author | mario |
Tue, 26 May 2009 18:04:27 +0200 | |
changeset 178 | 1622dc05c6ca |
parent 177 | 697562a5da7c |
permissions | -rwxr-xr-x |
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/* |
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* (c) 2003 Mario de Sousa |
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* |
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* Offered to the public under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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* Public License for more details. |
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* |
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* This code is made available on the understanding that it will not be |
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* used in safety-critical situations without a full and competent review. |
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*/ |
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/* |
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* An IEC 61131-3 IL and ST compiler. |
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* |
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* Based on the |
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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* |
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*/ |
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/* Determine the data type of a specific constant or variable. |
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* A reference to the relevant type definition is returned. |
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* |
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* For example: |
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* 22 -> returns reference to a int_type_name_c object. |
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* 22.2 -> returns reference to a real_type_name_c object. |
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* LREAL#22.2 -> returns reference to a lreal_type_name_c object. |
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* etc... |
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*/ |
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class search_constant_type_c: public search_visitor_c { |
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public: |
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/**********************/ |
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/* B.1.3 - Data types */ |
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/**********************/ |
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/***********************************/ |
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/* B 1.3.1 - Elementary Data Types */ |
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/***********************************/ |
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static real_type_name_c real_type_name; |
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static sint_type_name_c sint_type_name; |
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static lint_type_name_c lint_type_name; |
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static dint_type_name_c dint_type_name; |
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static date_type_name_c date_type_name; |
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static dword_type_name_c dword_type_name; |
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static dt_type_name_c dt_type_name; |
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static tod_type_name_c tod_type_name; |
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static udint_type_name_c udint_type_name; |
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static word_type_name_c word_type_name; |
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static wstring_type_name_c wstring_type_name; |
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static string_type_name_c string_type_name; |
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static lword_type_name_c lword_type_name; |
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static uint_type_name_c uint_type_name; |
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static lreal_type_name_c lreal_type_name; |
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static byte_type_name_c byte_type_name; |
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static usint_type_name_c usint_type_name; |
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static ulint_type_name_c ulint_type_name; |
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static bool_type_name_c bool_type_name; |
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static time_type_name_c time_type_name; |
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static int_type_name_c int_type_name; |
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static constant_real_type_name_c constant_real_type_name; |
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static constant_int_type_name_c constant_int_type_name; |
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static direct_variable_type_name_c direct_variable_type_name; |
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/******************************************************/ |
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/* Extensions to the base standard as defined in */ |
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/* "Safety Software Technical Specification, */ |
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/* Part 1: Concepts and Function Blocks, */ |
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/* Version 1.0 – Official Release" */ |
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/* by PLCopen - Technical Committee 5 - 2006-01-31 */ |
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/******************************************************/ |
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static safebool_type_name_c safebool_type_name; |
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public: |
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symbol_c *get_type(symbol_c *constant) { |
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return (symbol_c *)constant->accept(*this); |
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} |
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public: |
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/*********************/ |
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/* B 1.2 - Constants */ |
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/*********************/ |
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/******************************/ |
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/* B 1.2.1 - Numeric Literals */ |
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/******************************/ |
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void *visit(real_c *symbol) {return (void *)&constant_real_type_name;} |
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void *visit(integer_c *symbol) {return (void *)&constant_int_type_name;} |
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void *visit(binary_integer_c *symbol) {return (void *)&constant_int_type_name;} |
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void *visit(octal_integer_c *symbol) {return (void *)&constant_int_type_name;} |
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void *visit(hex_integer_c *symbol) {return (void *)&constant_int_type_name;} |
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void *visit(numeric_literal_c *symbol) |
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{return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} |
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void *visit(integer_literal_c *symbol) |
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{return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} |
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void *visit(real_literal_c *symbol) |
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{return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} |
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void *visit(bit_string_literal_c *symbol) |
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{return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} |
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void *visit(boolean_literal_c *symbol) |
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{return (void *)((symbol->type!=NULL)?symbol->type:symbol->value->accept(*this));} |
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/*******************************/ |
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/* B.1.2.2 Character Strings */ |
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/*******************************/ |
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void *visit(double_byte_character_string_c *symbol) {return (void *)&wstring_type_name;} |
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void *visit(single_byte_character_string_c *symbol) {return (void *)&string_type_name;} |
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/***************************/ |
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/* B 1.2.3 - Time Literals */ |
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/***************************/ |
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/************************/ |
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/* B 1.2.3.1 - Duration */ |
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/************************/ |
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void *visit(neg_time_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(duration_c *symbol) {return (void *)&time_type_name;} |
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void *visit(fixed_point_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(days_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(hours_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(minutes_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(seconds_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(milliseconds_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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/************************************/ |
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/* B 1.2.3.2 - Time of day and Date */ |
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/************************************/ |
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void *visit(time_of_day_c *symbol) {return (void *)&tod_type_name;} |
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void *visit(daytime_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(date_c *symbol) {return (void *)&date_type_name;} |
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void *visit(date_literal_c *symbol) {ERROR; return NULL;} /* this member function should never be called. */ |
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void *visit(date_and_time_c *symbol) {return (void *)&dt_type_name;} |
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}; |
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real_type_name_c search_constant_type_c::real_type_name; |
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sint_type_name_c search_constant_type_c::sint_type_name; |
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lint_type_name_c search_constant_type_c::lint_type_name; |
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dint_type_name_c search_constant_type_c::dint_type_name; |
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date_type_name_c search_constant_type_c::date_type_name; |
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dword_type_name_c search_constant_type_c::dword_type_name; |
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dt_type_name_c search_constant_type_c::dt_type_name; |
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tod_type_name_c search_constant_type_c::tod_type_name; |
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udint_type_name_c search_constant_type_c::udint_type_name; |
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word_type_name_c search_constant_type_c::word_type_name; |
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wstring_type_name_c search_constant_type_c::wstring_type_name; |
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string_type_name_c search_constant_type_c::string_type_name; |
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lword_type_name_c search_constant_type_c::lword_type_name; |
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uint_type_name_c search_constant_type_c::uint_type_name; |
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lreal_type_name_c search_constant_type_c::lreal_type_name; |
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byte_type_name_c search_constant_type_c::byte_type_name; |
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usint_type_name_c search_constant_type_c::usint_type_name; |
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ulint_type_name_c search_constant_type_c::ulint_type_name; |
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bool_type_name_c search_constant_type_c::bool_type_name; |
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time_type_name_c search_constant_type_c::time_type_name; |
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int_type_name_c search_constant_type_c::int_type_name; |
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constant_real_type_name_c search_constant_type_c::constant_real_type_name; |
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constant_int_type_name_c search_constant_type_c::constant_int_type_name; |
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direct_variable_type_name_c search_constant_type_c::direct_variable_type_name; |
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