/*
* matiec - a compiler for the programming languages defined in IEC 61131-3
*
* Copyright (C) 2009-2012 Mario de Sousa (msousa@fe.up.pt)
* 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.
*/
#include "datatype_functions.hh"
#include "../absyntax_utils/absyntax_utils.hh"
/*
* 2.5.1.5.6 Functions of time data types
* Table 30 - page 64
*/
const struct widen_entry widen_ADD_table[] = {
{ &search_constant_type_c::time_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::tod_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::dt_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetod_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::safedt_type_name, &search_constant_type_c::safedt_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetod_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safedt_type_name },
{ NULL, NULL, NULL },
};
const struct widen_entry widen_SUB_table[] = {
{ &search_constant_type_c::time_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::tod_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::dt_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetod_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::safedt_type_name, &search_constant_type_c::safedt_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::tod_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safetod_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::time_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::dt_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::safetime_type_name, &search_constant_type_c::safedt_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::tod_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::tod_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::tod_type_name, &search_constant_type_c::safetod_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetod_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::date_type_name, &search_constant_type_c::date_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safedate_type_name, &search_constant_type_c::date_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::date_type_name, &search_constant_type_c::safedate_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safedate_type_name, &search_constant_type_c::safedate_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::dt_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::dt_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::dt_type_name, &search_constant_type_c::safedt_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safedt_type_name, &search_constant_type_c::safedt_type_name, &search_constant_type_c::safetime_type_name },
{ NULL, NULL, NULL },
};
const struct widen_entry widen_MUL_table[] = {
{ &search_constant_type_c::time_type_name, &search_constant_type_c::lreal_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::real_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::dint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::int_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::sint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::ulint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::udint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::uint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::usint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::lreal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::real_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::dint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::int_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::sint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::ulint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::udint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::uint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::usint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safelreal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safereal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safedint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safesint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeulint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeudint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeuint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeusint_type_name, &search_constant_type_c::safetime_type_name },
{ NULL, NULL, NULL },
};
const struct widen_entry widen_DIV_table[] = {
{ &search_constant_type_c::time_type_name, &search_constant_type_c::lreal_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::real_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::dint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::int_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::sint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::ulint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::udint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::uint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::time_type_name, &search_constant_type_c::usint_type_name, &search_constant_type_c::time_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::lreal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::real_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::dint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::int_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::sint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::ulint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::udint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::uint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::usint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safelreal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safereal_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safedint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safesint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeulint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeudint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeuint_type_name, &search_constant_type_c::safetime_type_name },
{ &search_constant_type_c::safetime_type_name, &search_constant_type_c::safeusint_type_name, &search_constant_type_c::safetime_type_name },
{ NULL, NULL, NULL },
};
/* Search for a datatype inside a candidate_datatypes list.
* Returns: position of datatype in the list, or -1 if not found.
*/
int search_in_datatype_list(symbol_c *datatype, std::vector <symbol_c *> candidate_datatypes) {
for(unsigned int i = 0; i < candidate_datatypes.size(); i++)
if (is_type_equal(datatype, candidate_datatypes[i]))
return i;
/* Not found ! */
return -1;
}
/* A helper function... */
bool is_ANY_ELEMENTARY_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
return is_ANY_MAGNITUDE_type(type_symbol)
|| is_ANY_BIT_type (type_symbol)
|| is_ANY_STRING_type (type_symbol)
|| is_ANY_DATE_type (type_symbol);
}
/* A helper function... */
bool is_ANY_SAFEELEMENTARY_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
return is_ANY_SAFEMAGNITUDE_type(type_symbol)
|| is_ANY_SAFEBIT_type (type_symbol)
|| is_ANY_SAFESTRING_type (type_symbol)
|| is_ANY_SAFEDATE_type (type_symbol);
}
/* A helper function... */
bool is_ANY_ELEMENTARY_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
/* NOTE: doing
* return is_ANY_SAFEELEMENTARY_type() || is_ANY_ELEMENTARY_type()
* is incorrect, as the literals would never be considered compatible...
*/
return is_ANY_MAGNITUDE_compatible(type_symbol)
|| is_ANY_BIT_compatible (type_symbol)
|| is_ANY_STRING_compatible (type_symbol)
|| is_ANY_DATE_compatible (type_symbol);
}
/* A helper function... */
bool is_ANY_MAGNITUDE_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(time_type_name_c)) {return true;}
return is_ANY_NUM_type(type_symbol);
}
/* A helper function... */
bool is_ANY_SAFEMAGNITUDE_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safetime_type_name_c)) {return true;}
return is_ANY_SAFENUM_type(type_symbol);
}
/* A helper function... */
bool is_ANY_MAGNITUDE_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_MAGNITUDE_type (type_symbol)) {return true;}
if (is_ANY_SAFEMAGNITUDE_type(type_symbol)) {return true;}
return is_ANY_NUM_compatible(type_symbol);
}
/* A helper function... */
bool is_ANY_NUM_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL_type(type_symbol)) {return true;}
if (is_ANY_INT_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_SAFENUM_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
return is_ANY_SAFEREAL_type(type_symbol)
|| is_ANY_SAFEINT_type (type_symbol);
}
/* A helper function... */
bool is_ANY_NUM_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL_compatible(type_symbol)) {return true;}
if (is_ANY_INT_compatible(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_DATE_type(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;
}
/* A helper function... */
bool is_ANY_SAFEDATE_type(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;
}
/* A helper function... */
bool is_ANY_DATE_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_DATE_type (type_symbol)) {return true;}
if (is_ANY_SAFEDATE_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_STRING_type(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;}
// TODO literal_string ???
return false;
}
/* A helper function... */
bool is_ANY_SAFESTRING_type(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;
}
/* A helper function... */
bool is_ANY_STRING_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_STRING_type (type_symbol)) {return true;}
if (is_ANY_SAFESTRING_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_INT_type(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;}
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;
}
/* A helper function... */
bool is_ANY_SAFEINT_type(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;}
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;
}
/* A helper function... */
bool is_ANY_INT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_INT_type (type_symbol)) {return true;}
if (is_ANY_SAFEINT_type(type_symbol)) {return true;}
// if (is_literal_integer_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_REAL_type(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;
}
/* A helper function... */
bool is_ANY_SAFEREAL_type(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;
}
/* A helper function... */
bool is_ANY_REAL_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_REAL_type (type_symbol)) {return true;}
if (is_ANY_SAFEREAL_type(type_symbol)) {return true;}
// if (is_literal_real_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_BIT_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(bool_type_name_c)) {return true;}
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;
}
/* A helper function... */
bool is_ANY_SAFEBIT_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safebool_type_name_c)) {return true;}
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;
}
/* A helper function... */
bool is_ANY_BIT_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_ANY_BIT_type (type_symbol)) {return true;}
if (is_ANY_SAFEBIT_type(type_symbol)) {return true;}
// if (is_nonneg_literal_integer_type(type_symbol)) {return true;}
// if (is_literal_bool_type(type_symbol)) {return true;}
return false;
}
/* A helper function... */
bool is_BOOL_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(bool_type_name_c)) {return true;}
return false;
}
/* A helper function... */
bool is_SAFEBOOL_type(symbol_c *type_symbol){
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(safebool_type_name_c)) {return true;}
return false;
}
/* A helper function... */
bool is_ANY_BOOL_compatible(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (is_BOOL_type (type_symbol)) {return true;}
if (is_SAFEBOOL_type(type_symbol)) {return true;}
// if (is_literal_bool_type(type_symbol)) {return true;}
return false;
}
#if 0
/* A helper function... */
bool is_literal_integer_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(neg_integer_c)) {return true;}
return is_nonneg_literal_integer_type(type_symbol);
}
/* A helper function... */
bool is_nonneg_literal_integer_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(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;
}
/* A helper function... */
bool is_literal_real_type(symbol_c *type_symbol) {
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(real_c)) {return true;}
if (typeid(*type_symbol) == typeid(neg_real_c)) {return true;}
return false;
}
/* A helper function... */
bool is_literal_bool_type(symbol_c *type_symbol) {
bool_type_name_c bool_t;
if (type_symbol == NULL) {return false;}
if (typeid(*type_symbol) == typeid(boolean_true_c)) {return true;}
if (typeid(*type_symbol) == typeid(boolean_false_c)) {return true;}
if (is_nonneg_literal_integer_type(type_symbol))
if (sizeoftype(&bool_t) >= sizeoftype(type_symbol)) {return true;}
return false;
}
/* Determine the common data type between two data types.
