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ruby / lrama

Pure Ruby LALR parser generator
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Introduce the `-W` and `--warnings` options and support redefined parameterizing rules #448

Closed ydah closed 2 months ago

ydah commented 2 months ago

This PR adds an option to output warnings and adds an option to warn when parameterizing rules are being redefined. Specify -W or --warning option to output a warning about the redefinition of parameterizing rules.

Diagnostics:
    -W, --warnings         report the warnings

Motivation

Currently, for example, there is no way for users to know that the parameterizing rules provided by the standard library have been redefined. Therefore, this support will allow users to know when parameterizing rules have been redefined.

yui-knk commented 2 months ago

I talked with @ydah in person on 6/25 (Wed). I agreed to add -W option and --warnings option, but I thought introducing the categories are premature because we are not sure about what categories are the best. We will introduce warning categories once we get feedback for that.