When generating C code, use the const_value of a symbolic_variable when it is used in a subrange.
/*
* matiec - a compiler for the programming languages defined in IEC 61131-3
*
* Copyright (C) 2003-2012 Mario de Sousa (msousa@fe.up.pt)
* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant
* Copyright (C) 2012 Manuele Conti (conti.ma@alice.it)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* This code is made available on the understanding that it will not be
* used in safety-critical situations without a full and competent review.
*/
/*
* An IEC 61131-3 compiler.
*
* Based on the
* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
*
*/
/* Determine the characteristics of a specific data type
* e.g., is it an enumeration, is it an array, is it ANY_INT, etc...
*
* The methods of this class may be passed either:
* - a data type declaration symbol_c,
* OR
* - the name of a data type (identifier_c)
* In this case, we shall first serach for the basetype declaration using search_base_type_c, and then
* run the normal process.
*/
#include "absyntax_utils.hh"
#include "../main.hh" // required for ERROR() and ERROR_MSG() macros, as well as the runtime_options global variable
#include <typeinfo> // required for typeid
/**********************************************************/
/**********************************************************/
/**********************************************************/
/***** *****/
/***** *****/
/***** Some helper classes *****/
/***** *****/
/***** *****/
/**********************************************************/
/**********************************************************/
/**********************************************************/
/****************************************************************************************************/
/****************************************************************************************************/
/* Return the identifier (name) of a datatype, typically declared in a TYPE .. END_TYPE declaration */
/****************************************************************************************************/
/****************************************************************************************************/
class get_datatype_id_c: null_visitor_c {
private:
static get_datatype_id_c *singleton;
public:
static symbol_c *get_id(symbol_c *symbol) {
if (NULL == singleton) singleton = new get_datatype_id_c();
if (NULL == singleton) ERROR;
return (symbol_c *)symbol->accept(*singleton);
}
protected:
/***********************************/
/* B 1.3.1 - Elementary Data Types */
/***********************************/
void *visit(time_type_name_c *symbol) {return (void *)symbol;};
void *visit(bool_type_name_c *symbol) {return (void *)symbol;};
void *visit(sint_type_name_c *symbol) {return (void *)symbol;};
void *visit(int_type_name_c *symbol) {return (void *)symbol;};
void *visit(dint_type_name_c *symbol) {return (void *)symbol;};
void *visit(lint_type_name_c *symbol) {return (void *)symbol;};
void *visit(usint_type_name_c *symbol) {return (void *)symbol;};
void *visit(uint_type_name_c *symbol) {return (void *)symbol;};
void *visit(udint_type_name_c *symbol) {return (void *)symbol;};
void *visit(ulint_type_name_c *symbol) {return (void *)symbol;};
void *visit(real_type_name_c *symbol) {return (void *)symbol;};
void *visit(lreal_type_name_c *symbol) {return (void *)symbol;};
void *visit(date_type_name_c *symbol) {return (void *)symbol;};
void *visit(tod_type_name_c *symbol) {return (void *)symbol;};
void *visit(dt_type_name_c *symbol) {return (void *)symbol;};
void *visit(byte_type_name_c *symbol) {return (void *)symbol;};
void *visit(word_type_name_c *symbol) {return (void *)symbol;};
void *visit(lword_type_name_c *symbol) {return (void *)symbol;};
void *visit(dword_type_name_c *symbol) {return (void *)symbol;};
void *visit(string_type_name_c *symbol) {return (void *)symbol;};
void *visit(wstring_type_name_c *symbol) {return (void *)symbol;};
void *visit(safetime_type_name_c *symbol) {return (void *)symbol;};
void *visit(safebool_type_name_c *symbol) {return (void *)symbol;};
void *visit(safesint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safedint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safelint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeusint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeuint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeudint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeulint_type_name_c *symbol) {return (void *)symbol;};
void *visit(safereal_type_name_c *symbol) {return (void *)symbol;};
void *visit(safelreal_type_name_c *symbol) {return (void *)symbol;};
void *visit(safedate_type_name_c *symbol) {return (void *)symbol;};
void *visit(safetod_type_name_c *symbol) {return (void *)symbol;};
void *visit(safedt_type_name_c *symbol) {return (void *)symbol;};
void *visit(safebyte_type_name_c *symbol) {return (void *)symbol;};
void *visit(safeword_type_name_c *symbol) {return (void *)symbol;};
void *visit(safelword_type_name_c *symbol) {return (void *)symbol;};
void *visit(safedword_type_name_c *symbol) {return (void *)symbol;};
void *visit(safestring_type_name_c *symbol) {return (void *)symbol;};
void *visit(safewstring_type_name_c *symbol) {return (void *)symbol;};
/********************************/
/* B 1.3.3 - Derived data types */
/********************************/
/* simple_type_name ':' simple_spec_init */
void *visit(simple_type_declaration_c *symbol) {return symbol->simple_type_name;}
/* subrange_type_name ':' subrange_spec_init */
void *visit(subrange_type_declaration_c *symbol) {return symbol->subrange_type_name;}
/* enumerated_type_name ':' enumerated_spec_init */
void *visit(enumerated_type_declaration_c *symbol) {return symbol->enumerated_type_name;}
/* identifier ':' array_spec_init */
void *visit(array_type_declaration_c *symbol) {return symbol->identifier;}
/* structure_type_name ':' structure_specification */
void *visit(structure_type_declaration_c *symbol) {return symbol->structure_type_name;}
/* string_type_name ':' elementary_string_type_name string_type_declaration_size string_type_declaration_init */
void *visit(string_type_declaration_c *symbol) {return symbol->string_type_name;}
/* ref_type_decl: identifier ':' ref_spec_init */
void *visit(ref_type_decl_c *symbol) {return symbol->ref_type_name;}
/* NOTE: DO NOT place any code here that references symbol->anotations_map["generate_c_annotaton__implicit_type_id"] !!
