laurent@219: /*
Edouard@279: * matiec - a compiler for the programming languages defined in IEC 61131-3
laurent@219: *
Edouard@279: * Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt)
Edouard@279: * Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
laurent@219: *
Edouard@279: * This program is free software: you can redistribute it and/or modify
Edouard@279: * it under the terms of the GNU General Public License as published by
Edouard@279: * the Free Software Foundation, either version 3 of the License, or
Edouard@279: * (at your option) any later version.
Edouard@279: *
Edouard@279: * This program is distributed in the hope that it will be useful,
Edouard@279: * but WITHOUT ANY WARRANTY; without even the implied warranty of
Edouard@279: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Edouard@279: * GNU General Public License for more details.
Edouard@279: *
Edouard@279: * You should have received a copy of the GNU General Public License
Edouard@279: * along with this program. If not, see .
Edouard@279: *
laurent@219: *
laurent@219: * This code is made available on the understanding that it will not be
laurent@219: * used in safety-critical situations without a full and competent review.
laurent@219: */
laurent@219:
laurent@219:
laurent@219: #define INLINE_RESULT_TEMP_VAR "__res"
laurent@219:
laurent@234: class generate_c_inlinefcall_c: public generate_c_typedecl_c {
laurent@219:
laurent@221: public:
laurent@221: typedef enum {
laurent@221: expression_vg,
berem@228: assignment_vg,
berem@228: complextype_base_vg,
berem@228: complextype_suffix_vg
laurent@221: } variablegeneration_t;
laurent@221:
laurent@219: private:
laurent@219:
laurent@219: /* The name of the IL default variable... */
laurent@219: #define IL_DEFVAR VAR_LEADER "IL_DEFVAR"
laurent@219: /* The name of the variable used to pass the result of a
laurent@219: * parenthesised instruction list to the immediately preceding
laurent@219: * scope ...
laurent@219: */
laurent@219: il_default_variable_c default_variable_name;
laurent@219:
berem@228: symbol_c* current_array_type;
berem@228:
laurent@219: int fcall_number;
laurent@219: symbol_c *fbname;
laurent@219:
laurent@219: search_expression_type_c *search_expression_type;
laurent@219:
laurent@219: search_varfb_instance_type_c *search_varfb_instance_type;
laurent@219:
laurent@219: search_base_type_c search_base_type;
laurent@219:
laurent@221: variablegeneration_t wanted_variablegeneration;
laurent@221:
laurent@219: public:
laurent@234: generate_c_inlinefcall_c(stage4out_c *s4o_ptr, symbol_c *name, symbol_c *scope, const char *variable_prefix = NULL)
laurent@219: : generate_c_typedecl_c(s4o_ptr),
laurent@219: default_variable_name(IL_DEFVAR, NULL)
laurent@219: {
laurent@219: search_expression_type = new search_expression_type_c(scope);
laurent@219: search_varfb_instance_type = new search_varfb_instance_type_c(scope);
laurent@219: this->set_variable_prefix(variable_prefix);
laurent@219: fcall_number = 0;
laurent@219: fbname = name;
laurent@221: wanted_variablegeneration = expression_vg;
laurent@219: }
laurent@219:
laurent@234: virtual ~generate_c_inlinefcall_c(void) {
laurent@234: delete search_expression_type;
laurent@219: delete search_varfb_instance_type;
laurent@219: }
laurent@219:
laurent@234: void print(symbol_c* symbol) {
laurent@234: function_call_iterator_c fc_iterator(symbol);
