Dumper::renderValue() - Code Metrics - Inspection of "Actualize spiral/dumper tests" - spiral/framework - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 67aa31...d47bdf )

by Kirill

created 2020-08-18 08:22 UTC

Dumper::renderValue() C

↳ Parent: Dumper

Complexity

Conditions	12
Paths	20

Size

Total Lines	60
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	28
c	1
b	0
f	0
dl	0
loc	60
rs	6.9666
cc	12
nc	20
nop	5

How to fix Long Method Complexity

<?php

/**
 * Spiral Framework.
 *
 * @license   MIT
 * @author    Anton Titov (Wolfy-J)
 */

declare(strict_types=1);

namespace Spiral\Debug;

use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Spiral\Debug\Exception\DumperException;
use Spiral\Debug\Renderer\ConsoleRenderer;
use Spiral\Debug\Renderer\HtmlRenderer;
use Spiral\Debug\Renderer\PlainRenderer;

/**
 * Renderer exports the content of the given variable, array or object into human friendly form.
 */
class Dumper implements LoggerAwareInterface
{
    use LoggerAwareTrait;

    /**
     * Directives for dump output forwarding.
     */
    public const OUTPUT            = 0;
    public const RETURN            = 1;
    public const LOGGER            = 2;
    public const ERROR_LOG         = 3;
    public const OUTPUT_CLI        = 4;
    public const OUTPUT_CLI_COLORS = 5;

    /** @var int */
    private $maxLevel = 12;

    /**
     * Default render associations.
     *
     * @var array|RendererInterface[]
     */
    private $targets = [
        self::OUTPUT            => HtmlRenderer::class,
        self::OUTPUT_CLI        => PlainRenderer::class,
        self::OUTPUT_CLI_COLORS => ConsoleRenderer::class,
        self::RETURN            => HtmlRenderer::class,
        self::LOGGER            => PlainRenderer::class,
        self::ERROR_LOG         => PlainRenderer::class,
    ];

    /**
     * @param LoggerInterface $logger
     */
    public function __construct(LoggerInterface $logger = null)
    {
        if (!empty($logger)) {
            $this->setLogger($logger);
        }
    }

    /**
     * Set max nesting level for value dumping.
     *
     * @param int $maxLevel
     */
    public function setMaxLevel(int $maxLevel): void
    {
        $this->maxLevel = max($maxLevel, 1);
    }

    /**
     * Dump given value into target output.
     *
     * @param mixed $value
     * @param int   $target Possible options: OUTPUT, RETURN, ERROR_LOG, LOGGER.
     * @return string
     * @throws DumperException
     */
    public function dump($value, int $target = self::OUTPUT): ?string
    {
        $r = $this->getRenderer($target);
        $dump = $r->wrapContent($this->renderValue($r, $value));

        switch ($target) {
            case self::OUTPUT:
                echo $dump;
                break;

            case self::RETURN:
                return $dump;

            case self::LOGGER:
                if ($this->logger == null) {
                    throw new DumperException('Unable to dump value to log, no associated LoggerInterface');
                }
                $this->logger->debug($dump);
                break;

            case self::ERROR_LOG:
                error_log($dump, 0);
                break;
        }

        return null;
    }

    /**
     * Associate rendered with given output target.
     *
     * @param int               $target
     * @param RendererInterface $renderer
     * @return Dumper
     * @throws DumperException
     */
    public function setRenderer(int $target, RendererInterface $renderer): Dumper
    {
        if (!isset($this->targets[$target])) {
            throw new DumperException(sprintf('Undefined dump target %d', $target));
        }

        $this->targets[$target] = $renderer;

        return $this;
    }

    /**
     * Returns renderer instance associated with given output target. Automatically detects CLI mode, RR mode and
     * colorization support.
     *
     * @param int $target
     * @return RendererInterface
     * @throws DumperException
     */
    private function getRenderer(int $target): RendererInterface
    {
        if ($target == self::OUTPUT && System::isCLI()) {
            if (System::isColorsSupported(STDOUT)) {
                $target = self::OUTPUT_CLI_COLORS;
            } else {
                $target = self::OUTPUT_CLI;
            }
        }

        if (!isset($this->targets[$target])) {
            throw new DumperException(sprintf('Undefined dump target %d', $target));
        }

        if (is_string($this->targets[$target])) {
            $this->targets[$target] = new $this->targets[$target]();
        }

