ReflectionFileNamespace::findNamespaceAliases() - Code Metrics - Inspection of "Library cleaning" - goaop/parser-reflection - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#107)

by Alexander

created 2020-09-27 21:40 UTC

ReflectionFileNamespace::findNamespaceAliases() A

↳ Parent: ReflectionFileNamespace

Complexity

Conditions	5
Paths	5

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	5

Importance

Changes

Metric	Value
dl	0
loc	18
ccs	9
cts	9
cp	1
rs	9.3554
c	0
b	0
f	0
cc	5
nc	5
nop	0
crap	5

<?php
declare(strict_types=1);
/**
 * Parser Reflection API
 *
 * @copyright Copyright 2015, Lisachenko Alexander <[email protected]>
 *
 * This source file is subject to the license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Go\ParserReflection;

use Go\ParserReflection\Instrument\PathResolver;
use Go\ParserReflection\ValueResolver\NodeExpressionResolver;
use PhpParser\Node;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt\ClassLike;
use PhpParser\Node\Stmt\Const_;
use PhpParser\Node\Stmt\Expression;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\Namespace_;
use PhpParser\Node\Stmt\Use_;

/**
 * AST-based reflection for the concrete namespace in the file
 */
class ReflectionFileNamespace
{
    /**
     * List of classes in the namespace
     *
     * @var array|ReflectionClass[]
     */
    protected $fileClasses;

    /**
     * List of functions in the namespace
     *
     * @var array|ReflectionFunction[]
     */
    protected $fileFunctions;

    /**
     * List of constants in the namespace
     *
     * @var array
     */
    protected $fileConstants;

    /**
     * List of constants in the namespace including defined via "define(...)"
     *
     * @var array
     */
    protected $fileConstantsWithDefined;

    /**
     * List of imported namespaces (aliases)
     *
     * @var array
     */
    protected $fileNamespaceAliases;

    /**
     * Namespace node
     *
     * @var Namespace_
     */
    private $namespaceNode;

    /**
     * Name of the file
     *
     * @var string
     */
    private $fileName;

    /**
     * File namespace constructor
     *
     * @param string          $fileName      Name of the file
     * @param string          $namespaceName Name of the namespace
     * @param Namespace_|null $namespaceNode Optional AST-node for this namespace block
     */
    public function __construct(string $fileName, string $namespaceName, ?Namespace_ $namespaceNode = null)
    {
        $fileName = PathResolver::realpath($fileName);
        if (!$namespaceNode) {
            $namespaceNode = ReflectionEngine::parseFileNamespace($fileName, $namespaceName);
        }
        $this->namespaceNode = $namespaceNode;
        $this->fileName      = $fileName;
class Id
{
    public $id;

    public function __construct($id)
    {
        $this->id = $id;
    }

}

class Account
{
    /** @var  Id $id */
    public $id;
}

$account_id = false;

if (starsAreRight()) {
    $account_id = new Id(42);
}

$account = new Account();
if ($account instanceof Id)
{
    $account->id = $account_id;
}
    }

    /**
     * Returns the concrete class from the file namespace or false if there is no class
     *
     * @return bool|ReflectionClass
     */
    public function getClass(string $className)
    {
        if ($this->hasClass($className)) {
            return $this->fileClasses[$className];
        }

        return false;
    }

    /**
     * Gets list of classes in the namespace
     *
     * @return ReflectionClass[]
     */
    public function getClasses(): array
    {
        if (!isset($this->fileClasses)) {
            $this->fileClasses = $this->findClasses();
        }

        return $this->fileClasses;
    }

    /**
     * Returns a value for the constant
     *
     * @return bool|mixed
     */
    public function getConstant(string $constantName)
    {
        if ($this->hasConstant($constantName)) {
            return $this->fileConstants[$constantName];
        }

        return false;
    }

    /**
     * Returns a list of defined constants in the namespace
     *
     * @param bool $withDefined Include constants defined via "define(...)" in results.
     *
     * @return array
     */
    public function getConstants(bool $withDefined = false): array
    {
        if ($withDefined) {
            if (!isset($this->fileConstantsWithDefined)) {
                $this->fileConstantsWithDefined = $this->findConstants(true);
            }

