antlrworks2 - AntlrWorks 2 output -


so using antlrworks 2, working on rather large grammar. problem in grammar there multiple ambiguities trying work through.

i wondering if there way interpret rules invoked when there failure.

for instance, when run rule following output

[@0,0:1='99',<20>,1:0] [@1,2:1='<eof>',<-1>,1:2] line 1:0 mismatched input '99' expecting digit2 (dummy 99)

i wondering [@0,0:1='99',<20>,1:0] means. @0 or <20> have relationship rule number in grammar or ?

here breakdown of default token formatting.

[@{tokenindex},{startindex}:{stopindex}={text},<{tokentype}>,{line}:{column}]

the {tokentype} field corresponds particular lexer rule (the constant declared in generated lexer). however, -> type(x) command can used in lexer rule reassign tokens produced rule type. if value 20 assigned token named foo, first token in listing produced either lexer rule named foo or lexer rule containing action -> type(foo) or have user-defined action explicitly assigns type foo token produced other rule (this code wrote, not code generated antlr).


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