Benchmark::color() - Code Metrics - Inspection of "Merge branch 'master' into develop" - alecrabbit/php-simple-profiler - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — develop ( c56c81...f741b1 )

by Alec

created 2019-01-28 16:29 UTC

Benchmark::color() A

↳ Parent: Benchmark

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	2
nc	1
nop	0
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php

namespace AlecRabbit\Tools;

use AlecRabbit\Exception\InvalidStyleException;
use AlecRabbit\Rewindable;
use AlecRabbit\Tools\Contracts\BenchmarkInterface;
use AlecRabbit\Tools\Internal\BenchmarkFunction;
use AlecRabbit\Tools\Reports\Contracts\ReportableInterface;
use AlecRabbit\Tools\Reports\Factory;
use AlecRabbit\Tools\Reports\Formatters\Helper;
use AlecRabbit\Tools\Reports\Traits\Reportable;
use AlecRabbit\Tools\Traits\BenchmarkFields;
use function AlecRabbit\brackets;
use function AlecRabbit\typeOf;

class Benchmark implements BenchmarkInterface, ReportableInterface
{
    protected const PG_WIDTH = 60;
    protected const ADDED = 'added';
    protected const BENCHMARKED = 'benchmarked';

    use BenchmarkFields, Reportable;

    /** @var int */
    private $namingIndex = 1;
    /** @var Rewindable */
    private $rewindable;
    /** @var int */
    private $iterations;
    /** @var null|string */
    private $comment;
    /** @var bool */
    private $verbose;
    /** @var int */
    private $dots;
    /** @var array */
    private $names;
    /** @var string|null */
    private $humanReadableName;
    /** @var int */
    private $iterationsToBench;

    /**
     * Benchmark constructor.
     * @param int $iterations
     */
    public function __construct(int $iterations = 1000)
    {
        $this->iterations = $iterations;
        $this->reset();
    }

    /**
     * Resets Benchmark object clear
     */
    public function reset(): void
    {
        $this->names = [];
        $this->humanReadableName = null;
        $this->dots = 0;
        $this->verbose = false;
        $this->rewindable =
            new Rewindable(
                function (int $iterations, int $i = 1): \Generator {
                    while ($i <= $iterations) {
                        yield $i++;
                    }
                },
                $this->iterations
            );
        $this->resetFields();
        $this->resetReportObject();
    }

    /**
     * Launch benchmarking
     * @param bool $printReport
     * @throws InvalidStyleException
     */
    public function run(bool $printReport = false): void
    {
        if ($this->verbose) {
            echo
            sprintf(
                'Running benchmarks(Functions: %s, Repeat: %s):',
                $this->profiler->counter(self::ADDED)->getValue(),
                $this->iterations
            );
            echo PHP_EOL;
        }
        $this->execute();

        if ($this->verbose) {
            $this->erase();
            echo ' 100%' . PHP_EOL;
            echo '  λ   Done!' . PHP_EOL;
        }

        if ($printReport) {
            echo PHP_EOL;
            echo (string)$this->getReport();
            echo PHP_EOL;
        }
    }

    /**
     * Benchmarking
     */
    private function execute(): void
    {
        /** @var  BenchmarkFunction $f */
        foreach ($this->functions as $name => $f) {
            $function = $f->getFunction();
            $args = $f->getArgs();
            $this->prepareResult($f, $function, $args);
            $timer = $f->getTimer();
            if ($f->getException()) {
                $timer->check();
                $this->iterationsToBench -= $this->iterations;
                continue;
            }
            foreach ($this->rewindable as $iteration) {
                $this->bench($timer, $function, $args, $iteration);
            }
            $this->profiler->counter(self::BENCHMARKED)->bump();
        }
    }

    /**
     * @param BenchmarkFunction $f
     * @param callable $function
     * @param array $args
     */
    private function prepareResult(BenchmarkFunction $f, callable $function, array $args): void
    {
        try {
            $result = $function(...$args);
        } catch (\Throwable $e) {
            $this->exceptionMessages[$f->getIndexedName()] = $result = brackets(typeOf($e)) . ': ' . $e->getMessage();
            $this->exceptions[$f->getIndexedName()] = $e;
            $f->setException($e);
        }
        $f->setResult($result);
    }

