absyntax_utils/search_var_instance_decl.cc
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Tue, 28 Jun 2016 13:34:29 +0000
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/*
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 *  matiec - a compiler for the programming languages defined in IEC 61131-3
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 *
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 *  Copyright (C) 2003-2011  Mario de Sousa (msousa@fe.up.pt)
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 *  Copyright (C) 2007-2011  Laurent Bessard and Edouard Tisserant
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 *
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 *  This program is free software: you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation, either version 3 of the License, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 *
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 * This code is made available on the understanding that it will not be
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 * used in safety-critical situations without a full and competent review.
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 */
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/*
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 * An IEC 61131-3 compiler.
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 *
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 * Based on the
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 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
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 *
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 */
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/* Search in a VAR* END_VAR declaration for the delcration of the specified variable instance. 
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 * Will return:
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 *     - the declaration itself (get_decl() )
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 *     - the type of declaration in which the variable was declared (get_vartype() )
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 *
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 * The variable instance may NOT be a member of a structure of a memeber
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 * of a structure of an element of an array of ...
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 *
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 * For example, considering the following 'variables':
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 *    window.points[1].coordinate.x
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 *    window.points[1].colour
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 *    offset[99]
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 *
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 *   passing a reference to 'points', 'points[1]', 'points[1].colour', 'colour'
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 *    ARE NOT ALLOWED!
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 *
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 * This class must only be passed the name of the variable that will appear
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 * in the variable declaration. In the above examples, this would be
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 *   'window.points[1].coordinate.x'
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 *   'window.points[1].coordinate'
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 *   'window.points[1]'
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 *   'window'
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 *   'window.points[1].colour'
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 *   'offset'
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 *   'offset[99]'
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 *
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 *
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 */
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/* Note: 
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 * Determining the declaration type of a specific variable instance (including
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 * function block instances) really means determining whether the variable was declared in a
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 *  VAR_INPUT
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 *  VAR_OUTPUT
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 *  VAR_IN_OUT
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 *  VAR
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 *  VAR_TEMP
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 *  VAR_EXTERNAL
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 *  VAR_GLOBAL
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 *  VAR <var_name> AT <location>   -> Located variable!
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 * 
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 */
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/* Note:
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 *  The current_type_decl that this class returns may reference the
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 * name of a type, or the type declaration itself!
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 * For an example of the first, consider a variable declared as ...
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 * x : AAA;
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 * where the AAA type is previously declared as whatever.
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 * For an example of the second, consider a variable declared as ...
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 * x : array of int [10];  ---->  is allowed
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 *
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 * If it is the first, we will return a reference to the name, if the second
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 * we return a reference to the declaration!!
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 */
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#include "absyntax_utils.hh"
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search_var_instance_decl_c::search_var_instance_decl_c(symbol_c *search_scope) {
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  this->current_vartype = none_vt;
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  this->search_scope = search_scope;
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  this->search_name = NULL;
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  this->current_type_decl = NULL;
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  this->current_option = none_opt;
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}
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symbol_c *search_var_instance_decl_c::get_decl(symbol_c *variable) {
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
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  if (NULL == search_scope) return NULL; // NOTE: This is not an ERROR! declaration_check_c, for e.g., relies on this returning NULL!
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  return (symbol_c *)search_scope->accept(*this);
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}
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symbol_c *search_var_instance_decl_c::get_basetype_decl(symbol_c *variable) {
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  return search_base_type_c::get_basetype_decl(get_decl(variable));
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}
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search_var_instance_decl_c::vt_t search_var_instance_decl_c::get_vartype(symbol_c *variable) {
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
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  if (NULL == search_scope) ERROR;
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  search_scope->accept(*this);
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  return this->current_vartype;
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}
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536
563b013ec670 Change constants into enums.
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search_var_instance_decl_c::opt_t search_var_instance_decl_c::get_option(symbol_c *variable) {
507
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  this->current_vartype = none_vt;
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  this->current_option  = none_opt;
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  this->search_name = get_var_name_c::get_name(variable);
812
6679b6b21214 Partial fix to VAR_EXTERN vs VAR_GLOBAL check. Now considers globals declared in resources too. TODO: recursively check FB declared in the program.
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  if (NULL == search_scope) ERROR;
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  search_scope->accept(*this);
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  return this->current_option;
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}
417
d48f53715f77 Re-write of stage3 code (done by Manuele and I), re-write of search_varfb_instance_type_c (done by myself), and several other bug fixes.
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531
e7d6f28fc882 Make temporary fix to is_complex() method.
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e7d6f28fc882 Make temporary fix to is_complex() method.
