lbessard@70: /*
lbessard@70:  * (c) 2003 Mario de Sousa
lbessard@70:  *
lbessard@70:  * Offered to the public under the terms of the GNU General Public License
lbessard@70:  * as published by the Free Software Foundation; either version 2 of the
lbessard@70:  * License, or (at your option) any later version.
lbessard@70:  *
lbessard@70:  * This program is distributed in the hope that it will be useful, but
lbessard@70:  * WITHOUT ANY WARRANTY; without even the implied warranty of
lbessard@70:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
lbessard@70:  * Public License for more details.
lbessard@70:  *
lbessard@70:  * This code is made available on the understanding that it will not be
lbessard@70:  * used in safety-critical situations without a full and competent review.
lbessard@70:  */
lbessard@70: 
lbessard@70: /*
lbessard@70:  * An IEC 61131-3 IL and ST compiler.
lbessard@70:  *
lbessard@70:  * Based on the
lbessard@70:  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
lbessard@70:  *
lbessard@70:  */
lbessard@70: 
lbessard@70: 
lbessard@70: /*
lbessard@70:  * Build the body of the main function (currently named run() )
lbessard@70:  * of the class onto which is mapped a specific CONFIGURATION.
lbessard@70:  *
lbessard@70:  * This is part of the 4th stage that generates
lbessard@70:  * a c++ source program equivalent to the IL and ST
lbessard@70:  * code.
lbessard@70:  */
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: // #include <stdio.h>  /* required for NULL */
lbessard@70: /*
lbessard@70: #include <string>
lbessard@70: #include <iostream>
lbessard@70: 
lbessard@70: #include "../../util/symtable.hh"
lbessard@70: 
lbessard@70: #include "../stage4.hh"
lbessard@70: */
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: class generate_c_configbody_c: public generate_c_base_c {
lbessard@70: 
lbessard@70:   public:
lbessard@70:     generate_c_configbody_c(stage4out_c *s4o_ptr)
lbessard@70:     : generate_c_base_c(s4o_ptr) {
lbessard@70:       current_resource_name = NULL;
lbessard@70:     }
lbessard@70: 
lbessard@70:     virtual ~generate_c_configbody_c(void) {}
lbessard@70: 
lbessard@70: 
lbessard@70:   private:
lbessard@70:     /* The name of the resource curretnly being processed... */
lbessard@70:     symbol_c *current_resource_name;
lbessard@70: 
lbessard@70: 
lbessard@70: /********************************/
lbessard@70: /* B 1.7 Configuration elements */
lbessard@70: /********************************/
lbessard@70: 
lbessard@70: 
lbessard@70: public:
lbessard@70: /*
lbessard@70: CONFIGURATION configuration_name
lbessard@70:    optional_global_var_declarations
lbessard@70:    (resource_declaration_list | single_resource_declaration)
lbessard@70:    optional_access_declarations
lbessard@70:    optional_instance_specific_initializations
lbessard@70: END_CONFIGURATION
lbessard@70: */
lbessard@70: /*
lbessard@70: SYM_REF6(configuration_declaration_c, configuration_name, global_var_declarations, resource_declarations, access_declarations, instance_specific_initializations, unused)
lbessard@70: */
lbessard@70: void *visit(configuration_declaration_c *symbol) {
lbessard@70:   TRACE("configuration_declaration_c");
lbessard@70: 
lbessard@70:   symbol->resource_declarations->accept(*this);
lbessard@70:   return NULL;
lbessard@70: }
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: /* helper symbol for configuration_declaration */
lbessard@70: // SYM_LIST(resource_declaration_list_c)
lbessard@70: void *visit(resource_declaration_list_c *symbol) {
lbessard@70:   TRACE("resource_declaration_list_c");
lbessard@70: 
lbessard@70:   return print_list(symbol);
lbessard@70: }
lbessard@70: 
lbessard@70: /*
lbessard@70: RESOURCE resource_name ON resource_type_name
lbessard@70:    optional_global_var_declarations
lbessard@70:    single_resource_declaration
lbessard@70: END_RESOURCE
lbessard@70: */
lbessard@70: // SYM_REF4(resource_declaration_c, resource_name, resource_type_name, global_var_declarations, resource_declaration)
lbessard@70: void *visit(resource_declaration_c *symbol) {
lbessard@70:   TRACE("resource_declaration_c");
lbessard@70: 
lbessard@70:   current_resource_name = symbol->resource_name;
lbessard@70:   symbol->resource_declaration->accept(*this);
lbessard@70:   current_resource_name = NULL;