laurent@234: symbol_c* function_call;
laurent@234: while ((function_call = fc_iterator.next()) != NULL) {
laurent@234: function_call->accept(*this);
laurent@234: }
laurent@234: }
laurent@234:
laurent@234: void generate_inline(symbol_c *function_name,
laurent@235: symbol_c *function_type_prefix,
laurent@235: symbol_c *function_type_suffix,
laurent@234: std::list param_list) {
laurent@234: std::list::iterator pt;
laurent@219:
laurent@219: fcall_number++;
laurent@336: function_type_prefix = search_expression_type->default_literal_type(function_type_prefix);
laurent@336: if (function_type_suffix) {
laurent@336: function_type_suffix = search_expression_type->default_literal_type(function_type_suffix);
laurent@332: }
laurent@219:
laurent@219: s4o.print(s4o.indent_spaces);
laurent@219: s4o.print("inline ");
laurent@235: function_type_prefix->accept(*this);
laurent@219: s4o.print(" __");
laurent@219: fbname->accept(*this);
laurent@219: s4o.print("_");
laurent@219: function_name->accept(*this);
laurent@336: if (function_type_suffix) {
laurent@336: function_type_suffix->accept(*this);
laurent@336: }
laurent@219: s4o.print_integer(fcall_number);
laurent@219: s4o.print("(");
laurent@219: s4o.indent_right();
laurent@219:
laurent@219: PARAM_LIST_ITERATOR() {
laurent@219: if (PARAM_DIRECTION == function_param_iterator_c::direction_in) {
laurent@336: search_expression_type->default_literal_type(PARAM_TYPE)->accept(*this);
laurent@219: s4o.print(" ");
laurent@219: PARAM_NAME->accept(*this);
laurent@219: s4o.print(",\n" + s4o.indent_spaces);
laurent@219: }
laurent@219: }
laurent@219: fbname->accept(*this);
laurent@219: s4o.print(" *");
laurent@219: s4o.print(FB_FUNCTION_PARAM);
laurent@219: s4o.indent_left();
laurent@219: s4o.print(")\n" + s4o.indent_spaces);
laurent@219: s4o.print("{\n");
laurent@219: s4o.indent_right();
laurent@219:
laurent@219: s4o.print(s4o.indent_spaces);
laurent@235: function_type_prefix->accept(*this);
laurent@219: s4o.print(" "),
laurent@219: s4o.print(INLINE_RESULT_TEMP_VAR);
laurent@219: s4o.print(";\n");
laurent@219:
laurent@219: PARAM_LIST_ITERATOR() {
laurent@219: if ((PARAM_DIRECTION == function_param_iterator_c::direction_out ||
laurent@219: PARAM_DIRECTION == function_param_iterator_c::direction_inout) &&
laurent@219: PARAM_VALUE != NULL) {
laurent@219: s4o.print(s4o.indent_spaces);
laurent@219: PARAM_TYPE->accept(*this);
laurent@219: s4o.print(" ");
laurent@219: s4o.print(TEMP_VAR);
laurent@219: PARAM_NAME->accept(*this);
laurent@219: s4o.print(" = ");
laurent@219: print_check_function(PARAM_TYPE, PARAM_VALUE);
laurent@219: s4o.print(";\n");
laurent@219: }
laurent@219: }
laurent@219:
laurent@219: s4o.print(s4o.indent_spaces + INLINE_RESULT_TEMP_VAR),
laurent@219: s4o.print(" = ");
laurent@219: function_name->accept(*this);
laurent@235: if (function_type_suffix)
laurent@235: function_type_suffix->accept(*this);
laurent@219: s4o.print("(");
laurent@219: s4o.indent_right();
laurent@219:
laurent@219: PARAM_LIST_ITERATOR() {
laurent@219: if (pt != param_list.begin())
laurent@219: s4o.print(",\n" + s4o.indent_spaces);
laurent@219: if (PARAM_DIRECTION == function_param_iterator_c::direction_in)
laurent@219: PARAM_NAME->accept(*this);
laurent@219: else if (PARAM_VALUE != NULL){
laurent@219: s4o.print("&");
laurent@219: s4o.print(TEMP_VAR);
laurent@219: PARAM_NAME->accept(*this);
