lbessard@70: /*
Edouard@279: * matiec - a compiler for the programming languages defined in IEC 61131-3
lbessard@70: *
Edouard@279: * Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt)
Edouard@279: * Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
lbessard@70: *
Edouard@279: * This program is free software: you can redistribute it and/or modify
Edouard@279: * it under the terms of the GNU General Public License as published by
Edouard@279: * the Free Software Foundation, either version 3 of the License, or
Edouard@279: * (at your option) any later version.
Edouard@279: *
Edouard@279: * This program is distributed in the hope that it will be useful,
Edouard@279: * but WITHOUT ANY WARRANTY; without even the implied warranty of
Edouard@279: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Edouard@279: * GNU General Public License for more details.
Edouard@279: *
Edouard@279: * You should have received a copy of the GNU General Public License
Edouard@279: * along with this program. If not, see .
Edouard@279: *
lbessard@70: *
lbessard@70: * This code is made available on the understanding that it will not be
lbessard@70: * used in safety-critical situations without a full and competent review.
lbessard@70: */
lbessard@70:
msousa@592: #include // required for std::numeric_limits
msousa@592:
laurent@221: class initialization_analyzer_c: public null_visitor_c {
laurent@221: public:
Laurent@706: typedef enum {
Laurent@706: simple_it,
Laurent@706: array_it,
Laurent@706: struct_it
Laurent@706: } initialization_type_t;
laurent@221:
laurent@221: private:
laurent@221:
Laurent@706: initialization_type_t current_type;
laurent@221:
laurent@221: public:
Laurent@706: initialization_analyzer_c(symbol_c* symbol) {
Laurent@706: current_type = simple_it;
laurent@221: symbol->accept(*this);
Laurent@706: }
Laurent@706: ~initialization_analyzer_c(void) {}
Laurent@706:
Laurent@706: initialization_type_t get_initialization_type(void) {
Laurent@706: return current_type;
Laurent@706: }
Laurent@706:
Laurent@706: void *visit(array_initial_elements_list_c *symbol) {
laurent@221: current_type = array_it;
laurent@221: return NULL;
Laurent@706: }
laurent@221:
laurent@221: void *visit(structure_element_initialization_list_c *symbol) {
laurent@221: current_type = struct_it;
laurent@221: return NULL;
laurent@221: }
laurent@221: };
lbessard@70:
lbessard@98: class generate_c_array_initialization_c: public generate_c_typedecl_c {
lbessard@98:
lbessard@98: public:
lbessard@98: typedef enum {
lbessard@98: none_am,
laurent@237: arraysize_am,
laurent@237: typedecl_am,
laurent@237: initializationvalue_am
lbessard@98: } arrayinitialization_mode_t;
lbessard@98:
lbessard@98: arrayinitialization_mode_t current_mode;
lbessard@98:
lbessard@160: symbol_c* array_base_type;
lbessard@98: symbol_c* array_default_value;
lbessard@160: symbol_c* array_default_initialization;
lbessard@98:
lbessard@98: private:
lbessard@160: int current_dimension;
msousa@592: unsigned long long int array_size;
msousa@592: unsigned long long int defined_values_count;
msousa@592: unsigned long long int current_initialization_count;
lbessard@98:
lbessard@98: public:
lbessard@98: generate_c_array_initialization_c(stage4out_c *s4o_ptr): generate_c_typedecl_c(s4o_ptr) {}
lbessard@98: ~generate_c_array_initialization_c(void) {}
lbessard@98:
laurent@237: void init_array_size(symbol_c *array_specification) {
lbessard@160: array_size = 1;
lbessard@160: defined_values_count = 0;
lbessard@160: current_initialization_count = 0;
lbessard@160: array_base_type = array_default_value = array_default_initialization = NULL;
lbessard@160:
laurent@237: current_mode = arraysize_am;
lbessard@160: array_specification->accept(*this);
lbessard@160: }
lbessard@160:
Laurent@635: void set_array_default_initialisation(symbol_c *array_initialization) {
Laurent@635: array_default_initialization = array_initialization;
Laurent@635: }
Laurent@635:
lbessard@98: void init_array(symbol_c *var1_list, symbol_c *array_specification, symbol_c *array_initialization) {
lbessard@98: int i;
lbessard@98:
laurent@237: init_array_size(array_specification);
lbessard@98:
lbessard@98: s4o.print("\n");
lbessard@98: s4o.print(s4o.indent_spaces + "{\n");
lbessard@98: s4o.indent_right();
lbessard@98: s4o.print(s4o.indent_spaces);
laurent@221: s4o.print("static const ");
laurent@237:
laurent@237: current_mode = typedecl_am;
lbessard@98: array_specification->accept(*this);
lbessard@98: s4o.print(" temp = ");
laurent@237:
lbessard@160: init_array_values(array_initialization);
laurent@237:
lbessard@98: s4o.print(";\n");
lbessard@98: var1_list->accept(*this);
lbessard@98: s4o.indent_left();
lbessard@98: s4o.print(s4o.indent_spaces + "}");
lbessard@98: }
lbessard@160:
lbessard@160: void init_array_values(symbol_c *array_initialization) {
laurent@237: s4o.print("{{");
laurent@237:
laurent@237: current_mode = initializationvalue_am;
lbessard@160: array_initialization->accept(*this);
laurent@237:
lbessard@160: if (array_default_initialization != NULL && defined_values_count < array_size)
lbessard@160: array_default_initialization->accept(*this);
lbessard@160: if (defined_values_count < array_size) {
msousa@592: for (unsigned long long int i = defined_values_count; i < array_size; i++) {
lbessard@160: if (defined_values_count > 0)
laurent@221: s4o.print(",");
lbessard@160: array_default_value->accept(*this);
lbessard@160: defined_values_count++;
lbessard@160: }
lbessard@160: }
laurent@237:
laurent@237: s4o.print("}}");
lbessard@160: }
lbessard@160:
lbessard@98: void *visit(identifier_c *type_name) {
lbessard@98: symbol_c *type_decl;
lbessard@98: switch (current_mode) {
laurent@237: case arraysize_am:
lbessard@98: /* look up the type declaration... */
lbessard@98: type_decl = type_symtable.find_value(type_name);
lbessard@98: if (type_decl == type_symtable.end_value())
lbessard@98: /* Type declaration not found!! */
lbessard@98: ERROR;
lbessard@98: type_decl->accept(*this);
lbessard@98: break;
lbessard@98: default:
lbessard@98: print_token(type_name);
lbessard@98: break;
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@98: void *visit(var1_list_c *symbol) {
lbessard@98: int i, j;
lbessard@98:
lbessard@98: for (i = 0; i < symbol->n; i++) {
lbessard@98: s4o.print(s4o.indent_spaces);
laurent@221: s4o.print(SET_VAR);
laurent@221: s4o.print("(");
lbessard@98: print_variable_prefix();
laurent@392: s4o.print(",");
lbessard@98: symbol->elements[i]->accept(*this);
laurent@334: s4o.print(",temp);\n");
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@98: /********************************/
lbessard@98: /* B 1.3.3 - Derived data types */
lbessard@98: /********************************/
lbessard@98:
lbessard@160: /* array_specification [ASSIGN array_initialization] */
lbessard@160: /* array_initialization may be NULL ! */
lbessard@160: void *visit(array_spec_init_c *symbol) {
lbessard@160: switch (current_mode) {
laurent@237: case arraysize_am:
lbessard@160: array_default_initialization = symbol->array_initialization;
lbessard@160: break;
lbessard@160: default:
lbessard@160: break;
lbessard@160: }
lbessard@160: symbol->array_specification->accept(*this);
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@98: /* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */
lbessard@98: void *visit(array_specification_c *symbol) {
laurent@377: identifier_c* type_name;
lbessard@98: switch (current_mode) {
laurent@237: case arraysize_am:
laurent@377: symbol->array_subrange_list->accept(*this);
lbessard@160: array_base_type = symbol->non_generic_type_name;
lbessard@98: array_default_value = (symbol_c *)symbol->non_generic_type_name->accept(*type_initial_value_c::instance());;
lbessard@160: if (array_default_value == NULL) ERROR;
lbessard@98: break;
laurent@377: case typedecl_am:
laurent@377: s4o.print("__");
laurent@377: symbol->non_generic_type_name->accept(*this);
laurent@377: symbol->array_subrange_list->accept(*this);
laurent@377: break;
lbessard@98: default:
laurent@377: symbol->array_subrange_list->accept(*this);
lbessard@98: break;
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@98: /* signed_integer DOTDOT signed_integer */
lbessard@98: //SYM_REF2(subrange_c, lower_limit, upper_limit)
lbessard@98: void *visit(subrange_c *symbol) {
lbessard@98: switch (current_mode) {
laurent@237: case arraysize_am:
msousa@592: /* res = a * b; ---> Check for overflow by pre-condition: If (UINT_MAX / a) < b => overflow! */
msousa@592: if ((std::numeric_limits< unsigned long long int >::max() / array_size) < symbol->dimension)
msousa@592: STAGE4_ERROR(symbol, symbol, "The array containing this subrange has a total number of elements larger than the maximum currently supported (%llu).",
msousa@592: std::numeric_limits< unsigned long long int >::max());
msousa@592: array_size *= symbol->dimension;
laurent@377: break;
laurent@377: case typedecl_am:
laurent@377: s4o.print("_");
msousa@594: s4o.print(symbol->dimension);
lbessard@98: break;
lbessard@98: default:
lbessard@98: break;
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@98: /* helper symbol for array_initialization */
lbessard@98: /* array_initial_elements_list ',' array_initial_elements */
lbessard@98: void *visit(array_initial_elements_list_c *symbol) {
lbessard@98: switch (current_mode) {
lbessard@98: case initializationvalue_am:
lbessard@160: current_initialization_count = 0;
lbessard@160: for (int i = 0; i < symbol->n; i++) {
lbessard@160: if (current_initialization_count >= defined_values_count) {
lbessard@160: if (defined_values_count >= array_size)
lbessard@160: ERROR;
lbessard@160: if (defined_values_count > 0)
laurent@221: s4o.print(",");
lbessard@160: symbol->elements[i]->accept(*this);
lbessard@160: defined_values_count++;
lbessard@160: }
lbessard@160: else {
lbessard@160: array_initial_elements_c *array_initial_element = dynamic_cast(symbol->elements[i]);
lbessard@160:
laurent@221: if (array_initial_element != NULL) {
Laurent@706: symbol->elements[i]->accept(*this);
laurent@221: }
lbessard@160: }
lbessard@160: current_initialization_count++;
lbessard@98: }
lbessard@98: break;
lbessard@98: default:
lbessard@98: break;
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@98: /* integer '(' [array_initial_element] ')' */
lbessard@98: /* array_initial_element may be NULL ! */
lbessard@98: void *visit(array_initial_elements_c *symbol) {
msousa@596: unsigned long long int initial_element_count;
msousa@596:
msousa@596: /* This code assumes that unsigned long long int is >= uint64_t */
msousa@596: if (std::numeric_limits< uint64_t >::max() > std::numeric_limits< unsigned long long int >::max())
Laurent@706: ERROR_MSG("Assertion (sizeof(uint64_t) > sizeof(unsigned long long int)) failed! Compiler cannot execute correctly on the current platform!");
lbessard@98:
lbessard@98: switch (current_mode) {
lbessard@98: case initializationvalue_am:
msousa@596: if (VALID_CVALUE( int64, symbol->integer) && (GET_CVALUE( int64, symbol->integer) >= 0))
msousa@596: initial_element_count = GET_CVALUE( int64, symbol->integer);
msousa@596: else if (VALID_CVALUE(uint64, symbol->integer))
msousa@596: initial_element_count = GET_CVALUE(uint64, symbol->integer);
msousa@596: else ERROR;
msousa@596:
lbessard@160: if (current_initialization_count < defined_values_count) {
msousa@592: unsigned long long int temp_element_number = 0;
msousa@592: unsigned long long int diff = defined_values_count - current_initialization_count;
msousa@596: if (diff <= initial_element_count)
msousa@596: temp_element_number = initial_element_count - diff;
msousa@596: current_initialization_count += initial_element_count - 1;
msousa@596: initial_element_count = temp_element_number;
msousa@596: if (initial_element_count > 0) {
lbessard@160: defined_values_count++;
laurent@221: s4o.print(",");
lbessard@160: }
lbessard@160: }
lbessard@160: else
msousa@596: current_initialization_count += initial_element_count - 1;
msousa@596: if (defined_values_count + initial_element_count > array_size)
lbessard@160: ERROR;
msousa@596: for (unsigned long long int i = 0; i < initial_element_count; i++) {
lbessard@98: if (i > 0)
laurent@221: s4o.print(",");
laurent@221: if (symbol->array_initial_element != NULL) {
lbessard@98: symbol->array_initial_element->accept(*this);
laurent@221: }
laurent@221: else {
lbessard@98: array_default_value->accept(*this);
laurent@221: }
lbessard@98: }
msousa@596: if (initial_element_count > 1)
msousa@596: defined_values_count += initial_element_count - 1;
lbessard@98: break;
lbessard@98: default:
lbessard@98: break;
lbessard@98: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@160: void *visit(structure_element_initialization_list_c *symbol);
lbessard@98: };
lbessard@70:
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70: /***********************************************************************/
lbessard@70:
lbessard@160: /* given a structure_element_declaration_list_c, iterate
lbessard@160: * through each element, returning the name
lbessard@160: * of each element...structure_element_iterator_c
lbessard@160: */
lbessard@160: class structure_element_iterator_c : public null_visitor_c {
lbessard@160:
lbessard@160: private:
lbessard@160: /* a pointer to the structure_element_declaration_list_c
lbessard@160: * currently being analysed.
lbessard@160: */
lbessard@160: symbol_c *type_decl;
lbessard@160: int next_element, element_count;
lbessard@160: identifier_c *current_element_name;
lbessard@160: symbol_c *current_element_type;
lbessard@160: symbol_c *current_element_default_value;
lbessard@160:
lbessard@160:
lbessard@160: public:
lbessard@160: /* start off at the first parameter once again... */
lbessard@160: void reset(void) {
lbessard@160: next_element = element_count = 0;
lbessard@160: current_element_name = NULL;
lbessard@160: current_element_type = current_element_default_value = NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /* initialise the iterator object.
lbessard@160: * We must be given a reference to the function declaration
lbessard@160: * that will be analysed...
lbessard@160: */
lbessard@160: structure_element_iterator_c(symbol_c *type_decl) {
lbessard@160: this->type_decl = type_decl;
lbessard@160: reset();
lbessard@160: }
lbessard@160:
lbessard@160: /* Skip to the next element. After object creation,
lbessard@160: * the object references on
lbessard@160: * element _before_ the first, so
lbessard@160: * this function must be called once to get the object to
lbessard@160: * reference the first element...
lbessard@160: *
lbessard@160: * Returns the element's name!
lbessard@160: */
lbessard@160: identifier_c *next(void) {
lbessard@160: void *res;
lbessard@160: identifier_c *identifier;
lbessard@160: element_count = 0;
lbessard@160: next_element++;
lbessard@160: res = type_decl->accept(*this);
lbessard@160: if (res != NULL) {
lbessard@160: symbol_c *sym = (symbol_c *)res;
lbessard@160: identifier = dynamic_cast(sym);
lbessard@160: if (identifier == NULL)
lbessard@160: ERROR;
lbessard@160: }
lbessard@160: else
lbessard@160: return NULL;
lbessard@160:
lbessard@160: current_element_name = identifier;
lbessard@160: return current_element_name;
lbessard@160: }
lbessard@160:
lbessard@160: /* Returns the currently referenced element's default value,
lbessard@160: * or NULL if none is specified in the structure declaration itself.
lbessard@160: */
lbessard@160: symbol_c *default_value(void) {
lbessard@160: return current_element_default_value;
lbessard@160: }
lbessard@160:
lbessard@160: /* Returns the currently referenced element's type name. */
lbessard@160: symbol_c *element_type(void) {
lbessard@160: return current_element_type;
lbessard@160: }
lbessard@160:
lbessard@160: /********************************/
lbessard@160: /* B 1.3.3 - Derived data types */
lbessard@160: /********************************/
lbessard@160:
lbessard@160: /* helper symbol for structure_declaration */
lbessard@160: /* structure_element_declaration_list structure_element_declaration ';' */
lbessard@160: void *visit(structure_element_declaration_list_c *symbol) {
lbessard@160: void *res;
lbessard@160: for (int i = 0; i < symbol->n; i++) {
lbessard@160: res = symbol->elements[i]->accept(*this);
lbessard@160: if (res != NULL)
lbessard@160: return res;
lbessard@160: }
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /* structure_element_name ':' *_spec_init */
lbessard@160: void *visit(structure_element_declaration_c *symbol) {
lbessard@160: element_count++;
lbessard@160: if (next_element == element_count) {
lbessard@160: current_element_default_value = spec_init_sperator_c::get_init(symbol->spec_init);
lbessard@160: current_element_type = spec_init_sperator_c::get_spec(symbol->spec_init);
Laurent@635: if (current_element_type == NULL) ERROR;
lbessard@160: return symbol->structure_element_name;
lbessard@160: }
lbessard@160: /* not yet the desired element... */
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: };
lbessard@160:
lbessard@160: /*
lbessard@160: * Structure init element iterator.
lbessard@160: * It will search through the elements of a structure initialization
lbessard@160: */
lbessard@160: class structure_init_element_iterator_c : public null_visitor_c {
lbessard@160: private:
lbessard@160: /* a pointer to the structure initialization
lbessard@160: * currently being analysed.
lbessard@160: */
lbessard@160: symbol_c *structure_initialization;
lbessard@160: identifier_c *search_element_name;
lbessard@160:
lbessard@160: public:
lbessard@160: /* initialise the iterator object.
lbessard@160: * We must be given a reference to the structure initialization
lbessard@160: * that will be analysed...
lbessard@160: */
lbessard@160: structure_init_element_iterator_c(symbol_c *structure_initialization) {
lbessard@160: this->structure_initialization = structure_initialization;
lbessard@160: search_element_name = NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /* Search for the value passed to the element named ... */
lbessard@160: symbol_c *search(symbol_c *element_name) {
lbessard@160: if (NULL == element_name) ERROR;
lbessard@160: search_element_name = dynamic_cast(element_name);
lbessard@160: if (NULL == search_element_name) ERROR;
lbessard@160: void *res = structure_initialization->accept(*this);
lbessard@160: return (symbol_c *)res;
lbessard@160: }
lbessard@160:
lbessard@160: /* helper symbol for structure_initialization */
lbessard@160: /* structure_element_initialization_list ',' structure_element_initialization */
lbessard@160: void *visit(structure_element_initialization_list_c *symbol) {
lbessard@160: void *res;
lbessard@160: for (int i = 0; i < symbol->n; i++) {
lbessard@160: res = symbol->elements[i]->accept(*this);
lbessard@160: if (res != NULL)
lbessard@160: return res;
lbessard@160: }
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /* structure_element_name ASSIGN value */
lbessard@160: void *visit(structure_element_initialization_c *symbol) {
lbessard@160: identifier_c *element_name = dynamic_cast(symbol->structure_element_name);
lbessard@160:
lbessard@160: if (element_name == NULL) ERROR;
lbessard@160:
lbessard@160: if (strcasecmp(search_element_name->value, element_name->value) == 0)
lbessard@160: /* FOUND! This is the same element!! */
lbessard@160: return (void *)symbol->value;
lbessard@160: return NULL;
lbessard@160: }
lbessard@160: };
lbessard@160:
lbessard@160: class generate_c_structure_initialization_c: public generate_c_typedecl_c {
lbessard@160:
lbessard@160: public:
lbessard@160: typedef enum {
lbessard@160: none_sm,
laurent@237: initdefault_sm,
lbessard@160: typedecl_sm,
laurent@237: initializationvalue_sm
lbessard@160: } structureinitialization_mode_t;
lbessard@160:
lbessard@160: structureinitialization_mode_t current_mode;
lbessard@160:
lbessard@160: private:
lbessard@160: symbol_c* structure_type_decl;
lbessard@160: symbol_c* current_element_type;
Laurent@635: symbol_c* current_element_default_value;
lbessard@160:
lbessard@160: public:
lbessard@160: generate_c_structure_initialization_c(stage4out_c *s4o_ptr): generate_c_typedecl_c(s4o_ptr) {}
lbessard@160: ~generate_c_structure_initialization_c(void) {}
lbessard@160:
lbessard@160: void init_structure_default(symbol_c *structure_type_name) {
lbessard@160: structure_type_decl = NULL;
lbessard@160: current_element_type = NULL;
Laurent@635: current_element_default_value = NULL;
lbessard@160:
laurent@237: current_mode = initdefault_sm;
lbessard@160: structure_type_name->accept(*this);
lbessard@160: }
lbessard@160:
lbessard@160: void init_structure(symbol_c *var1_list, symbol_c *structure_type_name, symbol_c *structure_initialization) {
lbessard@160: int i;
lbessard@160:
lbessard@160: init_structure_default(structure_type_name);
lbessard@160:
lbessard@160: s4o.print("\n");
lbessard@160: s4o.print(s4o.indent_spaces + "{\n");
lbessard@160: s4o.indent_right();
lbessard@160: s4o.print(s4o.indent_spaces);
laurent@221: s4o.print("static const ");
laurent@237:
laurent@237: current_mode = typedecl_sm;
lbessard@160: structure_type_name->accept(*this);
laurent@237:
lbessard@160: s4o.print(" temp = ");
laurent@237:
laurent@237: init_structure_values(structure_initialization);
laurent@237:
lbessard@160: s4o.print(";\n");
lbessard@160: var1_list->accept(*this);
lbessard@160: s4o.indent_left();
lbessard@160: s4o.print(s4o.indent_spaces + "}");
lbessard@160: }
lbessard@160:
laurent@237: void init_structure_values(symbol_c *structure_initialization) {
laurent@237: current_mode = initializationvalue_sm;
laurent@237: structure_initialization->accept(*this);
laurent@237: }
laurent@237:
lbessard@160: void *visit(identifier_c *type_name) {
lbessard@160: symbol_c *type_decl;
lbessard@160: switch (current_mode) {
laurent@237: case initdefault_sm:
lbessard@160: /* look up the type declaration... */
lbessard@160: type_decl = type_symtable.find_value(type_name);
lbessard@160: if (type_decl == type_symtable.end_value())
lbessard@160: /* Type declaration not found!! */
lbessard@160: ERROR;
lbessard@160: type_decl->accept(*this);
lbessard@160: break;
lbessard@160: default:
lbessard@160: print_token(type_name);
lbessard@160: break;
lbessard@160: }
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: void *visit(var1_list_c *symbol) {
lbessard@160: int i, j;
lbessard@160:
lbessard@160: for (i = 0; i < symbol->n; i++) {
lbessard@160: s4o.print(s4o.indent_spaces);
laurent@221: s4o.print(SET_VAR);
laurent@221: s4o.print("(");
laurent@226: print_variable_prefix();
laurent@392: s4o.print(",");
lbessard@160: symbol->elements[i]->accept(*this);
laurent@221: s4o.print(",temp);\n");
lbessard@160: }
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /********************************/
lbessard@160: /* B 1.3.3 - Derived data types */
lbessard@160: /********************************/
lbessard@160:
lbessard@160: /* helper symbol for structure_declaration */
lbessard@160: /* structure_element_declaration_list structure_element_declaration ';' */
lbessard@160: void *visit(structure_element_declaration_list_c *symbol) {
lbessard@160: switch (current_mode) {
laurent@237: case initdefault_sm:
lbessard@160: structure_type_decl = (symbol_c *)symbol;
lbessard@160: break;
lbessard@160: default:
lbessard@160: break;
lbessard@160: }
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /* helper symbol for structure_initialization */
lbessard@160: /* structure_element_initialization_list ',' structure_element_initialization */
lbessard@160: void *visit(structure_element_initialization_list_c *symbol) {
lbessard@160: s4o.print("{");
lbessard@160: structure_element_iterator_c structure_iterator(structure_type_decl);
lbessard@160:
lbessard@160: identifier_c *element_name;
lbessard@160: structure_init_element_iterator_c structure_init_element_iterator(symbol);
lbessard@160: for(int i = 1; (element_name = structure_iterator.next()) != NULL; i++) {
lbessard@160: if (i > 1)
laurent@221: s4o.print(",");
lbessard@160:
Laurent@635: current_element_type = structure_iterator.element_type();
Laurent@635: if (current_element_type == NULL) ERROR;
Laurent@635:
Laurent@635: /* Check whether default value specified in structure declaration...*/
Laurent@635: current_element_default_value = structure_iterator.default_value();
Laurent@635:
lbessard@160: /* Get the value from an initialization */
lbessard@160: symbol_c *element_value = structure_init_element_iterator.search(element_name);
lbessard@160:
lbessard@160: if (element_value == NULL) {
lbessard@160: /* No value given for parameter, so we must use the default... */
Laurent@635: element_value = current_element_default_value;
lbessard@160: }
lbessard@160:
lbessard@160: if (element_value == NULL) {
lbessard@160: /* If not, get the default value of this variable's type */
lbessard@160: element_value = (symbol_c *)current_element_type->accept(*type_initial_value_c::instance());
lbessard@160: }
lbessard@160:
lbessard@160: if (element_value == NULL) ERROR;
lbessard@160:
laurent@221: initialization_analyzer_c initialization_analyzer(element_value);
lbessard@164:
laurent@221: if (initialization_analyzer.get_initialization_type() == initialization_analyzer_c::struct_it) {
lbessard@164: generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
lbessard@164: structure_initialization->init_structure_default(current_element_type);
laurent@237: structure_initialization->init_structure_values(element_value);
lbessard@164: delete structure_initialization;
lbessard@164: }
laurent@221: else {
lbessard@164: element_value->accept(*this);
laurent@221: }
lbessard@160: }
lbessard@160: s4o.print("}");
lbessard@160: return NULL;
lbessard@160: }
lbessard@164:
lbessard@160: /* helper symbol for array_initialization */
lbessard@160: /* array_initial_elements_list ',' array_initial_elements */
lbessard@160: void *visit(array_initial_elements_list_c *symbol) {
lbessard@160: generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o);
laurent@237: array_initialization->init_array_size(current_element_type);
Laurent@635: if (current_element_default_value != NULL)
Laurent@706: array_initialization->set_array_default_initialisation(current_element_default_value);
lbessard@160: array_initialization->init_array_values(symbol);
lbessard@160: delete array_initialization;
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: };
lbessard@160:
lbessard@160:
lbessard@160: /* helper symbol for array_initialization */
lbessard@160: /* structure_element_initialization_list ',' structure_element_initialization */
lbessard@160: void *generate_c_array_initialization_c::visit(structure_element_initialization_list_c *symbol) {
lbessard@160: generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
lbessard@160: structure_initialization->init_structure_default(array_base_type);
laurent@237: structure_initialization->init_structure_values(symbol);
lbessard@160: delete structure_initialization;
lbessard@160: return NULL;
lbessard@160: }
lbessard@160:
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@160: /***********************************************************************/
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: class generate_c_vardecl_c: protected generate_c_typedecl_c {
lbessard@70:
lbessard@70: /* A Helper class to the main class... */
lbessard@70: /* print a string, except the first time it is called */
lbessard@70: /* used to print the separator "," before each variable
lbessard@70: * declaration, except the first...
