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243 |
if (search_expression_type->is_bool_type(left_type)) { |
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244 |
s4o.print("("); |
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245 |
symbol->l_exp->accept(*this); |
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246 |
s4o.print(" && !"); |
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247 |
symbol->r_exp->accept(*this); |
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248 |
s4o.print(") || (!"); |
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249 |
symbol->l_exp->accept(*this); |
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250 |
s4o.print(" && "); |
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251 |
symbol->r_exp->accept(*this); |
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252 |
s4o.print(")"); |
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130 | 253 |
return NULL; |
70 | 254 |
} |
255 |
if (search_expression_type->is_binary_type(left_type)) |
|
256 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " ^ "); |
|
257 |
ERROR; |
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258 |
return NULL; |
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259 |
} |
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260 |
||
261 |
void *visit(and_expression_c *symbol) { |
|
262 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
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263 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
264 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
265 |
ERROR; |
|
266 |
if (search_expression_type->is_bool_type(left_type)) |
|
267 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " && "); |
|
268 |
if (search_expression_type->is_binary_type(left_type)) |
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269 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " & "); |
|
270 |
ERROR; |
|
271 |
return NULL; |
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272 |
} |
|
273 |
||
274 |
void *visit(equ_expression_c *symbol) { |
|
275 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
276 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
277 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
278 |
ERROR; |
|
123 | 279 |
if (search_expression_type->is_time_type(left_type) || |
280 |
search_expression_type->is_string_type(left_type)) |
|
70 | 281 |
return print_compare_function("__eq_", left_type, symbol->l_exp, symbol->r_exp); |
282 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " == "); |
|
283 |
} |
|
284 |
||
285 |
void *visit(notequ_expression_c *symbol) { |
|
286 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
287 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
288 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
289 |
ERROR; |
|
123 | 290 |
if (search_expression_type->is_time_type(left_type) || |
291 |
search_expression_type->is_string_type(left_type)) |
|
70 | 292 |
return print_compare_function("__ne_", left_type, symbol->l_exp, symbol->r_exp); |
293 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " != "); |
|
294 |
} |
|
295 |
||
296 |
void *visit(lt_expression_c *symbol) { |
|
297 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
298 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
299 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
300 |
ERROR; |
|
123 | 301 |
if (search_expression_type->is_time_type(left_type) || |
302 |
search_expression_type->is_string_type(left_type)) |
|
70 | 303 |
return print_compare_function("__lt_", left_type, symbol->l_exp, symbol->r_exp); |
123 | 304 |
if (!search_base_type.type_is_enumerated(left_type)) |