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e7d6f28fc882 Make temporary fix to is_complex() method.
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181
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/***************************/
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/* B 0 - Programming Model */
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/***************************/
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void *search_var_instance_decl_c::visit(library_c *symbol) {
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  /* we do not want to search multiple declaration scopes,
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   * so we do not visit all the functions, function blocks, etc...
181
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   */
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  return NULL;
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}
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/******************************************/
217
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/* B 1.4.3 - Declaration & Initialization */
181
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/******************************************/
217
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181
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/* edge -> The F_EDGE or R_EDGE directive */
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// SYM_REF2(edge_declaration_c, edge, var1_list)
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// TODO
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void *search_var_instance_decl_c::visit(constant_option_c *symbol) {
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  current_option = constant_opt;
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  return NULL;
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}
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void *search_var_instance_decl_c::visit(retain_option_c *symbol) {
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  current_option = retain_opt;
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  return NULL;
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}
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void *search_var_instance_decl_c::visit(non_retain_option_c *symbol) {
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  current_option = non_retain_opt;
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  return NULL;
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}
181
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void *search_var_instance_decl_c::visit(input_declarations_c *symbol) {
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  current_vartype = input_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)  
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    symbol->option->accept(*this);
181
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  void *res = symbol->input_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/* VAR_OUTPUT [RETAIN | NON_RETAIN] var_init_decl_list END_VAR */
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/* option -> may be NULL ! */
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void *search_var_instance_decl_c::visit(output_declarations_c *symbol) {
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  current_vartype = output_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/*  VAR_IN_OUT var_declaration_list END_VAR */
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void *search_var_instance_decl_c::visit(input_output_declarations_c *symbol) {
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  current_vartype = inoutput_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
181
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  void *res = symbol->var_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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  }
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  return res;
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}
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202
da1a8186f86f Initial (very rough) version of semantic checker (stage3)
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/* ENO : BOOL */
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void *search_var_instance_decl_c::visit(eno_param_declaration_c *symbol) {
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  if (compare_identifiers(symbol->name, search_name) == 0)
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    return symbol->type;
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  return NULL;
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   215
}
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da1a8186f86f Initial (very rough) version of semantic checker (stage3)
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   217
181
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/* VAR [CONSTANT] var_init_decl_list END_VAR */
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/* option -> may be NULL ! */
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/* helper symbol for input_declarations */
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void *search_var_instance_decl_c::visit(var_declarations_c *symbol) {
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  current_vartype = private_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*  VAR RETAIN var_init_decl_list END_VAR */
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void *search_var_instance_decl_c::visit(retentive_var_declarations_c *symbol) {
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  current_vartype = private_vt;
507
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  current_option  = retain_opt;
181
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  void *res = symbol->var_init_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*  VAR [CONSTANT|RETAIN|NON_RETAIN] located_var_decl_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(located_var_declarations_c, option, located_var_decl_list)
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void *search_var_instance_decl_c::visit(located_var_declarations_c *symbol) {
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  current_vartype = located_vt;
507
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->located_var_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
507
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    current_option  = none_opt;
181
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  }
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  return res;
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}
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/*| VAR_EXTERNAL [CONSTANT] external_declaration_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(external_var_declarations_c, option, external_declaration_list)
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void *search_var_instance_decl_c::visit(external_var_declarations_c *symbol) {
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  current_vartype = external_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->external_declaration_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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    current_option = none_opt;
181
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  }
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  return res;
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}
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/*| VAR_GLOBAL [CONSTANT|RETAIN] global_var_decl_list END_VAR */
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/* option -> may be NULL ! */
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//SYM_REF2(global_var_declarations_c, option, global_var_decl_list)
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void *search_var_instance_decl_c::visit(global_var_declarations_c *symbol) {
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  current_vartype = global_vt;
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  current_option  = none_opt; /* not really required. Just to make the code more readable */
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  if (NULL != symbol->option)
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    symbol->option->accept(*this);
181
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  void *res = symbol->global_var_decl_list->accept(*this);
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  if (res == NULL) {
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    current_vartype = none_vt;
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    current_option = none_opt;
181
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  }
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  return res;
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}
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   293
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/* var1_list is one of the following...
