stage4/generate_c/generate_c.cc
author Edouard Tisserant
Fri, 30 Aug 2019 10:27:45 +0200
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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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#include <string>
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#include <iostream>
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#include <sstream>
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#include <typeinfo>
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#include <list>
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#include <map>
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#include <sstream>
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#include <strings.h>
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#include "../../util/symtable.hh"
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#include "../../util/dsymtable.hh"
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#include "../../absyntax/visitor.hh"
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#include "../../absyntax_utils/absyntax_utils.hh"
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#include "../../main.hh" // required for ERROR() and ERROR_MSG() macros.
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#include "../stage4.hh"
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//#define DEBUG
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#ifdef DEBUG
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#define TRACE(classname) printf("\n____%s____\n",classname);
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#else
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#define TRACE(classname)
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#endif
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#define STAGE4_ERROR(symbol1, symbol2, ...) {stage4err("while generating C code", symbol1, symbol2, __VA_ARGS__); exit(EXIT_FAILURE);}
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/* Macros to access the constant value of each expression (if it exists) from the annotation introduced to the symbol_c object by constant_folding_c in stage3! */
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#define VALID_CVALUE(dtype, symbol)           ((symbol)->const_value._##dtype.is_valid())
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#define GET_CVALUE(dtype, symbol)             ((symbol)->const_value._##dtype.get()) 
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/***********************************************************************/
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/* Unlike Programs and Configurations which get mapped onto C++ classes,
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 * Function Blocks are mapped onto a C structure containing the variables, and
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 * a C function containing the code in the FB's body. This is to allow direct allocation
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 * of a FB variable (which is really an instance of the C data structure) to
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 * a member of a union variable (note that classes with constructors cannot
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 * be mebers of a union), which is done in IL when loading a FB onto IL's
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 * default variable.
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 *
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 * So as not to clash the names of the C data structure and the C function,
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 * the C structure is given a name identical to that of the FB name, whereas
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 * the name of the function is the FB name with a constant string appended.
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 * The value of that constant string which is appended is defined in the following
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 * constant.
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 * In order not to clash with any variable in the IL and ST source codem the
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 * following constant should contain a double underscore, which is not allowed
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 * in IL and ST.
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 *
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 * e.g.:  FUNTION_BLOCK TEST
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 * is mapped onto a TEST data structure, and a TEST_body__ function.
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 */
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#define FB_FUNCTION_SUFFIX "_body__"
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/* Idem as body, but for initializer FB function */
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#define FB_INIT_SUFFIX "_init__"
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/* Idem as body, but for run CONFIG and RESOURCE function */
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#define FB_RUN_SUFFIX "_run__"
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/* The FB body function is passed as the only parameter a pointer to the FB data
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 * structure instance. The name of this parameter is given by the following constant.
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 * In order not to clash with any variable in the IL and ST source codem the
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 * following constant should contain a double underscore, which is not allowed
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 * in IL and ST.
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 *
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 * e.g.: the body of FUNTION_BLOCK TEST
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 * is mapped onto the C function
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 *  TEST_body__(TEST *data__)
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 */
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#define FB_FUNCTION_PARAM "data__"
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#define SFC_STEP_ACTION_PREFIX "__SFC_"
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/* Variable declaration symbol for accessor macros */
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#define DECLARE_VAR "__DECLARE_VAR"
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#define DECLARE_GLOBAL "__DECLARE_GLOBAL"
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#define DECLARE_GLOBAL_FB "__DECLARE_GLOBAL_FB"
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#define DECLARE_GLOBAL_LOCATION "__DECLARE_GLOBAL_LOCATION"
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#define DECLARE_GLOBAL_LOCATED "__DECLARE_GLOBAL_LOCATED"
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#define DECLARE_EXTERNAL "__DECLARE_EXTERNAL"
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#define DECLARE_EXTERNAL_FB "__DECLARE_EXTERNAL_FB"
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#define DECLARE_LOCATED "__DECLARE_LOCATED"
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#define DECLARE_GLOBAL_PROTOTYPE "__DECLARE_GLOBAL_PROTOTYPE"
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/* Variable declaration symbol for accessor macros */
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#define INIT_VAR "__INIT_VAR"
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#define INIT_GLOBAL "__INIT_GLOBAL"
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#define INIT_GLOBAL_FB "__INIT_GLOBAL_FB"
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#define INIT_GLOBAL_LOCATED "__INIT_GLOBAL_LOCATED"
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#define INIT_EXTERNAL "__INIT_EXTERNAL"
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#define INIT_EXTERNAL_FB "__INIT_EXTERNAL_FB"
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#define INIT_LOCATED "__INIT_LOCATED"
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#define INIT_LOCATED_VALUE "__INIT_LOCATED_VALUE"
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/* Variable getter symbol for accessor macros */
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#define GET_VAR "__GET_VAR"
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#define GET_EXTERNAL "__GET_EXTERNAL"
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#define GET_EXTERNAL_FB "__GET_EXTERNAL_FB"
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#define GET_LOCATED "__GET_LOCATED"
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#define GET_VAR_REF "__GET_VAR_REF"
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#define GET_EXTERNAL_REF "__GET_EXTERNAL_REF"
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#define GET_EXTERNAL_FB_REF "__GET_EXTERNAL_FB_REF"
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#define GET_LOCATED_REF "__GET_LOCATED_REF"
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#define GET_VAR_DREF "__GET_VAR_DREF"
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#define GET_EXTERNAL_DREF "__GET_EXTERNAL_DREF"
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#define GET_EXTERNAL_FB_DREF "__GET_EXTERNAL_FB_DREF"
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#define GET_LOCATED_DREF "__GET_LOCATED_DREF"
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#define GET_VAR_BY_REF "__GET_VAR_BY_REF"
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#define GET_EXTERNAL_BY_REF "__GET_EXTERNAL_BY_REF"
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#define GET_EXTERNAL_FB_BY_REF "__GET_EXTERNAL_FB_BY_REF"
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#define GET_LOCATED_BY_REF "__GET_LOCATED_BY_REF"
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/* Variable setter symbol for accessor macros */
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#define SET_VAR "__SET_VAR"
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#define SET_EXTERNAL "__SET_EXTERNAL"
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#define SET_EXTERNAL_FB "__SET_EXTERNAL_FB"
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#define SET_LOCATED "__SET_LOCATED"
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/* Variable initial value symbol for accessor macros */
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#define INITIAL_VALUE "__INITIAL_VALUE"
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/* Generate a name for a temporary variable.
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 * Each new name generated is appended a different number,
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 * starting off from 0.
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 * After calling reset(), the names will start off again from 0.
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 */
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#define VAR_LEADER "__"
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#define TEMP_VAR VAR_LEADER "TMP_"
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#define SOURCE_VAR VAR_LEADER "SRC_"
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/* please see the comment before the RET_operator_c visitor for details... */
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#define END_LABEL VAR_LEADER "end"
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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static int generate_line_directives__ = 0;
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static int generate_pou_filepairs__   = 0;
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static int generate_plc_state_backup_fuctions__ = 0;
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#ifdef __unix__
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/* Parse command line options passed from main.c !! */
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#include <stdlib.h> // for getsubopt()
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int  stage4_parse_options(char *options) {
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  enum {LINE_OPT = 0,  
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        SEPTFILE_OPT,
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        BACKUP_OPT    /* option to generate function to backup and restore internal PLC state */
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        /*, SOME_OTHER_OPT, YET_ANOTHER_OPT */};
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  char *const token[] = {
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        /*       LINE_OPT*/(char *)"l",
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        /*   SEPTFILE_OPT*/(char *)"p",
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        /*     BACKUP_OPT*/(char *)"b",
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        /* SOME_OTHER_OPT, ...             */
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        NULL };
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  /* unfortunately, the above commented out syntax for array initialization is valid in C, but not in C++ */
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  char *subopts = options;
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  char *value;
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  int opt;
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  while (*subopts != '\0') {
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    switch (getsubopt(&subopts, token, &value)) {
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      case     LINE_OPT: generate_line_directives__            = 1; break;
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      case SEPTFILE_OPT: generate_pou_filepairs__              = 1; break;
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      case   BACKUP_OPT: generate_plc_state_backup_fuctions__  = 1; break;
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      default          : fprintf(stderr, "Unrecognized option: -O %s\n", value); return -1; break;
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     }
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  }     
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  return 0;
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}
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void stage4_print_options(void) {
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  printf("          (options must be separated by commas. Example: 'l,w,x')\n"); 
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  printf("      l : insert '#line' directives in generated C code.\n"); 
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  printf("      p : place each POU in a separate pair of files (<pou_name>.c, <pou_name>.h).\n"); 
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  printf("      b : generate functions to backup and restore internal PLC state.\n"); 
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}
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#else /* not __unix__ */
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/* getsubopt isn't supported with mingw, 
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 *  then stage4 options aren't available on windows*/
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void stage4_print_options(void) {}
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int  stage4_parse_options(char *options) {return 0;}
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#endif 
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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#include "generate_c_base.cc"
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#include "generate_c_typedecl.cc"
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#include "generate_c_sfcdecl.cc"
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#include "generate_c_vardecl.cc"
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#include "generate_c_configbody.cc"
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#include "generate_location_list.cc"
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#include "generate_var_list.cc"
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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#include "generate_c.hh"
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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/***********************************************************************/
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/* A helper class that prints out the identifiers for function calls to overloaded functions */
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/* Given a function declaration of the function being called, it 
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 * will simply print out the returned data type,
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 * followed by the data types of all input, output, and in_out parameters.
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 *   for e.g.; 
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 *     SIN( REAL) : REAL      -> prints out ->  REAL__REAL
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 *     LEN( STRING) : INT     -> prints out ->  INT__STRING
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 *     MUL(TIME, INT) : TIME  -> prints out ->  TIME__TIME__INT
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 */
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class print_function_parameter_data_types_c: public generate_c_base_and_typeid_c {
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  private:
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    symbol_c *current_type;
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    bool_type_name_c tmp_bool;
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    void print_list(symbol_c *var_list, symbol_c *data_type) { 
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      if (data_type != NULL) {
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        /* print out the data type once for every variable! */
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        list_c *list = dynamic_cast<list_c *>(var_list);
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        if (list == NULL) ERROR;  
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        for (int i=0; i < list->n; i++) {
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          s4o.print("__");
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          data_type->accept(*this);
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        }  
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      }
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    }
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  public:
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    print_function_parameter_data_types_c(stage4out_c *s4o_ptr): 
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      generate_c_base_and_typeid_c(s4o_ptr)
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      {current_type = NULL;}
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   285
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    /**************************************/
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   287
    /* B.1.5 - Program organization units */
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    /**************************************/
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   289
    /***********************/
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   290
    /* B 1.5.1 - Functions */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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   291
    /***********************/
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    /*   FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
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    /* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
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    void *visit(function_declaration_c *symbol) {
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   295
      symbol->type_name->accept(*this); /* return type */
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   296
      symbol->var_declarations_list->accept(*this);
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      return NULL;
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diff changeset
   298
    }
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    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
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   301
    //void *visit(var_declarations_list_c *symbol) {// iterate through list}
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   302
    
