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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) 2012  Mario de Sousa (msousa@fe.up.pt)

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 *

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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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 *  Search for a specific label in an IL list. 

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 *

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 *  when instantiated, must be given a pointer to one of the following

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 *     - function_declaration_c

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 *     - function_block_declaration_c

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 *     - program_declaration_c

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 *     - instruction_list_c

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 *

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 * which is where all calls to search for a specific label will look for said label.

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 */

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#include "../absyntax_utils/absyntax_utils.hh"

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class search_il_label_c: public search_visitor_c {

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  private:

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    search_varfb_instance_type_c *search_varfb_instance_type;

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    symbol_c *search_scope;

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    symbol_c *search_label;

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  public:

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    search_il_label_c(symbol_c *search_scope);

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    virtual ~search_il_label_c(void);

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    il_instruction_c *find_label(const char *label);

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    il_instruction_c *find_label(symbol_c   *label);

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    /****************************************/

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    /* B.2 - Language IL (Instruction List) */

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    /****************************************/

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    /***********************************/

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    /* B 2.1 Instructions and Operands */

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    /***********************************/

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//     void *visit(instruction_list_c *symbol);

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    void *visit(il_instruction_c *symbol);

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//     void *visit(il_simple_operation_c *symbol);

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//     void *visit(il_function_call_c *symbol);

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//     void *visit(il_expression_c *symbol);

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//     void *visit(il_fb_call_c *symbol);

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//     void *visit(il_formal_funct_call_c *symbol);

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//     void *visit(il_operand_list_c *symbol);

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//     void *visit(simple_instr_list_c *symbol);

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//     void *visit(il_simple_instruction_c*symbol);

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//     void *visit(il_param_list_c *symbol);

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//     void *visit(il_param_assignment_c *symbol);

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//     void *visit(il_param_out_assignment_c *symbol);

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}; // search_il_label_c

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