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 *    simple_spec_init_c *
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 *    subrange_spec_init_c *
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 *    enumerated_spec_init_c *
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 */
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// SYM_REF2(var1_init_decl_c, var1_list, spec_init)
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void *search_var_instance_decl_c::visit(var1_init_decl_c *symbol) {
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  current_type_decl = symbol->spec_init;
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  return symbol->var1_list->accept(*this);
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}
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   304
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/* var1_list ',' variable_name */
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// SYM_LIST(var1_list_c)
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void *search_var_instance_decl_c::visit(var1_list_c *symbol) {
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  list_c *list = symbol;
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  for(int i = 0; i < list->n; i++) {
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    if (compare_identifiers(list->elements[i], search_name) == 0)
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   /* by now, current_type_decl should be != NULL */
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      return current_type_decl;
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  }
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  return NULL;
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}
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/* name_list ':' function_block_type_name ASSIGN structure_initialization */
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/* structure_initialization -> may be NULL ! */
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void *search_var_instance_decl_c::visit(fb_name_decl_c *symbol) {
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  // TODO: The following line is wrong! It should be
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  // current_type_decl = symbol->fb_spec_init;
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  //  However, this change will require a check of all callers, to see if they would handle this correctly.
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  //  For now, just keep what we have had historically, and seems to be working.
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  current_type_decl = spec_init_sperator_c::get_spec(symbol->fb_spec_init);
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  return symbol->fb_name_list->accept(*this);
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}
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   327
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/* name_list ',' fb_name */
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void *search_var_instance_decl_c::visit(fb_name_list_c *symbol) {
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  list_c *list = symbol;
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  for(int i = 0; i < list->n; i++) {
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    if (compare_identifiers(list->elements[i], search_name) == 0)
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   333
    /* by now, current_fb_declaration should be != NULL */
181
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      return current_type_decl;
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  }
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  return NULL;
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}
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   338
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/* var1_list ':' array_spec_init */
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// SYM_REF2(array_var_init_decl_c, var1_list, array_spec_init)
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void *search_var_instance_decl_c::visit(array_var_init_decl_c *symbol) {
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  current_type_decl = symbol->array_spec_init;
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  return symbol->var1_list->accept(*this);
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}
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   345
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/*  var1_list ':' initialized_structure */
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// SYM_REF2(structured_var_init_decl_c, var1_list, initialized_structure)
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void *search_var_instance_decl_c::visit(structured_var_init_decl_c *symbol) {
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  current_type_decl = symbol->initialized_structure;
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  return symbol->var1_list->accept(*this);
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}
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   352
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   353
/*  var1_list ':' array_specification */
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   354
// SYM_REF2(array_var_declaration_c, var1_list, array_specification)
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   355
void *search_var_instance_decl_c::visit(array_var_declaration_c *symbol) {
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   356
  current_type_decl = symbol->array_specification;
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   357
  return symbol->var1_list->accept(*this);
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   358
}
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   359
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   360
/*  var1_list ':' structure_type_name */
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   361
// SYM_REF2(structured_var_declaration_c, var1_list, structure_type_name)
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   362
void *search_var_instance_decl_c::visit(structured_var_declaration_c *symbol) {
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   363
  current_type_decl = symbol->structure_type_name;
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   364
  return symbol->var1_list->accept(*this);
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   365
}
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   366
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   367
/*  [variable_name] location ':' located_var_spec_init */
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   368
/* variable_name -> may be NULL ! */
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   369
// SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused)
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// TODO!!
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   371
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   372
/*  global_var_name ':' (simple_specification|subrange_specification|enumerated_specification|array_specification|prev_declared_structure_type_name|function_block_type_name */
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// SYM_REF2(external_declaration_c, global_var_name, specification)
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void *search_var_instance_decl_c::visit(external_declaration_c *symbol) {
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  if (compare_identifiers(symbol->global_var_name, search_name) == 0)
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   376
      return symbol->specification;
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  return NULL;
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   378
}
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   379
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   380
/*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */
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   381
/* type_specification ->may be NULL ! */
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   382
// SYM_REF2(global_var_decl_c, global_var_spec, type_specification)
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   383
void *search_var_instance_decl_c::visit(global_var_decl_c *symbol) {
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   384
  if (symbol->type_specification != NULL) {
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   385
    current_type_decl = symbol->type_specification;
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   386
    return symbol->global_var_spec->accept(*this);
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   387
  }
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   388
  else
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   389
    return NULL;
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   390
}
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   391
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   392
/*| global_var_name location */
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   393
//SYM_REF2(global_var_spec_c, global_var_name, location)
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   394
void *search_var_instance_decl_c::visit(global_var_spec_c *symbol) {
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   395
  if (symbol->global_var_name != NULL && compare_identifiers(symbol->global_var_name, search_name) == 0)
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   396
      return current_type_decl;
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   397
  else
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   398
    return symbol->location->accept(*this);
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   399
}
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   400
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   401
/*| global_var_list ',' global_var_name */
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   402
//SYM_LIST(global_var_list_c)
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   403
void *search_var_instance_decl_c::visit(global_var_list_c *symbol) {
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parents:
diff changeset
   404