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   303
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
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   304
    //void *visit(input_declarations_c *symbol) {// iterate through list}
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   305
        
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   306
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
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   307
    //void *visit(input_declaration_list_c *symbol) {// iterate through list}
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   308
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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   309
    void *visit(edge_declaration_c *symbol) {
1064
1ac77681946f Abort compilation when finding R_EDGE or F_EDGE
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      {STAGE4_ERROR(symbol, symbol, "R_EDGE and F_EDGE declarations are not currently supported"); ERROR;}
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   311
      /* 
350
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   312
      current_type = &tmp_bool; 
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   313
      symbol->var1_list->accept(*this);
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   314
      current_type = NULL; 
1064
1ac77681946f Abort compilation when finding R_EDGE or F_EDGE
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diff changeset
   315
      */
350
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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   316
      return NULL;
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   317
    }
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   318
    
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   319
    /* We do NOT print out EN and ENO parameters! */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   320
    void *visit(en_param_declaration_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   321
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   322
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   323
    //void *visit(output_declarations_c *symbol) {// iterate through list}    
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   324
    
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   325
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   326
    //void *visit(var_init_decl_list_c *symbol) {// iterate through list}
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diff changeset
   327
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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diff changeset
   328
    void *visit(simple_spec_init_c *symbol) {
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   329
      /* return the data type */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   330
      return symbol->simple_specification; 
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   331
    }
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   332
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   333
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   334
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   335
    /* NOTE: although this class may also sometimes point to a previously_declared_subrange_type_name
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   336
     * we don't need this for now, so it is easier to just skip it allocation
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   337
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   338
    void *visit(subrange_spec_init_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   339
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   340
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   341
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   342
    /* NOTE: although this class may also sometimes point to a previously_declared_enumerated_type_name
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   343
     * we don't need this for now, so it is easier to just skip it allocation
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   344
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   345
    void *visit(enumerated_spec_init_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   346
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   347
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   348
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   349
    /* NOTE: although this class may also sometimes point to a previously_declared_array_type_name
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   350
     * we don't need this for now, so it is easier to just skip it allocation
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   351
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   352
    void *visit(array_var_init_decl_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   353
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   354
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   355
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   356
    /* NOTE: although this class may also sometimes point to a previously_declared_structured_type_name
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   357
     * we don't need this for now, so it is easier to just skip it allocation
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   358
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   359
    void *visit(structured_var_init_decl_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   360
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   361
    /* We do NOT print out EN and ENO parameters! */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   362
    void *visit(eno_param_declaration_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   363
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   364
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   365
    //void *visit(input_output_declarations_c *symbol) {// iterate through list}    
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   366
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   367
    /* already handled by iterator base class (note that generate_c_base_c inherits from iterator_c) */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   368
    //void *visit(var_declaration_list_c *symbol) {iterate through list}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
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parents: 330
diff changeset
   369
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   370
    void *visit(fb_name_decl_c *symbol) {
810
d9c48ad646f1 Add a new node to the abstract symtax tree, which will let us do datatype checking of FB variable declarations using the standard algorithm, and no special cases.
Mario de Sousa <msousa@fe.up.pt>
parents: 793
diff changeset
   371
      print_list(symbol->fb_name_list, spec_init_sperator_c::get_spec(symbol->fb_spec_init)); 
350
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   372
      return NULL;
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   373
    }
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   374
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   375
    void *visit(var1_init_decl_c *symbol) {
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   376
      print_list(symbol->var1_list, (symbol_c *)symbol->spec_init->accept(*this));
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   377
      return NULL;
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   378
    }
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   379
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   380
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   381
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   382
    void *visit(array_var_declaration_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   383
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   384
    void *visit(structured_var_declaration_c *symbol) {
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   385
      current_type = symbol->structure_type_name; 
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   386
      symbol->var1_list->accept(*this);
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   387
      current_type = NULL; 
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   388
      return NULL;
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   389
    }
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   390
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   391
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   392
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   393
    /* Note that this class is used for fixed length strings...
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   394
     *   STRING [ 42 ]
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   395
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   396
    void *visit(single_byte_string_var_declaration_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   397
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   398
    /* currently we do not support data types defined in the declaration itself */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   399
    /* For now, sugest the user define a TYPE .. END_TYPE */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   400
    /* Note that this class is used for fixed length strings...
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   401
     *   WSTRING [ 42 ]
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   402
     */
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   403
    void *visit(double_byte_string_var_declaration_c *symbol) {return NULL;}
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   404
};
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   405
    
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   406
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   407
/***********************************************************************/
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   408
/***********************************************************************/
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   409
/***********************************************************************/
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   410
/***********************************************************************/
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   411
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   412
/* A helper class that analyses if the datatype of a variable is 'complex'. */
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   413
/* 'complex' means that it is either a strcuture or an array!               */
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   414
class analyse_variable_c: public search_visitor_c {
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   415
  private:
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   416
    static analyse_variable_c *singleton_;
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   417
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   418
  public:
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   419
    analyse_variable_c(void) {};
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   420
    
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   421
    static bool is_complex_type(symbol_c *symbol) {
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   422
      if (NULL == symbol) ERROR;
872
3d682f87c870 Remove assertion being failed by IL labels (IL labels do not yet have specific datatypes).
mjsousa
parents: 864
diff changeset
   423
      if (!get_datatype_info_c::is_type_valid     (symbol->datatype)) return false;
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   424
      return (   get_datatype_info_c::is_structure(symbol->datatype) 
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   425
              || get_datatype_info_c::is_array    (symbol->datatype) 
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   426
             );
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   427
    }
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   428
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   429
    
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   430
  private:
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   431
    symbol_c *last_fb, *first_non_fb_identifier;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   432
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   433
  public:  
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   434
    /* returns the first element (from left to right) in a structured variable that is not a FB, i.e. is either a structure or an array! */
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   435
    /* eg:
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   436
     *      fb1.fb2.fb3.real       returns ??????
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   437
     *      fb1.fb2.struct1.real   returns struct1
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   438
     *      struct1.real           returns struct1
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   439
     */
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   440
    static symbol_c *find_first_nonfb(symbol_c *symbol) {
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   441
      if (NULL == singleton_)       singleton_ = new analyse_variable_c();
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   442
      if (NULL == singleton_)       ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   443
      if (NULL == symbol)           ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   444
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   445
      singleton_->last_fb                 = NULL;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   446
      singleton_->first_non_fb_identifier = NULL;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   447
      return (symbol_c *)symbol->accept(*singleton_);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   448
    }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   449
    
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   450
    /* returns true if a strcutured variable (e.g. fb1.fb2.strcut1.real) contains a structure or array */
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   451
    /* eg:
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   452
     *      fb1.fb2.fb3.real       returns FALSE
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   453
     *      fb1.fb2.struct1.real   returns TRUE
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   454
     *      struct1.real           returns TRUE
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   455
     */
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   456
    static bool contains_complex_type(symbol_c *symbol) {
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   457
      if (NULL == symbol) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   458
      if (!get_datatype_info_c::is_type_valid(symbol->datatype)) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   459
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   460
      symbol_c *first_non_fb = (symbol_c *)find_first_nonfb(symbol);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   461
      return is_complex_type(first_non_fb->datatype);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   462
    }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   463
    
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   464
    
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   465
    /* returns the datatype of the variable returned by find_first_nonfb() */
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   466
    /* eg:
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   467
     *      fb1.fb2.fb3.real       returns ??????
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   468
     *      fb1.fb2.struct1.real   returns datatype of struct1
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   469
     *      struct1.real           returns datatype of struct1
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   470
     */
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   471
    static search_var_instance_decl_c::vt_t first_nonfb_vardecltype(symbol_c *symbol, symbol_c *scope) {
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   472
      if (NULL == symbol) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   473
      if (!get_datatype_info_c::is_type_valid(symbol->datatype)) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   474
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   475
      symbol_c *first_non_fb = (symbol_c *)find_first_nonfb(symbol);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   476
      if (NULL != singleton_->last_fb) {
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   477
        scope = singleton_->last_fb->datatype;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   478
        symbol = singleton_->first_non_fb_identifier;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   479
      }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   480
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   481
      search_var_instance_decl_c search_var_instance_decl(scope);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   482
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   483
      return search_var_instance_decl.get_vartype(symbol);
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   484
    }
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   485
    
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   486
    
853
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   487
    /*********************/
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   488
    /* B 1.4 - Variables */
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   489
    /*********************/
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   490
    void *visit(symbolic_variable_c *symbol) {
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   491
      if (!get_datatype_info_c::is_type_valid    (symbol->datatype)) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   492
      if (!get_datatype_info_c::is_function_block(symbol->datatype)) {
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   493
         first_non_fb_identifier = symbol; 
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   494
         return (void *)symbol;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   495
      }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   496
      last_fb = symbol;
853
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   497
      return NULL;
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   498
    }
818c4ac5d64d Fix bug-fix of previous commit.
Mario de Sousa <msousa@fe.up.pt>
parents: 852
diff changeset
   499
    
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   500
    /*************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   501
    /* B.1.4.2   Multi-element Variables */
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   502
    /*************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   503
    
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   504
    // SYM_REF2(structured_variable_c, record_variable, field_selector)
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   505
    void *visit(structured_variable_c *symbol) {
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   506
      symbol_c *res = (symbol_c *)symbol->record_variable->accept(*this);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   507
      if (NULL != res) return res;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   508
      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   509
      if (!get_datatype_info_c::is_type_valid    (symbol->datatype)) ERROR;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   510
      if (!get_datatype_info_c::is_function_block(symbol->datatype)) {
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   511
         first_non_fb_identifier = symbol->field_selector; 
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   512
         return (void *)symbol;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   513
      }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   514
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   515
      last_fb = symbol;      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   516
      return NULL;      
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   517
    }
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   518
    
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   519
    /*  subscripted_variable '[' subscript_list ']' */
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   520
    //SYM_REF2(array_variable_c, subscripted_variable, subscript_list)
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   521
    void *visit(array_variable_c *symbol) {
863
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   522
      void *res = symbol->subscripted_variable->accept(*this);
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   523
      if (NULL != res) return res;
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   524
      return (void *)symbol;      
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   525
    }
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   526
06820d03a433 Fix bug: correctly generate code when accessing external variables declared inside FBs as a structured variable (realvar := fb1.fb2.extvar1.realvar)
Mario de Sousa <msousa@fe.up.pt>
parents: 854
diff changeset
   527
    
