I get multiple instances of error 104 followed by a crash whenever I try to
generate my grammar.
The grammar is 1200 lines and uses many rule input and return values.
How do I identify the line that is causing the error.
[02:48:17] error(104): cannot find an attribute name in attribute
declaration
[02:48:17] java.lang.StringIndexOutOfBoundsException: String index out of
range: -1
at java.lang.String.charAt(String.java:558)
at org.antlr.tool.Attribute.extractAttribute(Attribute.java:99)
at org.antlr.tool.Attribute.<init>(Attribute.java:47)
at org.antlr.tool.AttributeScope.addAttributes(AttributeScope.java:122)
at
org.antlr.grammar.v2.DefineGrammarItemsWalker.ruleScopeSpec(DefineGrammarItemsWalker.java:1052)
at
org.antlr.grammar.v2.DefineGrammarItemsWalker.rule(DefineGrammarItemsWalker.java:891)
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:193)
at org.antlr.tool.Grammar.defineGrammarSymbols(Grammar.java:702)
at
org.antlr.tool.CompositeGrammar.defineGrammarSymbols(CompositeGrammar.java:351)
at org.antlr.tool.Grammar.setGrammarContent(Grammar.java:579)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createNewGrammar(ANTLRGrammarEngineImpl.java:192)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createParserGrammar(ANTLRGrammarEngineImpl.java:225)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createCombinedGrammar(ANTLRGrammarEngineImpl.java:203)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createGrammars(ANTLRGrammarEngineImpl.java:165)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.analyze(ANTLRGrammarEngineImpl.java:272)
at
org.antlr.works.grammar.engine.GrammarEngineImpl.analyze(GrammarEngineImpl.java:325)
at org.antlr.works.grammar.CheckGrammar.run(CheckGrammar.java:70)
at java.lang.Thread.run(Thread.java:613)
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