ArcanistKeywordCasingXHPASTLinterRule.php
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ArcanistKeywordCasingXHPASTLinterRule.php
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	<?php

	final class ArcanistKeywordCasingXHPASTLinterRule
	extends ArcanistXHPASTLinterRule {

	const ID = 40;

	public function getLintName() {
	return pht('Keyword Conventions');
	}

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

	public function process(XHPASTNode $root) {
	$keywords = $root->selectTokensOfTypes(array(
	'T_REQUIRE_ONCE',
	'T_REQUIRE',
	'T_EVAL',
	'T_INCLUDE_ONCE',
	'T_INCLUDE',
	'T_LOGICAL_OR',
	'T_LOGICAL_XOR',
	'T_LOGICAL_AND',
	'T_PRINT',
	'T_INSTANCEOF',
	'T_CLONE',
	'T_NEW',
	'T_EXIT',
	'T_IF',
	'T_ELSEIF',
	'T_ELSE',
	'T_ENDIF',
	'T_ECHO',
	'T_DO',
	'T_WHILE',
	'T_ENDWHILE',
	'T_FOR',
	'T_ENDFOR',
	'T_FOREACH',
	'T_ENDFOREACH',
	'T_DECLARE',
	'T_ENDDECLARE',
	'T_AS',
	'T_SWITCH',
	'T_ENDSWITCH',
	'T_CASE',
	'T_DEFAULT',
	'T_BREAK',
	'T_CONTINUE',
	'T_GOTO',
	'T_FUNCTION',
	'T_CONST',
	'T_RETURN',
	'T_TRY',
	'T_CATCH',
	'T_THROW',
	'T_USE',
	'T_GLOBAL',
	'T_PUBLIC',
	'T_PROTECTED',
	'T_PRIVATE',
	'T_FINAL',
	'T_ABSTRACT',
	'T_STATIC',
	'T_VAR',
	'T_UNSET',
	'T_ISSET',
	'T_EMPTY',
	'T_HALT_COMPILER',
	'T_CLASS',
	'T_INTERFACE',
	'T_EXTENDS',
	'T_IMPLEMENTS',
	'T_LIST',
	'T_ARRAY',
	'T_NAMESPACE',
	'T_INSTEADOF',
	'T_CALLABLE',
	'T_TRAIT',
	'T_YIELD',
	'T_FINALLY',
	));
	foreach ($keywords as $keyword) {
	$value = $keyword->getValue();

	if ($value != strtolower($value)) {
	$this->raiseLintAtToken(
	$keyword,
	pht(
	'Convention: spell keyword `%s` as `%s`.',
	$value,
	strtolower($value)),
	strtolower($value));
	}
	}

	$symbols = $root->selectDescendantsOfType('n_SYMBOL_NAME');
	foreach ($symbols as $symbol) {
	static $interesting_symbols = array(
	'false' => true,
	'null' => true,
	'true' => true,
	);

	$symbol_name = $symbol->getConcreteString();

	if ($symbol->getParentNode()->getTypeName() == 'n_FUNCTION_CALL') {
	continue;
	}

	if (idx($interesting_symbols, strtolower($symbol_name))) {
	if ($symbol_name != strtolower($symbol_name)) {
	$this->raiseLintAtNode(
	$symbol,
	pht(
	'Convention: spell keyword `%s` as `%s`.',
	$symbol_name,
	strtolower($symbol_name)),
	strtolower($symbol_name));
	}
	}
	}

	$magic_constants = $root->selectTokensOfTypes(array(
	'T_CLASS_C',
	'T_METHOD_C',
	'T_FUNC_C',
	'T_LINE',
	'T_FILE',
	'T_NS_C',
	'T_DIR',
	'T_TRAIT_C',
	));

	foreach ($magic_constants as $magic_constant) {
	$value = $magic_constant->getValue();

	if ($value != strtoupper($value)) {
	$this->raiseLintAtToken(
	$magic_constant,
	pht('Magic constants should be uppercase.'),
	strtoupper($value));
	}
	}
	}

	}

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