852
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   528
};
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   529
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   530
analyse_variable_c *analyse_variable_c::singleton_ = NULL;
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   531
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   532
/***********************************************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   533
/***********************************************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   534
/***********************************************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   535
/***********************************************************************/
efb44e892582 Fix bug: allow use, as lvalues, structures/arrays inside FBs (e.g. fb1.struct1.r := 33.3).
Mario de Sousa <msousa@fe.up.pt>
parents: 816
diff changeset
   536
350
2c3c4dc34979 Support for semantic verification of calls to standard functions.
Mario de Sousa <msousa@fe.up.pt>
parents: 330
diff changeset
   537
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   538
#include "generate_c_st.cc"
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   539
#include "generate_c_il.cc"
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   540
#include "generate_c_inlinefcall.cc"
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   541
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   542
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   543
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   544
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   545
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   546
1082
903e2782e405 fix bug introduced in previous commit (force literals to unsigned log long)
Mario de Sousa <msousa@fe.up.pt>
parents: 1081
diff changeset
   547
#define MILLISECOND ((unsigned long long)1000000)
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   548
#define SECOND 1000 * MILLISECOND
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   549
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   550
#define ULL_MAX std::numeric_limits<unsigned long long>::max()
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   551
#define UL_MAX std::numeric_limits<uint32_t>::max()
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   552
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   553
/* unsigned long long -> multiply and add : time_var += interval * multiplier  */
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   554
/*  note: multiplier must be <> 0 due to overflow test                         */
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   555
#define ULL_MUL_ADD(time_var, interval, multiplier, overflow_flag) {                       \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   556
    /* Test overflow on MUL by pre-condition: If (ULL_MAX / a) < b => overflow! */         \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   557
    overflow_flag |= ((ULL_MAX / (multiplier)) < GET_CVALUE(uint64, interval));            \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   558
    /* Test overflow on ADD by pre-condition: If (ULL_MAX - a) < b => overflow! */         \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   559
    overflow_flag |= ((ULL_MAX - (GET_CVALUE(uint64, interval) * multiplier)) < time_var); \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   560
    time_var += GET_CVALUE(uint64, interval) * (multiplier);                               \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   561
}
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   562
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   563
/* long double -> multiply and add : time_var += interval * multiplier  */
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   564
#define LDB_MUL_ADD(time_var, interval, multiplier) {  \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   565
    time_var += GET_CVALUE(real64, interval) * (multiplier);               \
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   566
}
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   567
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   568
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   569
unsigned long long calculate_time(symbol_c *symbol) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   570
  if (NULL == symbol) return 0;
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   571
  
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   572
  interval_c *interval = dynamic_cast<interval_c *>(symbol);
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   573
  duration_c *duration = dynamic_cast<duration_c *>(symbol);
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   574
  
632
76c3d707ffa1 Adding error message when task interval value is not supported
Laurent Bessard
parents: 631
diff changeset
   575
  if ((NULL == interval) && (NULL == duration))
631
1a4f5ce62962 Adding error message when task interval value is not supported
Laurent Bessard
parents: 625
diff changeset
   576
  	  {STAGE4_ERROR(symbol, symbol, "This type of interval value is not currently supported"); ERROR;}
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   577
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   578
  if (NULL != duration) {
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   579
    /* SYM_REF2(duration_c, neg, interval) */
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   580
    if (duration->neg != NULL)
631
1a4f5ce62962 Adding error message when task interval value is not supported
Laurent Bessard
parents: 625
diff changeset
   581
      {STAGE4_ERROR(duration, duration, "Negative TIME literals for interval are not currently supported"); ERROR;}
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   582
    return calculate_time(duration->interval);
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   583
  }
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   584
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   585
  if (NULL != interval) {
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 522
diff changeset
   586
    /* SYM_REF5(interval_c, days, hours, minutes, seconds, milliseconds) */
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   587
      unsigned long long int time_ull = 0; 
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   588
      long double            time_ld  = 0;
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   589
      bool                   ovflow   = false;
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   590
      
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   591
      if (NULL != interval->milliseconds) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   592
        if      (VALID_CVALUE( int64, interval->milliseconds) &&           GET_CVALUE( int64, interval->milliseconds) < 0) ERROR; // interval elements should always be positive!
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   593
        if      (VALID_CVALUE(uint64, interval->milliseconds)) ULL_MUL_ADD(time_ull, interval->milliseconds,  MILLISECOND, ovflow)
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   594
        else if (VALID_CVALUE(real64, interval->milliseconds)) LDB_MUL_ADD(time_ld , interval->milliseconds,  MILLISECOND)
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   595
        else ERROR; // if (NULL != interval->milliseconds) is true, then it must have a valid constant value!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   596
      }
547
dab341e80664 Fix parsing os TIME literals & rename the extract_integer() function.
mjsousa <msousa@fe.up.pt>
parents: 522
diff changeset
   597
   
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   598
      if (NULL != interval->seconds     ) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   599
        if      (VALID_CVALUE( int64, interval->seconds     ) &&           GET_CVALUE( int64, interval->seconds     ) < 0) ERROR; // interval elements should always be positive!
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   600
        if      (VALID_CVALUE(uint64, interval->seconds     )) ULL_MUL_ADD(time_ull, interval->seconds,       SECOND, ovflow)
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   601
        else if (VALID_CVALUE(real64, interval->seconds     )) LDB_MUL_ADD(time_ld , interval->seconds,       SECOND)
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   602
        else ERROR; // if (NULL != interval->seconds) is true, then it must have a valid constant value!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   603
      }
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   604
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   605
      if (NULL != interval->minutes     ) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   606
        if      (VALID_CVALUE( int64, interval->minutes     ) &&           GET_CVALUE( int64, interval->minutes     ) < 0) ERROR; // interval elements should always be positive!
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   607
        if      (VALID_CVALUE(uint64, interval->minutes     )) ULL_MUL_ADD(time_ull, interval->minutes,       SECOND * 60, ovflow)
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   608
        else if (VALID_CVALUE(real64, interval->minutes     )) LDB_MUL_ADD(time_ld , interval->minutes,       SECOND * 60)
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   609
        else ERROR; // if (NULL != interval->minutes) is true, then it must have a valid constant value!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   610
      }
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   611
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   612
      if (NULL != interval->hours       ) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   613
        if      (VALID_CVALUE( int64, interval->hours       ) &&           GET_CVALUE( int64, interval->hours       ) < 0) ERROR; // interval elements should always be positive!
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   614
        if      (VALID_CVALUE(uint64, interval->hours       )) ULL_MUL_ADD(time_ull, interval->hours,         SECOND * 60 * 60, ovflow)
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   615
        else if (VALID_CVALUE(real64, interval->hours       )) LDB_MUL_ADD(time_ld , interval->hours,         SECOND * 60 * 60)
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   616
        else ERROR; // if (NULL != interval->hours) is true, then it must have a valid constant value!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   617
      }
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   618
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   619
      if (NULL != interval->days        ) {
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   620
        if      (VALID_CVALUE( int64, interval->days        ) &&           GET_CVALUE( int64, interval->days        ) < 0) ERROR; // interval elements should always be positive!
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   621
        if      (VALID_CVALUE(uint64, interval->days        )) ULL_MUL_ADD(time_ull, interval->days,          SECOND * 60 * 60 * 24, ovflow)
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   622
        else if (VALID_CVALUE(real64, interval->days        )) LDB_MUL_ADD(time_ld , interval->days,          SECOND * 60 * 60 * 24)
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   623
        else ERROR; // if (NULL != interval->days) is true, then it must have a valid constant value!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   624
      }
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   625
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   626
      /* Test overflow on ADD by pre-condition: If (ULL_MAX - a) < b => overflow! */
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   627
      ovflow |= ((ULL_MAX - time_ull) < (unsigned long long)time_ld);
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   628
      time_ull += time_ld;
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   629
      
