File	Doc	Category	Size	Date	Package
DefaultToolErrorHandler.java	API Doc	Glassfish v2 API	4340	Wed Aug 30 15:34:06 BST 2006	persistence.antlr

DefaultToolErrorHandler

• java.lang.Object

Fields Summary
private final Tool	antlrTool
CharFormatter	javaCharFormatter

Constructors Summary
DefaultToolErrorHandler(Tool tool) antlrTool = tool;

Methods Summary
private void	dumpSets(java.lang.String[] output, int outputStartIndex, persistence.antlr.Grammar grammar, boolean lexicalAnalysis, int depth, persistence.antlr.Lookahead[] sets) Dump token/character sets to a string array suitable for {@link persistence.antlr.Tool.warning(String[], String, int, int) param output The array that will contain the token/character set dump, one element per k (lookahead) value param outputStartIndex The index into output that the dump should start at. param lexicalAnalysis true for lexical rule param depth The depth of the ambiguity param sets An array of bitsets containing the ambiguities StringBuffer line = new StringBuffer(100); for (int i = 1; i <= depth; i++) { line.append("k==").append(i).append(':"); if (lexicalAnalysis) { String bits = sets[i].fset.toStringWithRanges(",", javaCharFormatter); if (sets[i].containsEpsilon()) { line.append("<end-of-token>"); if (bits.length() > 0) { line.append(',"); } } line.append(bits); } else { line.append(sets[i].fset.toString(",", grammar.tokenManager.getVocabulary())); } output[outputStartIndex++] = line.toString(); line.setLength(0); }
public void	warnAltAmbiguity(persistence.antlr.Grammar grammar, persistence.antlr.AlternativeBlock blk, boolean lexicalAnalysis, int depth, persistence.antlr.Lookahead[] sets, int altIdx1, int altIdx2) Issue a warning about ambiguity between a alternates param blk The block being analyzed param lexicalAnalysis true for lexical rule param depth The depth of the ambiguity param sets An array of bitsets containing the ambiguities param altIdx1 The zero-based index of the first ambiguous alternative param altIdx2 The zero-based index of the second ambiguous alternative final StringBuffer line = new StringBuffer(100); if (blk instanceof RuleBlock && ((RuleBlock)blk).isLexerAutoGenRule()) { Alternative ai = blk.getAlternativeAt(altIdx1); Alternative aj = blk.getAlternativeAt(altIdx2); RuleRefElement rri = (RuleRefElement)ai.head; RuleRefElement rrj = (RuleRefElement)aj.head; String ri = CodeGenerator.reverseLexerRuleName(rri.targetRule); String rj = CodeGenerator.reverseLexerRuleName(rrj.targetRule); line.append("lexical nondeterminism between rules "); line.append(ri).append(" and ").append(rj).append(" upon"); } else { if (lexicalAnalysis) { line.append("lexical "); } line.append("nondeterminism between alts "); line.append(altIdx1 + 1).append(" and "); line.append(altIdx2 + 1).append(" of block upon"); } final String [] output = new String [depth + 1];; output[0] = line.toString(); dumpSets(output, 1, grammar, lexicalAnalysis, depth, sets); antlrTool.warning(output, grammar.getFilename(), blk.getLine(), blk.getColumn());
public void	warnAltExitAmbiguity(persistence.antlr.Grammar grammar, persistence.antlr.BlockWithImpliedExitPath blk, boolean lexicalAnalysis, int depth, persistence.antlr.Lookahead[] sets, int altIdx) Issue a warning about ambiguity between an alternate and exit path. param blk The block being analyzed param lexicalAnalysis true for lexical rule param depth The depth of the ambiguity param sets An array of bitsets containing the ambiguities param altIdx The zero-based index of the ambiguous alternative String [] output = new String[depth + 2]; output[0] = (lexicalAnalysis ? "lexical " : "") + "nondeterminism upon"; dumpSets(output, 1, grammar, lexicalAnalysis, depth, sets); output[depth + 1] = "between alt " + (altIdx + 1) + " and exit branch of block"; antlrTool.warning(output, grammar.getFilename(), blk.getLine(), blk.getColumn());