author | Mario de Sousa <msousa@fe.up.pt> |
Wed, 25 Apr 2012 16:45:00 +0100 | |
changeset 535 | 70140bd7fe67 |
parent 417 | d48f53715f77 |
child 680 | df783da3ebe2 |
permissions | -rwxr-xr-x |
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/* |
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* matiec - a compiler for the programming languages defined in IEC 61131-3 |
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* Copyright (C) 2003-2011 Mario de Sousa (msousa@fe.up.pt) |
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* Copyright (C) 2007-2011 Laurent Bessard and Edouard Tisserant |
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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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* VISITOR.CC |
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* |
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* Three base implementations of the visitor interface, |
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* that may be later extended to execute a particular algorithm. |
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* |
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* The null (class null_visitor_c) does nothing. |
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* |
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* The iterator (class iterator_visitor_c) iterates through |
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* every object in the syntax tree. |
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* |
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* The search class (class search_visitor_c) iterates through |
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* every object, until one returns a value != NULL. |
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*/ |
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#include <unistd.h> |
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#include <stdio.h> /* required for NULL */ |
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#include "visitor.hh" |
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#include <iostream> |
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/******************/ |
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/* visitor_c */ |
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/******************/ |
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visitor_c::~visitor_c(void) {return;} |
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/******************/ |
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/* null_visitor_c */ |
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/******************/ |
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null_visitor_c::~null_visitor_c(void) {return;} |
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#define SYM_LIST(class_name_c) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_TOKEN(class_name_c, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF0(class_name_c, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF1(class_name_c, ref1, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF2(class_name_c, ref1, ref2, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF3(class_name_c, ref1, ref2, ref3, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF5(class_name_c, ref1, ref2, ref3, ref4, ref5, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6, ...) \ |
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void *null_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#include "absyntax.def" |
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#undef SYM_LIST |
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#undef SYM_TOKEN |
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#undef SYM_REF0 |
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#undef SYM_REF1 |
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#undef SYM_REF2 |
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#undef SYM_REF3 |
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#undef SYM_REF4 |
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#undef SYM_REF5 |
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#undef SYM_REF6 |
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/**********************/ |
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/* iterator_visitor_c */ |
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/**********************/ |
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iterator_visitor_c::~iterator_visitor_c(void) {return;} |
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void *iterator_visitor_c::visit_list(list_c *list) { |
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for(int i = 0; i < list->n; i++) { |
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list->elements[i]->accept(*this); |
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} |
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return NULL; |
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} |
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#define SYM_LIST(class_name_c) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) {return visit_list(symbol);} |
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#define SYM_TOKEN(class_name_c, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF0(class_name_c, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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#define SYM_REF1(class_name_c, ref1, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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return NULL; \ |
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} |
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#define SYM_REF2(class_name_c, ref1, ref2, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1!=NULL) symbol->ref1->accept(*this); \ |
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if (symbol->ref2!=NULL) symbol->ref2->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF3(class_name_c, ref1, ref2, ref3, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1) symbol->ref1->accept(*this); \ |
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if (symbol->ref2) symbol->ref2->accept(*this); \ |
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if (symbol->ref3) symbol->ref3->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1) symbol->ref1->accept(*this); \ |
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if (symbol->ref2) symbol->ref2->accept(*this); \ |
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if (symbol->ref3) symbol->ref3->accept(*this); \ |
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if (symbol->ref4) symbol->ref4->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF5(class_name_c, ref1, ref2, ref3, ref4, ref5, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1) symbol->ref1->accept(*this); \ |
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if (symbol->ref2) symbol->ref2->accept(*this); \ |
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if (symbol->ref3) symbol->ref3->accept(*this); \ |
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if (symbol->ref4) symbol->ref4->accept(*this); \ |
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if (symbol->ref5) symbol->ref5->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6, ...) \ |
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void *iterator_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1) symbol->ref1->accept(*this); \ |
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if (symbol->ref2) symbol->ref2->accept(*this); \ |
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if (symbol->ref3) symbol->ref3->accept(*this); \ |
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if (symbol->ref4) symbol->ref4->accept(*this); \ |
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if (symbol->ref5) symbol->ref5->accept(*this); \ |
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if (symbol->ref6) symbol->ref6->accept(*this); \ |
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return NULL; \ |
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} |
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#include "absyntax.def" |
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#undef SYM_LIST |
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#undef SYM_TOKEN |
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#undef SYM_REF0 |
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#undef SYM_REF1 |
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#undef SYM_REF2 |
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#undef SYM_REF3 |
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#undef SYM_REF4 |
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#undef SYM_REF5 |
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#undef SYM_REF6 |
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/********************/ |
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/* search_visitor_c */ |
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/********************/ |
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search_visitor_c::~search_visitor_c(void) {return;} |
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void *search_visitor_c::visit_list(list_c *list) { |
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for(int i = 0; i < list->n; i++) { |
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void *res = list->elements[i]->accept(*this); |
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if (res != NULL) |
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return res; |
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} |
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return NULL; |
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} |
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#define SYM_LIST(class_name_c) \ |
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void *search_visitor_c::visit(class_name_c *symbol) {return visit_list(symbol);} |
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#define SYM_TOKEN(class_name_c, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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Re-write of stage3 code (done by Manuele and I), re-write of search_varfb_instance_type_c (done by myself), and several other bug fixes.
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#define SYM_REF0(class_name_c, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) {return NULL;} |
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Re-write of stage3 code (done by Manuele and I), re-write of search_varfb_instance_type_c (done by myself), and several other bug fixes.
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#define SYM_REF1(class_name_c, ref1, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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if (symbol->ref1) return symbol->ref1->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF2(class_name_c, ref1, ref2, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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void *res = NULL; \ |
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if (symbol->ref1) res = symbol->ref1->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref2) return symbol->ref2->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF3(class_name_c, ref1, ref2, ref3, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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void *res = NULL; \ |
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if (symbol->ref1) res = symbol->ref1->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref2) res = symbol->ref2->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref3) return symbol->ref3->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF4(class_name_c, ref1, ref2, ref3, ref4, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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void *res = NULL; \ |
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if (symbol->ref1) res = symbol->ref1->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref2) res = symbol->ref2->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref3) res = symbol->ref3->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref4) return symbol->ref4->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF5(class_name_c, ref1, ref2, ref3, ref4, ref5, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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void *res = NULL; \ |
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if (symbol->ref1) res = symbol->ref1->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref2) res = symbol->ref2->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref3) res = symbol->ref3->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref4) res = symbol->ref4->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref5) return symbol->ref5->accept(*this); \ |
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return NULL; \ |
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} |
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#define SYM_REF6(class_name_c, ref1, ref2, ref3, ref4, ref5, ref6, ...) \ |
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void *search_visitor_c::visit(class_name_c *symbol) { \ |
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void *res = NULL; \ |
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if (symbol->ref1) res = symbol->ref1->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref2) res = symbol->ref2->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref3) res = symbol->ref3->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref4) res = symbol->ref4->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref5) res = symbol->ref5->accept(*this); \ |
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if (res != NULL) return res; \ |
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if (symbol->ref6) return symbol->ref6->accept(*this); \ |
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return NULL; \ |
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} |
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#include "absyntax.def" |
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#undef SYM_LIST |
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#undef SYM_TOKEN |
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#undef SYM_REF0 |
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#undef SYM_REF1 |
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#undef SYM_REF2 |
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#undef SYM_REF3 |
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#undef SYM_REF4 |
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#undef SYM_REF5 |
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#undef SYM_REF6 |
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|
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