1081
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   630
      if (ovflow) {
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   631
        /* time is being stored in ns resolution (MILLISECOND #define is set to 1000000)    */
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   632
        /* time is being stored in unsigned long long (ISO C99 guarantees at least 64 bits) */
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   633
        /* 2⁶64ns works out to around 584.5 years, assuming 365.25 days per year            */
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   634
        STAGE4_ERROR(symbol, symbol, "Internal overflow calculating task interval (must be < 584 years).");
d8ed548e2f9b return storage of task interval back to 1 ns resolution (when calculating least common multiple et. al. of task intervals).
Mario de Sousa <msousa@fe.up.pt>
parents: 1078
diff changeset
   635
      }
1078
81e2a100db14 Test for overflow when translating task periods/intervals to integer variable.
Mario de Sousa <msousa@fe.up.pt>
parents: 1077
diff changeset
   636
594
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   637
      return time_ull;
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   638
  };
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   639
  ERROR; // should never reach this point!
c8092e909886 Clean up code (remove parsing of integers in stage 4).
Mario de Sousa <msousa@fe.up.pt>
parents: 592
diff changeset
   640
  return 0; // humour the compiler!
661
f537c3315f83 Minor changes needed to build with pedantic flag.
Manuele Conti <conti.ma@alice.it>
parents: 624
diff changeset
   641
}
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   642
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   643
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   644
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   645
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   646
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   647
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   648
class calculate_common_ticktime_c: public iterator_visitor_c {
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   649
  private:
210
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   650
    unsigned long long common_ticktime;
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   651
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   652
    /* Tick overflow can't happen at 2^32 because it
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   653
     * must align with task periods.
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   654
     *
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   655
     * Instead of overflowing naturaly at 2^32
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   656
     * the overall periodicity of tasks scheduling
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   657
     * is used to find the closest overflow lesser than 2^32
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   658
     *
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   659
     */
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   660
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   661
    /* after common_period ticks, all task period align again */
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   662
    unsigned long common_period;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   663
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   664
  public:
210
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   665
    calculate_common_ticktime_c(void){
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   666
      common_ticktime = 0;
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   667
      common_period = 1; /* first tick time equals single/first task period */
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   668
    }
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   669
    
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   670
    unsigned long long GCM(unsigned long long a, unsigned long long b) {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   671
      if(a >= b){
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   672
        unsigned long long c = a % b;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   673
        if (c == 0)
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   674
          return b;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   675
        else
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   676
          return GCM(b, c);
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   677
      } else {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   678
        return GCM(b, a);
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   679
      }
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   680
    }
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   681
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   682
    bool update_ticktime(unsigned long long time) {
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   683
      if (common_ticktime == 0)
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   684
        common_ticktime = time;
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   685
      else 
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   686
        common_ticktime = GCM(time, common_ticktime);
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   687
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   688
      unsigned long task_period = (time / common_ticktime); /* in tick count */ 
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   689
      
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   690
      /* New Common Period is 
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   691
       * Least Common Multiple of 
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   692
       * Previous Common Period and
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   693
       * New task period
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   694
       *
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   695
       * LCM(a,b) = a*b/GCD(a,b)
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   696
       */
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   697
      unsigned long long new_common_period =
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   698
        common_period * task_period / GCM(common_period, task_period);
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   699
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   700
      if(new_common_period >= UL_MAX){
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   701
        return false;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   702
      } else {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   703
        common_period = new_common_period;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   704
      }
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   705
      /* else if task period already divides common period,
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   706
       * keep the same common period */
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   707
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   708
      return true;
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   709
    }
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   710
    
210
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   711
    unsigned long long get_common_ticktime(void) {
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   712
      return common_ticktime;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   713
    }
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   714
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   715
    uint32_t get_greatest_tick_count(void) {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   716
      if (common_period == 1) {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   717
          return 0;
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   718
      } else {
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   719
          return UL_MAX - (UL_MAX % common_period);
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   720
      }
210
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   721
    }
8387cac2aba6 Adding support for forcing tick count to return to zero as the same time than all tasks firing are synchronized
laurent
parents: 202
diff changeset
   722
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   723
/*  TASK task_name task_initialization */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   724
//SYM_REF2(task_configuration_c, task_name, task_initialization)  
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   725
    void *visit(task_initialization_c *symbol) {
816
dcd861dda04a Fixed bug when defining task with single_data_source instead of interval_data_source
Laurent Bessard
parents: 810
diff changeset
   726
      if (symbol->interval_data_source != NULL) {
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   727
        unsigned long long time = calculate_time(symbol->interval_data_source);
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   728
        if(!update_ticktime(time)) {
1080
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   729
          /* time is being stored in ns resolution (MILLISECOND #define is set to 1000000)    */
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   730
          /* time is being stored in unsigned long long (ISO C99 guarantees at least 64 bits) */
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   731
          /* 2⁶64ns works out to around 584.5 years, assuming 365.25 days per year            */
54445dfc28ec addendum to issue #76: detect overflow when calculating least common multiple of task intervals.
Mario de Sousa <msousa@fe.up.pt>
parents: 1079
diff changeset
   732
          STAGE4_ERROR(symbol, symbol, "Internal overflow calculating least common multiple of task intervals (must be < 584 years).");
1089
25271e1a3426 Reworked get_greatest_tick_count computation
Edouard Tisserant
parents: 1084
diff changeset
   733
        }
816
dcd861dda04a Fixed bug when defining task with single_data_source instead of interval_data_source
Laurent Bessard
parents: 810
diff changeset
   734
      }
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   735
      return NULL;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   736
    }
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   737
};    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   738
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   739
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   740
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   741
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   742
/***********************************************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   743
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   744
/* A helper class that knows how to generate code for the SFC, IL and ST languages... */
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   745
class generate_c_SFC_IL_ST_c: public null_visitor_c {
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   746
  private:
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   747
    stage4out_c *s4o_ptr;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   748
    symbol_c *scope;
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   749
    symbol_c *fbname;
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   750
    const char *variable_prefix;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   751
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   752
  public:
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   753
    generate_c_SFC_IL_ST_c(stage4out_c *s4o_ptr, symbol_c *name, symbol_c *scope, const char *variable_prefix = NULL);
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   754
    
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   755
    /********************/
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   756
    /* 2.1.6 - Pragmas  */
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   757
    /********************/
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   758
    void *visit(enable_code_generation_pragma_c * symbol)   {s4o_ptr->enable_output();  return NULL;}
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   759
    void *visit(disable_code_generation_pragma_c * symbol)  {s4o_ptr->disable_output(); return NULL;} 
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   760
    
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   761
    /*********************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   762
    /* B.1.6  Sequential function chart elements */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   763
    /*********************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   764
    /*| sequential_function_chart sfc_network*/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   765
    void *visit(sequential_function_chart_c * symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   766
    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   767
    /****************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   768
    /* B.2 - Language IL (Instruction List) */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   769
    /****************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   770
    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   771
    /***********************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   772
    /* B 2.1 Instructions and Operands */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   773
    /***********************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   774
    /*| instruction_list il_instruction */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   775
    void *visit(instruction_list_c *symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   776
    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   777
    /* Remainder implemented in generate_c_il_c... */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   778
    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   779
    /***************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   780
    /* B.3 - Language ST (Structured Text) */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   781
    /***************************************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   782
    /***********************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   783
    /* B 3.1 - Expressions */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   784
    /***********************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   785
    /* Implemented in generate_c_st_c */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   786
    
