NameStmtPrefixer::prefixName() - Code Metrics - Inspection of "Tweak NameStmtPrefixer" - humbug/php-scoper - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#505)

by Théo

created 2021-06-16 07:01 UTC

NameStmtPrefixer::prefixName() C

↳ Parent: NameStmtPrefixer

Complexity

Conditions	16
Paths	17

Size

Total Lines	94
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	25
CRAP Score	16

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
cc	16
eloc	50
c	3
b	0
f	0
nc	17
nop	2
dl	0
loc	94
ccs	25
cts	25
cp	1
crap	16
rs	5.5666

How to fix Long Method Complexity

<?php

declare(strict_types=1);

/*
 * This file is part of the humbug/php-scoper package.
 *
 * Copyright (c) 2017 Théo FIDRY <[email protected]>,
 *                    Pádraic Brady <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Humbug\PhpScoper\PhpParser\NodeVisitor;

use Humbug\PhpScoper\PhpParser\Node\FullyQualifiedFactory;
use Humbug\PhpScoper\PhpParser\NodeVisitor\NamespaceStmt\NamespaceStmtCollection;
use Humbug\PhpScoper\PhpParser\NodeVisitor\UseStmt\UseStmtCollection;
use Humbug\PhpScoper\Reflector;
use Humbug\PhpScoper\Whitelist;
use PhpParser\Node;
use PhpParser\Node\Expr\ArrowFunction;
use PhpParser\Node\Expr\ClassConstFetch;
use PhpParser\Node\Expr\ConstFetch;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Expr\Instanceof_;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\Expr\StaticCall;
use PhpParser\Node\Expr\StaticPropertyFetch;
use PhpParser\Node\Name;
use PhpParser\Node\Name\FullyQualified;
use PhpParser\Node\NullableType;
use PhpParser\Node\Param;
use PhpParser\Node\Stmt\Catch_;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\Interface_;
use PhpParser\Node\Stmt\Property;
use PhpParser\Node\Stmt\TraitUse;
use PhpParser\Node\Stmt\TraitUseAdaptation\Alias;
use PhpParser\Node\Stmt\TraitUseAdaptation\Precedence;
use PhpParser\Node\Stmt\Use_;
use PhpParser\Node\Stmt\UseUse;
use PhpParser\NodeVisitorAbstract;
use UnexpectedValueException;
use function count;
use function get_class;
use function in_array;
use function Safe\sprintf;
use function strtolower;

/**
 * Prefixes names when appropriate.
 *
 * ```
 * new Foo\Bar();
 * ```.
 *
 * =>
 *
 * ```
 * new \Humbug\Foo\Bar();
 * ```
 *
 * @private
 */
final class NameStmtPrefixer extends NodeVisitorAbstract
{
    // TODO: remove
    public const SPECIAL_CLASS_NAMES = [
        'self',
        'static',
        'parent',
    ];

    private const SUPPORTED_PARENT_NODE_CLASS_NAMES = [
        Alias::class,
        ArrowFunction::class,
        Catch_::class,
        ConstFetch::class,
        Class_::class,
        ClassConstFetch::class,
        ClassMethod::class,
        FuncCall::class,
        Function_::class,
        Instanceof_::class,
        Interface_::class,
        New_::class,
        Param::class,
        Precedence::class,
        Property::class,
        StaticCall::class,
        StaticPropertyFetch::class,
        TraitUse::class,
    ];

    private string $prefix;
    private Whitelist $whitelist;
    private NamespaceStmtCollection $namespaceStatements;
    private UseStmtCollection $useStatements;
    private Reflector $reflector;

    public function __construct(
        string $prefix,
        Whitelist $whitelist,
        NamespaceStmtCollection $namespaceStatements,
        UseStmtCollection $useStatements,
        Reflector $reflector
    ) {
        $this->prefix = $prefix;
        $this->whitelist = $whitelist;
        $this->namespaceStatements = $namespaceStatements;
        $this->useStatements = $useStatements;
        $this->reflector = $reflector;
    }

    public function enterNode(Node $node): Node
    {
        if (!($node instanceof Name)) {
            return $node;
        }

