author | mjsousa |
Wed, 10 Dec 2014 12:06:45 +0000 | |
changeset 962 | 98e7a0d3af21 |
parent 958 | 7474d2cd1d6e |
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/* |
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* matiec - a compiler for the programming languages defined in IEC 61131-3 |
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* |
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* Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt) |
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* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* |
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* This code is made available on the understanding that it will not be |
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* used in safety-critical situations without a full and competent review. |
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*/ |
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/* |
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* An IEC 61131-3 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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/* |
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* Separation of type specification and default value constructs |
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* (for e.g. simple_spec_init_c), into a type specificiation part, |
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* and a default value part. |
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*/ |
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#include "../absyntax/absyntax.hh" |
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#include "../absyntax/visitor.hh" |
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class spec_init_sperator_c: public null_visitor_c { |
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private: |
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/* this is a singleton class... */ |
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static spec_init_sperator_c *class_instance; |
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static spec_init_sperator_c *get_class_instance(void); |
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private: |
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typedef enum {search_spec, search_init} search_what_t; |
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static search_what_t search_what; |
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public: |
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/* the only two public functions... */ |
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static symbol_c *get_spec(symbol_c *spec_init); |
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static symbol_c *get_init(symbol_c *spec_init); |
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private: |
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/*******************************************/ |
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/* B 1.1 - Letters, digits and identifiers */ |
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/*******************************************/ |
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// SYM_TOKEN(identifier_c) |
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void *visit( identifier_c *symbol); |
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void *visit(derived_datatype_identifier_c *symbol); |
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void *visit( poutype_identifier_c *symbol); |
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/********************************/ |
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/* B 1.3.3 - Derived data types */ |
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/********************************/ |
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/* simple_specification ASSIGN constant */ |
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void *visit(simple_spec_init_c *symbol); |
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/* subrange_specification ASSIGN signed_integer */ |
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void *visit(subrange_spec_init_c *symbol); |
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/* integer_type_name '(' subrange')' */ |
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void *visit(subrange_specification_c *symbol); |
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/* array_specification [ASSIGN array_initialization} */ |
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/* array_initialization may be NULL ! */ |
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void *visit(array_spec_init_c *symbol); |
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/* ARRAY '[' array_subrange_list ']' OF non_generic_type_name */ |
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void *visit(array_specification_c *symbol); |
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/* enumerated_specification ASSIGN enumerated_value */ |
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void *visit(enumerated_spec_init_c *symbol); |
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/* structure_type_name ASSIGN structure_initialization */ |
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/* structure_initialization may be NULL ! */ |
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//SYM_REF2(initialized_structure_c, structure_type_name, structure_initialization) |
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void *visit(initialized_structure_c *symbol); |
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/* function_block_type_name ASSIGN structure_initialization */ |
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/* structure_initialization -> may be NULL ! */ |
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//SYM_REF2(fb_spec_init_c, function_block_type_name, structure_initialization) |
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void *visit(fb_spec_init_c *symbol); |
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/* REF_TO (non_generic_type_name | function_block_type_name) */ |
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// SYM_REF1(ref_spec_c, type_name) |
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void *visit(ref_spec_c *symbol); |
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/* ref_spec [ ASSIGN ref_initialization ] */ |
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/* NOTE: ref_initialization may be NULL!! */ |
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// SYM_REF2(ref_spec_init_c, ref_spec, ref_initialization) |
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void *visit(ref_spec_init_c *symbol); |
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/******************************************/ |
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/* B 1.4.3 - Declaration & Initialisation */ |
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/******************************************/ |
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/* STRING '[' integer ']' |
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* STRING ASSIGN single_byte_character_string |
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* STRING '[' integer ']' ASSIGN single_byte_character_string |
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*/ |
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void *visit(single_byte_string_spec_c *symbol); |
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/* WSTRING '[' integer ']' |
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* WSTRING ASSIGN double_byte_character_string |
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* WSTRING '[' integer ']' ASSIGN double_byte_character_string |
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*/ |
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void *visit(double_byte_string_spec_c *symbol); |
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}; /* class spec_init_sperator_c */ |