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Lint against undefined magic symbols

Summary: Fixes T5639. Allows the detection of undefined magic symbols, such as the use of `__DIR__` in a codebase that targets <  PHP 5.3.0.

Test Plan: Added a test case.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T5639

Differential Revision: https://secure.phabricator.com/D11386
This commit is contained in:
Joshua Spence 2015-01-15 06:55:45 +11:00
parent bb8e9d7357
commit 7aa89ddf96
2 changed files with 6 additions and 1 deletions

View file

@ -596,7 +596,10 @@ final class ArcanistXHPASTLinter extends ArcanistBaseXHPASTLinter {
// TODO: Technically, this will include function names. This is unlikely to
// cause any issues (unless, of course, there existed a function that had
// the same name as some constant).
$constants = $root->selectDescendantsOfType('n_SYMBOL_NAME');
$constants = $root->selectDescendantsOfTypes(array(
'n_SYMBOL_NAME',
'n_MAGIC_SCALAR',
));
foreach ($constants as $node) {
$name = $node->getConcreteString();
$version = idx($compat_info['constants'], $name, array());

View file

@ -10,6 +10,7 @@ static::m();
1 ?: 2;
$a = 'stdClass';
$a::m();
echo __DIR__;
~~~~~~~~~~
error:3:1
error:4:5
@ -18,6 +19,7 @@ error:6:3
error:7:3
error:8:1
error:10:1
error:13:6
~~~~~~~~~~
~~~~~~~~~~
{"config": {"xhpast.php-version": "5.2.3"}}