        $parent = self::findParent($node);

        return null !== $parent
            ? $this->prefixName($node, $parent)
            : $node;
    }

    private static function findParent(Node $name): ?Node
    {
        $parent = ParentNodeAppender::findParent($name);

        if (null === $parent) {
            return null;
        }

        if (!($parent instanceof NullableType)) {
            return $parent;
        }

        return self::findParent($parent);
    }

    private function prefixName(Name $resolvedName, Node $parentNode): Node
    {
        if (
            $resolvedName->isSpecialClassName()
            || !self::isParentNodeSupported($parentNode)
        ) {
            return $resolvedName;
        }

        $originalName = OriginalNameResolver::getOriginalName($resolvedName);

        if ($parentNode instanceof ConstFetch
            && 'null' === $originalName->toLowerString()
        ) {
            return $originalName;
        }

        // Do not prefix if there is a matching use statement.
        $useStatement = $this->useStatements->findStatementForNode(
            $this->namespaceStatements->findNamespaceForNode($resolvedName),
            $resolvedName,
        );

        if (
            self::doesNameBelongToUseStatement(
                $originalName,
                $resolvedName,
                $parentNode,
                $useStatement,
                $this->whitelist,
            )
        ) {
            return $originalName;
        }

        if ($this->isNamePrefixable($resolvedName)) {
            return $resolvedName;
        }

        // Do not prefix if the Name is inside of the current namespace
        $currentNamespace = $this->namespaceStatements->getCurrentNamespaceName();

        if (
            self::doesNameBelongToNamespace(
                $originalName,
                $resolvedName,
                $currentNamespace,
            )
            || $this->doesNameBelongToGlobalNamespace(
                $originalName,
                $resolvedName,
                $parentNode,
                $currentNamespace,
            )
        ) {
            return $originalName;
        }

        if (!$this->isClassNamePrefixable($resolvedName, $parentNode)) {
            return $resolvedName;
        }

        if ($parentNode instanceof ConstFetch) {
            $prefixedName = $this->prefixConstFetchNode($resolvedName);

            if (null !== $prefixedName) {
                return $prefixedName;
            }

            // Continue
        }

        // Functions have a fallback auto-loading so we cannot prefix them when the name is ambiguous
        // See https://wiki.php.net/rfc/fallback-to-root-scope-deprecation
        if ($parentNode instanceof FuncCall) {
            $prefixedName = $this->prefixFuncCallNode($originalName, $resolvedName);

            if (null !== $prefixedName) {
                return $prefixedName;
            }

            // Continue
        }

        if ($parentNode instanceof ClassMethod
            && $resolvedName->isSpecialClassName()
        ) {
            return $resolvedName;
        }

        return FullyQualifiedFactory::concat(
            $this->prefix,
            $resolvedName->toString(),
            $resolvedName->getAttributes(),
        );
    }

    private static function isParentNodeSupported(Node $parentNode): bool
    {
        foreach (self::SUPPORTED_PARENT_NODE_CLASS_NAMES as $supportedClassName) {
            if ($parentNode instanceof $supportedClassName) {
                return true;
            }
        }

        return false;
    }

    /**
     * @param string[] $array
     * @param string[] $start
     */
    private static function arrayStartsWith(array $array, array $start): bool
    {
        $prefixLength = count($start);

        for ($index = 0; $index < $prefixLength; ++$index) {
            if ($array[$index] !== $start[$index]) {
                return false;
            }
        }

        return true;
    }

    private function isNamePrefixable(Name $resolvedName): bool
    {
        if (!($resolvedName instanceof FullyQualified)) {
            return false;
        }

        return (
            // Is already prefixed
            $this->prefix === $resolvedName->getFirst()
            // The namespace node is whitelisted
            || $this->whitelist->belongsToWhitelistedNamespace((string) $resolvedName)
        );
    }

    private static function doesNameBelongToNamespace(
        Name $originalName,
        Name $resolvedName,
        ?Name $namespaceName
    ): bool {
        if (
            $namespaceName === null
            || !($resolvedName instanceof FullyQualified)
            // In case the original name is a FQ, we do not skip the prefixing
            // and keep it as FQ
            || $originalName instanceof FullyQualified
        ) {
            return false;
        }

