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<?php namespace Clockwork\Helpers; // A stack trace class StackTrace { use Concerns\ResolvesViewName; protected $frames; protected $basePath; protected $vendorPath; // Capture a new stack trace, accepts an array of options, "arguments" to include arguments in the trace and "limit" // to limit the trace length public static function get($options = []) { $backtraceOptions = isset($options['arguments']) ? DEBUG_BACKTRACE_PROVIDE_OBJECT : DEBUG_BACKTRACE_PROVIDE_OBJECT | DEBUG_BACKTRACE_IGNORE_ARGS; $limit = isset($options['limit']) ? $options['limit'] : 0; return static::from(debug_backtrace($backtraceOptions, $limit)); } // Create a stack trace from an existing debug_backtrace output public static function from(array $trace) { $basePath = static::resolveBasePath(); $vendorPath = static::resolveVendorPath(); return new static(array_map(function ($frame, $index) use ($basePath, $vendorPath, $trace) { return new StackFrame( static::fixCallUserFuncFrame($frame, $trace, $index), $basePath, $vendorPath ); }, $trace, array_keys($trace)), $basePath, $vendorPath); } public function __construct(array $frames, $basePath, $vendorPath) { $this->frames = $frames; $this->basePath = $basePath; $this->vendorPath = $vendorPath; } // Get all frames public function frames() { return $this->frames; } // Get the first frame, optionally filtered by a stack filter or a closure public function first($filter = null) { if (! $filter) return reset($this->frames); if ($filter instanceof StackFilter) $filter = $filter->closure(); foreach ($this->frames as $frame) { if ($filter($frame)) return $frame; } } // Get the last frame, optionally filtered by a stack filter or a closure public function last($filter = null) { if (! $filter) return $this->frames[count($this->frames) - 1]; if ($filter instanceof StackFilter) $filter = $filter->closure(); foreach (array_reverse($this->frames) as $frame) { if ($filter($frame)) return $frame; } } // Get trace filtered by a stack filter or a closure public function filter($filter = null) { if ($filter instanceof StackFilter) $filter = $filter->closure(); return $this->copy(array_values(array_filter($this->frames, $filter))); } // Get trace skipping a number of frames or frames matching a stack filter or a closure public function skip($count = null) { if ($count instanceof StackFilter) $count = $count->closure(); if ($count instanceof \Closure) $count = array_search($this->first($count), $this->frames); return $this->copy(array_slice($this->frames, $count)); } // Get trace with a number of frames from the top public function limit($count = null) { return $this->copy(array_slice($this->frames, 0, $count)); } // Get a copy of the trace public function copy($frames = null) { return new static($frames ?: $this->frames, $this->basePath, $this->vendorPath); } protected static function resolveBasePath() { return substr(__DIR__, 0, strpos(__DIR__, DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR)); } protected static function resolveVendorPath() { return static::resolveBasePath() . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR; } // Fixes call_user_func stack frames missing file and line protected static function fixCallUserFuncFrame($frame, array $trace, $index) { if (isset($frame['file'])) return $frame; $nextFrame = isset($trace[$index + 1]) ? $trace[$index + 1] : null; if (! $nextFrame || ! in_array($nextFrame['function'], [ 'call_user_func', 'call_user_func_array' ])) return $frame; $frame['file'] = $nextFrame['file']; $frame['line'] = $nextFrame['line']; return $frame; } }
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