mario@181: /*
mario@181:  * (c) 2003 Mario de Sousa
mario@181:  *
mario@181:  * Offered to the public under the terms of the GNU General Public License
mario@181:  * as published by the Free Software Foundation; either version 2 of the
mario@181:  * License, or (at your option) any later version.
mario@181:  *
mario@181:  * This program is distributed in the hope that it will be useful, but
mario@181:  * WITHOUT ANY WARRANTY; without even the implied warranty of
mario@181:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
mario@181:  * Public License for more details.
mario@181:  *
mario@181:  * This code is made available on the understanding that it will not be
mario@181:  * used in safety-critical situations without a full and competent review.
mario@181:  */
mario@181: 
mario@181: /*
mario@181:  * An IEC 61131-3 IL and ST compiler.
mario@181:  *
mario@181:  * Based on the
mario@181:  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
mario@181:  *
mario@181:  */
mario@181: 
mario@181: /* Determine the data type of a specific constant or variable.
mario@181:  * A reference to the relevant type definition is returned.
mario@181:  *
mario@181:  * For example:
mario@181:  *       22          -> returns reference to a int_type_name_c object.
mario@181:  *       22.2        -> returns reference to a real_type_name_c object.
mario@181:  *       LREAL#22.2  -> returns reference to a lreal_type_name_c object.
mario@181:  *       etc...
mario@181:  */
mario@181: 
mario@181: 
mario@181: #include "search_constant_type.hh"
mario@181: 
mario@181: #define ERROR error_exit(__FILE__,__LINE__)
mario@181: /* function defined in main.cc */
mario@181: extern void error_exit(const char *file_name, int line_no);
mario@181: 
mario@181: symbol_c *search_constant_type_c::get_type(symbol_c *constant) {
mario@181:   return (symbol_c *)constant->accept(*this);
mario@181: }
mario@181: 
mario@181: 
mario@181: /*********************/
mario@181: /* B 1.2 - Constants */
mario@181: /*********************/
mario@181: 
mario@181: /******************************/
mario@181: /* B 1.2.1 - Numeric Literals */
mario@181: /******************************/
mario@181: void *search_constant_type_c::visit(real_c *symbol) {return (void *)&constant_real_type_name;}
mario@181: void *search_constant_type_c::visit(integer_c *symbol) {return (void *)&constant_int_type_name;}
mario@181: void *search_constant_type_c::visit(binary_integer_c *symbol) {return (void *)&constant_int_type_name;}
mario@181: void *search_constant_type_c::visit(octal_integer_c *symbol) {return (void *)&constant_int_type_name;}
mario@181: void *search_constant_type_c::visit(hex_integer_c *symbol) {return (void *)&constant_int_type_name;}
mario@181: 
mario@181: void *search_constant_type_c::visit(numeric_literal_c *symbol)
mario@181:   {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));}
mario@181: void *search_constant_type_c::visit(integer_literal_c *symbol)
mario@181:   {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));}
mario@181: void *search_constant_type_c::visit(real_literal_c *symbol)
mario@181:   {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));}
mario@181: void *search_constant_type_c::visit(bit_string_literal_c *symbol)
mario@181:   {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));}
mario@181: void *search_constant_type_c::visit(boolean_literal_c *symbol)
mario@181:   {return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));}
mario@181: 
mario@181: /*******************************/
mario@181: /* B.1.2.2   Character Strings */
mario@181: /*******************************/
mario@181: void *search_constant_type_c::visit(double_byte_character_string_c *symbol) {return (void *)&wstring_type_name;}
mario@181: void *search_constant_type_c::visit(single_byte_character_string_c *symbol) {return (void *)&string_type_name;}
mario@181: 
mario@181: /***************************/
mario@181: /* B 1.2.3 - Time Literals */
mario@181: /***************************/
mario@181: /************************/
mario@181: /* B 1.2.3.1 - Duration */
mario@181: /************************/
mario@181: void *search_constant_type_c::visit(neg_time_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(duration_c *symbol) {return (void *)&time_type_name;}
mario@181: void *search_constant_type_c::visit(fixed_point_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(days_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(hours_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(minutes_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(seconds_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(milliseconds_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: 
mario@181: /************************************/
mario@181: /* B 1.2.3.2 - Time of day and Date */
mario@181: /************************************/
mario@181: void *search_constant_type_c::visit(time_of_day_c *symbol) {return (void *)&tod_type_name;}
mario@181: void *search_constant_type_c::visit(daytime_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(date_c *symbol) {return (void *)&date_type_name;}
mario@181: void *search_constant_type_c::visit(date_literal_c *symbol) {ERROR; return NULL;}  /* this member function should never be called. */
mario@181: void *search_constant_type_c::visit(date_and_time_c *symbol) {return (void *)&dt_type_name;}
mario@181: 
mario@181: real_type_name_c     search_constant_type_c::real_type_name;
mario@181: sint_type_name_c     search_constant_type_c::sint_type_name;
mario@181: lint_type_name_c     search_constant_type_c::lint_type_name;
mario@181: dint_type_name_c     search_constant_type_c::dint_type_name;
mario@181: date_type_name_c     search_constant_type_c::date_type_name;
mario@181: dword_type_name_c     search_constant_type_c::dword_type_name;
mario@181: dt_type_name_c     search_constant_type_c::dt_type_name;
mario@181: tod_type_name_c     search_constant_type_c::tod_type_name;
mario@181: udint_type_name_c     search_constant_type_c::udint_type_name;
mario@181: word_type_name_c     search_constant_type_c::word_type_name;
mario@181: wstring_type_name_c     search_constant_type_c::wstring_type_name;
mario@181: string_type_name_c     search_constant_type_c::string_type_name;
mario@181: lword_type_name_c     search_constant_type_c::lword_type_name;
mario@181: uint_type_name_c     search_constant_type_c::uint_type_name;
mario@181: lreal_type_name_c     search_constant_type_c::lreal_type_name;
mario@181: byte_type_name_c     search_constant_type_c::byte_type_name;
mario@181: usint_type_name_c     search_constant_type_c::usint_type_name;
mario@181: ulint_type_name_c     search_constant_type_c::ulint_type_name;
mario@181: bool_type_name_c     search_constant_type_c::bool_type_name;
mario@181: time_type_name_c     search_constant_type_c::time_type_name;
mario@181: int_type_name_c     search_constant_type_c::int_type_name;
mario@181: 
mario@181: constant_real_type_name_c     search_constant_type_c::constant_real_type_name;
mario@181: constant_int_type_name_c      search_constant_type_c::constant_int_type_name;
mario@181: direct_variable_type_name_c   search_constant_type_c::direct_variable_type_name;