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   787
    /********************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   788
    /* B 3.2 Statements */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   789
    /********************/
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   790
    void *visit(statement_list_c *symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   791
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   792
/* Remainder implemented in generate_c_st_c... */
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   793
};
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   794
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   795
#include "generate_c_sfc.cc"
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   796
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   797
generate_c_SFC_IL_ST_c::generate_c_SFC_IL_ST_c(stage4out_c *s4o_ptr, symbol_c *name, symbol_c *scope, const char *variable_prefix) {
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   798
  if (NULL == scope) ERROR;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   799
  this->s4o_ptr = s4o_ptr;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   800
  this->scope = scope;
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   801
  this->fbname = name;
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   802
  this->variable_prefix = variable_prefix;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   803
}
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   804
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   805
void *generate_c_SFC_IL_ST_c::visit(sequential_function_chart_c * symbol) {
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   806
  generate_c_sfc_c generate_c_sfc(s4o_ptr, fbname, scope, variable_prefix);
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   807
  generate_c_sfc.generate(symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   808
  return NULL;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   809
}
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   810
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   811
void *generate_c_SFC_IL_ST_c::visit(instruction_list_c *symbol) {
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   812
  generate_c_il_c generate_c_il(s4o_ptr, fbname, scope, variable_prefix);
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   813
  generate_c_il.generate(symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   814
  return NULL;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   815
}
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   816
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   817
void *generate_c_SFC_IL_ST_c::visit(statement_list_c *symbol) {
217
f5dfadf5de54 Adding support for declare, init, get and set macros
laurent
parents: 210
diff changeset
   818
  generate_c_st_c generate_c_st(s4o_ptr, fbname, scope, variable_prefix);
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   819
  generate_c_st.generate(symbol);
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   820
  return NULL;
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   821
}
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   822
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   823
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   824
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   825
913
1c74da17cb61 Implicitly defined array datatypes use new naming method (greatly simplifies stage 4 code).
mjsousa
parents: 908
diff changeset
   826
1c74da17cb61 Implicitly defined array datatypes use new naming method (greatly simplifies stage 4 code).
mjsousa
parents: 908
diff changeset
   827
1c74da17cb61 Implicitly defined array datatypes use new naming method (greatly simplifies stage 4 code).
mjsousa
parents: 908
diff changeset
   828
1c74da17cb61 Implicitly defined array datatypes use new naming method (greatly simplifies stage 4 code).
mjsousa
parents: 908
diff changeset
   829
1c74da17cb61 Implicitly defined array datatypes use new naming method (greatly simplifies stage 4 code).
mjsousa
parents: 908
diff changeset
   830
377
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   831
/***********************************************************************/
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   832
/***********************************************************************/
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   833
/***********************************************************************/
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   834
/***********************************************************************/
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   835
/***********************************************************************/
60b012b7793f Adding support for compiling direct array specification inside variable declaration
laurent
parents: 355
diff changeset
   836
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   837
class generate_c_pous_c {  
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   838
  /* NOTE: This is NOT a visistor class!!
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   839
   * 
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   840
   *       Actually, it does not even really need to be a class. It is simply a collection of similar functions!!
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   841
   */ 
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   842
267
0a1204bcc9af starting to add proper header file with declaration of standard functions
Mario de Sousa <msousa@fe.up.pt>
parents: 262
diff changeset
   843
  private:
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   844
    static void print_end_of_block_label(stage4out_c &s4o) {
283
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   845
      /* Print and __end label for return statements!
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   846
       * If label is not used by at least one goto, compiler will generate a warning.
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   847
       * To work around this we introduce the useless goto.
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   848
       */
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   849
      s4o.print("\n");
634
736b36a83548 Added double curly braces for pragma (kept single curly braces for compatibility). Added macro def and undef surrounding pragma to simplify user code. Moved useless comment from generated code back to code generator.
Edouard Tisserant
parents: 632
diff changeset
   850
      /* to humour the compiler, we insert a goto */
283
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   851
      s4o.print(s4o.indent_spaces);
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   852
      s4o.print("goto ");
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   853
      s4o.print(END_LABEL);
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   854
      s4o.print(";\n");
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   855
      s4o.indent_left();
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   856
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   857
      /* write the label marking the end of the code block */
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   858
      /* please see the comment before the RET_operator_c visitor for details... */
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   859
      /* also needed for return_statement_c */
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   860
      s4o.print("\n");
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   861
      s4o.print(s4o.indent_spaces);
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   862
      s4o.print(END_LABEL);
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   863
      s4o.print(":\n");
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   864
      s4o.indent_right();
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   865
    }
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   866
  
214d3fdee596 fixing C code generation of return_statement_c and exit_statement_c
Mario de Sousa <msousa@fe.up.pt>
parents: 279
diff changeset
   867
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   868
    /*************/
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   869
    /* Functions */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   870
    /*************/
70
e1f0ebd2d9ec Change generate_cc to generate_c
lbessard
parents:
diff changeset
   871
  public:
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   872
    /* NOTE: The following function will be called twice:
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   873
     *         1st time:  s4o will reference the .h file, and print_declaration=true
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   874
     *                     Here, we generate the function prototypes...
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   875
     *         2nd time:  s4o will reference the .c file, and print_declaration=false
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   876
     *                     Here we generate the source code!
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   877
     */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   878
    /*   FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   879
    /* | FUNCTION derived_function_name ':' derived_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   880
    static void handle_function(function_declaration_c *symbol, stage4out_c &s4o, bool print_declaration) {
945
477393b00f95 Add support for relaxed datatype model for array datatypes.
mjsousa
parents: 933
diff changeset
   881
      generate_c_vardecl_c          *vardecl = NULL;
477393b00f95 Add support for relaxed datatype model for array datatypes.
mjsousa
parents: 933
diff changeset
   882
      generate_c_base_and_typeid_c   print_base(&s4o);
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   883
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   884
      TRACE("function_declaration_c");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   885
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   886
      /* (A) Function declaration... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   887
      /* (A.1) Function return type */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   888
      s4o.print("// FUNCTION\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   889
      symbol->type_name->accept(print_base); /* return type */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   890
      s4o.print(" ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   891
      /* (A.2) Function name */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   892
      symbol->derived_function_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   893
      s4o.print("(");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   894
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   895
      /* (A.3) Function parameters */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   896
      s4o.indent_right();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   897
      vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   898
                                         generate_c_vardecl_c::finterface_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   899
                                         generate_c_vardecl_c::input_vt    |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   900
                                         generate_c_vardecl_c::output_vt   |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   901
                                         generate_c_vardecl_c::inoutput_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   902
                                         generate_c_vardecl_c::en_vt       |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   903
                                         generate_c_vardecl_c::eno_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   904
      vardecl->print(symbol->var_declarations_list);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   905
      delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   906
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   907
      s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   908
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   909
      s4o.print(")");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   910
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   911
      /* If we only want the declaration/prototype, then return!! */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   912
      if (print_declaration) 
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   913
        {s4o.print(";\n"); return;}
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   914
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   915
      /* continue generating the function definition/code... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   916
      s4o.print("\n" + s4o.indent_spaces + "{\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   917
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   918
      /* (B) Function local variable declaration */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   919
      /* (B.1) Variables declared in ST source code */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   920
      s4o.indent_right();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   921
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   922
      vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   923
                    generate_c_vardecl_c::localinit_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   924
                    generate_c_vardecl_c::output_vt   |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   925
                    generate_c_vardecl_c::inoutput_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   926
                    generate_c_vardecl_c::private_vt  |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   927
                    generate_c_vardecl_c::eno_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   928
      vardecl->print(symbol->var_declarations_list);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   929
      delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   930
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   931
      /* (B.2) Temporary variable for function's return value */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   932
      /* It will have the same name as the function itself! */
1016
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   933
      /* NOTE: matiec supports a non-standard syntax, in which functions do not return a value
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   934
       *       (declared as returning the special non-standard datatype VOID)
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   935
       *       e.g.:   FUNCTION foo: VOID
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   936
       *                ...
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   937
       *               END_FUNCTION
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   938
       *       
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   939
       *       These functions cannot return any value, so they do not need a variable to
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   940
       *       store the return value.
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   941
       *       Note that any attemot to sto a value in the implicit variable
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   942
       *       e.g.:   FUNCTION foo: VOID
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   943
       *                ...
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   944
       *                 foo := 42;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   945
       *               END_FUNCTION
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   946
       *       will always return a datatype incompatilibiyt error in stage 3 of matiec, 
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   947
       *       so it is safe for stage 4 to assume that this return variable will never be needed
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   948
       *       if the function's return type is VOID.
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   949
       */
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   950
      if (!get_datatype_info_c::is_VOID(symbol->type_name->datatype)) { // only print return variable if return datatype is not VOID
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   951
        s4o.print(s4o.indent_spaces);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   952
        symbol->type_name->accept(print_base); /* return type */
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   953
        s4o.print(" ");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   954
        symbol->derived_function_name->accept(print_base);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   955
        s4o.print(" = ");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   956
        {
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   957
          /* get the default value of this variable's type */
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   958
          symbol_c *default_value = type_initial_value_c::get(symbol->type_name);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   959
          if (default_value == NULL) ERROR;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   960
          initialization_analyzer_c initialization_analyzer(default_value);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   961
          switch (initialization_analyzer.get_initialization_type()) {
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   962
            case initialization_analyzer_c::struct_it:
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   963
              {
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   964
                generate_c_structure_initialization_c *structure_initialization = new generate_c_structure_initialization_c(&s4o);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   965
                structure_initialization->init_structure_default(symbol->type_name);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   966
                structure_initialization->init_structure_values(default_value);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   967
                delete structure_initialization;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   968
              }
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   969
              break;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   970
            case initialization_analyzer_c::array_it:
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   971
              {
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   972
                generate_c_array_initialization_c *array_initialization = new generate_c_array_initialization_c(&s4o);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   973
                array_initialization->init_array_size(symbol->type_name);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   974
                array_initialization->init_array_values(default_value);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   975
                delete array_initialization;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   976
              }
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   977
              break;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   978
            default:
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   979
              default_value->accept(print_base);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   980
              break;
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
   981
          }
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   982
        }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   983
      }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   984
      s4o.print(";\n\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
   985
      
