Utils::orList() - Code Metrics - webonyx/graphql-php - Measure and Improve Code Quality continuously with Scrutinizer

Utils::orList() A
last analyzed 2020-01-05 17:30 UTC

↳ Parent: Utils

Complexity

Conditions	5
Paths	3

Size

Total Lines	22
Code Lines	15

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	5

Importance

Changes

Metric	Value
eloc	15
dl	0
loc	22
ccs	15
cts	15
cp	1
rs	9.4555
c	0
b	0
f	0
cc	5
nc	3
nop	1
crap	5

<?php

declare(strict_types=1);

namespace GraphQL\Utils;

use ErrorException;
use Exception;
use GraphQL\Error\Error;
use GraphQL\Error\InvariantViolation;
use GraphQL\Error\Warning;
use GraphQL\Language\AST\Node;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\Definition\WrappingType;
use InvalidArgumentException;
use LogicException;
use stdClass;
use Traversable;
use function array_keys;
use function array_map;
use function array_reduce;
use function array_shift;
use function array_slice;
use function array_values;
use function asort;
use function count;
use function dechex;
use function func_get_args;
use function func_num_args;
use function get_class;
use function gettype;
use function is_array;
use function is_int;
use function is_object;
use function is_scalar;
use function is_string;
use function json_encode;
use function levenshtein;
use function max;
use function mb_convert_encoding;
use function mb_strlen;
use function mb_substr;
use function method_exists;
use function ord;
use function pack;
use function preg_match;
use function property_exists;
use function range;
use function restore_error_handler;
use function set_error_handler;
use function sprintf;
use function strtolower;
use function unpack;

class Utils
{
    public static function undefined()
    {
        static $undefined;

        return $undefined ?: $undefined = new stdClass();
    }

    /**
     * Check if the value is invalid
     *
     * @param mixed $value
     *
     * @return bool
     */
    public static function isInvalid($value)
    {
        return self::undefined() === $value;
    }

    /**
     * @param object   $obj
     * @param mixed[]  $vars
     * @param string[] $requiredKeys
     *
     * @return object
     */
    public static function assign($obj, array $vars, array $requiredKeys = [])
    {
        foreach ($requiredKeys as $key) {
            if (! isset($vars[$key])) {
                throw new InvalidArgumentException(sprintf('Key %s is expected to be set and not to be null', $key));
            }
        }

        foreach ($vars as $key => $value) {
            if (! property_exists($obj, $key)) {
                $cls = get_class($obj);
                Warning::warn(
                    sprintf("Trying to set non-existing property '%s' on class '%s'", $key, $cls),
                    Warning::WARNING_ASSIGN
                );
            }
            $obj->{$key} = $value;
        }

        return $obj;
    }

    /**
     * @param mixed|Traversable $traversable
     *
     * @return mixed|null
     */
    public static function find($traversable, callable $predicate)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        foreach ($traversable as $key => $value) {
            if ($predicate($value, $key)) {
                return $value;
            }
        }

        return null;
    }

    /**
     * @param mixed|Traversable $traversable
     *
     * @return mixed[]
     *
     * @throws Exception
     */
    public static function filter($traversable, callable $predicate)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        $result = [];
        $assoc  = false;
        foreach ($traversable as $key => $value) {
            if (! $assoc && ! is_int($key)) {
                $assoc = true;
            }
            if (! $predicate($value, $key)) {
                continue;
            }

