langviz/Iterator.cc

   1 /******************************************************************************
   2  * Copyright (c) 2000-2016 Ericsson Telecom AB
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *   Balasko, Jeno
  10  *   Forstner, Matyas
  11  *
  12  ******************************************************************************/
  13 #include "Iterator.hh"
  14 #include "Grammar.hh"
  15 #include "Rule.hh"
  16 #include "Symbol.hh"
  17
  18 // =================================
  19 // ===== Iterator
  20 // =================================
  21
  22 void Iterator::visitGrammar(Grammar *p_grammar)
  23 {
  24   grammar=p_grammar;
  25   actionGrammar();
  26   size_t n=grammar->get_nof_groupings();
  27   for(size_t i=0; i<n; i++)
  28     visitGrouping(grammar->get_grouping_byIndex(i));
  29 }
  30
  31 void Iterator::visitGrouping(Grouping *p_grouping)
  32 {
  33   grouping=p_grouping;
  34   lhs=p_grouping->get_lhs();
  35   actionGrouping();
  36   size_t n=grouping->get_nof_rules();
  37   for(size_t i=0; i<n; i++)
  38     visitRule(grouping->get_rule_byIndex(i));
  39 }
  40
  41 void Iterator::visitRule(Rule *p_rule)
  42 {
  43   rule=p_rule;
  44   actionRule();
  45   size_t n=rule->get_nof_ss();
  46   for(size_t i=0; i<n; i++)
  47     visitSymbol(rule->get_s_byIndex(i));
  48 }
  49
  50 void Iterator::visitSymbol(Symbol *p_symbol)
  51 {
  52   symbol=p_symbol;
  53   actionSymbol();
  54 }
  55
  56 // =================================
  57 // ===== ItRefBuild
  58 // =================================
  59
  60 void ItRefBuild::actionSymbol()
  61 {
  62   if(symbol==lhs)
  63     symbol->set_is_recursive();
  64   else {
  65     symbol->add_refd_by(lhs);
  66     lhs->add_refs(symbol);
  67   }
  68 }