author | Mario de Sousa <msousa@fe.up.pt> |
Sun, 10 Jun 2012 21:47:15 +0100 | |
changeset 576 | 8368ec909825 |
parent 564 | dabffc3086dc |
child 611 | 8e81d7db54be |
permissions | -rwxr-xr-x |
204 | 1 |
/* |
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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) 2007-2011 Laurent Bessard and Edouard Tisserant |
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* Copyright (C) 2012 Manuele Conti (manuele.conti@sirius-es.it) |
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* Copyright (C) 2012 Matteo Facchinetti (matteo.facchinetti@sirius-es.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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* 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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#include "stage3.hh" |
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#include "flow_control_analysis.hh" |
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#include "fill_candidate_datatypes.hh" |
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#include "narrow_candidate_datatypes.hh" |
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#include "print_datatypes_error.hh" |
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#include "lvalue_check.hh" |
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#include "array_range_check.hh" |
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#include "constant_folding.hh" |
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static int constant_check(symbol_c *tree_root){ |
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constant_folding_c constant_folding(tree_root); |
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tree_root->accept(constant_folding); |
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return constant_folding.get_error_count(); |
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} |
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static int flow_control_analysis(symbol_c *tree_root){ |
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flow_control_analysis_c flow_control_analysis(tree_root); |
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tree_root->accept(flow_control_analysis); |
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return 0; |
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} |
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/* Type safety analysis assumes that flow control analysis has already been completed, |
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* so be sure to call flow_control_analysis() before calling this function |
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*/ |
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static int type_safety(symbol_c *tree_root){ |
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fill_candidate_datatypes_c fill_candidate_datatypes(tree_root); |
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tree_root->accept(fill_candidate_datatypes); |
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narrow_candidate_datatypes_c narrow_candidate_datatypes(tree_root); |
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tree_root->accept(narrow_candidate_datatypes); |
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print_datatypes_error_c print_datatypes_error(tree_root); |
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tree_root->accept(print_datatypes_error); |
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return print_datatypes_error.get_error_count(); |
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} |
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/* Left value checking assumes that datat type analysis has already been completed, |
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* so be sure to call type_safety() before calling this function |
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*/ |
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static int lvalue_check(symbol_c *tree_root){ |
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lvalue_check_c lvalue_check(tree_root); |
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tree_root->accept(lvalue_check); |
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return lvalue_check.get_error_count(); |
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} |
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static int range_check(symbol_c *tree_root){ |
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array_range_check_c array_range_check(tree_root); |
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tree_root->accept(array_range_check); |
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return array_range_check.get_error_count(); |
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} |
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int stage3(symbol_c *tree_root){ |
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int error_count = 0; |
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error_count += constant_check(tree_root); |
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error_count += flow_control_analysis(tree_root); |
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error_count += type_safety(tree_root); |
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error_count += lvalue_check(tree_root); |
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error_count += range_check(tree_root); |
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if (error_count > 0) { |
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fprintf(stderr, "%d error(s) found. Bailing out!\n", error_count); |
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return -1; |
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} |
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return 0; |
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} |