* If no common data type found, return NULL.
*
* If data types are identical, return the first (actually any would do...).
* If any of the data types is a literal, we confirm that
* the literal uses less bits than the fixed size data type.
* e.g. BYTE and 1024 returns NULL
* BYTE and 255 returns BYTE
*
* If two literals, then return the literal that requires more bits...
*/
symbol_c *common_type(symbol_c *first_type, symbol_c *second_type) {
if (first_type == NULL && second_type == NULL) {return NULL;}
if (first_type == NULL) {return second_type;}
if (second_type == NULL) {return first_type;}
if (is_literal_integer_type(first_type) && is_literal_integer_type(second_type))
{return ((sizeoftype(first_type) > sizeoftype(second_type))? first_type:second_type);}
if (is_literal_real_type(first_type) && is_literal_real_type(second_type))
{return ((sizeoftype(first_type) > sizeoftype(second_type))? first_type:second_type);}
if (is_literal_bool_type(first_type) && is_literal_bool_type(second_type))
{return first_type;}
/* The following check can only be made after the is_literal_XXXX checks */
/* When two literals of the same type, with identical typeid's are checked,
* we must return the one that occupies more bits... This is done above.
*/
if (typeid(*first_type) == typeid(*second_type)) {return first_type;}
/* NOTE Although a BOOL is also an ANY_BIT, we must check it explicitly since some
* literal bool values are not literal integers...
*/
if (is_BOOL_type(first_type) && is_literal_bool_type(second_type)) {return first_type;}
if (is_BOOL_type(second_type) && is_literal_bool_type(first_type)) {return second_type;}
if (is_SAFEBOOL_type(first_type) && is_literal_bool_type(second_type)) {return first_type;}
if (is_SAFEBOOL_type(second_type) && is_literal_bool_type(first_type)) {return second_type;}
if (is_SAFEBOOL_type(first_type) && is_BOOL_type(second_type)) {return second_type;}
if (is_SAFEBOOL_type(second_type) && is_BOOL_type(first_type)) {return first_type;}
if (is_ANY_BIT_type(first_type) && is_nonneg_literal_integer_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_BIT_type(second_type) && is_nonneg_literal_integer_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEBIT_type(first_type) && is_nonneg_literal_integer_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_SAFEBIT_type(second_type) && is_nonneg_literal_integer_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEBIT_type(first_type) && is_ANY_BIT_type(second_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? second_type:NULL);}
if (is_ANY_SAFEBIT_type(second_type) && is_ANY_BIT_type(first_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_INT_type(first_type) && is_literal_integer_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_INT_type(second_type) && is_literal_integer_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEINT_type(first_type) && is_literal_integer_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_SAFEINT_type(second_type) && is_literal_integer_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEINT_type(first_type) && is_ANY_INT_type(second_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? second_type:NULL);}
if (is_ANY_SAFEINT_type(second_type) && is_ANY_INT_type(first_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_REAL_type(first_type) && is_literal_real_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_REAL_type(second_type) && is_literal_real_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEREAL_type(first_type) && is_literal_real_type(second_type))
{return ((sizeoftype(first_type) >= sizeoftype(second_type))? first_type :NULL);}
if (is_ANY_SAFEREAL_type(second_type) && is_literal_real_type(first_type))
{return ((sizeoftype(second_type) >= sizeoftype(first_type)) ? second_type:NULL);}
if (is_ANY_SAFEREAL_type(first_type) && is_ANY_REAL_type(second_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? second_type:NULL);}
if (is_ANY_SAFEREAL_type(second_type) && is_ANY_REAL_type(first_type))
{return ((sizeoftype(first_type) == sizeoftype(second_type))? first_type :NULL);}
/* the Time and Date types... */
if (is_type(first_type, safetime_type_name_c) && is_type(second_type, time_type_name_c)) {return second_type;}
if (is_type(second_type, safetime_type_name_c) && is_type( first_type, time_type_name_c)) {return first_type;}
if (is_type(first_type, safedate_type_name_c) && is_type(second_type, date_type_name_c)) {return second_type;}
if (is_type(second_type, safedate_type_name_c) && is_type( first_type, date_type_name_c)) {return first_type;}
if (is_type(first_type, safedt_type_name_c) && is_type(second_type, dt_type_name_c)) {return second_type;}
if (is_type(second_type, safedt_type_name_c) && is_type( first_type, dt_type_name_c)) {return first_type;}
if (is_type(first_type, safetod_type_name_c) && is_type(second_type, tod_type_name_c)) {return second_type;}
if (is_type(second_type, safetod_type_name_c) && is_type( first_type, tod_type_name_c)) {return first_type;}
/* no common type */
return NULL;
}
/* Return TRUE if the second (value) data type may be assigned to a variable of the first (variable) data type
* such as:
* var_type value_type
* BOOL BYTE#7 -> returns false
* INT INT#7 -> returns true
* INT 7 -> returns true
* REAL 7.89 -> returns true
* REAL 7 -> returns true
* INT 7.89 -> returns false
* SAFEBOOL BOOL#1 -> returns false !!!
* etc...
*
* NOTE: It is assumed that the var_type is the data type of an lvalue
*/
bool is_valid_assignment(symbol_c *var_type, symbol_c *value_type) {
if (var_type == NULL) {/* STAGE3_ERROR(value_type, value_type, "Var_type == NULL"); */ return false;}
if (value_type == NULL) {/* STAGE3_ERROR(var_type, var_type, "Value_type == NULL"); */ return false;}
symbol_c *common_type_symbol = common_type(var_type, value_type);
if (NULL == common_type_symbol)
return false;
return (typeid(*var_type) == typeid(*common_type_symbol));
}
/* Return TRUE if there is a common data type, otherwise return FALSE
* i.e., return TRUE if both data types may be used simultaneously in an expression
* such as:
* BOOL#0 AND BYTE#7 -> returns false
* 0 AND BYTE#7 -> returns true
* INT#10 AND INT#7 -> returns true
* INT#10 AND 7 -> returns true
* REAL#34.3 AND 7.89 -> returns true
* REAL#34.3 AND 7 -> returns true
* INT#10 AND 7.89 -> returns false
* SAFEBOOL#0 AND BOOL#1 -> returns true !!!
* etc...
*/
bool is_compatible_type(symbol_c *first_type, symbol_c *second_type) {
if (first_type == NULL || second_type == NULL) {return false;}
return (NULL != common_type(first_type, second_type));
}
#endif
bool is_type_equal(symbol_c *first_type, symbol_c *second_type)
{
if (first_type == NULL || second_type == NULL) {
return false;
}
if (is_ANY_ELEMENTARY_type(first_type)) {
if (typeid(*first_type) == typeid(*second_type))
return true;
} else /* ANY_DERIVED */
return (first_type == second_type);
return false;
}