Parser backtracking issues with nested arrays #2690

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1. natefaubion commented on Feb 23, 2017

   

   natefaubion

   on Feb 23, 2017

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   Originally, the issue manifested for me with record binders in a case statement. But it seems to be an issue with nested arrays in general.
2. paf31

   added

   type: bug

   error-message

   on Feb 23, 2017
3. paf31

   added this to the 1.0 milestone on Feb 23, 2017
4. paf31 commented on Mar 11, 2017

   

   paf31

   on Mar 11, 2017

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   I've made multiple attempts to fix this, but all of them have involved non-trivial changes to the AST to avoid backtracking, and none of them have quite worked how I would like. I'm going to suggest this wait until we can move away from Parsec and towards something with better support for automatically left-factoring the grammar.
5. paf31

   modified the milestones: Approved, 1.0 on Mar 19, 2017
6. hdgarrood

   added

   parser

   on Feb 17, 2019
7. hdgarrood commented on May 7, 2019

   

   hdgarrood

   on May 7, 2019

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   Now that the cst parser has been merged the error is better:

   Error found:
   at example.purs:6:15 - 6:16 (line 6, column 15 - line 6, column 16)
   
     Unable to parse module:
     Expected ':', saw '='
   
   
   See https://github.com/purescript/documentation/blob/master/errors/ErrorParsingModule.md for more information,
   or to contribute content related to this error.
   

   so I think this can be closed.
8. hdgarrood

   closed this as completedon May 7, 2019