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Incremental parsing API and improved error handling #71

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DemiMarie opened this issue Aug 22, 2016 · 1 comment
Open

Incremental parsing API and improved error handling #71

DemiMarie opened this issue Aug 22, 2016 · 1 comment

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@DemiMarie
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DemiMarie commented Aug 22, 2016 •
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Happy currently gives pretty bad error messages. This is shown by GHC's error messages on invalid syntax, which usually aren't very good.

One solution is used by the Menhir parser generator. Menhir provides an incremental parser API, which allows for error handling based on what states an error can be detected in. Its manual provides more details.
@DemiMarie DemiMarie changed the title Investigate using Menhir's techniques for better error messages Incremental parsing API and improved error handling Dec 1, 2016
@Ericson2314
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FYI opened #240 for incremental parsing itself, as opposed to this particular use-case of it.

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@Ericson2314 @DemiMarie