laurent@219: }
laurent@219: else {
laurent@219: s4o.print("NULL");
laurent@219: }
laurent@219: }
laurent@219: s4o.print(");\n");
laurent@219: s4o.indent_left();
laurent@219:
laurent@219: PARAM_LIST_ITERATOR() {
laurent@219: if ((PARAM_DIRECTION == function_param_iterator_c::direction_out ||
laurent@219: PARAM_DIRECTION == function_param_iterator_c::direction_inout) &&
laurent@219: PARAM_VALUE != NULL) {
laurent@219:
laurent@219: s4o.print(s4o.indent_spaces);
berem@228: print_setter(PARAM_VALUE, PARAM_TYPE, PARAM_NAME);
berem@228: s4o.print(";\n");
laurent@219: }
laurent@219: }
laurent@219: s4o.print(s4o.indent_spaces + "return ");
laurent@219: s4o.print(INLINE_RESULT_TEMP_VAR);
laurent@219: s4o.print(";\n");
laurent@219:
laurent@219: s4o.indent_left();
laurent@219: s4o.print(s4o.indent_spaces + "}\n\n");
laurent@219: }
laurent@219:
laurent@219: private:
laurent@219:
berem@228: void *print_getter(symbol_c *symbol) {
berem@228: unsigned int vartype = search_varfb_instance_type->get_vartype(symbol);
berem@228: if (vartype == search_var_instance_decl_c::external_vt)
berem@228: s4o.print(GET_EXTERNAL);
berem@228: else if (vartype == search_var_instance_decl_c::located_vt)
berem@228: s4o.print(GET_LOCATED);
berem@228: else
berem@228: s4o.print(GET_VAR);
berem@228: s4o.print("(");
berem@228:
berem@228: wanted_variablegeneration = complextype_base_vg;
berem@228: symbol->accept(*this);
berem@228: if (search_varfb_instance_type->type_is_complex())
berem@228: s4o.print(",");
berem@228: wanted_variablegeneration = complextype_suffix_vg;
berem@228: symbol->accept(*this);
berem@228: s4o.print(")");
berem@228: wanted_variablegeneration = expression_vg;
berem@228: return NULL;
berem@228: }
berem@228:
berem@228: void *print_setter(symbol_c* symbol,
berem@228: symbol_c* type,
berem@228: symbol_c* value) {
berem@228: unsigned int vartype = search_varfb_instance_type->get_vartype(symbol);
laurent@231: if (vartype == search_var_instance_decl_c::external_vt) {
laurent@231: symbolic_variable_c *variable = dynamic_cast(symbol);
laurent@231: /* TODO Find a solution for forcing global complex variables */
laurent@231: if (variable != NULL) {
laurent@231: s4o.print(SET_EXTERNAL);
laurent@231: s4o.print("(");
laurent@231: variable->var_name->accept(*this);
laurent@231: s4o.print(",");
laurent@231: }
laurent@231: else {
laurent@231: s4o.print(SET_COMPLEX_EXTERNAL);
laurent@231: s4o.print("(");
laurent@231: }
laurent@231: }
laurent@231: else {
laurent@231: if (vartype == search_var_instance_decl_c::located_vt)
laurent@231: s4o.print(SET_LOCATED);
laurent@231: else
laurent@231: s4o.print(SET_VAR);
laurent@231: s4o.print("(");
laurent@231: }
berem@228:
berem@228: wanted_variablegeneration = complextype_base_vg;
berem@228: symbol->accept(*this);
berem@228: s4o.print(",");
berem@228: wanted_variablegeneration = expression_vg;
berem@228: print_check_function(type, value, NULL, true);
berem@228: if (search_varfb_instance_type->type_is_complex()) {
berem@228: s4o.print(",");
berem@228: wanted_variablegeneration = complextype_suffix_vg;
berem@228: symbol->accept(*this);
berem@228: }
berem@228: s4o.print(")");
berem@228: wanted_variablegeneration = expression_vg;
berem@228: return NULL;
berem@228: }
berem@228:
laurent@219: /*********************/
laurent@219: /* B 1.4 - Variables */
laurent@219: /*********************/
