| author | lbessard |
| Fri, 19 Dec 2008 15:09:29 +0100 | |
| changeset 160 | 59d58f5e6caa |
| parent 152 | efc510145ab2 |
| child 164 | a0679c78143a |
| 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 variable declaration constructs. |
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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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//#include <stdio.h> /* required for NULL */ |
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//#include <string> |
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//#include <iostream> |
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//#include "../../util/symtable.hh" |
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class generate_c_array_initialization_c: public generate_c_typedecl_c {
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public: |
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typedef enum {
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none_am, |
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dimensioncount_am, |
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initializationvalue_am, |
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arrayassignment_am, |
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varlistparse_am |
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} arrayinitialization_mode_t; |
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arrayinitialization_mode_t current_mode; |
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| 160 | 59 |
symbol_c* array_base_type; |
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symbol_c* array_default_value; |
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symbol_c* array_default_initialization; |
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private: |
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| 160 | 64 |
int dimension_number; |
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int current_dimension; |
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int array_size; |
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int defined_values_count; |
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int current_initialization_count; |
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public: |
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generate_c_array_initialization_c(stage4out_c *s4o_ptr): generate_c_typedecl_c(s4o_ptr) {}
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~generate_c_array_initialization_c(void) {}
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| 160 | 74 |
void init_array_dimensions(symbol_c *array_specification) {
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dimension_number = 0; |
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current_dimension = 0; |
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array_size = 1; |
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defined_values_count = 0; |
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current_initialization_count = 0; |
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array_base_type = array_default_value = array_default_initialization = NULL; |
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current_mode = dimensioncount_am; |
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array_specification->accept(*this); |
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} |
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void init_array(symbol_c *var1_list, symbol_c *array_specification, symbol_c *array_initialization) {
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int i; |
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| 160 | 89 |
init_array_dimensions(array_specification); |
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current_mode = initializationvalue_am; |
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s4o.print("\n");
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s4o.print(s4o.indent_spaces + "{\n");
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s4o.indent_right(); |
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s4o.print(s4o.indent_spaces + "int index["); |
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print_integer(dimension_number); |
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s4o.print("];\n");
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s4o.print(s4o.indent_spaces); |
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array_specification->accept(*this); |
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s4o.print(" temp = ");
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init_array_values(array_initialization); |
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s4o.print(";\n");
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current_mode = arrayassignment_am; |
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array_specification->accept(*this); |
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current_mode = varlistparse_am; |
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var1_list->accept(*this); |
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current_mode = arrayassignment_am; |
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for (i = 0; i < dimension_number; i++) {
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s4o.indent_left(); |
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s4o.print(s4o.indent_spaces + "}\n"); |
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} |
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s4o.indent_left(); |
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s4o.print(s4o.indent_spaces + "}"); |
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} |
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void init_array_values(symbol_c *array_initialization) {
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s4o.print("{");
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array_initialization->accept(*this); |
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if (array_default_initialization != NULL && defined_values_count < array_size) |
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array_default_initialization->accept(*this); |
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if (defined_values_count < array_size) {
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for (int i = defined_values_count; i < array_size; i++) {
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if (defined_values_count > 0) |
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s4o.print(", ");
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array_default_value->accept(*this); |
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defined_values_count++; |
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} |
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} |
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s4o.print("}");
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} |
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void *visit(identifier_c *type_name) {
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symbol_c *type_decl; |
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switch (current_mode) {
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case dimensioncount_am: |
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case arrayassignment_am: |
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/* look up the type declaration... */ |
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type_decl = type_symtable.find_value(type_name); |
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if (type_decl == type_symtable.end_value()) |
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/* Type declaration not found!! */ |
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ERROR; |
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type_decl->accept(*this); |
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break; |
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default: |
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print_token(type_name); |
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break; |
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} |
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return NULL; |
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} |
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void *visit(var1_list_c *symbol) {
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int i, j; |
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for (i = 0; i < symbol->n; i++) {
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s4o.print(s4o.indent_spaces); |
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print_variable_prefix(); |
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symbol->elements[i]->accept(*this); |
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for (j = 0; j < dimension_number; j++) {
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s4o.print("[index[");
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print_integer(j); |
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s4o.print("]]");
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} |
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s4o.print(" = temp");
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for (j = 0; j < dimension_number; j++) {
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s4o.print("[index[");
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print_integer(j); |
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s4o.print("]]");
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} |
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s4o.print(";\n");
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} |
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return NULL; |
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} |
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/********************************/ |
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/* B 1.3.3 - Derived data types */ |
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/********************************/ |
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/* array_specification [ASSIGN array_initialization] */ |
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/* array_initialization may be NULL ! */ |
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void *visit(array_spec_init_c *symbol) {
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switch (current_mode) {
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case dimensioncount_am: |
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array_default_initialization = symbol->array_initialization; |
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break; |
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default: |
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break; |
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} |
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symbol->array_specification->accept(*this); |
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return NULL; |
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} |
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/* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */ |
196 |
void *visit(array_specification_c *symbol) {
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symbol->array_subrange_list->accept(*this); |
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switch (current_mode) {
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case dimensioncount_am: |
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array_base_type = symbol->non_generic_type_name; |
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array_default_value = (symbol_c *)symbol->non_generic_type_name->accept(*type_initial_value_c::instance());; |
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if (array_default_value == NULL) ERROR; |
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break; |
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default: |
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break; |
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} |
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return NULL; |
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} |
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/* signed_integer DOTDOT signed_integer */ |
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//SYM_REF2(subrange_c, lower_limit, upper_limit) |
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void *visit(subrange_c *symbol) {
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switch (current_mode) {
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case dimensioncount_am: |
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dimension_number++; |
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array_size *= extract_integer(symbol->upper_limit) - extract_integer(symbol->lower_limit) + 1; |
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break; |
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case arrayassignment_am: |
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s4o.print(s4o.indent_spaces + "for (index["); |
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print_integer(current_dimension); |
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s4o.print("] = 0; index[");
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print_integer(current_dimension); |
