Syntax error when combining CALL and WHERE

[cleishm]

Syntax error when combining CALL and WHERE

[cleishm]

Hi @jeffreylovitz!

Thanks for picking up on this. While the opencypher TCK doesn't test for the use of a WHERE predicate on a CALL clause, I do think the grammar should support it.

This shouldn't be too hard to add. Would you be interested in doing so? You'd need to add an optional WHERE predicate to the call-clause in the parser (https://github.com/cleishm/libcypher-parser/blob/v0.6.2/lib/src/parser.leg#L326-L341), similarly to other clauses that accept this predicate (e.g. https://github.com/cleishm/libcypher-parser/blob/v0.6.2/lib/src/parser.leg#L306), and also update the AST builder call_clause to accept the AST nodes for the WHERE.

Cheers,
Chris

[jeffreylovitz]

Thanks, @cleishm!

I can give this a shot. If I understand correctly, after making the changes you outline, the CALL interface will have to be extended for the functionality cypher_ast_call_get_predicate. Are there other tasks this change entails?

[cleishm]

Resolved by #17