laurent@219: void *visit(symbolic_variable_c *symbol) {
berem@228: unsigned int vartype;
berem@228: if (wanted_variablegeneration == complextype_base_vg)
berem@228: generate_c_base_c::visit(symbol);
berem@228: else if (wanted_variablegeneration == complextype_suffix_vg)
berem@228: return NULL;
laurent@221: else
laurent@235: print_getter(symbol);
laurent@219: return NULL;
laurent@219: }
laurent@219:
laurent@219: /********************************************/
laurent@219: /* B.1.4.1 Directly Represented Variables */
laurent@219: /********************************************/
laurent@219: // direct_variable: direct_variable_token {$$ = new direct_variable_c($1);};
laurent@219: void *visit(direct_variable_c *symbol) {
laurent@219: TRACE("direct_variable_c");
laurent@219: /* Do not use print_token() as it will change everything into uppercase */
laurent@219: if (strlen(symbol->value) == 0) ERROR;
laurent@219: s4o.print(GET_LOCATED);
laurent@219: s4o.print("(");
laurent@219: this->print_variable_prefix();
laurent@219: s4o.printlocation(symbol->value + 1);
laurent@219: s4o.print(")");
laurent@219: return NULL;
laurent@219: }
laurent@219:
berem@228: /*************************************/
berem@228: /* B.1.4.2 Multi-element Variables */
berem@228: /*************************************/
berem@228:
berem@228: // SYM_REF2(structured_variable_c, record_variable, field_selector)
berem@228: void *visit(structured_variable_c *symbol) {
berem@228: TRACE("structured_variable_c");
berem@228: switch (wanted_variablegeneration) {
berem@228: case complextype_base_vg:
berem@228: symbol->record_variable->accept(*this);
berem@228: break;
berem@228: case complextype_suffix_vg:
berem@228: symbol->record_variable->accept(*this);
berem@228: s4o.print(".");
berem@228: symbol->field_selector->accept(*this);
berem@228: break;
berem@228: default:
laurent@237: print_getter(symbol);
berem@228: break;
berem@228: }
berem@228: return NULL;
berem@228: }
berem@228:
berem@228: /* subscripted_variable '[' subscript_list ']' */
berem@228: //SYM_REF2(array_variable_c, subscripted_variable, subscript_list)
berem@228: void *visit(array_variable_c *symbol) {
berem@228: switch (wanted_variablegeneration) {
berem@228: case complextype_base_vg:
berem@228: symbol->subscripted_variable->accept(*this);
berem@228: break;
berem@228: case complextype_suffix_vg:
laurent@238: symbol->subscripted_variable->accept(*this);
laurent@238:
msousa@321: current_array_type = search_varfb_instance_type->get_type_id(symbol->subscripted_variable);
laurent@238: if (current_array_type == NULL) ERROR;
laurent@238:
laurent@238: s4o.print(".table");
laurent@238: symbol->subscript_list->accept(*this);
laurent@238:
laurent@238: current_array_type = NULL;
berem@228: break;
berem@228: default:
laurent@237: print_getter(symbol);
berem@228: break;
berem@228: }
berem@228: return NULL;
berem@228: }
berem@228:
laurent@219: /****************************************/
laurent@219: /* B.2 - Language IL (Instruction List) */
laurent@219: /****************************************/
laurent@219:
laurent@219: /***********************************/
laurent@219: /* B 2.1 Instructions and Operands */
laurent@219: /***********************************/
laurent@219:
laurent@219: void *visit(il_function_call_c *symbol) {
laurent@235: symbol_c* function_type_prefix = NULL;
laurent@235: symbol_c* function_name = NULL;
