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From "Eric Milles (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GROOVY-8913) Parrot Parser: binary expression interpreted as cast and unary plus
Date Thu, 06 Dec 2018 22:45:00 GMT

     [ https://issues.apache.org/jira/browse/GROOVY-8913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Milles updated GROOVY-8913:
--------------------------------
    Description: 
Groovy 2.6 (and possibly/probably 3.0) is parsing this expression differently from 2.5:
{code:groovy}
def x = (a.b) + c()
{code}

In Groovy 2.5, this is a DeclarationExpression with a VariableExpression for the left expression
and a BinaryExpression (with PLUS operator) for the right expression.  Parrot Parser is seeing
the right expression as a CastExpression with a UnaryPlusExpression.

  was:
Groovy 2.6 (and possible 3.0) is parsing this expression differently:
{code:groovy}
def x = (a.b) + c()
{code}

In Groovy 2.4, this is a DeclarationExpression with a VariableExpression for the left expression
and a BinaryExpression (with PLUS operator) for the right expression.  Parrot Parser is seeing
the right expression as a CastExpression with a UnaryPlusExpression.


> Parrot Parser: binary expression interpreted as cast and unary plus
> -------------------------------------------------------------------
>
>                 Key: GROOVY-8913
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8913
>             Project: Groovy
>          Issue Type: Bug
>          Components: parser-antlr4
>    Affects Versions: 2.6.0-alpha-4
>            Reporter: Eric Milles
>            Priority: Major
>
> Groovy 2.6 (and possibly/probably 3.0) is parsing this expression differently from 2.5:
> {code:groovy}
> def x = (a.b) + c()
> {code}
> In Groovy 2.5, this is a DeclarationExpression with a VariableExpression for the left
expression and a BinaryExpression (with PLUS operator) for the right expression.  Parrot Parser
is seeing the right expression as a CastExpression with a UnaryPlusExpression.



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