ParserEventSupport.cs :  » Inversion-of-Control-Dependency-Injection » Spring.net » Spring » Expressions » Parser » antlr » debug » C# / CSharp Open Source

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C# / CSharp Open Source » Inversion of Control Dependency Injection » Spring.net 
Spring.net » Spring » Expressions » Parser » antlr » debug » ParserEventSupport.cs
namespace Spring.Expressions.Parser.antlr.debug{
  using System;
  using System.Reflection;
  using Hashtable      = System.Collections.Hashtable;
  using DictionaryEntry  = System.Collections.DictionaryEntry;
  using ArrayList      = System.Collections.ArrayList;

  using antlr.collections.impl;
  
  
  public delegate void MessageEventHandler(object sender, MessageEventArgs e); 
  public delegate void NewLineEventHandler(object sender, NewLineEventArgs e); 
  public delegate void MatchEventHandler(object sender, MatchEventArgs e); 
  public delegate void TokenEventHandler(object sender, TokenEventArgs e); 
  public delegate void SemanticPredicateEventHandler(object sender, SemanticPredicateEventArgs e); 
  public delegate void SyntacticPredicateEventHandler(object sender, SyntacticPredicateEventArgs e); 
  public delegate void TraceEventHandler(object sender, TraceEventArgs e); 

  /// <summary>A class to assist in firing parser events
  /// NOTE: I intentionally _did_not_ synchronize the event firing and
  /// add/remove listener methods.  This is because the add/remove should
  /// _only_ be called by the parser at its start/end, and the _same_thread_
  /// should be performing the parsing.  This should help performance a tad...
  /// </summary>
  public class ParserEventSupport
  {
    private object source;
    private Hashtable listeners;

    private MatchEventArgs matchEvent;
    private MessageEventArgs messageEvent;
    private TokenEventArgs tokenEvent;
    private SemanticPredicateEventArgs semPredEvent;
    private SyntacticPredicateEventArgs synPredEvent;
    private TraceEventArgs traceEvent;
    private NewLineEventArgs newLineEvent;

    private ParserController controller;

    private int ruleDepth = 0;
    
    
    public ParserEventSupport(object source)
    {
      matchEvent    = new MatchEventArgs();
      messageEvent  = new MessageEventArgs();
      tokenEvent    = new TokenEventArgs();
      traceEvent    = new TraceEventArgs();
      semPredEvent  = new SemanticPredicateEventArgs();
      synPredEvent  = new SyntacticPredicateEventArgs();
      newLineEvent  = new NewLineEventArgs();
      listeners    = new Hashtable();
      this.source    = source;
    }

    public virtual void checkController()
    {
      if (controller != null)
        controller.checkBreak();
    }

    public virtual void  addDoneListener(Listener l)
    {
      ((Parser)source).Done += new TraceEventHandler(l.doneParsing);
      listeners[l] = l;
    }
    public virtual void  addMessageListener(MessageListener l)
    {
      ((Parser)source).ErrorReported   += new MessageEventHandler(l.reportError);
      ((Parser)source).WarningReported += new MessageEventHandler(l.reportWarning);
      //messageListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  addParserListener(ParserListener l)
    {
      if (l is ParserController)
      {
        ((ParserController) l).ParserEventSupport = this;
        controller = (ParserController) l;
      }
      addParserMatchListener(l);
      addParserTokenListener(l);
      