laurent@235: symbol_c* function_type_suffix = NULL;
laurent@235: DECLARE_PARAM_LIST()
laurent@235:
laurent@235: symbol_c *param_data_type = default_variable_name.current_type;
laurent@235:
laurent@235: function_call_param_iterator_c function_call_param_iterator(symbol);
laurent@235:
laurent@235: function_declaration_c *f_decl = function_symtable.find_value(symbol->function_name);
laurent@235: if (f_decl == function_symtable.end_value()) {
laurent@235: function_type_t current_function_type = get_function_type((identifier_c *)symbol->function_name);
laurent@235: if (current_function_type == function_none) ERROR;
laurent@235:
laurent@235: function_type_prefix = (symbol_c *)search_expression_type->compute_standard_function_il(symbol, param_data_type);
laurent@235:
laurent@235: symbol_c *en_param_name = (symbol_c *)(new identifier_c("EN"));
laurent@235: /* Add the value from EN param */
laurent@235: ADD_PARAM_LIST(en_param_name,
laurent@235: (symbol_c*)(new boolean_literal_c((symbol_c*)(new bool_type_name_c()), new boolean_true_c())),
laurent@235: (symbol_c*)(new bool_type_name_c()),
laurent@235: function_param_iterator_c::direction_in)
laurent@235:
laurent@235: symbol_c *eno_param_name = (symbol_c *)(new identifier_c("ENO"));
laurent@235: /* Add the value from ENO param */
laurent@235: ADD_PARAM_LIST(eno_param_name, NULL, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_out)
laurent@235:
laurent@235: int nb_param = 1;
laurent@235: if (symbol->il_operand_list != NULL)
laurent@235: nb_param += ((list_c *)symbol->il_operand_list)->n;
laurent@235:
laurent@235: #include "il_code_gen.c"
laurent@235:
laurent@235: }
laurent@235: else {
laurent@235: function_name = symbol->function_name;
laurent@219:
laurent@219: /* determine the base data type returned by the function being called... */
laurent@219: search_base_type_c search_base_type;
laurent@235: function_type_prefix = (symbol_c *)f_decl->type_name->accept(search_base_type);
laurent@219:
laurent@219: /* loop through each function parameter, find the value we should pass
laurent@219: * to it, and then output the c equivalent...
laurent@219: */
laurent@219:
laurent@219: function_param_iterator_c fp_iterator(f_decl);
laurent@219: identifier_c *param_name;
laurent@219: for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) {
laurent@219: symbol_c *param_type = fp_iterator.param_type();
laurent@219: if (param_type == NULL) ERROR;
laurent@219:
laurent@219: function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction();
laurent@219:
laurent@219: symbol_c *param_value = NULL;
laurent@219:
laurent@219: /* if it is the first parameter, semantics specifies that we should
laurent@219: * get the value off the IL default variable!
laurent@219: */
laurent@233: if (1 == i)
laurent@233: param_value = &this->default_variable_name;
laurent@219:
laurent@219: /* Get the value from a foo( = ) style call */
laurent@219: /* NOTE: the following line of code is not required in this case, but it doesn't
laurent@219: * harm to leave it in, as in the case of a non-formal syntax function call,
laurent@219: * it will always return NULL.
laurent@219: * We leave it in in case we later decide to merge this part of the code together
laurent@219: * with the function calling code in generate_c_st_c, which does require
laurent@219: * the following line...