305 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " < "); |
|
306 |
ERROR; |
|
307 |
return NULL; |
|
70 | 308 |
} |
309 |
||
310 |
void *visit(gt_expression_c *symbol) { |
|
311 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
312 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
313 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
314 |
ERROR; |
|
123 | 315 |
if (search_expression_type->is_time_type(left_type) || |
316 |
search_expression_type->is_string_type(left_type)) |
|
70 | 317 |
return print_compare_function("__gt_", left_type, symbol->l_exp, symbol->r_exp); |
123 | 318 |
if (!search_base_type.type_is_enumerated(left_type)) |
319 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " > "); |
|
320 |
ERROR; |
|
321 |
return NULL; |
|
70 | 322 |
} |
323 |
||
324 |
void *visit(le_expression_c *symbol) { |
|
325 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
326 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
327 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
328 |
ERROR; |
|
123 | 329 |
if (search_expression_type->is_time_type(left_type) || |
330 |
search_expression_type->is_string_type(left_type)) |
|
70 | 331 |
return print_compare_function("__le_", left_type, symbol->l_exp, symbol->r_exp); |
123 | 332 |
if (!search_base_type.type_is_enumerated(left_type)) |
333 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " <= "); |
|
334 |
ERROR; |
|
335 |
return NULL; |
|
70 | 336 |
} |
337 |
||
338 |
void *visit(ge_expression_c *symbol) { |
|
339 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
340 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
341 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
342 |
ERROR; |
|
123 | 343 |
if (search_expression_type->is_time_type(left_type) || |
344 |
search_expression_type->is_string_type(left_type)) |
|
70 | 345 |
return print_compare_function("__ge_", left_type, symbol->l_exp, symbol->r_exp); |
123 | 346 |
if (!search_base_type.type_is_enumerated(left_type)) |
347 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " >= "); |
|
348 |
ERROR; |
|
349 |
return NULL; |
|
70 | 350 |
} |
351 |
||
352 |
void *visit(add_expression_c *symbol) { |
|
353 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
354 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
355 |
if ((typeid(*left_type) == typeid(time_type_name_c) && typeid(*right_type) == typeid(time_type_name_c)) || |
|
356 |
(typeid(*left_type) == typeid(tod_type_name_c) && typeid(*right_type) == typeid(time_type_name_c)) || |
|
357 |
(typeid(*left_type) == typeid(dt_type_name_c) && typeid(*right_type) == typeid(time_type_name_c))) |
|
149 | 358 |
return print_binary_function("__TIME_ADD", symbol->l_exp, symbol->r_exp); |
70 | 359 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
360 |
ERROR; |
|
361 |
if (search_expression_type->is_integer_type(left_type) || search_expression_type->is_real_type(left_type)) |
|
362 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " + "); |
|
363 |
ERROR; |
|
364 |
return NULL; |
|
365 |
} |
|
366 |
||
367 |
void *visit(sub_expression_c *symbol) { |
|
368 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
369 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
370 |
if ((typeid(*left_type) == typeid(time_type_name_c) && typeid(*right_type) == typeid(time_type_name_c)) || |
|
371 |
(typeid(*left_type) == typeid(date_type_name_c) && typeid(*right_type) == typeid(date_type_name_c)) || |
|
372 |
(typeid(*left_type) == typeid(tod_type_name_c) && typeid(*right_type) == typeid(time_type_name_c)) || |
|
373 |
(typeid(*left_type) == typeid(tod_type_name_c) && typeid(*right_type) == typeid(tod_type_name_c)) || |
|
374 |
(typeid(*left_type) == typeid(dt_type_name_c) && typeid(*right_type) == typeid(time_type_name_c)) || |
