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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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