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Re: Using %prec to resolve shift-reduce


From: Simon Richter
Subject: Re: Using %prec to resolve shift-reduce
Date: Wed, 30 Nov 2016 22:40:25 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.4.0

Hi,

On 30.11.2016 22:36, Hans Åberg wrote:

>> %token IF "if"
>> %token ELSE "else"

> This can be resolved by adding
>   %nonassoc "then"
>   %nonassoc "else"

Yes, that is what I'm doing, except that I need to give a precedence to
the closing parenthesis because there is no explicit "then" keyword.

This is why I'd like to use %prec here, in order to avoid inadvertently
introducing a precedence in an unrelated place and hiding errors.

   Simon

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