        return $this->targets[$target];
    }

    /**
     * Variable dumper. This is the oldest spiral function originally written in 2007. :).
     *
     * @param RendererInterface $r          Render to style value content.
     * @param mixed             $value
     * @param string            $name       Variable name, internal.
     * @param int               $level      Dumping level, internal.
     * @param bool              $hideHeader Hide array/object header, internal.
     *
     * @return string
     */
    private function renderValue(
        RendererInterface $r,
        $value,
        string $name = '',
        int $level = 0,
        bool $hideHeader = false
    ): string {
        if (!$hideHeader && !empty($name)) {
            $header = $r->indent($level) . $r->apply($name, 'name') . $r->apply(' = ', 'syntax', '=');
        } else {
            $header = $r->indent($level);
        }

        if ($level > $this->maxLevel) {
            //Renderer is not reference based, we can't dump too deep values
            return $r->indent($level) . $r->apply('-too deep-', 'maxLevel') . "\n";
        }

        $type = strtolower(gettype($value));

        if ($type == 'array') {
            return $header . $this->renderArray($r, $value, $level, $hideHeader);
        }

        if ($type == 'object') {
            return $header . $this->renderObject($r, $value, $level, $hideHeader);
        }

        if ($type == 'resource') {
            //No need to dump resource value
            $element = get_resource_type($value) . ' resource ';

            return $header . $r->apply($element, 'type', 'resource') . "\n";
        }

        //Value length
        $length = strlen((string)$value);

        //Including type size
        $header .= $r->apply("{$type}({$length})", 'type', $type);

        $element = null;
        switch ($type) {
            case 'string':
                $element = $r->escapeStrings() ? htmlspecialchars($value) : $value;
                break;

            case 'boolean':
                $element = ($value ? 'true' : 'false');
                break;

            default:
                if ($value !== null) {
                    //Not showing null value, type is enough
                    $element = var_export($value, true);
                }
        }

        //Including value
        return $header . ' ' . $r->apply($element, 'value', $type) . "\n";
    }

    /**
     * @param RendererInterface $r
     * @param array             $array
     * @param int               $level
     * @param bool              $hideHeader
     *
     * @return string
     */
    private function renderArray(RendererInterface $r, array $array, int $level, bool $hideHeader = false): string
    {
        if (!$hideHeader) {
            $count = count($array);

            //Array size and scope
            $output = $r->apply("array({$count})", 'type', 'array') . "\n";
            $output .= $r->indent($level) . $r->apply('[', 'syntax', '[') . "\n";
        } else {
            $output = '';
        }

        foreach ($array as $key => $value) {
            if (!is_numeric($key)) {
                if (is_string($key) && $r->escapeStrings()) {
                    $key = htmlspecialchars($key);
                }

                $key = "'{$key}'";
            }

            $output .= $this->renderValue($r, $value, "[{$key}]", $level + 1);
        }

        if (!$hideHeader) {
            //Closing array scope
            $output .= $r->indent($level) . $r->apply(']', 'syntax', ']') . "\n";
        }

        return $output;
    }

    /**
     * @param RendererInterface $r
     * @param object            $value
     * @param int               $level
     * @param bool              $hideHeader
     * @param string            $class
     *
     * @return string
     */
    private function renderObject(
        RendererInterface $r,
        $value,
        int $level,
        bool $hideHeader = false,
        string $class = ''
    ): string {
        if (!$hideHeader) {
            $type = ($class ?: get_class($value)) . ' object ';

            $header = $r->apply($type, 'type', 'object') . "\n";
            $header .= $r->indent($level) . $r->apply('(', 'syntax', '(') . "\n";
        } else {
            $header = '';
        }

        //Let's use method specifically created for dumping
        if (method_exists($value, '__debugInfo') || $value instanceof \Closure) {
            if ($value instanceof \Closure) {
                $debugInfo = $this->describeClosure($value);
            } else {
                $debugInfo = $value->__debugInfo();
            }

            if (is_array($debugInfo)) {
                //Pretty view
                $debugInfo = (object)$debugInfo;
            }

            if (is_object($debugInfo)) {
                //We are not including syntax elements here
                return $this->renderObject($r, $debugInfo, $level, false, get_class($value));
            }

            return $header
                . $this->renderValue($r, $debugInfo, '', $level + (is_scalar($value)), true)
                . $r->indent($level) . $r->apply(')', 'syntax', ')') . "\n";
        }

        $refection = new \ReflectionObject($value);

        $output = '';
        foreach ($refection->getProperties() as $property) {
            $output .= $this->renderProperty($r, $value, $property, $level);
        }

        //Header, content, footer
        return $header . $output . $r->indent($level) . $r->apply(')', 'syntax', ')') . "\n";
    }