lbessard@70: *
lbessard@70: * Needs to be done in a seperate class because this is called
lbessard@70: * from within various locations within the code.
lbessard@70: */
lbessard@70: class next_var_c {
lbessard@70: private:
lbessard@70: bool print_flag;
lbessard@70: std::string str1, str2;
lbessard@70:
lbessard@70: next_var_c *embedded_scope;
lbessard@70:
lbessard@70: public:
lbessard@70: next_var_c(std::string s1, std::string s2) {
lbessard@70: str1 = s1;
lbessard@70: str2 = s2;
lbessard@70: print_flag = false;
lbessard@70: embedded_scope = NULL;
lbessard@70: }
lbessard@70:
lbessard@70: std::string get(void) {
lbessard@70: if (NULL != embedded_scope)
lbessard@70: return embedded_scope->get();
lbessard@70:
lbessard@70: bool old_print_flag = print_flag;
lbessard@70: print_flag = true;
lbessard@70: if (!old_print_flag)
lbessard@70: return str1;
lbessard@70: else
lbessard@70: return str2;
lbessard@70: }
lbessard@70:
lbessard@70: /* Create a new next_var_c for an embedded scope.
lbessard@70: * From now on, every call to get() will return the
lbessard@70: * inner-most scope...!
lbessard@70: */
lbessard@70: void push(std::string s1, std::string s2) {
lbessard@70: if (NULL != embedded_scope)
lbessard@70: return embedded_scope->push(s1, s2);
lbessard@70:
lbessard@70: embedded_scope = new next_var_c(s1, s2);
lbessard@70: if (NULL == embedded_scope)
lbessard@70: ERROR;
lbessard@70: return;
lbessard@70: }
lbessard@70:
lbessard@70: /* Remove the inner-most scope... */
lbessard@70: void pop(void) {
lbessard@70: if (NULL != embedded_scope)
lbessard@70: return embedded_scope->pop();
lbessard@70:
lbessard@70: delete embedded_scope;
lbessard@70: embedded_scope = NULL;
lbessard@70: }
lbessard@70: };
lbessard@70:
lbessard@70: private:
lbessard@70: /* used to generate the ',' separating the parameters in a function call */
lbessard@70: next_var_c *nv;
lbessard@70:
lbessard@70:
lbessard@70: public:
lbessard@70: /* the types of variables that need to be processed... */
lbessard@70: static const unsigned int none_vt = 0x0000;
lbessard@70: static const unsigned int input_vt = 0x0001; // VAR_INPUT
lbessard@70: static const unsigned int output_vt = 0x0002; // VAR_OUTPUT
lbessard@70: static const unsigned int inoutput_vt = 0x0004; // VAR_IN_OUT
lbessard@70: static const unsigned int private_vt = 0x0008; // VAR
lbessard@70: static const unsigned int temp_vt = 0x0010; // VAR_TEMP
lbessard@70: static const unsigned int external_vt = 0x0020; // VAR_EXTERNAL
lbessard@70: static const unsigned int global_vt = 0x0040; // VAR_GLOBAL
lbessard@70: // Globals declared inside a resource will not be declared
lbessard@70: // unless global_vt is acompanied by resource_vt
lbessard@70: static const unsigned int located_vt = 0x0080; // VAR AT
lbessard@70: static const unsigned int program_vt = 0x0100; // PROGRAM (inside a configuration!)
lbessard@70: // Programs declared inside a resource will not be declared
lbessard@70: // unless program_vt is acompanied by resource_vt
ccb@202: static const unsigned int en_vt = 0x0200; // EN declaration
ccb@202: static const unsigned int eno_vt = 0x0400; // ENO declaration
lbessard@70: static const unsigned int resource_vt = 0x8000; // RESOURCE (inside a configuration!)
lbessard@70: // This, just of itself, will not print out any declarations!!
lbessard@70: // It must be acompanied by either program_vt and/or global_vt
lbessard@70:
laurent@221: /* the qualifier of variables that need to be processed... */
laurent@221: static const unsigned int none_vq = 0x0000;
laurent@221: static const unsigned int constant_vq = 0x0001; // CONSTANT
laurent@221: static const unsigned int retain_vq = 0x0002; // RETAIN
laurent@221: static const unsigned int non_retain_vq = 0x0004; // NON_RETAIN
laurent@221:
laurent@221:
lbessard@70: /* How variables should be declared: as local variables or
lbessard@70: * variables within a function call interface.
lbessard@70: *
lbessard@70: * This will define the format of the output generated
lbessard@70: * by this class.
lbessard@70: *
lbessard@70: * finterface_vf: function interface parameters
lbessard@70: * e.g. f( int a, long b, real c );
lbessard@70: * ---------------------
lbessard@70: * This class/function will produce the
lbessard@70: * underlined code of the above examples,
lbessard@70: * and no more!!
lbessard@70: *
lbessard@70: * localinit_vf: local declaration. Will include variable
lbessard@70: * initialisation if it is not a located variable.
lbessard@70: * e.g.
lbessard@70: * int a = 9;
lbessard@70: * long b = 99;
lbessard@70: * real c = 99.9;
lbessard@70: *
lbessard@70: * local_vf: local declaration. Will NOT include variable
lbessard@70: * initialisation.
lbessard@70: * e.g.
lbessard@70: * int a;
lbessard@70: * long b;
lbessard@70: * real c;
lbessard@70: *
lbessard@70: * init_vf: local initialisation without declaration.
lbessard@70: * e.g.
lbessard@70: * a = 9;
lbessard@70: * b = 99;
lbessard@70: * c = 99.9;
lbessard@70: *
lbessard@70: * constructorinit_vf: initialising of member variables...
lbessard@70: * e.g. for a constructor...
lbessard@70: * class_name_c(void)
lbessard@70: * : a(9), b(99), c(99.9) { // code... }
lbessard@70: * --------------------
lbessard@70: * This class/function will produce the
lbessard@70: * underlined code of the above examples,
lbessard@70: * and no more!!
lbessard@70: *
lbessard@70: * globalinit_vf: initialising of static c++ variables. These
lbessard@70: * variables may have been declared as static inside
lbessard@70: * a class, in which case the scope within which they were
lbessard@70: * previously delcared must be passed as the second parameter
lbessard@70: * to the print() function.
lbessard@70: *
lbessard@70: * e.g.
lbessard@70: * __plc_pt_c START_P::loc = __plc_pt_c("I2");
lbessard@70: */
lbessard@70: typedef enum {finterface_vf,
lbessard@145: foutputassign_vf,
lbessard@145: local_vf,
ccb@202: localinit_vf,
ccb@202: init_vf,
ccb@202: constructorinit_vf,
laurent@396: globalinit_vf,
laurent@396: globalprototype_vf,
ccb@202: } varformat_t;
lbessard@70:
lbessard@70:
lbessard@70: private:
lbessard@70: /* variable used to store the types of variables that need to be processed... */
lbessard@70: /* Only set in the constructor...! */
lbessard@70: /* Will contain a set of values of generate_c_vardecl_c::XXXX_vt */
lbessard@70: unsigned int wanted_vartype;
laurent@221:
lbessard@70: /* variable used to store the type of variable currently being processed... */
lbessard@70: /* Will contain a single value of generate_c_vardecl_c::XXXX_vt */
lbessard@70: unsigned int current_vartype;
lbessard@70:
laurent@221: /* variable used to store the qualifier of variable currently being processed... */
laurent@221: /* Will contain a single value of generate_c_vardecl_c::XXXX_vq */
laurent@221: unsigned int current_varqualifier;
laurent@221:
lbessard@70: /* How variables should be declared: as local variables or
lbessard@70: * variables within a function interface...
lbessard@70: */
lbessard@70: /* Only set in the constructor...! */
lbessard@70: varformat_t wanted_varformat;
lbessard@70:
lbessard@70: /* The number of variables already declared. */
lbessard@70: /* Used to declare 'void' in case no variables are declared in a function interface... */
lbessard@70: int finterface_var_count;
lbessard@70:
etisserant@138: /* Current parsed resource name, for resource
etisserant@138: * specific global variable declaration (with #define...)*/
etisserant@138: symbol_c *resource_name;
lbessard@70:
lbessard@70: /* Holds the references to the type and initial value
lbessard@70: * of the variables currently being declared.
lbessard@70: * Please read the comment under var1_init_decl_c for further
lbessard@70: * details...
lbessard@70: *
lbessard@70: * We make an effort to keep these pointers pointing to NULL
lbessard@70: * whenever we are outside the scope of variable declaration
lbessard@70: * (i.e. when we are traversing a part of the parse tree which
lbessard@70: * is not part of variable declaration) in order tio try to catch
lbessard@70: * any bugs as soon as possible.
lbessard@70: */
lbessard@70: symbol_c *current_var_type_symbol;
lbessard@70: symbol_c *current_var_init_symbol;
lbessard@70: void update_type_init(symbol_c *symbol /* a spec_init_c, subrange_spec_init_c, etc... */ ) {
lbessard@70: this->current_var_type_symbol = spec_init_sperator_c::get_spec(symbol);
lbessard@70: this->current_var_init_symbol = spec_init_sperator_c::get_init(symbol);
lbessard@70: if (NULL == this->current_var_type_symbol)
lbessard@70: ERROR;
lbessard@70: if (NULL == this->current_var_init_symbol) {
lbessard@70: /* We try to find the data type's default value... */
lbessard@70: this->current_var_init_symbol = (symbol_c *)this->current_var_type_symbol->accept(*type_initial_value_c::instance());
lbessard@70: /* Note that Function Block 'data types' do not have a default value, so we cannot abort if no default value is found! */
lbessard@70: /*
lbessard@70: if (NULL == this->current_var_init_symbol)
lbessard@70: ERROR;
lbessard@70: */
lbessard@70: }
lbessard@70: }
lbessard@70:
lbessard@70: void void_type_init(void) {
lbessard@70: this->current_var_type_symbol = NULL;
lbessard@70: this->current_var_init_symbol = NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* Only used when wanted_varformat == globalinit_vf
lbessard@70: * Holds a pointer to an identifier_c, which in turns contains
lbessard@70: * the identifier of the scope within which the static member was
lbessard@70: * declared.
lbessard@70: */
lbessard@70: symbol_c *globalnamespace;
lbessard@70:
laurent@221: void *print_retain(void) {
Laurent@706: s4o.print(",");
laurent@221: switch (current_varqualifier) {
Laurent@706: case retain_vq:
laurent@221: s4o.print("1");
laurent@221: break;
laurent@221: case non_retain_vq:
laurent@221: s4o.print("0");
laurent@221: break;
Laurent@706: default:
Laurent@706: s4o.print("retain");
Laurent@706: break;
laurent@221: }
laurent@221: return NULL;
laurent@221: }
laurent@221:
lbessard@70: /* Actually produce the output where variables are declared... */
ccb@202: /* Note that located variables and EN/ENO are the exception, they
ccb@202: * being declared in the located_var_decl_c,
ccb@202: * en_param_declaration_c and eno_param_declaration_c visitors...
