SimpleConditionalExpressions can not parse CASE ... BETWEEN

[hubipe]

Bug Report

Parser can not parse this DQL:

SELECT o.id
FROM Entity o
WHERE CASE o.vatIncluded WHEN TRUE THEN o.priceVat ELSE o.priceWoVat END BETWEEN 100 AND 300

The exception Expected =, <, <=, <>, >, >=, !=, got 'BETWEEN' is raised instead of successful parsing.
The only way around I found about it was to wrap the CASE to a function:

SELECT o.id
FROM Entity o
WHERE ABS(CASE o.vatIncluded WHEN TRUE THEN o.priceVat ELSE o.priceWoVat END) BETWEEN 100 AND 300

In this case, the query is parsed successfully.
It is worth noting, that adding parentheses anywhere won't help.

Q	A
Version	2.19.6 and 2.5.14

Current behavior

Parser raises exception

Expected behavior

Parser should parse the query successfully

How to reproduce

Run this in PHP:

$em->createQuery('SELECT o.id
FROM Entity o
WHERE CASE o.vatIncluded WHEN TRUE THEN o.priceVat ELSE o.priceWoVat END BETWEEN 100 AND 300')->getAST();

You'll get an exception