ArcanistUnaryPrefixExpressionSpacingXHPASTLinterRule.php
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ArcanistUnaryPrefixExpressionSpacingXHPASTLinterRule.php
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	<?php

	final class ArcanistUnaryPrefixExpressionSpacingXHPASTLinterRule
	extends ArcanistXHPASTLinterRule {

	const ID = 73;

	public function getLintName() {
	return pht('Space After Unary Prefix Operator');
	}

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

	public function process(XHPASTNode $root) {
	$expressions = $root->selectDescendantsOfType('n_UNARY_PREFIX_EXPRESSION');

	foreach ($expressions as $expression) {
	$operator = $expression->getChildOfType(0, 'n_OPERATOR');
	$operator_value = $operator->getConcreteString();
	list($before, $after) = $operator->getSurroundingNonsemanticTokens();

	switch (strtolower($operator_value)) {
	case 'clone':
	case 'echo':
	case 'print':
	break;

	default:
	if (!empty($after)) {
	$this->raiseLintAtOffset(
	$operator->getOffset() + strlen($operator->getConcreteString()),
	pht(
	'Unary prefix operators should not be followed by whitespace.'),
	implode('', mpull($after, 'getValue')),
	'');
	}
	break;
	}
	}
	}

	}

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