laurent@219: */
laurent@219: if (param_value == NULL)
laurent@219: param_value = function_call_param_iterator.search_f(param_name);
laurent@219:
laurent@219: /* Get the value from a foo() style call */
laurent@233: if (param_value == NULL) {
laurent@233: param_value = function_call_param_iterator.next_nf();
laurent@233: if (param_value != NULL && fp_iterator.is_en_eno_param_implicit()) ERROR;
laurent@233: }
laurent@219:
laurent@219: if (param_value == NULL && param_direction == function_param_iterator_c::direction_in) {
laurent@219: /* No value given for parameter, so we must use the default... */
laurent@219: /* First check whether default value specified in function declaration...*/
laurent@219: param_value = fp_iterator.default_value();
laurent@219: }
laurent@219:
laurent@219: ADD_PARAM_LIST(param_name, param_value, param_type, fp_iterator.param_direction())
laurent@219: } /* for(...) */
laurent@219: }
laurent@235:
laurent@235: if (function_call_param_iterator.next_nf() != NULL) ERROR;
laurent@235: if (NULL == function_type_prefix) ERROR;
laurent@235:
laurent@235: bool has_output_params = false;
laurent@235:
laurent@235: PARAM_LIST_ITERATOR() {
laurent@235: if ((PARAM_DIRECTION == function_param_iterator_c::direction_out ||
laurent@235: PARAM_DIRECTION == function_param_iterator_c::direction_inout) &&
laurent@235: PARAM_VALUE != NULL) {
laurent@235: has_output_params = true;
laurent@235: }
laurent@235: }
laurent@235:
laurent@235: if (has_output_params)
laurent@235: generate_inline(function_name, function_type_prefix, function_type_suffix, param_list);
laurent@235:
laurent@235: CLEAR_PARAM_LIST()
laurent@235:
laurent@235: return NULL;
laurent@235: }
laurent@235:
laurent@235: /* | function_name '(' eol_list [il_param_list] ')' */
laurent@235: // SYM_REF2(il_formal_funct_call_c, function_name, il_param_list)
laurent@219: void *visit(il_formal_funct_call_c *symbol) {
laurent@235: symbol_c* function_type_prefix = NULL;
laurent@235: symbol_c* function_name = NULL;
laurent@235: symbol_c* function_type_suffix = NULL;
laurent@235: DECLARE_PARAM_LIST()
laurent@235:
laurent@235: function_call_param_iterator_c function_call_param_iterator(symbol);
laurent@235:
laurent@235: function_declaration_c *f_decl = function_symtable.find_value(symbol->function_name);
laurent@235: if (f_decl == function_symtable.end_value()) {
laurent@235: function_type_t current_function_type = get_function_type((identifier_c *)symbol->function_name);
laurent@235: if (current_function_type == function_none) ERROR;
laurent@235:
laurent@235: function_type_prefix = (symbol_c *)search_expression_type->compute_standard_function_default(NULL, symbol);
laurent@235:
laurent@235: int nb_param = 0;
laurent@235: if (symbol->il_param_list != NULL)
laurent@235: nb_param += ((list_c *)symbol->il_param_list)->n;
laurent@235:
laurent@235: symbol_c *en_param_name = (symbol_c *)(new identifier_c("EN"));
laurent@235: /* Get the value from EN param */
laurent@235: symbol_c *EN_param_value = function_call_param_iterator.search_f(en_param_name);
laurent@235: if (EN_param_value == NULL)
laurent@235: EN_param_value = (symbol_c*)(new boolean_literal_c((symbol_c*)(new bool_type_name_c()), new boolean_true_c()));
laurent@235: else
laurent@235: nb_param --;
laurent@235: ADD_PARAM_LIST(en_param_name, EN_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_in)
laurent@235:
laurent@235: symbol_c *eno_param_name = (symbol_c *)(new identifier_c("ENO"));
laurent@235: /* Get the value from ENO param */
laurent@235: symbol_c *ENO_param_value = function_call_param_iterator.search_f(eno_param_name);
laurent@235: if (ENO_param_value != NULL)
laurent@235: nb_param --;
laurent@235: ADD_PARAM_LIST(eno_param_name, ENO_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_out)
laurent@235:
laurent@235: #include "st_code_gen.c"
laurent@235:
laurent@235: }
laurent@235: else {
laurent@235: function_name = symbol->function_name;
laurent@219:
laurent@219: /* determine the base data type returned by the function being called... */
laurent@219: search_base_type_c search_base_type;
laurent@235: function_type_prefix = (symbol_c *)f_decl->type_name->accept(search_base_type);
laurent@219:
laurent@219: /* loop through each function parameter, find the value we should pass
laurent@219: * to it, and then output the c equivalent...
laurent@219: */
laurent@219:
laurent@219: function_param_iterator_c fp_iterator(f_decl);
laurent@219: identifier_c *param_name;
laurent@219: for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) {
laurent@219: symbol_c *param_type = fp_iterator.param_type();
laurent@219: if (param_type == NULL) ERROR;
laurent@219:
laurent@219: function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction();
laurent@219:
laurent@219:
laurent@219: symbol_c *param_value = NULL;
laurent@219:
laurent@219: /* Get the value from a foo( = ) style call */
laurent@219: if (param_value == NULL)
laurent@219: param_value = function_call_param_iterator.search_f(param_name);
laurent@219:
laurent@219: /* Get the value from a foo() style call */
laurent@219: /* NOTE: the following line of code is not required in this case, but it doesn't
laurent@219: * harm to leave it in, as in the case of a formal syntax function call,
laurent@219: * it will always return NULL.
