diff -r 697562a5da7c -r 1622dc05c6ca search_utils/search_utils.cc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/search_utils/search_utils.cc Tue May 26 18:04:27 2009 +0200 @@ -0,0 +1,289 @@ +/* + * (c) 2009 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) + * + */ + + +/* + * This is the main stage 3a file. + * + * In stage 3a some helpful symbol tables are instanciated and populated. + * These symbol tables wll then be used by stage3b and atage4 code generators. + */ + + + + + + +// #include /* required for NULL */ +#include +#include +#include +#include +#include +#include + +#include "../util/symtable.hh" +#include "../util/dsymtable.hh" +#include "../absyntax/visitor.hh" + + + +//#define DEBUG +#ifdef DEBUG +#define TRACE(classname) printf("\n____%s____\n",classname); +#else +#define TRACE(classname) +#endif + +#define ERROR error_exit(__FILE__,__LINE__) +/* function defined in main.cc */ +extern void error_exit(const char *file_name, int line_no); + + + + + +/* A symbol table with all globally declared functions... */ +function_declaration_c null_symbol1(NULL,NULL,NULL,NULL); +dsymtable_c function_symtable; + +/* A symbol table with all globally declared functions block types... */ +function_block_declaration_c null_symbol2(NULL,NULL,NULL); +symtable_c function_block_type_symtable; + +/* A symbol table with all globally declared program types... */ +program_declaration_c null_symbol3(NULL,NULL,NULL); +symtable_c program_type_symtable; + +/* A symbol table with all user declared type definitions... */ +/* Note that function block types and program types have their + * own symbol tables, so do not get placed in this symbol table! + */ +symbol_c null_symbol4; +symtable_c type_symtable; + + + +/***********************************************************************/ +/***********************************************************************/ +/***********************************************************************/ +/***********************************************************************/ + +/* +#include "spec_init_separator.cc" +#include "function_param_iterator.cc" +#include "function_call_iterator.cc" +#include "function_call_param_iterator.cc" +#include "type_initial_value.cc" +#include "search_fb_instance_decl.cc" +#include "search_fb_typedecl.cc" +#include "search_base_type.cc" +#include "search_var_instance_decl.cc" +#include "decompose_var_instance_name.cc" +#include "search_varfb_instance_type.cc" +#include "search_constant_type.cc" +#include "search_expression_type.cc" + +#include "generate_c_base.cc" +#include "generate_c_typedecl.cc" +#include "generate_c_sfcdecl.cc" +#include "generate_c_vardecl.cc" +#include "generate_c_configbody.cc" +#include "generate_location_list.cc" +#include "generate_var_list.cc" +*/ + +/***********************************************************************/ +/***********************************************************************/ +/***********************************************************************/ +/***********************************************************************/ +/***********************************************************************/ + + +class populate_symtables_c: public iterator_visitor_c { + + public: + populate_symtables_c(void) {}; + virtual ~populate_symtables_c(void) {} + + + public: + +/*************************/ +/* B.1 - Common elements */ +/*************************/ +/*******************************************/ +/* B 1.1 - Letters, digits and identifiers */ +/*******************************************/ +/*********************/ +/* B 1.2 - Constants */ +/*********************/ +/******************************/ +/* B 1.2.1 - Numeric Literals */ +/******************************/ +/*******************************/ +/* B.1.2.2 Character Strings */ +/*******************************/ +/***************************/ +/* B 1.2.3 - Time Literals */ +/***************************/ +/************************/ +/* B 1.2.3.1 - Duration */ +/************************/ +/************************************/ +/* B 1.2.3.2 - Time of day and Date */ +/************************************/ +/**********************/ +/* B.1.3 - Data types */ +/**********************/ +/***********************************/ +/* B 1.3.1 - Elementary Data Types */ +/***********************************/ +/********************************/ +/* B.1.3.2 - Generic data types */ +/********************************/ +/********************************/ +/* B 1.3.3 - Derived data types */ +/********************************/ + +/* subrange_type_name ':' subrange_spec_init */ +void *visit(subrange_type_declaration_c *symbol) { + TRACE("subrange_type_declaration_c"); + type_symtable.insert(symbol->subrange_type_name, symbol->subrange_spec_init); + return NULL; +} + + +/* enumerated_type_name ':' enumerated_spec_init */ +void *visit(enumerated_type_declaration_c *symbol) { + TRACE("enumerated_type_declaration_c"); + type_symtable.insert(symbol->enumerated_type_name, symbol->enumerated_spec_init); + return NULL; +} + + +/* identifier ':' array_spec_init */ +void *visit(array_type_declaration_c *symbol) { + TRACE("array_type_declaration_c"); + type_symtable.insert(symbol->identifier, symbol->array_spec_init); + return NULL; +} + + +/* simple_type_name ':' simple_spec_init */ +void *visit(simple_type_declaration_c *symbol) { + TRACE("simple_type_declaration_c"); + type_symtable.insert(symbol->simple_type_name, symbol->simple_spec_init); + return NULL; +} + + +/* structure_type_name ':' structure_specification */ +void *visit(structure_type_declaration_c *symbol) { + TRACE("structure_type_declaration_c"); + type_symtable.insert(symbol->structure_type_name, symbol->structure_specification); + return NULL; +} + + + +/*********************/ +/* B 1.4 - Variables */ +/*********************/ +/********************************************/ +/* B.1.4.1 Directly Represented Variables */ +/********************************************/ +/*************************************/ +/* B.1.4.2 Multi-element Variables */ +/*************************************/ +/******************************************/ +/* B 1.4.3 - Declaration & Initialisation */ +/******************************************/ +/**************************************/ +/* B.1.5 - Program organization units */ +/**************************************/ +/***********************/ +/* B 1.5.1 - Functions */ +/***********************/ +public: +/* FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ +/* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */ +void *visit(function_declaration_c *symbol) { + TRACE("function_declaration_c"); + function_symtable.insert(symbol->derived_function_name, symbol); + + /* symbol->derived_function_name->accept(*this); */ /* Function name */ + /* symbol->type_name->accept(*this); */ /* return data type */ + /* symbol->var_declarations_list->accept(*this); */ /* Function parameters and variables */ + /* symbol->function_body->accept(*this); */ /* Function body */ + return NULL; +} + + +/*****************************/ +/* B 1.5.2 - Function Blocks */ +/*****************************/ +public: +/* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */ +//SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused) +void *visit(function_block_declaration_c *symbol) { + TRACE("function_block_declaration_c"); + function_block_type_symtable.insert(symbol->fblock_name, symbol); +/* + symbol->fblock_name->accept(*this); + symbol->var_declarations->accept(*this); + symbol->fblock_body->accept(*this); +*/ + return NULL; +} + + +/**********************/ +/* B 1.5.3 - Programs */ +/**********************/ +public: +/* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */ +//SYM_REF4(program_declaration_c, program_type_name, var_declarations, function_block_body, unused) +void *visit(program_declaration_c *symbol) { + TRACE("program_declaration_c"); + program_type_symtable.insert(symbol->program_type_name, symbol); +/* + symbol->program_type_name->accept(*this); + symbol->var_declarations->accept(*this); + symbol->function_block_body->accept(*this); +*/ + return NULL; +} + +}; /* populate_symtables_c */ + + + + + +void search_utils_init(symbol_c *tree_root) { + populate_symtables_c populate_symbols; + + tree_root->accept(populate_symbols); +}