Your IP : 18.118.30.8
<?php
/**
* This file is part of the Latte (https://latte.nette.org)
* Copyright (c) 2008 David Grudl (https://davidgrudl.com)
*/
declare(strict_types=1);
namespace Latte\Runtime;
use Latte;
use Latte\Engine;
/**
* @internal
*/
class Tracer
{
public static function throw(): void
{
$e = new Latte\RuntimeException('Your location in Latte templates');
$trace = debug_backtrace();
$props = [
'file' => $trace[1]['object']->getName(),
'line' => self::getSourceLine($trace[0]['file'], $trace[0]['line']),
'trace' => self::generateTrace($trace),
];
foreach ($props as $name => $value) {
$ref = new \ReflectionProperty('Exception', $name);
$ref->setAccessible(true);
$ref->setValue($e, $value);
}
throw $e;
}
private static function generateTrace(array $trace): array
{
$res = [];
foreach ($trace as $i => $item) {
$object = $item['object'] ?? null;
if ($object instanceof Template) {
$method = $item['function'] ?? '';
if (Latte\Helpers::startsWith($method, 'block')) {
// begin of block
$comment = (new \ReflectionMethod($object, $method))->getDocComment();
$res[] = [
'function' => preg_match('~(\{.+\})~', $comment, $m) ? $m[1] : '?',
'file' => $object->getName(),
'line' => preg_match('~ on line (\d+)~', $comment, $m) ? (int) $m[1] : 0,
'args' => [], // $L_args is not true, will be added in next step
];
} elseif ($method === 'render' && $object->getReferenceType()) {
// begin of included/extended/... file
$res[] = [
'function' => '{' . $object->getReferenceType() . ' ' . basename($object->getName()) . '}',
'file' => $object->getReferringTemplate()->getName(),
'line' => 0, // will be added in next step
'args' => self::filterParams($object->getParameters()),
];
} elseif ($method === 'renderToContentType') {
// {include file}, extends, embed, sandbox, ...
$res[count($res) - 1]['line'] = self::getSourceLine($item['file'], $item['line']);
} elseif ($method === 'renderBlock' || $method === 'renderBlockParent') {
// {include block}
$res[count($res) - 1]['args'] = self::filterParams($item['args'][1] + $object->getParameters());
if ($method !== 'renderBlock' || isset($item['args'][2])) { // is not {block}
$res[] = [
'function' => '{include ' . ($method === 'renderBlockParent' ? 'parent' : $item['args'][0]) . '}',
'file' => $object->getName(),
'line' => self::getSourceLine($item['file'], $item['line']),
'args' => self::filterParams($item['args'][1]),
];
}
}
} elseif ($object instanceof Engine) {
break;
}
}
return $res;
}
private static function getSourceLine(string $compiledFile, int $line): int
{
if (!is_file($compiledFile)) {
return 0;
}
$line = file($compiledFile)[$line - 1];
return preg_match('~/\* line (\d+) \*/~', $line, $m)
? (int) $m[1]
: 0;
}
private static function filterParams(array $params): array
{
foreach ($params as $key => $foo) {
if (is_string($key) && Latte\Helpers::startsWith($key, 'ʟ_')) {
unset($params[$key]);
}
}
unset($params['_l'], $params['_g']);
return $params;
}
}