ArcanistInvalidOctalNumericScalarXHPASTLinterRule.php
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ArcanistInvalidOctalNumericScalarXHPASTLinterRule.php
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	<?php

	final class ArcanistInvalidOctalNumericScalarXHPASTLinterRule
	extends ArcanistXHPASTLinterRule {

	const ID = 125;

	public function getLintName() {
	return pht('Invalid Octal Numeric Scalar');
	}

	public function process(XHPASTNode $root) {
	$octals = $this->getOctalNumericScalars($root);

	foreach ($octals as $octal) {
	if (!preg_match('/^0[0-7]*$/', $octal->getConcreteString())) {
	$this->raiseLintAtNode(
	$octal,
	pht(
	'Invalid octal numeric scalar. `%s` is not a '.
	'valid octal and will be interpreted as `%d`.',
	$octal->getConcreteString(),
	intval($octal->getConcreteString(), 8)));
	}
	}
	}

	private function getOctalNumericScalars(XHPASTNode $root) {
	$numeric_scalars = $root->selectDescendantsOfType('n_NUMERIC_SCALAR');
	$octal_numeric_scalars = array();

	foreach ($numeric_scalars as $numeric_scalar) {
	$number = $numeric_scalar->getConcreteString();

	if (preg_match('/^0\d+$/', $number)) {
	$octal_numeric_scalars[] = $numeric_scalar;
	}
	}

	return $octal_numeric_scalars;

	}

	}

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