        $originalNameFQParts = [
            ...$namespaceName->parts,
            ...$originalName->parts,
        ];

        return $originalNameFQParts === $resolvedName->parts;
    }

    private function doesNameBelongToGlobalNamespace(
        Name $originalName,
        Name $resolvedName,
        Node $parentNode,
        ?Name $namespaceName
    ): bool {
        return (
            // In the global scope
            null === $namespaceName
            && !($originalName instanceof FullyQualified)
            && !($parentNode instanceof ConstFetch)
            && !$this->whitelist->isSymbolWhitelisted($resolvedName->toString())
            && !$this->reflector->isFunctionInternal($resolvedName->toString())
            && !$this->reflector->isClassInternal($resolvedName->toString())
        );
    }

    private static function doesNameBelongToUseStatement(
        Name $originalName,
        Name $resolvedName,
        Node $parentNode,
        ?Name $useStatementName,
        Whitelist $whitelist
    ): bool {
        if (
            null === $useStatementName
            || !($resolvedName instanceof FullyQualified)
            // In case the original name is a FQ, we do not skip the prefixing
            // and keep it as FQ
            || $originalName instanceof FullyQualified
            // TODO: review Isolated Finder support
            || $resolvedName->parts === ['Isolated', 'Symfony', 'Component', 'Finder', 'Finder']
            || !self::arrayStartsWith($resolvedName->parts, $useStatementName->parts)
        ) {
            return false;
        }

        [$useStmtAlias, $useStmtType] = self::getUseStmtAliasAndType($useStatementName);

        if ($parentNode instanceof ConstFetch) {
            // If a constant is whitelisted, it can be that letting a non FQ breaks
            // things. For example the whitelisted namespaced constant could be
            // used via a partial import (in which case it is a regular import not
            // a constant one) which may not be prefixed.
            if ($whitelist->isGlobalWhitelistedConstant($resolvedName->toString())
                || $whitelist->isSymbolWhitelisted($resolvedName->toString(), true)
            ) {
                return Use_::TYPE_CONSTANT === $useStmtType;
            }

            return null !== $useStatementName;
        }

        if (null === $useStmtAlias) {
            return true;
        }

        // Classes and namespaces usages are case-insensitive
        $caseSensitiveUseStmt = !in_array(
            $useStmtType,
            [Use_::TYPE_UNKNOWN, Use_::TYPE_NORMAL],
            true,
        );

        return $caseSensitiveUseStmt
            ? $originalName->getFirst() === $useStmtAlias->toString()
            : strtolower($originalName->getFirst()) === $useStmtAlias->toLowerString();
    }

    private function isClassNamePrefixable(
        Name $resolvedName,
        Node $parentNode
    ): bool
    {
        $isClassNode = !($parentNode instanceof ConstFetch || $parentNode instanceof FuncCall);

        return (
            !$isClassNode
            || !($resolvedName instanceof FullyQualified)
            || !$this->reflector->isClassInternal($resolvedName->toString())
        );
    }

    private function prefixConstFetchNode(Name $resolvedName): ?Name
    {
        $resolvedNameString = $resolvedName->toString();

        if ($this->whitelist->isSymbolWhitelisted($resolvedNameString, true)) {
            return $resolvedName;
        }

        if ($this->reflector->isConstantInternal($resolvedNameString)) {
            return new FullyQualified(
                $resolvedNameString,
                $resolvedName->getAttributes(),
            );
        }

        // Constants have an auto-loading fallback so we cannot prefix them when the name is ambiguous
        // See https://wiki.php.net/rfc/fallback-to-root-scope-deprecation
        if (!($resolvedName instanceof FullyQualified)) {
            return $resolvedName;
        }

        if ($this->whitelist->isGlobalWhitelistedConstant($resolvedNameString)) {
            // Unlike classes & functions, whitelisted are not prefixed with aliases registered in scoper-autoload.php
            return new FullyQualified(
                $resolvedNameString,
                $resolvedName->getAttributes(),
            );
        }

