[antlr-interest] Question about Composite grammar
Jim Idle
jimi at temporal-wave.com
Tue Jul 28 10:35:42 PDT 2009
This is a bug but it happens when you reference a token somewhere that
has no definition. You have to manually work out what the token is and
define it or do what I do and debug it. We have talked about the fix
but it is a bit tricky foe other reasons and has not been done yet.
It could be a side effect of multiple lexer files but if you need to
spilt your lexer then there is likely a design issue I would think.
Jim
On Jul 27, 2009, at 10:22 PM, Duy Tho Nguyen <tho at catglobe.com> wrote:
> Currently , i have a problem with my grammar file ( Code too big )
> so that i decide to split my grammar file in to some 2 smaller ones.
> It seemed to me that import function does not support more than 1
> lexer grammar file
> If i put like this :
> import lexer_file_1,lexer_file_2;
> it raise an error when generate code :
>
>
> java.lang.ArrayIndexOutOfBoundsException: 3
> at org.antlr.tool.Rule.trackRuleReferenceInAlt(Rule.java:283)
> at org.antlr.tool.Grammar.altReferencesRule(Grammar.java:1867)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.atom
> (DefineGrammarItemsWalker.java:2096)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.element
> (DefineGrammarItemsWalker.java:1717)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.alternative
> (DefineGrammarItemsWalker.java:1571)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.block
> (DefineGrammarItemsWalker.java:1201)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.rule
> (DefineGrammarItemsWalker.java:924)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.rules
> (DefineGrammarItemsWalker.java:576)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.grammarSpec
> (DefineGrammarItemsWalker.java:361)
> at org.antlr.grammar.v2.DefineGrammarItemsWalker.grammar
> (DefineGrammarItemsWalker.java:148)
> at org.antlr.tool.Grammar.defineGrammarSymbols(Grammar.java:665)
> at org.antlr.tool.CompositeGrammar.defineGrammarSymbols
> (CompositeGrammar.java:351)
> at org.antlr.tool.Grammar.setGrammarContent(Grammar.java:578)
> at
> org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createNewGrammar
> (Unknown Source)
> at
> org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createLexerGrammar(
> Unknown Source)
> at
> org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createGrammars
> (Unknown Source)
> at org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.analyze
> (Unknown Source)
> at org.antlr.works.grammar.engine.GrammarEngineImpl.analyze
> (Unknown Source)
> at org.antlr.works.debugger.local.DBLocal.analyzeGrammar(Unknown
> Source)
> at
> org.antlr.works.debugger.local.DBLocal.generateAndCompileGrammar
> (Unknown Source)
> at org.antlr.works.debugger.local.DBLocal.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
>
> Does anyone get this problem before ? Please help me with it . If
> you need some more detail , please ask me .
>
> Kinds regard
>
>
>
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