|
375 |
(typeid(*left_type) == typeid(dt_type_name_c) && typeid(*right_type) == typeid(dt_type_name_c))) |
|
149 | 376 |
return print_binary_function("__TIME_SUB", symbol->l_exp, symbol->r_exp); |
70 | 377 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
378 |
ERROR; |
|
379 |
if (search_expression_type->is_integer_type(left_type) || search_expression_type->is_real_type(left_type)) |
|
380 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " - "); |
|
381 |
ERROR; |
|
382 |
return NULL; |
|
383 |
} |
|
384 |
||
385 |
void *visit(mul_expression_c *symbol) { |
|
386 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
387 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
388 |
if ((typeid(*left_type) == typeid(time_type_name_c) && search_expression_type->is_integer_type(right_type)) || |
|
389 |
(typeid(*left_type) == typeid(time_type_name_c) && search_expression_type->is_real_type(right_type))) |
|
149 | 390 |
return print_binary_function("__TIME_MUL", symbol->l_exp, symbol->r_exp); |
70 | 391 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
392 |
ERROR; |
|
393 |
if (search_expression_type->is_integer_type(left_type) || search_expression_type->is_real_type(left_type)) |
|
394 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " * "); |
|
395 |
ERROR; |
|
396 |
return NULL; |
|
397 |
} |
|
398 |
||
399 |
void *visit(div_expression_c *symbol) { |
|
400 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
401 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
149 | 402 |
if ((typeid(*left_type) == typeid(time_type_name_c) && search_expression_type->is_integer_type(right_type)) || |
403 |
(typeid(*left_type) == typeid(time_type_name_c) && search_expression_type->is_real_type(right_type))) |
|
404 |
return print_binary_function("__TIME_DIV", symbol->l_exp, symbol->r_exp); |
|
70 | 405 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
406 |
ERROR; |
|
407 |
if (search_expression_type->is_integer_type(left_type) || search_expression_type->is_real_type(left_type)) |
|
408 |
return print_binary_expression(symbol->l_exp, symbol->r_exp, " / "); |
|
409 |
ERROR; |
|
410 |
return NULL; |
|
411 |
} |
|
412 |
||
413 |
void *visit(mod_expression_c *symbol) { |
|
414 |
symbol_c *left_type = search_expression_type->get_type(symbol->l_exp); |
|
415 |
symbol_c *right_type = search_expression_type->get_type(symbol->r_exp); |
|
416 |
if (!search_expression_type->is_same_type(left_type, right_type)) |
|
417 |
ERROR; |
|
418 |
if (search_expression_type->is_integer_type(left_type) || search_expression_type->is_real_type(left_type)) { |
|
419 |
s4o.print("(("); |
|
420 |
symbol->r_exp->accept(*this); |
|
421 |
s4o.print(" == 0)?0:"); |
|
422 |
print_binary_expression(symbol->l_exp, symbol->r_exp, " % "); |
|
423 |
s4o.print(")"); |
|
424 |
return NULL; |
|
425 |
} |
|
426 |
ERROR; |
|
427 |
return NULL; |
|
428 |
} |
|
429 |
||
430 |
/* TODO: power expression... */ |
|
431 |
void *visit(power_expression_c *symbol) {ERROR; return print_binary_expression(symbol->l_exp, symbol->r_exp, " ** ");} |
|
123 | 432 |
void *visit(neg_expression_c *symbol) { |
433 |
symbol_c *exp_type = search_expression_type->get_type(symbol->exp); |
|
434 |
if (search_expression_type->is_integer_type(exp_type) || search_expression_type->is_real_type(exp_type)) |
|
435 |
return print_unary_expression(symbol->exp, " -"); |
|
436 |
ERROR; |
|
437 |
return NULL; |
|
438 |
} |
|
70 | 439 |
|
440 |
void *visit(not_expression_c *symbol) { |
|
441 |
symbol_c *exp_type = search_expression_type->get_type(symbol->exp); |
|
123 | 442 |
if (search_expression_type->is_binary_type(exp_type)) |
443 |
return print_unary_expression(symbol->exp, search_expression_type->is_bool_type(exp_type)?"!":"~"); |