            return $this->fileConstantsWithDefined;
        }

        if (!isset($this->fileConstants)) {
            $this->fileConstants = $this->findConstants();
        }

        return $this->fileConstants;
    }

    /**
     * Gets doc comments from a class.
     *
     * @return string|false The doc comment if it exists, otherwise "false"
     */
    public function getDocComment()
    {
        $docComment = false;
        $comments   = $this->namespaceNode->getAttribute('comments');

        if ($comments) {
            $docComment = (string)$comments[0];
        }

        return $docComment;
    }

    /**
     * Gets starting line number
     */
    public function getEndLine(): int
    {
        return $this->namespaceNode->getAttribute('endLine');
    }

    /**
     * Returns the name of file
     */
    public function getFileName(): string
    {
        return $this->fileName;
    }

    /**
     * Returns the concrete function from the file namespace or false if there is no function
     *
     * @return bool|ReflectionFunction
     */
    public function getFunction(string $functionName)
    {
        if ($this->hasFunction($functionName)) {
            return $this->fileFunctions[$functionName];
        }

        return false;
    }

    /**
     * Gets list of functions in the namespace
     *
     * @return ReflectionFunction[]
     */
    public function getFunctions(): array
    {
        if (!isset($this->fileFunctions)) {
            $this->fileFunctions = $this->findFunctions();
        }

        return $this->fileFunctions;
    }

    /**
     * Gets namespace name
     */
    public function getName(): string
    {
        $nameNode = $this->namespaceNode->name;

        return $nameNode ? $nameNode->toString() : '';
    }

    /**
     * Returns a list of namespace aliases
     */
    public function getNamespaceAliases(): array
    {
        if (!isset($this->fileNamespaceAliases)) {
            $this->fileNamespaceAliases = $this->findNamespaceAliases();
        }

        return $this->fileNamespaceAliases;
    }

    /**
     * Returns an AST-node for namespace
     */
    public function getNode(): ?Namespace_
    {
        return $this->namespaceNode;
    }

    /**
     * Helper method to access last token position for namespace
     *
     * This method is useful because namespace can be declared with braces or without them
     */
    public function getLastTokenPosition()
    {
        $endNamespaceTokenPosition = $this->namespaceNode->getAttribute('endTokenPos');

        /** @var Node $lastNamespaceNode */
        $lastNamespaceNode         = end($this->namespaceNode->stmts);
        $endStatementTokenPosition = $lastNamespaceNode->getAttribute('endTokenPos');

        return max($endNamespaceTokenPosition, $endStatementTokenPosition);
    }

    /**
     * Gets starting line number
     */
    public function getStartLine(): int
    {
        return $this->namespaceNode->getAttribute('startLine');
    }

    /**
     * Checks if the given class is present in this file namespace
     */
    public function hasClass(string $className): bool
    {
        $classes = $this->getClasses();

        return isset($classes[$className]);
    }

    /**
     * Checks if the given constant is present in this file namespace
     */
    public function hasConstant(string $constantName): bool
    {
        $constants = $this->getConstants();

        return isset($constants[$constantName]);
    }

    /**
     * Checks if the given function is present in this file namespace
     */
    public function hasFunction(string $functionName): bool
    {
        $functions = $this->getFunctions();

        return isset($functions[$functionName]);
    }

    /**
     * Searches for classes in the given AST
     *
     * @return ReflectionClass[]
     */
    private function findClasses(): array
    {
        $classes       = [];
        $namespaceName = $this->getName();
        // classes can be only top-level nodes in the namespace, so we can scan them directly
        foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
            if ($namespaceLevelNode instanceof ClassLike) {
                $classShortName = $namespaceLevelNode->name->toString();
                $className = $namespaceName ? $namespaceName .'\\' . $classShortName : $classShortName;

                $namespaceLevelNode->setAttribute('fileName', $this->fileName);
                $classes[$className] = new ReflectionClass($className, $namespaceLevelNode);
            }
        }

        return $classes;
    }

    /**
     * Searches for functions in the given AST
     *
     * @return ReflectionFunction[]
     */
    private function findFunctions(): array
    {
        $functions     = [];
        $namespaceName = $this->getName();

        // functions can be only top-level nodes in the namespace, so we can scan them directly
        foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
            if ($namespaceLevelNode instanceof Function_) {
                $funcShortName = $namespaceLevelNode->name->toString();
                $functionName  = $namespaceName ? $namespaceName .'\\' . $funcShortName : $funcShortName;

                $namespaceLevelNode->setAttribute('fileName', $this->fileName);
                $functions[$funcShortName] = new ReflectionFunction($functionName, $namespaceLevelNode);
            }
        }

        return $functions;
    }

    /**
     * Searches for constants in the given AST
     *
     * @param bool $withDefined Include constants defined via "define(...)" in results.
     *
     * @return array
     */
    private function findConstants(bool $withDefined = false): array
    {
        $constants        = [];
        $expressionSolver = new NodeExpressionResolver($this);

        // constants can be only top-level nodes in the namespace, so we can scan them directly
        foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
            if ($namespaceLevelNode instanceof Const_) {
                $nodeConstants = $namespaceLevelNode->consts;
                if (!empty($nodeConstants)) {
                    foreach ($nodeConstants as $nodeConstant) {
                        $expressionSolver->process($nodeConstant->value);
                        $constants[$nodeConstant->name->toString()] = $expressionSolver->getValue();
                    }
                }
            }
        }

        if ($withDefined) {
            foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
                if ($namespaceLevelNode instanceof Expression
                    && $namespaceLevelNode->expr instanceof FuncCall
                    && $namespaceLevelNode->expr->name instanceof Name
                    && (string)$namespaceLevelNode->expr->name === 'define'
                ) {
                    $functionCallNode = $namespaceLevelNode->expr;
                    $expressionSolver->process($functionCallNode->args[0]->value);
                    $constantName = $expressionSolver->getValue();

                    // Ignore constants, for which name can't be determined.
                    if (!empty($constantName)) {
                        $expressionSolver->process($functionCallNode->args[1]->value);
                        $constantValue = $expressionSolver->getValue();

                        $constants[$constantName] = $constantValue;
                    }
                }
            }
        }

        return $constants;
    }

    /**
     * Searches for namespace aliases for the current block
     */
    private function findNamespaceAliases(): array
    {
        $namespaceAliases = [];

        // aliases can be only top-level nodes in the namespace, so we can scan them directly
        foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
            if ($namespaceLevelNode instanceof Use_) {
                $useAliases = $namespaceLevelNode->uses;
                if (!empty($useAliases)) {
                    foreach ($useAliases as $useNode) {
                        $namespaceAliases[$useNode->name->toString()] = (string) $useNode->getAlias();
                    }
                }
            }
        }

        return $namespaceAliases;
    }
}


1		<?php
2		declare(strict_types=1);
3		/**
4		* Parser Reflection API
5		*
6		* @copyright Copyright 2015, Lisachenko Alexander <[email protected]>
7		*
8		* This source file is subject to the license that is bundled
9		* with this source code in the file LICENSE.
10		*/
11
12		namespace Go\ParserReflection;
13
14		use Go\ParserReflection\Instrument\PathResolver;
15		use Go\ParserReflection\ValueResolver\NodeExpressionResolver;
16		use PhpParser\Node;
17		use PhpParser\Node\Expr\FuncCall;
18		use PhpParser\Node\Name;
19		use PhpParser\Node\Stmt\ClassLike;
20		use PhpParser\Node\Stmt\Const_;
21		use PhpParser\Node\Stmt\Expression;
22		use PhpParser\Node\Stmt\Function_;
23		use PhpParser\Node\Stmt\Namespace_;
24		use PhpParser\Node\Stmt\Use_;
25
26		/**
27		* AST-based reflection for the concrete namespace in the file
28		*/
29		class ReflectionFileNamespace
30		{
31		/**
32		* List of classes in the namespace
33		*
34		* @var array\|ReflectionClass[]
35		*/
36		protected $fileClasses;
37
38		/**
39		* List of functions in the namespace
40		*
41		* @var array\|ReflectionFunction[]
42		*/
43		protected $fileFunctions;
44
45		/**
46		* List of constants in the namespace
47		*
48		* @var array
49		*/
50		protected $fileConstants;
51
52		/**
53		* List of constants in the namespace including defined via "define(...)"
54		*
55		* @var array
56		*/
57		protected $fileConstantsWithDefined;
58
59		/**
60		* List of imported namespaces (aliases)
61		*
62		* @var array
63		*/
64		protected $fileNamespaceAliases;
65
66		/**
67		* Namespace node
68		*
69		* @var Namespace_
70		*/
71		private $namespaceNode;
72
73		/**
74		* Name of the file
75		*
76		* @var string
77		*/
78		private $fileName;
79
80		/**
81		* File namespace constructor
82		*
83		* @param string $fileName Name of the file
84		* @param string $namespaceName Name of the namespace
85		* @param Namespace_\|null $namespaceNode Optional AST-node for this namespace block
86		*/
87	3040	public function __construct(string $fileName, string $namespaceName, ?Namespace_ $namespaceNode = null)
88		{
89	3040	$fileName = PathResolver::realpath($fileName);
90	3040	if (!$namespaceNode) {
91	24	$namespaceNode = ReflectionEngine::parseFileNamespace($fileName, $namespaceName);
92		}
93	3040	$this->namespaceNode = $namespaceNode;
94	3040	$this->fileName = $fileName;
		0 ignored issues – show Documentation Bug introduced 2016-09-25 10:39 UTC by Report Bug Copy Issue Report It seems like `$fileName` can also be of type `array` or `boolean`. However, the property `$fileName` is declared as type `string`. Maybe add an additional type check? Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly. For example, imagine you have a variable `$accountId` that can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to the `id` property of an instance of the `Account` class. This class holds a proper account, so the id value must no longer be false. Either this assignment is in error or a type check should be added for that assignment. class Id { public $id; public function __construct($id) { $this->id = $id; } } class Account { /** @var Id $id */ public $id; } $account_id = false; if (starsAreRight()) { $account_id = new Id(42); } $account = new Account(); if ($account instanceof Id) { $account->id = $account_id; } Loading history...
95	3040	}
96
97		/**
98		* Returns the concrete class from the file namespace or false if there is no class
99		*
100		* @return bool\|ReflectionClass
101		*/
102	3003	public function getClass(string $className)
103		{
104	3003	if ($this->hasClass($className)) {
105	3003	return $this->fileClasses[$className];
106		}
107
108	10	return false;
109		}
110
111		/**
112		* Gets list of classes in the namespace
113		*
114		* @return ReflectionClass[]
115		*/
116	3007	public function getClasses(): array
117		{
118	3007	if (!isset($this->fileClasses)) {
119	3007	$this->fileClasses = $this->findClasses();
120		}
121
122	3007	return $this->fileClasses;
123		}
124
125		/**
126		* Returns a value for the constant
127		*
128		* @return bool\|mixed
129		*/
130	15	public function getConstant(string $constantName)
131		{
132	15	if ($this->hasConstant($constantName)) {
133	15	return $this->fileConstants[$constantName];
134		}
135
136	2	return false;
137		}
138
139		/**
140		* Returns a list of defined constants in the namespace
141		*
142		* @param bool $withDefined Include constants defined via "define(...)" in results.
143		*
144		* @return array
145		*/
146	28	public function getConstants(bool $withDefined = false): array
147		{
148	28	if ($withDefined) {
149	2	if (!isset($this->fileConstantsWithDefined)) {
150	2	$this->fileConstantsWithDefined = $this->findConstants(true);
151		}
152
153	2	return $this->fileConstantsWithDefined;
154		}
155
156	27	if (!isset($this->fileConstants)) {
157	27	$this->fileConstants = $this->findConstants();
158		}
159
160	27	return $this->fileConstants;
161		}
162
163		/**
164		* Gets doc comments from a class.
165		*
166		* @return string\|false The doc comment if it exists, otherwise "false"
167		*/
168	1	public function getDocComment()
169		{
170	1	$docComment = false;
171	1	$comments = $this->namespaceNode->getAttribute('comments');
172
173	1	if ($comments) {
174	1	$docComment = (string)$comments[0];
175		}
176
177	1	return $docComment;
178		}
179
180		/**
181		* Gets starting line number
182		*/
183	1	public function getEndLine(): int
184		{
185	1	return $this->namespaceNode->getAttribute('endLine');
186		}
187
188		/**
189		* Returns the name of file
190		*/
191	4	public function getFileName(): string
192		{
193	4	return $this->fileName;
194		}
195
196		/**
197		* Returns the concrete function from the file namespace or false if there is no function
198		*
199		* @return bool\|ReflectionFunction
200		*/
201	9	public function getFunction(string $functionName)
202		{
203	9	if ($this->hasFunction($functionName)) {
204	9	return $this->fileFunctions[$functionName];
205		}
206
207	1	return false;
208		}
209
210		/**
211		* Gets list of functions in the namespace
212		*
213		* @return ReflectionFunction[]
214		*/
215	17	public function getFunctions(): array
216		{
217	17	if (!isset($this->fileFunctions)) {
218	17	$this->fileFunctions = $this->findFunctions();
219		}
220
221	17	return $this->fileFunctions;
222		}
223
224		/**
225		* Gets namespace name
226		*/
227	3029	public function getName(): string
228		{
229	3029	$nameNode = $this->namespaceNode->name;
230
231	3029	return $nameNode ? $nameNode->toString() : '';
232		}
233
234		/**
235		* Returns a list of namespace aliases
236		*/
237	1	public function getNamespaceAliases(): array
238		{
239	1	if (!isset($this->fileNamespaceAliases)) {
240	1	$this->fileNamespaceAliases = $this->findNamespaceAliases();
241		}
242
243	1	return $this->fileNamespaceAliases;
244		}
245
246		/**
247		* Returns an AST-node for namespace
248		*/
249		public function getNode(): ?Namespace_
250		{
251		return $this->namespaceNode;
252		}
253
254		/**
255		* Helper method to access last token position for namespace
256		*
257		* This method is useful because namespace can be declared with braces or without them
258		*/
259		public function getLastTokenPosition()
260		{
261		$endNamespaceTokenPosition = $this->namespaceNode->getAttribute('endTokenPos');
262
263		/** @var Node $lastNamespaceNode */
264		$lastNamespaceNode = end($this->namespaceNode->stmts);
265		$endStatementTokenPosition = $lastNamespaceNode->getAttribute('endTokenPos');
266
267		return max($endNamespaceTokenPosition, $endStatementTokenPosition);
268		}
269
270		/**
271		* Gets starting line number
272		*/
273	1	public function getStartLine(): int
274		{
275	1	return $this->namespaceNode->getAttribute('startLine');
276		}
277
278		/**
279		* Checks if the given class is present in this file namespace
280		*/
281	3004	public function hasClass(string $className): bool
282		{
283	3004	$classes = $this->getClasses();
284
285	3004	return isset($classes[$className]);
286		}
287
288		/**
289		* Checks if the given constant is present in this file namespace
290		*/
291	27	public function hasConstant(string $constantName): bool
292		{
293	27	$constants = $this->getConstants();
294
295	27	return isset($constants[$constantName]);
296		}
297
298		/**
299		* Checks if the given function is present in this file namespace
300		*/
301	10	public function hasFunction(string $functionName): bool
302		{
303	10	$functions = $this->getFunctions();
304
305	10	return isset($functions[$functionName]);
306		}
307
308		/**
309		* Searches for classes in the given AST
310		*
311		* @return ReflectionClass[]
312		*/
313	3007	private function findClasses(): array
314		{
315	3007	$classes = [];
316	3007	$namespaceName = $this->getName();
317		// classes can be only top-level nodes in the namespace, so we can scan them directly
318	3007	foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
319	3007	if ($namespaceLevelNode instanceof ClassLike) {
320	3007	$classShortName = $namespaceLevelNode->name->toString();
321	3007	$className = $namespaceName ? $namespaceName .'\\' . $classShortName : $classShortName;
322
323	3007	$namespaceLevelNode->setAttribute('fileName', $this->fileName);
324	3007	$classes[$className] = new ReflectionClass($className, $namespaceLevelNode);
325		}
326		}
327
328	3007	return $classes;
329		}
330
331		/**
332		* Searches for functions in the given AST
333		*
334		* @return ReflectionFunction[]
335		*/
336	17	private function findFunctions(): array
337		{
338	17	$functions = [];
339	17	$namespaceName = $this->getName();
340
341		// functions can be only top-level nodes in the namespace, so we can scan them directly
342	17	foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
343	17	if ($namespaceLevelNode instanceof Function_) {
344	17	$funcShortName = $namespaceLevelNode->name->toString();
345	17	$functionName = $namespaceName ? $namespaceName .'\\' . $funcShortName : $funcShortName;
346
347	17	$namespaceLevelNode->setAttribute('fileName', $this->fileName);
348	17	$functions[$funcShortName] = new ReflectionFunction($functionName, $namespaceLevelNode);
349		}
350		}
351
352	17	return $functions;
353		}
354
355		/**
356		* Searches for constants in the given AST
357		*
358		* @param bool $withDefined Include constants defined via "define(...)" in results.
359		*
360		* @return array
361		*/
362	28	private function findConstants(bool $withDefined = false): array
363		{
364	28	$constants = [];
365	28	$expressionSolver = new NodeExpressionResolver($this);
366
367		// constants can be only top-level nodes in the namespace, so we can scan them directly
368	28	foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
369	28	if ($namespaceLevelNode instanceof Const_) {
370	26	$nodeConstants = $namespaceLevelNode->consts;
371	26	if (!empty($nodeConstants)) {
372	26	foreach ($nodeConstants as $nodeConstant) {
373	26	$expressionSolver->process($nodeConstant->value);
374	26	$constants[$nodeConstant->name->toString()] = $expressionSolver->getValue();
375		}
376		}
377		}
378		}
379
380	28	if ($withDefined) {
381	2	foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
382	2	if ($namespaceLevelNode instanceof Expression
383	2	&& $namespaceLevelNode->expr instanceof FuncCall
384	2	&& $namespaceLevelNode->expr->name instanceof Name
385	2	&& (string)$namespaceLevelNode->expr->name === 'define'
386		) {
387	2	$functionCallNode = $namespaceLevelNode->expr;
388	2	$expressionSolver->process($functionCallNode->args[0]->value);
389	2	$constantName = $expressionSolver->getValue();
390
391		// Ignore constants, for which name can't be determined.
392	2	if (!empty($constantName)) {
393	2	$expressionSolver->process($functionCallNode->args[1]->value);
394	2	$constantValue = $expressionSolver->getValue();
395
396	2	$constants[$constantName] = $constantValue;
397		}
398		}
399		}
400		}
401
402	28	return $constants;
403		}
404
405		/**
406		* Searches for namespace aliases for the current block
407		*/
408	1	private function findNamespaceAliases(): array
409		{
410	1	$namespaceAliases = [];
411
412		// aliases can be only top-level nodes in the namespace, so we can scan them directly
413	1	foreach ($this->namespaceNode->stmts as $namespaceLevelNode) {
414	1	if ($namespaceLevelNode instanceof Use_) {
415	1	$useAliases = $namespaceLevelNode->uses;
416	1	if (!empty($useAliases)) {
417	1	foreach ($useAliases as $useNode) {
418	1	$namespaceAliases[$useNode->name->toString()] = (string) $useNode->getAlias();
419		}
420		}
421		}
422		}
423
424	1	return $namespaceAliases;
425		}
426		}
427

goaop / parser-reflection

Pull Request — master (#107)

ReflectionFileNamespace::findNamespaceAliases() A

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