lbessard@70: */
lbessard@70: void *declare_variables(symbol_c *symbol, bool is_fb = false) {
lbessard@70: list_c *list = dynamic_cast(symbol);
lbessard@70: /* should NEVER EVER occur!! */
lbessard@70: if (list == NULL) ERROR;
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: if ((wanted_varformat == local_vf) ||
lbessard@70: (wanted_varformat == init_vf) ||
laurent@236: (wanted_varformat == localinit_vf)) {
lbessard@70: for(int i = 0; i < list->n; i++) {
lbessard@70: s4o.print(s4o.indent_spaces);
laurent@217: if (wanted_varformat == local_vf) {
Laurent@706: if (!is_fb) {
Laurent@706: s4o.print(DECLARE_VAR);
Laurent@706: s4o.print("(");
Laurent@706: }
Laurent@706: this->current_var_type_symbol->accept(*this);
Laurent@706: if (is_fb)
Laurent@706: s4o.print(" ");
Laurent@706: else
Laurent@706: s4o.print(",");
Laurent@706: print_variable_prefix();
laurent@217: }
laurent@217: else if (wanted_varformat == localinit_vf) {
Laurent@706: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(" ");
laurent@392: print_variable_prefix();
lbessard@70: }
laurent@334: else if (wanted_varformat == init_vf) {
Laurent@706: s4o.print(SET_VAR);
Laurent@706: s4o.print("(");
Laurent@706: print_variable_prefix();
Laurent@706: s4o.print(",");
laurent@334: }
lbessard@70: list->elements[i]->accept(*this);
lbessard@70: if (wanted_varformat != local_vf) {
Laurent@706: if (wanted_varformat == localinit_vf &&
Laurent@706: (current_vartype & inoutput_vt) != 0) {
laurent@236: s4o.print(";\n");
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: s4o.print("if (__");
laurent@236: list->elements[i]->accept(*this);
laurent@236: s4o.print(" != NULL) {\n");
laurent@236: s4o.indent_right();
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: list->elements[i]->accept(*this);
laurent@236: s4o.print(" = *__");
laurent@236: list->elements[i]->accept(*this);
laurent@236: s4o.print(";\n");
laurent@236: s4o.indent_left();
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: s4o.print("}\n");
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: s4o.print("else {\n");
laurent@236: s4o.indent_right();
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: s4o.print("static const ");
laurent@236: this->current_var_type_symbol->accept(*this);
laurent@236: s4o.print(" temp = ");
lbessard@70: this->current_var_init_symbol->accept(*this);
laurent@236: s4o.print(";\n");
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: list->elements[i]->accept(*this);
laurent@236: s4o.print(" = temp;\n");
laurent@236: s4o.indent_left();
laurent@236: s4o.print(s4o.indent_spaces);
laurent@236: s4o.print("}\n");
lbessard@70: }
Laurent@706: else if (wanted_varformat == init_vf) {
Laurent@706: s4o.print(",");
Laurent@706: this->current_var_init_symbol->accept(*this);
Laurent@706: s4o.print(");\n");
Laurent@706: }
Laurent@706: else {
Laurent@706: if (this->current_var_init_symbol != NULL) {
laurent@236: s4o.print(" = ");
laurent@236: this->current_var_init_symbol->accept(*this);
laurent@236: }
laurent@236: s4o.print(";\n");
laurent@236: }
lbessard@70: }
laurent@221: else if (is_fb)
Laurent@706: s4o.print(";\n");
laurent@217: else
laurent@221: s4o.print(")\n");
lbessard@70: }
lbessard@70: }
lbessard@70:
lbessard@70: if (wanted_varformat == finterface_vf) {
lbessard@70: for(int i = 0; i < list->n; i++) {
lbessard@70: finterface_var_count++;
lbessard@70: s4o.print(nv->get());
lbessard@70: s4o.print("\n" + s4o.indent_spaces);
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@236: if ((current_vartype & (output_vt | inoutput_vt)) != 0)
lbessard@145: s4o.print(" *__");
lbessard@70: else
lbessard@70: s4o.print(" ");
lbessard@70: list->elements[i]->accept(*this);
lbessard@70: /* We do not print the initial value at function declaration!
lbessard@70: * It is up to the caller to pass the correct default value
lbessard@70: * if none is specified in the ST source code
lbessard@70: */
lbessard@70: /* if (this->current_var_init_symbol != NULL) {
lbessard@70: s4o.print(" = "); this->current_var_init_symbol->accept(*this);}
lbessard@70: */
lbessard@70: }
lbessard@70: }
lbessard@70:
lbessard@145: if (wanted_varformat == foutputassign_vf) {
lbessard@145: for(int i = 0; i < list->n; i++) {
laurent@236: if ((current_vartype & (output_vt | inoutput_vt)) != 0) {
lbessard@145: s4o.print(s4o.indent_spaces + "if (__");
lbessard@145: list->elements[i]->accept(*this);
lbessard@145: s4o.print(" != NULL) {\n");
lbessard@145: s4o.indent_right();
lbessard@145: s4o.print(s4o.indent_spaces + "*__");
lbessard@145: list->elements[i]->accept(*this);
lbessard@145: s4o.print(" = ");
lbessard@145: list->elements[i]->accept(*this);
lbessard@145: s4o.print(";\n");
lbessard@145: s4o.indent_left();
lbessard@145: s4o.print(s4o.indent_spaces + "}\n");
lbessard@145: }
lbessard@145: }
lbessard@145: }
lbessard@145:
lbessard@70: if (wanted_varformat == constructorinit_vf) {
lbessard@70: for(int i = 0; i < list->n; i++) {
lbessard@70: if (is_fb) {
lbessard@70: s4o.print(nv->get());
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(FB_INIT_SUFFIX);
lbessard@70: s4o.print("(&");
lbessard@70: this->print_variable_prefix();
lbessard@70: list->elements[i]->accept(*this);
laurent@221: print_retain();
lbessard@70: s4o.print(");");
lbessard@70: }
lbessard@70: else if (this->current_var_init_symbol != NULL) {
lbessard@70: s4o.print(nv->get());
laurent@217: s4o.print(INIT_VAR);
laurent@217: s4o.print("(");
lbessard@70: this->print_variable_prefix();
lbessard@70: list->elements[i]->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: this->current_var_init_symbol->accept(*this);
laurent@221: print_retain();
laurent@217: s4o.print(")");
lbessard@70: }
lbessard@70: }
lbessard@70: }
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: public:
etisserant@138: generate_c_vardecl_c(stage4out_c *s4o_ptr, varformat_t varformat, unsigned int vartype, symbol_c* res_name = NULL)
lbessard@70: : generate_c_typedecl_c(s4o_ptr) {
lbessard@70: wanted_varformat = varformat;
lbessard@70: wanted_vartype = vartype;
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: current_var_type_symbol = NULL;
lbessard@70: current_var_init_symbol = NULL;
lbessard@70: globalnamespace = NULL;
lbessard@70: nv = NULL;
etisserant@138: resource_name = res_name;
lbessard@70: }
lbessard@70:
lbessard@160: ~generate_c_vardecl_c(void) {}
lbessard@70:
lbessard@70: void print(symbol_c *symbol, symbol_c *scope = NULL, const char *variable_prefix = NULL) {
lbessard@70: this->set_variable_prefix(variable_prefix);
lbessard@70: if (globalinit_vf == wanted_varformat)
lbessard@70: globalnamespace = scope;
lbessard@70:
lbessard@70: finterface_var_count = 0;
lbessard@70:
lbessard@70: switch (wanted_varformat) {
lbessard@70: case constructorinit_vf: nv = new next_var_c("", "\n"+s4o.indent_spaces); break;
lbessard@70: case finterface_vf: /* fall through... */
lbessard@70: case localinit_vf: /* fall through... */
lbessard@70: case local_vf: nv = new next_var_c("", ", "); break;
lbessard@70: default: nv = NULL;
lbessard@70: } /* switch() */
lbessard@70:
lbessard@70: symbol->accept(*this);
lbessard@189:
lbessard@70: delete nv;
lbessard@70: nv = NULL;
lbessard@70: globalnamespace = NULL;
lbessard@70: }
lbessard@70:
lbessard@70: protected:
lbessard@70: /***************************/
lbessard@70: /* B 0 - Programming Model */
lbessard@70: /***************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /*************************/
lbessard@70: /* B.1 - Common elements */
lbessard@70: /*************************/
lbessard@70: /*******************************************/
lbessard@70: /* B 1.1 - Letters, digits and identifiers */
lbessard@70: /*******************************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /*********************/
lbessard@70: /* B 1.2 - Constants */
lbessard@70: /*********************/
lbessard@70: /* originally empty... */
lbessard@70:
lbessard@70: /******************************/
lbessard@70: /* B 1.2.1 - Numeric Literals */
lbessard@70: /******************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /*******************************/
lbessard@70: /* B.1.2.2 Character Strings */
lbessard@70: /*******************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /***************************/
lbessard@70: /* B 1.2.3 - Time Literals */
lbessard@70: /***************************/
lbessard@70: /************************/
lbessard@70: /* B 1.2.3.1 - Duration */
lbessard@70: /************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /************************************/
lbessard@70: /* B 1.2.3.2 - Time of day and Date */
lbessard@70: /************************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /**********************/
lbessard@70: /* B.1.3 - Data types */
lbessard@70: /**********************/
lbessard@70: /***********************************/
lbessard@70: /* B 1.3.1 - Elementary Data Types */
lbessard@70: /***********************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /********************************/
lbessard@70: /* B.1.3.2 - Generic data types */
lbessard@70: /********************************/
lbessard@70: /* originally empty... */
lbessard@70:
lbessard@70: /********************************/
lbessard@70: /* B 1.3.3 - Derived data types */
lbessard@70: /********************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /*********************/
lbessard@70: /* B 1.4 - Variables */
lbessard@70: /*********************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /********************************************/
lbessard@70: /* B.1.4.1 Directly Represented Variables */
lbessard@70: /********************************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /*************************************/
lbessard@70: /* B.1.4.2 Multi-element Variables */
lbessard@70: /*************************************/
lbessard@70: /* done in base class(es) */
lbessard@70:
lbessard@70: /******************************************/
lbessard@70: /* B 1.4.3 - Declaration & Initialisation */
lbessard@70: /******************************************/
laurent@221:
laurent@221: void *visit(constant_option_c *symbol) {
laurent@221: current_varqualifier = constant_vq;
laurent@221: return NULL;
laurent@221: }
laurent@221:
laurent@221: void *visit(retain_option_c *symbol) {
laurent@221: current_varqualifier = retain_vq;
laurent@221: return NULL;
laurent@221: }
laurent@221:
laurent@221: void *visit(non_retain_option_c *symbol) {
laurent@221: current_varqualifier = non_retain_vq;
laurent@221: return NULL;
laurent@221: }
lbessard@70:
lbessard@70: void *visit(input_declarations_c *symbol) {
lbessard@70: TRACE("input_declarations_c");
lbessard@70: if ((wanted_vartype & input_vt) != 0) {
lbessard@70: /*
lbessard@70: // TO DO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: //s4o.indent_right();
lbessard@70: current_vartype = input_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->input_declaration_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vt;
lbessard@70: //s4o.indent_left();
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for input_declarations */
lbessard@70: void *visit(input_declaration_list_c *symbol) {
lbessard@70: TRACE("input_declaration_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: void *visit(edge_declaration_c *symbol) {
lbessard@70: TRACE("edge_declaration_c");
lbessard@70: // TO DO ...
