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Accommodate PHP 7.4 changes to certain "preg_match_all()" calls

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Summary:
Ref T13518. The result format of this call changed in PHP 7.4, which causes us to emit "-1" matches because "-1" survives `array_filter()`.

Filter results in a way that should survive both result formats.

Test Plan: Ran `arc unit --everything` under PHP 7.4.

Maniphest Tasks: T13518

Differential Revision: https://secure.phabricator.com/D21173
This commit is contained in:
epriestley 2020-04-26 08:30:30 -07:00
parent bf76fa547d
commit b81818b287
1 changed files with 20 additions and 1 deletions
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21
src/parser/xhpast/api/XHPASTNode.php
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@ -163,7 +163,26 @@ final class XHPASTNode extends AASTNode {
$re = '/\\\\.|(\$|\{\$|\${)([a-z_\x7F-\xFF][a-z0-9_\x7F-\xFF]*)/i';
$matches = null;
preg_match_all($re, $value, $matches, PREG_OFFSET_CAPTURE);
return ipull(array_filter($matches[2]), 0, 1);
// NOTE: The result format for this construction changed in PHP 7.4.
// See T13518.
$names = $matches[2];
foreach ($names as $name_idx => $name_match) {
if ($name_match === '') {
unset($names[$name_idx]);
continue;
}
if ($name_match[1] === -1) {
unset($names[$name_idx]);
continue;
}
}
$names = ipull($names, 0, 1);
return $names;
}
public function getStringLiteralValue() {