|
444 |
ERROR; |
|
445 |
return NULL; |
|
70 | 446 |
} |
447 |
||
448 |
void *visit(function_invocation_c *symbol) { |
|
449 |
function_declaration_c *f_decl = function_symtable.find_value(symbol->function_name); |
|
450 |
||
149 | 451 |
symbol_c* function_type_prefix = NULL; |
452 |
symbol_c* function_name = NULL; |
|
453 |
symbol_c* function_type_suffix = NULL; |
|
454 |
std::list<FUNCTION_PARAM> param_list; |
|
455 |
FUNCTION_PARAM *param; |
|
456 |
||
70 | 457 |
if (f_decl == function_symtable.end_value()) { |
458 |
/* The function called is not in the symtable, so we test if it is a |
|
459 |
* standard function defined in standard */ |
|
460 |
||
461 |
function_type_t current_function_type = get_function_type((identifier_c *)symbol->function_name); |
|
462 |
if (current_function_type == function_none) ERROR; |
|
463 |
||
464 |
symbol_c *function_return_type = search_expression_type->get_type(symbol); |
|
465 |
||
466 |
function_call_param_iterator_c function_call_param_iterator(symbol); |
|
167
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
467 |
|
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
468 |
int nb_param = ((list_c *)symbol->parameter_assignment_list)->n; |
70 | 469 |
|
149 | 470 |
identifier_c en_param_name("EN"); |
471 |
/* Get the value from EN param */ |
|
472 |
symbol_c *EN_param_value = function_call_param_iterator.search(&en_param_name); |
|
473 |
if (EN_param_value == NULL) |
|
474 |
EN_param_value = (symbol_c*)(new boolean_literal_c((symbol_c*)(new bool_type_name_c()), new boolean_true_c())); |
|
167
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
475 |
else |
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
476 |
nb_param --; |
149 | 477 |
ADD_PARAM_LIST(EN_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_in) |
478 |
||
162
60a124678842
Fixed typo in EN/ENO parameters handling for std library functions
etisserant
parents:
160
diff
changeset
|
479 |
identifier_c eno_param_name("ENO"); |
149 | 480 |
/* Get the value from ENO param */ |
481 |
symbol_c *ENO_param_value = function_call_param_iterator.search(&eno_param_name); |
|
167
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
482 |
if (ENO_param_value != NULL) |
ae423926bc84
Fixed parameter count error on variadic functions with EN/ENO
etisserant
parents:
162
diff
changeset
|
483 |
nb_param --; |
149 | 484 |
ADD_PARAM_LIST(ENO_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_out) |
169 | 485 |
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
486 |
#include "st_code_gen.c" |
169 | 487 |
|
70 | 488 |
} |
489 |
else { |
|
490 |
/* loop through each function parameter, find the value we should pass |
|
491 |
* to it, and then output the c equivalent... |
|
492 |
*/ |
|
493 |
function_param_iterator_c fp_iterator(f_decl); |
|
494 |
||
149 | 495 |
function_name = symbol->function_name; |
70 | 496 |
|
497 |
identifier_c *param_name; |
|
498 |
function_call_param_iterator_c function_call_param_iterator(symbol); |
|
499 |
for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) { |
|
149 | 500 |
|
70 | 501 |
function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction(); |
149 | 502 |
|
70 | 503 |
/* Get the value from a foo(<param_name> = <param_value>) style call */ |
504 |
symbol_c *param_value = function_call_param_iterator.search(param_name); |
|
505 |
||
506 |
/* Get the value from a foo(<param_value>) style call */ |
|
507 |
if (param_value == NULL) |
|
508 |
param_value = function_call_param_iterator.next(); |
|
149 | 509 |
|
510 |
if (param_value == NULL && param_direction == function_param_iterator_c::direction_in) { |
|
511 |
/* No value given for parameter, so we must use the default... */ |
|
512 |
/* First check whether default value specified in function declaration...*/ |
|
513 |
param_value = fp_iterator.default_value(); |
|
514 |
} |
|
515 |
||
70 | 516 |
symbol_c *param_type = fp_iterator.param_type(); |
517 |
if (param_type == NULL) ERROR; |
|
149 | 518 |
|
519 |
ADD_PARAM_LIST(param_value, param_type, param_direction) |
|
70 | 520 |
} /* for(...) */ |
521 |
// symbol->parameter_assignment->accept(*this); |
|
149 | 522 |
} |
523 |
||
524 |
if (function_type_prefix != NULL) { |
|
525 |
s4o.print("("); |
|
526 |
function_type_prefix->accept(*this); |
|
70 | 527 |
s4o.print(")"); |
149 | 528 |
} |
529 |
if (function_name != NULL) |
|
530 |
function_name->accept(*this); |
|
531 |
if (function_type_suffix != NULL) |
|
532 |
function_type_suffix->accept(*this); |
|
533 |
s4o.print("("); |
|
534 |
s4o.indent_right(); |
|
535 |
||
536 |
std::list<FUNCTION_PARAM>::iterator pt; |
|
537 |
for(pt = param_list.begin(); pt != param_list.end(); pt++) { |
|
538 |
if (pt != param_list.begin()) |
|
539 |
s4o.print(",\n"+s4o.indent_spaces); |
|
540 |
symbol_c *param_value = pt->param_value; |
|
541 |
symbol_c *param_type = pt->param_type; |
|
542 |
||
543 |
switch (pt->param_direction) { |
|
544 |
case function_param_iterator_c::direction_in: |
|
545 |
if (param_value == NULL) { |
|
546 |
/* If not, get the default value of this variable's type */ |
|
547 |
param_value = (symbol_c *)param_type->accept(*type_initial_value_c::instance()); |
|
548 |
} |
|
549 |
if (param_value == NULL) ERROR; |
|
550 |
if (search_base_type.type_is_subrange(param_type)) { |
|
551 |
s4o.print("__CHECK_"); |
|
552 |
param_type->accept(*this); |
|
553 |
s4o.print("("); |
|
554 |
} |
|
555 |
param_value->accept(*this); |
|
556 |
if (search_base_type.type_is_subrange(param_type)) |
|
557 |
s4o.print(")"); |
|
558 |
break; |
|
559 |
case function_param_iterator_c::direction_out: |
|
560 |
case function_param_iterator_c::direction_inout: |
|
561 |
current_param_is_pointer = true; |
|
562 |
if (param_value == NULL) { |
|
563 |
s4o.print("NULL"); |
|
564 |
} else { |
|
565 |
param_value->accept(*this); |
|
566 |
} |
|
567 |
current_param_is_pointer = false; |
|
568 |
break; |
|
569 |
case function_param_iterator_c::direction_extref: |
|
570 |
/* TODO! */ |
|
571 |
ERROR; |
|
572 |
break; |
|
573 |
} /* switch */ |
|
574 |
} |
|
169 | 575 |
|
149 | 576 |
s4o.print(")"); |
577 |
s4o.indent_left(); |
|
70 | 578 |
|
579 |
return NULL; |
|
580 |
} |
|
581 |
||
582 |
/********************/ |
|
583 |
/* B 3.2 Statements */ |
|
584 |
/********************/ |
|
585 |
void *visit(statement_list_c *symbol) { |
|
586 |
return print_list(symbol, s4o.indent_spaces, ";\n" + s4o.indent_spaces, ";\n"); |
|
587 |
} |
|
588 |
||
589 |
/*********************************/ |
|
590 |
/* B 3.2.1 Assignment Statements */ |
|
591 |
/*********************************/ |
|
592 |
void *visit(assignment_statement_c *symbol) { |
|
98 | 593 |
symbol_c *left_type = search_varfb_instance_type->get_type(symbol->l_exp, false); |
594 |
||
70 | 595 |
symbol->l_exp->accept(*this); |
596 |
s4o.print(" = "); |
|
123 | 597 |
if (search_base_type.type_is_subrange(left_type)) { |
98 | 598 |
s4o.print("__CHECK_"); |
599 |
left_type->accept(*this); |
|
600 |
s4o.print("("); |
|
601 |
} |
|
70 | 602 |
symbol->r_exp->accept(*this); |
123 | 603 |
if (search_base_type.type_is_subrange(left_type)) |
98 | 604 |
s4o.print(")"); |
70 | 605 |
return NULL; |
606 |
} |
|
607 |
||
608 |
/*****************************************/ |
|
609 |
/* B 3.2.2 Subprogram Control Statements */ |
|
610 |
/*****************************************/ |
|
611 |
||
612 |
/* fb_name '(' [param_assignment_list] ')' */ |
|
613 |
