Examples of org.jostraca.comp.antlr.collections.impl.BitSet

Package org.jostraca.comp.antlr.collections.impl

Examples of org.jostraca.comp.antlr.collections.impl.BitSet

org.jostraca.comp.antlr.collections.impl.BitSet
A BitSet to replace java.util.BitSet. Primary differences are that most set operators return new sets as opposed to oring and anding "in place". Further, a number of operations were added. I cannot contain a BitSet because there is no way to access the internal bits (which I need for speed) and, because it is final, I cannot subclass to add functionality. Consider defining set degree. Without access to the bits, I must call a method n times to test the ith bit...ack! Also seems like or() from util is wrong when size of incoming set is bigger than this.bits.length. @author Terence Parr @author
Pete Wells

    int depth = alt.lookaheadDepth;
    if ( depth == GrammarAnalyzer.NONDETERMINISTIC ) {
      depth = grammar.maxk;
    }
    for (int i=1; i<=depth && i<=maxDepth; i++) {
      BitSet p = alt.cache[i].fset;
      if (p.degree() != 0) {
        return false;
      }
    }
    return true;
  }

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     */
    protected String filterRule = null;


    LexerGrammar(String className_, Tool tool_, String superClass) {
        super(className_, tool_, superClass);
        charVocabulary = new BitSet();


        // Lexer usually has no default error handling
        defaultErrorHandler = false;
    }

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     *  conflicts with parsing binary files.
     */
    boolean hasEpsilon = false;


    public Lookahead() {
        fset = new BitSet();
    }

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    protected CommonHiddenStreamToken firstHidden = null;


    public TokenStreamHiddenTokenFilter(TokenStream input) {
        super(input);
        hideMask = new BitSet();
    }

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    protected void genBitsets(Vector bitsetList,
                              int maxVocabulary
                              ) {
        println("");
        for (int i = 0; i < bitsetList.size(); i++) {
            BitSet p = (BitSet)bitsetList.elementAt(i);
            // Ensure that generated BitSet is large enough for vocabulary
            p.growToInclude(maxVocabulary);
            genBitSet(p, i);
        }
    }

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        StringBuffer e = new StringBuffer(100);
        boolean first = true;


        e.append("(");
        for (int i = 1; i <= k; i++) {
            BitSet p = look[i].fset;
            if (!first) {
                e.append(") && (");
            }
            first = false;

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        int depth = alt.lookaheadDepth;
        if (depth == GrammarAnalyzer.NONDETERMINISTIC) {
            depth = grammar.maxk;
        }
        for (int i = 1; i <= depth && i <= maxDepth; i++) {
            BitSet p = alt.cache[i].fset;
            if (p.degree() != 0) {
                return false;
            }
        }
        return true;
    }

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     */
    protected String filterRule = null;


    LexerGrammar(String className_, Tool tool_, String superClass) {
        super(className_, tool_, superClass);
        charVocabulary = new BitSet();


        // Lexer usually has no default error handling
        defaultErrorHandler = false;
    }

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     *  conflicts with parsing binary files.
     */
    boolean hasEpsilon = false;


    public Lookahead() {
        fset = new BitSet();
    }

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    protected CommonHiddenStreamToken firstHidden = null;


    public TokenStreamHiddenTokenFilter(TokenStream input) {
        super(input);
        hideMask = new BitSet();
    }

View Full Code Here

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Related Classes of org.jostraca.comp.antlr.collections.impl.BitSet

org.jostraca.comp.antlr.ANTLRParser

org.jostraca.comp.antlr.CodeGenerator

org.jostraca.comp.antlr.CSharpCodeGenerator

org.jostraca.comp.antlr.JavaCodeGenerator

org.jostraca.comp.antlr.LexerGrammar

org.jostraca.comp.antlr.LLkAnalyzer

org.jostraca.comp.antlr.Lookahead

org.jostraca.comp.antlr.TokenStreamBasicFilter

org.jostraca.comp.antlr.TokenStreamHiddenTokenFilter

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