    /**
     * @param Timer $timer
     * @param callable $function
     * @param array $args
     * @param int $iteration
     */
    private function bench(Timer $timer, callable $function, array $args, int $iteration): void
    {
        $timer->start();
        $function(...$args);
        $timer->check($iteration);
        $this->progress();
    }

    private function progress(): void
    {
        if ($this->verbose && 1 === ++$this->totalIterations % 5000) {
            $this->erase();
            echo '.';
            $a =
                str_pad(
                    Helper::percent($this->totalIterations / $this->iterationsToBench),
                    6,
                    ' ',
                    STR_PAD_LEFT
                );
            echo $a;
            if (++$this->dots > static::PG_WIDTH) {
                echo PHP_EOL;
                $this->dots = 0;
            }
        }
    }

    private function erase(): void
    {
        echo "\e[6D";
    }

    /**
     * @return Benchmark
     */
    public function verbose(): self
    {
        $this->verbose = true;
        return $this;
    }

    /**
     * @return Benchmark
     */
    public function color(): self
    {
        Factory::enableColour(true);
        return $this;
    }

    /**
     * @param callable $func
     * @param mixed ...$args
     */
    public function addFunction($func, ...$args): void
    {
        if (!\is_callable($func, false, $name)) {
            throw new \InvalidArgumentException(
                sprintf(
                    '\'%s\' is NOT callable. Function must be callable. Type of "%s" provided instead.',
                    $name,
                    typeOf($func)
                )
            );
        }
        $function =
            new BenchmarkFunction(
                $func,
                $this->refineName($func, $name),
                $this->namingIndex++,
                $args,
                $this->comment,
                $this->humanReadableName
            );
        $this->functions[$function->enumeratedName()] = $function;
        $this->humanReadableName = null;
        $this->comment = null;
        $this->profiler->counter(self::ADDED)->bump();
        $this->iterationsToBench += $this->iterations;
    }

    /**
     * @param callable $func
     * @param string $name
     * @return string
     */
    private function refineName($func, $name): string
    {
        if ($func instanceof \Closure) {
            $name = 'λ';
        }
        return $name;
    }

    /**
     * @param string $comment
     * @return Benchmark
     */
    public function withComment(string $comment): self
    {
        $this->comment = $comment;
        return $this;
    }

    /**
     * @param string $name
     * @return Benchmark
     */
    public function useName(string $name): self
    {
        if (in_array($name, $this->names, true)) {
            throw new \InvalidArgumentException(sprintf('Name "%s" is not unique', $name));
        }
        $this->names[] = $name;
        $this->humanReadableName = $name;
        return $this;
    }

    /**
     * @return Benchmark
     */
    public function returnResults(): self
    {
        $this->withResults = true;
        return $this;
    }

    /**
     * @return string
     * @throws \Throwable
     */
    public function elapsed(): string
    {
        $theme = Factory::getThemedObject();
        return
            sprintf(
                'Done in: %s',
                $theme->yellow($this->getProfiler()->timer()->elapsed())
            );
    }

    /**
     * {@inheritdoc}
     */
    protected function prepareForReport(): void
    {
        $this->getProfiler()->getReport();
    }
}


