Grammatica - Bugs: bug #16783, Parser: Add support for parsing...

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bug #16783: Parser: Add support for parsing empty files

Submitter:	Per Cederberg <cederberg>
Submitted:	Thu 08 Jun 2006 05:38:15 AM UTC
Severity:	2 - Normal	Item Group:	Future Improvement
Status:	None	Assigned to:	cederberg
Open/Closed:	Open

Thu 08 Jun 2006 05:38:15 AM UTC, original submission:   Currently all productions in a grammar are required to match at least 1 token. This makes the grammar simpler to analyze, while losing only one single case of expressiveness -- it is impossible to declare a grammar accepting empty input. The grammar format should be improved in some way to also allow grammars that accept an empty file or a file with just ignored tokens (such as comments and whitespace).

Per Cederberg <cederberg>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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