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BNFC / bnfc

BNF Converter
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Ignore internal non-terminals in parser #264

Closed andreasabel closed 4 years ago

andreasabel commented 4 years ago 
Prg. Program ::= "main" ;
internal VInt. Value ::= Integer ;

BNFC does currently not produce a valid Happy parser for this.

happy InternalCat/Par.y
InternalCat/Par.y: unknown identifier 'Value'

When generating the parser, we should ignore all non-parsable rules.