      addMessageListener(l);
      addTraceListener(l);
      addSemanticPredicateListener(l);
      addSyntacticPredicateListener(l);
    }
    public virtual void  addParserMatchListener(ParserMatchListener l)
    {
      ((Parser)source).MatchedToken    += new MatchEventHandler(l.parserMatch);
      ((Parser)source).MatchedNotToken  += new MatchEventHandler(l.parserMatchNot);
      ((Parser)source).MisMatchedToken  += new MatchEventHandler(l.parserMismatch);
      ((Parser)source).MisMatchedNotToken  += new MatchEventHandler(l.parserMismatchNot);
      //matchListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  addParserTokenListener(ParserTokenListener l)
    {
      ((Parser)source).ConsumedToken  += new TokenEventHandler(l.parserConsume);
      ((Parser)source).TokenLA    += new TokenEventHandler(l.parserLA);
      //tokenListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  addSemanticPredicateListener(SemanticPredicateListener l)
    {
      ((Parser)source).SemPredEvaluated  += new SemanticPredicateEventHandler(l.semanticPredicateEvaluated);
      //semPredListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  addSyntacticPredicateListener(SyntacticPredicateListener l)
    {
      ((Parser)source).SynPredStarted    += new SyntacticPredicateEventHandler(l.syntacticPredicateStarted);
      ((Parser)source).SynPredFailed    += new SyntacticPredicateEventHandler(l.syntacticPredicateFailed);
      ((Parser)source).SynPredSucceeded  += new SyntacticPredicateEventHandler(l.syntacticPredicateSucceeded);
      //synPredListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  addTraceListener(TraceListener l)
    {
      ((Parser)source).EnterRule  += new TraceEventHandler(l.enterRule);
      ((Parser)source).ExitRule  += new TraceEventHandler(l.exitRule);
      //traceListeners.Add(l);
      addDoneListener(l);
    }
    public virtual void  fireConsume(int c)
    {
      TokenEventHandler eventDelegate = (TokenEventHandler)((Parser)source).Events[Parser.LAEventKey];
      if (eventDelegate != null) 
      {
        tokenEvent.setValues(TokenEventArgs.CONSUME, 1, c);
        eventDelegate(source, tokenEvent);
      }
      checkController();
    }
    public virtual void  fireDoneParsing()
    {
      TraceEventHandler eventDelegate = (TraceEventHandler)((Parser)source).Events[Parser.DoneEventKey];
      if (eventDelegate != null) 
      {
        traceEvent.setValues(TraceEventArgs.DONE_PARSING, 0, 0, 0);
        eventDelegate(source, traceEvent);
      }
      checkController();
    }
    public virtual void  fireEnterRule(int ruleNum, int guessing, int data)
    {
      ruleDepth++;
      TraceEventHandler eventDelegate = (TraceEventHandler)((Parser)source).Events[Parser.EnterRuleEventKey];
      if (eventDelegate != null) 
      {
        traceEvent.setValues(TraceEventArgs.ENTER, ruleNum, guessing, data);
        eventDelegate(source, traceEvent);
      }
      checkController();
    }
    public virtual void  fireExitRule(int ruleNum, int guessing, int data)
    {
      TraceEventHandler eventDelegate = (TraceEventHandler)((Parser)source).Events[Parser.ExitRuleEventKey];
      if (eventDelegate != null) 
      {
        traceEvent.setValues(TraceEventArgs.EXIT, ruleNum, guessing, data);
        eventDelegate(source, traceEvent);
      } 
      checkController();

      ruleDepth--;
      if (ruleDepth == 0)
        fireDoneParsing();

    }
    public virtual void  fireLA(int k, int la)
    {
      TokenEventHandler eventDelegate = (TokenEventHandler)((Parser)source).Events[Parser.LAEventKey];
      if (eventDelegate != null) 
      {
        tokenEvent.setValues(TokenEventArgs.LA, k, la);
        eventDelegate(source, tokenEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(char c, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR, c, c, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(char c, BitSet b, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR_BITSET, c, b, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(char c, string target, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR_RANGE, c, target, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(int c, BitSet b, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.BITSET, c, b, text, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(int n, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.TOKEN, n, n, text, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatch(string s, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.STRING, 0, s, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatchNot(char c, char n, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchNotEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR, c, n, null, guessing, true, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMatchNot(int c, int n, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MatchNotEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.TOKEN, c, n, text, guessing, true, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(char c, char n, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR, c, n, null, guessing, false, false);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(char c, BitSet b, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR_BITSET, c, b, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(char c, string target, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR_RANGE, c, target, null, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(int i, int n, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.TOKEN, i, n, text, guessing, false, false);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(int i, BitSet b, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.BITSET, i, b, text, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatch(string s, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.STRING, 0, text, s, guessing, false, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatchNot(char v, char c, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchNotEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.CHAR, v, c, null, guessing, true, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireMismatchNot(int i, int n, string text, int guessing)
    {
      MatchEventHandler eventDelegate = (MatchEventHandler)((Parser)source).Events[Parser.MisMatchNotEventKey];
      if (eventDelegate != null) 
      {
        matchEvent.setValues(MatchEventArgs.TOKEN, i, n, text, guessing, true, true);
        eventDelegate(source, matchEvent);
      }
      checkController();
    }
    public virtual void  fireReportError(System.Exception e)
    {
      MessageEventHandler eventDelegate = (MessageEventHandler)((Parser)source).Events[Parser.ReportErrorEventKey];
      if (eventDelegate != null) 
      {
        messageEvent.setValues(MessageEventArgs.ERROR, e.ToString());
        eventDelegate(source, messageEvent);
      }
      checkController();
    }
    public virtual void  fireReportError(string s)
    {
      MessageEventHandler eventDelegate = (MessageEventHandler)((Parser)source).Events[Parser.ReportErrorEventKey];
      if (eventDelegate != null) 
      {
        messageEvent.setValues(MessageEventArgs.ERROR, s);
        eventDelegate(source, messageEvent);
      }
      checkController();
    }
    public virtual void  fireReportWarning(string s)
    {
      MessageEventHandler eventDelegate = (MessageEventHandler)((Parser)source).Events[Parser.ReportWarningEventKey];
      if (eventDelegate != null) 
      {
        messageEvent.setValues(MessageEventArgs.WARNING, s);
        eventDelegate(source, messageEvent);
      }
      checkController();
    }
    public virtual bool fireSemanticPredicateEvaluated(int type, int condition, bool result, int guessing)
    {
      SemanticPredicateEventHandler eventDelegate = (SemanticPredicateEventHandler)((Parser)source).Events[Parser.SemPredEvaluatedEventKey];
      if (eventDelegate != null) 
      {
        semPredEvent.setValues(type, condition, result, guessing);
        eventDelegate(source, semPredEvent);
      }
      checkController();