1		<?php
2
3		namespace AlecRabbit\Tools;
4
5		use AlecRabbit\Exception\InvalidStyleException;
6		use AlecRabbit\Rewindable;
7		use AlecRabbit\Tools\Contracts\BenchmarkInterface;
8		use AlecRabbit\Tools\Internal\BenchmarkFunction;
9		use AlecRabbit\Tools\Reports\Contracts\ReportableInterface;
10		use AlecRabbit\Tools\Reports\Factory;
11		use AlecRabbit\Tools\Reports\Formatters\Helper;
12		use AlecRabbit\Tools\Reports\Traits\Reportable;
13		use AlecRabbit\Tools\Traits\BenchmarkFields;
14		use function AlecRabbit\brackets;
15		use function AlecRabbit\typeOf;
16
17		class Benchmark implements BenchmarkInterface, ReportableInterface
18		{
19		protected const PG_WIDTH = 60;
20		protected const ADDED = 'added';
21		protected const BENCHMARKED = 'benchmarked';
22
23		use BenchmarkFields, Reportable;
24
25		/** @var int */
26		private $namingIndex = 1;
27		/** @var Rewindable */
28		private $rewindable;
29		/** @var int */
30		private $iterations;
31		/** @var null\|string */
32		private $comment;
33		/** @var bool */
34		private $verbose;
35		/** @var int */
36		private $dots;
37		/** @var array */
38		private $names;
39		/** @var string\|null */
40		private $humanReadableName;
41		/** @var int */
42		private $iterationsToBench;
43
44		/**
45		* Benchmark constructor.
46		* @param int $iterations
47		*/
48	5	public function __construct(int $iterations = 1000)
49		{
50	5	$this->iterations = $iterations;
51	5	$this->reset();
52	5	}
53
54		/**
55		* Resets Benchmark object clear
56		*/
57	5	public function reset(): void
58		{
59	5	$this->names = [];
60	5	$this->humanReadableName = null;
61	5	$this->dots = 0;
62	5	$this->verbose = false;
63	5	$this->rewindable =
64	5	new Rewindable(
65		function (int $iterations, int $i = 1): \Generator {
66	2	while ($i <= $iterations) {
67	2	yield $i++;
68		}
69	5	},
70	5	$this->iterations
71		);
72	5	$this->resetFields();
73	5	$this->resetReportObject();
74	5	}
75
76		/**
77		* Launch benchmarking
78		* @param bool $printReport
79		* @throws InvalidStyleException
80		*/
81	2	public function run(bool $printReport = false): void
82		{
83	2	if ($this->verbose) {
84		echo
85	1	sprintf(
86	1	'Running benchmarks(Functions: %s, Repeat: %s):',
87	1	$this->profiler->counter(self::ADDED)->getValue(),
88	1	$this->iterations
89		);
90	1	echo PHP_EOL;
91		}
92	2	$this->execute();
93
94	2	if ($this->verbose) {
95	1	$this->erase();
96	1	echo ' 100%' . PHP_EOL;
97	1	echo ' λ Done!' . PHP_EOL;
98		}
99
100	2	if ($printReport) {
101	1	echo PHP_EOL;
102	1	echo (string)$this->getReport();
103	1	echo PHP_EOL;
104		}
105	2	}
106
107		/**
108		* Benchmarking
109		*/
110	2	private function execute(): void
111		{
112		/** @var BenchmarkFunction $f */
113	2	foreach ($this->functions as $name => $f) {
114	2	$function = $f->getFunction();
115	2	$args = $f->getArgs();
116	2	$this->prepareResult($f, $function, $args);
117	2	$timer = $f->getTimer();
118	2	if ($f->getException()) {
119	1	$timer->check();
120	1	$this->iterationsToBench -= $this->iterations;
121	1	continue;
122		}
123	2	foreach ($this->rewindable as $iteration) {
124	2	$this->bench($timer, $function, $args, $iteration);
125		}
126	2	$this->profiler->counter(self::BENCHMARKED)->bump();
127		}
128	2	}
129
130		/**
131		* @param BenchmarkFunction $f
132		* @param callable $function
133		* @param array $args
134		*/
135	2	private function prepareResult(BenchmarkFunction $f, callable $function, array $args): void
136		{
137		try {
138	2	$result = $function(...$args);
139	1	} catch (\Throwable $e) {
140	1	$this->exceptionMessages[$f->getIndexedName()] = $result = brackets(typeOf($e)) . ': ' . $e->getMessage();
141	1	$this->exceptions[$f->getIndexedName()] = $e;