            $result[$key] = $value;
        }

        return $assoc ? $result : array_values($result);
    }

    /**
     * @param mixed|Traversable $traversable
     *
     * @return mixed[]
     *
     * @throws Exception
     */
    public static function map($traversable, callable $fn)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        $map = [];
        foreach ($traversable as $key => $value) {
            $map[$key] = $fn($value, $key);
        }

        return $map;
    }

    /**
     * @param mixed|Traversable $traversable
     *
     * @return mixed[]
     *
     * @throws Exception
     */
    public static function mapKeyValue($traversable, callable $fn)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        $map = [];
        foreach ($traversable as $key => $value) {
            [$newKey, $newValue] = $fn($value, $key);
            $map[$newKey]        = $newValue;
        }

        return $map;
    }

    /**
     * @param mixed|Traversable $traversable
     *
     * @return mixed[]
     *
     * @throws Exception
     */
    public static function keyMap($traversable, callable $keyFn)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        $map = [];
        foreach ($traversable as $key => $value) {
            $newKey = $keyFn($value, $key);
            if (! is_scalar($newKey)) {
                continue;
            }

            $map[$newKey] = $value;
        }

        return $map;
    }

    public static function each($traversable, callable $fn)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        foreach ($traversable as $key => $item) {
            $fn($item, $key);
        }
    }

    /**
     * Splits original traversable to several arrays with keys equal to $keyFn return
     *
     * E.g. Utils::groupBy([1, 2, 3, 4, 5], function($value) {return $value % 3}) will output:
     * [
     *    1 => [1, 4],
     *    2 => [2, 5],
     *    0 => [3],
     * ]
     *
     * $keyFn is also allowed to return array of keys. Then value will be added to all arrays with given keys
     *
     * @param mixed[]|Traversable $traversable
     *
     * @return mixed[]
     */
    public static function groupBy($traversable, callable $keyFn)
    {
        self::invariant(
            is_array($traversable) || $traversable instanceof Traversable,
            __METHOD__ . ' expects array or Traversable'
        );

        $grouped = [];
        foreach ($traversable as $key => $value) {
            $newKeys = (array) $keyFn($value, $key);
            foreach ($newKeys as $newKey) {
                $grouped[$newKey][] = $value;
            }
        }

        return $grouped;
    }

    /**
     * @param mixed[]|Traversable $traversable
     *
     * @return mixed[][]
     */
    public static function keyValMap($traversable, callable $keyFn, callable $valFn)
    {
        $map = [];
        foreach ($traversable as $item) {
            $map[$keyFn($item)] = $valFn($item);
        }

        return $map;
    }

    /**
     * @param mixed[] $traversable
     *
     * @return bool
     */
    public static function every($traversable, callable $predicate)
    {
        foreach ($traversable as $key => $value) {
            if (! $predicate($value, $key)) {
                return false;
            }
        }

        return true;
    }

    /**
     * @param mixed[] $traversable
     *
     * @return bool
     */
    public static function some($traversable, callable $predicate)
    {
        foreach ($traversable as $key => $value) {
            if ($predicate($value, $key)) {
                return true;
            }
        }

        return false;
    }

    /**
     * @param bool   $test
     * @param string $message
     */
    public static function invariant($test, $message = '')
    {
        if (! $test) {
            if (func_num_args() > 2) {
                $args = func_get_args();
                array_shift($args);
                $message = sprintf(...$args);
            }
            // TODO switch to Error here
            throw new InvariantViolation($message);
        }
    }

    /**
     * @param Type|mixed $var
     *
     * @return string
     */
    public static function getVariableType($var)
    {
        if ($var instanceof Type) {
            // FIXME: Replace with schema printer call
            if ($var instanceof WrappingType) {
                $var = $var->getWrappedType(true);
            }

            return $var->name;
        }

        return is_object($var) ? get_class($var) : gettype($var);
    }

    /**
     * @param mixed $var
     *
     * @return string
     */
    public static function printSafeJson($var)
    {
        if ($var instanceof stdClass) {
            $var = (array) $var;
        }
        if (is_array($var)) {
            return json_encode($var);
        }
        if ($var === '') {
            return '(empty string)';
        }
        if ($var === null) {
            return 'null';
        }
        if ($var === false) {
            return 'false';
        }
        if ($var === true) {
            return 'true';
        }
        if (is_string($var)) {
            return sprintf('"%s"', $var);
        }
        if (is_scalar($var)) {
            return (string) $var;
        }