        return null;
    }

    private function prefixFuncCallNode(Name $originalName, Name $resolvedName): ?Name
    {
        if ($this->reflector->isFunctionInternal($originalName->toString())) {
            return new FullyQualified(
                $originalName->toString(),
                $originalName->getAttributes(),
            );
        }

        if (!($resolvedName instanceof FullyQualified)) {
            return $resolvedName;
        }

        return null;
    }

    /**
     * @return array{Identifier|string|null, Use_::TYPE_*}

     */
    private static function getUseStmtAliasAndType(Name $name): array
    {
        $use = ParentNodeAppender::getParent($name);

        if (!($use instanceof UseUse)) {
            throw new UnexpectedValueException(
                sprintf(
                    'Unexpected use statement name parent "%s"',
                    get_class($use),
                ),
            );
        }

        $useParent = ParentNodeAppender::getParent($use);

        if (!($useParent instanceof Use_)) {
            throw new UnexpectedValueException(
                sprintf(
                    'Unexpected UseUse parent "%s"',
                    get_class($useParent),
                ),
            );
        }

        return [
            $use->alias,
            $useParent->type,
        ];
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		/*
6		* This file is part of the humbug/php-scoper package.
7		*
8		* Copyright (c) 2017 Théo FIDRY <[email protected]>,
9		* Pádraic Brady <[email protected]>
10		*
11		* For the full copyright and license information, please view the LICENSE
12		* file that was distributed with this source code.
13		*/
14
15		namespace Humbug\PhpScoper\PhpParser\NodeVisitor;
16
17		use Humbug\PhpScoper\PhpParser\Node\FullyQualifiedFactory;
18		use Humbug\PhpScoper\PhpParser\NodeVisitor\NamespaceStmt\NamespaceStmtCollection;
19		use Humbug\PhpScoper\PhpParser\NodeVisitor\UseStmt\UseStmtCollection;
20		use Humbug\PhpScoper\Reflector;
21		use Humbug\PhpScoper\Whitelist;
22		use PhpParser\Node;
23		use PhpParser\Node\Expr\ArrowFunction;
24		use PhpParser\Node\Expr\ClassConstFetch;
25		use PhpParser\Node\Expr\ConstFetch;
26		use PhpParser\Node\Expr\FuncCall;
27		use PhpParser\Node\Expr\Instanceof_;
28		use PhpParser\Node\Expr\New_;
29		use PhpParser\Node\Expr\StaticCall;
30		use PhpParser\Node\Expr\StaticPropertyFetch;
31		use PhpParser\Node\Name;
32		use PhpParser\Node\Name\FullyQualified;
33		use PhpParser\Node\NullableType;
34		use PhpParser\Node\Param;
35		use PhpParser\Node\Stmt\Catch_;
36		use PhpParser\Node\Stmt\Class_;
37		use PhpParser\Node\Stmt\ClassMethod;
38		use PhpParser\Node\Stmt\Function_;
39		use PhpParser\Node\Stmt\Interface_;
40		use PhpParser\Node\Stmt\Property;
41		use PhpParser\Node\Stmt\TraitUse;
42		use PhpParser\Node\Stmt\TraitUseAdaptation\Alias;
43		use PhpParser\Node\Stmt\TraitUseAdaptation\Precedence;
44		use PhpParser\Node\Stmt\Use_;
45		use PhpParser\Node\Stmt\UseUse;
46		use PhpParser\NodeVisitorAbstract;
47		use UnexpectedValueException;
48		use function count;
49		use function get_class;
50		use function in_array;
51		use function Safe\sprintf;
52		use function strtolower;
53
54		/**
55		* Prefixes names when appropriate.
56		*
57		* ```
58		* new Foo\Bar();
59		* ```.
60		*
61		* =>
62		*
63		* ```
64		* new \Humbug\Foo\Bar();
65		* ```
66		*
67		* @private
68	549	*/
69		final class NameStmtPrefixer extends NodeVisitorAbstract
70		{
71		// TODO: remove
72		public const SPECIAL_CLASS_NAMES = [
73		'self',
74	549	'static',
75	549	'parent',
76	549	];
77	549
78		private const SUPPORTED_PARENT_NODE_CLASS_NAMES = [
79		Alias::class,
80		ArrowFunction::class,
81		Catch_::class,
82		ConstFetch::class,
83	548	Class_::class,
84		ClassConstFetch::class,
85	548	ClassMethod::class,
86	544	FuncCall::class,
87	548	Function_::class,
88		Instanceof_::class,
89		Interface_::class,
90		New_::class,
91	544	Param::class,
92		Precedence::class,
93	544	Property::class,
94		StaticCall::class,
95	544	StaticPropertyFetch::class,
96	4	TraitUse::class,
97		];
98
99		private string $prefix;
100	4	private Whitelist $whitelist;
101		private NamespaceStmtCollection $namespaceStatements;
102		private UseStmtCollection $useStatements;
103		private Reflector $reflector;
104	544
105	542	public function __construct(
106	541	string $prefix,
107	540	Whitelist $whitelist,
108	540	NamespaceStmtCollection $namespaceStatements,
109	538	UseStmtCollection $useStatements,
110	538	Reflector $reflector
111	538	) {
112	538	$this->prefix = $prefix;
113	538	$this->whitelist = $whitelist;
114	538	$this->namespaceStatements = $namespaceStatements;
115	538	$this->useStatements = $useStatements;
116	544	$this->reflector = $reflector;
117		}
118
119	537	public function enterNode(Node $node): Node
120		{
121		if (!($node instanceof Name)) {
122		return $node;
123		}
124	405
125	349	$parent = self::findParent($node);
126	298
127	236	return null !== $parent
128	185	? $this->prefixName($node, $parent)
129	133	: $node;
130	131	}
131	120
132		private static function findParent(Node $name): ?Node
133	320	{
134		$parent = ParentNodeAppender::findParent($name);
135	9
136		if (null === $parent) {
137		return null;
138	403	}
139	4
140		if (!($parent instanceof NullableType)) {
141		return $parent;
142	403	}
143
144	403	return self::findParent($parent);
145		}
146	403
147	403	private function prefixName(Name $resolvedName, Node $parentNode): Node
148		{
149	23	if (
150		$resolvedName->isSpecialClassName()
151		\|\| !self::isParentNodeSupported($parentNode)
152		) {
153	392	return $resolvedName;
154	257	}
155
156	61	$originalName = OriginalNameResolver::getOriginalName($resolvedName);
157
158		if ($parentNode instanceof ConstFetch
159	355	&& 'null' === $originalName->toLowerString()
160	85	) {
161	21	return $originalName;
162		}
163
164	67	// Do not prefix if there is a matching use statement.
165	19	$useStatement = $this->useStatements->findStatementForNode(
166		$this->namespaceStatements->findNamespaceForNode($resolvedName),
167		$resolvedName,
168		);
169
170	48	if (
171	8	self::doesNameBelongToUseStatement(
172		$originalName,
173		$resolvedName,
174	46	$parentNode,
175		$useStatement,
176	11	$this->whitelist,
177		)
178		) {
179		return $originalName;
180		}
181
182		if ($this->isNamePrefixable($resolvedName)) {
183		return $resolvedName;
184	320	}
185	76
186	37	// Do not prefix if the Name is inside of the current namespace
187		$currentNamespace = $this->namespaceStatements->getCurrentNamespaceName();
188
189	54	if (
190	9	self::doesNameBelongToNamespace(
191		$originalName,
192		$resolvedName,
193		$currentNamespace,
194	297	)
195	3	\|\| $this->doesNameBelongToGlobalNamespace(
196		$originalName,
197		$resolvedName,
198	297	$parentNode,
199	297	$currentNamespace,
200	297	)
201	297	) {
202		return $originalName;
203		}
204
205		if (!$this->isClassNamePrefixable($resolvedName, $parentNode)) {
206		return $resolvedName;
207		}
208
209		if ($parentNode instanceof ConstFetch) {
210		$prefixedName = $this->prefixConstFetchNode($resolvedName);
211
212		if (null !== $prefixedName) {
213		return $prefixedName;
214		}
215
216		// Continue
217		}
218
219		// Functions have a fallback auto-loading so we cannot prefix them when the name is ambiguous
220		// See https://wiki.php.net/rfc/fallback-to-root-scope-deprecation
221		if ($parentNode instanceof FuncCall) {
222		$prefixedName = $this->prefixFuncCallNode($originalName, $resolvedName);
223
224		if (null !== $prefixedName) {
225		return $prefixedName;
226		}
227
228		// Continue
229		}
230
231		if ($parentNode instanceof ClassMethod
232		&& $resolvedName->isSpecialClassName()
233		) {
234		return $resolvedName;
235		}
236
237		return FullyQualifiedFactory::concat(
238		$this->prefix,
239		$resolvedName->toString(),
240		$resolvedName->getAttributes(),
241		);
242		}
243
244		private static function isParentNodeSupported(Node $parentNode): bool
245		{
246		foreach (self::SUPPORTED_PARENT_NODE_CLASS_NAMES as $supportedClassName) {
247		if ($parentNode instanceof $supportedClassName) {
248		return true;
249		}
250		}
251
252		return false;
253		}
254
255		/**
256		* @param string[] $array
257		* @param string[] $start
258		*/
259		private static function arrayStartsWith(array $array, array $start): bool
260		{
261		$prefixLength = count($start);
262
263		for ($index = 0; $index < $prefixLength; ++$index) {
264		if ($array[$index] !== $start[$index]) {
265		return false;
266		}
267		}
268
269		return true;
270		}
271
272		private function isNamePrefixable(Name $resolvedName): bool
273		{
274		if (!($resolvedName instanceof FullyQualified)) {
275		return false;
276		}
277
278		return (
279		// Is already prefixed
280		$this->prefix === $resolvedName->getFirst()
281		// The namespace node is whitelisted
282		\|\| $this->whitelist->belongsToWhitelistedNamespace((string) $resolvedName)
283		);
284		}
285
286		private static function doesNameBelongToNamespace(
287		Name $originalName,
288		Name $resolvedName,
289		?Name $namespaceName
290		): bool {
291		if (
292		$namespaceName === null
293		\|\| !($resolvedName instanceof FullyQualified)
294		// In case the original name is a FQ, we do not skip the prefixing
295		// and keep it as FQ
296		\|\| $originalName instanceof FullyQualified
297		) {
298		return false;
299		}
300
301		$originalNameFQParts = [
302		...$namespaceName->parts,
303		...$originalName->parts,
304		];
305
306		return $originalNameFQParts === $resolvedName->parts;
307		}
308
309		private function doesNameBelongToGlobalNamespace(
310		Name $originalName,
311		Name $resolvedName,
312		Node $parentNode,
313		?Name $namespaceName
314		): bool {
315		return (
316		// In the global scope
317		null === $namespaceName
318		&& !($originalName instanceof FullyQualified)
319		&& !($parentNode instanceof ConstFetch)
320		&& !$this->whitelist->isSymbolWhitelisted($resolvedName->toString())
321		&& !$this->reflector->isFunctionInternal($resolvedName->toString())
322		&& !$this->reflector->isClassInternal($resolvedName->toString())
323		);
324		}
325
326		private static function doesNameBelongToUseStatement(
327		Name $originalName,
328		Name $resolvedName,
329		Node $parentNode,
330		?Name $useStatementName,
331		Whitelist $whitelist
332		): bool {
333		if (
334		null === $useStatementName
335		\|\| !($resolvedName instanceof FullyQualified)
336		// In case the original name is a FQ, we do not skip the prefixing
337		// and keep it as FQ
338		\|\| $originalName instanceof FullyQualified
339		// TODO: review Isolated Finder support
340		\|\| $resolvedName->parts === ['Isolated', 'Symfony', 'Component', 'Finder', 'Finder']
341		\|\| !self::arrayStartsWith($resolvedName->parts, $useStatementName->parts)
342		) {
343		return false;
344		}
345
346		[$useStmtAlias, $useStmtType] = self::getUseStmtAliasAndType($useStatementName);
347
348		if ($parentNode instanceof ConstFetch) {
349		// If a constant is whitelisted, it can be that letting a non FQ breaks
350		// things. For example the whitelisted namespaced constant could be
351		// used via a partial import (in which case it is a regular import not
