[antlr-interest] grammar overlapping in a rule

[Jigang (Robert) Sun]

The following garmmar is extracted from Clean Language Report version 2.1, p113, p116 and p117.
You can see FunctionName and ConstructorName overlapping.

Operator = FunctionName 
          | ConstructorName

FunctionName = LowerCaseId | UpperCaseId | FunnyId
ConstructorName = UpperCaseId | FunnyId

LowerCaseId = LowerCaseChar~{IdChar}
UpperCaseId = UpperCaseChar~{IdChar}
FunnyId = {SpecialChar}+

Any ideas?

Thanks.
Jigang


	

	
		
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