Package org.eclipse.persistence.internal.libraries.antlr.runtime.tree

Examples of org.eclipse.persistence.internal.libraries.antlr.runtime.tree.ParseTree

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  Stack callStack = new Stack();
  List hiddenTokens = new ArrayList();
  int backtracking = 0;

  public ParseTreeBuilder(String grammarName) {
    ParseTree root = create("<grammar "+grammarName+">");
    callStack.push(root);
  }
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  /**  What kind of node to create.  You might want to override
   *   so I factored out creation here.
   */
  public ParseTree create(Object payload) {
    return new ParseTree(payload);
  }
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  public void enterDecision(int d) { backtracking++; }
  public void exitDecision(int i) { backtracking--; }

  public void enterRule(String filename, String ruleName) {
    if ( backtracking>0 ) return;
    ParseTree parentRuleNode = (ParseTree)callStack.peek();
    ParseTree ruleNode = create(ruleName);
    parentRuleNode.addChild(ruleNode);
    callStack.push(ruleNode);
  }
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    callStack.push(ruleNode);
  }

  public void exitRule(String filename, String ruleName) {
    if ( backtracking>0 ) return;
    ParseTree ruleNode = (ParseTree)callStack.peek();
    if ( ruleNode.getChildCount()==0 ) {
      ruleNode.addChild(epsilonNode());
    }
    callStack.pop();   
  }
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    callStack.pop();   
  }

  public void consumeToken(Token token) {
    if ( backtracking>0 ) return;
    ParseTree ruleNode = (ParseTree)callStack.peek();
    ParseTree elementNode = create(token);
    elementNode.hiddenTokens = this.hiddenTokens;
    this.hiddenTokens = new ArrayList();
    ruleNode.addChild(elementNode);
  }
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    hiddenTokens.add(token);
  }

  public void recognitionException(RecognitionException e) {
    if ( backtracking>0 ) return;
    ParseTree ruleNode = (ParseTree)callStack.peek();
    ParseTree errorNode = create(e);
    ruleNode.addChild(errorNode);
  }
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Related Classes of org.eclipse.persistence.internal.libraries.antlr.runtime.tree.ParseTree

  • org.eclipse.persistence.internal.libraries.antlr.runtime.debug.ParseTreeBuilder
  • org.eclipse.persistence.internal.libraries.antlr.runtime.Token
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