lbessard@70: symbol->var1_list->accept(*this);
lbessard@70: s4o.print(" : BOOL ");
lbessard@70: symbol->edge->accept(*this);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@146: void *visit(en_param_declaration_c *symbol) {
lbessard@146: TRACE("en_declaration_c");
lbessard@146: if (wanted_varformat == finterface_vf) {
lbessard@146: finterface_var_count++;
lbessard@146: }
ccb@202: if ((wanted_vartype & en_vt) != 0) {
lbessard@146: if (wanted_varformat == finterface_vf) {
lbessard@146: s4o.print(nv->get());
ccb@202: s4o.print("\n" + s4o.indent_spaces);
ccb@202: symbol->type->accept(*this);
ccb@202: s4o.print(" ");
ccb@202: symbol->name->accept(*this);
ccb@202: }
ccb@202:
ccb@202: if ((wanted_varformat == local_vf) ||
ccb@202: (wanted_varformat == init_vf) ||
ccb@202: (wanted_varformat == localinit_vf)) {
ccb@202: s4o.print(s4o.indent_spaces);
laurent@217: if (wanted_varformat == local_vf) {
Laurent@706: s4o.print(DECLARE_VAR);
Laurent@706: s4o.print("(");
Laurent@706: symbol->type->accept(*this);
laurent@217: s4o.print(",");
laurent@217: }
laurent@217: else if (wanted_varformat == localinit_vf) {
ccb@202: symbol->type->accept(*this);
ccb@202: s4o.print(" ");
ccb@202: }
ccb@202: print_variable_prefix();
ccb@202: symbol->name->accept(*this);
laurent@217: if (wanted_varformat == local_vf)
Laurent@706: s4o.print(")\n");
laurent@217: else {
ccb@202: s4o.print(" = ");
ccb@202: symbol->value->accept(*this);
laurent@217: s4o.print(";\n");
laurent@217: }
ccb@202: }
ccb@202:
lbessard@146: if (wanted_varformat == constructorinit_vf) {
ccb@202: /* NOTE: I (Mario) think this is dead code - never gets executed. Must confirm it before deleting it... */
lbessard@146: s4o.print(nv->get());
laurent@217: s4o.print(INIT_VAR);
laurent@217: s4o.print("(");
lbessard@146: this->print_variable_prefix();
ccb@202: // s4o.print("EN = __BOOL_LITERAL(TRUE);");
ccb@202: symbol->name->accept(*this);
laurent@217: s4o.print(",");
ccb@202: symbol->value->accept(*this);
laurent@221: print_retain();
laurent@217: s4o.print(")");
lbessard@146: }
lbessard@146: }
ccb@202: return NULL;
ccb@202: }
ccb@202:
ccb@202:
ccb@202: void *visit(eno_param_declaration_c *symbol) {
ccb@202: TRACE("eno_declaration_c");
ccb@202: if (wanted_varformat == finterface_vf) {
ccb@202: finterface_var_count++;
ccb@202: }
ccb@202: if ((wanted_vartype & eno_vt) != 0) {
ccb@202: if (wanted_varformat == finterface_vf) {
ccb@202: s4o.print(nv->get());
ccb@202: // s4o.print("\n" + s4o.indent_spaces + "BOOL *ENO");
ccb@202: s4o.print("\n" + s4o.indent_spaces);
ccb@202: symbol->type->accept(*this);
ccb@202: s4o.print(" *__");
ccb@202: symbol->name->accept(*this);
ccb@202: }
ccb@202:
ccb@202: if ((wanted_varformat == local_vf) ||
ccb@202: (wanted_varformat == init_vf) ||
ccb@202: (wanted_varformat == localinit_vf)) {
ccb@202: s4o.print(s4o.indent_spaces);
laurent@217: if (wanted_varformat == local_vf) {
Laurent@706: s4o.print(DECLARE_VAR);
Laurent@706: s4o.print("(");
laurent@217: symbol->type->accept(*this);
laurent@217: s4o.print(",");
laurent@217: }
laurent@217: else if (wanted_varformat == localinit_vf) {
ccb@202: symbol->type->accept(*this);
ccb@202: s4o.print(" ");
ccb@202: }
ccb@202: print_variable_prefix();
ccb@202: symbol->name->accept(*this);
laurent@217: if (wanted_varformat == local_vf)
Laurent@706: s4o.print(")\n");
laurent@217: else
Laurent@706: s4o.print(" = __BOOL_LITERAL(TRUE);\n");
ccb@202: }
ccb@202:
ccb@202: if (wanted_varformat == foutputassign_vf) {
ccb@202: s4o.print(s4o.indent_spaces + "if (__");
ccb@202: symbol->name->accept(*this);
ccb@202: s4o.print(" != NULL) {\n");
ccb@202: s4o.indent_right();
ccb@202: s4o.print(s4o.indent_spaces + "*__");
ccb@202: symbol->name->accept(*this);
ccb@202: s4o.print(" = ");
ccb@202: symbol->name->accept(*this);
ccb@202: s4o.print(";\n");
ccb@202: s4o.indent_left();
ccb@202: s4o.print(s4o.indent_spaces + "}\n");
ccb@202: }
ccb@202:
ccb@202: if (wanted_varformat == constructorinit_vf) {
ccb@202: /* NOTE: I (Mario) think this is dead code - never gets executed. Must confirm it before deleting it... */
ccb@202: s4o.print(nv->get());
laurent@217: s4o.print(INIT_VAR);
laurent@217: s4o.print("(");
ccb@202: this->print_variable_prefix();
ccb@202: // s4o.print("ENO = __BOOL_LITERAL(TRUE);");
ccb@202: symbol->name->accept(*this);
laurent@221: s4o.print(",__BOOL_LITERAL(TRUE)");
laurent@221: print_retain();
laurent@221: s4o.print(")");
ccb@202: }
ccb@202: }
ccb@202: return NULL;
ccb@202: }
ccb@202:
lbessard@146:
lbessard@70: void *visit(raising_edge_option_c *symbol) {
lbessard@70: // TO DO ...
lbessard@70: s4o.print("R_EDGE");
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@98: /* var1_list ':' array_spec_init */
lbessard@98: // SYM_REF2(array_var_init_decl_c, var1_list, array_spec_init)
lbessard@98: void *visit(array_var_init_decl_c *symbol) {
lbessard@98: TRACE("array_var_init_decl_c");
lbessard@98: /* Please read the comments inside the var1_init_decl_c
lbessard@98: * visitor, as they apply here too.
lbessard@98: */
lbessard@98:
lbessard@98: /* Start off by setting the current_var_type_symbol and
lbessard@98: * current_var_init_symbol private variables...
lbessard@98: */
lbessard@98: update_type_init(symbol->array_spec_init);
lbessard@98:
lbessard@98: /* now to produce the c equivalent... */
lbessard@160: if (wanted_varformat == constructorinit_vf) {
lbessard@160: generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o);
lbessard@160: array_initialization->set_variable_prefix(get_variable_prefix());
lbessard@160: array_initialization->init_array(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol);
lbessard@160: delete array_initialization;
lbessard@160: }
lbessard@98: else
lbessard@98: symbol->var1_list->accept(*this);
lbessard@98:
lbessard@98: /* Values no longer in scope, and therefore no longer used.
lbessard@98: * Make an effort to keep them set to NULL when not in use
lbessard@98: * in order to catch bugs as soon as possible...
lbessard@98: */
lbessard@98: void_type_init();
lbessard@98:
lbessard@98: return NULL;
lbessard@98: }
lbessard@70:
laurent@377: /* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */
laurent@377: void *visit(array_specification_c *symbol) {
laurent@377: s4o.print("__");
laurent@377: symbol->non_generic_type_name->accept(*this);
laurent@377: symbol->array_subrange_list->accept(*this);
laurent@377: return NULL;
laurent@377: }
laurent@377:
laurent@377: /* signed_integer DOTDOT signed_integer */
laurent@377: //SYM_REF2(subrange_c, lower_limit, upper_limit)
laurent@377: void *visit(subrange_c *symbol) {
laurent@377: s4o.print("_");
msousa@594: s4o.print(symbol->dimension);
laurent@377: return NULL;
laurent@377: }
laurent@377:
lbessard@70: /* var1_list ':' initialized_structure */
lbessard@70: // SYM_REF2(structured_var_init_decl_c, var1_list, initialized_structure)
lbessard@70: void *visit(structured_var_init_decl_c *symbol) {
lbessard@70: TRACE("structured_var_init_decl_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol->initialized_structure);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@160: if (wanted_varformat == constructorinit_vf) {
lbessard@160: generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
lbessard@160: structure_initialization->set_variable_prefix(get_variable_prefix());
lbessard@160: structure_initialization->init_structure(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol);
lbessard@160: delete structure_initialization;
lbessard@160: }
lbessard@160: else
lbessard@160: symbol->var1_list->accept(*this);
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* fb_name_list ':' function_block_type_name ASSIGN structure_initialization */
lbessard@70: /* structure_initialization -> may be NULL ! */
lbessard@70: void *visit(fb_name_decl_c *symbol) {
lbessard@70: TRACE("fb_name_decl_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: symbol->fb_name_list->accept(*this);
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* fb_name_list ',' fb_name */
lbessard@70: void *visit(fb_name_list_c *symbol) {
lbessard@70: TRACE("fb_name_list_c");
lbessard@70: declare_variables(symbol, true);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* VAR_OUTPUT [RETAIN | NON_RETAIN] var_init_decl_list END_VAR */
lbessard@70: /* option -> may be NULL ! */
lbessard@70: void *visit(output_declarations_c *symbol) {
lbessard@70: TRACE("output_declarations_c");
lbessard@70: if ((wanted_vartype & output_vt) != 0) {
lbessard@70: /*
lbessard@70: // TO DO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: //s4o.indent_right();
lbessard@70: current_vartype = output_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->var_init_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: //s4o.indent_left();
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@146:
lbessard@70: /* VAR_IN_OUT var_declaration_list END_VAR */
lbessard@70: void *visit(input_output_declarations_c *symbol) {
lbessard@70: TRACE("input_output_declarations_c");
lbessard@70: if ((wanted_vartype & inoutput_vt) != 0) {
lbessard@70: //s4o.indent_right();
lbessard@70: current_vartype = inoutput_vt;
lbessard@70: symbol->var_declaration_list->accept(*this);
lbessard@70: current_vartype = none_vt;
lbessard@70: //s4o.indent_left();
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for input_output_declarations */
lbessard@70: /* var_declaration_list var_declaration ';' */
lbessard@70: void *visit(var_declaration_list_c *symbol) {
lbessard@70: TRACE("var_declaration_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* var1_list ':' array_specification */
laurent@237: //SYM_REF2(array_var_declaration_c, var1_list, array_specification)
laurent@237: void *visit(array_var_declaration_c *symbol) {
laurent@237: TRACE("array_var_declaration_c");
laurent@237: /* Please read the comments inside the var1_init_decl_c
laurent@237: * visitor, as they apply here too.
laurent@237: */
laurent@237:
laurent@237: /* Start off by setting the current_var_type_symbol and
laurent@237: * current_var_init_symbol private variables...
laurent@237: */
laurent@237: update_type_init(symbol->array_specification);
laurent@237:
laurent@237: /* now to produce the c equivalent... */
laurent@237: if (wanted_varformat == constructorinit_vf) {
laurent@237: generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o);
laurent@237: array_initialization->set_variable_prefix(get_variable_prefix());
laurent@237: array_initialization->init_array(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol);
laurent@237: delete array_initialization;
laurent@237: }
laurent@237: else
laurent@237: symbol->var1_list->accept(*this);
laurent@237:
laurent@237: /* Values no longer in scope, and therefore no longer used.
laurent@237: * Make an effort to keep them set to NULL when not in use
laurent@237: * in order to catch bugs as soon as possible...