        return gettype($var);
    }

    /**
     * @param Type|mixed $var
     *
     * @return string
     */
    public static function printSafe($var)
    {
        if ($var instanceof Type) {
            return $var->toString();
        }
        if (is_object($var)) {
            if (method_exists($var, '__toString')) {
                return (string) $var;
            }

            return 'instance of ' . get_class($var);
        }
        if (is_array($var)) {
            return json_encode($var);
        }
        if ($var === '') {
            return '(empty string)';
        }
        if ($var === null) {
            return 'null';
        }
        if ($var === false) {
            return 'false';
        }
        if ($var === true) {
            return 'true';
        }
        if (is_string($var)) {
            return $var;
        }
        if (is_scalar($var)) {
            return (string) $var;
        }

        return gettype($var);
    }

    /**
     * UTF-8 compatible chr()
     *
     * @param string $ord
     * @param string $encoding
     *
     * @return string
     */
    public static function chr($ord, $encoding = 'UTF-8')
    {
        if ($encoding === 'UCS-4BE') {
            return pack('N', $ord);
        }

        return mb_convert_encoding(self::chr($ord, 'UCS-4BE'), $encoding, 'UCS-4BE');
    }

    /**
     * UTF-8 compatible ord()
     *
     * @param string $char
     * @param string $encoding
     *
     * @return mixed
     */
    public static function ord($char, $encoding = 'UTF-8')
    {
        if (! $char && $char !== '0') {
            return 0;
        }
        if (! isset($char[1])) {
            return ord($char);
        }
        if ($encoding !== 'UCS-4BE') {
            $char = mb_convert_encoding($char, 'UCS-4BE', $encoding);
        }

        return unpack('N', $char)[1];
    }

    /**
     * Returns UTF-8 char code at given $positing of the $string
     *
     * @param string $string
     * @param int    $position
     *
     * @return mixed
     */
    public static function charCodeAt($string, $position)
    {
        $char = mb_substr($string, $position, 1, 'UTF-8');

        return self::ord($char);
    }

    /**
     * @param int|null $code
     *
     * @return string
     */
    public static function printCharCode($code)
    {
        if ($code === null) {
            return '<EOF>';
        }

        return $code < 0x007F
            // Trust JSON for ASCII.
            ? json_encode(self::chr($code))
            // Otherwise print the escaped form.
            : '"\\u' . dechex($code) . '"';
    }

    /**
     * Upholds the spec rules about naming.
     *
     * @param string $name
     *
     * @throws Error
     */
    public static function assertValidName($name)
    {
        $error = self::isValidNameError($name);
        if ($error) {
            throw $error;
        }
    }

    /**
     * Returns an Error if a name is invalid.
     *
     * @param string    $name
     * @param Node|null $node
     *
     * @return Error|null
     */
    public static function isValidNameError($name, $node = null)
    {
        self::invariant(is_string($name), 'Expected string');

        if (isset($name[1]) && $name[0] === '_' && $name[1] === '_') {
            return new Error(
                sprintf('Name "%s" must not begin with "__", which is reserved by ', $name) .
                'GraphQL introspection.',
                $node
            );
        }

        if (! preg_match('/^[_a-zA-Z][_a-zA-Z0-9]*$/', $name)) {
            return new Error(
                sprintf('Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but "%s" does not.', $name),
                $node
            );
        }

        return null;
    }

    /**
     * Wraps original callable with PHP error handling (using set_error_handler).
     * Resulting callable will collect all PHP errors that occur during the call in $errors array.
     *
     * @param ErrorException[] $errors
     *
     * @return callable
     */
    public static function withErrorHandling(callable $fn, array &$errors)
    {
        return static function () use ($fn, &$errors) {
            // Catch custom errors (to report them in query results)
            set_error_handler(static function ($severity, $message, $file, $line) use (&$errors) {
                $errors[] = new ErrorException($message, 0, $severity, $file, $line);
            });

            try {
                return $fn();
            } finally {
                restore_error_handler();
            }
        };
    }

    /**
     * @param string[] $items
     *
     * @return string
     */
    public static function quotedOrList(array $items)
    {
        $items = array_map(
            static function ($item) {
                return sprintf('"%s"', $item);
            },
            $items
        );

        return self::orList($items);
    }

    /**
     * @param string[] $items
     *
     * @return string
     */
    public static function orList(array $items)
    {
        if (count($items) === 0) {
            throw new LogicException('items must not need to be empty.');
        }
        $selected       = array_slice($items, 0, 5);
        $selectedLength = count($selected);
        $firstSelected  = $selected[0];

        if ($selectedLength === 1) {
            return $firstSelected;
        }

        return array_reduce(
            range(1, $selectedLength - 1),
            static function ($list, $index) use ($selected, $selectedLength) {
                return $list .
                    ($selectedLength > 2 ? ', ' : ' ') .
                    ($index === $selectedLength - 1 ? 'or ' : '') .
                    $selected[$index];
            },
            $firstSelected
        );
    }

    /**
     * Given an invalid input string and a list of valid options, returns a filtered
     * list of valid options sorted based on their similarity with the input.
     *
     * Includes a custom alteration from Damerau-Levenshtein to treat case changes
     * as a single edit which helps identify mis-cased values with an edit distance
     * of 1
     *
     * @param string   $input
     * @param string[] $options
     *
     * @return string[]
     */
    public static function suggestionList($input, array $options)
    {
        $optionsByDistance = [];
        $inputThreshold    = mb_strlen($input) / 2;
        foreach ($options as $option) {
            if ($input === $option) {
                $distance = 0;
            } else {
                $distance = (strtolower($input) === strtolower($option)
                    ? 1
                    : levenshtein($input, $option));
            }
            $threshold = max($inputThreshold, mb_strlen($option) / 2, 1);
            if ($distance > $threshold) {
                continue;
            }

            $optionsByDistance[$option] = $distance;
        }

        asort($optionsByDistance);

        return array_keys($optionsByDistance);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace GraphQL\Utils;
6
7		use ErrorException;
8		use Exception;
9		use GraphQL\Error\Error;
10		use GraphQL\Error\InvariantViolation;
11		use GraphQL\Error\Warning;
12		use GraphQL\Language\AST\Node;
13		use GraphQL\Type\Definition\Type;
14		use GraphQL\Type\Definition\WrappingType;
15		use InvalidArgumentException;
16		use LogicException;
17		use stdClass;
18		use Traversable;
19		use function array_keys;
20		use function array_map;
21		use function array_reduce;
22		use function array_shift;
23		use function array_slice;
24		use function array_values;
25		use function asort;
26		use function count;
27		use function dechex;
28		use function func_get_args;
29		use function func_num_args;
30		use function get_class;
31		use function gettype;
32		use function is_array;
33		use function is_int;
34		use function is_object;
35		use function is_scalar;
36		use function is_string;
37		use function json_encode;
38		use function levenshtein;
39		use function max;
40		use function mb_convert_encoding;
41		use function mb_strlen;
42		use function mb_substr;
43		use function method_exists;
44		use function ord;
45		use function pack;
46		use function preg_match;
47		use function property_exists;
48		use function range;
49		use function restore_error_handler;
50		use function set_error_handler;
51		use function sprintf;
52		use function strtolower;
53		use function unpack;
54
55		class Utils
56		{
57	384	public static function undefined()
58		{
59	384	static $undefined;
60
61	384	return $undefined ?: $undefined = new stdClass();
62		}
63
64		/**
65		* Check if the value is invalid
66		*
67		* @param mixed $value
68		*
69		* @return bool
70		*/
71	75	public static function isInvalid($value)
72		{
73	75	return self::undefined() === $value;
74		}
75
76		/**
77		* @param object $obj
78		* @param mixed[] $vars
79		* @param string[] $requiredKeys
80		*
81		* @return object
82		*/
83	1012	public static function assign($obj, array $vars, array $requiredKeys = [])
84		{
85	1012	foreach ($requiredKeys as $key) {
86	1	if (! isset($vars[$key])) {
87	1	throw new InvalidArgumentException(sprintf('Key %s is expected to be set and not to be null', $key));
88		}
89		}
90
91	1011	foreach ($vars as $key => $value) {
92	1011	if (! property_exists($obj, $key)) {
93		$cls = get_class($obj);
94		Warning::warn(
95		sprintf("Trying to set non-existing property '%s' on class '%s'", $key, $cls),
96		Warning::WARNING_ASSIGN
97		);
98		}
99	1011	$obj->{$key} = $value;
100		}
101
102	1011	return $obj;
103		}
104
105		/**
106		* @param mixed\|Traversable $traversable
107		*
108		* @return mixed\|null
109		*/
110	535	public static function find($traversable, callable $predicate)
111		{
112	535	self::invariant(
113	535	is_array($traversable) \|\| $traversable instanceof Traversable,
114	535	__METHOD__ . ' expects array or Traversable'
115		);
116
117	535	foreach ($traversable as $key => $value) {
118	238	if ($predicate($value, $key)) {
119	238	return $value;
120		}
121		}
122
123	371	return null;
124		}
125
126		/**
127		* @param mixed\|Traversable $traversable
128		*
129		* @return mixed[]
130		*
131		* @throws Exception
132		*/
133	284	public static function filter($traversable, callable $predicate)
134		{
135	284	self::invariant(
136	284	is_array($traversable) \|\| $traversable instanceof Traversable,
137	284	__METHOD__ . ' expects array or Traversable'
138		);
139
140	284	$result = [];
141	284	$assoc = false;
142	284	foreach ($traversable as $key => $value) {
143	252	if (! $assoc && ! is_int($key)) {
144		$assoc = true;
145		}
146	252	if (! $predicate($value, $key)) {
147	95	continue;
148		}
149
150	250	$result[$key] = $value;
151		}
152
153	284	return $assoc ? $result : array_values($result);
154		}
155
156		/**
157		* @param mixed\|Traversable $traversable
158		*
159		* @return mixed[]
160		*
161		* @throws Exception
162		*/
163	399	public static function map($traversable, callable $fn)
164		{
165	399	self::invariant(
166	399	is_array($traversable) \|\| $traversable instanceof Traversable,
167	399	__METHOD__ . ' expects array or Traversable'
168		);
169
170	399	$map = [];
171	399	foreach ($traversable as $key => $value) {
172	367	$map[$key] = $fn($value, $key);
173		}
174
175	397	return $map;
176		}
177
178		/**
179		* @param mixed\|Traversable $traversable
180		*
181		* @return mixed[]
182		*
183		* @throws Exception
184		*/
185		public static function mapKeyValue($traversable, callable $fn)
186		{
187		self::invariant(
188		is_array($traversable) \|\| $traversable instanceof Traversable,
189		__METHOD__ . ' expects array or Traversable'
190		);
191
192		$map = [];
193		foreach ($traversable as $key => $value) {
194		[$newKey, $newValue] = $fn($value, $key);
195		$map[$newKey] = $newValue;
196		}
197
198		return $map;
199		}
200
201		/**
202		* @param mixed\|Traversable $traversable
203		*
204		* @return mixed[]
205		*
206		* @throws Exception
207		*/
208	217	public static function keyMap($traversable, callable $keyFn)
209		{
210	217	self::invariant(
211	217	is_array($traversable) \|\| $traversable instanceof Traversable,
212	217	__METHOD__ . ' expects array or Traversable'
213		);
214
215	217	$map = [];
216	217	foreach ($traversable as $key => $value) {
217	216	$newKey = $keyFn($value, $key);
218	216	if (! is_scalar($newKey)) {
219		continue;
220		}
221
222	216	$map[$newKey] = $value;
223		}
224
225	217	return $map;
226		}
227
228		public static function each($traversable, callable $fn)
229		{
230		self::invariant(
231		is_array($traversable) \|\| $traversable instanceof Traversable,
232		__METHOD__ . ' expects array or Traversable'
233		);
234
235		foreach ($traversable as $key => $item) {
236		$fn($item, $key);
237		}
238		}
239
240		/**
241		* Splits original traversable to several arrays with keys equal to $keyFn return
242		*
243		* E.g. Utils::groupBy([1, 2, 3, 4, 5], function($value) {return $value % 3}) will output:
244		* [
245		* 1 => [1, 4],
246		* 2 => [2, 5],
247		* 0 => [3],
248		* ]
249		*
250		* $keyFn is also allowed to return array of keys. Then value will be added to all arrays with given keys
251		*
252		* @param mixed[]\|Traversable $traversable
253		*
254		* @return mixed[]
255		*/
256	146	public static function groupBy($traversable, callable $keyFn)
257		{
258	146	self::invariant(
259	146	is_array($traversable) \|\| $traversable instanceof Traversable,
260	146	__METHOD__ . ' expects array or Traversable'
261		);
262
263	146	$grouped = [];
264	146	foreach ($traversable as $key => $value) {
265	28	$newKeys = (array) $keyFn($value, $key);
266	28	foreach ($newKeys as $newKey) {
267	28	$grouped[$newKey][] = $value;
268		}
269		}
270
271	146	return $grouped;
272		}
273
274		/**
275		* @param mixed[]\|Traversable $traversable
276		*
277		* @return mixed[][]
278		*/
279	181	public static function keyValMap($traversable, callable $keyFn, callable $valFn)
280		{
281	181	$map = [];
282	181	foreach ($traversable as $item) {
283	164	$map[$keyFn($item)] = $valFn($item);
284		}
285
286	180	return $map;
287		}
288
289		/**
290		* @param mixed[] $traversable
291		*
292		* @return bool
293		*/
294	81	public static function every($traversable, callable $predicate)
295		{
296	81	foreach ($traversable as $key => $value) {
297	81	if (! $predicate($value, $key)) {
298	81	return false;
299		}
300		}
301
302	79	return true;
303		}
304
305		/**
306		* @param mixed[] $traversable
307		*
308		* @return bool
309		*/
310	7	public static function some($traversable, callable $predicate)
311		{
312	7	foreach ($traversable as $key => $value) {
313	7	if ($predicate($value, $key)) {
314	7	return true;
315		}
316		}
317
318	2	return false;
319		}
320
321		/**
322		* @param bool $test
323		* @param string $message
324		*/
325	1272	public static function invariant($test, $message = '')
326		{
327	1272	if (! $test) {
328	34	if (func_num_args() > 2) {
329	7	$args = func_get_args();
330	7	array_shift($args);