1011
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   986
      
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   987
      // Only generate the code that controls the execution of the function's body if the
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   988
      // function contains a declaration of both the EN and ENO variables
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   989
      search_var_instance_decl_c search_var(symbol);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   990
      identifier_c  en_var("EN");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   991
      identifier_c eno_var("ENO");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   992
      if (   (search_var.get_vartype(& en_var) == search_var_instance_decl_c::input_vt)
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   993
          && (search_var.get_vartype(&eno_var) == search_var_instance_decl_c::output_vt)) {
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   994
        s4o.print(s4o.indent_spaces + "// Control execution\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   995
        s4o.print(s4o.indent_spaces + "if (!EN) {\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   996
        s4o.indent_right();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   997
        s4o.print(s4o.indent_spaces + "if (__ENO != NULL) {\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   998
        s4o.indent_right();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
   999
        s4o.print(s4o.indent_spaces + "*__ENO = __BOOL_LITERAL(FALSE);\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1000
        s4o.indent_left();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1001
        s4o.print(s4o.indent_spaces + "}\n");
1016
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1002
        if (!get_datatype_info_c::is_VOID(symbol->type_name->datatype)) { // only print return variable if return datatype is not VOID
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1003
          s4o.print(s4o.indent_spaces + "return ");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1004
          symbol->derived_function_name->accept(print_base);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1005
          s4o.print(";\n");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1006
        }
1011
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1007
        s4o.indent_left();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1008
        s4o.print(s4o.indent_spaces + "}\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1009
      }
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1010
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1011
      /* (C) Function body */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1012
      generate_c_SFC_IL_ST_c generate_c_code(&s4o, symbol->derived_function_name, symbol);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1013
      symbol->function_body->accept(generate_c_code);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1014
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1015
      print_end_of_block_label(s4o);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1016
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1017
      vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1018
                    generate_c_vardecl_c::foutputassign_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1019
                    generate_c_vardecl_c::output_vt   |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1020
                    generate_c_vardecl_c::inoutput_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1021
                    generate_c_vardecl_c::eno_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1022
      vardecl->print(symbol->var_declarations_list);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1023
      delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1024
      
1016
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1025
      if (!get_datatype_info_c::is_VOID(symbol->type_name->datatype)) { // only print 'return <fname>' if return datatype is not VOID
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1026
        s4o.print(s4o.indent_spaces + "return ");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1027
        symbol->derived_function_name->accept(print_base);
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1028
        s4o.print(";\n");
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1029
      }
91bef6704b44 Add support for functions returning VOID (i.e. non-standard extension, allowing functions that do not return any data)
mjsousa
parents: 1011
diff changeset
  1030
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1031
      s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1032
      s4o.print(s4o.indent_spaces + "}\n\n\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1033
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1034
      return;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1035
    }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1036
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1037
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1038
    /*******************/
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1039
    /* Function Blocks */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1040
    /*******************/
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1041
  public:
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1042
    /* NOTE: The following function will be called twice:
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1043
     *         1st time:  s4o will reference the .h file, and print_declaration=true
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1044
     *                     Here, we generate the function prototypes...
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1045
     *         2nd time:  s4o will reference the .c file, and print_declaration=false
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1046
     *                     Here we generate the source code!
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1047
     */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1048
    /*  FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1049
    //SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused)
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1050
    static void handle_function_block(function_block_declaration_c *symbol, stage4out_c &s4o, bool print_declaration) {
945
477393b00f95 Add support for relaxed datatype model for array datatypes.
mjsousa
parents: 933
diff changeset
  1051
      generate_c_vardecl_c          *vardecl;
477393b00f95 Add support for relaxed datatype model for array datatypes.
mjsousa
parents: 933
diff changeset
  1052
      generate_c_sfcdecl_c          *sfcdecl;
477393b00f95 Add support for relaxed datatype model for array datatypes.
mjsousa
parents: 933
diff changeset
  1053
      generate_c_base_and_typeid_c   print_base(&s4o);
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1054
      TRACE("function_block_declaration_c");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1055
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1056
      /* (A) Function Block data structure declaration... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1057
      if (print_declaration) {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1058
        /* (A.1) Data structure declaration */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1059
        s4o.print("// FUNCTION_BLOCK ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1060
        symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1061
        s4o.print("\n// Data part\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1062
        s4o.print("typedef struct {\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1063
        s4o.indent_right();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1064
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1065
        /* (A.2) Public variables: i.e. the function parameters... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1066
        s4o.print(s4o.indent_spaces + "// FB Interface - IN, OUT, IN_OUT variables\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1067
        vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1068
                                           generate_c_vardecl_c::local_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1069
                                           generate_c_vardecl_c::input_vt    |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1070
                                           generate_c_vardecl_c::output_vt   |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1071
                                           generate_c_vardecl_c::inoutput_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1072
                                           generate_c_vardecl_c::en_vt       |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1073
                                           generate_c_vardecl_c::eno_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1074
        vardecl->print(symbol->var_declarations);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1075
        delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1076
        s4o.print("\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1077
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1078
        /* (A.3) Private internal variables */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1079
        s4o.print(s4o.indent_spaces + "// FB private variables - TEMP, private and located variables\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1080
        vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1081
                                           generate_c_vardecl_c::local_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1082
                                           generate_c_vardecl_c::temp_vt    |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1083
                                           generate_c_vardecl_c::private_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1084
                                           generate_c_vardecl_c::located_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1085
                                           generate_c_vardecl_c::external_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1086
        vardecl->print(symbol->var_declarations);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1087
        delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1088
        