laurent@237: */
laurent@237: void_type_init();
laurent@237:
laurent@237: return NULL;
laurent@237: }
lbessard@70:
lbessard@98: void *visit(array_initial_elements_list_c *symbol) {
laurent@377: if (wanted_varformat == localinit_vf || wanted_varformat == constructorinit_vf) {
Laurent@706: generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o);
Laurent@706: array_initialization->init_array_size(this->current_var_type_symbol);
Laurent@706: array_initialization->init_array_values(this->current_var_init_symbol);
Laurent@706: delete array_initialization;
laurent@226: }
lbessard@98: return NULL;
lbessard@98: }
lbessard@98:
lbessard@70: /* var1_list ':' structure_type_name */
lbessard@70: //SYM_REF2(structured_var_declaration_c, var1_list, structure_type_name)
lbessard@70: void *visit(structured_var_declaration_c *symbol) {
lbessard@70: TRACE("structured_var_declaration_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol->structure_type_name);
lbessard@70:
lbessard@160: if (wanted_varformat == constructorinit_vf) {
lbessard@160: generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
lbessard@160: structure_initialization->set_variable_prefix(get_variable_prefix());
lbessard@160: structure_initialization->init_structure(symbol->var1_list, this->current_var_type_symbol, this->current_var_init_symbol);
lbessard@160: delete structure_initialization;
lbessard@160: }
lbessard@160: else
lbessard@160: /* now to produce the c equivalent... */
lbessard@160: symbol->var1_list->accept(*this);
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
laurent@226: void *visit(structure_element_initialization_list_c *symbol) {
conti@582: if (wanted_varformat == localinit_vf || wanted_varformat == constructorinit_vf) {
laurent@226: generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
laurent@226: structure_initialization->init_structure_default(this->current_var_type_symbol);
laurent@237: structure_initialization->init_structure_values(this->current_var_init_symbol);
Laurent@706: delete structure_initialization;
laurent@226: }
laurent@226: return NULL;
laurent@226: }
lbessard@70:
lbessard@70: /* VAR [CONSTANT] var_init_decl_list END_VAR */
lbessard@70: /* option -> may be NULL ! */
lbessard@70: /* helper symbol for input_declarations */
lbessard@70: void *visit(var_declarations_c *symbol) {
lbessard@70: TRACE("var_declarations_c");
lbessard@70: if ((wanted_vartype & private_vt) != 0) {
lbessard@70: /*
lbessard@70: // TO DO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: current_vartype = private_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->var_init_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* VAR RETAIN var_init_decl_list END_VAR */
lbessard@70: void *visit(retentive_var_declarations_c *symbol) {
lbessard@70: TRACE("retentive_var_declarations_c");
lbessard@70: if ((wanted_vartype & private_vt) != 0) {
lbessard@70: current_vartype = private_vt;
laurent@221: current_varqualifier = retain_vq;
lbessard@70: symbol->var_init_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* VAR [CONSTANT|RETAIN|NON_RETAIN] located_var_decl_list END_VAR */
lbessard@70: /* option -> may be NULL ! */
lbessard@70: //SYM_REF2(located_var_declarations_c, option, located_var_decl_list)
lbessard@70: void *visit(located_var_declarations_c *symbol) {
lbessard@70: TRACE("located_var_declarations_c");
lbessard@70: if ((wanted_vartype & located_vt) != 0) {
lbessard@70: /*
lbessard@70: // TO DO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: current_vartype = located_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->located_var_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for located_var_declarations */
lbessard@70: /* located_var_decl_list located_var_decl ';' */
lbessard@70: //SYM_LIST(located_var_decl_list_c)
lbessard@70: void *visit(located_var_decl_list_c *symbol) {
lbessard@70: TRACE("located_var_decl_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* [variable_name] location ':' located_var_spec_init */
lbessard@70: /* variable_name -> may be NULL ! */
lbessard@70: //SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused)
lbessard@70: void *visit(located_var_decl_c *symbol) {
lbessard@70: TRACE("located_var_decl_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol->located_var_spec_init);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: switch(wanted_varformat) {
lbessard@70: case local_vf:
lbessard@70: s4o.print(s4o.indent_spaces);
laurent@217: s4o.print(DECLARE_LOCATED);
laurent@217: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: if (symbol->variable_name != NULL)
lbessard@70: symbol->variable_name->accept(*this);
lbessard@70: else
lbessard@70: symbol->location->accept(*this);
laurent@217: s4o.print(")\n");
lbessard@70: break;
lbessard@70:
lbessard@70: case constructorinit_vf:
lbessard@70: s4o.print(nv->get());
laurent@217: s4o.print(INIT_LOCATED);
laurent@217: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: symbol->location->accept(*this);
laurent@217: s4o.print(",");
laurent@230: print_variable_prefix();
lbessard@70: if (symbol->variable_name != NULL)
lbessard@70: symbol->variable_name->accept(*this);
lbessard@70: else
lbessard@70: symbol->location->accept(*this);
laurent@221: print_retain();
laurent@217: s4o.print(")\n");
greg@152: if (this->current_var_init_symbol != NULL) {
Laurent@706: s4o.print(s4o.indent_spaces);
Laurent@706: s4o.print(INIT_LOCATED_VALUE);
Laurent@706: s4o.print("(");
Laurent@706: print_variable_prefix();
Laurent@706: if (symbol->variable_name != NULL)
greg@152: symbol->variable_name->accept(*this);
greg@152: else
greg@152: symbol->location->accept(*this);
Laurent@706: s4o.print(",");
greg@152: this->current_var_init_symbol->accept(*this);
laurent@230: s4o.print(")");
laurent@217: }
lbessard@70: break;
lbessard@70:
lbessard@70: case globalinit_vf:
lbessard@70: s4o.print(s4o.indent_spaces + "__plc_pt_c<");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(", 8*sizeof(");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(")> ");
lbessard@70: if (this->globalnamespace != NULL) {
lbessard@70: this->globalnamespace->accept(*this);
lbessard@70: s4o.print("::");
lbessard@70: }
lbessard@70: if (symbol->variable_name != NULL)
lbessard@70: symbol->variable_name->accept(*this);
lbessard@70: else
lbessard@70: symbol->location->accept(*this);
lbessard@70:
lbessard@70: s4o.print(" = ");
lbessard@70:
lbessard@70: s4o.print(s4o.indent_spaces + "__plc_pt_c<");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(", 8*sizeof(");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(")>(\"");
lbessard@70: symbol->location->accept(*this);
lbessard@70: s4o.print("\"");
lbessard@70: if (this->current_var_init_symbol != NULL) {
lbessard@70: s4o.print(", ");
lbessard@70: this->current_var_init_symbol->accept(*this);
lbessard@70: }
lbessard@70: s4o.print(");\n");
lbessard@70: break;
lbessard@70:
lbessard@70: default:
lbessard@70: ERROR;
lbessard@70: } /* switch() */
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /*| VAR_EXTERNAL [CONSTANT] external_declaration_list END_VAR */
lbessard@70: /* option -> may be NULL ! */
lbessard@70: //SYM_REF2(external_var_declarations_c, option, external_declaration_list)
lbessard@70: void *visit(external_var_declarations_c *symbol) {
lbessard@70: TRACE("external_var_declarations_c");
lbessard@70: if ((wanted_vartype & external_vt) != 0) {
lbessard@70: /*
lbessard@70: // TODO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: //s4o.indent_right();
lbessard@70: current_vartype = external_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->external_declaration_list->accept(*this);
lbessard@70: current_vartype = none_vt;
laurent@221: current_varqualifier = none_vq;
lbessard@70: //s4o.indent_left();
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for external_var_declarations */
lbessard@70: /*| external_declaration_list external_declaration';' */
lbessard@70: //SYM_LIST(external_declaration_list_c)
lbessard@70: /* helper symbol for input_declarations */
lbessard@70: void *visit(external_declaration_list_c *symbol) {
lbessard@70: TRACE("external_declaration_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* global_var_name ':' (simple_specification|subrange_specification|enumerated_specification|array_specification|prev_declared_structure_type_name|function_block_type_name */
lbessard@70: //SYM_REF2(external_declaration_c, global_var_name, specification)
lbessard@70: void *visit(external_declaration_c *symbol) {
lbessard@70: TRACE("external_declaration_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: this->current_var_type_symbol = symbol->specification;
lbessard@70: this->current_var_init_symbol = NULL;
Laurent@706: bool is_fb = type_is_fb(this->current_var_type_symbol);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: switch (wanted_varformat) {
lbessard@70: case local_vf:
lbessard@70: case localinit_vf:
lbessard@70: s4o.print(s4o.indent_spaces);
Laurent@706: if (is_fb)
Laurent@706: s4o.print(DECLARE_EXTERNAL_FB);
Laurent@706: else
Laurent@706: s4o.print(DECLARE_EXTERNAL);
laurent@217: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: symbol->global_var_name->accept(*this);
laurent@217: s4o.print(")\n");
lbessard@70: break;
lbessard@70:
lbessard@70: case constructorinit_vf:
lbessard@70: s4o.print(nv->get());
Laurent@706: if (is_fb)
Laurent@706: s4o.print(INIT_EXTERNAL_FB);
Laurent@706: else
Laurent@706: s4o.print(INIT_EXTERNAL);
laurent@217: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: symbol->global_var_name->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: print_variable_prefix();
lbessard@70: symbol->global_var_name->accept(*this);
laurent@221: print_retain();
laurent@217: s4o.print(")");
lbessard@70: break;
lbessard@70:
lbessard@70: case finterface_vf:
lbessard@70: finterface_var_count++;
lbessard@70: s4o.print(nv->get());
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(" *");
lbessard@70: symbol->global_var_name->accept(*this);
lbessard@70: break;
lbessard@70:
lbessard@70: default:
lbessard@70: ERROR;
lbessard@70: }
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /*| VAR_GLOBAL [CONSTANT|RETAIN] global_var_decl_list END_VAR */
lbessard@70: /* option -> may be NULL ! */
lbessard@70: // SYM_REF2(global_var_declarations_c, option, global_var_decl_list)
lbessard@70: void *visit(global_var_declarations_c *symbol) {
lbessard@70: TRACE("global_var_declarations_c");
lbessard@70: if ((wanted_vartype & global_vt) != 0) {
lbessard@70: /*
lbessard@70: // TODO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: //s4o.indent_right();
lbessard@70: unsigned int previous_vartype = current_vartype;
lbessard@70: // previous_vartype will be either none_vt, or resource_vt
lbessard@70: current_vartype = global_vt;
laurent@221: if (symbol->option != NULL)
laurent@221: symbol->option->accept(*this);
lbessard@70: symbol->global_var_decl_list->accept(*this);
lbessard@70: current_vartype = previous_vartype;
laurent@221: current_varqualifier = none_vq;
lbessard@70: //s4o.indent_left();
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for global_var_declarations */
lbessard@70: /*| global_var_decl_list global_var_decl ';' */
lbessard@70: //SYM_LIST(global_var_decl_list_c)
lbessard@70: void *visit(global_var_decl_list_c *symbol) {
lbessard@70: TRACE("global_var_decl_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */
lbessard@70: /* type_specification ->may be NULL ! */
lbessard@70: // SYM_REF2(global_var_decl_c, global_var_spec, type_specification)
lbessard@70: void *visit(global_var_decl_c *symbol) {
lbessard@70: TRACE("global_var_decl_c");
lbessard@70: /* Please read the comments inside the var1_init_decl_c
lbessard@70: * visitor, as they apply here too.
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol->type_specification);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: symbol->global_var_spec->accept(*this);
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /*| global_var_name location */
lbessard@70: // SYM_REF2(global_var_spec_c, global_var_name, location)
lbessard@70: void *visit(global_var_spec_c *symbol) {
lbessard@70: TRACE("global_var_spec_c");
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: switch(wanted_varformat) {
lbessard@70: case local_vf:
laurent@217: s4o.print(s4o.indent_spaces);
laurent@217: s4o.print(DECLARE_GLOBAL_LOCATION);
laurent@217: s4o.print("(");
lbessard@195: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
lbessard@195: symbol->location->accept(*this);
laurent@217: s4o.print(")\n");
lbessard@70: if (symbol->global_var_name != NULL) {
lbessard@195: s4o.print(s4o.indent_spaces);
laurent@217: s4o.print(DECLARE_GLOBAL_LOCATED);
laurent@217: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
etisserant@138: if (this->resource_name != NULL) {
etisserant@138: this->resource_name->accept(*this);
etisserant@138: }
laurent@217: s4o.print(",");
lbessard@70: symbol->global_var_name->accept(*this);
laurent@217: s4o.print(")\n");
lbessard@70: }
lbessard@70: break;
lbessard@70:
lbessard@70: case constructorinit_vf:
lbessard@70: if (symbol->global_var_name != NULL) {
Laurent@706: s4o.print(nv->get());
Laurent@706: s4o.print(INIT_GLOBAL_LOCATED);
Laurent@706: s4o.print("(");
Laurent@706: if (this->resource_name != NULL) {
Laurent@706: this->resource_name->accept(*this);
Laurent@706: }
laurent@217: s4o.print(",");
etisserant@128: symbol->global_var_name->accept(*this);
Laurent@706: s4o.print(",");
Laurent@706: symbol->location->accept(*this);
laurent@221: print_retain();
Laurent@706: s4o.print(")");
laurent@217: }
lbessard@70: if (this->current_var_init_symbol != NULL) {
Laurent@706: s4o.print(nv->get());
Laurent@706: s4o.print(INIT_GLOBAL);
Laurent@706: s4o.print("(");
Laurent@706: this->current_var_type_symbol->accept(*this);
Laurent@706: s4o.print(",");
Laurent@706: if (symbol->global_var_name != NULL)
Laurent@706: symbol->global_var_name->accept(*this);
Laurent@706: else
Laurent@706: symbol->location->accept(*this);
Laurent@706: s4o.print(",");
Laurent@706: s4o.print(INITIAL_VALUE);
Laurent@706: s4o.print("(");
Laurent@706: this->current_var_init_symbol->accept(*this);
Laurent@706: s4o.print(")");
Laurent@706: print_retain();
Laurent@706: s4o.print(")");
laurent@217: }
lbessard@70: break;
laurent@396:
laurent@396: case globalprototype_vf:
laurent@396: s4o.print(s4o.indent_spaces);
laurent@396: s4o.print(DECLARE_GLOBAL_PROTOTYPE);
Laurent@706: s4o.print("(");
Laurent@706: this->current_var_type_symbol->accept(*this);
Laurent@706: s4o.print(",");
Laurent@706: if (symbol->global_var_name != NULL)
Laurent@706: symbol->global_var_name->accept(*this);
Laurent@706: else
Laurent@706: symbol->location->accept(*this);
Laurent@706: s4o.print(")\n");
laurent@396: break;
laurent@396:
lbessard@70: default:
lbessard@70: ERROR;
lbessard@70: } /* switch() */
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /* AT direct_variable */
lbessard@70: // SYM_REF2(location_c, direct_variable, unused)
lbessard@70: void *visit(location_c *symbol) {
lbessard@70: TRACE("location_c");
lbessard@70: return symbol->direct_variable->accept(*this);
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /*| global_var_list ',' global_var_name */
lbessard@70: //SYM_LIST(global_var_list_c)
lbessard@70: void *visit(global_var_list_c *symbol) {
lbessard@70: TRACE("global_var_list_c");
lbessard@70: list_c *list = dynamic_cast(symbol);
Laurent@706: bool is_fb = type_is_fb(this->current_var_type_symbol);
lbessard@70: /* should NEVER EVER occur!! */
lbessard@70: if (list == NULL) ERROR;
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: switch (wanted_varformat) {
lbessard@70: case local_vf:
lbessard@70: case localinit_vf:
lbessard@70: for(int i = 0; i < list->n; i++) {
Laurent@706: s4o.print(s4o.indent_spaces);
Laurent@706: if (is_fb)
Laurent@706: s4o.print(DECLARE_GLOBAL_FB);
Laurent@706: else
Laurent@706: s4o.print(DECLARE_GLOBAL);
Laurent@706: s4o.print("(");
lbessard@70: this->current_var_type_symbol->accept(*this);
laurent@217: s4o.print(",");
etisserant@138: if(this->resource_name != NULL)
etisserant@138: this->resource_name->accept(*this);
laurent@217: s4o.print(",");
lbessard@70: list->elements[i]->accept(*this);
laurent@217: s4o.print(")\n");
lbessard@70: }
lbessard@70: break;
lbessard@70:
lbessard@70: case constructorinit_vf:
Laurent@706: if (this->current_var_init_symbol != NULL || is_fb) {
lbessard@70: for(int i = 0; i < list->n; i++) {
lbessard@70: s4o.print(nv->get());
lbessard@70:
Laurent@706: if (is_fb)
Laurent@706: s4o.print(INIT_GLOBAL_FB);
Laurent@706: else
Laurent@706: s4o.print(INIT_GLOBAL);
laurent@217: s4o.print("(");
laurent@377: this->current_var_type_symbol->accept(*this);
laurent@377: s4o.print(",");
lbessard@70: list->elements[i]->accept(*this);
Laurent@706: if (this->current_var_init_symbol != NULL) {
Laurent@706: s4o.print(",");
Laurent@706: s4o.print(INITIAL_VALUE);
Laurent@706: s4o.print("(");
Laurent@706: this->current_var_init_symbol->accept(*this);
Laurent@706: s4o.print(")");
Laurent@706: }
laurent@221: print_retain();
laurent@217: s4o.print(")");
lbessard@70: #if 0
Laurent@706: /* The following code would be for globalinit_vf !!