331	7	$message = sprintf(...$args);
332		}
333		// TODO switch to Error here
334	34	throw new InvariantViolation($message);
335		}
336	1268	}
337
338		/**
339		* @param Type\|mixed $var
340		*
341		* @return string
342		*/
343	1142	public static function getVariableType($var)
344		{
345	1142	if ($var instanceof Type) {
346		// FIXME: Replace with schema printer call
347		if ($var instanceof WrappingType) {
348		$var = $var->getWrappedType(true);
349		}
350
351		return $var->name;
352		}
353
354	1142	return is_object($var) ? get_class($var) : gettype($var);
355		}
356
357		/**
358		* @param mixed $var
359		*
360		* @return string
361		*/
362	39	public static function printSafeJson($var)
363		{
364	39	if ($var instanceof stdClass) {
365		$var = (array) $var;
366		}
367	39	if (is_array($var)) {
368	16	return json_encode($var);
369		}
370	24	if ($var === '') {
371		return '(empty string)';
372		}
373	24	if ($var === null) {
374		return 'null';
375		}
376	24	if ($var === false) {
377	1	return 'false';
378		}
379	24	if ($var === true) {
380	1	return 'true';
381		}
382	23	if (is_string($var)) {
383	16	return sprintf('"%s"', $var);
384		}
385	8	if (is_scalar($var)) {
386	8	return (string) $var;
387		}
388
389		return gettype($var);
390		}
391
392		/**
393		* @param Type\|mixed $var
394		*
395		* @return string
396		*/
397	278	public static function printSafe($var)
398		{
399	278	if ($var instanceof Type) {
400	63	return $var->toString();
401		}
402	259	if (is_object($var)) {
403	178	if (method_exists($var, '__toString')) {
404		return (string) $var;
405		}
406
407	178	return 'instance of ' . get_class($var);
408		}
409	93	if (is_array($var)) {
410	19	return json_encode($var);
411		}
412	84	if ($var === '') {
413	12	return '(empty string)';
414		}
415	79	if ($var === null) {
416	23	return 'null';
417		}
418	64	if ($var === false) {
419	7	return 'false';
420		}
421	63	if ($var === true) {
422	8	return 'true';
423		}
424	61	if (is_string($var)) {
425	33	return $var;
426		}
427	31	if (is_scalar($var)) {
428	31	return (string) $var;
429		}
430
431		return gettype($var);
432		}
433
434		/**
435		* UTF-8 compatible chr()
436		*
437		* @param string $ord
438		* @param string $encoding
439		*
440		* @return string
441		*/
442	27	public static function chr($ord, $encoding = 'UTF-8')
443		{
444	27	if ($encoding === 'UCS-4BE') {
445	27	return pack('N', $ord);
446		}
447
448	27	return mb_convert_encoding(self::chr($ord, 'UCS-4BE'), $encoding, 'UCS-4BE');
449		}
450
451		/**
452		* UTF-8 compatible ord()
453		*
454		* @param string $char
455		* @param string $encoding
456		*
457		* @return mixed
458		*/
459	5	public static function ord($char, $encoding = 'UTF-8')
460		{
461	5	if (! $char && $char !== '0') {
462		return 0;
463		}
464	5	if (! isset($char[1])) {
465		return ord($char);
466		}
467	5	if ($encoding !== 'UCS-4BE') {
468	5	$char = mb_convert_encoding($char, 'UCS-4BE', $encoding);
469		}
470
471	5	return unpack('N', $char)[1];
472		}
473
474		/**
475		* Returns UTF-8 char code at given $positing of the $string
476		*
477		* @param string $string
478		* @param int $position
479		*
480		* @return mixed
481		*/
482		public static function charCodeAt($string, $position)
483		{
484		$char = mb_substr($string, $position, 1, 'UTF-8');
485
486		return self::ord($char);
487		}
488
489		/**
490		* @param int\|null $code
491		*
492		* @return string
493		*/
494	22	public static function printCharCode($code)
495		{
496	22	if ($code === null) {
497	2	return '<EOF>';
498		}
499
500	20	return $code < 0x007F
501		// Trust JSON for ASCII.
502	18	? json_encode(self::chr($code))
503		// Otherwise print the escaped form.
504	20	: '"\\u' . dechex($code) . '"';
505		}
506
507		/**
508		* Upholds the spec rules about naming.
509		*
510		* @param string $name
511		*
512		* @throws Error
513		*/
514	26	public static function assertValidName($name)
515		{
516	26	$error = self::isValidNameError($name);
517	25	if ($error) {
518	2	throw $error;
519		}
