diff -r 64334c5a00b1 -r 38d6eb056260 absyntax_utils/spec_init_separator.hh --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/absyntax_utils/spec_init_separator.hh Mon Jun 01 21:08:44 2009 +0200 @@ -0,0 +1,96 @@ +/* + * (c) 2003 Mario de Sousa + * + * Offered to the public under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 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. + * + * 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 IL and ST compiler. + * + * Based on the + * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) + * + */ + + +/* + * Separation of type specification and default value constructs + * (for e.g. simple_spec_init_c), into a type specificiation part, + * and a default value part. + */ + +#include "../absyntax/absyntax.hh" +#include "../absyntax/visitor.hh" + +class spec_init_sperator_c: public null_visitor_c { + + private: + /* this is a singleton class... */ + static spec_init_sperator_c *class_instance; + static spec_init_sperator_c *get_class_instance(void); + + private: + typedef enum {search_spec, search_init} search_what_t; + static search_what_t search_what; + + public: + /* the only two public functions... */ + static symbol_c *get_spec(symbol_c *spec_init); + + static symbol_c *get_init(symbol_c *spec_init); + + + private: + + + /*******************************************/ + /* B 1.1 - Letters, digits and identifiers */ + /*******************************************/ + // SYM_TOKEN(identifier_c) + void *visit(identifier_c *symbol); + + + /********************************/ + /* B 1.3.3 - Derived data types */ + /********************************/ + + /* simple_specification ASSIGN constant */ + void *visit(simple_spec_init_c *symbol); + + /* subrange_specification ASSIGN signed_integer */ + void *visit(subrange_spec_init_c *symbol); + + /* integer_type_name '(' subrange')' */ + void *visit(subrange_specification_c *symbol); + + /* array_specification [ASSIGN array_initialization} */ + /* array_initialization may be NULL ! */ + void *visit(array_spec_init_c *symbol); + + /* enumerated_specification ASSIGN enumerated_value */ + void *visit(enumerated_spec_init_c *symbol); + + /* structure_type_name ASSIGN structure_initialization */ + /* structure_initialization may be NULL ! */ + //SYM_REF2(initialized_structure_c, structure_type_name, structure_initialization) + void *visit(initialized_structure_c *symbol); + + + /******************************************/ + /* B 1.4.3 - Declaration & Initialisation */ + /******************************************/ + + /* fb_name_list ':' function_block_type_name ASSIGN structure_initialization */ + /* structure_initialization -> may be NULL ! */ + void *visit(fb_name_decl_c *symbol); +}; /* class spec_init_sperator_c */