* All anotations in the symbol->anotations_map[] are considered a stage4 construct. In the above example,
* That anotation is specific to the generate_c stage4 code, and must therefore NOT be referenced
* in the absyntax_utils code, as this last code should be independent of the stage4 version!
*/
/*****************************/
/* B 1.5.2 - Function Blocks */
/*****************************/
/* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
void *visit(function_block_declaration_c *symbol) {return symbol->fblock_name;}
/**********************/
/* B 1.5.3 - Programs */
/**********************/
/* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */
void *visit(program_declaration_c *symbol) {return symbol->program_type_name;}
}; // get_datatype_id_c
get_datatype_id_c *get_datatype_id_c::singleton = NULL;
/**************************************************/
/**************************************************/
/* transform elementary data type class to string */
/**************************************************/
/**************************************************/
/* A small helper class, to transform elementary data type to string.
* this allows us to generate more relevant error messages...
*/
class get_datatype_id_str_c: public null_visitor_c {
protected:
get_datatype_id_str_c(void) {};
~get_datatype_id_str_c(void) {};
private:
/* singleton class! */
static get_datatype_id_str_c *singleton;
public:
static const char *get_id_str(symbol_c *symbol) {
if (NULL == singleton) singleton = new get_datatype_id_str_c;
if (NULL == singleton) ERROR;
const char *res = (const char *)symbol->accept(*singleton);
if (NULL == res) ERROR;
return res;
}
/*************************/
/* B.1 - Common elements */
/*************************/
/*******************************************/
/* B 1.1 - Letters, digits and identifiers */
/*******************************************/
void *visit( identifier_c *symbol) {return (void *)symbol->value;};
// Should not be necessary, as datatype declarations currently use an identifier_c for their name!
// Only references to the datatype (when declaring variable, for ex., will use poutype_identifier_c
void *visit(derived_datatype_identifier_c *symbol) {return (void *)symbol->value;};
// Should not be necessary, as FB declarations currently use an identifier_c for their name!
// Only references to the FB (when declaring variable, for ex., will use poutype_identifier_c
void *visit( poutype_identifier_c *symbol) {return (void *)symbol->value;};
/***********************************/
/* B 1.3.1 - Elementary Data Types */
/***********************************/
void *visit(time_type_name_c *symbol) {return (void *)"TIME"; };
void *visit(bool_type_name_c *symbol) {return (void *)"BOOL"; };
void *visit(sint_type_name_c *symbol) {return (void *)"SINT"; };
void *visit(int_type_name_c *symbol) {return (void *)"INT"; };
void *visit(dint_type_name_c *symbol) {return (void *)"DINT"; };
void *visit(lint_type_name_c *symbol) {return (void *)"LINT"; };
void *visit(usint_type_name_c *symbol) {return (void *)"USINT"; };
void *visit(uint_type_name_c *symbol) {return (void *)"UINT"; };
void *visit(udint_type_name_c *symbol) {return (void *)"UDINT"; };
void *visit(ulint_type_name_c *symbol) {return (void *)"ULINT"; };
void *visit(real_type_name_c *symbol) {return (void *)"REAL"; };
void *visit(lreal_type_name_c *symbol) {return (void *)"LREAL"; };
void *visit(date_type_name_c *symbol) {return (void *)"DATE"; };
void *visit(tod_type_name_c *symbol) {return (void *)"TOD"; };
void *visit(dt_type_name_c *symbol) {return (void *)"DT"; };
void *visit(byte_type_name_c *symbol) {return (void *)"BYTE"; };
void *visit(word_type_name_c *symbol) {return (void *)"WORD"; };
void *visit(lword_type_name_c *symbol) {return (void *)"LWORD"; };
void *visit(dword_type_name_c *symbol) {return (void *)"DWORD"; };
void *visit(string_type_name_c *symbol) {return (void *)"STRING"; };
void *visit(wstring_type_name_c *symbol) {return (void *)"WSTRING"; };
void *visit(safetime_type_name_c *symbol) {return (void *)"SAFETIME"; };
void *visit(safebool_type_name_c *symbol) {return (void *)"SAFEBOOL"; };
void *visit(safesint_type_name_c *symbol) {return (void *)"SAFESINT"; };
void *visit(safeint_type_name_c *symbol) {return (void *)"SAFEINT"; };
void *visit(safedint_type_name_c *symbol) {return (void *)"SAFEDINT"; };
void *visit(safelint_type_name_c *symbol) {return (void *)"SAFELINT"; };
void *visit(safeusint_type_name_c *symbol) {return (void *)"SAFEUSINT"; };
void *visit(safeuint_type_name_c *symbol) {return (void *)"SAFEUINT"; };
void *visit(safeudint_type_name_c *symbol) {return (void *)"SAFEUDINT"; };
void *visit(safeulint_type_name_c *symbol) {return (void *)"SAFEULINT"; };
void *visit(safereal_type_name_c *symbol) {return (void *)"SAFEREAL"; };
void *visit(safelreal_type_name_c *symbol) {return (void *)"SAFELREAL"; };
void *visit(safedate_type_name_c *symbol) {return (void *)"SAFEDATE"; };
void *visit(safetod_type_name_c *symbol) {return (void *)"SAFETOD"; };
void *visit(safedt_type_name_c *symbol) {return (void *)"SAFEDT"; };
void *visit(safebyte_type_name_c *symbol) {return (void *)"SAFEBYTE"; };
void *visit(safeword_type_name_c *symbol) {return (void *)"SAFEWORD"; };
void *visit(safelword_type_name_c *symbol) {return (void *)"SAFELWORD"; };
void *visit(safedword_type_name_c *symbol) {return (void *)"SAFEDWORD"; };
void *visit(safestring_type_name_c *symbol) {return (void *)"SAFESTRING"; };
void *visit(safewstring_type_name_c *symbol) {return (void *)"SAFEWSTRING"; };
/********************************/
/* B.1.3.2 - Generic data types */
/********************************/
void *visit(generic_type_any_c *symbol) {return (void *)"ANY"; };
/********************************/
/* B 1.3.3 - Derived data types */
/********************************/
/* simple_type_name ':' simple_spec_init */
void *visit(simple_type_declaration_c *symbol) {return symbol->simple_type_name->accept(*this);}
/* subrange_type_name ':' subrange_spec_init */
void *visit(subrange_type_declaration_c *symbol) {return symbol->subrange_type_name->accept(*this);}
/* enumerated_type_name ':' enumerated_spec_init */
void *visit(enumerated_type_declaration_c *symbol) {return symbol->enumerated_type_name->accept(*this);}
/* identifier ':' array_spec_init */
void *visit(array_type_declaration_c *symbol) {return symbol->identifier->accept(*this);}
/* structure_type_name ':' structure_specification */
void *visit(structure_type_declaration_c *symbol) {return symbol->structure_type_name->accept(*this);}
/* string_type_name ':' elementary_string_type_name string_type_declaration_size string_type_declaration_init */
void *visit(string_type_declaration_c *symbol) {return symbol->string_type_name->accept(*this);}
/* ref_type_decl: identifier ':' ref_spec_init */
void *visit(ref_type_decl_c *symbol) {return symbol->ref_type_name->accept(*this);}
/* NOTE: DO NOT place any code here that references symbol->anotations_map["generate_c_annotaton__implicit_type_id"] !!
* All anotations in the symbol->anotations_map[] are considered a stage4 construct. In the above example,
* That anotation is specific to the generate_c stage4 code, and must therefore NOT be referenced
* in the absyntax_utils code, as this last code should be independent of the stage4 version!
*/
/***********************/
/* B 1.5.1 - Functions */
/***********************/
/* Functions are not really datatypes, but we include it here as it helps in printing out error messages! */
/* Currently this is needed only by remove_forward_depencies_c::print_circ_error() */
/* FUNCTION derived_function_name ':' elementary_type_name io_OR_function_var_declarations_list function_body END_FUNCTION */
void *visit( function_declaration_c *symbol) {return symbol->derived_function_name->accept(*this);}
/*****************************/
/* B 1.5.2 - Function Blocks */
/*****************************/
/* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
void *visit(function_block_declaration_c *symbol) {return symbol->fblock_name->accept(*this);}
/**********************/
/* B 1.5.3 - Programs */
/**********************/
/* PROGRAM program_type_name program_var_declarations_list function_block_body END_PROGRAM */
void *visit( program_declaration_c *symbol) {return symbol->program_type_name->accept(*this);}
};
get_datatype_id_str_c *get_datatype_id_str_c::singleton = NULL;
/*********************************************************/
/*********************************************************/
/* get the datatype of a field inside a struct data type */
/*********************************************************/
/*********************************************************/
class get_struct_info_c : null_visitor_c {
private:
symbol_c *current_field;
/* singleton class! */
static get_struct_info_c *singleton;
public:
get_struct_info_c(void) {current_field = NULL;}
static symbol_c *get_field_type_id(symbol_c *struct_type, symbol_c *field_name) {
if (NULL == singleton) singleton = new get_struct_info_c;
if (NULL == singleton) ERROR;
singleton->current_field = field_name;
return (symbol_c *)struct_type->accept(*singleton);
}
private:
/*************************/
/* B.1 - Common elements */
/*************************/
/********************************/
/* B 1.3.3 - Derived data types */
/********************************/
/* structure_type_name ':' structure_specification */
/* NOTE: this is only used inside a TYPE ... END_TYPE declaration. It is never used directly when declaring a new variable! */
/* NOTE: structure_specification will point to either initialized_structure_c OR structure_element_declaration_list_c */
void *visit(structure_type_declaration_c *symbol) {return symbol->structure_specification->accept(*this);}
/* structure_type_name ASSIGN structure_initialization */
/* structure_initialization may be NULL ! */
// SYM_REF2(initialized_structure_c, structure_type_name, structure_initialization)
/* NOTE: only the initialized structure is never used when declaring a new variable instance */
void *visit(initialized_structure_c *symbol) {return symbol->structure_type_name->accept(*this);}
/* helper symbol for structure_declaration */
/* structure_declaration: STRUCT structure_element_declaration_list END_STRUCT */
/* structure_element_declaration_list structure_element_declaration ';' */
void *visit(structure_element_declaration_list_c *symbol) {
/* now search the structure declaration */
for(int i = 0; i < symbol->n; i++) {
void *tmp = symbol->elements[i]->accept(*this);
if (NULL != tmp) return tmp;
}
return NULL; // not found!!
}
/* structure_element_name ':' spec_init */
void *visit(structure_element_declaration_c *symbol) {
if (compare_identifiers(symbol->structure_element_name, current_field) == 0)
return symbol->spec_init; /* found the type of the element we were looking for! */
return NULL; /* not the element we are looking for! */
}
/* helper symbol for structure_initialization */
/* structure_initialization: '(' structure_element_initialization_list ')' */
/* structure_element_initialization_list ',' structure_element_initialization */
void *visit(structure_element_initialization_list_c *symbol) {ERROR; return NULL;} /* should never get called... */
/* structure_element_name ASSIGN value */
void *visit(structure_element_initialization_c *symbol) {ERROR; return NULL;} /* should never get called... */
/**************************************/
/* B.1.5 - Program organization units */
/**************************************/
/*****************************/
/* B 1.5.2 - Function Blocks */
/*****************************/
/* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
// SYM_REF4(function_block_declaration_c, fblock_name, var_declarations, fblock_body, unused)
void *visit(function_block_declaration_c *symbol) {
/* now search the function block declaration for the variable... */
search_var_instance_decl_c search_decl(symbol);
return search_decl.get_decl(current_field);
}
/*********************************************/
/* B.1.6 Sequential function chart elements */
/*********************************************/
/* INITIAL_STEP step_name ':' action_association_list END_STEP */
// SYM_REF2(initial_step_c, step_name, action_association_list)
void *visit(initial_step_c *symbol) {
identifier_c T("T"); identifier_c X("X");
/* Hard code the datatypes of the implicit variables Stepname.X and Stepname.T */
if (compare_identifiers(&T, current_field) == 0) return &get_datatype_info_c::time_type_name;
if (compare_identifiers(&X, current_field) == 0) return &get_datatype_info_c::bool_type_name;
return NULL;
}
/* STEP step_name ':' action_association_list END_STEP */
// SYM_REF2(step_c, step_name, action_association_list)
/* The code here should be identicial to the code in the visit(initial_step_c *) visitor! So we simply call the other visitor! */
void *visit(step_c *symbol) {initial_step_c initial_step(NULL, NULL); return initial_step.accept(*this);}
}; // get_struct_info_c
get_struct_info_c *get_struct_info_c::singleton = NULL;
/**********************************************************/
/**********************************************************/
/**********************************************************/
/***** *****/
/***** *****/
/***** GET_DATATYPE_INFO_C *****/
/***** *****/
/***** *****/
/**********************************************************/
/**********************************************************/
/**********************************************************/
const char *get_datatype_info_c::get_id_str(symbol_c *datatype) {
return get_datatype_id_str_c::get_id_str(datatype);
}
symbol_c *get_datatype_info_c::get_id(symbol_c *datatype) {
return get_datatype_id_c::get_id(datatype);
}
symbol_c *get_datatype_info_c::get_struct_field_type_id(symbol_c *struct_datatype, symbol_c *struct_fieldname) {
return get_struct_info_c::get_field_type_id(struct_datatype, struct_fieldname);
}
symbol_c *get_datatype_info_c::get_array_storedtype_id(symbol_c *type_symbol) {
// returns the datatype of the variables stored in the array
array_specification_c *symbol = NULL;
if (NULL == symbol) symbol = dynamic_cast<array_specification_c *>(type_symbol);
if (NULL == symbol) symbol = dynamic_cast<array_specification_c *>(search_base_type_c::get_basetype_decl(type_symbol));
if (NULL != symbol)
return symbol->non_generic_type_name;
return NULL; // this is not an array!
}
/* Returns true if both datatypes are equivalent (not necessarily equal!).
* WARNING: May return true even though the datatypes are not the same/identicial!!!
* This occurs when at least one of the datatypes is of a generic
* datatype (or a REF_TO a generic datatype).
* (Generic dataypes: ANY, ANY_INT, ANY_NUM, ...)
* NOTE: Currently only the ANY generic datatype is implemented!
* NOTE: Currently stage1_2 only allows the use of the ANY keyword when in conjuntion with
* the REF_TO keyword (i.e. REF_TO ANY), so when handling non REF_TO datatypes,
* this function will currently only return true if the dataypes are identicial.
*/
/* NOTE: matiec supports a strict and a relaxed data type model. Which datatype model to use is chosen
* as a command line option.
*
*
* The Strict Datatype Model
* =========================
* The strict datatype model used by matiec considers any implicitly defined datatype
* (e.g. an array datatype defined in the variable declaration itself, instead of inside a TYPE ... END_TYPE
* construct) to be different (i.e. not the same datatype, and therefore not compatible) to any other
* datatype, including with datatypes declared identically to the implicit datatype.
* e.g.
* TYPE my_array_t: ARRAY [1..3] OF INT; END_TYPE;
* FUNCTION_BLOCK FOO
* VAR my_array: ARRAY [1..3] OF INT; END_VAR
* ...
* END_FUNCTION_BLOCK
*
* In the abive code, my_array is NOT considered to te compatible with my_Array_t !!!
*
* In essence, the currently supported datatype model considers all datatypes to be different to each other,
* even though the stored data is the same (Let us call this rule (0))!
* There are 2 exceptions to the above rule:
* (1) Datatypes that are directly derived from other datatypes.
* (this rule is specified in the standard, so we follow it!)
* (2) REF_TO datatypes that reference the same datatype
* (I dont think the standard says anything about this!)
* (This rule should actually be part of the relaxed datatype model, but for now we
* will leave it in the strict datatype model)
*
* TYPE
* my_array_1_t: ARRAY [1..3] OF INT;
* my_array_2_t: ARRAY [1..3] OF INT;
* my_array_3_t: my_array_1_t;
* A_ref_t: REF_TO my_array_1_t;
* B_ref_t: REF_TO my_array_1_t;
* C_ref_t: A_ref_t;
* END_TYPE;
*
* In the above code, my_array_1_t is a distinct datatype to my_array_2_t
* (this is different to C and C++, where they would be considered the same datatype!)
* (following rule (0))
* In the above code, my_array_3_t is the same datatype as my_array_1_t
* (following rule (1))
* In the above code, A_ref_t is the same datatype as B_ref_t
* (following rule (2))
* In the above code, A_ref_t is the same datatype as C_ref_t
* (following rule (1))
*
* Note that rule (0) means that a function/FB with a parameter whose datatype is implicitly defined
* can never be passed a value!
* FUNCTION_BLOCK FOO
* VAR_INPUT my_array: ARRAY [1..3] OF INT; END_VAR
* ...
* END_FUNCTION_BLOCK
*
* Any call to FB foo can never pass a value to parameter my_array, as its datatype is distinct
* to all other datatypes, and therefore passing any other variable to my_array will result in an
* 'incompatible datatypes' error!
* The above seems natural o me (Mario) in a programming language that is very strongly typed.
*
* However, if we did not have exception (2), the following would also be invalid:
* TYPE my_array_t: ARRAY [1..3] OF INT; END_TYPE;
* FUNCTION_BLOCK FOO_t
* VAR_INPUT my_array: REF_TO my_array_t; END_VAR
* ...
* END_FUNCTION_BLOCK
*
* FUNCTION_BLOCK BAR
* VAR
* my_array: my_array_t;
* foo: FOO_t;
* END_VAR
* foo(REF(my_array)); <----- invalid, without rule 2!!
* ...
* END_FUNCTION_BLOCK
*
* Rule/exception (2) goes against the datatype model used for all other datatypes.
* This rule was adopted as without it, the datatype of the value returned by the REF()
* operator would be considered distinct to all other datatypes, and therefore the
* REF() operator would be essentially useless.
*
*
* The Relaxed Datatype Model
* ==========================
* In the relaxed datatype model, the same rules as the strict datatype model are followed, with the
* exception of implicitly defined array datatypes, which are now considered equal if they define
* identical datatypes.
* This means that in the following example
* TYPE
* array_t: ARRAY [1..3] OF INT;
* END_TYPE;
* VAR
* array_var1: array_t;
* array_var2: ARRAY [1..3] OF INT;
* array_var3: ARRAY [1..3] OF INT;
* END_VAR
*
* all three variables (array_var1, array_var2, and array_var3) are considered as being of the
* same datatype.
*
* Note that the strict datatype model currently actually uses a relaxed datatype model for
* REF_TO datatypes, so in both the relaxed and strict datatype models matiec currently uses a
* relaxed datatype equivalince for REF_TO datatypes.
*/
bool get_datatype_info_c::is_type_equal(symbol_c *first_type, symbol_c *second_type) {
if (!is_type_valid( first_type)) {return false;}
if (!is_type_valid(second_type)) {return false;}
/* GENERIC DATATYPES */
/* For the moment, we only support the ANY generic datatype! */
if ((is_ANY_generic_type( first_type)) ||
(is_ANY_generic_type(second_type))) {return true;}
/* ANY_ELEMENTARY */
if ((is_ANY_ELEMENTARY_compatible(first_type)) &&
(typeid(*first_type) == typeid(*second_type))) {return true;}
if ( is_ANY_ELEMENTARY_compatible(first_type)
|| is_ANY_ELEMENTARY_compatible(second_type)) {return false;}
/* ANY_DERIVED */
// from now on, we are sure both datatypes are derived...
if (is_ref_to(first_type) && is_ref_to(second_type)) {
return is_type_equal(search_base_type_c::get_basetype_decl(get_ref_to(first_type )),
search_base_type_c::get_basetype_decl(get_ref_to(second_type)));
}
// check for same datatype
if (first_type == second_type) {return true;}
// remaining type equivalence rules are not applied in the strict datatype model
if (false == runtime_options.relaxed_datatype_model) {return false;}
// check for array equivalence usig the relaxed datatype model
if (is_arraytype_equal_relaxed(first_type, second_type)) {return true;}
return false;
}
/* A local helper function that transforms strings conatining signed_integers into a normalized
* form, so they can be compared for equality.
* examples:
* 82 -> 82
* 8_2 -> 82
* +82 -> 82
* 082 -> 82
* +082 -> 82
* -82 -> -82
* -8_2 -> -82
* -082 -> -82
*/
#include <string.h> /* required for strlen() */
static std::string normalize_integer(symbol_c *symbol) {
integer_c *token = dynamic_cast<integer_c *>(symbol);
if (NULL == token) ERROR;
std::string str = "";
bool leading_zero = true;
unsigned int offset = 0;
// handle any possible leading '-' or '+'
if (token->value[0] == '-') {
// '-' -> retained
str += token->value[0];
offset++;
} else if (token->value[0] == '+')
// '+' -> skip, so '+8' and '8' will both result in '8'
offset++;
for (unsigned int i = offset; i < strlen(token->value); i++) {
if (leading_zero && (token->value[i] != '0'))
leading_zero = false;
if (!leading_zero && token->value[i] != '_')
str += token->value[i];
}
return str;
}
/* A helper method to get_datatype_info_c::is_type_equal()
* Assuming the relaxed datatype model, determine whether the two array datatypes are equal/equivalent
*/
bool get_datatype_info_c::is_arraytype_equal_relaxed(symbol_c *first_type, symbol_c *second_type) {
symbol_c *basetype_1 = search_base_type_c::get_basetype_decl( first_type);
symbol_c *basetype_2 = search_base_type_c::get_basetype_decl(second_type);
array_specification_c *array_1 = dynamic_cast<array_specification_c *>(basetype_1);
array_specification_c *array_2 = dynamic_cast<array_specification_c *>(basetype_2);
// are they both array datatypes?
if ((NULL == array_1) || (NULL == array_2))
return false;
// number of subranges
array_subrange_list_c *subrange_list_1 = dynamic_cast<array_subrange_list_c *>(array_1->array_subrange_list);
array_subrange_list_c *subrange_list_2 = dynamic_cast<array_subrange_list_c *>(array_2->array_subrange_list);
if ((NULL == subrange_list_1) || (NULL == subrange_list_2)) ERROR;
if (subrange_list_1->n != subrange_list_2->n)
return false;
// comparison of each subrange start and end elements
for (int i = 0; i < subrange_list_1->n; i++) {
subrange_c *subrange_1 = dynamic_cast<subrange_c *>(subrange_list_1->elements[i]);
subrange_c *subrange_2 = dynamic_cast<subrange_c *>(subrange_list_2->elements[i]);
if ((NULL == subrange_1) || (NULL == subrange_2)) ERROR;
#if 0
/* An alternative method of checking whether the subranges have the same values, using the result of the constant folding agorithm.
* This method has the drawback that it inserts a dependency on having to run the constant folding algorithm before
* the get_datatype_info_c::is_type_equal() method is called.
* The probably slower alternative of comparing the strings themselves is therefor used.
*/
if (!constant_folding_c::is_equal_cvalue(subrange_1->lower_limit, subrange_2->lower_limit)) return false;
if (!constant_folding_c::is_equal_cvalue(subrange_1->upper_limit, subrange_2->upper_limit)) return false;
#endif
if (normalize_integer(subrange_1->lower_limit) != normalize_integer(subrange_2->lower_limit)) return false;
if (normalize_integer(subrange_1->upper_limit) != normalize_integer(subrange_2->upper_limit)) return false;
}
return is_type_equal(search_base_type_c::get_basetype_decl(array_1->non_generic_type_name),
search_base_type_c::get_basetype_decl(array_2->non_generic_type_name));
}
bool get_datatype_info_c::is_type_valid(symbol_c *type) {
if (NULL == type) {return false;}
if (typeid(*type) == typeid(invalid_type_name_c)) {return false;}
return true;
}
/* returns the datatype the REF_TO datatype references/points to... */
symbol_c *get_datatype_info_c::get_ref_to(symbol_c *type_symbol) {
ref_type_decl_c *type1 = dynamic_cast<ref_type_decl_c *>(type_symbol);
if (NULL != type1) type_symbol = type1->ref_spec_init;
ref_spec_init_c *type2 = dynamic_cast<ref_spec_init_c *>(type_symbol);
if (NULL != type2) type_symbol = type2->ref_spec;
ref_spec_c *type3 = dynamic_cast<ref_spec_c *>(type_symbol);
if (NULL != type3) return type3->type_name;
return NULL; /* this is not a ref datatype!! */
}
bool get_datatype_info_c::is_ref_to(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(ref_type_decl_c)) {return true;} /* identifier ':' ref_spec_init */
if (typeid(*type_decl) == typeid(ref_spec_init_c)) {return true;} /* ref_spec [ ASSIGN ref_initialization ]; */
if (typeid(*type_decl) == typeid(ref_spec_c)) {return true;} /* REF_TO (non_generic_type_name | function_block_type_name) */
return false;
}
bool get_datatype_info_c::is_sfc_initstep(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(initial_step_c)) {return true;} /* INITIAL_STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */
return false;
}
bool get_datatype_info_c::is_sfc_step(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(initial_step_c)) {return true;} /* INITIAL_STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */
if (typeid(*type_decl) == typeid( step_c)) {return true;} /* STEP step_name ':' action_association_list END_STEP */ /* A pseudo data type! */
return false;
}
bool get_datatype_info_c::is_function_block(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(function_block_declaration_c)) {return true;} /* FUNCTION_BLOCK derived_function_block_name io_OR_other_var_declarations function_block_body END_FUNCTION_BLOCK */
return false;
}
bool get_datatype_info_c::is_subrange(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_equivtype_decl(type_symbol); /* NOTE: do NOT call search_base_type_c !! */
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(subrange_type_declaration_c)) {return true;} /* subrange_type_name ':' subrange_spec_init */
if (typeid(*type_decl) == typeid(subrange_spec_init_c)) {return true;} /* subrange_specification ASSIGN signed_integer */
if (typeid(*type_decl) == typeid(subrange_specification_c)) {return true;} /* integer_type_name '(' subrange')' */
if (typeid(*type_decl) == typeid(subrange_c)) {ERROR;} /* signed_integer DOTDOT signed_integer */
return false;
}
bool get_datatype_info_c::is_enumerated(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(enumerated_type_declaration_c)) {return true;} /* enumerated_type_name ':' enumerated_spec_init */
if (typeid(*type_decl) == typeid(enumerated_spec_init_c)) {return true;} /* enumerated_specification ASSIGN enumerated_value */
if (typeid(*type_decl) == typeid(enumerated_value_list_c)) {return true;} /* enumerated_value_list ',' enumerated_value */ /* once we change the way we handle enums, this will probably become an ERROR! */
if (typeid(*type_decl) == typeid(enumerated_value_c)) {ERROR;} /* enumerated_type_name '#' identifier */
return false;
}
bool get_datatype_info_c::is_array(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(array_type_declaration_c)) {return true;} /* identifier ':' array_spec_init */
if (typeid(*type_decl) == typeid(array_spec_init_c)) {return true;} /* array_specification [ASSIGN array_initialization} */
if (typeid(*type_decl) == typeid(array_specification_c)) {return true;} /* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */
if (typeid(*type_decl) == typeid(array_subrange_list_c)) {ERROR;} /* array_subrange_list ',' subrange */
if (typeid(*type_decl) == typeid(array_initial_elements_list_c)) {ERROR;} /* array_initialization: '[' array_initial_elements_list ']' */ /* array_initial_elements_list ',' array_initial_elements */
if (typeid(*type_decl) == typeid(array_initial_elements_c)) {ERROR;} /* integer '(' [array_initial_element] ')' */
return false;
}
bool get_datatype_info_c::is_structure(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(structure_type_declaration_c)) {return true;} /* structure_type_name ':' structure_specification */
if (typeid(*type_decl) == typeid(initialized_structure_c)) {return true;} /* structure_type_name ASSIGN structure_initialization */
if (typeid(*type_decl) == typeid(structure_element_declaration_list_c)) {return true;} /* structure_declaration: STRUCT structure_element_declaration_list END_STRUCT */ /* structure_element_declaration_list structure_element_declaration ';' */
if (typeid(*type_decl) == typeid(structure_element_declaration_c)) {ERROR;} /* structure_element_name ':' *_spec_init */
if (typeid(*type_decl) == typeid(structure_element_initialization_list_c)) {ERROR;} /* structure_initialization: '(' structure_element_initialization_list ')' */ /* structure_element_initialization_list ',' structure_element_initialization */
if (typeid(*type_decl) == typeid(structure_element_initialization_c)) {ERROR;} /* structure_element_name ASSIGN value */
return false;
}
bool get_datatype_info_c::is_ANY_generic_type(symbol_c *type_symbol) {
symbol_c *type_decl = search_base_type_c::get_basetype_decl(type_symbol);
if (NULL == type_decl) {return false;}
if (typeid(*type_decl) == typeid(generic_type_any_c)) {return true;} /* The ANY keyword! */
return false;
}
bool get_datatype_info_c::is_ANY_ELEMENTARY(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_MAGNITUDE(type_symbol)) {return true;}
if (is_ANY_BIT (type_symbol)) {return true;}
if (is_ANY_STRING (type_symbol)) {return true;}
if (is_ANY_DATE (type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEELEMENTARY(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_SAFEMAGNITUDE(type_symbol)) {return true;}
if (is_ANY_SAFEBIT (type_symbol)) {return true;}
if (is_ANY_SAFESTRING (type_symbol)) {return true;}
if (is_ANY_SAFEDATE (type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_ELEMENTARY_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_ELEMENTARY (type_symbol)) {return true;}
if (is_ANY_SAFEELEMENTARY(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_MAGNITUDE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_TIME(type_symbol)) {return true;}
if (is_ANY_NUM(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEMAGNITUDE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_SAFETIME(type_symbol)) {return true;}
if (is_ANY_SAFENUM(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_MAGNITUDE_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_MAGNITUDE (type_symbol)) {return true;}
if (is_ANY_SAFEMAGNITUDE(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_MAGNITUDE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(time_type_name_c)) {return true;}
if (is_ANY_signed_NUM(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_SAFEMAGNITUDE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safetime_type_name_c)) {return true;}
return is_ANY_signed_SAFENUM(type_symbol);
}
bool get_datatype_info_c::is_ANY_signed_MAGNITUDE_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_signed_MAGNITUDE (type_symbol)) {return true;}
if (is_ANY_signed_SAFEMAGNITUDE(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_NUM(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL(type_symbol)) {return true;}
if (is_ANY_INT (type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFENUM(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_SAFEREAL(type_symbol)) {return true;}
if (is_ANY_SAFEINT (type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_NUM_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_NUM (type_symbol)) {return true;}
if (is_ANY_SAFENUM(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_NUM(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL (type_symbol)) {return true;}
if (is_ANY_signed_INT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_SAFENUM(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_SAFEREAL (type_symbol)) {return true;}
if (is_ANY_signed_SAFEINT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_NUM_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_signed_NUM (type_symbol)) {return true;}
if (is_ANY_signed_SAFENUM(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_INT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_signed_INT (type_symbol)) {return true;}
if (is_ANY_unsigned_INT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEINT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_signed_SAFEINT (type_symbol)) {return true;}
if (is_ANY_unsigned_SAFEINT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_INT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_INT (type_symbol)) {return true;}
if (is_ANY_SAFEINT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_INT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(sint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(int_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(dint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(lint_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_SAFEINT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safesint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safeint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safedint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safelint_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_signed_INT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_signed_INT (type_symbol)) {return true;}
if (is_ANY_signed_SAFEINT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_unsigned_INT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(usint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(uint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(udint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(ulint_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_unsigned_SAFEINT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safeusint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safeuint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safeudint_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safeulint_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_unsigned_INT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_unsigned_INT (type_symbol)) {return true;}
if (is_ANY_unsigned_SAFEINT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_REAL(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(real_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(lreal_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEREAL(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safereal_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safelreal_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_REAL_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL (type_symbol)) {return true;}
if (is_ANY_SAFEREAL(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_nBIT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(byte_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(word_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(dword_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(lword_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEnBIT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safebyte_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safeword_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safedword_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safelword_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_nBIT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_nBIT (type_symbol)) {return true;}
if (is_ANY_SAFEnBIT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_BOOL(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(bool_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_SAFEBOOL(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safebool_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_BOOL_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_BOOL (type_symbol)) {return true;}
if (is_SAFEBOOL(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_BIT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_BOOL (type_symbol)) {return true;}
if (is_ANY_nBIT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEBIT(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_SAFEBOOL (type_symbol)) {return true;}
if (is_ANY_SAFEnBIT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_BIT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_BIT (type_symbol)) {return true;}
if (is_ANY_SAFEBIT(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_TIME(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(time_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_SAFETIME(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safetime_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_TIME_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_TIME (type_symbol)) {return true;}
if (is_SAFETIME(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_DATE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(date_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(tod_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(dt_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFEDATE(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safedate_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safetod_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safedt_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_DATE_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_DATE (type_symbol)) {return true;}
if (is_ANY_SAFEDATE(type_symbol)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_STRING(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(string_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(wstring_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_SAFESTRING(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safestring_type_name_c)) {return true;}
if (typeid(*type_symbol) == typeid(safewstring_type_name_c)) {return true;}
return false;
}
bool get_datatype_info_c::is_ANY_STRING_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_STRING (type_symbol)) {return true;}
if (is_ANY_SAFESTRING(type_symbol)) {return true;}
return false;
}
/* Can't we do away with this?? */
bool get_datatype_info_c::is_ANY_REAL_literal(symbol_c *type_symbol) {
if (type_symbol == NULL) {return true;} /* Please make sure things will work correctly before changing this to false!! */
if (typeid(*type_symbol) == typeid(real_c)) {return true;}
if (typeid(*type_symbol) == typeid(neg_real_c)) {return true;}
return false;
}
/* Can't we do away with this?? */
bool get_datatype_info_c::is_ANY_INT_literal(symbol_c *type_symbol) {
if (type_symbol == NULL) {return true;} /* Please make sure things will work correctly before changing this to false!! */
if (typeid(*type_symbol) == typeid(integer_c)) {return true;}
if (typeid(*type_symbol) == typeid(neg_integer_c)) {return true;}
if (typeid(*type_symbol) == typeid(binary_integer_c)) {return true;}
if (typeid(*type_symbol) == typeid(octal_integer_c)) {return true;}
if (typeid(*type_symbol) == typeid(hex_integer_c)) {return true;}
return false;
}
invalid_type_name_c get_datatype_info_c::invalid_type_name;
/**********************/
/* B.1.3 - Data types */
/**********************/
/***********************************/
/* B 1.3.1 - Elementary Data Types */
/***********************************/
lreal_type_name_c get_datatype_info_c::lreal_type_name;
real_type_name_c get_datatype_info_c::real_type_name;
lint_type_name_c get_datatype_info_c::lint_type_name;
dint_type_name_c get_datatype_info_c::dint_type_name;
int_type_name_c get_datatype_info_c::int_type_name;
sint_type_name_c get_datatype_info_c::sint_type_name;
ulint_type_name_c get_datatype_info_c::ulint_type_name;
udint_type_name_c get_datatype_info_c::udint_type_name;
uint_type_name_c get_datatype_info_c::uint_type_name;
usint_type_name_c get_datatype_info_c::usint_type_name;
lword_type_name_c get_datatype_info_c::lword_type_name;
dword_type_name_c get_datatype_info_c::dword_type_name;
word_type_name_c get_datatype_info_c::word_type_name;
byte_type_name_c get_datatype_info_c::byte_type_name;
bool_type_name_c get_datatype_info_c::bool_type_name;
wstring_type_name_c get_datatype_info_c::wstring_type_name;
string_type_name_c get_datatype_info_c::string_type_name;
dt_type_name_c get_datatype_info_c::dt_type_name;
date_type_name_c get_datatype_info_c::date_type_name;
tod_type_name_c get_datatype_info_c::tod_type_name;
time_type_name_c get_datatype_info_c::time_type_name;
/******************************************************/
/* Extensions to the base standard as defined in */
/* "Safety Software Technical Specification, */
/* Part 1: Concepts and Function Blocks, */
/* Version 1.0 – Official Release" */
/* by PLCopen - Technical Committee 5 - 2006-01-31 */
/******************************************************/
safelreal_type_name_c get_datatype_info_c::safelreal_type_name;
safereal_type_name_c get_datatype_info_c::safereal_type_name;
safelint_type_name_c get_datatype_info_c::safelint_type_name;
safedint_type_name_c get_datatype_info_c::safedint_type_name;
safeint_type_name_c get_datatype_info_c::safeint_type_name;
safesint_type_name_c get_datatype_info_c::safesint_type_name;
safeulint_type_name_c get_datatype_info_c::safeulint_type_name;
safeudint_type_name_c get_datatype_info_c::safeudint_type_name;
safeuint_type_name_c get_datatype_info_c::safeuint_type_name;
safeusint_type_name_c get_datatype_info_c::safeusint_type_name;
safelword_type_name_c get_datatype_info_c::safelword_type_name;
safedword_type_name_c get_datatype_info_c::safedword_type_name;
safeword_type_name_c get_datatype_info_c::safeword_type_name;
safebyte_type_name_c get_datatype_info_c::safebyte_type_name;
safebool_type_name_c get_datatype_info_c::safebool_type_name;
safewstring_type_name_c get_datatype_info_c::safewstring_type_name;
safestring_type_name_c get_datatype_info_c::safestring_type_name;
safedt_type_name_c get_datatype_info_c::safedt_type_name;
safedate_type_name_c get_datatype_info_c::safedate_type_name;
safetod_type_name_c get_datatype_info_c::safetod_type_name;
safetime_type_name_c get_datatype_info_c::safetime_type_name;