    /**
     * @param RendererInterface   $r
     * @param object              $value
     * @param \ReflectionProperty $p
     * @param int                 $level
     *
     * @return string
     */
    private function renderProperty(RendererInterface $r, $value, \ReflectionProperty $p, int $level): string
    {
        if ($p->isStatic()) {
            return '';
        }

        if (
            !($value instanceof \stdClass)
            && is_string($p->getDocComment())
            && strpos($p->getDocComment(), '@internal') !== false
        ) {
            // Memory loop while reading doc comment for stdClass variables?
            // Report a PHP bug about treating comment INSIDE property declaration as doc comment.
            return '';
        }

        //Property access level
        $access = $this->getAccess($p);

        //To read private and protected properties
        $p->setAccessible(true);

        if ($value instanceof \stdClass) {
            $name = $r->apply($p->getName(), 'dynamic');
        } else {
            //Property name includes access level
            $name = $p->getName() . $r->apply(':' . $access, 'access', $access);
        }

        return $this->renderValue($r, $p->getValue($value), $name, $level + 1);
    }

    /**
     * Fetch information about the closure.
     *
     * @param \Closure $closure
     * @return array
     */
    private function describeClosure(\Closure $closure): array
    {
        try {
            $r = new \ReflectionFunction($closure);
        } catch (\ReflectionException $e) {
            return ['closure' => 'unable to resolve'];
        }

        return [
            'name' => $r->getName() . " (lines {$r->getStartLine()}:{$r->getEndLine()})",
            'file' => $r->getFileName(),
            'this' => $r->getClosureThis()
        ];
    }

    /**
     * Property access level label.
     *
     * @param \ReflectionProperty $p
     *
     * @return string
     */
    private function getAccess(\ReflectionProperty $p): string
    {
        if ($p->isPrivate()) {
            return 'private';
        } elseif ($p->isProtected()) {
            return 'protected';
        }