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1089
        /* (A.4) Generate private internal variables for SFC */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1090
        sfcdecl = new generate_c_sfcdecl_c(&s4o, symbol);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1091
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::sfcdecl_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1092
        delete sfcdecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1093
        s4o.print("\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1094
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1095
        /* (A.5) Function Block data structure type name. */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1096
        s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1097
        s4o.print("} ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1098
        symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1099
        s4o.print(";\n\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1100
      }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1101
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1102
      if (!print_declaration) {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1103
        /* (A.6) Function Block inline function declaration for function invocation */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1104
        generate_c_inlinefcall_c *inlinedecl = new generate_c_inlinefcall_c(&s4o, symbol->fblock_name, symbol, FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1105
        symbol->fblock_body->accept(*inlinedecl);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1106
        delete inlinedecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1107
      }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1108
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1109
      /* (B) Constructor */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1110
      /* (B.1) Constructor name... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1111
      s4o.print(s4o.indent_spaces + "void ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1112
      symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1113
      s4o.print(FB_INIT_SUFFIX);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1114
      s4o.print("(");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1115
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1116
      /* first and only parameter is a pointer to the data */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1117
      symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1118
      s4o.print(" *");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1119
      s4o.print(FB_FUNCTION_PARAM);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1120
      s4o.print(", BOOL retain)");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1121
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1122
      if (print_declaration) {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1123
        s4o.print(";\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1124
      } else {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1125
        s4o.print(" {\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1126
        s4o.indent_right();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1127
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1128
        /* (B.2) Member initializations... */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1129
        s4o.print(s4o.indent_spaces);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1130
        vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1131
                                           generate_c_vardecl_c::constructorinit_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1132
                                           generate_c_vardecl_c::input_vt    |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1133
                                           generate_c_vardecl_c::output_vt   |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1134
                                           generate_c_vardecl_c::inoutput_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1135
                                           generate_c_vardecl_c::private_vt  |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1136
                                           generate_c_vardecl_c::located_vt  |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1137
                                           generate_c_vardecl_c::external_vt |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1138
                                           generate_c_vardecl_c::en_vt       |
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1139
                                           generate_c_vardecl_c::eno_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1140
        vardecl->print(symbol->var_declarations, NULL, FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1141
        delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1142
        s4o.print("\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1143
            
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1144
        /* (B.3) Generate private internal variables for SFC */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1145
        sfcdecl = new generate_c_sfcdecl_c(&s4o, symbol, FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1146
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::sfcinit_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1147
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1148
        s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1149
        s4o.print(s4o.indent_spaces + "}\n\n");
920
4369ce5e687f Fix bug (introduced a few commits ago) when generating SFC actions that are mapped onto variables --> Make generate_sfcdecl_c stateless (i.e. does not depend on order by which it is called).
mjsousa
parents: 918
diff changeset
  1150
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1151
        /* (C) Function with FB body */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1152
        /* (C.1) Step definitions */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1153
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::stepdef_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1154
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1155
        /* (C.2) Action definitions */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1156
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::actiondef_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1157
        delete sfcdecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1158
      }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1159
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1160
      /* (C.3) Function declaration */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1161
      s4o.print("// Code part\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1162
      /* function interface */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1163
      s4o.print("void ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1164
      symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1165
      s4o.print(FB_FUNCTION_SUFFIX);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1166
      s4o.print("(");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1167
      /* first and only parameter is a pointer to the data */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1168
      symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1169
      s4o.print(" *");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1170
      s4o.print(FB_FUNCTION_PARAM);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1171
      s4o.print(")");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1172
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1173
      if (print_declaration) {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1174
        s4o.print(";\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1175
      } else {
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1176
        s4o.print(" {\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1177
        s4o.indent_right();
1011
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1178
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1179
        // Only generate the code that controls the execution of the function's body if the
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1180
        // function contains a declaration of both the EN and ENO variables
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1181
        search_var_instance_decl_c search_var(symbol);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1182
        identifier_c  en_var("EN");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1183
        identifier_c eno_var("ENO");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1184
        if (   (search_var.get_vartype(& en_var) == search_var_instance_decl_c::input_vt)
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1185
            && (search_var.get_vartype(&eno_var) == search_var_instance_decl_c::output_vt)) {
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1186
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1187
          s4o.print(s4o.indent_spaces + "// Control execution\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1188
          s4o.print(s4o.indent_spaces + "if (!");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1189
          s4o.print(GET_VAR);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1190
          s4o.print("(");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1191
          s4o.print(FB_FUNCTION_PARAM);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1192
          s4o.print("->EN)) {\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1193
          s4o.indent_right();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1194
          s4o.print(s4o.indent_spaces);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1195
          s4o.print(SET_VAR);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1196
          s4o.print("(");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1197
          s4o.print(FB_FUNCTION_PARAM);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1198
          s4o.print("->,ENO,,__BOOL_LITERAL(FALSE));\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1199
          s4o.print(s4o.indent_spaces + "return;\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1200
          s4o.indent_left();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1201
          s4o.print(s4o.indent_spaces + "}\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1202
          s4o.print(s4o.indent_spaces + "else {\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1203
          s4o.indent_right();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1204
          s4o.print(s4o.indent_spaces);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1205
          s4o.print(SET_VAR);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1206
          s4o.print("(");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1207
          s4o.print(FB_FUNCTION_PARAM);
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1208
          s4o.print("->,ENO,,__BOOL_LITERAL(TRUE));\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1209
          s4o.indent_left();
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1210
          s4o.print(s4o.indent_spaces + "}\n");
76175defb87b Add option to not add the EN and ENO parameters to every function and FB (generated C code becomes smaller, and uses less memory for function invocations)
mjsousa
parents: 965
diff changeset
  1211
        }
907
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1212
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1213
        /* (C.4) Initialize TEMP variables */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1214
        /* function body */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1215
        s4o.print(s4o.indent_spaces + "// Initialise TEMP variables\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1216
        vardecl = new generate_c_vardecl_c(&s4o,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1217
                                           generate_c_vardecl_c::init_vf,
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1218
                                           generate_c_vardecl_c::temp_vt);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1219
        vardecl->print(symbol->var_declarations, NULL,  FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1220
        delete vardecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1221
        s4o.print("\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1222
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1223
        /* (C.5) Function code */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1224
        generate_c_SFC_IL_ST_c generate_c_code(&s4o, symbol->fblock_name, symbol, FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1225
        symbol->fblock_body->accept(generate_c_code);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1226
        print_end_of_block_label(s4o);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1227
        s4o.print(s4o.indent_spaces + "return;\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1228
        s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1229
        s4o.print(s4o.indent_spaces + "} // ");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1230
        symbol->fblock_name->accept(print_base);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1231
        s4o.print(FB_FUNCTION_SUFFIX);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1232
        s4o.print(s4o.indent_spaces + "() \n\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1233
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1234
        /* (C.6) Step undefinitions */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1235
        sfcdecl = new generate_c_sfcdecl_c(&s4o, symbol, FB_FUNCTION_PARAM"->");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1236
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::stepundef_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1237
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1238
        /* (C.7) Action undefinitions */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1239
        sfcdecl->generate(symbol->fblock_body, generate_c_sfcdecl_c::actionundef_sd);
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1240
        delete sfcdecl;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1241
      
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1242
        s4o.indent_left();
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1243
        s4o.print("\n\n\n\n");
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1244
      }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1245
      return;
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1246
    }
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1247
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1248
    
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1249
    /************/
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1250
    /* Programs */
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1251
    /************/
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)
mjsousa
parents: 906
diff changeset
  1252
  public:
c3edb882a4b2 code re-organisation. Preparing for the changes to come in the next commit (one C file for each POU)