--- a/absyntax_utils/search_expression_type.hh	Thu Oct 04 18:50:21 2012 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,142 +0,0 @@
-/*
- *  matiec - a compiler for the programming languages defined in IEC 61131-3
- *
- *  Copyright (C) 2003-2011  Mario de Sousa (msousa@fe.up.pt)
- *  Copyright (C) 2007-2011  Laurent Bessard and Edouard Tisserant
- *
- *  This program is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 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.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *
- * 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 compiler.
- *
- * Based on the
- * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
- *
- */
-
-/* Determine the data type of an ST expression.
- * A reference to the relevant type definition is returned.
- *
- * For example:
- *       2 + 3       -> returns reference to a int_type_name_c object.
- *       22.2 - 5    -> returns reference to a real_type_name_c object.
- *       etc...
- */
-
-/* WARNING   WARNING  WARNING
- *
- * When taking into consideration calls to functions, this search_expression_type_c
- * class will use internal atributes (i.e. anotation) in the function_invocation_c symbol 
- * in the abstract syntax tree.
- *
- * Since this anotation/atribute is only set/populated with the correct value
- * during stage3 (semantic verification), this class will only work correctly
- * after the semantic verification in stage 3 has been executed
- * (to be more exact, the data type checking of stage 3).
- */
-
-class search_expression_type_c: public search_constant_type_c {
-
-  private:
-    search_varfb_instance_type_c *search_varfb_instance_type;
-    search_base_type_c search_base_type;
-
-
-  public:
-    search_expression_type_c(symbol_c *search_scope);
-    virtual ~search_expression_type_c(void);
-
-    /* A helper function... */
-    bool is_bool_type(symbol_c *type_symbol);
-    bool is_time_type(symbol_c *type_symbol);
-    bool is_string_type(symbol_c *type_symbol);
-    bool is_literal_integer_type(symbol_c *type_symbol);
-    bool is_integer_type(symbol_c *type_symbol);
-    bool is_literal_real_type(symbol_c *type_symbol);
-    bool is_real_type(symbol_c *type_symbol);
-    bool is_num_type(symbol_c *type_symbol);
-    bool is_nbinary_type(symbol_c *type_symbol);
-    bool is_binary_type(symbol_c *type_symbol);
-
-    bool is_same_type(symbol_c *first_type, symbol_c *second_type);
-    symbol_c* common_type(symbol_c *first_type, symbol_c *second_type);
-    symbol_c* default_literal_type(symbol_c *symbol);
-
-    /*static bool_type_name_c bool_type_name;*/
-
-    /* A helper function... */
-    void *compute_boolean_expression(symbol_c *left_type, symbol_c *right_type);
-
-    /* A helper function... */
-    void *compute_numeric_expression(symbol_c *left_type, symbol_c *right_type);
-
-    /* a helper function... */
-    symbol_c *base_type(symbol_c *symbol);
-
-    /*********************/
-    /* B 1.4 - Variables */
-    /*********************/
-    
-    void *visit(symbolic_variable_c *symbol);
-
-    /********************************************/
-    /* B 1.4.1 - Directly Represented Variables */
-    /********************************************/
-    void *visit(direct_variable_c *symbol);
-
-    /*************************************/
-    /* B 1.4.2 - Multi-element variables */
-    /*************************************/
- 
-    void *visit(array_variable_c *symbol);
-    void *visit(structured_variable_c *symbol);
-
-    /***************************************/
-    /* B.3 - Language ST (Structured Text) */
-    /***************************************/
-    /***********************/
-    /* B 3.1 - Expressions */
-    /***********************/
-    void *visit(or_expression_c *symbol);
-    void *visit(xor_expression_c *symbol);
-    void *visit(and_expression_c *symbol);
-    void *visit(equ_expression_c *symbol);
-    void *visit(notequ_expression_c *symbol);
-    void *visit(lt_expression_c *symbol);
-    void *visit(gt_expression_c *symbol);
-    void *visit(le_expression_c *symbol);
-    void *visit(ge_expression_c *symbol);
-    
-    void *visit(add_expression_c *symbol);
-    void *visit(sub_expression_c *symbol);
-    void *visit(mul_expression_c *symbol);
-    void *visit(div_expression_c *symbol);
-    void *visit(mod_expression_c *symbol);
-    void *visit(power_expression_c *symbol);
-    void *visit(neg_expression_c *symbol);
-    void *visit(not_expression_c *symbol);
-    void *visit(function_invocation_c *symbol);
-
-
-    static integer_c integer;
-
-}; // search_expression_type_c
-
-
-