laurent@219: * We leave it in in case we later decide to merge this part of the code together
laurent@219: * with the function calling code in generate_c_st_c, which does require
laurent@219: * the following line...
laurent@219: */
laurent@233: if (param_value == NULL) {
laurent@233: param_value = function_call_param_iterator.next_nf();
laurent@233: if (param_value != NULL && fp_iterator.is_en_eno_param_implicit()) ERROR;
laurent@233: }
laurent@219:
laurent@219: if (param_value == NULL) {
laurent@219: /* No value given for parameter, so we must use the default... */
laurent@219: /* First check whether default value specified in function declaration...*/
laurent@219: param_value = fp_iterator.default_value();
laurent@219: }
laurent@219:
laurent@219: ADD_PARAM_LIST(param_name, param_value, param_type, fp_iterator.param_direction())
laurent@219: }
laurent@235: }
laurent@235:
laurent@235: if (function_call_param_iterator.next_nf() != NULL) ERROR;
laurent@235: if (NULL == function_type_prefix) ERROR;
laurent@235:
laurent@235: bool has_output_params = false;
laurent@235:
laurent@235: PARAM_LIST_ITERATOR() {
laurent@235: if ((PARAM_DIRECTION == function_param_iterator_c::direction_out ||
laurent@235: PARAM_DIRECTION == function_param_iterator_c::direction_inout) &&
laurent@235: PARAM_VALUE != NULL) {
laurent@235: has_output_params = true;
laurent@219: }
laurent@235: }
laurent@235:
laurent@235: if (has_output_params)
laurent@235: generate_inline(function_name, function_type_prefix, function_type_suffix, param_list);
laurent@235:
laurent@235: CLEAR_PARAM_LIST()
laurent@235:
laurent@219: return NULL;
laurent@219: }
laurent@219:
laurent@219: /***************************************/
laurent@219: /* B.3 - Language ST (Structured Text) */
laurent@219: /***************************************/
laurent@219: /***********************/
laurent@219: /* B 3.1 - Expressions */
laurent@219: /***********************/
laurent@219:
laurent@219: void *visit(function_invocation_c *symbol) {
laurent@235: symbol_c* function_type_prefix = NULL;
laurent@235: symbol_c* function_name = NULL;
laurent@235: symbol_c* function_type_suffix = NULL;
laurent@235: DECLARE_PARAM_LIST()
laurent@235:
laurent@235: symbol_c *parameter_assignment_list = NULL;
laurent@235: if (NULL != symbol-> formal_param_list) parameter_assignment_list = symbol-> formal_param_list;
laurent@235: if (NULL != symbol->nonformal_param_list) parameter_assignment_list = symbol->nonformal_param_list;
laurent@235: if (NULL == parameter_assignment_list) ERROR;
laurent@235:
laurent@235: function_call_param_iterator_c function_call_param_iterator(symbol);
laurent@235:
laurent@219: function_declaration_c *f_decl = function_symtable.find_value(symbol->function_name);
laurent@235: if (f_decl == function_symtable.end_value()) {
laurent@235: /* The function called is not in the symtable, so we test if it is a
laurent@235: * standard function defined in standard */
laurent@235:
laurent@235: function_type_t current_function_type = get_function_type((identifier_c *)symbol->function_name);
laurent@235: if (current_function_type == function_none) ERROR;
laurent@235:
laurent@235: function_type_prefix = search_expression_type->get_type(symbol);
laurent@235:
laurent@235: int nb_param = ((list_c *)parameter_assignment_list)->n;
laurent@235:
laurent@235: symbol_c *en_param_name = (symbol_c *)(new identifier_c("EN"));
laurent@235: /* Get the value from EN param */
laurent@235: symbol_c *EN_param_value = function_call_param_iterator.search_f(en_param_name);
