author | Mario de Sousa <msousa@fe.up.pt> |
Tue, 12 Jun 2012 17:12:09 +0100 | |
changeset 585 | be7330d9b65c |
parent 568 | 5f79478142d7 |
child 612 | c062ff18d04f |
permissions | -rw-r--r-- |
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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) 2009-2012 Mario de Sousa (msousa@fe.up.pt) |
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* Copyright (C) 2012 Manuele Conti (conti.ma@alice.it) |
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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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/* |
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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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/* Determine the data type of an constant expression. |
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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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* 2 + 3 -> returns reference |
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* 22.2 - 5 -> returns reference |
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* etc... |
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*/ |
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|
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#include <vector> |
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#include "../absyntax_utils/absyntax_utils.hh" |
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|
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|
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class constant_folding_c : public iterator_visitor_c { |
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search_varfb_instance_type_c *search_varfb_instance_type; |
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search_base_type_c search_base_type; |
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int error_count; |
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bool warning_found; |
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int current_display_error_level; |
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|
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public: |
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constant_folding_c(symbol_c *symbol = NULL); |
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virtual ~constant_folding_c(void); |
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int get_error_count(); |
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|
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private: |
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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); |
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void *visit(integer_c *symbol); |
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void *visit(neg_real_c *symbol); |
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void *visit(neg_integer_c *symbol); |
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void *visit(binary_integer_c *symbol); |
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void *visit(octal_integer_c *symbol); |
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void *visit(hex_integer_c *symbol); |
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void *visit(integer_literal_c *symbol); |
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void *visit(real_literal_c *symbol); |
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void *visit(bit_string_literal_c *symbol); |
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void *visit(boolean_literal_c *symbol); |
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void *visit(boolean_true_c *symbol); |
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void *visit(boolean_false_c *symbol); |
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|
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/***************************************/ |
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/* B.3 - Language ST (Structured Text) */ |
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/***************************************/ |
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/***********************/ |
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/* B 3.1 - Expressions */ |
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/***********************/ |
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void *visit(or_expression_c *symbol); |
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void *visit(xor_expression_c *symbol); |
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void *visit(and_expression_c *symbol); |
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void *visit(equ_expression_c *symbol); |
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void *visit(notequ_expression_c *symbol); |
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void *visit(lt_expression_c *symbol); |
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void *visit(gt_expression_c *symbol); |
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void *visit(le_expression_c *symbol); |
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void *visit(ge_expression_c *symbol); |
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void *visit(add_expression_c *symbol); |
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void *visit(sub_expression_c *symbol); |
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void *visit(mul_expression_c *symbol); |
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void *visit(div_expression_c *symbol); |
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void *visit(mod_expression_c *symbol); |
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void *visit(power_expression_c *symbol); |
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void *visit(neg_expression_c *symbol); |
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void *visit(not_expression_c *symbol); |
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}; |
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