/* param_assignment_list -> may be NULL ! */ |
|
614 |
//SYM_REF2(fb_invocation_c, fb_name, param_assignment_list) |
|
615 |
void *visit(fb_invocation_c *symbol) { |
|
616 |
TRACE("fb_invocation_c"); |
|
617 |
/* first figure out what is the name of the function block type of the function block being called... */ |
|
618 |
symbol_c *function_block_type_name = this->search_fb_instance_decl->get_type_name(symbol->fb_name); |
|
619 |
/* should never occur. The function block instance MUST have been declared... */ |
|
620 |
if (function_block_type_name == NULL) ERROR; |
|
621 |
||
622 |
/* Now find the declaration of the function block type being called... */ |
|
623 |
function_block_declaration_c *fb_decl = function_block_type_symtable.find_value(function_block_type_name); |
|
624 |
/* should never occur. The function block type being called MUST be in the symtable... */ |
|
625 |
if (fb_decl == function_block_type_symtable.end_value()) ERROR; |
|
626 |
||
627 |
/* loop through each function block parameter, find the value we should pass |
|
628 |
* to it, and then output the c equivalent... |
|
629 |
*/ |
|
630 |
function_param_iterator_c fp_iterator(fb_decl); |
|
631 |
identifier_c *param_name; |
|
632 |
function_call_param_iterator_c function_call_param_iterator(symbol); |
|
633 |
for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) { |
|
634 |
function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction(); |
|
160 | 635 |
|
162
60a124678842
Fixed typo in EN/ENO parameters handling for std library functions
etisserant
parents:
160
diff
changeset
|
636 |
/*fprintf(stderr, "param : %s\n", param_name->value);*/ |
160 | 637 |
|
70 | 638 |
/* Get the value from a foo(<param_name> = <param_value>) style call */ |
639 |
symbol_c *param_value = function_call_param_iterator.search(param_name); |
|
640 |
||
641 |
/* Get the value from a foo(<param_value>) style call */ |
|
642 |
if (param_value == NULL) |
|
643 |
param_value = function_call_param_iterator.next(); |
|
644 |
||
98 | 645 |
symbol_c *param_type = fp_iterator.param_type(); |
646 |
if (param_type == NULL) ERROR; |
|
647 |
||
70 | 648 |
/* now output the value assignment */ |
649 |
if (param_value != NULL) |
|
650 |
if ((param_direction == function_param_iterator_c::direction_in) || |
|
651 |
(param_direction == function_param_iterator_c::direction_inout)) { |
|
652 |
print_variable_prefix(); |
|
653 |
symbol->fb_name->accept(*this); |
|
654 |
s4o.print("."); |
|
655 |
param_name->accept(*this); |
|
656 |
s4o.print(" = "); |
|
123 | 657 |
if (search_base_type.type_is_subrange(param_type)) { |
98 | 658 |
s4o.print("__CHECK_"); |
659 |
param_type->accept(*this); |
|
660 |
s4o.print("("); |
|
661 |
} |
|
70 | 662 |
param_value->accept(*this); |
123 | 663 |
if (search_base_type.type_is_subrange(param_type)) |
98 | 664 |
s4o.print(")"); |
70 | 665 |
s4o.print(";\n" + s4o.indent_spaces); |
666 |
} |
|
667 |
} /* for(...) */ |
|
668 |
||
669 |
/* now call the function... */ |
|
670 |
function_block_type_name->accept(*this); |
|
671 |
s4o.print(FB_FUNCTION_SUFFIX); |
|
672 |
s4o.print("(&"); |
|
673 |
print_variable_prefix(); |
|
674 |
symbol->fb_name->accept(*this); |
|
675 |
s4o.print(")"); |
|
676 |
||
677 |
/* loop through each function parameter, find the variable to which |
|
678 |
* we should atribute the value of all output or inoutput parameters. |
|
679 |
*/ |
|
680 |
fp_iterator.reset(); |
|
681 |
function_call_param_iterator.reset(); |
|
682 |
for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) { |
|
683 |
function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction(); |
|
684 |
||
685 |
/* Get the value from a foo(<param_name> = <param_value>) style call */ |
|
686 |
symbol_c *param_value = function_call_param_iterator.search(param_name); |
|
687 |
||
688 |
/* Get the value from a foo(<param_value>) style call */ |
|
689 |
if (param_value == NULL) |
|
690 |
param_value = function_call_param_iterator.next(); |
|
691 |
||
692 |
/* now output the value assignment */ |
|
693 |
if (param_value != NULL) |
|
694 |
if ((param_direction == function_param_iterator_c::direction_out) || |
|
695 |
(param_direction == function_param_iterator_c::direction_inout)) { |
|
98 | 696 |
symbol_c *param_type = search_varfb_instance_type->get_type(param_value, false); |
697 |
||
70 | 698 |
s4o.print(";\n"+ s4o.indent_spaces); |
699 |
param_value->accept(*this); |
|
700 |
s4o.print(" = "); |
|
123 | 701 |
if (search_base_type.type_is_subrange(param_type)) { |
98 | 702 |
s4o.print("__CHECK_"); |
703 |
param_type->accept(*this); |
|
704 |
s4o.print("("); |
|
705 |
} |
|
70 | 706 |
print_variable_prefix(); |
707 |
symbol->fb_name->accept(*this); |
|
708 |
s4o.print("."); |
|
709 |
param_name->accept(*this); |
|
123 | 710 |
if (search_base_type.type_is_subrange(param_type)) |
98 | 711 |
s4o.print(")"); |
70 | 712 |
} |
713 |
} /* for(...) */ |
|
714 |
||
715 |
return NULL; |
|
716 |
} |
|
717 |
||
718 |
||
719 |
||
720 |
||
721 |
/* helper symbol for fb_invocation */ |
|
722 |
/* param_assignment_list ',' param_assignment */ |
|
723 |
void *visit(param_assignment_list_c *symbol) { |
|
724 |
TRACE("param_assignment_list_c"); |
|
725 |
/* this should never be called... */ |
|
726 |
ERROR; |
|
727 |
return NULL; |
|
728 |
// return print_list(symbol, "", ", "); |
|
729 |
} |
|
730 |
||
731 |
||
732 |
void *visit(input_variable_param_assignment_c *symbol) { |
|
733 |
TRACE("input_variable_param_assignment_c"); |
|
734 |
/* this should never be called... */ |
|
735 |
ERROR; |
|
736 |
return NULL; |
|
737 |
/* |
|
738 |
symbol->variable_name->accept(*this); |
|
739 |
s4o.print(" = "); |
|
740 |
symbol->expression->accept(*this); |
|
741 |
return NULL; |
|
742 |
*/ |
|
743 |
} |
|
744 |
||
745 |
void *visit(output_variable_param_assignment_c *symbol) { |
|
746 |
TRACE("output_variable_param_assignment_c"); |
|
747 |
/* this should never be called... */ |
|
748 |
ERROR; |
|
749 |
return NULL; |
|
750 |
/* |
|
751 |
s4o.print(s4o.indent_spaces); |
|
752 |
if (symbol->not_param != NULL) |
|
753 |
symbol->not_param->accept(*this); |
|
754 |
symbol->variable_name->accept(*this); |
|
755 |
s4o.print(" => "); |
|
756 |
symbol->variable->accept(*this); |
|
757 |
return NULL; |
|
758 |
*/ |
|
759 |
} |
|
760 |
||
761 |
// TODO: the NOT symbol in function (block) calls... |
|
762 |
void *visit(not_paramassign_c *symbol) { |
|
763 |
TRACE("not_paramassign_c"); |
|
764 |
/* this should never be called... */ |
|
765 |
ERROR; |
|
766 |
return NULL; |
|
767 |
/* |
|
768 |
s4o.print("NOT "); |
|
769 |
return NULL; |
|
770 |
*/ |
|
771 |
} |
|
772 |
||
773 |
||
774 |
/********************************/ |
|
775 |
/* B 3.2.3 Selection Statements */ |
|
776 |
/********************************/ |
|
777 |
void *visit(if_statement_c *symbol) { |
|
778 |
s4o.print("if ("); |
|
779 |
symbol->expression->accept(*this); |
|
780 |
s4o.print(") {\n"); |
|
781 |
s4o.indent_right(); |
|
782 |
symbol->statement_list->accept(*this); |
|
783 |
s4o.indent_left(); |
|
784 |
symbol->elseif_statement_list->accept(*this); |
|
785 |
||
786 |
if (symbol->else_statement_list != NULL) { |
|
787 |
s4o.print(s4o.indent_spaces); s4o.print("} else {\n"); |
|
788 |
s4o.indent_right(); |
|
789 |
symbol->else_statement_list->accept(*this); |
|
790 |
s4o.indent_left(); |
|
791 |
} |
|
792 |
s4o.print(s4o.indent_spaces); s4o.print("}"); |
|
793 |
return NULL; |
|
794 |
} |
|
795 |
||
796 |