Laurent@706: * But it is not currently required...
Laurent@706: */
Laurent@706: s4o.print(s4o.indent_spaces + "__ext_element_c<");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print("> ");
lbessard@70: if (this->globalnamespace != NULL) {
lbessard@70: this->globalnamespace->accept(*this);
lbessard@70: s4o.print("::");
lbessard@70: }
lbessard@70: list->elements[i]->accept(*this);
lbessard@70:
lbessard@70: if (this->current_var_init_symbol != NULL) {
lbessard@70: s4o.print(" = ");
lbessard@70: s4o.print("__ext_element_c<");
lbessard@70: this->current_var_type_symbol->accept(*this);
lbessard@70: s4o.print(">(");
lbessard@70: this->current_var_init_symbol->accept(*this);
lbessard@70: s4o.print(")");
Laurent@706: }
lbessard@70: s4o.print(";\n");
lbessard@70: #endif
lbessard@70: }
lbessard@70: }
lbessard@70: break;
lbessard@70:
laurent@396: case globalprototype_vf:
laurent@396: for(int i = 0; i < list->n; i++) {
laurent@396: s4o.print(s4o.indent_spaces);
laurent@396: s4o.print(DECLARE_GLOBAL_PROTOTYPE);
laurent@396: s4o.print("(");
laurent@396: this->current_var_type_symbol->accept(*this);
laurent@396: s4o.print(",");
laurent@396: list->elements[i]->accept(*this);
laurent@396: s4o.print(")\n");
laurent@396: }
laurent@396: break;
laurent@396:
lbessard@70: default:
lbessard@70: ERROR; /* not supported, and not needed either... */
lbessard@70: }
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: #if 0
lbessard@70: /* var1_list ':' single_byte_string_spec */
lbessard@70: SYM_REF2(single_byte_string_var_declaration_c, var1_list, single_byte_string_spec)
lbessard@70:
lbessard@70: /* STRING ['[' integer ']'] [ASSIGN single_byte_character_string] */
lbessard@70: /* integer ->may be NULL ! */
lbessard@70: /* single_byte_character_string ->may be NULL ! */
lbessard@70: SYM_REF2(single_byte_string_spec_c, integer, single_byte_character_string)
lbessard@70:
lbessard@70: /* var1_list ':' double_byte_string_spec */
lbessard@70: SYM_REF2(double_byte_string_var_declaration_c, var1_list, double_byte_string_spec)
lbessard@70:
lbessard@70: /* WSTRING ['[' integer ']'] [ASSIGN double_byte_character_string] */
lbessard@70: /* integer ->may be NULL ! */
lbessard@70: /* double_byte_character_string ->may be NULL ! */
lbessard@70: SYM_REF2(double_byte_string_spec_c, integer, double_byte_character_string)
lbessard@70:
lbessard@70: /*| VAR [RETAIN|NON_RETAIN] incompl_located_var_decl_list END_VAR */
lbessard@70: /* option ->may be NULL ! */
lbessard@70: SYM_REF2(incompl_located_var_declarations_c, option, incompl_located_var_decl_list)
lbessard@70:
lbessard@70: /* helper symbol for incompl_located_var_declarations */
lbessard@70: /*| incompl_located_var_decl_list incompl_located_var_decl ';' */
lbessard@70: SYM_LIST(incompl_located_var_decl_list_c)
lbessard@70:
lbessard@70: /* variable_name incompl_location ':' var_spec */
lbessard@70: SYM_REF4(incompl_located_var_decl_c, variable_name, incompl_location, var_spec, unused)
lbessard@70:
lbessard@70: /* AT incompl_location_token */
lbessard@70: SYM_TOKEN(incompl_location_c)
lbessard@70: #endif
lbessard@70:
lbessard@70:
lbessard@70: void *visit(falling_edge_option_c *symbol) {
lbessard@70: // TO DO ...
lbessard@70: s4o.print("F_EDGE");
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: void *visit(var1_init_decl_c *symbol) {
lbessard@70: TRACE("var1_init_decl_c");
lbessard@70: /* We have several implementation alternatives here...
lbessard@70: *
lbessard@70: * The issue is that generation of c code
lbessard@70: * based on the abstract syntax tree requires the reversal
lbessard@70: * of the symbol order compared to st. For e.g.:
lbessard@70: * (ST) a, b, c: INT := 98;
lbessard@70: * (C ) int a=98, b=98, c=98;
lbessard@70: * The spec_init contains the references to 'INT' and '98'.
lbessard@70: * The var1_list contains the references to 'a', 'b', and 'c'.
lbessard@70: * The var1_init_decl_c contains the references to spec_init and var1_list.
lbessard@70: *
lbessard@70: * For c code generation, the var1_init_decl_c visitor
lbessard@70: * would need to access the internals of other classes
lbessard@70: * (e.g. the simple_spec_init_c).
lbessard@70: *
lbessard@70: * We can do this using one of three methods:
lbessard@70: * 1) Create the abstract syntax tree differently;
lbessard@70: * 2) Access other classes from within the var1_init_decl_c;
lbessard@70: * 3) Pass info between the visitors using global variables
lbessard@70: * only acessible by this class (private vars)
lbessard@70: *
lbessard@70: * In 1), the abstract syntax tree would be built so that
lbessard@70: * var1_init_decl_c would contain direct references to
lbessard@70: * var1_list_c, to the var type 'INT' and to the initialiser '98'
lbessard@70: * (as per the example above).
lbessard@70: *
lbessard@70: * 2) would have several sub-options to obtain the references
lbessard@70: * to 'INT' and '98' from within var1_init_decl_c.
lbessard@70: * In 2a), the var1_init_decl_c would use dynamic casts to determine
lbessard@70: * the class of spec_init (simple_spec_init_c, subrange_spec_init_c or
lbessard@70: * enumerated_spec_init_c), and from there obtain the 'INT' and '98'
lbessard@70: * In 2b) var1_init_decl_c would have one reference for each
lbessard@70: * simple_spec_init_c, subrange_spec_init_c and enumerated_spec_init_c,
lbessard@70: * the apropriate one being initialised by the var1_init_decl_c constructor.
lbessard@70: * Note that the constructor would use dynamic casts. In essence, we
lbessard@70: * would merely be changing the location of the code with the
lbessard@70: * dynamic casts.
lbessard@70: * In 2c) we would use three overloaded constructors for var1_init_decl_c
lbessard@70: * one each for simple_spec_init_c, etc... This implies
lbessard@70: * use type specific pointers to each symbol in the bison
lbessard@70: * parser, instead of simply using a symbol_c * for all symbols;
lbessard@70: *
lbessard@70: * In 3), we use two global but private variables with references to
lbessard@70: * 'INT' and '98', that would be initiliased by the visitors to
lbessard@70: * simple_spec_init_c, subrange_spec_init_c and enumerated_spec_init_c.
lbessard@70: * The visitor to var1_list_c would then use the references in the global
lbessard@70: * variables.
lbessard@70: *
lbessard@70: * I (Mario) have chosen to use 3).
lbessard@70: */
lbessard@70:
lbessard@70: /* Start off by setting the current_var_type_symbol and
lbessard@70: * current_var_init_symbol private variables...
lbessard@70: */
lbessard@70: update_type_init(symbol->spec_init);
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: symbol->var1_list->accept(*this);
lbessard@70:
lbessard@70: /* Values no longer in scope, and therefore no longer used.
lbessard@70: * Make an effort to keep them set to NULL when not in use
lbessard@70: * in order to catch bugs as soon as possible...
lbessard@70: */
lbessard@70: void_type_init();
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: void *visit(var1_list_c *symbol) {
lbessard@70: TRACE("var1_list_c");
lbessard@70: declare_variables(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /* intermediate helper symbol for:
lbessard@70: * - non_retentive_var_decls
lbessard@70: * - output_declarations
lbessard@70: */
lbessard@70: void *visit(var_init_decl_list_c *symbol) {
lbessard@70: TRACE("var_init_decl_list_c");
lbessard@70: return print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /**************************************/
lbessard@70: /* B.1.5 - Program organization units */
lbessard@70: /**************************************/
lbessard@70: /***********************/
lbessard@70: /* B 1.5.1 - Functions */
lbessard@70: /***********************/
lbessard@70: /* The missing function_declaration_c
lbessard@70: * is handled in derived classes
lbessard@70: */
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /* intermediate helper symbol for function_declaration */
lbessard@70: void *visit(var_declarations_list_c *symbol) {
lbessard@70: TRACE("var_declarations_list_c");
lbessard@70: return print_list(symbol);
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: void *visit(function_var_decls_c *symbol) {
lbessard@70: TRACE("function_var_decls_c");
lbessard@70:
lbessard@70: if ((wanted_vartype & private_vt) != 0) {
lbessard@70: /*
lbessard@70: // TO DO ...
lbessard@70: if (symbol->option != NULL)
lbessard@70: symbol->option->accept(*this);
lbessard@70: */
lbessard@70: current_vartype = private_vt;
lbessard@70: symbol->decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* intermediate helper symbol for function_var_decls */
lbessard@70: void *visit(var2_init_decl_list_c *symbol) {
lbessard@70: TRACE("var2_init_decl_list_c");
lbessard@70: print_list(symbol);
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /*****************************/
lbessard@70: /* B 1.5.2 - Function Blocks */
lbessard@70: /*****************************/
lbessard@70:
lbessard@70: /* The missing function_block_declaration_c
lbessard@70: * is handled in derived classes
lbessard@70: */
lbessard@70:
lbessard@70:
lbessard@70: /* VAR_TEMP temp_var_decl_list END_VAR */
lbessard@70: void *visit(temp_var_decls_c *symbol) {
lbessard@70: TRACE("temp_var_decls_c");
lbessard@70: if ((wanted_vartype & temp_vt) != 0) {
lbessard@70: current_vartype = temp_vt;
lbessard@70: symbol->var_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* intermediate helper symbol for temp_var_decls */
lbessard@70: void *visit(temp_var_decls_list_c *symbol) {
lbessard@70: TRACE("temp_var_decls_list_c");
lbessard@70: return print_list(symbol);
lbessard@70: }
lbessard@70:
lbessard@70: /* VAR NON_RETAIN var_init_decl_list END_VAR */
lbessard@70: void *visit(non_retentive_var_decls_c *symbol) {
lbessard@70: TRACE("non_retentive_var_decls_c");
lbessard@70: // TODO ... guarantee the non-retain semantics!
lbessard@70: if ((wanted_vartype & private_vt) != 0) {
lbessard@70: current_vartype = private_vt;
lbessard@70: symbol->var_decl_list->accept(*this);
lbessard@70: current_vartype = none_vt;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /**********************/
lbessard@70: /* B 1.5.3 - Programs */
lbessard@70: /**********************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /*********************************************/
lbessard@70: /* B.1.6 Sequential function chart elements */
lbessard@70: /*********************************************/
lbessard@70:
lbessard@70: /********************************/
lbessard@70: /* B 1.7 Configuration elements */
lbessard@70: /********************************/
lbessard@70: /* Programs instantiated inside configurations are declared as variables!! */
lbessard@70:
lbessard@70: /*
lbessard@70: CONFIGURATION configuration_name
lbessard@70: optional_global_var_declarations
lbessard@70: (resource_declaration_list | single_resource_declaration)
lbessard@70: optional_access_declarations
lbessard@70: optional_instance_specific_initializations
lbessard@70: END_CONFIGURATION
lbessard@70: */
lbessard@70: /*
lbessard@70: SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
lbessard@70: */
lbessard@70: void *visit(configuration_declaration_c *symbol) {
lbessard@70: TRACE("configuration_declaration_c");
lbessard@70:
lbessard@70: if(symbol->global_var_declarations)
lbessard@70: symbol->global_var_declarations->accept(*this); // will contain VAR_GLOBAL declarations!!
lbessard@70: symbol->resource_declarations->accept(*this); // will contain PROGRAM declarations!!
