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From "Dmitri Blinov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JEXL-237) Ability to restrict usage of certain names when declaring local variables
Date Thu, 13 Jul 2017 11:41:00 GMT
Dmitri Blinov created JEXL-237:
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             Summary: Ability to restrict usage of certain names when declaring local variables
                 Key: JEXL-237
                 URL: https://issues.apache.org/jira/browse/JEXL-237
             Project: Commons JEXL
          Issue Type: Wish
    Affects Versions: 3.1
            Reporter: Dmitri Blinov
            Priority: Minor


One of the errors the scriptwriter usually makes is an accidental override of certain context
variables with his own local variables, which leads to nasty bugs detected only when script
is executed. As of now there is only a small list of reserved words that can not be used as
a valid variable name, and it is restricted to basic Jexl syntax keywords. When Jexl syntax
is extended with custom functions and predefined context variables, its much easier for a
local variable name to clash with predefined name, thus altering script execution further
on. To exclude those errors it is needed that a custom name verification would exist, prohibiting
the scripts from be successfully parsed.



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