[jira] [Commented] (CAMEL-24771) camel-core - simple predicate fails to parse a } inside a quoted literal

["Claus Ibsen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAMEL-24771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18115991#comment-18115991 ] 

Claus Ibsen commented on CAMEL-24771:
-------------------------------------

Fixed in https://github.com/apache/camel/pull/26509 (commit 742b30f85229).

_Claude Code on behalf of davsclaus_

> camel-core - simple predicate fails to parse a } inside a quoted literal
> ------------------------------------------------------------------------
>
>                 Key: CAMEL-24771
>                 URL: https://issues.apache.org/jira/browse/CAMEL-24771
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>            Reporter: Claus Ibsen
>            Assignee: Claus Ibsen
>            Priority: Major
>             Fix For: 4.23.0
>
>
> A simple *predicate* with a closing brace inside a quoted literal does not parse:
> {code}
> ${body} contains '}'
> ${body} contains '{name:XOrder}'
> ${body} == "[]}"
> {code}
> fails with {{singleQuote has no matching start token}} (or {{doubleQuote ...}}), while the same text as an expression parses fine. The validator page of the user manual uses {{${body} contains '{name:XOrder}'}} as its example, so a user copying it hits this.
> Cause: {{SimplePredicateParser.createNode}} turns every {{}}} token into a {{SimpleFunctionEnd}}, whether or not a function is open, so the {{}}} inside the quotes closes nothing and unbalances the quote pairing. {{SimpleExpressionParser}} only accepts a function end while a function is open ({{functions.get() > 0}}). The predicate parser also tracked the open function as a boolean, which is why the fix needs a depth counter: nested functions such as {{${body[x].get(${exchangeProperty[i]})[y]} == 1}} must keep balancing.
> Found while validating the documentation examples (CAMEL-24770).



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