352		// a constant one) which may not be prefixed.
353		if ($whitelist->isGlobalWhitelistedConstant($resolvedName->toString())
354		\|\| $whitelist->isSymbolWhitelisted($resolvedName->toString(), true)
355		) {
356		return Use_::TYPE_CONSTANT === $useStmtType;
357		}
358
359		return null !== $useStatementName;
360		}
361
362		if (null === $useStmtAlias) {
363		return true;
364		}
365
366		// Classes and namespaces usages are case-insensitive
367		$caseSensitiveUseStmt = !in_array(
368		$useStmtType,
369		[Use_::TYPE_UNKNOWN, Use_::TYPE_NORMAL],
370		true,
371		);
372
373		return $caseSensitiveUseStmt
374		? $originalName->getFirst() === $useStmtAlias->toString()
375		: strtolower($originalName->getFirst()) === $useStmtAlias->toLowerString();
376		}
377
378		private function isClassNamePrefixable(
379		Name $resolvedName,
380		Node $parentNode
381		): bool
382		{
383		$isClassNode = !($parentNode instanceof ConstFetch \|\| $parentNode instanceof FuncCall);
384
385		return (
386		!$isClassNode
387		\|\| !($resolvedName instanceof FullyQualified)
388		\|\| !$this->reflector->isClassInternal($resolvedName->toString())
389		);
390		}
391
392		private function prefixConstFetchNode(Name $resolvedName): ?Name
393		{
394		$resolvedNameString = $resolvedName->toString();
395
396		if ($this->whitelist->isSymbolWhitelisted($resolvedNameString, true)) {
397		return $resolvedName;
398		}
399
400		if ($this->reflector->isConstantInternal($resolvedNameString)) {
401		return new FullyQualified(
402		$resolvedNameString,
403		$resolvedName->getAttributes(),
404		);
405		}
406
407		// Constants have an auto-loading fallback so we cannot prefix them when the name is ambiguous
408		// See https://wiki.php.net/rfc/fallback-to-root-scope-deprecation
409		if (!($resolvedName instanceof FullyQualified)) {
410		return $resolvedName;
411		}
412
413		if ($this->whitelist->isGlobalWhitelistedConstant($resolvedNameString)) {
414		// Unlike classes & functions, whitelisted are not prefixed with aliases registered in scoper-autoload.php
415		return new FullyQualified(
416		$resolvedNameString,
417		$resolvedName->getAttributes(),
418		);
419		}
420
421		return null;
422		}
423
424		private function prefixFuncCallNode(Name $originalName, Name $resolvedName): ?Name
425		{
426		if ($this->reflector->isFunctionInternal($originalName->toString())) {
427		return new FullyQualified(
428		$originalName->toString(),
429		$originalName->getAttributes(),
430		);
431		}
432
433		if (!($resolvedName instanceof FullyQualified)) {
434		return $resolvedName;
435		}
436
437		return null;
438		}
439
440		/**
441		* @return array{Identifier\|string\|null, Use_::TYPE_*}
		0 ignored issues – show Documentation Bug introduced 2021-06-15 22:55 UTC by Report Bug Copy Issue Report The doc comment `array{Identifier\|string\|null, Use_::TYPE_*}` at position `2` could not be parsed: Expected ':' at position 2, but found 'Identifier'. Loading history...
442		*/
443		private static function getUseStmtAliasAndType(Name $name): array
444		{
445		$use = ParentNodeAppender::getParent($name);
446
447		if (!($use instanceof UseUse)) {
448		throw new UnexpectedValueException(
449		sprintf(
450		'Unexpected use statement name parent "%s"',
451		get_class($use),
452		),
453		);
454		}
455
456		$useParent = ParentNodeAppender::getParent($use);
457
458		if (!($useParent instanceof Use_)) {
459		throw new UnexpectedValueException(
460		sprintf(
461		'Unexpected UseUse parent "%s"',
462		get_class($useParent),
463		),
464		);
465		}
466
467		return [
468		$use->alias,
469		$useParent->type,
470		];
471		}
472		}
473

humbug / php-scoper

Pull Request — master (#505)

NameStmtPrefixer::prefixName() C

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