520	23	}
521
522		/**
523		* Returns an Error if a name is invalid.
524		*
525		* @param string $name
526		* @param Node\|null $node
527		*
528		* @return Error\|null
529		*/
530	104	public static function isValidNameError($name, $node = null)
531		{
532	104	self::invariant(is_string($name), 'Expected string');
533
534	103	if (isset($name[1]) && $name[0] === '_' && $name[1] === '_') {
535	90	return new Error(
536	90	sprintf('Name "%s" must not begin with "__", which is reserved by ', $name) .
537	90	'GraphQL introspection.',
538	90	$node
539		);
540		}
541
542	102	if (! preg_match('/^[_a-zA-Z][_a-zA-Z0-9]*$/', $name)) {
543	6	return new Error(
544	6	sprintf('Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but "%s" does not.', $name),
545	6	$node
546		);
547		}
548
549	101	return null;
550		}
551
552		/**
553		* Wraps original callable with PHP error handling (using set_error_handler).
554		* Resulting callable will collect all PHP errors that occur during the call in $errors array.
555		*
556		* @param ErrorException[] $errors
557		*
558		* @return callable
559		*/
560		public static function withErrorHandling(callable $fn, array &$errors)
561		{
562		return static function () use ($fn, &$errors) {
563		// Catch custom errors (to report them in query results)
564		set_error_handler(static function ($severity, $message, $file, $line) use (&$errors) {
565		$errors[] = new ErrorException($message, 0, $severity, $file, $line);
566		});
567
568		try {
569		return $fn();
570		} finally {
571		restore_error_handler();
572		}
573		};
574		}
575
576		/**
577		* @param string[] $items
578		*
579		* @return string
580		*/
581	22	public static function quotedOrList(array $items)
582		{
583	22	$items = array_map(
584		static function ($item) {
585	21	return sprintf('"%s"', $item);
586	22	},
587	22	$items
588		);
589
590	22	return self::orList($items);
591		}
592
593		/**
594		* @param string[] $items
595		*
596		* @return string
597		*/
598	30	public static function orList(array $items)
599		{
600	30	if (count($items) === 0) {
601	1	throw new LogicException('items must not need to be empty.');
602		}
603	29	$selected = array_slice($items, 0, 5);
604	29	$selectedLength = count($selected);
605	29	$firstSelected = $selected[0];
606
607	29	if ($selectedLength === 1) {
608	17	return $firstSelected;
609		}
610
611	12	return array_reduce(
612	12	range(1, $selectedLength - 1),
613		static function ($list, $index) use ($selected, $selectedLength) {
614		return $list .
615	12	($selectedLength > 2 ? ', ' : ' ') .
616	12	($index === $selectedLength - 1 ? 'or ' : '') .
617	12	$selected[$index];
618	12	},
619	12	$firstSelected
620		);
621		}
622
623		/**
624		* Given an invalid input string and a list of valid options, returns a filtered
625		* list of valid options sorted based on their similarity with the input.
626		*
627		* Includes a custom alteration from Damerau-Levenshtein to treat case changes
628		* as a single edit which helps identify mis-cased values with an edit distance
629		* of 1
630		*
631		* @param string $input
632		* @param string[] $options
633		*
634		* @return string[]
635		*/
636	44	public static function suggestionList($input, array $options)
637		{
638	44	$optionsByDistance = [];
639	44	$inputThreshold = mb_strlen($input) / 2;
640	44	foreach ($options as $option) {
641	43	if ($input === $option) {
642	1	$distance = 0;
643		} else {
644	43	$distance = (strtolower($input) === strtolower($option)
645	4	? 1
646	43	: levenshtein($input, $option));
647		}
648	43	$threshold = max($inputThreshold, mb_strlen($option) / 2, 1);
649	43	if ($distance > $threshold) {
650	39	continue;
651		}
652
653	19	$optionsByDistance[$option] = $distance;
654		}
655
656	44	asort($optionsByDistance);
657
658	44	return array_keys($optionsByDistance);
659		}
660		}
661

webonyx / graphql-php

Utils::orList() A last analyzed 2020-01-05 17:30 UTC

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Utils::orList() A
last analyzed 2020-01-05 17:30 UTC