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From "Vera Filippova (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (THRIFT-4496) Dealing with language keywords in Thrift (e.g. service method names)
Date Thu, 25 Oct 2018 16:04:00 GMT

    [ https://issues.apache.org/jira/browse/THRIFT-4496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16663949#comment-16663949
] 

Vera Filippova commented on THRIFT-4496:
----------------------------------------

This PR made it possible to define a language-specific list of keywords (if the language generator
overrides lang_keywords()). By default, all generators use the same list of keywords that
has been in thrift.ll. I defined a language specific keywords only for python generator.

> Dealing with language keywords in Thrift (e.g. service method names)
> --------------------------------------------------------------------
>
>                 Key: THRIFT-4496
>                 URL: https://issues.apache.org/jira/browse/THRIFT-4496
>             Project: Thrift
>          Issue Type: New Feature
>          Components: Compiler (General)
>            Reporter: Vera Filippova
>            Assignee: James E. King III
>            Priority: Minor
>             Fix For: 0.12.0
>
>
> Apache Thrift compiler doesn't allow to use keywords in any of supported languages as
field names. However, there are other compilers, like Scrooge, which do allow using some keywords
as field identifiers, which leads to incompatibility.
> Assume we had a service with 'delete' method, with Java code generated by Scrooge. Now
we'd like to generate Python code with Apache Thrift, but encounter an error because of the
'delete' keyword.
> I understand that using only Apache Thrift compiler, a user will never encounter this
problem, but I think enabling keywords by request seems feasible.
> h1. Proposal
> It's possible to tweak keywords on code generation stage, e.g. use 'delete_' as a name
of a generated function instead of 'delete', then use the original method name for a protocol
message: writeMethodBegin('delete').
> This feature could be enabled with an additional flag, e.g. --screen-keywords.
> I have a draft for python generator here [https://github.com/nsrtvwls/thrift]
> The questions are, is this functionality welcome? If yes, would it require to have it
supported for all languages?



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