/* helper symbol for if_statement */ |
|
797 |
void *visit(elseif_statement_list_c *symbol) {return print_list(symbol);} |
|
798 |
||
799 |
/* helper symbol for elseif_statement_list */ |
|
800 |
void *visit(elseif_statement_c *symbol) { |
|
801 |
s4o.print(s4o.indent_spaces); s4o.print("} else if ("); |
|
802 |
symbol->expression->accept(*this); |
|
803 |
s4o.print(") {\n"); |
|
804 |
s4o.indent_right(); |
|
805 |
symbol->statement_list->accept(*this); |
|
806 |
s4o.indent_left(); |
|
807 |
return NULL; |
|
808 |
} |
|
809 |
||
810 |
void *visit(case_statement_c *symbol) { |
|
811 |
s4o.print("switch("); |
|
812 |
symbol->expression->accept(*this); |
|
813 |
s4o.print(") {\n"); |
|
814 |
s4o.indent_right(); |
|
815 |
symbol->case_element_list->accept(*this); |
|
816 |
if (symbol->statement_list != NULL) { |
|
817 |
s4o.print(s4o.indent_spaces + "default:\n"); |
|
818 |
s4o.indent_right(); |
|
819 |
symbol->statement_list->accept(*this); |
|
820 |
s4o.print(s4o.indent_spaces + "break;\n"); |
|
821 |
s4o.indent_left(); |
|
822 |
} |
|
823 |
s4o.indent_left(); |
|
824 |
s4o.print(s4o.indent_spaces + "}"); |
|
825 |
return NULL; |
|
826 |
} |
|
827 |
||
828 |
/* helper symbol for case_statement */ |
|
829 |
void *visit(case_element_list_c *symbol) {return print_list(symbol);} |
|
830 |
||
831 |
void *visit(case_element_c *symbol) { |
|
832 |
s4o.print(s4o.indent_spaces + "case "); |
|
833 |
symbol->case_list->accept(*this); |
|
834 |
s4o.print(" :\n"); |
|
835 |
s4o.indent_right(); |
|
836 |
symbol->statement_list->accept(*this); |
|
837 |
s4o.print(s4o.indent_spaces + "break;\n"); |
|
838 |
s4o.indent_left(); |
|
839 |
return NULL; |
|
840 |
} |
|
841 |
||
842 |
void *visit(case_list_c *symbol) {return print_list(symbol, "", ", ");} |
|
843 |
||
844 |
/********************************/ |
|
845 |
/* B 3.2.4 Iteration Statements */ |
|
846 |
/********************************/ |
|
847 |
void *visit(for_statement_c *symbol) { |
|
848 |
s4o.print("for("); |
|
849 |
symbol->control_variable->accept(*this); |
|
850 |
s4o.print(" = "); |
|
851 |
symbol->beg_expression->accept(*this); |
|
852 |
s4o.print("; "); |
|
853 |
symbol->control_variable->accept(*this); |
|
854 |
s4o.print(" != "); |
|
855 |
symbol->end_expression->accept(*this); |
|
856 |
s4o.print("; "); |
|
857 |
symbol->control_variable->accept(*this); |
|
858 |
if (symbol->by_expression != NULL) { |
|
859 |
s4o.print(" += "); |
|
860 |
symbol->by_expression->accept(*this); |
|
861 |
} else { |
|
862 |
s4o.print("++"); |
|
863 |
} |
|
864 |
s4o.print(") {\n"); |
|
865 |
s4o.indent_right(); |
|
866 |
symbol->statement_list->accept(*this); |
|
867 |
s4o.indent_left(); |
|
868 |
s4o.print(s4o.indent_spaces); s4o.print("}"); |
|
869 |
return NULL; |
|
870 |
} |
|
871 |
void *visit(while_statement_c *symbol) { |
|
872 |
s4o.print("while ("); |
|
873 |
symbol->expression->accept(*this); |
|
874 |
s4o.print(") {\n"); |
|
875 |
s4o.indent_right(); |
|
876 |
symbol->statement_list->accept(*this); |
|
877 |
s4o.indent_left(); |
|
878 |
s4o.print(s4o.indent_spaces); s4o.print("}"); |
|
879 |
return NULL; |
|
880 |
} |
|
881 |
void *visit(repeat_statement_c *symbol) { |
|
882 |
s4o.print("do {\n"); |
|
883 |
s4o.indent_right(); |
|
884 |
symbol->statement_list->accept(*this); |
|
885 |
s4o.indent_left(); |
|
886 |
s4o.print(s4o.indent_spaces); s4o.print("} while("); |
|
887 |
symbol->expression->accept(*this); |
|
888 |
s4o.print(")"); |
|
889 |
return NULL; |
|
890 |
} |
|
891 |
void *visit(exit_statement_c *symbol) { |
|
892 |
s4o.print("exit(0)"); |
|
893 |
return NULL; |
|
894 |
} |
|
895 |
||
896 |
||
897 |
||
898 |
}; /* generate_c_st_c */ |
|
899 |
||
900 |
||
901 |
||
902 |
||
903 |
||
904 |
||
905 |
||
906 |
||
907 |