  list_c *list = symbol;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   405
  for(int i = 0; i < list->n; i++) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   406
    if (compare_identifiers(list->elements[i], search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   407
      /* by now, current_type_decl should be != NULL */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   408
      return current_type_decl;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   409
  }
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   410
  return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   411
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   412
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   413
/*  [variable_name] location ':' located_var_spec_init */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   414
/* variable_name -> may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   415
//SYM_REF4(located_var_decl_c, variable_name, location, located_var_spec_init, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   416
void *search_var_instance_decl_c::visit(located_var_decl_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   417
  if (symbol->variable_name != NULL && compare_identifiers(symbol->variable_name, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   418
    return symbol->located_var_spec_init;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   419
  else {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   420
    current_type_decl = symbol->located_var_spec_init;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   421
    return symbol->location->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   422
  }
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   423
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   424
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   425
/*| global_var_spec ':' [located_var_spec_init|function_block_type_name] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   426
/* type_specification ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   427
// SYM_REF2(global_var_decl_c, global_var_spec, type_specification)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   428
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   429
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   430
/*  AT direct_variable */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   431
// SYM_REF2(location_c, direct_variable, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   432
void *search_var_instance_decl_c::visit(location_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   433
  if (compare_identifiers(symbol->direct_variable, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   434
    return current_type_decl;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   435
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   436
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   437
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   438
        
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   439
/*| global_var_list ',' global_var_name */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   440
// SYM_LIST(global_var_list_c)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   441
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   442
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   443
/*  var1_list ':' single_byte_string_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   444
// SYM_REF2(single_byte_string_var_declaration_c, var1_list, single_byte_string_spec)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   445
void *search_var_instance_decl_c::visit(single_byte_string_var_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   446
  current_type_decl = symbol->single_byte_string_spec;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   447
  return symbol->var1_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   448
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   449
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   450
/*  STRING ['[' integer ']'] [ASSIGN single_byte_character_string] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   451
/* integer ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   452
/* single_byte_character_string ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   453
// SYM_REF2(single_byte_string_spec_c, integer, single_byte_character_string)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   454
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   455
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   456
/*  var1_list ':' double_byte_string_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   457
// SYM_REF2(double_byte_string_var_declaration_c, var1_list, double_byte_string_spec)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   458
void *search_var_instance_decl_c::visit(double_byte_string_var_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   459
  current_type_decl = symbol->double_byte_string_spec;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   460
  return symbol->var1_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   461
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   462
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   463
/*  WSTRING ['[' integer ']'] [ASSIGN double_byte_character_string] */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   464
/* integer ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   465
/* double_byte_character_string ->may be NULL ! */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   466
// SYM_REF2(double_byte_string_spec_c, integer, double_byte_character_string)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   467
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   468
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   469
/*  variable_name incompl_location ':' var_spec */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   470
// SYM_REF4(incompl_located_var_decl_c, variable_name, incompl_location, var_spec, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   471
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   472
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   473
/*  AT incompl_location_token */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   474
// SYM_TOKEN(incompl_location_c)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   475
// TODO!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   476
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   477
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   478
/**************************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   479
/* B.1.5 - Program organization units */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   480
/**************************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   481
/***********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   482
/* B 1.5.1 - Functions */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   483
/***********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   484
// SYM_REF4(function_declaration_c, derived_function_name, type_name, var_declarations_list, function_body)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   485
void *search_var_instance_decl_c::visit(function_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   486
  /* functions have a variable named after themselves, to store
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   487
   * the variable that will be returned!!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   488
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   489
  if (compare_identifiers(symbol->derived_function_name, search_name) == 0)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   490
      return symbol->type_name;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   491
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   492
  /* no need to search through all the body, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   493
   * visit the variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   494
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   495
  return symbol->var_declarations_list->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   496
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   497
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   498
/*****************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   499
/* B 1.5.2 - Function Blocks */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   500
/*****************************/
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   501
/*  FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   502
// SYM_REF3(function_block_declaration_c, fblock_name, var_declarations, fblock_body)
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   503
void *search_var_instance_decl_c::visit(function_block_declaration_c *symbol) {
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   504
  /* visit the variable declarations...! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   505
  void *res = symbol->var_declarations->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   506
  if (NULL != res)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   507
    return res;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   508
  
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   509
  /* not yet found, so we look into the body, to see if it is an SFC step! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   510
  return symbol->fblock_body->accept(*this);
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   511
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   512
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   513
/**********************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   514
/* B 1.5.3 - Programs */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   515
/**********************/
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   516
/*  PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   517
// SYM_REF3(program_declaration_c, program_type_name, var_declarations, function_block_body)
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   518
void *search_var_instance_decl_c::visit(program_declaration_c *symbol) {
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   519
  /* visit the variable declarations...! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   520
  void *res = symbol->var_declarations->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   521
  if (NULL != res)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   522
    return res;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   523
  
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   524
  /* not yet found, so we look into the body, to see if it is an SFC step! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   525
  return symbol->function_block_body->accept(*this);
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   526
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   527
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   528
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   529
/*********************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   530
/* B.1.6  Sequential function chart elements */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   531
/*********************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   532
/* | sequential_function_chart sfc_network */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   533
// SYM_LIST(sequential_function_chart_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   534
/* search_var_instance_decl_c inherits from serach_visitor_c, so no need to implement the following method. */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   535
// void *search_var_instance_decl_c::visit(sequential_function_chart_c *symbol) {...}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   536
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   537
/* initial_step {step | transition | action} */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   538
// SYM_LIST(sfc_network_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   539
/* search_var_instance_decl_c inherits from serach_visitor_c, so no need to implement the following method. */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   540
// void *search_var_instance_decl_c::visit(sfc_network_c *symbol) {...}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   541
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   542
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   543
/* INITIAL_STEP step_name ':' action_association_list END_STEP */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   544
// SYM_REF2(initial_step_c, step_name, action_association_list)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   545
void *search_var_instance_decl_c::visit(initial_step_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   546
  if (compare_identifiers(symbol->step_name, search_name) == 0)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   547
      return symbol;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   548
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   549
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   550
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   551
/* STEP step_name ':' action_association_list END_STEP */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   552
// SYM_REF2(step_c, step_name, action_association_list)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   553
void *search_var_instance_decl_c::visit(step_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   554
  if (compare_identifiers(symbol->step_name, search_name) == 0)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   555
      return symbol;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   556
  return NULL;
181
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   557
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   558
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   559
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   560
/********************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   561
/* B 1.7 Configuration elements */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   562
/********************************/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   563
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   564
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   565
CONFIGURATION configuration_name
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   566
   optional_global_var_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   567
   (resource_declaration_list | single_resource_declaration)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   568
   optional_access_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   569
   optional_instance_specific_initializations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   570
END_CONFIGURATION
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   571
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   572
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   573
SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   574
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   575
void *search_var_instance_decl_c::visit(configuration_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   576
  /* no need to search through all the configuration, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   577
   * visit the global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   578
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   579
  if (symbol->global_var_declarations != NULL)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   580
    return symbol->global_var_declarations->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   581
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   582
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   583
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   584
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   585
/*
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   586
RESOURCE resource_name ON resource_type_name
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   587
   optional_global_var_declarations
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   588
   single_resource_declaration
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   589
END_RESOURCE
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   590
*/
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   591
// SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   592
void *search_var_instance_decl_c::visit(resource_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   593
  /* no need to search through all the resource, so we only
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   594
   * visit the global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   595
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   596
  if (symbol->global_var_declarations != NULL)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   597
    return symbol->global_var_declarations->accept(*this);
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   598
  else
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   599
    return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   600
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   601
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   602
/* task_configuration_list program_configuration_list */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   603
// SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   604
void *search_var_instance_decl_c::visit(single_resource_declaration_c *symbol) {
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   605
  /* no need to search through all the resource,
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   606
   * and there is no global variable declarations...!
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   607
   */
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   608
  return NULL;
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   609
}
38d6eb056260 Moving absyntax utility files out from stage4/generate_c
mario
parents:
diff changeset
   610
619
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   611
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   612
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   613
/****************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   614
/* B.2 - Language IL (Instruction List) */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   615
/****************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   616
/***********************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   617
/* B 2.1 Instructions and Operands */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   618
/***********************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   619
/*| instruction_list il_instruction */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   620
// SYM_LIST(instruction_list_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   621
void *search_var_instance_decl_c::visit(instruction_list_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   622
  /* IL code does not contain any variable declarations! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   623
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   624
}
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   625
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   626
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   627
/***************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   628
/* B.3 - Language ST (Structured Text) */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   629
/***************************************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   630
/********************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   631
/* B 3.2 Statements */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   632
/********************/
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   633
// SYM_LIST(statement_list_c)
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   634
void *search_var_instance_decl_c::visit(statement_list_c *symbol) {
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   635
  /* ST code does not contain any variable declarations! */
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   636
  return NULL;
f8c9ac5c529a Support for data types of STEP.T and STEP.X in SFCs
Mario de Sousa <msousa@fe.up.pt>
parents: 536
diff changeset
   637
}