langviz/Iterator.cc

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Copyright (c) 2000-2014 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 #include "Iterator.hh"
   9 #include "Grammar.hh"
  10 #include "Rule.hh"
  11 #include "Symbol.hh"
  12
  13 // =================================
  14 // ===== Iterator
  15 // =================================
  16
  17 void Iterator::visitGrammar(Grammar *p_grammar)
  18 {
  19   grammar=p_grammar;
  20   actionGrammar();
  21   size_t n=grammar->get_nof_groupings();
  22   for(size_t i=0; i<n; i++)
  23     visitGrouping(grammar->get_grouping_byIndex(i));
  24 }
  25
  26 void Iterator::visitGrouping(Grouping *p_grouping)
  27 {
  28   grouping=p_grouping;
  29   lhs=p_grouping->get_lhs();
  30   actionGrouping();
  31   size_t n=grouping->get_nof_rules();
  32   for(size_t i=0; i<n; i++)
  33     visitRule(grouping->get_rule_byIndex(i));
  34 }
  35
  36 void Iterator::visitRule(Rule *p_rule)
  37 {
  38   rule=p_rule;
  39   actionRule();
  40   size_t n=rule->get_nof_ss();
  41   for(size_t i=0; i<n; i++)
  42     visitSymbol(rule->get_s_byIndex(i));
  43 }
  44
  45 void Iterator::visitSymbol(Symbol *p_symbol)
  46 {
  47   symbol=p_symbol;
  48   actionSymbol();
  49 }
  50
  51 // =================================
  52 // ===== ItRefBuild
  53 // =================================
  54
  55 void ItRefBuild::actionSymbol()
  56 {
  57   if(symbol==lhs)
  58     symbol->set_is_recursive();
  59   else {
  60     symbol->add_refd_by(lhs);
  61     lhs->add_refs(symbol);
  62   }
  63 }