laurent@235: if (EN_param_value == NULL)
laurent@235: EN_param_value = (symbol_c*)(new boolean_literal_c((symbol_c*)(new bool_type_name_c()), new boolean_true_c()));
laurent@235: else
laurent@235: nb_param --;
laurent@235: ADD_PARAM_LIST(en_param_name, EN_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_in)
laurent@235:
laurent@235: symbol_c *eno_param_name = (symbol_c *)(new identifier_c("ENO"));
laurent@235: /* Get the value from ENO param */
laurent@235: symbol_c *ENO_param_value = function_call_param_iterator.search_f(eno_param_name);
laurent@235: if (ENO_param_value != NULL)
laurent@235: nb_param --;
laurent@235: ADD_PARAM_LIST(eno_param_name, ENO_param_value, (symbol_c*)(new bool_type_name_c()), function_param_iterator_c::direction_out)
laurent@235:
laurent@235: #include "st_code_gen.c"
laurent@235:
laurent@235: }
laurent@235: else {
laurent@235: function_name = symbol->function_name;
laurent@219:
laurent@219: /* determine the base data type returned by the function being called... */
laurent@219: search_base_type_c search_base_type;
laurent@235: function_type_prefix = (symbol_c *)f_decl->type_name->accept(search_base_type);
laurent@219:
laurent@219: /* loop through each function parameter, find the value we should pass
laurent@219: * to it, and then output the c equivalent...
laurent@219: */
laurent@219: function_param_iterator_c fp_iterator(f_decl);
laurent@219: identifier_c *param_name;
laurent@219: for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) {
laurent@233: symbol_c *param_type = fp_iterator.param_type();
laurent@233: if (param_type == NULL) ERROR;
laurent@219:
laurent@219: function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction();
laurent@219:
laurent@219: /* Get the value from a foo( = ) style call */
laurent@219: symbol_c *param_value = function_call_param_iterator.search_f(param_name);
laurent@219:
laurent@219: /* Get the value from a foo() style call */
laurent@233: if (param_value == NULL) {
laurent@219: param_value = function_call_param_iterator.next_nf();
laurent@233: if (param_value != NULL && fp_iterator.is_en_eno_param_implicit()) ERROR;
laurent@233: }
laurent@219:
laurent@219: if (param_value == NULL && param_direction == function_param_iterator_c::direction_in) {
laurent@219: /* No value given for parameter, so we must use the default... */
laurent@219: /* First check whether default value specified in function declaration...*/
laurent@219: param_value = fp_iterator.default_value();
laurent@219: }
laurent@219:
laurent@219: ADD_PARAM_LIST(param_name, param_value, param_type, param_direction)
laurent@219: } /* for(...) */
laurent@219: // symbol->parameter_assignment->accept(*this);
laurent@235: }
laurent@235:
laurent@235: if (function_call_param_iterator.next_nf() != NULL) ERROR;
laurent@235: if (NULL == function_type_prefix) ERROR;
laurent@235:
laurent@235: bool has_output_params = false;
laurent@235:
laurent@235: PARAM_LIST_ITERATOR() {
laurent@235: if ((PARAM_DIRECTION == function_param_iterator_c::direction_out ||
laurent@235: PARAM_DIRECTION == function_param_iterator_c::direction_inout) &&
laurent@235: PARAM_VALUE != NULL) {
laurent@235: has_output_params = true;
laurent@219: }
laurent@235: }
laurent@235:
laurent@235: if (has_output_params)
laurent@235: generate_inline(function_name, function_type_prefix, function_type_suffix, param_list);
laurent@235:
laurent@235: CLEAR_PARAM_LIST()
laurent@235:
laurent@219: return NULL;
laurent@219: }
laurent@219:
laurent@234: }; /* generate_c_inlinefcall_c */
laurent@234:
laurent@234: