[
https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17019468#comment-17019468
]
Dmitri Blinov commented on JEXL-307:
------------------------------------
It seems I have found a nasty regression - the code below fails with _*x:
variable is already defined*_
{code:java}
@Test
public void testNamed() throws Exception {
JexlFeatures f = new JexlFeatures();
f.lexical(true);
JexlEngine jexl = new JexlBuilder().strict(true).features(f).create();
JexlScript script = jexl.createScript("var i = function(x, y, z)
{return x + y + z}; i(20,20,2)");
JexlContext jc = new MapContext();
Object result = script.execute(jc);
Assert.assertEquals(result, 42);
}
{code}
If the lexical feature is switched *off* everything works OK.
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
