21636962765

Committed 03 Feb 2026 03:39PM UTC coverage: 93.312% (+0.05%) from 93.264%

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added CLAUDE.md

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/src/Utils/Reflection.php

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Utils;

use Nette;
use function constant, current, defined, end, explode, file_get_contents, implode, ltrim, next, ord, strrchr, strtolower, substr;
use const T_AS, T_CLASS, T_COMMENT, T_CURLY_OPEN, T_DOC_COMMENT, T_DOLLAR_OPEN_CURLY_BRACES, T_ENUM, T_INTERFACE, T_NAME_FULLY_QUALIFIED, T_NAME_QUALIFIED, T_NAMESPACE, T_NS_SEPARATOR, T_STRING, T_TRAIT, T_USE, T_WHITESPACE, TOKEN_PARSE;


/**
 * PHP reflection helpers.
 */
final class Reflection
{
        use Nette\StaticClass;

        /** @deprecated use Nette\Utils\Validators::isBuiltinType() */
        public static function isBuiltinType(string $type): bool
        {
                return Validators::isBuiltinType($type);
        }


        #[\Deprecated('use Nette\Utils\Validators::isClassKeyword()')]
        public static function isClassKeyword(string $name): bool
        {
                return Validators::isClassKeyword($name);
        }


        public static function getParameterDefaultValue(\ReflectionParameter $param): mixed
        {
                if ($param->isDefaultValueConstant()) {
                        $const = $orig = $param->getDefaultValueConstantName();
                        $pair = explode('::', $const);
                        if (isset($pair[1])) {
                                $pair[0] = Type::resolve($pair[0], $param);
                                try {
                                        $rcc = new \ReflectionClassConstant($pair[0], $pair[1]);
                                } catch (\ReflectionException $e) {
                                        $name = self::toString($param);
                                        throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.", 0, $e);
                                }

                                return $rcc->getValue();

                        } elseif (!defined($const)) {
                                $const = substr((string) strrchr($const, '\\'), 1);
                                if (!defined($const)) {
                                        $name = self::toString($param);
                                        throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.");
                                }
                        }

                        return constant($const);
                }

                return $param->getDefaultValue();
        }


        /**
         * Returns a reflection of a class or trait that contains a declaration of given property. Property can also be declared in the trait.
         * @return \ReflectionClass<object>
         */
        public static function getPropertyDeclaringClass(\ReflectionProperty $prop): \ReflectionClass
        {
                foreach ($prop->getDeclaringClass()->getTraits() as $trait) {
                        if ($trait->hasProperty($prop->name)
                                // doc-comment guessing as workaround for insufficient PHP reflection
                                && $trait->getProperty($prop->name)->getDocComment() === $prop->getDocComment()
                        ) {
                                return self::getPropertyDeclaringClass($trait->getProperty($prop->name));
                        }
                }

                return $prop->getDeclaringClass();
        }


        /**
         * Returns a reflection of a method that contains a declaration of $method.
         * Usually, each method is its own declaration, but the body of the method can also be in the trait and under a different name.
         */
        public static function getMethodDeclaringMethod(\ReflectionMethod $method): \ReflectionMethod
        {
                // file & line guessing as workaround for insufficient PHP reflection
                $decl = $method->getDeclaringClass();
                if ($decl->getFileName() === $method->getFileName()
                        && $decl->getStartLine() <= $method->getStartLine()
                        && $decl->getEndLine() >= $method->getEndLine()
                ) {
                        return $method;
                }

                $hash = [$method->getFileName(), $method->getStartLine(), $method->getEndLine()];
                if (($alias = $decl->getTraitAliases()[$method->name] ?? null)
                        && ($m = new \ReflectionMethod(...explode('::', $alias, 2)))
                        && $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]
                ) {
                        return self::getMethodDeclaringMethod($m);
                }

                foreach ($decl->getTraits() as $trait) {
                        if ($trait->hasMethod($method->name)
                                && ($m = $trait->getMethod($method->name))
                                && $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]
                        ) {
                                return self::getMethodDeclaringMethod($m);
                        }
                }

                return $method;
        }


        /**
         * Finds out if reflection has access to PHPdoc comments. Comments may not be available due to the opcode cache.
         */
        public static function areCommentsAvailable(): bool
        {
                static $res;
                return $res ?? $res = (bool) (new \ReflectionMethod(self::class, __FUNCTION__))->getDocComment();
        }


        public static function toString(\Reflector $ref): string
        {
                if ($ref instanceof \ReflectionClass) {
                        return $ref->name;
                } elseif ($ref instanceof \ReflectionMethod) {
                        return $ref->getDeclaringClass()->name . '::' . $ref->name . '()';
                } elseif ($ref instanceof \ReflectionFunction) {
                        return $ref->isAnonymous() ? '{closure}()' : $ref->name . '()';
                } elseif ($ref instanceof \ReflectionProperty) {
                        return self::getPropertyDeclaringClass($ref)->name . '::$' . $ref->name;
                } elseif ($ref instanceof \ReflectionParameter) {
                        return '$' . $ref->name . ' in ' . self::toString($ref->getDeclaringFunction());
                } else {
                        throw new Nette\InvalidArgumentException;
                }
        }