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* helper symbol for configuration_declaration */
lbessard@70: // SYM_LIST(resource_declaration_list_c)
lbessard@70: void *visit(resource_declaration_list_c *symbol) {
lbessard@70: TRACE("resource_declaration_list_c");
lbessard@70:
lbessard@70: return print_list(symbol);
lbessard@70: }
lbessard@70:
lbessard@70: /*
lbessard@70: RESOURCE resource_name ON resource_type_name
lbessard@70: optional_global_var_declarations
lbessard@70: single_resource_declaration
lbessard@70: END_RESOURCE
lbessard@70: */
lbessard@70: // SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
lbessard@70: void *visit(resource_declaration_c *symbol) {
lbessard@70: TRACE("resource_declaration_c");
etisserant@138: //// Not used anymore. Even resource list are processed as single resource
etisserant@138: // if ((wanted_vartype & resource_vt) != 0) {
etisserant@138: // s4o.print(s4o.indent_spaces + "struct {\n");
etisserant@138: // s4o.indent_right();
etisserant@138: //
etisserant@138: // current_vartype = resource_vt;
etisserant@138: // if (NULL != symbol->global_var_declarations)
etisserant@138: // symbol->global_var_declarations->accept(*this); // will contain VAR_GLOBAL declarations!!
etisserant@138: // if (NULL != symbol->resource_declaration)
etisserant@138: // symbol->resource_declaration->accept(*this); // will contain PROGRAM declarations!!
etisserant@138: // current_vartype = none_vt;
etisserant@138: //
etisserant@138: // s4o.indent_left();
etisserant@138: // s4o.print(s4o.indent_spaces + "} ");
etisserant@138: // symbol->resource_name->accept(*this);
etisserant@138: // s4o.print(";\n");
etisserant@138: // }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* task_configuration_list program_configuration_list */
lbessard@70: // SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
lbessard@70: void *visit(single_resource_declaration_c *symbol) {
lbessard@70: TRACE("single_resource_declaration_c");
lbessard@70:
lbessard@70: if ((wanted_vartype & program_vt) != 0) {
lbessard@70: unsigned int previous_vartype = current_vartype;
lbessard@70: // previous_vartype will be resource_vt
lbessard@70: current_vartype = program_vt;
lbessard@70: symbol->program_configuration_list->accept(*this);
lbessard@70: current_vartype = previous_vartype;
lbessard@70: }
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: /* helper symbol for single_resource_declaration */
lbessard@70: // SYM_LIST(task_configuration_list_c)
lbessard@70:
lbessard@70:
lbessard@70: /* helper symbol for single_resource_declaration */
lbessard@70: /* | program_configuration_list program_configuration ';' */
lbessard@70: // SYM_LIST(program_configuration_list_c)
lbessard@70: void *visit(program_configuration_list_c *symbol) {
lbessard@70: TRACE("program_configuration_list_c");
lbessard@70:
lbessard@70: return print_list(symbol);
lbessard@70: }
lbessard@70:
lbessard@70: /* helper symbol for
lbessard@70: * - access_path
lbessard@70: * - instance_specific_init
lbessard@70: */
lbessard@70: // SYM_LIST(any_fb_name_list_c)
lbessard@70:
lbessard@70: /* [resource_name '.'] global_var_name ['.' structure_element_name] */
lbessard@70: // SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused)
lbessard@70:
lbessard@70: /* prev_declared_program_name '.' symbolic_variable */
lbessard@70: // SYM_REF2(program_output_reference_c, program_name, symbolic_variable)
lbessard@70:
lbessard@70: /* TASK task_name task_initialization */
lbessard@70: // SYM_REF2(task_configuration_c, task_name, task_initialization)
lbessard@70:
lbessard@70: /* '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */
lbessard@70: // SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused)
lbessard@70:
lbessard@70: /* PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */
lbessard@70: // SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused)
lbessard@70: private:
lbessard@70: /* a helper function to the program_configuration_c visitor... */
lbessard@70: void program_constructor_call(program_configuration_c *symbol) {
lbessard@70: program_declaration_c *p_decl = program_type_symtable.find_value(symbol->program_type_name);
lbessard@70:
lbessard@70: if (p_decl == program_type_symtable.end_value())
lbessard@70: /* should never occur. The program being called MUST be in the symtable... */
lbessard@70: ERROR;
lbessard@70:
lbessard@70: symbol->program_name->accept(*this);
lbessard@70: s4o.print("(");
lbessard@70:
lbessard@70: /* loop through each function parameter, find the value we should pass
lbessard@70: * to it, and then output the c equivalent...
lbessard@70: */
lbessard@70: function_param_iterator_c fp_iterator(p_decl);
ccb@202: #if 0
lbessard@70: function_call_param_iterator_c function_call_param_iterator(symbol);
ccb@202: #endif
lbessard@70: identifier_c *param_name;
lbessard@70: nv->push("", ", ");
lbessard@70: for(int i = 1; (param_name = fp_iterator.next()) != NULL; i++) {
lbessard@70:
lbessard@70: symbol_c *param_type = fp_iterator.param_type();
lbessard@70: if (param_type == NULL) ERROR;
lbessard@70:
lbessard@70: function_param_iterator_c::param_direction_t param_direction = fp_iterator.param_direction();
lbessard@70:
lbessard@70: #if 0
lbessard@70: /* Get the value from a foo( = ) style call */
lbessard@70: symbol_c *param_value = function_call_param_iterator.search(param_name);
lbessard@70: #endif
lbessard@70:
lbessard@70: switch (param_direction) {
lbessard@70: case function_param_iterator_c::direction_in:
lbessard@70: case function_param_iterator_c::direction_out:
lbessard@70: case function_param_iterator_c::direction_inout:
lbessard@70: /* ignore them all!! */
lbessard@70: break;
lbessard@70:
lbessard@70: case function_param_iterator_c::direction_extref:
lbessard@70: #if 0
lbessard@70: if (param_value == NULL)
Laurent@706: /* This is illegal in ST and IL languages.
Laurent@706: * All variables declared in a VAR_EXTERNAL __must__
Laurent@706: * be initialised to reference a specific VAR_GLOBAL variable!!
Laurent@706: *
Laurent@706: * The semantic checker should have caught this, we check again just the
Laurent@706: * same (especially since the semantic checker has not yet been written!).
Laurent@706: */
Laurent@706: ERROR;
lbessard@70: s4o.print(nv->get());
lbessard@70: s4o.print("&");
lbessard@70: param_value->accept(*this);
lbessard@70: #endif
Laurent@706: break;
lbessard@70: } /* switch */
lbessard@70: } /* for(...) */
lbessard@70:
lbessard@70: // symbol->parameter_assignment->accept(*this);
lbessard@70: s4o.print(")");
lbessard@70: nv->pop();
lbessard@70: return;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70: public:
lbessard@70: void *visit(program_configuration_c *symbol) {
lbessard@70: TRACE("program_configuration_c");
lbessard@70:
lbessard@70: /* now to produce the c equivalent... */
lbessard@70: switch (wanted_varformat) {
lbessard@70: case local_vf:
lbessard@70: case localinit_vf:
lbessard@70: s4o.print(s4o.indent_spaces);
lbessard@70: symbol->program_type_name->accept(*this);
lbessard@70: s4o.print(" ");
lbessard@70: symbol->program_name->accept(*this);
lbessard@70: if (wanted_varformat == localinit_vf) {
lbessard@70: // TODO...
lbessard@70: // program_call(symbol);
lbessard@70: }
lbessard@70: s4o.print(";\n");
lbessard@70: break;
lbessard@70:
lbessard@70: case constructorinit_vf:
lbessard@70: s4o.print(nv->get());
lbessard@70: program_constructor_call(symbol);
lbessard@70: /*
lbessard@70: symbol->program_name->accept(*this);
lbessard@70: s4o.print("(");
lbessard@70: symbol->prog_conf_elements->accept(*this);
lbessard@70: nv->pop();
lbessard@70: s4o.print(")");
lbessard@70: */
lbessard@70: break;
lbessard@70:
lbessard@70: default:
lbessard@70: ERROR; /* not supported, and not needed either... */
lbessard@70: }
lbessard@70:
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /* prog_conf_elements ',' prog_conf_element */
lbessard@70: //SYM_LIST(prog_conf_elements_c)
lbessard@70: void *visit(prog_conf_elements_c *symbol) {
lbessard@70: TRACE("prog_conf_elements_c");
lbessard@70:
lbessard@70: return print_list(symbol);
lbessard@70: }
lbessard@70:
lbessard@70: /* fb_name WITH task_name */
lbessard@70: //SYM_REF2(fb_task_c, fb_name, task_name)
lbessard@70: void *visit(fb_task_c *symbol) {
lbessard@70: TRACE("fb_task_c");
lbessard@70:
lbessard@70: /* TODO...
lbessard@70: *
lbessard@70: * NOTE: Not yet supported...
lbessard@70: * We do not support allocating specific function blocks declared
lbessard@70: * inside a program to be executed by a different task from the one
lbessard@70: * already executing the program itself.
lbessard@70: * This is mostly because I (Mario) simply do not understand the
lbessard@70: * semantics the standard expects us to implement in this case. It is all
lbessard@70: * very confusing, and very poorly defined in the standard!
lbessard@70: */
lbessard@70: ERROR;
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /* any_symbolic_variable ASSIGN prog_data_source */
lbessard@70: // SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source)
lbessard@70: void *visit(prog_cnxn_assign_c *symbol) {
lbessard@70: TRACE("prog_cnxn_assign_c");
lbessard@70:
lbessard@70: /* TODO... */
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: /* any_symbolic_variable SENDTO data_sink */
lbessard@70: // SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)
lbessard@70: void *visit(prog_cnxn_sendto_c *symbol) {
lbessard@70: TRACE("prog_cnxn_sendto_c");
lbessard@70:
lbessard@70: /* TODO... */
lbessard@70: return NULL;
lbessard@70: }
lbessard@70:
lbessard@70: #if 0
lbessard@70: /* VAR_CONFIG instance_specific_init_list END_VAR_BOGUS */
lbessard@70: SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused)
lbessard@70:
lbessard@70: /* helper symbol for instance_specific_initializations */
lbessard@70: SYM_LIST(instance_specific_init_list_c)
lbessard@70:
lbessard@70: /* resource_name '.' program_name '.' {fb_name '.'}
lbessard@70: ((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization))
lbessard@70: */
lbessard@70: SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization)
lbessard@70:
lbessard@70: /* helper symbol for instance_specific_init */
lbessard@70: /* function_block_type_name ':=' structure_initialization */
lbessard@70: SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization)
lbessard@70:
lbessard@70: #endif
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: /****************************************/
lbessard@70: /* B.2 - Language IL (Instruction List) */
lbessard@70: /****************************************/
lbessard@70: /***********************************/
lbessard@70: /* B 2.1 Instructions and Operands */
lbessard@70: /***********************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /*******************/
lbessard@70: /* B 2.2 Operators */
lbessard@70: /*******************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70:
lbessard@70: /***************************************/
lbessard@70: /* B.3 - Language ST (Structured Text) */
lbessard@70: /***************************************/
lbessard@70: /***********************/
lbessard@70: /* B 3.1 - Expressions */
lbessard@70: /***********************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /********************/
lbessard@70: /* B 3.2 Statements */
lbessard@70: /********************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /*********************************/
lbessard@70: /* B 3.2.1 Assignment Statements */
lbessard@70: /*********************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /*****************************************/
lbessard@70: /* B 3.2.2 Subprogram Control Statements */
lbessard@70: /*****************************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /********************************/
lbessard@70: /* B 3.2.3 Selection Statements */
lbessard@70: /********************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70: /********************************/
lbessard@70: /* B 3.2.4 Iteration Statements */
lbessard@70: /********************************/
lbessard@70: /* leave for derived classes... */
lbessard@70:
lbessard@70:
lbessard@70:
lbessard@70: }; /* generate_c_vardecl_c */
lbessard@70:
lbessard@70:
lbessard@70: