InternalCallMapHandler::getCallMap() - Code Metrics - vimeo/psalm - Measure and Improve Code Quality continuously with Scrutinizer

InternalCallMapHandler::getCallMap() C
last analyzed 2020-07-20 09:18 UTC

↳ Parent: InternalCallMapHandler

Complexity

Conditions	12
Paths	9

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	12
nc	9
nop	0
dl	0
loc	72
rs	6.1842
c	0
b	0
f	0

How to fix Long Method Complexity

<?php
namespace Psalm\Internal\Codebase;

use function array_shift;
use function assert;
use function count;
use function file_exists;
use PhpParser;
use Psalm\Codebase;
use Psalm\Internal\Analyzer\ProjectAnalyzer;
use Psalm\Internal\Analyzer\TypeAnalyzer;
use Psalm\Storage\FunctionLikeParameter;
use Psalm\Type;
use Psalm\Type\Atomic\TCallable;
use function strtolower;
use function substr;
use function version_compare;

/**
 * @internal
 *
 * Gets values from the call map array, which stores data about native functions and methods
 */
class InternalCallMapHandler
{
    const PHP_MAJOR_VERSION = 7;
    const PHP_MINOR_VERSION = 4;
    const LOWEST_AVAILABLE_DELTA = 71;

    /**
     * @var ?int
     */
    private static $loaded_php_major_version = null;
    /**
     * @var ?int
     */
    private static $loaded_php_minor_version = null;

    /**
     * @var array<array<int|string,string>>|null
     */
    private static $call_map = null;

    /**
     * @var array<array<int, TCallable>>|null
     */
    private static $call_map_callables = [];

    /**
     * @var array<string, list<list<Type\TaintKind::*>>>
     */
    private static $taint_sink_map = [];

    /**
     * @param  string                           $method_id
     * @param  array<int, PhpParser\Node\Arg>   $args
     *
     * @return TCallable
     */
    public static function getCallableFromCallMapById(
        Codebase $codebase,
        $method_id,
        array $args,
        ?\Psalm\Internal\Provider\NodeDataProvider $nodes
    ) {
        $possible_callables = self::getCallablesFromCallMap($method_id);

        if ($possible_callables === null) {
            throw new \UnexpectedValueException(
                'Not expecting $function_param_options to be null for ' . $method_id
            );
        }

        return self::getMatchingCallableFromCallMapOptions(
            $codebase,
            $possible_callables,
            $args,
            $nodes
        );
    }

    /**
     * @param  array<int, TCallable>  $callables
     * @param  array<int, PhpParser\Node\Arg>                 $args
     *
     * @return TCallable
     */
    public static function getMatchingCallableFromCallMapOptions(
        Codebase $codebase,
        array $callables,
        array $args,
        ?\Psalm\NodeTypeProvider $nodes
    ) {
        if (count($callables) === 1) {
            return $callables[0];
        }

        $matching_param_count_callable = null;
        $matching_coerced_param_count_callable = null;

        foreach ($callables as $possible_callable) {
            $possible_function_params = $possible_callable->params;

            assert($possible_function_params !== null);

            $all_args_match = true;
            $type_coerced = false;

            $last_param = count($possible_function_params)
                ? $possible_function_params[count($possible_function_params) - 1]
                : null;

            $mandatory_param_count = count($possible_function_params);

            foreach ($possible_function_params as $i => $possible_function_param) {
                if ($possible_function_param->is_optional) {
                    $mandatory_param_count = $i;
                    break;
                }
            }

            if ($mandatory_param_count > count($args) && !($last_param && $last_param->is_variadic)) {
                continue;
            }

            foreach ($args as $argument_offset => $arg) {
                if ($argument_offset >= count($possible_function_params)) {
                    if (!$last_param || !$last_param->is_variadic) {
                        $all_args_match = false;
                        break;
                    }

                    $function_param = $last_param;
                } else {
                    $function_param = $possible_function_params[$argument_offset];
                }

                $param_type = $function_param->type;

                if (!$param_type) {
                    continue;
                }

                $arg_type = null;

                if (!$nodes
                    || !($arg_type = $nodes->getType($arg->value))
                ) {
                    continue;
                }

                if ($arg_type->hasMixed()) {
                    continue;
                }

                if ($arg->unpack && !$function_param->is_variadic) {
                    if ($arg_type->hasArray()) {
                        /**
                         * @psalm-suppress PossiblyUndefinedStringArrayOffset
                         * @var Type\Atomic\TArray|Type\Atomic\ObjectLike|Type\Atomic\TList
                         */
                        $array_atomic_type = $arg_type->getAtomicTypes()['array'];

                        if ($array_atomic_type instanceof Type\Atomic\ObjectLike) {
                            $arg_type = $array_atomic_type->getGenericValueType();
                        } elseif ($array_atomic_type instanceof Type\Atomic\TList) {
                            $arg_type = $array_atomic_type->type_param;
                        } else {
                            $arg_type = $array_atomic_type->type_params[1];
                        }
                    }
                }

                $arg_result = new \Psalm\Internal\Analyzer\TypeComparisonResult();

                if (TypeAnalyzer::isContainedBy(
                    $codebase,
                    $arg_type,
                    $param_type,
                    true,
                    true,
                    $arg_result
                ) || $arg_result->type_coerced) {
                    if ($arg_result->type_coerced) {
                        $type_coerced = true;
                    }

                    continue;
                }

                $all_args_match = false;
                break;
            }

            if (count($args) === count($possible_function_params)) {
                $matching_param_count_callable = $possible_callable;
            }

            if ($all_args_match && !$type_coerced) {
                return $possible_callable;
            }

            if ($all_args_match) {
                $matching_coerced_param_count_callable = $possible_callable;
            }
        }

        if ($matching_coerced_param_count_callable) {
            return $matching_coerced_param_count_callable;
        }

        if ($matching_param_count_callable) {
            return $matching_param_count_callable;
        }

        // if we don't succeed in finding a match, set to the first possible and wait for issues below
        return $callables[0];
    }

    /**
     * @param  string $function_id
     *
     * @return array|null
     * @psalm-return array<int, TCallable>|null
     */
    public static function getCallablesFromCallMap($function_id)
    {
        $call_map_key = strtolower($function_id);

        if (isset(self::$call_map_callables[$call_map_key])) {
            return self::$call_map_callables[$call_map_key];
        }

        $call_map = self::getCallMap();

        if (!isset($call_map[$call_map_key])) {
            return null;
        }

        $call_map_functions = [];
        $call_map_functions[] = $call_map[$call_map_key];

        for ($i = 1; $i < 10; ++$i) {
            if (!isset($call_map[$call_map_key . '\'' . $i])) {
                break;
            }

            $call_map_functions[] = $call_map[$call_map_key . '\'' . $i];
        }

        $possible_callables = [];

        foreach ($call_map_functions as $call_map_function_args) {
            $return_type_string = array_shift($call_map_function_args);

            if (!$return_type_string) {
                $return_type = Type::getMixed();
            } else {
                $return_type = Type::parseString($return_type_string);
            }

            $function_params = [];

            $arg_offset = 0;

            /** @var string $arg_name - key type changed with above array_shift */
            foreach ($call_map_function_args as $arg_name => $arg_type) {
                $by_reference = false;
                $optional = false;
                $variadic = false;

                if ($arg_name[0] === '&') {
                    $arg_name = substr($arg_name, 1);
                    $by_reference = true;
                }

                if (substr($arg_name, -1) === '=') {
                    $arg_name = substr($arg_name, 0, -1);
                    $optional = true;
                }

                if (substr($arg_name, 0, 3) === '...') {
                    $arg_name = substr($arg_name, 3);
                    $variadic = true;
                }

                $param_type = $arg_type
                    ? Type::parseString($arg_type)
                    : Type::getMixed();

                $out_type = null;

                if (\strlen($arg_name) > 2 && $arg_name[0] === 'w' && $arg_name[1] === '_') {
                    $out_type = $param_type;
                    $param_type = Type::getMixed();
                }

                $function_param = new FunctionLikeParameter(
                    $arg_name,
                    $by_reference,
                    $param_type,
                    null,
                    null,
                    $optional,
                    false,
                    $variadic
                );

                if ($out_type) {
                    $function_param->out_type = $out_type;
                }

                if (isset(self::$taint_sink_map[$call_map_key][$arg_offset])) {
                    $function_param->sinks = self::$taint_sink_map[$call_map_key][$arg_offset];
                }

                $function_param->signature_type = null;

                $function_params[] = $function_param;

                $arg_offset++;
            }

            $possible_callables[] = new TCallable('callable', $function_params, $return_type);
        }

        self::$call_map_callables[$call_map_key] = $possible_callables;

        return $possible_callables;
    }

    /**
     * Gets the method/function call map
     *
     * @return array<string, array<int|string, string>>

     * @psalm-suppress MixedInferredReturnType as the use of require buggers things up
     * @psalm-suppress MixedTypeCoercion
     * @psalm-suppress MixedReturnStatement
     */
    public static function getCallMap()
    {
        $codebase = ProjectAnalyzer::getInstance()->getCodebase();
        $analyzer_major_version = $codebase->php_major_version;
        $analyzer_minor_version = $codebase->php_minor_version;

        $analyzer_version = $analyzer_major_version . '.' . $analyzer_minor_version;
        $current_version = self::PHP_MAJOR_VERSION . '.' . self::PHP_MINOR_VERSION;

        $analyzer_version_int = (int) ($analyzer_major_version . $analyzer_minor_version);
        $current_version_int = (int) (self::PHP_MAJOR_VERSION . self::PHP_MINOR_VERSION);

        if (self::$call_map !== null
            && $analyzer_major_version === self::$loaded_php_major_version
            && $analyzer_minor_version === self::$loaded_php_minor_version
        ) {
            return self::$call_map;
        }

        /** @var array<string, array<int|string, string>> */
        $call_map = require(__DIR__ . '/../CallMap.php');

        self::$call_map = [];

        foreach ($call_map as $key => $value) {
            $cased_key = strtolower($key);
            self::$call_map[$cased_key] = $value;
        }

        /**
         * @var array<string, list<list<Type\TaintKind::*>>>
         */
        $taint_map = require(__DIR__ . '/../InternalTaintSinkMap.php');

        foreach ($taint_map as $key => $value) {
            $cased_key = strtolower($key);
            self::$taint_sink_map[$cased_key] = $value;
        }

        if (version_compare($analyzer_version, $current_version, '<')) {
            // the following assumes both minor and major versions a single digits
            for ($i = $current_version_int; $i > $analyzer_version_int && $i >= self::LOWEST_AVAILABLE_DELTA; --$i) {
                $delta_file = __DIR__ . '/../CallMap_' . $i . '_delta.php';
                if (!file_exists($delta_file)) {
                    continue;
                }
                /**
                 * @var array{
                 *     old: array<string, array<int|string, string>>,
                 *     new: array<string, array<int|string, string>>
                 * }
                 * @psalm-suppress UnresolvableInclude
                 */
                $diff_call_map = require($delta_file);

                foreach ($diff_call_map['new'] as $key => $_) {
                    $cased_key = strtolower($key);
                    unset(self::$call_map[$cased_key]);
                }

                foreach ($diff_call_map['old'] as $key => $value) {
                    $cased_key = strtolower($key);
                    self::$call_map[$cased_key] = $value;
                }
            }
        }

        self::$loaded_php_major_version = $analyzer_major_version;
        self::$loaded_php_minor_version = $analyzer_minor_version;

        return self::$call_map;
    }

    /**
     * @param   string $key
     *
     * @return  bool
     */
    public static function inCallMap($key)
    {
        return isset(self::getCallMap()[strtolower($key)]);
    }
}


1			<?php
2			namespace Psalm\Internal\Codebase;
3
4			use function array_shift;
5			use function assert;
6			use function count;
7			use function file_exists;
8			use PhpParser;
9			use Psalm\Codebase;
10			use Psalm\Internal\Analyzer\ProjectAnalyzer;
11			use Psalm\Internal\Analyzer\TypeAnalyzer;
12			use Psalm\Storage\FunctionLikeParameter;
13			use Psalm\Type;
14			use Psalm\Type\Atomic\TCallable;
15			use function strtolower;
16			use function substr;
17			use function version_compare;
18
19			/**
20			* @internal
21			*
22			* Gets values from the call map array, which stores data about native functions and methods
23			*/
24			class InternalCallMapHandler
25			{
26			const PHP_MAJOR_VERSION = 7;
27			const PHP_MINOR_VERSION = 4;
28			const LOWEST_AVAILABLE_DELTA = 71;
29
30			/**
31			* @var ?int
32			*/
33			private static $loaded_php_major_version = null;
34			/**
35			* @var ?int
36			*/
37			private static $loaded_php_minor_version = null;
38
39			/**
40			* @var array<array<int\|string,string>>\|null
41			*/
42			private static $call_map = null;
43
44			/**
45			* @var array<array<int, TCallable>>\|null
46			*/
47			private static $call_map_callables = [];
48
49			/**
50			* @var array<string, list<list<Type\TaintKind::*>>>
51			*/
52			private static $taint_sink_map = [];
53
54			/**
55			* @param string $method_id
56			* @param array<int, PhpParser\Node\Arg> $args
57			*
58			* @return TCallable
59			*/
60			public static function getCallableFromCallMapById(
61			Codebase $codebase,
62			$method_id,
63			array $args,
64			?\Psalm\Internal\Provider\NodeDataProvider $nodes
65			) {
66			$possible_callables = self::getCallablesFromCallMap($method_id);
67
68			if ($possible_callables === null) {
69			throw new \UnexpectedValueException(
70			'Not expecting $function_param_options to be null for ' . $method_id
71			);
72			}
73
74			return self::getMatchingCallableFromCallMapOptions(
75			$codebase,
76			$possible_callables,
77			$args,
78			$nodes
79			);
80			}
81
82			/**
83			* @param array<int, TCallable> $callables
84			* @param array<int, PhpParser\Node\Arg> $args
85			*
86			* @return TCallable
87			*/
88			public static function getMatchingCallableFromCallMapOptions(
89			Codebase $codebase,
90			array $callables,
91			array $args,
92			?\Psalm\NodeTypeProvider $nodes
93			) {
94			if (count($callables) === 1) {
95			return $callables[0];
96			}
97
98			$matching_param_count_callable = null;
99			$matching_coerced_param_count_callable = null;
100
101			foreach ($callables as $possible_callable) {
102			$possible_function_params = $possible_callable->params;
103
104			assert($possible_function_params !== null);
105
106			$all_args_match = true;
107			$type_coerced = false;
108
109			$last_param = count($possible_function_params)
110			? $possible_function_params[count($possible_function_params) - 1]
111			: null;
112
113			$mandatory_param_count = count($possible_function_params);
114
115			foreach ($possible_function_params as $i => $possible_function_param) {
116			if ($possible_function_param->is_optional) {
117			$mandatory_param_count = $i;
118			break;
119			}
120			}
121
122			if ($mandatory_param_count > count($args) && !($last_param && $last_param->is_variadic)) {
123			continue;
124			}
125
126			foreach ($args as $argument_offset => $arg) {
127			if ($argument_offset >= count($possible_function_params)) {
128			if (!$last_param \|\| !$last_param->is_variadic) {
129			$all_args_match = false;
130			break;
131			}
132
133			$function_param = $last_param;
134			} else {
135			$function_param = $possible_function_params[$argument_offset];
136			}
137
138			$param_type = $function_param->type;
139
140			if (!$param_type) {
141			continue;
142			}
143
144			$arg_type = null;
145
146			if (!$nodes
147			\|\| !($arg_type = $nodes->getType($arg->value))
148			) {
149			continue;
150			}
151
152			if ($arg_type->hasMixed()) {
153			continue;
154			}
155
156			if ($arg->unpack && !$function_param->is_variadic) {
157			if ($arg_type->hasArray()) {
158			/**
159			* @psalm-suppress PossiblyUndefinedStringArrayOffset
160			* @var Type\Atomic\TArray\|Type\Atomic\ObjectLike\|Type\Atomic\TList
161			*/
162			$array_atomic_type = $arg_type->getAtomicTypes()['array'];
163
164			if ($array_atomic_type instanceof Type\Atomic\ObjectLike) {
165			$arg_type = $array_atomic_type->getGenericValueType();
166			} elseif ($array_atomic_type instanceof Type\Atomic\TList) {
167			$arg_type = $array_atomic_type->type_param;
168			} else {
169			$arg_type = $array_atomic_type->type_params[1];
170			}
171			}
172			}
173
174			$arg_result = new \Psalm\Internal\Analyzer\TypeComparisonResult();
175
176			if (TypeAnalyzer::isContainedBy(
177			$codebase,
178			$arg_type,
179			$param_type,
180			true,
181			true,
182			$arg_result
183			) \|\| $arg_result->type_coerced) {
184			if ($arg_result->type_coerced) {
185			$type_coerced = true;
186			}
187
188			continue;
189			}
190
191			$all_args_match = false;
192			break;
193			}
194
195			if (count($args) === count($possible_function_params)) {
196			$matching_param_count_callable = $possible_callable;
197			}
198
199			if ($all_args_match && !$type_coerced) {
200			return $possible_callable;
201			}
202
203			if ($all_args_match) {
204			$matching_coerced_param_count_callable = $possible_callable;
205			}
206			}
207
208			if ($matching_coerced_param_count_callable) {
209			return $matching_coerced_param_count_callable;
210			}
211
212			if ($matching_param_count_callable) {
213			return $matching_param_count_callable;
214			}
215
216			// if we don't succeed in finding a match, set to the first possible and wait for issues below
217			return $callables[0];
218			}
219
220			/**
221			* @param string $function_id
222			*
223			* @return array\|null
224			* @psalm-return array<int, TCallable>\|null
225			*/
226			public static function getCallablesFromCallMap($function_id)
227			{
228			$call_map_key = strtolower($function_id);
229
230			if (isset(self::$call_map_callables[$call_map_key])) {
231			return self::$call_map_callables[$call_map_key];
232			}
233
234			$call_map = self::getCallMap();
235
236			if (!isset($call_map[$call_map_key])) {
237			return null;
238			}
239
240			$call_map_functions = [];
241			$call_map_functions[] = $call_map[$call_map_key];
242
243			for ($i = 1; $i < 10; ++$i) {
244			if (!isset($call_map[$call_map_key . '\'' . $i])) {
245			break;
246			}
247
248			$call_map_functions[] = $call_map[$call_map_key . '\'' . $i];
249			}
250
251			$possible_callables = [];
252
253			foreach ($call_map_functions as $call_map_function_args) {
254			$return_type_string = array_shift($call_map_function_args);
255
256			if (!$return_type_string) {
257			$return_type = Type::getMixed();
258			} else {
259			$return_type = Type::parseString($return_type_string);
260			}
261
262			$function_params = [];
263
264			$arg_offset = 0;
265
266			/** @var string $arg_name - key type changed with above array_shift */
267			foreach ($call_map_function_args as $arg_name => $arg_type) {
268			$by_reference = false;
269			$optional = false;
270			$variadic = false;
271
272			if ($arg_name[0] === '&') {
273			$arg_name = substr($arg_name, 1);
274			$by_reference = true;
275			}
276
277			if (substr($arg_name, -1) === '=') {
278			$arg_name = substr($arg_name, 0, -1);
279			$optional = true;
280			}
281
282			if (substr($arg_name, 0, 3) === '...') {
283			$arg_name = substr($arg_name, 3);
284			$variadic = true;
285			}
286
287			$param_type = $arg_type
288			? Type::parseString($arg_type)
289			: Type::getMixed();
290
291			$out_type = null;
292
293			if (\strlen($arg_name) > 2 && $arg_name[0] === 'w' && $arg_name[1] === '_') {
294			$out_type = $param_type;
295			$param_type = Type::getMixed();
296			}
297
298			$function_param = new FunctionLikeParameter(
299			$arg_name,
300			$by_reference,
301			$param_type,
302			null,
303			null,
304			$optional,
305			false,
306			$variadic
307			);
308
309			if ($out_type) {
310			$function_param->out_type = $out_type;
311			}
312
313			if (isset(self::$taint_sink_map[$call_map_key][$arg_offset])) {
314			$function_param->sinks = self::$taint_sink_map[$call_map_key][$arg_offset];
315			}
316
317			$function_param->signature_type = null;
318
319			$function_params[] = $function_param;
320
321			$arg_offset++;
322			}
323
324			$possible_callables[] = new TCallable('callable', $function_params, $return_type);
325			}
326
327			self::$call_map_callables[$call_map_key] = $possible_callables;
328
329			return $possible_callables;
330			}
331
332			/**
333			* Gets the method/function call map
334			*
335			* @return array<string, array<int\|string, string>>
			0 ignored issues – show Documentation introduced 2018-01-25 01:48 UTC by Report Bug Copy Issue Report The doc-type `array<string,` could not be parsed: Expected ">" at position 5, but found "end of type". (view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
336			* @psalm-suppress MixedInferredReturnType as the use of require buggers things up
337			* @psalm-suppress MixedTypeCoercion
338			* @psalm-suppress MixedReturnStatement
339			*/
340			public static function getCallMap()
341			{
342			$codebase = ProjectAnalyzer::getInstance()->getCodebase();
343			$analyzer_major_version = $codebase->php_major_version;
344			$analyzer_minor_version = $codebase->php_minor_version;
345
346			$analyzer_version = $analyzer_major_version . '.' . $analyzer_minor_version;
347			$current_version = self::PHP_MAJOR_VERSION . '.' . self::PHP_MINOR_VERSION;
348
349			$analyzer_version_int = (int) ($analyzer_major_version . $analyzer_minor_version);
350			$current_version_int = (int) (self::PHP_MAJOR_VERSION . self::PHP_MINOR_VERSION);
351
352			if (self::$call_map !== null
353			&& $analyzer_major_version === self::$loaded_php_major_version
354			&& $analyzer_minor_version === self::$loaded_php_minor_version
355			) {
356			return self::$call_map;
357			}
358
359			/** @var array<string, array<int\|string, string>> */
360			$call_map = require(__DIR__ . '/../CallMap.php');
361
362			self::$call_map = [];
363
364			foreach ($call_map as $key => $value) {
365			$cased_key = strtolower($key);
366			self::$call_map[$cased_key] = $value;
367			}
368
369			/**
370			* @var array<string, list<list<Type\TaintKind::*>>>
371			*/
372			$taint_map = require(__DIR__ . '/../InternalTaintSinkMap.php');
373
374			foreach ($taint_map as $key => $value) {
375			$cased_key = strtolower($key);
376			self::$taint_sink_map[$cased_key] = $value;
377			}
378
379			if (version_compare($analyzer_version, $current_version, '<')) {
380			// the following assumes both minor and major versions a single digits
381			for ($i = $current_version_int; $i > $analyzer_version_int && $i >= self::LOWEST_AVAILABLE_DELTA; --$i) {
382			$delta_file = __DIR__ . '/../CallMap_' . $i . '_delta.php';
383			if (!file_exists($delta_file)) {
384			continue;
385			}
386			/**
387			* @var array{
388			* old: array<string, array<int\|string, string>>,
389			* new: array<string, array<int\|string, string>>
390			* }
391			* @psalm-suppress UnresolvableInclude
392			*/
393			$diff_call_map = require($delta_file);
394
395			foreach ($diff_call_map['new'] as $key => $_) {
396			$cased_key = strtolower($key);
397			unset(self::$call_map[$cased_key]);
398			}
399
400			foreach ($diff_call_map['old'] as $key => $value) {
401			$cased_key = strtolower($key);
402			self::$call_map[$cased_key] = $value;
403			}
404			}
405			}
406
407			self::$loaded_php_major_version = $analyzer_major_version;
408			self::$loaded_php_minor_version = $analyzer_minor_version;
409
410			return self::$call_map;
411			}
412
413			/**
414			* @param string $key
415			*
416			* @return bool
417			*/
418			public static function inCallMap($key)
419			{
420			return isset(self::getCallMap()[strtolower($key)]);
421			}
422			}
423

vimeo / psalm

InternalCallMapHandler::getCallMap() C last analyzed 2020-07-20 09:18 UTC

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

Filter issues like

InternalCallMapHandler::getCallMap() C
last analyzed 2020-07-20 09:18 UTC