        return 'public';
    }
}


1			<?php
2
3			/**
4			* Spiral Framework.
5			*
6			* @license MIT
7			* @author Anton Titov (Wolfy-J)
8			*/
9
10			declare(strict_types=1);
11
12			namespace Spiral\Debug;
13
14			use Psr\Log\LoggerAwareInterface;
15			use Psr\Log\LoggerAwareTrait;
16			use Psr\Log\LoggerInterface;
17			use Spiral\Debug\Exception\DumperException;
18			use Spiral\Debug\Renderer\ConsoleRenderer;
19			use Spiral\Debug\Renderer\HtmlRenderer;
20			use Spiral\Debug\Renderer\PlainRenderer;
21
22			/**
23			* Renderer exports the content of the given variable, array or object into human friendly form.
24			*/
25			class Dumper implements LoggerAwareInterface
26			{
27			use LoggerAwareTrait;
28
29			/**
30			* Directives for dump output forwarding.
31			*/
32			public const OUTPUT = 0;
33			public const RETURN = 1;
34			public const LOGGER = 2;
35			public const ERROR_LOG = 3;
36			public const OUTPUT_CLI = 4;
37			public const OUTPUT_CLI_COLORS = 5;
38
39			/** @var int */
40			private $maxLevel = 12;
41
42			/**
43			* Default render associations.
44			*
45			* @var array\|RendererInterface[]
46			*/
47			private $targets = [
48			self::OUTPUT => HtmlRenderer::class,
49			self::OUTPUT_CLI => PlainRenderer::class,
50			self::OUTPUT_CLI_COLORS => ConsoleRenderer::class,
51			self::RETURN => HtmlRenderer::class,
52			self::LOGGER => PlainRenderer::class,
53			self::ERROR_LOG => PlainRenderer::class,
54			];
55
56			/**
57			* @param LoggerInterface $logger
58			*/
59			public function __construct(LoggerInterface $logger = null)
60			{
61			if (!empty($logger)) {
62			$this->setLogger($logger);
63			}
64			}
65
66			/**
67			* Set max nesting level for value dumping.
68			*
69			* @param int $maxLevel
70			*/
71			public function setMaxLevel(int $maxLevel): void
72			{
73			$this->maxLevel = max($maxLevel, 1);
74			}
75
76			/**
77			* Dump given value into target output.
78			*
79			* @param mixed $value
80			* @param int $target Possible options: OUTPUT, RETURN, ERROR_LOG, LOGGER.
81			* @return string
82			* @throws DumperException
83			*/
84			public function dump($value, int $target = self::OUTPUT): ?string
85			{
86			$r = $this->getRenderer($target);
87			$dump = $r->wrapContent($this->renderValue($r, $value));
88
89			switch ($target) {
90			case self::OUTPUT:
91			echo $dump;
92			break;
93
94			case self::RETURN:
95			return $dump;
96
97			case self::LOGGER:
98			if ($this->logger == null) {
99			throw new DumperException('Unable to dump value to log, no associated LoggerInterface');
100			}
101			$this->logger->debug($dump);
102			break;
103
104			case self::ERROR_LOG:
105			error_log($dump, 0);
106			break;
107			}
108
109			return null;
110			}
111
112			/**
113			* Associate rendered with given output target.
114			*
115			* @param int $target
116			* @param RendererInterface $renderer
117			* @return Dumper
118			* @throws DumperException
119			*/
120			public function setRenderer(int $target, RendererInterface $renderer): Dumper
121			{
122			if (!isset($this->targets[$target])) {
123			throw new DumperException(sprintf('Undefined dump target %d', $target));
124			}
125
126			$this->targets[$target] = $renderer;
127
128			return $this;
129			}
130
131			/**
132			* Returns renderer instance associated with given output target. Automatically detects CLI mode, RR mode and
133			* colorization support.
134			*
135			* @param int $target
136			* @return RendererInterface
137			* @throws DumperException
138			*/
139			private function getRenderer(int $target): RendererInterface
140			{
141			if ($target == self::OUTPUT && System::isCLI()) {
142			if (System::isColorsSupported(STDOUT)) {
143			$target = self::OUTPUT_CLI_COLORS;
144			} else {
145			$target = self::OUTPUT_CLI;
146			}
147			}
148
149			if (!isset($this->targets[$target])) {
150			throw new DumperException(sprintf('Undefined dump target %d', $target));
151			}
152
153			if (is_string($this->targets[$target])) {
154			$this->targets[$target] = new $this->targets[$target]();
155			}
156
157			return $this->targets[$target];
158			}
159
160			/**
161			* Variable dumper. This is the oldest spiral function originally written in 2007. :).
162			*
163			* @param RendererInterface $r Render to style value content.
164			* @param mixed $value
165			* @param string $name Variable name, internal.
166			* @param int $level Dumping level, internal.
167			* @param bool $hideHeader Hide array/object header, internal.
168			*
169			* @return string
170			*/
171			private function renderValue(
172			RendererInterface $r,
173			$value,
174			string $name = '',
175			int $level = 0,
176			bool $hideHeader = false
177			): string {
178			if (!$hideHeader && !empty($name)) {
179			$header = $r->indent($level) . $r->apply($name, 'name') . $r->apply(' = ', 'syntax', '=');
180			} else {
181			$header = $r->indent($level);
182			}
183
184			if ($level > $this->maxLevel) {
185			//Renderer is not reference based, we can't dump too deep values
186			return $r->indent($level) . $r->apply('-too deep-', 'maxLevel') . "\n";
187			}
188
189			$type = strtolower(gettype($value));
190
191			if ($type == 'array') {
192			return $header . $this->renderArray($r, $value, $level, $hideHeader);
193			}
194
195			if ($type == 'object') {
196			return $header . $this->renderObject($r, $value, $level, $hideHeader);
197			}
198
199			if ($type == 'resource') {
200			//No need to dump resource value
201			$element = get_resource_type($value) . ' resource ';
202
203			return $header . $r->apply($element, 'type', 'resource') . "\n";
204			}
205
206			//Value length
207			$length = strlen((string)$value);
208
209			//Including type size
210			$header .= $r->apply("{$type}({$length})", 'type', $type);
211
212			$element = null;
213			switch ($type) {
214			case 'string':
215			$element = $r->escapeStrings() ? htmlspecialchars($value) : $value;
216			break;
217
218			case 'boolean':
219			$element = ($value ? 'true' : 'false');
220			break;
221
222			default:
223			if ($value !== null) {
224			//Not showing null value, type is enough
225			$element = var_export($value, true);
226			}
227			}
228
229			//Including value
230			return $header . ' ' . $r->apply($element, 'value', $type) . "\n";
231			}
232
233			/**
234			* @param RendererInterface $r
235			* @param array $array
236			* @param int $level
237			* @param bool $hideHeader
238			*
239			* @return string
240			*/
241			private function renderArray(RendererInterface $r, array $array, int $level, bool $hideHeader = false): string
242			{
243			if (!$hideHeader) {
244			$count = count($array);
245
246			//Array size and scope
247			$output = $r->apply("array({$count})", 'type', 'array') . "\n";
248			$output .= $r->indent($level) . $r->apply('[', 'syntax', '[') . "\n";
249			} else {
250			$output = '';
251			}
252
253			foreach ($array as $key => $value) {
254			if (!is_numeric($key)) {
255			if (is_string($key) && $r->escapeStrings()) {
256			$key = htmlspecialchars($key);
257			}
258
259			$key = "'{$key}'";
260			}
261
262			$output .= $this->renderValue($r, $value, "[{$key}]", $level + 1);
263			}
264
265			if (!$hideHeader) {
266			//Closing array scope
267			$output .= $r->indent($level) . $r->apply(']', 'syntax', ']') . "\n";
268			}
269
270			return $output;
271			}
272
273			/**
274			* @param RendererInterface $r
275			* @param object $value
276			* @param int $level
277			* @param bool $hideHeader
278			* @param string $class
279			*
280			* @return string
281			*/
282			private function renderObject(
283			RendererInterface $r,
284			$value,
285			int $level,
286			bool $hideHeader = false,
287			string $class = ''
288			): string {
289			if (!$hideHeader) {
290			$type = ($class ?: get_class($value)) . ' object ';
291
292			$header = $r->apply($type, 'type', 'object') . "\n";
293			$header .= $r->indent($level) . $r->apply('(', 'syntax', '(') . "\n";
294			} else {
295			$header = '';
296			}
297
298			//Let's use method specifically created for dumping
299			if (method_exists($value, '__debugInfo') \|\| $value instanceof \Closure) {
300			if ($value instanceof \Closure) {
301			$debugInfo = $this->describeClosure($value);
302			} else {
303			$debugInfo = $value->__debugInfo();
304			}
305
306			if (is_array($debugInfo)) {
307			//Pretty view
308			$debugInfo = (object)$debugInfo;
309			}
310
311			if (is_object($debugInfo)) {
312			//We are not including syntax elements here
313			return $this->renderObject($r, $debugInfo, $level, false, get_class($value));
314			}
315
316			return $header
317			. $this->renderValue($r, $debugInfo, '', $level + (is_scalar($value)), true)
318			. $r->indent($level) . $r->apply(')', 'syntax', ')') . "\n";
319			}
320
321			$refection = new \ReflectionObject($value);
322
323			$output = '';
324			foreach ($refection->getProperties() as $property) {
325			$output .= $this->renderProperty($r, $value, $property, $level);
326			}
327
328			//Header, content, footer
329			return $header . $output . $r->indent($level) . $r->apply(')', 'syntax', ')') . "\n";
330			}
331
332			/**
333			* @param RendererInterface $r
334			* @param object $value
335			* @param \ReflectionProperty $p
336			* @param int $level
337			*
338			* @return string
339			*/
340			private function renderProperty(RendererInterface $r, $value, \ReflectionProperty $p, int $level): string
341			{
342			if ($p->isStatic()) {
343			return '';
344			}
345
346			if (
347			!($value instanceof \stdClass)
348			&& is_string($p->getDocComment())
349			&& strpos($p->getDocComment(), '@internal') !== false
350			) {
351			// Memory loop while reading doc comment for stdClass variables?
352			// Report a PHP bug about treating comment INSIDE property declaration as doc comment.
353			return '';
354			}
355
356			//Property access level
357			$access = $this->getAccess($p);
358
359			//To read private and protected properties
360			$p->setAccessible(true);
361
362			if ($value instanceof \stdClass) {
363			$name = $r->apply($p->getName(), 'dynamic');
364			} else {
365			//Property name includes access level
366			$name = $p->getName() . $r->apply(':' . $access, 'access', $access);
367			}
368
369			return $this->renderValue($r, $p->getValue($value), $name, $level + 1);
370			}
371
372			/**
373			* Fetch information about the closure.
374			*
375			* @param \Closure $closure
376			* @return array
377			*/
378			private function describeClosure(\Closure $closure): array
379			{
380			try {
381			$r = new \ReflectionFunction($closure);
382			} catch (\ReflectionException $e) {
383			return ['closure' => 'unable to resolve'];
384			}
385
386			return [
387			'name' => $r->getName() . " (lines {$r->getStartLine()}:{$r->getEndLine()})",
388			'file' => $r->getFileName(),
389			'this' => $r->getClosureThis()
390			];
391			}
392
393			/**
394			* Property access level label.
395			*
396			* @param \ReflectionProperty $p
397			*
398			* @return string
399			*/
400			private function getAccess(\ReflectionProperty $p): string
401			{
402			if ($p->isPrivate()) {
403			return 'private';
404			} elseif ($p->isProtected()) {
405			return 'protected';
406			}
407
408			return 'public';
409			}
410			}
411

spiral / framework

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Dumper::renderValue() C

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