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/*
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* (c) 2003 Mario de Sousa
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*
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* Offered to the public under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* This code is made available on the understanding that it will not be
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* used in safety-critical situations without a full and competent review.
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*/
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/*
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* An IEC 61131-3 IL and ST compiler.
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*
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* Based on the
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
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*
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*/
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/*
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* Build the body of the main function (currently named run() )
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* of the class onto which is mapped a specific CONFIGURATION.
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*
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* This is part of the 4th stage that generates
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* a c++ source program equivalent to the IL and ST
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* code.
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*/
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// #include <stdio.h> /* required for NULL */
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/*
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#include <string>
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#include <iostream>
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#include "../../util/symtable.hh"
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#include "../stage4.hh"
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*/
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class generate_c_configbody_c: public generate_c_base_c {
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public:
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generate_c_configbody_c(stage4out_c *s4o_ptr)
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: generate_c_base_c(s4o_ptr) {
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current_resource_name = NULL;
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}
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virtual ~generate_c_configbody_c(void) {}
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private:
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/* The name of the resource curretnly being processed... */
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symbol_c *current_resource_name;
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/********************************/
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/* B 1.7 Configuration elements */
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/********************************/
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public:
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/*
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CONFIGURATION configuration_name
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optional_global_var_declarations
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(resource_declaration_list | single_resource_declaration)
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optional_access_declarations
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optional_instance_specific_initializations
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END_CONFIGURATION
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*/
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/*
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SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
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*/
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void *visit(configuration_declaration_c *symbol) {
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TRACE("configuration_declaration_c");
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symbol->resource_declarations->accept(*this);
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return NULL;
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}
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/* helper symbol for configuration_declaration */
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// SYM_LIST(resource_declaration_list_c)
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void *visit(resource_declaration_list_c *symbol) {
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TRACE("resource_declaration_list_c");
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return print_list(symbol);
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}
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/*
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RESOURCE resource_name ON resource_type_name
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optional_global_var_declarations
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single_resource_declaration
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END_RESOURCE
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*/
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// SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
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void *visit(resource_declaration_c *symbol) {
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TRACE("resource_declaration_c");
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current_resource_name = symbol->resource_name;
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symbol->resource_declaration->accept(*this);
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current_resource_name = NULL;
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return NULL;
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}
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/* task_configuration_list program_configuration_list */
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// SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
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void *visit(single_resource_declaration_c *symbol) {
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TRACE("single_resource_declaration_c");
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symbol->program_configuration_list->accept(*this);
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return NULL;
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}
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/* helper symbol for single_resource_declaration */
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//SYM_LIST(task_configuration_list_c)
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/* helper symbol for single_resource_declaration */
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//SYM_LIST(program_configuration_list_c)
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void *visit(program_configuration_list_c *symbol) {
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TRACE("program_configuration_list_c");
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return print_list(symbol);
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}
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/* helper symbol for
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* - access_path
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* - instance_specific_init
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*/
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//SYM_LIST(any_fb_name_list_c)
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/* [resource_name '.'] global_var_name ['.' structure_element_name] */
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//SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused)
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/* prev_declared_program_name '.' symbolic_variable */
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//SYM_REF2(program_output_reference_c, program_name, symbolic_variable)
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/* TASK task_name task_initialization */
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//SYM_REF2(task_configuration_c, task_name, task_initialization)
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/* '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */
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//SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused)
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/* PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */
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//SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused)
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void *visit(program_configuration_c *symbol) {
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TRACE("program_configuration_c");
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s4o.print(s4o.indent_spaces);
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if (NULL != current_resource_name) {
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current_resource_name->accept(*this);
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s4o.print(".");
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}
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symbol->program_name->accept(*this);
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s4o.print(".f();\n");
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return NULL;
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}
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/* prog_conf_elements ',' prog_conf_element */
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//SYM_LIST(prog_conf_elements_c)
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/* fb_name WITH task_name */
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//SYM_REF2(fb_task_c, fb_name, task_name)
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// TODO...
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/* any_symbolic_variable ASSIGN prog_data_source */
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//SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source)
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/* any_symbolic_variable SENDTO data_sink */
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//SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)
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/* VAR_CONFIG instance_specific_init_list END_VAR */
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//SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused)
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/* helper symbol for instance_specific_initializations */
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//SYM_LIST(instance_specific_init_list_c)
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/* resource_name '.' program_name '.' {fb_name '.'}
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((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization))
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*/
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//SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization)
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/* helper symbol for instance_specific_init */
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/* function_block_type_name ':=' structure_initialization */
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//SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization)
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}; /* generate_c_configbody_c */
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