List of translateDisplayAltToWalkAlt() Examples

Examples of translateDisplayAltToWalkAlt()

org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()
The DFA decision for this NFA decision state always has an exit path for loops as n+1 for n alts in the loop. That is really useful for displaying nondeterministic alts and so on, but for walking the NFA to get a sequence of edge labels or for actually parsing, we need to get the real alt number. The real alt number for exiting a loop is always 1 as transition 0 points at the exit branch (we compute DFAs always for loops at the loopback state). For walking/parsing the loopback state: 1 2 3 display alt (for human consumption) 2 3 1 walk alt For walking the block start: 1 2 3 display alt 1 2 3 For walking the bypass state of a (...)* loop: 1 2 3 display alt 1 1 2 all block alts map to entering loop exit means take bypass Non loop EBNF do not need to be translated; they are ignored by this method as decisionStateType==0. Return same alt if we can't translate.

Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()


        for (Object nonDetAlt : nonDetAlts) {
            Integer displayAltI = (Integer) nonDetAlt;
            NFAState nfaStart = message.probe.dfa.getNFADecisionStartState();


            int tracePathAlt = nfaStart.translateDisplayAltToWalkAlt(displayAltI);
            if (firstAlt == 0)
                firstAlt = tracePathAlt;


            List path =
                    message.probe.getNFAPathStatesForAlt(firstAlt,

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Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()

    int firstAlt = 0;
    if ( nondetAlts!=null ) {
      for (Integer displayAltI : nondetAlts) {
        if ( DecisionProbe.verbose ) {
          int tracePathAlt =
            nfaStart.translateDisplayAltToWalkAlt(displayAltI);
          if ( firstAlt == 0 ) {
            firstAlt = tracePathAlt;
          }
          List<? extends NFAState> path =
            probe.getNFAPathStatesForAlt(firstAlt,

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Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()

    // compute lookahead for each alt
    int numAlts = getNumberOfAltsForDecisionNFA(decisionStartState);
    LookaheadSet[] altLook = new LookaheadSet[numAlts+1];
    for (int alt = 1; alt <= numAlts; alt++) {
      int walkAlt =
        decisionStartState.translateDisplayAltToWalkAlt(alt);
      NFAState altLeftEdge = getNFAStateForAltOfDecision(decisionStartState, walkAlt);
      NFAState altStartState = (NFAState)altLeftEdge.transition[0].target;
      //System.out.println("alt "+alt+" start state = "+altStartState.stateNumber);
      altLook[alt] = ll1Analyzer.LOOK(altStartState);
      //System.out.println("alt "+alt+": "+altLook[alt].toString(this));

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Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()

    if ( nondetAlts!=null ) {
      for (Iterator iter = nondetAlts.iterator(); iter.hasNext();) {
        Integer displayAltI = (Integer) iter.next();
        if ( DecisionProbe.verbose ) {
          int tracePathAlt =
            nfaStart.translateDisplayAltToWalkAlt(displayAltI.intValue());
          if ( firstAlt == 0 ) {
            firstAlt = tracePathAlt;
          }
          List path =
            probe.getNFAPathStatesForAlt(firstAlt,

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Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()

    if ( nondetAlts!=null ) {
      for (Iterator iter = nondetAlts.iterator(); iter.hasNext();) {
        Integer displayAltI = (Integer) iter.next();
        if ( DecisionProbe.verbose ) {
          int tracePathAlt =
            nfaStart.translateDisplayAltToWalkAlt(probe.dfa,
                                displayAltI.intValue());
          if ( firstAlt == 0 ) {
            firstAlt = tracePathAlt;
          }
          List path =

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Examples of org.antlr.analysis.NFAState.translateDisplayAltToWalkAlt()

    if ( nondetAlts!=null ) {
      for (Iterator iter = nondetAlts.iterator(); iter.hasNext();) {
        Integer displayAltI = (Integer) iter.next();
        if ( DecisionProbe.verbose ) {
          int tracePathAlt =
            nfaStart.translateDisplayAltToWalkAlt(displayAltI.intValue());
          if ( firstAlt == 0 ) {
            firstAlt = tracePathAlt;
          }
          List path =
            probe.getNFAPathStatesForAlt(firstAlt,

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