--- a/stage4/generate_c/search_base_type.cc Sat May 30 16:42:41 2009 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,242 +0,0 @@
-/*
- * (c) 2003 Mario de Sousa
- *
- * Offered to the public under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
- * Public License for more details.
- *
- * This code is made available on the understanding that it will not be
- * used in safety-critical situations without a full and competent review.
- */
-
-/*
- * An IEC 61131-3 IL and ST compiler.
- *
- * Based on the
- * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
- *
- */
-
-
-/* Determine the data type on which another data type is based on.
- * If a new default initial value is given, we DO NOT consider it a
- * new base class, and continue looking further!
- *
- * E.g. TYPE new_int_t : INT; END_TYPE;
- * TYPE new_int2_t : INT = 2; END_TYPE;
- * TYPE new_subr_t : INT (4..5); END_TYPE;
- *
- * new_int_t is really an INT!!
- * new_int2_t is also really an INT!!
- * new_subr_t is also really an INT!!
- */
-class search_base_type_c: public null_visitor_c {
- private:
- symbol_c *current_type_name;
- bool is_subrange;
- bool is_enumerated;
-
- public:
- search_base_type_c(void) {current_type_name = NULL;}
-
- public:
- void *visit(identifier_c *type_name) {
- this->current_type_name = type_name;
- /* look up the type declaration... */
- symbol_c *type_decl = type_symtable.find_value(type_name);
- if (type_decl == type_symtable.end_value())
- /* Type declaration not found!! */
- ERROR;
-
- return type_decl->accept(*this);
- }
-
- bool type_is_subrange(symbol_c* type_decl) {
- this->is_subrange = false;
- type_decl->accept(*this);
- return this->is_subrange;
- }
-
- bool type_is_enumerated(symbol_c* type_decl) {
- this->is_enumerated = false;
- type_decl->accept(*this);
- return this->is_enumerated;
- }
-
-/***********************************/
-/* B 1.3.1 - Elementary Data Types */
-/***********************************/
- void *visit(time_type_name_c *symbol) {return (void *)symbol;}
- void *visit(bool_type_name_c *symbol) {return (void *)symbol;}
- void *visit(sint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(int_type_name_c *symbol) {return (void *)symbol;}
- void *visit(dint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(lint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(usint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(uint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(udint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(ulint_type_name_c *symbol) {return (void *)symbol;}
- void *visit(real_type_name_c *symbol) {return (void *)symbol;}
- void *visit(lreal_type_name_c *symbol) {return (void *)symbol;}
- void *visit(date_type_name_c *symbol) {return (void *)symbol;}
- void *visit(tod_type_name_c *symbol) {return (void *)symbol;}
- void *visit(dt_type_name_c *symbol) {return (void *)symbol;}
- void *visit(byte_type_name_c *symbol) {return (void *)symbol;}
- void *visit(word_type_name_c *symbol) {return (void *)symbol;}
- void *visit(dword_type_name_c *symbol) {return (void *)symbol;}
- void *visit(lword_type_name_c *symbol) {return (void *)symbol;}
- void *visit(string_type_name_c *symbol) {return (void *)symbol;}
- void *visit(wstring_type_name_c *symbol) {return (void *)symbol;}
- void *visit(constant_int_type_name_c *symbol) {return (void *)symbol;}
- void *visit(constant_real_type_name_c *symbol) {return (void *)symbol;}
- void *visit(direct_variable_type_name_c *symbol) {return (void *)symbol;}
- /******************************************************/
- /* Extensions to the base standard as defined in */
- /* "Safety Software Technical Specification, */
- /* Part 1: Concepts and Function Blocks, */
- /* Version 1.0 – Official Release" */
- /* by PLCopen - Technical Committee 5 - 2006-01-31 */
- /******************************************************/
- void *visit(safebool_type_name_c *symbol) {return (void *)symbol;}
-
-/********************************/
-/* B 1.3.3 - Derived data types */
-/********************************/
-/* simple_type_name ':' simple_spec_init */
- void *visit(simple_type_declaration_c *symbol) {
- return symbol->simple_spec_init->accept(*this);
- }
-/* simple_specification ASSIGN constant */
- void *visit(simple_spec_init_c *symbol) {
- return symbol->simple_specification->accept(*this);
- }
-
-/* subrange_type_name ':' subrange_spec_init */
- void *visit(subrange_type_declaration_c *symbol) {
- return symbol->subrange_spec_init->accept(*this);
- }
-
-/* subrange_specification ASSIGN signed_integer */
- void *visit(subrange_spec_init_c *symbol) {
- this->is_subrange = true;
- return symbol->subrange_specification->accept(*this);
- }
-
-/* integer_type_name '(' subrange')' */
- void *visit(subrange_specification_c *symbol) {
- return symbol->integer_type_name->accept(*this);
- }
-
-/* signed_integer DOTDOT signed_integer */
- void *visit(subrange_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* enumerated_type_name ':' enumerated_spec_init */
- void *visit(enumerated_type_declaration_c *symbol) {
- this->current_type_name = symbol->enumerated_type_name;
- return symbol->enumerated_spec_init->accept(*this);
- }
-
-/* enumerated_specification ASSIGN enumerated_value */
- void *visit(enumerated_spec_init_c *symbol) {
- this->is_enumerated = true;
- return symbol->enumerated_specification->accept(*this);
- }
-
-/* helper symbol for enumerated_specification->enumerated_spec_init */
-/* enumerated_value_list ',' enumerated_value */
- void *visit(enumerated_value_list_c *symbol) {
- if (NULL == this->current_type_name) ERROR;
- return (void *)this->current_type_name;
- }
-
-/* enumerated_type_name '#' identifier */
-// SYM_REF2(enumerated_value_c, type, value)
- void *visit(enumerated_value_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* identifier ':' array_spec_init */
- void *visit(array_type_declaration_c *symbol) {
- this->current_type_name = symbol->identifier;
- return symbol->array_spec_init->accept(*this);
- }
-
-/* array_specification [ASSIGN array_initialization} */
-/* array_initialization may be NULL ! */
- void *visit(array_spec_init_c *symbol) {
- return symbol->array_specification->accept(*this);
- }
-
-/* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */
- void *visit(array_specification_c *symbol) {
- if (NULL == this->current_type_name) ERROR;
- return symbol->non_generic_type_name->accept(*this);
- }
-
-/* helper symbol for array_specification */
-/* array_subrange_list ',' subrange */
- void *visit(array_subrange_list_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* array_initialization: '[' array_initial_elements_list ']' */
-/* helper symbol for array_initialization */
-/* array_initial_elements_list ',' array_initial_elements */
- void *visit(array_initial_elements_list_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* integer '(' [array_initial_element] ')' */
-/* array_initial_element may be NULL ! */
- void *visit(array_initial_elements_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* structure_type_name ':' structure_specification */
- /* NOTE: structure_specification will point to either a
- * initialized_structure_c
- * OR A
- * structure_element_declaration_list_c
- */
- void *visit(structure_type_declaration_c *symbol) {
- this->current_type_name = symbol->structure_type_name;
- return symbol->structure_specification->accept(*this);
- }
-
-/* structure_type_name ASSIGN structure_initialization */
-/* structure_initialization may be NULL ! */
- void *visit(initialized_structure_c *symbol) {
- return symbol->structure_type_name->accept(*this);
- }
-
-/* helper symbol for structure_declaration */
-/* structure_declaration: STRUCT structure_element_declaration_list END_STRUCT */
-/* structure_element_declaration_list structure_element_declaration ';' */
- void *visit(structure_element_declaration_list_c *symbol) {
- if (NULL == this->current_type_name) ERROR;
- return (void *)symbol;
- }
-
-/* structure_element_name ':' *_spec_init */
- void *visit(structure_element_declaration_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* helper symbol for structure_initialization */
-/* structure_initialization: '(' structure_element_initialization_list ')' */
-/* structure_element_initialization_list ',' structure_element_initialization */
- void *visit(structure_element_initialization_list_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* structure_element_name ASSIGN value */
- void *visit(structure_element_initialization_c *symbol) {ERROR; return NULL;} /* should never get called... */
-
-/* string_type_name ':' elementary_string_type_name string_type_declaration_size string_type_declaration_init */
-/*
-SYM_REF4(string_type_declaration_c, string_type_name,
- elementary_string_type_name,
- string_type_declaration_size,
- string_type_declaration_init) // may be == NULL!
-*/
- void *visit(string_type_declaration_c *symbol) {return symbol;}
-
-
-};
-
-
-
-