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s4o.print("] <= ");
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print_integer(extract_integer(symbol->upper_limit) - extract_integer(symbol->lower_limit)); |
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s4o.print("; index[");
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print_integer(current_dimension); |
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s4o.print("]++) {\n");
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s4o.indent_right(); |
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current_dimension++; |
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break; |
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default: |
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break; |
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} |
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return NULL; |
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} |
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/* helper symbol for array_initialization */ |
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/* array_initial_elements_list ',' array_initial_elements */ |
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void *visit(array_initial_elements_list_c *symbol) {
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switch (current_mode) {
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case initializationvalue_am: |
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current_initialization_count = 0; |
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for (int i = 0; i < symbol->n; i++) {
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if (current_initialization_count >= defined_values_count) {
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if (defined_values_count >= array_size) |
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ERROR; |
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if (defined_values_count > 0) |
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s4o.print(", ");
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symbol->elements[i]->accept(*this); |
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defined_values_count++; |
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} |
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else {
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array_initial_elements_c *array_initial_element = dynamic_cast<array_initial_elements_c *>(symbol->elements[i]); |
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if (array_initial_element != NULL) |
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symbol->elements[i]->accept(*this); |
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} |
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current_initialization_count++; |
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} |
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break; |
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default: |
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break; |
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} |
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return NULL; |
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} |
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/* integer '(' [array_initial_element] ')' */
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/* array_initial_element may be NULL ! */ |
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void *visit(array_initial_elements_c *symbol) {
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int initial_element_number; |
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switch (current_mode) {
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case initializationvalue_am: |
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initial_element_number = extract_integer(symbol->integer); |
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if (current_initialization_count < defined_values_count) {
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int temp_element_number = 0; |
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int diff = defined_values_count - current_initialization_count; |
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if (diff <= initial_element_number) |
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temp_element_number = initial_element_number - diff; |
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current_initialization_count += initial_element_number - 1; |
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initial_element_number = temp_element_number; |
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if (initial_element_number > 0) {
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defined_values_count++; |
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s4o.print(", ");
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} |
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} |
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else |
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current_initialization_count += initial_element_number - 1; |
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if (defined_values_count + initial_element_number > array_size) |
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ERROR; |
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| 98 | 291 |
for (int i = 0; i < initial_element_number; i++) {
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if (i > 0) |
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s4o.print(", ");
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if (symbol->array_initial_element != NULL) |
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symbol->array_initial_element->accept(*this); |
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| 160 | 296 |
else |
| 98 | 297 |
array_default_value->accept(*this); |
298 |
} |
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if (initial_element_number > 1) |
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| 160 | 300 |
defined_values_count += initial_element_number - 1; |
| 98 | 301 |
break; |
302 |
default: |
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break; |
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} |
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return NULL; |
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} |
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| 160 | 308 |
void *visit(structure_element_initialization_list_c *symbol); |
| 98 | 309 |
}; |
| 70 | 310 |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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/***********************************************************************/ |
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319 |
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| 160 | 320 |
/* given a structure_element_declaration_list_c, iterate |
321 |
* through each element, returning the name |
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* of each element...structure_element_iterator_c |
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*/ |
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class structure_element_iterator_c : public null_visitor_c {
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325 |
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private: |
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/* a pointer to the structure_element_declaration_list_c |
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* currently being analysed. |
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*/ |
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symbol_c *type_decl; |
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int next_element, element_count; |
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identifier_c *current_element_name; |
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symbol_c *current_element_type; |
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symbol_c *current_element_default_value; |
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335 |
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336 |
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public: |
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/* start off at the first parameter once again... */ |
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void reset(void) {
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next_element = element_count = 0; |
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current_element_name = NULL; |
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current_element_type = current_element_default_value = NULL; |
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} |
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344 |
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/* initialise the iterator object. |
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* We must be given a reference to the function declaration |
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* that will be analysed... |
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*/ |
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structure_element_iterator_c(symbol_c *type_decl) {
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this->type_decl = type_decl; |
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reset(); |
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352 |
} |
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353 |
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354 |
/* Skip to the next element. After object creation, |
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* the object references on |
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* element _before_ the first, so |
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357 |
* this function must be called once to get the object to |
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* reference the first element... |
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* |
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* Returns the element's name! |
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*/ |
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362 |
identifier_c *next(void) {
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void *res; |
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364 |
identifier_c *identifier; |
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365 |
element_count = 0; |
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366 |
next_element++; |
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367 |
res = type_decl->accept(*this); |
|
368 |
if (res != NULL) {
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369 |
symbol_c *sym = (symbol_c *)res; |
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370 |
identifier = dynamic_cast<identifier_c *>(sym); |
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371 |
if (identifier == NULL) |
|
372 |
ERROR; |
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373 |
} |
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374 |
else |
|
375 |
return NULL; |
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376 |
||
377 |
current_element_name = identifier; |
|
378 |
return current_element_name; |
|
379 |
} |
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380 |
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381 |
/* Returns the currently referenced element's default value, |
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* or NULL if none is specified in the structure declaration itself. |
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383 |
*/ |
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384 |
symbol_c *default_value(void) {
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385 |
return current_element_default_value; |
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386 |
} |
|
387 |
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388 |
/* Returns the currently referenced element's type name. */ |
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389 |
symbol_c *element_type(void) {
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390 |
return current_element_type; |
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391 |
} |
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392 |
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393 |
/********************************/ |
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394 |
/* B 1.3.3 - Derived data types */ |
|
395 |
/********************************/ |
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396 |
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397 |
/* helper symbol for structure_declaration */ |
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398 |
/* structure_element_declaration_list structure_element_declaration ';' */ |
|
399 |
void *visit(structure_element_declaration_list_c *symbol) {
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400 |
void *res; |
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401 |
for (int i = 0; i < symbol->n; i++) {
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402 |
res = symbol->elements[i]->accept(*this); |
|
403 |
if (res != NULL) |
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404 |
return res; |
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405 |
} |
|
406 |
return NULL; |
|
407 |
} |
|
408 |
||
409 |
/* structure_element_name ':' *_spec_init */ |
|
410 |
void *visit(structure_element_declaration_c *symbol) {
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|
411 |
element_count++; |
|
412 |
if (next_element == element_count) {
|
|
413 |
current_element_default_value = spec_init_sperator_c::get_init(symbol->spec_init); |
|
414 |
current_element_type = spec_init_sperator_c::get_spec(symbol->spec_init); |
|
415 |
return symbol->structure_element_name; |
|
416 |
} |
|
417 |
/* not yet the desired element... */ |
|
418 |
return NULL; |
|
419 |
} |
|
420 |
||
421 |
}; |
|
422 |
||
423 |
/* |
|
424 |
* Structure init element iterator. |
|
425 |
* It will search through the elements of a structure initialization |
|
426 |
*/ |
|
427 |
class structure_init_element_iterator_c : public null_visitor_c {
|
|
428 |
private: |
|
429 |
/* a pointer to the structure initialization |
|
430 |
* currently being analysed. |
|
431 |
*/ |
|
432 |
symbol_c *structure_initialization; |
|
433 |
identifier_c *search_element_name; |
|
434 |
||
435 |
public: |
|
436 |
/* initialise the iterator object. |
|
437 |
* We must be given a reference to the structure initialization |
|
438 |
* that will be analysed... |
|
439 |
*/ |
|
440 |
structure_init_element_iterator_c(symbol_c *structure_initialization) {
|
|
441 |
this->structure_initialization = structure_initialization; |
|
442 |
search_element_name = NULL; |
|
443 |
} |
|
444 |
||
445 |
/* Search for the value passed to the element named <element_name>... */ |
|
446 |
symbol_c *search(symbol_c *element_name) {
|
|
447 |
if (NULL == element_name) ERROR; |
|
448 |
search_element_name = dynamic_cast<identifier_c *>(element_name); |
|
449 |
if (NULL == search_element_name) ERROR; |
|
450 |
void *res = structure_initialization->accept(*this); |
|
451 |
return (symbol_c *)res; |
|
452 |
} |
|
453 |
||
454 |
/* helper symbol for structure_initialization */ |
|
455 |
/* structure_element_initialization_list ',' structure_element_initialization */ |
|
456 |
void *visit(structure_element_initialization_list_c *symbol) {
|
|
457 |
void *res; |
|
458 |
for (int i = 0; i < symbol->n; i++) {
|
|
459 |
res = symbol->elements[i]->accept(*this); |
|
460 |
if (res != NULL) |
|
461 |
return res; |
|
462 |
} |
|
463 |
return NULL; |
|
464 |
} |
|
465 |
||
466 |
/* structure_element_name ASSIGN value */ |
|
467 |
void *visit(structure_element_initialization_c *symbol) {
|
|
468 |
identifier_c *element_name = dynamic_cast<identifier_c *>(symbol->structure_element_name); |
|
469 |
||
470 |
if (element_name == NULL) ERROR; |
|
471 |
||
472 |
if (strcasecmp(search_element_name->value, element_name->value) == 0) |
|
473 |
/* FOUND! This is the same element!! */ |
|
474 |
return (void *)symbol->value; |
|
475 |
return NULL; |
|
476 |
} |
|
477 |
}; |
|
478 |
||
479 |
class generate_c_structure_initialization_c: public generate_c_typedecl_c {
|
|
480 |
||
481 |
public: |
|
482 |
typedef enum {
|
|
483 |
none_sm, |
|
484 |
typedecl_sm, |
|
485 |
initializationvalue_sm, |
|
486 |
varlistparse_sm |
|
487 |
} structureinitialization_mode_t; |
|
488 |
||
489 |
structureinitialization_mode_t current_mode; |
|
490 |
||
491 |
private: |
|
492 |
symbol_c* structure_type_decl; |
|
493 |
symbol_c* current_element_type; |
|
494 |
||
495 |
public: |
|
496 |
generate_c_structure_initialization_c(stage4out_c *s4o_ptr): generate_c_typedecl_c(s4o_ptr) {}
|
|
497 |
~generate_c_structure_initialization_c(void) {}
|
|
498 |
||
499 |
void init_structure_default(symbol_c *structure_type_name) {
|
|
500 |
structure_type_decl = NULL; |
|
501 |
current_element_type = NULL; |
|
502 |
||
503 |
current_mode = typedecl_sm; |
|
504 |
structure_type_name->accept(*this); |
|
505 |
} |
|
506 |
||
507 |
void init_structure(symbol_c *var1_list, symbol_c *structure_type_name, symbol_c *structure_initialization) {
|
|
508 |
int i; |
|
509 |
||
510 |
init_structure_default(structure_type_name); |
|
511 |
||
512 |
current_mode = initializationvalue_sm; |
|
513 |
s4o.print("\n");
|
|
514 |
s4o.print(s4o.indent_spaces + "{\n");
|
|
515 |
s4o.indent_right(); |
|
516 |
s4o.print(s4o.indent_spaces); |
|
517 |
structure_type_name->accept(*this); |
|
518 |
s4o.print(" temp = ");
|
|
519 |
structure_initialization->accept(*this); |
|
520 |
s4o.print(";\n");
|
|
521 |
||
522 |
current_mode = varlistparse_sm; |
|
523 |
var1_list->accept(*this); |
|
524 |
||
525 |
s4o.indent_left(); |
|
526 |
s4o.print(s4o.indent_spaces + "}"); |
|
527 |
} |
|
528 |
||
529 |
void *visit(identifier_c *type_name) {
|
|
530 |
symbol_c *type_decl; |
|
531 |
switch (current_mode) {
|
|
532 |
case typedecl_sm: |
|
533 |
/* look up the type declaration... */ |
|
534 |
type_decl = type_symtable.find_value(type_name); |
|
535 |
if (type_decl == type_symtable.end_value()) |
|
536 |
/* Type declaration not found!! */ |
|
537 |
ERROR; |
|
538 |
type_decl->accept(*this); |
|
539 |
break; |
|
540 |
default: |
|
541 |
print_token(type_name); |
|
542 |
break; |
|
543 |
} |
|
544 |
return NULL; |
|
545 |
} |
|
546 |
||
547 |
void *visit(var1_list_c *symbol) {
|
|
548 |
int i, j; |
|
549 |
||
550 |
for (i = 0; i < symbol->n; i++) {
|
|
551 |
s4o.print(s4o.indent_spaces); |
|
552 |
print_variable_prefix(); |
|
553 |
symbol->elements[i]->accept(*this); |
|
554 |
s4o.print(" = temp;\n");
|
|
555 |
} |
|
556 |
return NULL; |
|
557 |
} |
|
558 |
||
559 |
/********************************/ |
|
560 |
/* B 1.3.3 - Derived data types */ |
|
561 |
/********************************/ |
|
562 |
||
563 |
/* helper symbol for structure_declaration */ |
|
564 |
/* structure_element_declaration_list structure_element_declaration ';' */ |
|
565 |
void *visit(structure_element_declaration_list_c *symbol) {
|
|
566 |
switch (current_mode) {
|
|
567 |
case typedecl_sm: |
|
568 |
structure_type_decl = (symbol_c *)symbol; |
|
569 |
break; |
|
570 |
default: |
|
571 |
break; |
|
572 |
} |
|
573 |
return NULL; |
|
574 |
} |
|
575 |
||
576 |
/* helper symbol for structure_initialization */ |
|
577 |
/* structure_element_initialization_list ',' structure_element_initialization */ |
|
578 |
void *visit(structure_element_initialization_list_c *symbol) {
|
|
579 |
s4o.print("{");
|
|
580 |
structure_element_iterator_c structure_iterator(structure_type_decl); |
|
581 |
||
582 |
identifier_c *element_name; |
|
583 |
structure_init_element_iterator_c structure_init_element_iterator(symbol); |
|
584 |
for(int i = 1; (element_name = structure_iterator.next()) != NULL; i++) {
|
|
585 |
if (i > 1) |
|
586 |
s4o.print(", ");
|
|
587 |
||
588 |
/* Get the value from an initialization */ |
|
589 |
symbol_c *element_value = structure_init_element_iterator.search(element_name); |
|
590 |
||
591 |
if (element_value == NULL) {
|
|
592 |
/* No value given for parameter, so we must use the default... */ |
|
593 |
/* First check whether default value specified in function declaration...*/ |
|
594 |
element_value = structure_iterator.default_value(); |
|
595 |
current_element_type = structure_iterator.element_type(); |
|
596 |
} |
|
597 |
||
598 |
if (element_value == NULL) {
|
|
599 |
if (current_element_type == NULL) ERROR; |
|
600 |
||
601 |
/* If not, get the default value of this variable's type */ |
|
602 |
element_value = (symbol_c *)current_element_type->accept(*type_initial_value_c::instance()); |
|
603 |
} |
|
604 |
||
605 |
if (element_value == NULL) ERROR; |
|
606 |
||
607 |
element_value->accept(*this); |
|
608 |
} |
|
609 |
s4o.print("}");
|
|
610 |
return NULL; |
|
611 |
} |
|
612 |
||
613 |
/* helper symbol for array_initialization */ |
|
614 |
/* array_initial_elements_list ',' array_initial_elements */ |
|
615 |
void *visit(array_initial_elements_list_c *symbol) {
|
|
616 |
generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o); |
|
617 |
array_initialization->set_variable_prefix(get_variable_prefix()); |
|
618 |
array_initialization->init_array_dimensions(current_element_type); |
|
619 |
array_initialization->current_mode = generate_c_array_initialization_c::initializationvalue_am; |
|
620 |
array_initialization->init_array_values(symbol); |
|
621 |
delete array_initialization; |
|
622 |
return NULL; |
|
623 |
} |
|
624 |
||
625 |
}; |
|
626 |
||
627 |
||
628 |
/* helper symbol for array_initialization */ |
|
629 |
/* structure_element_initialization_list ',' structure_element_initialization */ |
|
630 |
void *generate_c_array_initialization_c::visit(structure_element_initialization_list_c *symbol) {
|
|
631 |
generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o); |
|
632 |
structure_initialization->set_variable_prefix(get_variable_prefix()); |
|
633 |
structure_initialization->init_structure_default(array_base_type); |
|
634 |
structure_initialization->current_mode = generate_c_structure_initialization_c::initializationvalue_sm; |
|
635 |
symbol->accept(*structure_initialization); |
|
636 |
delete structure_initialization; |
|
637 |
return NULL; |
|
638 |
} |
|
639 |
||
640 |
/***********************************************************************/ |
|
641 |
/***********************************************************************/ |
|
642 |
/***********************************************************************/ |
|
643 |
/***********************************************************************/ |
|
644 |
/***********************************************************************/ |
|
645 |
/***********************************************************************/ |
|
646 |
/***********************************************************************/ |
|
647 |
/***********************************************************************/ |
|
| 70 | 648 |
|
649 |
||
650 |
||
651 |
class generate_c_vardecl_c: protected generate_c_typedecl_c {
|
|
652 |
||
653 |
/* A Helper class to the main class... */ |
|
654 |
/* print a string, except the first time it is called */ |
|
655 |
/* used to print the separator "," before each variable |
|
656 |
* declaration, except the first... |
|
657 |
* |
|
658 |
* Needs to be done in a seperate class because this is called |
|
659 |
* from within various locations within the code. |
|
660 |
*/ |
|
661 |
class next_var_c {
|
|
662 |
private: |
|
663 |
bool print_flag; |
|
664 |
std::string str1, str2; |
|
665 |
||
666 |
next_var_c *embedded_scope; |
|
667 |
||
668 |
public: |
|
669 |
next_var_c(std::string s1, std::string s2) {
|
|
670 |
str1 = s1; |
|
671 |
str2 = s2; |
|
672 |
print_flag = false; |
|
673 |
embedded_scope = NULL; |
|
674 |
} |
|
675 |
||
676 |
std::string get(void) {
|
|
677 |
if (NULL != embedded_scope) |
|
678 |
return embedded_scope->get(); |
|
679 |
||
680 |
bool old_print_flag = print_flag; |
|
681 |
print_flag = true; |
|
682 |
if (!old_print_flag) |
|
683 |
return str1; |
|
684 |
else |
|
685 |
return str2; |
|
686 |
} |
|
687 |
||
688 |
/* Create a new next_var_c for an embedded scope. |
|
689 |
* From now on, every call to get() will return the |
|
690 |
* inner-most scope...! |
|
691 |
*/ |
|
692 |
void push(std::string s1, std::string s2) {
|
|
693 |
if (NULL != embedded_scope) |
|
694 |
return embedded_scope->push(s1, s2); |
|
695 |
||
696 |
embedded_scope = new next_var_c(s1, s2); |
|
697 |
if (NULL == embedded_scope) |
|
698 |
ERROR; |
|
699 |
return; |
|
700 |
} |
|
701 |
||
702 |
/* Remove the inner-most scope... */ |
|
703 |
void pop(void) {
|
|
704 |
if (NULL != embedded_scope) |
|
705 |
return embedded_scope->pop(); |
|
706 |
||
707 |
delete embedded_scope; |
|
708 |
embedded_scope = NULL; |
|
709 |
} |
|
710 |
}; |
|
711 |
||
712 |
private: |
|
713 |
/* used to generate the ',' separating the parameters in a function call */ |
|
714 |
next_var_c *nv; |
|
715 |
||
716 |
||
717 |
public: |
|
718 |
/* the types of variables that need to be processed... */ |
|
719 |
static const unsigned int none_vt = 0x0000; |
|
720 |
static const unsigned int input_vt = 0x0001; // VAR_INPUT |
|
721 |
static const unsigned int output_vt = 0x0002; // VAR_OUTPUT |
|
722 |
static const unsigned int inoutput_vt = 0x0004; // VAR_IN_OUT |
|
723 |
static const unsigned int private_vt = 0x0008; // VAR |
|
724 |
static const unsigned int temp_vt = 0x0010; // VAR_TEMP |
|
725 |
static const unsigned int external_vt = 0x0020; // VAR_EXTERNAL |
|
726 |
static const unsigned int global_vt = 0x0040; // VAR_GLOBAL |
|
727 |
// Globals declared inside a resource will not be declared |
|
728 |
// unless global_vt is acompanied by resource_vt |
|
729 |
static const unsigned int located_vt = 0x0080; // VAR <var_name> AT <location> |
|
730 |
static const unsigned int program_vt = 0x0100; // PROGRAM (inside a configuration!) |
|
731 |
// Programs declared inside a resource will not be declared |
|
732 |
// unless program_vt is acompanied by resource_vt |
|
733 |
||
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
734 |
static const unsigned int eneno_vt = 0x0200; // EN/ENO declaration |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
735 |
|
| 70 | 736 |
static const unsigned int resource_vt = 0x8000; // RESOURCE (inside a configuration!) |
737 |
// This, just of itself, will not print out any declarations!! |
|
738 |
// It must be acompanied by either program_vt and/or global_vt |
|
739 |
||
740 |
/* How variables should be declared: as local variables or |
|
741 |
* variables within a function call interface. |
|
742 |
* |
|
743 |
* This will define the format of the output generated |
|
744 |
* by this class. |
|
745 |
* |
|
746 |
* finterface_vf: function interface parameters |
|
747 |
* e.g. f( int a, long b, real c ); |
|
748 |
* --------------------- |
|
749 |
* This class/function will produce the |
|
750 |
* underlined code of the above examples, |
|
751 |
* and no more!! |
|
752 |
* |
|
753 |
* localinit_vf: local declaration. Will include variable |
|
754 |
* initialisation if it is not a located variable. |
|
755 |
* e.g. |
|
756 |
* int a = 9; |
|
757 |
* long b = 99; |
|
758 |
* real c = 99.9; |
|
759 |
* |
|
760 |
* local_vf: local declaration. Will NOT include variable |
|
761 |
* initialisation. |
|
762 |
* e.g. |
|
763 |
* int a; |
|
764 |
* long b; |
|
765 |
* real c; |
|
766 |
* |
|
767 |
* init_vf: local initialisation without declaration. |
|
768 |
* e.g. |
|
769 |
* a = 9; |
|
770 |
* b = 99; |
|
771 |
* c = 99.9; |
|
772 |
* |
|
773 |
* constructorinit_vf: initialising of member variables... |
|
774 |
* e.g. for a constructor... |
|
775 |
* class_name_c(void) |
|
776 |
* : a(9), b(99), c(99.9) { // code... }
|
|
777 |
* -------------------- |
|
778 |
* This class/function will produce the |
|
779 |
* underlined code of the above examples, |
|
780 |
* and no more!! |
|
781 |
* |
|
782 |
* globalinit_vf: initialising of static c++ variables. These |
|
783 |
* variables may have been declared as static inside |
|
784 |
* a class, in which case the scope within which they were |
|
785 |
* previously delcared must be passed as the second parameter |
|
786 |
* to the print() function. |
|
787 |
* |
|
788 |
* e.g. |
|
789 |
* __plc_pt_c<INT, 8*sizeof(INT)> START_P::loc = __plc_pt_c<INT, 8*sizeof(INT)>("I2");
|
|
790 |
*/ |
|
791 |
typedef enum {finterface_vf,
|
|
| 145 | 792 |
foutputassign_vf, |
793 |
local_vf, |
|
794 |
localinit_vf, |
|
795 |
init_vf, |
|
796 |
constructorinit_vf, |
|
797 |
globalinit_vf |
|
798 |
} varformat_t; |
|
| 70 | 799 |
|
800 |
||
801 |
private: |
|
802 |
/* variable used to store the types of variables that need to be processed... */ |
|
803 |
/* Only set in the constructor...! */ |
|
804 |
/* Will contain a set of values of generate_c_vardecl_c::XXXX_vt */ |
|
805 |
unsigned int wanted_vartype; |
|
806 |
/* variable used to store the type of variable currently being processed... */ |
|
807 |
/* Will contain a single value of generate_c_vardecl_c::XXXX_vt */ |
|
808 |
unsigned int current_vartype; |
|
809 |
||
810 |
/* How variables should be declared: as local variables or |
|
811 |
* variables within a function interface... |
|
812 |
*/ |
|
813 |
/* Only set in the constructor...! */ |
|
814 |
varformat_t wanted_varformat; |
|
815 |
||
816 |
/* The number of variables already declared. */ |
|
817 |
/* Used to declare 'void' in case no variables are declared in a function interface... */ |
|
818 |
int finterface_var_count; |
|
819 |
||
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
820 |
/* Current parsed resource name, for resource |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
821 |
* specific global variable declaration (with #define...)*/ |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
822 |
symbol_c *resource_name; |
| 70 | 823 |
|
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
824 |
/* Store if En and ENO parameters have been defined by user */ |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
825 |
bool en_declared; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
826 |
bool eno_declared; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
827 |
|
| 70 | 828 |
/* Holds the references to the type and initial value |
829 |
* of the variables currently being declared. |
|
830 |
* Please read the comment under var1_init_decl_c for further |
|
831 |
* details... |
|
832 |
* |
|
833 |
* We make an effort to keep these pointers pointing to NULL |
|
834 |
* whenever we are outside the scope of variable declaration |
|
835 |
* (i.e. when we are traversing a part of the parse tree which |
|
836 |
* is not part of variable declaration) in order tio try to catch |
|
837 |
* any bugs as soon as possible. |
|
838 |
*/ |
|
839 |
symbol_c *current_var_type_symbol; |
|
840 |
symbol_c *current_var_init_symbol; |
|
841 |
void update_type_init(symbol_c *symbol /* a spec_init_c, subrange_spec_init_c, etc... */ ) {
|
|
842 |
this->current_var_type_symbol = spec_init_sperator_c::get_spec(symbol); |
|
843 |
this->current_var_init_symbol = spec_init_sperator_c::get_init(symbol); |
|
844 |
if (NULL == this->current_var_type_symbol) |
|
845 |
ERROR; |
|
846 |
if (NULL == this->current_var_init_symbol) {
|
|
847 |
/* We try to find the data type's default value... */ |
|
848 |
this->current_var_init_symbol = (symbol_c *)this->current_var_type_symbol->accept(*type_initial_value_c::instance()); |
|
849 |
/* Note that Function Block 'data types' do not have a default value, so we cannot abort if no default value is found! */ |
|
850 |
/* |
|
851 |
if (NULL == this->current_var_init_symbol) |
|
852 |
ERROR; |
|
853 |
*/ |
|
854 |
} |
|
855 |
} |
|
856 |
||
857 |
void void_type_init(void) {
|
|
858 |
this->current_var_type_symbol = NULL; |
|
859 |
this->current_var_init_symbol = NULL; |
|
860 |
} |
|
861 |
||
862 |
/* Only used when wanted_varformat == globalinit_vf |
|
863 |
* Holds a pointer to an identifier_c, which in turns contains |
|
864 |
* the identifier of the scope within which the static member was |
|
865 |
* declared. |
|
866 |
*/ |
|
867 |
symbol_c *globalnamespace; |
|
868 |
||
869 |
/* Actually produce the output where variables are declared... */ |
|
870 |
/* Note that located variables are the exception, they |
|
871 |
* being declared in the located_var_decl_c visitor... |
|
872 |
*/ |
|
873 |
void *declare_variables(symbol_c *symbol, bool is_fb = false) {
|
|
874 |
list_c *list = dynamic_cast<list_c *>(symbol); |
|
875 |
/* should NEVER EVER occur!! */ |
|
876 |
if (list == NULL) ERROR; |
|
877 |
||
878 |
/* now to produce the c equivalent... */ |
|
879 |
if ((wanted_varformat == local_vf) || |
|
880 |
(wanted_varformat == init_vf) || |
|
881 |
(wanted_varformat == localinit_vf)) {
|
|
882 |
for(int i = 0; i < list->n; i++) {
|
|
883 |
s4o.print(s4o.indent_spaces); |
|
884 |
if (wanted_varformat != init_vf) {
|
|
885 |
this->current_var_type_symbol->accept(*this); |
|
886 |
s4o.print(" ");
|
|
887 |
} |
|
888 |
print_variable_prefix(); |
|
889 |
list->elements[i]->accept(*this); |
|
890 |
if (wanted_varformat != local_vf) {
|
|
891 |
if (this->current_var_init_symbol != NULL) {
|
|
892 |
s4o.print(" = ");
|
|
893 |
this->current_var_init_symbol->accept(*this); |
|
894 |
} |
|
895 |
} |
|
896 |
s4o.print(";\n");
|
|
897 |
} |
|
898 |
} |
|
899 |
||
900 |
if (wanted_varformat == finterface_vf) {
|
|
901 |
for(int i = 0; i < list->n; i++) {
|
|
902 |
finterface_var_count++; |
|
903 |
s4o.print(nv->get()); |
|
904 |
s4o.print("\n" + s4o.indent_spaces);
|
|
905 |
this->current_var_type_symbol->accept(*this); |
|
906 |
if ((current_vartype & (output_vt | inoutput_vt)) != 0) |
|
| 145 | 907 |
s4o.print(" *__");
|
| 70 | 908 |
else |
909 |
s4o.print(" ");
|
|
910 |
list->elements[i]->accept(*this); |
|
911 |
/* We do not print the initial value at function declaration! |
|
912 |
* It is up to the caller to pass the correct default value |
|
913 |
* if none is specified in the ST source code |
|
914 |
*/ |
|
915 |
/* if (this->current_var_init_symbol != NULL) {
|
|
916 |
s4o.print(" = "); this->current_var_init_symbol->accept(*this);}
|
|
917 |
*/ |
|
918 |
} |
|
919 |
} |
|
920 |
||
| 145 | 921 |
if (wanted_varformat == foutputassign_vf) {
|
922 |
for(int i = 0; i < list->n; i++) {
|
|
923 |
if ((current_vartype & (output_vt | inoutput_vt)) != 0) {
|
|
924 |
s4o.print(s4o.indent_spaces + "if (__"); |
|
925 |
list->elements[i]->accept(*this); |
|
926 |
s4o.print(" != NULL) {\n");
|
|
927 |
s4o.indent_right(); |
|
928 |
s4o.print(s4o.indent_spaces + "*__"); |
|
929 |
list->elements[i]->accept(*this); |
|
930 |
s4o.print(" = ");
|
|
931 |
list->elements[i]->accept(*this); |
|
932 |
s4o.print(";\n");
|
|
933 |
s4o.indent_left(); |
|
934 |
s4o.print(s4o.indent_spaces + "}\n"); |
|
935 |
} |
|
936 |
} |
|
937 |
} |
|
938 |
||
| 70 | 939 |
if (wanted_varformat == constructorinit_vf) {
|
940 |
for(int i = 0; i < list->n; i++) {
|
|
941 |
if (is_fb) {
|
|
942 |
s4o.print(nv->get()); |
|
943 |
this->current_var_type_symbol->accept(*this); |
|
944 |
s4o.print(FB_INIT_SUFFIX); |
|
945 |
s4o.print("(&");
|
|
946 |
this->print_variable_prefix(); |
|
947 |
list->elements[i]->accept(*this); |
|
948 |
s4o.print(");");
|
|
949 |
} |
|
950 |
else if (this->current_var_init_symbol != NULL) {
|
|
951 |
s4o.print(nv->get()); |
|
952 |
this->print_variable_prefix(); |
|
953 |
list->elements[i]->accept(*this); |
|
954 |
s4o.print(" = ");
|
|
955 |
this->current_var_init_symbol->accept(*this); |
|
956 |
s4o.print(";");
|
|
957 |
} |
|
958 |
} |
|
959 |
} |
|
960 |
||
961 |
return NULL; |
|
962 |
} |
|
963 |
||
964 |
||
965 |
||
966 |
||
967 |
public: |
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
968 |
generate_c_vardecl_c(stage4out_c *s4o_ptr, varformat_t varformat, unsigned int vartype, symbol_c* res_name = NULL) |
| 70 | 969 |
: generate_c_typedecl_c(s4o_ptr) {
|
970 |
wanted_varformat = varformat; |
|
971 |
wanted_vartype = vartype; |
|
972 |
current_vartype = none_vt; |
|
973 |
current_var_type_symbol = NULL; |
|
974 |
current_var_init_symbol = NULL; |
|
975 |
globalnamespace = NULL; |
|
976 |
nv = NULL; |
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
977 |
resource_name = res_name; |
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
978 |
en_declared = false; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
979 |
eno_declared = false; |
| 70 | 980 |
} |
981 |
||
| 160 | 982 |
~generate_c_vardecl_c(void) {}
|
| 70 | 983 |
|
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
984 |
bool is_en_declared(void) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
985 |
return en_declared; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
986 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
987 |
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
988 |
bool is_eno_declared(void) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
989 |
return eno_declared; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
990 |
} |
| 70 | 991 |
|
992 |
void print(symbol_c *symbol, symbol_c *scope = NULL, const char *variable_prefix = NULL) {
|
|
993 |
this->set_variable_prefix(variable_prefix); |
|
994 |
if (globalinit_vf == wanted_varformat) |
|
995 |
globalnamespace = scope; |
|
996 |
||
997 |
finterface_var_count = 0; |
|
998 |
||
999 |
switch (wanted_varformat) {
|
|
1000 |
case constructorinit_vf: nv = new next_var_c("", "\n"+s4o.indent_spaces); break;
|
|
1001 |
case finterface_vf: /* fall through... */ |
|
1002 |
case localinit_vf: /* fall through... */ |
|
1003 |
case local_vf: nv = new next_var_c("", ", "); break;
|
|
1004 |
default: nv = NULL; |
|
1005 |
} /* switch() */ |
|
1006 |
||
1007 |
symbol->accept(*this); |
|
1008 |
||
1009 |
/* special case... */ |
|
1010 |
if (wanted_varformat == finterface_vf) |
|
1011 |
if (finterface_var_count == 0) |
|
1012 |
s4o.print("void");
|
|
1013 |
||
1014 |
delete nv; |
|
1015 |
nv = NULL; |
|
1016 |
globalnamespace = NULL; |
|
1017 |
} |
|
1018 |
||
1019 |
||
1020 |
protected: |
|
1021 |
/***************************/ |
|
1022 |
/* B 0 - Programming Model */ |
|
1023 |
/***************************/ |
|
1024 |
/* leave for derived classes... */ |
|
1025 |
||
1026 |
/*************************/ |
|
1027 |
/* B.1 - Common elements */ |
|
1028 |
/*************************/ |
|
1029 |
/*******************************************/ |
|
1030 |
/* B 1.1 - Letters, digits and identifiers */ |
|
1031 |
/*******************************************/ |
|
1032 |
/* done in base class(es) */ |
|
1033 |
||
1034 |
/*********************/ |
|
1035 |
/* B 1.2 - Constants */ |
|
1036 |
/*********************/ |
|
1037 |
/* originally empty... */ |
|
1038 |
||
1039 |
/******************************/ |
|
1040 |
/* B 1.2.1 - Numeric Literals */ |
|
1041 |
/******************************/ |
|
1042 |
/* done in base class(es) */ |
|
1043 |
||
1044 |
/*******************************/ |
|
1045 |
/* B.1.2.2 Character Strings */ |
|
1046 |
/*******************************/ |
|
1047 |
/* done in base class(es) */ |
|
1048 |
||
1049 |
/***************************/ |
|
1050 |
/* B 1.2.3 - Time Literals */ |
|
1051 |
/***************************/ |
|
1052 |
/************************/ |
|
1053 |
/* B 1.2.3.1 - Duration */ |
|
1054 |
/************************/ |
|
1055 |
/* done in base class(es) */ |
|
1056 |
||
1057 |
/************************************/ |
|
1058 |
/* B 1.2.3.2 - Time of day and Date */ |
|
1059 |
/************************************/ |
|
1060 |
/* done in base class(es) */ |
|
1061 |
||
1062 |
/**********************/ |
|
1063 |
/* B.1.3 - Data types */ |
|
1064 |
/**********************/ |
|
1065 |
/***********************************/ |
|
1066 |
/* B 1.3.1 - Elementary Data Types */ |
|
1067 |
/***********************************/ |
|
1068 |
/* done in base class(es) */ |
|
1069 |
||
1070 |
/********************************/ |
|
1071 |
/* B.1.3.2 - Generic data types */ |
|
1072 |
/********************************/ |
|
1073 |
/* originally empty... */ |
|
1074 |
||
1075 |
/********************************/ |
|
1076 |
/* B 1.3.3 - Derived data types */ |
|
1077 |
/********************************/ |
|
1078 |
/* done in base class(es) */ |
|
1079 |
||
1080 |
/*********************/ |
|
1081 |
/* B 1.4 - Variables */ |
|
1082 |
/*********************/ |
|
1083 |
/* done in base class(es) */ |
|
1084 |
||
1085 |
/********************************************/ |
|
1086 |
/* B.1.4.1 Directly Represented Variables */ |
|
1087 |
/********************************************/ |
|
1088 |
/* done in base class(es) */ |
|
1089 |
||
1090 |
/*************************************/ |
|
1091 |
/* B.1.4.2 Multi-element Variables */ |
|
1092 |
/*************************************/ |
|
1093 |
/* done in base class(es) */ |
|
1094 |
||
1095 |
/******************************************/ |
|
1096 |
/* B 1.4.3 - Declaration & Initialisation */ |
|
1097 |
/******************************************/ |
|
1098 |
void *visit(constant_option_c *symbol) {s4o.print("CONSTANT"); return NULL;}
|
|
1099 |
void *visit(retain_option_c *symbol) {s4o.print("RETAIN"); return NULL;}
|
|
1100 |
void *visit(non_retain_option_c *symbol) {s4o.print("NON_RETAIN"); return NULL;}
|
|
1101 |
||
1102 |
void *visit(input_declarations_c *symbol) {
|
|
1103 |
TRACE("input_declarations_c");
|
|
1104 |
if ((wanted_vartype & input_vt) != 0) {
|
|
1105 |
/* |
|
1106 |
// TO DO ... |
|
1107 |
if (symbol->option != NULL) |
|
1108 |
symbol->option->accept(*this); |
|
1109 |
*/ |
|
1110 |
//s4o.indent_right(); |
|
1111 |
current_vartype = input_vt; |
|
1112 |
symbol->input_declaration_list->accept(*this); |
|
1113 |
current_vartype = none_vt; |
|
1114 |
//s4o.indent_left(); |
|
1115 |
} |
|
1116 |
return NULL; |
|
1117 |
} |
|
1118 |
||
1119 |
/* helper symbol for input_declarations */ |
|
1120 |
void *visit(input_declaration_list_c *symbol) {
|
|
1121 |
TRACE("input_declaration_list_c");
|
|
1122 |
print_list(symbol); |
|
1123 |
return NULL; |
|
1124 |
} |
|
1125 |
||
1126 |
void *visit(edge_declaration_c *symbol) {
|
|
1127 |
TRACE("edge_declaration_c");
|
|
1128 |
// TO DO ... |
|
1129 |
symbol->var1_list->accept(*this); |
|
1130 |
s4o.print(" : BOOL ");
|
|
1131 |
symbol->edge->accept(*this); |
|
1132 |
return NULL; |
|
1133 |
} |
|
1134 |
||
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1135 |
void *visit(en_param_declaration_c *symbol) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1136 |
TRACE("en_declaration_c");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1137 |
if (en_declared) ERROR; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1138 |
if (wanted_varformat == finterface_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1139 |
finterface_var_count++; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1140 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1141 |
if ((current_vartype & eneno_vt) != 0) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1142 |
if (wanted_varformat == finterface_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1143 |
s4o.print(nv->get()); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1144 |
s4o.print("\n" + s4o.indent_spaces + "BOOL EN");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1145 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1146 |
if (wanted_varformat == constructorinit_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1147 |
s4o.print(nv->get()); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1148 |
this->print_variable_prefix(); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1149 |
s4o.print("ENO = __BOOL_LITERAL(TRUE);");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1150 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1151 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1152 |
en_declared = true; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1153 |
return NULL; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1154 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1155 |
|
| 70 | 1156 |
void *visit(raising_edge_option_c *symbol) {
|
1157 |
// TO DO ... |
|
1158 |
s4o.print("R_EDGE");
|
|
1159 |
return NULL; |
|
1160 |
} |
|
1161 |
||
| 98 | 1162 |
/* var1_list ':' array_spec_init */ |
1163 |
// SYM_REF2(array_var_init_decl_c, var1_list, array_spec_init) |
|
1164 |
void *visit(array_var_init_decl_c *symbol) {
|
|
1165 |
TRACE("array_var_init_decl_c");
|
|
1166 |
/* Please read the comments inside the var1_init_decl_c |
|
1167 |
* visitor, as they apply here too. |
|
1168 |
*/ |
|
1169 |
||
1170 |
/* Start off by setting the current_var_type_symbol and |
|
1171 |
* current_var_init_symbol private variables... |
|
1172 |
*/ |
|
1173 |
update_type_init(symbol->array_spec_init); |
|
1174 |
||
1175 |
/* now to produce the c equivalent... */ |
|
| 160 | 1176 |
if (wanted_varformat == constructorinit_vf) {
|
1177 |
generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o); |
|
1178 |
array_initialization->set_variable_prefix(get_variable_prefix()); |
|
1179 |
array_initialization->init_array(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol); |
|
1180 |
delete array_initialization; |
|
1181 |
} |
|
| 98 | 1182 |
else |
1183 |
symbol->var1_list->accept(*this); |
|
1184 |
||
1185 |
/* Values no longer in scope, and therefore no longer used. |
|
1186 |
* Make an effort to keep them set to NULL when not in use |
|
1187 |
* in order to catch bugs as soon as possible... |
|
1188 |
*/ |
|
1189 |
void_type_init(); |
|
1190 |
||
1191 |
return NULL; |
|
1192 |
} |
|
| 70 | 1193 |
|
1194 |
/* var1_list ':' initialized_structure */ |
|
1195 |
// SYM_REF2(structured_var_init_decl_c, var1_list, initialized_structure) |
|
1196 |
void *visit(structured_var_init_decl_c *symbol) {
|
|
1197 |
TRACE("structured_var_init_decl_c");
|
|
1198 |
/* Please read the comments inside the var1_init_decl_c |
|
1199 |
* visitor, as they apply here too. |
|
1200 |
*/ |
|
1201 |
||
1202 |
/* Start off by setting the current_var_type_symbol and |
|
1203 |
* current_var_init_symbol private variables... |
|
1204 |
*/ |
|
1205 |
update_type_init(symbol->initialized_structure); |
|
1206 |
||
1207 |
/* now to produce the c equivalent... */ |
|
| 160 | 1208 |
if (wanted_varformat == constructorinit_vf) {
|
1209 |
generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o); |
|
1210 |
structure_initialization->set_variable_prefix(get_variable_prefix()); |
|
1211 |
structure_initialization->init_structure(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol); |
|
1212 |
delete structure_initialization; |
|
1213 |
} |
|
1214 |
else |
|
1215 |
symbol->var1_list->accept(*this); |
|
| 70 | 1216 |
|
1217 |
/* Values no longer in scope, and therefore no longer used. |
|
1218 |
* Make an effort to keep them set to NULL when not in use |
|
1219 |
* in order to catch bugs as soon as possible... |
|
1220 |
*/ |
|
1221 |
void_type_init(); |
|
1222 |
||
1223 |
return NULL; |
|
1224 |
} |
|
1225 |
||
1226 |
/* fb_name_list ':' function_block_type_name ASSIGN structure_initialization */ |
|
1227 |
/* structure_initialization -> may be NULL ! */ |
|
1228 |
void *visit(fb_name_decl_c *symbol) {
|
|
1229 |
TRACE("fb_name_decl_c");
|
|
1230 |
/* Please read the comments inside the var1_init_decl_c |
|
1231 |
* visitor, as they apply here too. |
|
1232 |
*/ |
|
1233 |
||
1234 |
/* Start off by setting the current_var_type_symbol and |
|
1235 |
* current_var_init_symbol private variables... |
|
1236 |
*/ |
|
1237 |
update_type_init(symbol); |
|
1238 |
||
1239 |
/* now to produce the c equivalent... */ |
|
1240 |
symbol->fb_name_list->accept(*this); |
|
1241 |
||
1242 |
/* Values no longer in scope, and therefore no longer used. |
|
1243 |
* Make an effort to keep them set to NULL when not in use |
|
1244 |
* in order to catch bugs as soon as possible... |
|
1245 |
*/ |
|
1246 |
void_type_init(); |
|
1247 |
||
1248 |
return NULL; |
|
1249 |
} |
|
1250 |
||
1251 |
/* fb_name_list ',' fb_name */ |
|
1252 |
void *visit(fb_name_list_c *symbol) {
|
|
1253 |
TRACE("fb_name_list_c");
|
|
1254 |
declare_variables(symbol, true); |
|
1255 |
return NULL; |
|
1256 |
} |
|
1257 |
||
1258 |
||
1259 |
/* VAR_OUTPUT [RETAIN | NON_RETAIN] var_init_decl_list END_VAR */ |
|
1260 |
/* option -> may be NULL ! */ |
|
1261 |
void *visit(output_declarations_c *symbol) {
|
|
1262 |
TRACE("output_declarations_c");
|
|
1263 |
if ((wanted_vartype & output_vt) != 0) {
|
|
1264 |
/* |
|
1265 |
// TO DO ... |
|
1266 |
if (symbol->option != NULL) |
|
1267 |
symbol->option->accept(*this); |
|
1268 |
*/ |
|
1269 |
//s4o.indent_right(); |
|
1270 |
current_vartype = output_vt; |
|
1271 |
symbol->var_init_decl_list->accept(*this); |
|
1272 |
current_vartype = none_vt; |
|
1273 |
//s4o.indent_left(); |
|
1274 |
} |
|
1275 |
return NULL; |
|
1276 |
} |
|
1277 |
||
|
146
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1278 |
void *visit(eno_param_declaration_c *symbol) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1279 |
TRACE("eno_declaration_c");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1280 |
if (eno_declared) ERROR; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1281 |
if (wanted_varformat == finterface_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1282 |
finterface_var_count++; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1283 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1284 |
if ((current_vartype & eneno_vt) != 0) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1285 |
if (wanted_varformat == finterface_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1286 |
s4o.print(nv->get()); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1287 |
s4o.print("\n" + s4o.indent_spaces + "BOOL *EN0");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1288 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1289 |
if (wanted_varformat == constructorinit_vf) {
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1290 |
s4o.print(nv->get()); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1291 |
this->print_variable_prefix(); |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1292 |
s4o.print("ENO = __BOOL_LITERAL(TRUE);");
|
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1293 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1294 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1295 |
eno_declared = true; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1296 |
return NULL; |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1297 |
} |
|
eef5e62048c7
Adding support for EN/ENO params in function and function blocks (standard function not supported yet)
lbessard
parents:
145
diff
changeset
|
1298 |
|
| 70 | 1299 |
/* VAR_IN_OUT var_declaration_list END_VAR */ |
1300 |
void *visit(input_output_declarations_c *symbol) {
|
|
1301 |
TRACE("input_output_declarations_c");
|
|
1302 |
if ((wanted_vartype & inoutput_vt) != 0) {
|
|
1303 |
//s4o.indent_right(); |
|
1304 |
current_vartype = inoutput_vt; |
|
1305 |
symbol->var_declaration_list->accept(*this); |
|
1306 |
current_vartype = none_vt; |
|
1307 |
//s4o.indent_left(); |
|
1308 |
} |
|
1309 |
return NULL; |
|
1310 |
} |
|
1311 |
||
1312 |
/* helper symbol for input_output_declarations */ |
|
1313 |
/* var_declaration_list var_declaration ';' */ |
|
1314 |
void *visit(var_declaration_list_c *symbol) {
|
|
1315 |
TRACE("var_declaration_list_c");
|
|
1316 |
print_list(symbol); |
|
1317 |
return NULL; |
|
1318 |
} |
|
1319 |
||
1320 |
#if 0 |
|
1321 |
/* var1_list ':' array_specification */ |
|
1322 |
SYM_REF2(array_var_declaration_c, var1_list, array_specification) |
|
1323 |
#endif |
|
1324 |
||
| 98 | 1325 |
void *visit(array_initial_elements_list_c *symbol) {
|
1326 |
s4o.print(";// array initialisation");
|
|
1327 |
return NULL; |
|
1328 |
} |
|
1329 |
||
| 70 | 1330 |
/* var1_list ':' structure_type_name */ |
1331 |
//SYM_REF2(structured_var_declaration_c, var1_list, structure_type_name) |
|
1332 |
void *visit(structured_var_declaration_c *symbol) {
|
|
1333 |
TRACE("structured_var_declaration_c");
|
|
1334 |
/* Please read the comments inside the var1_init_decl_c |
|
1335 |
* visitor, as they apply here too. |
|
1336 |
*/ |
|
1337 |
||
1338 |
/* Start off by setting the current_var_type_symbol and |
|
1339 |
* current_var_init_symbol private variables... |
|
1340 |
*/ |
|
1341 |
update_type_init(symbol->structure_type_name); |
|
1342 |
||
| 160 | 1343 |
if (wanted_varformat == constructorinit_vf) {
|
1344 |
generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o); |
|
1345 |
structure_initialization->set_variable_prefix(get_variable_prefix()); |
|
1346 |
structure_initialization->init_structure(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol); |
|
1347 |
delete structure_initialization; |
|
1348 |
} |
|
1349 |
else |
|
1350 |
/* now to produce the c equivalent... */ |
|
1351 |
symbol->var1_list->accept(*this); |
|
| 70 | 1352 |
|
1353 |
/* Values no longer in scope, and therefore no longer used. |
|
1354 |
* Make an effort to keep them set to NULL when not in use |
|
1355 |
* in order to catch bugs as soon as possible... |
|
1356 |
*/ |
|
1357 |
void_type_init(); |
|
1358 |
||
1359 |
return NULL; |
|
1360 |
} |
|
1361 |
||
1362 |
||
1363 |
/* VAR [CONSTANT] var_init_decl_list END_VAR */ |
|
1364 |
/* option -> may be NULL ! */ |
|
1365 |
/* helper symbol for input_declarations */ |
|
1366 |
void *visit(var_declarations_c *symbol) {
|
|
1367 |
TRACE("var_declarations_c");
|
|
1368 |
if ((wanted_vartype & private_vt) != 0) {
|
|
1369 |
/* |
|
1370 |
// TO DO ... |
|
1371 |
if (symbol->option != NULL) |
|
1372 |
symbol->option->accept(*this); |
|
1373 |
*/ |
|
1374 |
current_vartype = private_vt; |
|
1375 |
symbol->var_init_decl_list->accept(*this); |
|
1376 |
current_vartype = none_vt; |
|
1377 |
} |
|
1378 |
return NULL; |
|
1379 |
} |
|
1380 |
||
1381 |
/* VAR RETAIN var_init_decl_list END_VAR */ |
|
1382 |
void *visit(retentive_var_declarations_c *symbol) {
|
|
1383 |
TRACE("retentive_var_declarations_c");
|
|
1384 |
if ((wanted_vartype & private_vt) != 0) {
|
|
1385 |
current_vartype = private_vt; |
|
1386 |
symbol->var_init_decl_list->accept(*this); |
|
1387 |
current_vartype = none_vt; |
|
1388 |
} |
|
1389 |
return NULL; |
|
1390 |
} |
|
1391 |
||
1392 |
/* VAR [CONSTANT|RETAIN|NON_RETAIN] located_var_decl_list END_VAR */ |
|
1393 |
/* option -> may be NULL ! */ |
|
1394 |
//SYM_REF2(located_var_declarations_c, option, located_var_decl_list) |
|
1395 |
void *visit(located_var_declarations_c *symbol) {
|
|
1396 |
TRACE("located_var_declarations_c");
|
|
1397 |
if ((wanted_vartype & located_vt) != 0) {
|
|
1398 |
/* |
|
1399 |
// TO DO ... |
|
1400 |
if (symbol->option != NULL) |
|
1401 |
symbol->option->accept(*this); |
|
1402 |
*/ |
|
1403 |
current_vartype = located_vt; |
|
1404 |
symbol->located_var_decl_list->accept(*this); |
|
1405 |
current_vartype = none_vt; |
|
1406 |
} |
|
1407 |
return NULL; |
|
1408 |
} |
|
1409 |
||
1410 |
/* helper symbol for located_var_declarations */ |
|
1411 |
/* located_var_decl_list located_var_decl ';' */ |
|
1412 |
//SYM_LIST(located_var_decl_list_c) |
|
1413 |
void *visit(located_var_decl_list_c *symbol) {
|
|
1414 |
TRACE("located_var_decl_list_c");
|
|
1415 |
print_list(symbol); |
|
1416 |
return NULL; |
|
1417 |
} |
|
1418 |
||
1419 |
||
1420 |
/* [variable_name] location ':' located_var_spec_init */ |
|
1421 |
/* variable_name -> may be NULL ! */ |
|
1422 |
//SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused) |
|
1423 |
void *visit(located_var_decl_c *symbol) {
|
|
1424 |
TRACE("located_var_decl_c");
|
|
1425 |
/* Please read the comments inside the var1_init_decl_c |
|
1426 |
* visitor, as they apply here too. |
|
1427 |
*/ |
|
1428 |
||
1429 |
/* Start off by setting the current_var_type_symbol and |
|
1430 |
* current_var_init_symbol private variables... |
|
1431 |
*/ |
|
1432 |
update_type_init(symbol->located_var_spec_init); |
|
1433 |
||
1434 |
/* now to produce the c equivalent... */ |
|
1435 |
switch(wanted_varformat) {
|
|
1436 |
case local_vf: |
|
1437 |
s4o.print(s4o.indent_spaces); |
|
1438 |
this->current_var_type_symbol->accept(*this); |
|
1439 |
s4o.print(" *");
|
|
1440 |
if (symbol->variable_name != NULL) |
|
1441 |
symbol->variable_name->accept(*this); |
|
1442 |
else |
|
1443 |
symbol->location->accept(*this); |
|
1444 |
s4o.print(";\n");
|
|
1445 |
break; |
|
1446 |
||
1447 |
case constructorinit_vf: |
|
1448 |
s4o.print(nv->get()); |
|
1449 |
s4o.print("{extern ");
|
|
1450 |
this->current_var_type_symbol->accept(*this); |
|
| 122 | 1451 |
s4o.print("* ");
|
| 70 | 1452 |
symbol->location->accept(*this); |
1453 |
s4o.print("; ");
|
|
1454 |
print_variable_prefix(); |
|
1455 |
if (symbol->variable_name != NULL) |
|
1456 |
symbol->variable_name->accept(*this); |
|
1457 |
else |
|
1458 |
symbol->location->accept(*this); |
|
| 122 | 1459 |
s4o.print(" = ");
|
| 70 | 1460 |
symbol->location->accept(*this); |
| 152 | 1461 |
if (this->current_var_init_symbol != NULL) {
|
1462 |
s4o.print("; *");
|
|
1463 |
print_variable_prefix(); |
|
1464 |
if (symbol->variable_name != NULL) |
|
1465 |
symbol->variable_name->accept(*this); |
|
1466 |
else |
|
1467 |
symbol->location->accept(*this); |
|
1468 |
s4o.print(" = ");
|
|
1469 |
this->current_var_init_symbol->accept(*this); |
|
1470 |
} |
|
| 70 | 1471 |
s4o.print(";}");
|
1472 |
break; |
|
1473 |
||
1474 |
case globalinit_vf: |
|
1475 |
s4o.print(s4o.indent_spaces + "__plc_pt_c<"); |
|
1476 |
this->current_var_type_symbol->accept(*this); |
|
1477 |
s4o.print(", 8*sizeof(");
|
|
1478 |
this->current_var_type_symbol->accept(*this); |
|
1479 |
s4o.print(")> ");
|
|
1480 |
if (this->globalnamespace != NULL) {
|
|
1481 |
this->globalnamespace->accept(*this); |
|
1482 |
s4o.print("::");
|
|
1483 |
} |
|
1484 |
if (symbol->variable_name != NULL) |
|
1485 |
symbol->variable_name->accept(*this); |
|
1486 |
else |
|
1487 |
symbol->location->accept(*this); |
|
1488 |
||
1489 |
s4o.print(" = ");
|
|
1490 |
||
1491 |
s4o.print(s4o.indent_spaces + "__plc_pt_c<"); |
|
1492 |
this->current_var_type_symbol->accept(*this); |
|
1493 |
s4o.print(", 8*sizeof(");
|
|
1494 |
this->current_var_type_symbol->accept(*this); |
|
1495 |
s4o.print(")>(\"");
|
|
1496 |
symbol->location->accept(*this); |
|
1497 |
s4o.print("\"");
|
|
1498 |
if (this->current_var_init_symbol != NULL) {
|
|
1499 |
s4o.print(", ");
|
|
1500 |
this->current_var_init_symbol->accept(*this); |
|
1501 |
} |
|
1502 |
s4o.print(");\n");
|
|
1503 |
break; |
|
1504 |
||
1505 |
default: |
|
1506 |
ERROR; |
|
1507 |
} /* switch() */ |
|
1508 |
||
1509 |
/* Values no longer in scope, and therefore no longer used. |
|
1510 |
* Make an effort to keep them set to NULL when not in use |
|
1511 |
* in order to catch bugs as soon as possible... |
|
1512 |
*/ |
|
1513 |
void_type_init(); |
|
1514 |
||
1515 |
return NULL; |
|
1516 |
} |
|
1517 |
||
1518 |
||
1519 |
||
1520 |
||
1521 |
/*| VAR_EXTERNAL [CONSTANT] external_declaration_list END_VAR */ |
|
1522 |
/* option -> may be NULL ! */ |
|
1523 |
//SYM_REF2(external_var_declarations_c, option, external_declaration_list) |
|
1524 |
void *visit(external_var_declarations_c *symbol) {
|
|
1525 |
TRACE("external_var_declarations_c");
|
|
1526 |
if ((wanted_vartype & external_vt) != 0) {
|
|
1527 |
/* |
|
1528 |
// TODO ... |
|
1529 |
if (symbol->option != NULL) |
|
1530 |
symbol->option->accept(*this); |
|
1531 |
*/ |
|
1532 |
//s4o.indent_right(); |
|
1533 |
current_vartype = external_vt; |
|
1534 |
symbol->external_declaration_list->accept(*this); |
|
1535 |
current_vartype = none_vt; |
|
1536 |
//s4o.indent_left(); |
|
1537 |
} |
|
1538 |
return NULL; |
|
1539 |
} |
|
1540 |
||
1541 |
/* helper symbol for external_var_declarations */ |
|
1542 |
/*| external_declaration_list external_declaration';' */ |
|
1543 |
//SYM_LIST(external_declaration_list_c) |
|
1544 |
/* helper symbol for input_declarations */ |
|
1545 |
void *visit(external_declaration_list_c *symbol) {
|
|
1546 |
TRACE("external_declaration_list_c");
|
|
1547 |
print_list(symbol); |
|
1548 |
return NULL; |
|
1549 |
} |
|
1550 |
||
1551 |
||
1552 |
/* global_var_name ':' (simple_specification|subrange_specification|enumerated_specification|array_specification|prev_declared_structure_type_name|function_block_type_name */ |
|
1553 |
//SYM_REF2(external_declaration_c, global_var_name, specification) |
|
1554 |
void *visit(external_declaration_c *symbol) {
|
|
1555 |
TRACE("external_declaration_c");
|
|
1556 |
/* Please read the comments inside the var1_init_decl_c |
|
1557 |
* visitor, as they apply here too. |
|
1558 |
*/ |
|
1559 |
||
1560 |
/* Start off by setting the current_var_type_symbol and |
|
1561 |
* current_var_init_symbol private variables... |
|
1562 |
*/ |
|
1563 |
this->current_var_type_symbol = symbol->specification; |
|
1564 |
this->current_var_init_symbol = NULL; |
|
1565 |
||
1566 |
/* now to produce the c equivalent... */ |
|
1567 |
switch (wanted_varformat) {
|
|
1568 |
case local_vf: |
|
1569 |
case localinit_vf: |
|
1570 |
s4o.print(s4o.indent_spaces); |
|
1571 |
this->current_var_type_symbol->accept(*this); |
|
1572 |
s4o.print(" *");
|
|
1573 |
symbol->global_var_name->accept(*this); |
|
1574 |
if ((wanted_varformat == localinit_vf) && |
|
1575 |
(this->current_var_init_symbol != NULL)) {
|
|
1576 |
s4o.print(" = ");
|
|
1577 |
this->current_var_init_symbol->accept(*this); |
|
1578 |
} |
|
1579 |
s4o.print(";\n");
|
|
1580 |
break; |
|
1581 |
||
1582 |
case constructorinit_vf: |
|
1583 |
s4o.print(nv->get()); |
|
1584 |
s4o.print("{extern ");
|
|
1585 |
this->current_var_type_symbol->accept(*this); |
|
1586 |
s4o.print(" *");
|
|
1587 |
symbol->global_var_name->accept(*this); |
|
1588 |
s4o.print("; ");
|
|
1589 |
print_variable_prefix(); |
|
1590 |
symbol->global_var_name->accept(*this); |
|
1591 |
s4o.print(" = ");
|
|
1592 |
symbol->global_var_name->accept(*this); |
|
1593 |
s4o.print(";}");
|
|
1594 |
break; |
|
1595 |
||
1596 |
case finterface_vf: |
|
1597 |
finterface_var_count++; |
|
1598 |
s4o.print(nv->get()); |
|
1599 |
this->current_var_type_symbol->accept(*this); |
|
1600 |
s4o.print(" *");
|
|
1601 |
symbol->global_var_name->accept(*this); |
|
1602 |
break; |
|
1603 |
||
1604 |
default: |
|
1605 |
ERROR; |
|
1606 |
} |
|
1607 |
||
1608 |
/* Values no longer in scope, and therefore no longer used. |
|
1609 |
* Make an effort to keep them set to NULL when not in use |
|
1610 |
* in order to catch bugs as soon as possible... |
|
1611 |
*/ |
|
1612 |
void_type_init(); |
|
1613 |
||
1614 |
return NULL; |
|
1615 |
} |
|
1616 |
||
1617 |
||
1618 |
||
1619 |
/*| VAR_GLOBAL [CONSTANT|RETAIN] global_var_decl_list END_VAR */ |
|
1620 |
/* option -> may be NULL ! */ |
|
1621 |
// SYM_REF2(global_var_declarations_c, option, global_var_decl_list) |
|
1622 |
void *visit(global_var_declarations_c *symbol) {
|
|
1623 |
TRACE("global_var_declarations_c");
|
|
1624 |
if ((wanted_vartype & global_vt) != 0) {
|
|
1625 |
/* |
|
1626 |
// TODO ... |
|
1627 |
if (symbol->option != NULL) |
|
1628 |
symbol->option->accept(*this); |
|
1629 |
*/ |
|
1630 |
//s4o.indent_right(); |
|
1631 |
unsigned int previous_vartype = current_vartype; |
|
1632 |
// previous_vartype will be either none_vt, or resource_vt |
|
1633 |
current_vartype = global_vt; |
|
1634 |
symbol->global_var_decl_list->accept(*this); |
|
1635 |
current_vartype = previous_vartype; |
|
1636 |
//s4o.indent_left(); |
|
1637 |
} |
|
1638 |
return NULL; |
|
1639 |
} |
|
1640 |
||
1641 |
/* helper symbol for global_var_declarations */ |
|
1642 |
/*| global_var_decl_list global_var_decl ';' */ |
|
1643 |
//SYM_LIST(global_var_decl_list_c) |
|
1644 |
void *visit(global_var_decl_list_c *symbol) {
|
|
1645 |
TRACE("global_var_decl_list_c");
|
|
1646 |
print_list(symbol); |
|
1647 |
return NULL; |
|
1648 |
} |
|
1649 |
||
1650 |
||
1651 |
||
1652 |
/*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */ |
|
1653 |
/* type_specification ->may be NULL ! */ |
|
1654 |
// SYM_REF2(global_var_decl_c, global_var_spec, type_specification) |
|
1655 |
void *visit(global_var_decl_c *symbol) {
|
|
1656 |
TRACE("global_var_decl_c");
|
|
1657 |
/* Please read the comments inside the var1_init_decl_c |
|
1658 |
* visitor, as they apply here too. |
|
1659 |
*/ |
|
1660 |
||
1661 |
/* Start off by setting the current_var_type_symbol and |
|
1662 |
* current_var_init_symbol private variables... |
|
1663 |
*/ |
|
1664 |
update_type_init(symbol->type_specification); |
|
1665 |
||
1666 |
/* now to produce the c equivalent... */ |
|
1667 |
symbol->global_var_spec->accept(*this); |
|
1668 |
||
1669 |
/* Values no longer in scope, and therefore no longer used. |
|
1670 |
* Make an effort to keep them set to NULL when not in use |
|
1671 |
* in order to catch bugs as soon as possible... |
|
1672 |
*/ |
|
1673 |
void_type_init(); |
|
1674 |
||
1675 |
return NULL; |
|
1676 |
} |
|
1677 |
||
1678 |
||
1679 |
/*| global_var_name location */ |
|
1680 |
// SYM_REF2(global_var_spec_c, global_var_name, location) |
|
1681 |
void *visit(global_var_spec_c *symbol) {
|
|
1682 |
TRACE("global_var_spec_c");
|
|
1683 |
||
1684 |
/* now to produce the c equivalent... */ |
|
1685 |
switch(wanted_varformat) {
|
|
1686 |
case local_vf: |
|
1687 |
s4o.print(s4o.indent_spaces); |
|
1688 |
if (symbol->global_var_name != NULL) {
|
|
1689 |
s4o.print("extern ");
|
|
1690 |
this->current_var_type_symbol->accept(*this); |
|
| 122 | 1691 |
s4o.print("* ");
|
| 70 | 1692 |
symbol->location->accept(*this); |
1693 |
s4o.print(";\n");
|
|
1694 |
this->current_var_type_symbol->accept(*this); |
|
1695 |
s4o.print(" *");
|
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1696 |
if (this->resource_name != NULL) {
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1697 |
this->resource_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1698 |
s4o.print("__");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1699 |
} |
| 70 | 1700 |
symbol->global_var_name->accept(*this); |
1701 |
s4o.print(";\n");
|
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1702 |
if (this->resource_name != NULL) {
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1703 |
s4o.print("#define ");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1704 |
symbol->global_var_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1705 |
s4o.print(" ");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1706 |
this->resource_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1707 |
s4o.print("__");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1708 |
symbol->global_var_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1709 |
s4o.print("\n");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1710 |
} |
| 70 | 1711 |
} |
1712 |
break; |
|
1713 |
||
1714 |
case constructorinit_vf: |
|
1715 |
s4o.print(nv->get()); |
|
1716 |
||
1717 |
if (symbol->global_var_name != NULL) {
|
|
|
128
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1718 |
symbol->global_var_name->accept(*this); |
|
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1719 |
s4o.print(" = ");
|
|
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1720 |
symbol->location->accept(*this); |
|
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1721 |
s4o.print(";");
|
|
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1722 |
s4o.print(nv->get()); |
|
fd5760f30682
Changed located global variable declaration and init to reflec recent change on located vars (pointers)
etisserant
parents:
122
diff
changeset
|
1723 |
s4o.print("*");
|
| 70 | 1724 |
symbol->global_var_name->accept(*this); |
1725 |
} |
|
1726 |
else |
|
1727 |
symbol->location->accept(*this); |
|
1728 |
s4o.print(" = ");
|
|
1729 |
if (this->current_var_init_symbol != NULL) {
|
|
1730 |
this->current_var_init_symbol->accept(*this); |
|
1731 |
} |
|
1732 |
s4o.print(";");
|
|
1733 |
break; |
|
1734 |
||
1735 |
default: |
|
1736 |
ERROR; |
|
1737 |
} /* switch() */ |
|
1738 |
||
1739 |
return NULL; |
|
1740 |
} |
|
1741 |
||
1742 |
||
1743 |
||
1744 |
/* AT direct_variable */ |
|
1745 |
// SYM_REF2(location_c, direct_variable, unused) |
|
1746 |
void *visit(location_c *symbol) {
|
|
1747 |
TRACE("location_c");
|
|
1748 |
return symbol->direct_variable->accept(*this); |
|
1749 |
} |
|
1750 |
||
1751 |
||
1752 |
/*| global_var_list ',' global_var_name */ |
|
1753 |
//SYM_LIST(global_var_list_c) |
|
1754 |
void *visit(global_var_list_c *symbol) {
|
|
1755 |
TRACE("global_var_list_c");
|
|
1756 |
list_c *list = dynamic_cast<list_c *>(symbol); |
|
1757 |
/* should NEVER EVER occur!! */ |
|
1758 |
if (list == NULL) ERROR; |
|
1759 |
||
1760 |
/* now to produce the c equivalent... */ |
|
1761 |
switch (wanted_varformat) {
|
|
1762 |
case local_vf: |
|
1763 |
case localinit_vf: |
|
1764 |
for(int i = 0; i < list->n; i++) {
|
|
1765 |
s4o.print(s4o.indent_spaces); |
|
1766 |
this->current_var_type_symbol->accept(*this); |
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1767 |
s4o.print(" ");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1768 |
if(this->resource_name != NULL) |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1769 |
this->resource_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1770 |
s4o.print("__");
|
| 70 | 1771 |
list->elements[i]->accept(*this); |
1772 |
s4o.print(";\n");
|
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1773 |
if(this->resource_name != NULL) |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1774 |
s4o.print("static ");
|
| 70 | 1775 |
this->current_var_type_symbol->accept(*this); |
1776 |
s4o.print(" *");
|
|
1777 |
list->elements[i]->accept(*this); |
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1778 |
s4o.print(" = &");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1779 |
if(this->resource_name != NULL) |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1780 |
this->resource_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
1781 |
s4o.print("__");
|
| 70 | 1782 |
list->elements[i]->accept(*this); |
1783 |
#if 0 |
|
1784 |
if (wanted_varformat == localinit_vf) {
|
|
1785 |
if (this->current_var_init_symbol != NULL) {
|
|
1786 |
s4o.print(" = ");
|
|
1787 |
this->current_var_init_symbol->accept(*this); |
|
1788 |
} |
|
1789 |
} |
|
1790 |
#endif |
|
1791 |
s4o.print(";\n");
|
|
1792 |
} |
|
1793 |
break; |
|
1794 |
||
1795 |
case constructorinit_vf: |
|
1796 |
if (this->current_var_init_symbol != NULL) {
|
|
1797 |
for(int i = 0; i < list->n; i++) {
|
|
1798 |
s4o.print(nv->get()); |
|
1799 |
||
1800 |
s4o.print("*");
|
|
1801 |
list->elements[i]->accept(*this); |
|
1802 |
s4o.print(" = ");
|
|
1803 |
this->current_var_init_symbol->accept(*this); |
|
1804 |
s4o.print(";");
|
|
1805 |
#if 0 |
|
1806 |
/* The following code would be for globalinit_vf !! |
|
1807 |
* But it is not currently required... |
|
1808 |
*/ |
|
1809 |
s4o.print(s4o.indent_spaces + "__ext_element_c<"); |
|
1810 |
this->current_var_type_symbol->accept(*this); |
|
1811 |
s4o.print("> ");
|
|
1812 |
if (this->globalnamespace != NULL) {
|
|
1813 |
this->globalnamespace->accept(*this); |
|
1814 |
s4o.print("::");
|
|
1815 |
} |
|
1816 |
list->elements[i]->accept(*this); |
|
1817 |
||
1818 |
if (this->current_var_init_symbol != NULL) {
|
|
1819 |
s4o.print(" = ");
|
|
1820 |
s4o.print("__ext_element_c<");
|
|
1821 |
this->current_var_type_symbol->accept(*this); |
|
1822 |
s4o.print(">(");
|
|
1823 |
this->current_var_init_symbol->accept(*this); |
|
1824 |
s4o.print(")");
|
|
1825 |
} |
|
1826 |
s4o.print(";\n");
|
|
1827 |
#endif |
|
1828 |
} |
|
1829 |
} |
|
1830 |
break; |
|
1831 |
||
1832 |
default: |
|
1833 |
ERROR; /* not supported, and not needed either... */ |
|
1834 |
} |
|
1835 |
||
1836 |
return NULL; |
|
1837 |
} |
|
1838 |
||
1839 |
||
1840 |
#if 0 |
|
1841 |
/* var1_list ':' single_byte_string_spec */ |
|
1842 |
SYM_REF2(single_byte_string_var_declaration_c, var1_list, single_byte_string_spec) |
|
1843 |
||
1844 |
/* STRING ['[' integer ']'] [ASSIGN single_byte_character_string] */ |
|
1845 |
/* integer ->may be NULL ! */ |
|
1846 |
/* single_byte_character_string ->may be NULL ! */ |
|
1847 |
SYM_REF2(single_byte_string_spec_c, integer, single_byte_character_string) |
|
1848 |
||
1849 |
/* var1_list ':' double_byte_string_spec */ |
|
1850 |
SYM_REF2(double_byte_string_var_declaration_c, var1_list, double_byte_string_spec) |
|
1851 |
||
1852 |
/* WSTRING ['[' integer ']'] [ASSIGN double_byte_character_string] */ |
|
1853 |
/* integer ->may be NULL ! */ |
|
1854 |
/* double_byte_character_string ->may be NULL ! */ |
|
1855 |
SYM_REF2(double_byte_string_spec_c, integer, double_byte_character_string) |
|
1856 |
||
1857 |
/*| VAR [RETAIN|NON_RETAIN] incompl_located_var_decl_list END_VAR */ |
|
1858 |
/* option ->may be NULL ! */ |
|
1859 |
SYM_REF2(incompl_located_var_declarations_c, option, incompl_located_var_decl_list) |
|
1860 |
||
1861 |
/* helper symbol for incompl_located_var_declarations */ |
|
1862 |
/*| incompl_located_var_decl_list incompl_located_var_decl ';' */ |
|
1863 |
SYM_LIST(incompl_located_var_decl_list_c) |
|
1864 |
||
1865 |
/* variable_name incompl_location ':' var_spec */ |
|
1866 |
SYM_REF4(incompl_located_var_decl_c, variable_name, incompl_location, var_spec, unused) |
|
1867 |
||
1868 |
/* AT incompl_location_token */ |
|
1869 |
SYM_TOKEN(incompl_location_c) |
|
1870 |
#endif |
|
1871 |
||
1872 |
||
1873 |
void *visit(falling_edge_option_c *symbol) {
|
|
1874 |
// TO DO ... |
|
1875 |
s4o.print("F_EDGE");
|
|
1876 |
return NULL; |
|
1877 |
} |
|
1878 |
||
1879 |
||
1880 |
void *visit(var1_init_decl_c *symbol) {
|
|
1881 |
TRACE("var1_init_decl_c");
|
|
1882 |
/* We have several implementation alternatives here... |
|
1883 |
* |
|
1884 |
* The issue is that generation of c code |
|
1885 |
* based on the abstract syntax tree requires the reversal |
|
1886 |
* of the symbol order compared to st. For e.g.: |
|
1887 |
* (ST) a, b, c: INT := 98; |
|
1888 |
* (C ) int a=98, b=98, c=98; |
|
1889 |
* The spec_init contains the references to 'INT' and '98'. |
|
1890 |
* The var1_list contains the references to 'a', 'b', and 'c'. |
|
1891 |
* The var1_init_decl_c contains the references to spec_init and var1_list. |
|
1892 |
* |
|
1893 |
* For c code generation, the var1_init_decl_c visitor |
|
1894 |
* would need to access the internals of other classes |
|
1895 |
* (e.g. the simple_spec_init_c). |
|
1896 |
* |
|
1897 |
* We can do this using one of three methods: |
|
1898 |
* 1) Create the abstract syntax tree differently; |
|
1899 |
* 2) Access other classes from within the var1_init_decl_c; |
|
1900 |
* 3) Pass info between the visitors using global variables |
|
1901 |
* only acessible by this class (private vars) |
|
1902 |
* |
|
1903 |
* In 1), the abstract syntax tree would be built so that |
|
1904 |
* var1_init_decl_c would contain direct references to |
|
1905 |
* var1_list_c, to the var type 'INT' and to the initialiser '98' |
|
1906 |
* (as per the example above). |
|
1907 |
* |
|
1908 |
* 2) would have several sub-options to obtain the references |
|
1909 |
* to 'INT' and '98' from within var1_init_decl_c. |
|
1910 |
* In 2a), the var1_init_decl_c would use dynamic casts to determine |
|
1911 |
* the class of spec_init (simple_spec_init_c, subrange_spec_init_c or |
|
1912 |
* enumerated_spec_init_c), and from there obtain the 'INT' and '98' |
|
1913 |
* In 2b) var1_init_decl_c would have one reference for each |
|
1914 |
* simple_spec_init_c, subrange_spec_init_c and enumerated_spec_init_c, |
|
1915 |
* the apropriate one being initialised by the var1_init_decl_c constructor. |
|
1916 |
* Note that the constructor would use dynamic casts. In essence, we |
|
1917 |
* would merely be changing the location of the code with the |
|
1918 |
* dynamic casts. |
|
1919 |
* In 2c) we would use three overloaded constructors for var1_init_decl_c |
|
1920 |
* one each for simple_spec_init_c, etc... This implies |
|
1921 |
* use type specific pointers to each symbol in the bison |
|
1922 |
* parser, instead of simply using a symbol_c * for all symbols; |
|
1923 |
* |
|
1924 |
* In 3), we use two global but private variables with references to |
|
1925 |
* 'INT' and '98', that would be initiliased by the visitors to |
|
1926 |
* simple_spec_init_c, subrange_spec_init_c and enumerated_spec_init_c. |
|
1927 |
* The visitor to var1_list_c would then use the references in the global |
|
1928 |
* variables. |
|
1929 |
* |
|
1930 |
* I (Mario) have chosen to use 3). |
|
1931 |
*/ |
|
1932 |
||
1933 |
/* Start off by setting the current_var_type_symbol and |
|
1934 |
* current_var_init_symbol private variables... |
|
1935 |
*/ |
|
1936 |
update_type_init(symbol->spec_init); |
|
1937 |
||
1938 |
/* now to produce the c equivalent... */ |
|
1939 |
symbol->var1_list->accept(*this); |
|
1940 |
||
1941 |
/* Values no longer in scope, and therefore no longer used. |
|
1942 |
* Make an effort to keep them set to NULL when not in use |
|
1943 |
* in order to catch bugs as soon as possible... |
|
1944 |
*/ |
|
1945 |
void_type_init(); |
|
1946 |
||
1947 |
return NULL; |
|
1948 |
} |
|
1949 |
||
1950 |
||
1951 |
||
1952 |
void *visit(var1_list_c *symbol) {
|
|
1953 |
TRACE("var1_list_c");
|
|
1954 |
declare_variables(symbol); |
|
1955 |
return NULL; |
|
1956 |
} |
|
1957 |
||
1958 |
||
1959 |
||
1960 |
||
1961 |
/* intermediate helper symbol for: |
|
1962 |
* - non_retentive_var_decls |
|
1963 |
* - output_declarations |
|
1964 |
*/ |
|
1965 |
void *visit(var_init_decl_list_c *symbol) {
|
|
1966 |
TRACE("var_init_decl_list_c");
|
|
1967 |
return print_list(symbol); |
|
1968 |
return NULL; |
|
1969 |
} |
|
1970 |
||
1971 |
||
1972 |
/**************************************/ |
|
1973 |
/* B.1.5 - Program organization units */ |
|
1974 |
/**************************************/ |
|
1975 |
/***********************/ |
|
1976 |
/* B 1.5.1 - Functions */ |
|
1977 |
/***********************/ |
|
1978 |
/* The missing function_declaration_c |
|
1979 |
* is handled in derived classes |
|
1980 |
*/ |
|
1981 |
||
1982 |
||
1983 |
||
1984 |
/* intermediate helper symbol for function_declaration */ |
|
1985 |
void *visit(var_declarations_list_c *symbol) {
|
|
1986 |
TRACE("var_declarations_list_c");
|
|
1987 |
return print_list(symbol); |
|
1988 |
} |
|
1989 |
||
1990 |
||
1991 |
void *visit(function_var_decls_c *symbol) {
|
|
1992 |
TRACE("function_var_decls_c");
|
|
1993 |
||
1994 |
if ((wanted_vartype & private_vt) != 0) {
|
|
1995 |
/* |
|
1996 |
// TO DO ... |
|
1997 |
if (symbol->option != NULL) |
|
1998 |
symbol->option->accept(*this); |
|
1999 |
*/ |
|
2000 |
current_vartype = private_vt; |
|
2001 |
symbol->decl_list->accept(*this); |
|
2002 |
current_vartype = none_vt; |
|
2003 |
} |
|
2004 |
return NULL; |
|
2005 |
} |
|
2006 |
||
2007 |
||
2008 |
/* intermediate helper symbol for function_var_decls */ |
|
2009 |
void *visit(var2_init_decl_list_c *symbol) {
|
|
2010 |
TRACE("var2_init_decl_list_c");
|
|
2011 |
print_list(symbol); |
|
2012 |
return NULL; |
|
2013 |
} |
|
2014 |
||
2015 |
||
2016 |
/*****************************/ |
|
2017 |
/* B 1.5.2 - Function Blocks */ |
|
2018 |
/*****************************/ |
|
2019 |
||
2020 |
/* The missing function_block_declaration_c |
|
2021 |
* is handled in derived classes |
|
2022 |
*/ |
|
2023 |
||
2024 |
||
2025 |
/* VAR_TEMP temp_var_decl_list END_VAR */ |
|
2026 |
void *visit(temp_var_decls_c *symbol) {
|
|
2027 |
TRACE("temp_var_decls_c");
|
|
2028 |
if ((wanted_vartype & temp_vt) != 0) {
|
|
2029 |
current_vartype = temp_vt; |
|
2030 |
symbol->var_decl_list->accept(*this); |
|
2031 |
current_vartype = none_vt; |
|
2032 |
} |
|
2033 |
return NULL; |
|
2034 |
} |
|
2035 |
||
2036 |
/* intermediate helper symbol for temp_var_decls */ |
|
2037 |
void *visit(temp_var_decls_list_c *symbol) {
|
|
2038 |
TRACE("temp_var_decls_list_c");
|
|
2039 |
return print_list(symbol); |
|
2040 |
} |
|
2041 |
||
2042 |
/* VAR NON_RETAIN var_init_decl_list END_VAR */ |
|
2043 |
void *visit(non_retentive_var_decls_c *symbol) {
|
|
2044 |
TRACE("non_retentive_var_decls_c");
|
|
2045 |
// TODO ... guarantee the non-retain semantics! |
|
2046 |
if ((wanted_vartype & private_vt) != 0) {
|
|
2047 |
current_vartype = private_vt; |
|
2048 |
symbol->var_decl_list->accept(*this); |
|
2049 |
current_vartype = none_vt; |
|
2050 |
} |
|
2051 |
return NULL; |
|
2052 |
} |
|
2053 |
||
2054 |
||
2055 |
||
2056 |
/**********************/ |
|
2057 |
/* B 1.5.3 - Programs */ |
|
2058 |
/**********************/ |
|
2059 |
/* leave for derived classes... */ |
|
2060 |
||
2061 |
/*********************************************/ |
|
2062 |
/* B.1.6 Sequential function chart elements */ |
|
2063 |
/*********************************************/ |
|
2064 |
||
2065 |
/********************************/ |
|
2066 |
/* B 1.7 Configuration elements */ |
|
2067 |
/********************************/ |
|
2068 |
/* Programs instantiated inside configurations are declared as variables!! */ |
|
2069 |
||
2070 |
/* |
|
2071 |
CONFIGURATION configuration_name |
|
2072 |
optional_global_var_declarations |
|
2073 |
(resource_declaration_list | single_resource_declaration) |
|
2074 |
optional_access_declarations |
|
2075 |
optional_instance_specific_initializations |
|
2076 |
END_CONFIGURATION |
|
2077 |
*/ |
|
2078 |
/* |
|
2079 |
SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused) |
|
2080 |
*/ |
|
2081 |
void *visit(configuration_declaration_c *symbol) {
|
|
2082 |
TRACE("configuration_declaration_c");
|
|
2083 |
||
2084 |
if(symbol->global_var_declarations) |
|
2085 |
symbol->global_var_declarations->accept(*this); // will contain VAR_GLOBAL declarations!! |
|
2086 |
symbol->resource_declarations->accept(*this); // will contain PROGRAM declarations!! |
|
2087 |
return NULL; |
|
2088 |
} |
|
2089 |
||
2090 |
||
2091 |
/* helper symbol for configuration_declaration */ |
|
2092 |
// SYM_LIST(resource_declaration_list_c) |
|
2093 |
void *visit(resource_declaration_list_c *symbol) {
|
|
2094 |
TRACE("resource_declaration_list_c");
|
|
2095 |
||
2096 |
return print_list(symbol); |
|
2097 |
} |
|
2098 |
||
2099 |
/* |
|
2100 |
RESOURCE resource_name ON resource_type_name |
|
2101 |
optional_global_var_declarations |
|
2102 |
single_resource_declaration |
|
2103 |
END_RESOURCE |
|
2104 |
*/ |
|
2105 |
// SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration) |
|
2106 |
void *visit(resource_declaration_c *symbol) {
|
|
2107 |
TRACE("resource_declaration_c");
|
|
|
138
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2108 |
//// Not used anymore. Even resource list are processed as single resource |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2109 |
// if ((wanted_vartype & resource_vt) != 0) {
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2110 |
// s4o.print(s4o.indent_spaces + "struct {\n");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2111 |
// s4o.indent_right(); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2112 |
// |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2113 |
// current_vartype = resource_vt; |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2114 |
// if (NULL != symbol->global_var_declarations) |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2115 |
// symbol->global_var_declarations->accept(*this); // will contain VAR_GLOBAL declarations!! |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2116 |
// if (NULL != symbol->resource_declaration) |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2117 |
// symbol->resource_declaration->accept(*this); // will contain PROGRAM declarations!! |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2118 |
// current_vartype = none_vt; |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2119 |
// |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2120 |
// s4o.indent_left(); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2121 |
// s4o.print(s4o.indent_spaces + "} "); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2122 |
// symbol->resource_name->accept(*this); |
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2123 |
// s4o.print(";\n");
|
|
8b32fd4d0194
Some miscelanous static, extern and pointer status variable changes in C generated code for configuration and resources
etisserant
parents:
128
diff
changeset
|
2124 |
// } |
| 70 | 2125 |
return NULL; |
2126 |
} |
|
2127 |
||
2128 |
/* task_configuration_list program_configuration_list */ |
|
2129 |
// SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list) |
|
2130 |
void *visit(single_resource_declaration_c *symbol) {
|
|
2131 |
TRACE("single_resource_declaration_c");
|
|
2132 |
||
2133 |
if ((wanted_vartype & program_vt) != 0) {
|
|
2134 |
unsigned int previous_vartype = current_vartype; |
|
2135 |
// previous_vartype will be resource_vt |
|
2136 |
current_vartype = program_vt; |
|
2137 |
symbol->program_configuration_list->accept(*this); |
|
2138 |
current_vartype = previous_vartype; |
|
2139 |
} |
|
2140 |
return NULL; |
|
2141 |
} |
|
2142 |
||
2143 |
||
2144 |
/* helper symbol for single_resource_declaration */ |
|
2145 |
// SYM_LIST(task_configuration_list_c) |
|
2146 |
||
2147 |
||
2148 |
/* helper symbol for single_resource_declaration */ |
|
2149 |
/* | program_configuration_list program_configuration ';' */ |
|
2150 |
// SYM_LIST(program_configuration_list_c) |
|
2151 |
void *visit(program_configuration_list_c *symbol) {
|
|
2152 |
TRACE("program_configuration_list_c");
|
|
2153 |
||
2154 |
return print_list(symbol); |
|
2155 |
} |
|
2156 |
||
2157 |
/* helper symbol for |
|
2158 |
* - access_path |
|
2159 |
* - instance_specific_init |
|
2160 |
*/ |
|
2161 |
// SYM_LIST(any_fb_name_list_c) |
|
2162 |
||
2163 |
/* [resource_name '.'] global_var_name ['.' structure_element_name] */ |
|
2164 |
// SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused) |
|
2165 |
||
2166 |
/* prev_declared_program_name '.' symbolic_variable */ |
|
2167 |
// SYM_REF2(program_output_reference_c, program_name, symbolic_variable) |
|
2168 |
||
2169 |
/* TASK task_name task_initialization */ |
|
2170 |
// SYM_REF2(task_configuration_c, task_name, task_initialization) |
|
2171 |
||
2172 |
/* '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */
|
|
2173 |
// SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused) |
|
2174 |
||
2175 |
/* PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */
|
|
2176 |
// SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused) |
|
2177 |
private: |
|
2178 |
/* a helper function to the program_configuration_c visitor... */ |
|
2179 |
void program_constructor_call(program_configuration_c *symbol) {
|
|
2180 |
program_declaration_c *p_decl = program_type_symtable.find_value(symbol->program_type_name); |
|
2181 |
||
2182 |
if (p_decl == program_type_symtable.end_value()) |
|
2183 |
/* should never occur. The program being called MUST be in the symtable... */ |
|
2184 |
ERROR; |
|
2185 |
||
2186 |
symbol->program_name->accept(*this); |
|
2187 |
s4o.print("(");
|
|
2188 |
||
2189 |
/* loop through each function parameter, find the value we should pass |
|
2190 |
* to it, and then output the c equivalent... |
|
2191 |
*/ |
|
2192 |
function_param_iterator_c fp_iterator(p_decl); |
|
2193 |
function_call_param_iterator_c function_call_param_iterator(symbol); |
|
2194 |
identifier_c *param_name; |
|
2195 |
nv->push("", ", ");
|
|
2196 |
for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) {
|
|
2197 |
||
2198 |
symbol_c *param_type = fp_iterator.param_type(); |
|
2199 |
if (param_type == NULL) ERROR; |
|
2200 |
||
2201 |
function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction(); |
|
2202 |
||
2203 |
#if 0 |
|
2204 |
/* Get the value from a foo(<param_name> = <param_value>) style call */ |
|
2205 |
symbol_c *param_value = function_call_param_iterator.search(param_name); |
|
2206 |
#endif |
|
2207 |
||
2208 |
switch (param_direction) {
|
|
2209 |
case function_param_iterator_c::direction_in: |
|
2210 |
case function_param_iterator_c::direction_out: |
|
2211 |
case function_param_iterator_c::direction_inout: |
|
2212 |
/* ignore them all!! */ |
|
2213 |
break; |
|
2214 |
||
2215 |
case function_param_iterator_c::direction_extref: |
|
2216 |
#if 0 |
|
2217 |
if (param_value == NULL) |
|
2218 |
/* This is illegal in ST and IL languages. |
|
2219 |
* All variables declared in a VAR_EXTERNAL __must__ |
|
2220 |
* be initialised to reference a specific VAR_GLOBAL variable!! |
|
2221 |
* |
|
2222 |
* The semantic checker should have caught this, we check again just the |
|
2223 |
* same (especially since the semantic checker has not yet been written!). |
|
2224 |
*/ |
|
2225 |
ERROR; |
|
2226 |
s4o.print(nv->get()); |
|
2227 |
s4o.print("&");
|
|
2228 |
param_value->accept(*this); |
|
2229 |
#endif |
|
2230 |
break; |
|
2231 |
#if 0 |
|
2232 |
if (param_value == NULL) {
|
|
2233 |
/* no parameter value given, so we pass a previously declared temporary variable. */ |
|
2234 |
std::string *temp_var_name = temp_var_name_factory.new_name(); |
|
2235 |
s4o.print(*temp_var_name); |
|
2236 |
delete temp_var_name; |
|
2237 |
} else {
|
|
2238 |
param_value->accept(*this); |
|
2239 |
} |
|
2240 |
#endif |
|
2241 |
break; |
|
2242 |
} /* switch */ |
|
2243 |
} /* for(...) */ |
|
2244 |
||
2245 |
// symbol->parameter_assignment->accept(*this); |
|
2246 |
s4o.print(")");
|
|
2247 |
nv->pop(); |
|
2248 |
return; |
|
2249 |
} |
|
2250 |
||
2251 |
||
2252 |
public: |
|
2253 |
void *visit(program_configuration_c *symbol) {
|
|
2254 |
TRACE("program_configuration_c");
|
|
2255 |
||
2256 |
/* now to produce the c equivalent... */ |
|
2257 |
switch (wanted_varformat) {
|
|
2258 |
case local_vf: |
|
2259 |
case localinit_vf: |
|
2260 |
s4o.print(s4o.indent_spaces); |
|
2261 |
symbol->program_type_name->accept(*this); |
|
2262 |
s4o.print(" ");
|
|
2263 |
symbol->program_name->accept(*this); |
|
2264 |
if (wanted_varformat == localinit_vf) {
|
|
2265 |
// TODO... |
|
2266 |
// program_call(symbol); |
|
2267 |
} |
|
2268 |
s4o.print(";\n");
|
|
2269 |
break; |
|
2270 |
||
2271 |
case constructorinit_vf: |
|
2272 |
s4o.print(nv->get()); |
|
2273 |
program_constructor_call(symbol); |
|
2274 |
/* |
|
2275 |
symbol->program_name->accept(*this); |
|
2276 |
s4o.print("(");
|
|
2277 |
symbol->prog_conf_elements->accept(*this); |
|
2278 |
nv->pop(); |
|
2279 |
s4o.print(")");
|
|
2280 |
*/ |
|
2281 |
break; |
|
2282 |
||
2283 |
default: |
|
2284 |
ERROR; /* not supported, and not needed either... */ |
|
2285 |
} |
|
2286 |
||
2287 |
return NULL; |
|
2288 |
} |
|
2289 |
||
2290 |
||
2291 |
||
2292 |
/* prog_conf_elements ',' prog_conf_element */ |
|
2293 |
//SYM_LIST(prog_conf_elements_c) |
|
2294 |
void *visit(prog_conf_elements_c *symbol) {
|
|
2295 |
TRACE("prog_conf_elements_c");
|
|
2296 |
||
2297 |
return print_list(symbol); |
|
2298 |
} |
|
2299 |
||
2300 |
/* fb_name WITH task_name */ |
|
2301 |
//SYM_REF2(fb_task_c, fb_name, task_name) |
|
2302 |
void *visit(fb_task_c *symbol) {
|
|
2303 |
TRACE("fb_task_c");
|
|
2304 |
||
2305 |
/* TODO... |
|
2306 |
* |
|
2307 |
* NOTE: Not yet supported... |
|
2308 |
* We do not support allocating specific function blocks declared |
|
2309 |
* inside a program to be executed by a different task from the one |
|
2310 |
* already executing the program itself. |
|
2311 |
* This is mostly because I (Mario) simply do not understand the |
|
2312 |
* semantics the standard expects us to implement in this case. It is all |
|
2313 |
* very confusing, and very poorly defined in the standard! |
|
2314 |
*/ |
|
2315 |
ERROR; |
|
2316 |
return NULL; |
|
2317 |
} |
|
2318 |
||
2319 |
||
2320 |
||
2321 |
||
2322 |
||
2323 |
||
2324 |
||
2325 |
||
2326 |
||
2327 |
||
2328 |
||
2329 |
||
2330 |
||
2331 |
||
2332 |
||
2333 |
||
2334 |
||
2335 |
||
2336 |
||
2337 |
||
2338 |
||
2339 |
||
2340 |
||
2341 |
||
2342 |
||
2343 |
||
2344 |
||
2345 |
/* any_symbolic_variable ASSIGN prog_data_source */ |
|
2346 |
// SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source) |
|
2347 |
void *visit(prog_cnxn_assign_c *symbol) {
|
|
2348 |
TRACE("prog_cnxn_assign_c");
|
|
2349 |
||
2350 |
/* TODO... */ |
|
2351 |
return NULL; |
|
2352 |
} |
|
2353 |
||
2354 |
/* any_symbolic_variable SENDTO data_sink */ |
|
2355 |
// SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source) |
|
2356 |
void *visit(prog_cnxn_sendto_c *symbol) {
|
|
2357 |
TRACE("prog_cnxn_sendto_c");
|
|
2358 |
||
2359 |
/* TODO... */ |
|
2360 |
return NULL; |
|
2361 |
} |
|
2362 |
||
2363 |
#if 0 |
|
2364 |
/* VAR_CONFIG instance_specific_init_list END_VAR_BOGUS */ |
|
2365 |
SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused) |
|
2366 |
||
2367 |
/* helper symbol for instance_specific_initializations */ |
|
2368 |
SYM_LIST(instance_specific_init_list_c) |
|
2369 |
||
2370 |
/* resource_name '.' program_name '.' {fb_name '.'}
|
|
2371 |
((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization)) |
|
2372 |
*/ |
|
2373 |
SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization) |
|
2374 |
||
2375 |
/* helper symbol for instance_specific_init */ |
|
2376 |
/* function_block_type_name ':=' structure_initialization */ |
|
2377 |
SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization) |
|
2378 |
||
2379 |
#endif |
|
2380 |
||
2381 |
||
2382 |
||
2383 |
||
2384 |
/****************************************/ |
|
2385 |
/* B.2 - Language IL (Instruction List) */ |
|
2386 |
/****************************************/ |
|
2387 |
/***********************************/ |
|
2388 |
/* B 2.1 Instructions and Operands */ |
|
2389 |
/***********************************/ |
|
2390 |
/* leave for derived classes... */ |
|
2391 |
||
2392 |
/*******************/ |
|
2393 |
/* B 2.2 Operators */ |
|
2394 |
/*******************/ |
|
2395 |
/* leave for derived classes... */ |
|
2396 |
||
2397 |
||
2398 |
/***************************************/ |
|
2399 |
/* B.3 - Language ST (Structured Text) */ |
|
2400 |
/***************************************/ |
|
2401 |
/***********************/ |
|
2402 |
/* B 3.1 - Expressions */ |
|
2403 |
/***********************/ |
|
2404 |
/* leave for derived classes... */ |
|
2405 |
||
2406 |
/********************/ |
|
2407 |
/* B 3.2 Statements */ |
|
2408 |
/********************/ |
|
2409 |
/* leave for derived classes... */ |
|
2410 |
||
2411 |
/*********************************/ |
|
2412 |
/* B 3.2.1 Assignment Statements */ |
|
2413 |
/*********************************/ |
|
2414 |
/* leave for derived classes... */ |
|
2415 |
||
2416 |
/*****************************************/ |
|
2417 |
/* B 3.2.2 Subprogram Control Statements */ |
|
2418 |
/*****************************************/ |
|
2419 |
/* leave for derived classes... */ |
|
2420 |
||
2421 |
/********************************/ |
|
2422 |
/* B 3.2.3 Selection Statements */ |
|
2423 |
/********************************/ |
|
2424 |
/* leave for derived classes... */ |
|
2425 |
||
2426 |
/********************************/ |
|
2427 |
/* B 3.2.4 Iteration Statements */ |
|
2428 |
/********************************/ |
|
2429 |
/* leave for derived classes... */ |
|
2430 |
||
2431 |
||
2432 |
||
2433 |
}; /* generate_c_vardecl_c */ |
|
2434 |
||
2435 |
||
2436 |