lbessard@70:   return NULL;
lbessard@70: }
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: /* task_configuration_list program_configuration_list */
lbessard@70: // SYM_REF2(single_resource_declaration_c, task_configuration_list, program_configuration_list)
lbessard@70: void *visit(single_resource_declaration_c *symbol) {
lbessard@70:   TRACE("single_resource_declaration_c");
lbessard@70: 
lbessard@70:   symbol->program_configuration_list->accept(*this);
lbessard@70:   return NULL;
lbessard@70: }
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: /* helper symbol for single_resource_declaration */
lbessard@70: //SYM_LIST(task_configuration_list_c)
lbessard@70: 
lbessard@70: 
lbessard@70: /* helper symbol for single_resource_declaration */
lbessard@70: //SYM_LIST(program_configuration_list_c)
lbessard@70: void *visit(program_configuration_list_c *symbol) {
lbessard@70:   TRACE("program_configuration_list_c");
lbessard@70: 
lbessard@70:   return print_list(symbol);
lbessard@70: }
lbessard@70: 
lbessard@70: 
lbessard@70: /* helper symbol for
lbessard@70:  *  - access_path
lbessard@70:  *  - instance_specific_init
lbessard@70:  */
lbessard@70: //SYM_LIST(any_fb_name_list_c)
lbessard@70: 
lbessard@70: /*  [resource_name '.'] global_var_name ['.' structure_element_name] */
lbessard@70: //SYM_REF4(global_var_reference_c, resource_name, global_var_name, structure_element_name, unused)
lbessard@70: 
lbessard@70: /*  prev_declared_program_name '.' symbolic_variable */
lbessard@70: //SYM_REF2(program_output_reference_c, program_name, symbolic_variable)
lbessard@70: 
lbessard@70: /*  TASK task_name task_initialization */
lbessard@70: //SYM_REF2(task_configuration_c, task_name, task_initialization)
lbessard@70: 
lbessard@70: /*  '(' [SINGLE ASSIGN data_source ','] [INTERVAL ASSIGN data_source ','] PRIORITY ASSIGN integer ')' */
lbessard@70: //SYM_REF4(task_initialization_c, single_data_source, interval_data_source, priority_data_source, unused)
lbessard@70: 
lbessard@70: /*  PROGRAM [RETAIN | NON_RETAIN] program_name [WITH task_name] ':' program_type_name ['(' prog_conf_elements ')'] */
lbessard@70: //SYM_REF6(program_configuration_c, retain_option, program_name, task_name, program_type_name, prog_conf_elements, unused)
lbessard@70: void *visit(program_configuration_c *symbol) {
lbessard@70:   TRACE("program_configuration_c");
lbessard@70: 
lbessard@70:   s4o.print(s4o.indent_spaces);
lbessard@70:   if (NULL != current_resource_name) {
lbessard@70:     current_resource_name->accept(*this);
lbessard@70:     s4o.print(".");
lbessard@70:   }
lbessard@70:   symbol->program_name->accept(*this);
lbessard@70:   s4o.print(".f();\n");
lbessard@70:   return NULL;
lbessard@70: }
lbessard@70: 
lbessard@70: /* prog_conf_elements ',' prog_conf_element */
lbessard@70: //SYM_LIST(prog_conf_elements_c)
lbessard@70: 
lbessard@70: /*  fb_name WITH task_name */
lbessard@70: //SYM_REF2(fb_task_c, fb_name, task_name)
lbessard@70: // TODO...
lbessard@70: 
lbessard@70: /*  any_symbolic_variable ASSIGN prog_data_source */
lbessard@70: //SYM_REF2(prog_cnxn_assign_c, symbolic_variable, prog_data_source)
lbessard@70: 
lbessard@70: /* any_symbolic_variable SENDTO data_sink */
lbessard@70: //SYM_REF2(prog_cnxn_sendto_c, symbolic_variable, prog_data_source)
lbessard@70: 
lbessard@70: /* VAR_CONFIG instance_specific_init_list END_VAR */
lbessard@70: //SYM_REF2(instance_specific_initializations_c, instance_specific_init_list, unused)
lbessard@70: 
lbessard@70: /* helper symbol for instance_specific_initializations */
lbessard@70: //SYM_LIST(instance_specific_init_list_c)
lbessard@70: 
lbessard@70: /* resource_name '.' program_name '.' {fb_name '.'}
lbessard@70:     ((variable_name [location] ':' located_var_spec_init) | (fb_name ':' fb_initialization))
lbessard@70: */
lbessard@70: //SYM_REF6(instance_specific_init_c, resource_name, program_name, any_fb_name_list, variable_name, location, initialization)
lbessard@70: 
lbessard@70: /* helper symbol for instance_specific_init */
lbessard@70: /* function_block_type_name ':=' structure_initialization */
lbessard@70: //SYM_REF2(fb_initialization_c, function_block_type_name, structure_initialization)
lbessard@70: 
lbessard@70: 
lbessard@70: 
lbessard@70: }; /* generate_c_configbody_c */
lbessard@70: 
lbessard@70: