antlr

Class DefaultToolErrorHandler

java.lang.Object

antlr.DefaultToolErrorHandler

All Implemented Interfaces:

ToolErrorHandler

class DefaultToolErrorHandler
extends java.lang.Object
implements ToolErrorHandler

Field Summary

Fields

Modifier and Type	Field and Description
(package private) CharFormatter	javaCharFormatter

Constructor Summary

Constructors

Constructor and Description
DefaultToolErrorHandler(Tool tool)

Method Summary

Modifier and Type	Method and Description
void	warnAltAmbiguity(Grammar grammar, AlternativeBlock blk, boolean lexicalAnalysis, int depth, Lookahead[] sets, int altIdx1, int altIdx2) Issue a warning about ambiguity between a alternates
void	warnAltExitAmbiguity(Grammar grammar, BlockWithImpliedExitPath blk, boolean lexicalAnalysis, int depth, Lookahead[] sets, int altIdx) Issue a warning about ambiguity between an alternate and exit path.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

javaCharFormatter

CharFormatter javaCharFormatter

Constructor Detail

DefaultToolErrorHandler

DefaultToolErrorHandler(Tool tool)

Method Detail

warnAltAmbiguity

public void warnAltAmbiguity(Grammar grammar,
                             AlternativeBlock blk,
                             boolean lexicalAnalysis,
                             int depth,
                             Lookahead[] sets,
                             int altIdx1,
                             int altIdx2)

Issue a warning about ambiguity between a alternates

Specified by:

warnAltAmbiguity in interface ToolErrorHandler

Parameters:

blk - The block being analyzed

lexicalAnalysis - true for lexical rule

depth - The depth of the ambiguity

sets - An array of bitsets containing the ambiguities

altIdx1 - The zero-based index of the first ambiguous alternative

altIdx2 - The zero-based index of the second ambiguous alternative

warnAltExitAmbiguity

public void warnAltExitAmbiguity(Grammar grammar,
                                 BlockWithImpliedExitPath blk,
                                 boolean lexicalAnalysis,
                                 int depth,
                                 Lookahead[] sets,
                                 int altIdx)

Issue a warning about ambiguity between an alternate and exit path.

Specified by:

warnAltExitAmbiguity in interface ToolErrorHandler

Parameters:

blk - The block being analyzed

lexicalAnalysis - true for lexical rule

depth - The depth of the ambiguity

sets - An array of bitsets containing the ambiguities

altIdx - The zero-based index of the ambiguous alternative