ArcanistSelfMemberReferenceXHPASTLinterRule.php
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ArcanistSelfMemberReferenceXHPASTLinterRule.php
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	<?php

	final class ArcanistSelfMemberReferenceXHPASTLinterRule
	extends ArcanistXHPASTLinterRule {

	const ID = 57;

	public function getLintName() {
	return pht('Self Member Reference');
	}

	public function getLintSeverity() {
	return ArcanistLintSeverity::SEVERITY_WARNING;
	}

	public function process(XHPASTNode $root) {
	$class_declarations = $root->selectDescendantsOfType('n_CLASS_DECLARATION');

	foreach ($class_declarations as $class_declaration) {
	$class_name = $class_declaration
	->getChildOfType(1, 'n_CLASS_NAME')
	->getConcreteString();
	$class_static_accesses = $class_declaration
	->selectDescendantsOfType('n_CLASS_STATIC_ACCESS');
	$closures = $this->getAnonymousClosures($class_declaration);

	foreach ($class_static_accesses as $class_static_access) {
	$class_ref = $class_static_access->getChildByIndex(0);

	if ($class_ref->getTypeName() != 'n_CLASS_NAME') {
	continue;
	}
	$class_ref_name = $class_ref->getConcreteString();

	if (strtolower($class_name) == strtolower($class_ref_name)) {
	$in_closure = false;

	foreach ($closures as $closure) {
	if ($class_ref->isDescendantOf($closure)) {
	$in_closure = true;
	break;
	}
	}

	$version_target = $this->version;
	if (!$version_target) {
	$version_target = phpversion();
	}

	if (version_compare($version_target, '5.4.0', '>=') \|\| !$in_closure) {
	$this->raiseLintAtNode(
	$class_ref,
	pht(
	'Use `%s` for local static member references.',
	'self::'),
	'self');
	}
	}
	}
	}
	}

	}