      return result;
    }
    public virtual void  fireSyntacticPredicateFailed(int guessing)
    {
      SyntacticPredicateEventHandler eventDelegate = (SyntacticPredicateEventHandler)((Parser)source).Events[Parser.SynPredFailedEventKey];
      if (eventDelegate != null) 
      {
        synPredEvent.setValues(0, guessing);
        eventDelegate(source, synPredEvent);
      }
      checkController();
    }
    public virtual void  fireSyntacticPredicateStarted(int guessing)
    {
      SyntacticPredicateEventHandler eventDelegate = (SyntacticPredicateEventHandler)((Parser)source).Events[Parser.SynPredStartedEventKey];
      if (eventDelegate != null) 
      {
        synPredEvent.setValues(0, guessing);
        eventDelegate(source, synPredEvent);
      }
      checkController();
    }
    public virtual void  fireSyntacticPredicateSucceeded(int guessing)
    {
      SyntacticPredicateEventHandler eventDelegate = (SyntacticPredicateEventHandler)((Parser)source).Events[Parser.SynPredSucceededEventKey];
      if (eventDelegate != null) 
      {
        synPredEvent.setValues(0, guessing);
        eventDelegate(source, synPredEvent);
      }
      checkController();
    }
    public virtual void  refreshListeners()
    {
      Hashtable clonedTable;

      lock(listeners.SyncRoot)
      {
        clonedTable = (Hashtable)listeners.Clone();
      }
      foreach (DictionaryEntry entry in clonedTable)
      {
        if (entry.Value != null)
        {
          ((Listener) entry.Value).refresh();
        }
      }
    }
    public virtual void  removeDoneListener(Listener l)
    {
      ((Parser)source).Done -= new TraceEventHandler(l.doneParsing);
      listeners.Remove(l);
    }
    public virtual void  removeMessageListener(MessageListener l)
    {
      ((Parser)source).ErrorReported   -= new MessageEventHandler(l.reportError);
      ((Parser)source).WarningReported -= new MessageEventHandler(l.reportWarning);
      //messageListeners.Remove(l);
      removeDoneListener(l);
    }
    public virtual void  removeParserListener(ParserListener l)
    {
      removeParserMatchListener(l);
      removeMessageListener(l);
      removeParserTokenListener(l);
      removeTraceListener(l);
      removeSemanticPredicateListener(l);
      removeSyntacticPredicateListener(l);
    }
    public virtual void  removeParserMatchListener(ParserMatchListener l)
    {
      ((Parser)source).MatchedToken    -= new MatchEventHandler(l.parserMatch);
      ((Parser)source).MatchedNotToken  -= new MatchEventHandler(l.parserMatchNot);
      ((Parser)source).MisMatchedToken  -= new MatchEventHandler(l.parserMismatch);
      ((Parser)source).MisMatchedNotToken  -= new MatchEventHandler(l.parserMismatchNot);
      //matchListeners.Remove(l);
      removeDoneListener(l);
    }
    public virtual void  removeParserTokenListener(ParserTokenListener l)
    {
      ((Parser)source).ConsumedToken  -= new TokenEventHandler(l.parserConsume);
      ((Parser)source).TokenLA    -= new TokenEventHandler(l.parserLA);
      //tokenListeners.Remove(l);
      removeDoneListener(l);
    }
    public virtual void  removeSemanticPredicateListener(SemanticPredicateListener l)
    {
      ((Parser)source).SemPredEvaluated  -= new SemanticPredicateEventHandler(l.semanticPredicateEvaluated);
      //semPredListeners.Remove(l);
      removeDoneListener(l);
    }
    public virtual void  removeSyntacticPredicateListener(SyntacticPredicateListener l)
    {
      ((Parser)source).SynPredStarted    -= new SyntacticPredicateEventHandler(l.syntacticPredicateStarted);
      ((Parser)source).SynPredFailed    -= new SyntacticPredicateEventHandler(l.syntacticPredicateFailed);
      ((Parser)source).SynPredSucceeded  -= new SyntacticPredicateEventHandler(l.syntacticPredicateSucceeded);
      //synPredListeners.Remove(l);
      removeDoneListener(l);
    }
    public virtual void  removeTraceListener(TraceListener l)
    {
      ((Parser)source).EnterRule  -= new TraceEventHandler(l.enterRule);
      ((Parser)source).ExitRule  -= new TraceEventHandler(l.exitRule);
      //traceListeners.Remove(l);
      removeDoneListener(l);
    }
  }
}
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