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https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Biestro resolved JEXL-307.
--------------------------------
Resolution: Fixed
Changeset: d15901734478efeac605d3dc55c4b25a479c28d4
Author: henrib <[email protected]>
Date: 2019-10-27 13:59
Message: JEXL-307: added lexical and lexical shade option;
JEXL-307: added lexical feature, controlling var redefinition at parsing time;
JEXL-307: refactored option (JexlOption) and added feature to deal with lexical
scope;
JEXL-307: refactored test code to use new option classes;
JEXL-307: added lexical scope and frame handling interpreting scripts, lambdas,
for-loops;
JEXL-314: changed JexlArithmetic/Interpreter to handle NullOperand exception
when needed
> Variable redeclaration option
> -----------------------------
>
> Key: JEXL-307
> URL: https://issues.apache.org/jira/browse/JEXL-307
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.1
> Reporter: Dmitri Blinov
> Assignee: Henri Biestro
> Priority: Minor
> Fix For: 3.2
>
>
> As of now, JEXL allows a script writer to redeclare a local variable during
> script evaluation.
> {code:java}
> var a = 1; var a = 2;{code}
> This may lead to potential errors with misspelled names and clashed
> variables. Checking for already defined variable is a common feature of many
> languages. This feature can be implemented in JEXL as an additional option of
> JexlFeatures class, enabled by default, thus allowing compatibility with
> existing code.
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