142	1	$f->setException($e);
143		}
144	2	$f->setResult($result);
145	2	}
146
147		/**
148		* @param Timer $timer
149		* @param callable $function
150		* @param array $args
151		* @param int $iteration
152		*/
153	2	private function bench(Timer $timer, callable $function, array $args, int $iteration): void
154		{
155	2	$timer->start();
156	2	$function(...$args);
157	2	$timer->check($iteration);
158	2	$this->progress();
159	2	}
160
161	2	private function progress(): void
162		{
163	2	if ($this->verbose && 1 === ++$this->totalIterations % 5000) {
164	1	$this->erase();
165	1	echo '.';
166		$a =
167	1	str_pad(
168	1	Helper::percent($this->totalIterations / $this->iterationsToBench),
169	1	6,
170	1	' ',
171	1	STR_PAD_LEFT
172		);
173	1	echo $a;
174	1	if (++$this->dots > static::PG_WIDTH) {
175		echo PHP_EOL;
176		$this->dots = 0;
177		}
178		}
179	2	}
180
181	1	private function erase(): void
182		{
183	1	echo "\e[6D";
184	1	}
185
186		/**
187		* @return Benchmark
188		*/
189	1	public function verbose(): self
190		{
191	1	$this->verbose = true;
192	1	return $this;
193		}
194
195		/**
196		* @return Benchmark
197		*/
198	2	public function color(): self
199		{
200	2	Factory::enableColour(true);
201	2	return $this;
202		}
203
204		/**
205		* @param callable $func
206		* @param mixed ...$args
207		*/
208	3	public function addFunction($func, ...$args): void
209		{
210	3	if (!\is_callable($func, false, $name)) {
211	1	throw new \InvalidArgumentException(
212	1	sprintf(
213	1	'\'%s\' is NOT callable. Function must be callable. Type of "%s" provided instead.',
214	1	$name,
215	1	typeOf($func)
216		)
217		);
218		}
219		$function =
220	2	new BenchmarkFunction(
221	2	$func,
222	2	$this->refineName($func, $name),
223	2	$this->namingIndex++,
224	2	$args,
225	2	$this->comment,
226	2	$this->humanReadableName
227		);
228	2	$this->functions[$function->enumeratedName()] = $function;
229	2	$this->humanReadableName = null;
230	2	$this->comment = null;
231	2	$this->profiler->counter(self::ADDED)->bump();
232	2	$this->iterationsToBench += $this->iterations;
233	2	}
234
235		/**
236		* @param callable $func
237		* @param string $name
238		* @return string
239		*/
240	2	private function refineName($func, $name): string
241		{
242	2	if ($func instanceof \Closure) {
243	2	$name = 'λ';
244		}
245	2	return $name;
246		}
247
248		/**
249		* @param string $comment
250		* @return Benchmark
251		*/
252	2	public function withComment(string $comment): self
253		{
254	2	$this->comment = $comment;
255	2	return $this;
256		}
257
258		/**
259		* @param string $name
260		* @return Benchmark
261		*/
262		public function useName(string $name): self
263		{
264		if (in_array($name, $this->names, true)) {
265		throw new \InvalidArgumentException(sprintf('Name "%s" is not unique', $name));
266		}
267		$this->names[] = $name;
268		$this->humanReadableName = $name;
269		return $this;
270		}
271
272		/**
273		* @return Benchmark
274		*/
275	1	public function returnResults(): self
276		{
277	1	$this->withResults = true;
278	1	return $this;
279		}
280
281		/**
282		* @return string
283		* @throws \Throwable
284		*/
285	1	public function elapsed(): string
286		{
287	1	$theme = Factory::getThemedObject();
288		return
289	1	sprintf(
290	1	'Done in: %s',
291	1	$theme->yellow($this->getProfiler()->timer()->elapsed())
292		);
293		}
294
295		/**
296		* {@inheritdoc}
297		*/
298	3	protected function prepareForReport(): void
299		{
300	3	$this->getProfiler()->getReport();
301	3	}
302		}
303

alecrabbit / php-simple-profiler

Push — develop ( c56c81...f741b1 )

Benchmark::color() A

Complexity

Size

Duplication

Code Coverage

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