Add a non-consuming combinator that returns `()` - Githubissues

winnow-rs / winnow

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Add a non-consuming combinator that returns `()` #399

Closed epage closed 9 months ago

epage commented 11 months ago

Please complete the following tasks

[X] I have searched the discussions
[X] I have searched the open and rejected issues

winnow version

0.5.30

Describe your use case

success only handles the equivalent of Parser::value but there is also Parser::void, Parser::default_value (#398).

Describe the solution you'd like

chumsky::primitive::empty would be nice

The main question is in naming

empty: conveys what is done for parsing
success reads nicely for longer alts
void ... too focused on the output and not the grammar

Alternatives, if applicable

No response

Additional Context

Split out of #82

baoyachi commented 10 months ago

Provide a few name references：

noop or no_op: representing 'no operation,' meaning it does not produce any effect when executed.
pass
skip
do_nothing