        /**
         * Expands the name of the class to full name in the given context of given class.
         * Thus, it returns how the PHP parser would understand $name if it were written in the body of the class $context.
         * @param  \ReflectionClass<object>  $context
         * @throws Nette\InvalidArgumentException
         */
        public static function expandClassName(string $name, \ReflectionClass $context): string
        {
                $lower = strtolower($name);
                if (empty($name)) {
                        throw new Nette\InvalidArgumentException('Class name must not be empty.');

                } elseif (Validators::isBuiltinType($lower)) {
                        return $lower;

                } elseif ($lower === 'self' || $lower === 'static') {
                        return $context->name;

                } elseif ($lower === 'parent') {
                        return $context->getParentClass()
                                ? $context->getParentClass()->name
                                : 'parent';

                } elseif ($name[0] === '\\') { // fully qualified name
                        return ltrim($name, '\\');
                }

                $uses = self::getUseStatements($context);
                $parts = explode('\\', $name, 2);
                if (isset($uses[$parts[0]])) {
                        $parts[0] = $uses[$parts[0]];
                        return implode('\\', $parts);

                } elseif ($context->inNamespace()) {
                        return $context->getNamespaceName() . '\\' . $name;

                } else {
                        return $name;
                }
        }


        /**
         * @param  \ReflectionClass<object>  $class
         * @return array<string, class-string> of [alias => class]
         */
        public static function getUseStatements(\ReflectionClass $class): array
        {
                if ($class->isAnonymous()) {
                        throw new Nette\NotImplementedException('Anonymous classes are not supported.');
                }

                static $cache = [];
                if (!isset($cache[$name = $class->name])) {
                        if ($class->isInternal()) {
                                $cache[$name] = [];
                        } else {
                                $code = file_get_contents($class->getFileName());
                                $cache = self::parseUseStatements($code, $name) + $cache;
                        }
                }

                return $cache[$name];
        }


        /**
         * Parses PHP code to [class => [alias => class, ...]]
         * @return array<class-string, array<string, class-string>>
         */
        private static function parseUseStatements(string $code, ?string $forClass = null): array
        {
                try {
                        $tokens = \PhpToken::tokenize($code, TOKEN_PARSE);
                } catch (\ParseError $e) {
                        trigger_error($e->getMessage(), E_USER_NOTICE);
                        $tokens = [];
                }

                $namespace = $class = null;
                $classLevel = $level = 0;
                $res = $uses = [];

                $nameTokens = [T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED];

                while ($token = current($tokens)) {
                        next($tokens);
                        switch ($token->id) {
                                case T_NAMESPACE:
                                        $namespace = ltrim(self::fetch($tokens, $nameTokens) . '\\', '\\');
                                        $uses = [];
                                        break;

                                case T_CLASS:
                                case T_INTERFACE:
                                case T_TRAIT:
                                case T_ENUM:
                                        if ($name = self::fetch($tokens, T_STRING)) {
                                                $class = $namespace . $name;
                                                $classLevel = $level + 1;
                                                $res[$class] = $uses;
                                                if ($class === $forClass) {
                                                        return $res;
                                                }
                                        }

                                        break;

                                case T_USE:
                                        while (!$class && ($name = self::fetch($tokens, $nameTokens))) {
                                                $name = ltrim($name, '\\');
                                                if (self::fetch($tokens, '{')) {
                                                        while ($suffix = self::fetch($tokens, $nameTokens)) {
                                                                if (self::fetch($tokens, T_AS)) {
                                                                        $uses[self::fetch($tokens, T_STRING)] = $name . $suffix;
                                                                } else {
                                                                        $tmp = explode('\\', $suffix);
                                                                        $uses[end($tmp)] = $name . $suffix;
                                                                }

                                                                if (!self::fetch($tokens, ',')) {
                                                                        break;
                                                                }
                                                        }
                                                } elseif (self::fetch($tokens, T_AS)) {
                                                        $uses[self::fetch($tokens, T_STRING)] = $name;

                                                } else {
                                                        $tmp = explode('\\', $name);
                                                        $uses[end($tmp)] = $name;
                                                }

                                                if (!self::fetch($tokens, ',')) {
                                                        break;
                                                }
                                        }

                                        break;

                                case T_CURLY_OPEN:
                                case T_DOLLAR_OPEN_CURLY_BRACES:
                                case ord('{'):
                                        $level++;
                                        break;

                                case ord('}'):
                                        if ($level === $classLevel) {
                                                $class = $classLevel = 0;
                                        }

                                        $level--;
                        }
                }

                return $res;
        }


        /**
         * @param  \PhpToken[]  $tokens
         * @param  string|int|int[]  $take
         */
        private static function fetch(array &$tokens, string|int|array $take): ?string
        {
                $res = null;
                while ($token = current($tokens)) {
                        if ($token->is($take)) {
                                $res .= $token->text;
                        } elseif (!$token->is([T_DOC_COMMENT, T_WHITESPACE, T_COMMENT])) {
                                break;
                        }

                        next($tokens);
                }

                return $res;
        }
}

1	<?php
2
3	/**
4	* This file is part of the Nette Framework (https://nette.org)
5	* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
6	*/
7
8	declare(strict_types=1);
9
10	namespace Nette\Utils;
11
12	use Nette;
13	use function constant, current, defined, end, explode, file_get_contents, implode, ltrim, next, ord, strrchr, strtolower, substr;
14	use const T_AS, T_CLASS, T_COMMENT, T_CURLY_OPEN, T_DOC_COMMENT, T_DOLLAR_OPEN_CURLY_BRACES, T_ENUM, T_INTERFACE, T_NAME_FULLY_QUALIFIED, T_NAME_QUALIFIED, T_NAMESPACE, T_NS_SEPARATOR, T_STRING, T_TRAIT, T_USE, T_WHITESPACE, TOKEN_PARSE;
15
16
17	/**
18	* PHP reflection helpers.
19	*/
20	final class Reflection
21	{
22	use Nette\StaticClass;
23
24	/** @deprecated use Nette\Utils\Validators::isBuiltinType() */
25	public static function isBuiltinType(string $type): bool
26	{
27	return Validators::isBuiltinType($type);	×
28	}
29
30
31	#[\Deprecated('use Nette\Utils\Validators::isClassKeyword()')]
32	public static function isClassKeyword(string $name): bool
33	{
34	return Validators::isClassKeyword($name);	×
35	}
36
37
38	public static function getParameterDefaultValue(\ReflectionParameter $param): mixed	1✔
39	{
40	if ($param->isDefaultValueConstant()) {	1✔
41	$const = $orig = $param->getDefaultValueConstantName();	1✔
42	$pair = explode('::', $const);	1✔
43	if (isset($pair[1])) {	1✔
44	$pair[0] = Type::resolve($pair[0], $param);	1✔
45	try {
46	$rcc = new \ReflectionClassConstant($pair[0], $pair[1]);	1✔
47	} catch (\ReflectionException $e) {	1✔
48	$name = self::toString($param);	1✔
49	throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.", 0, $e);	1✔
50	}
51
52	return $rcc->getValue();	1✔
53
54	} elseif (!defined($const)) {	1✔
55	$const = substr((string) strrchr($const, '\\'), 1);	1✔
56	if (!defined($const)) {	1✔
57	$name = self::toString($param);	1✔
58	throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.");	1✔
59	}
60	}
61
62	return constant($const);	1✔
63	}
64
65	return $param->getDefaultValue();	×
66	}
67
68
69	/**
70	* Returns a reflection of a class or trait that contains a declaration of given property. Property can also be declared in the trait.
71	* @return \ReflectionClass<object>
72	*/
73	public static function getPropertyDeclaringClass(\ReflectionProperty $prop): \ReflectionClass	1✔
74	{
75	foreach ($prop->getDeclaringClass()->getTraits() as $trait) {	1✔
76	if ($trait->hasProperty($prop->name)	1✔
77	// doc-comment guessing as workaround for insufficient PHP reflection
78	&& $trait->getProperty($prop->name)->getDocComment() === $prop->getDocComment()	1✔
79	) {
80	return self::getPropertyDeclaringClass($trait->getProperty($prop->name));	1✔
81	}
82	}
83
84	return $prop->getDeclaringClass();	1✔
85	}
86
87
88	/**
89	* Returns a reflection of a method that contains a declaration of $method.
90	* Usually, each method is its own declaration, but the body of the method can also be in the trait and under a different name.
91	*/
92	public static function getMethodDeclaringMethod(\ReflectionMethod $method): \ReflectionMethod	1✔
93	{
94	// file & line guessing as workaround for insufficient PHP reflection
95	$decl = $method->getDeclaringClass();	1✔
96	if ($decl->getFileName() === $method->getFileName()	1✔
97	&& $decl->getStartLine() <= $method->getStartLine()	1✔
98	&& $decl->getEndLine() >= $method->getEndLine()	1✔
99	) {
100	return $method;	1✔
101	}
102
103	$hash = [$method->getFileName(), $method->getStartLine(), $method->getEndLine()];	1✔
104	if (($alias = $decl->getTraitAliases()[$method->name] ?? null)	1✔
105	&& ($m = new \ReflectionMethod(...explode('::', $alias, 2)))	1✔
106	&& $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]	1✔
107	) {
108	return self::getMethodDeclaringMethod($m);	1✔
109	}
110
111	foreach ($decl->getTraits() as $trait) {	1✔
112	if ($trait->hasMethod($method->name)	1✔
113	&& ($m = $trait->getMethod($method->name))	1✔
114	&& $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]	1✔
115	) {
116	return self::getMethodDeclaringMethod($m);	1✔
117	}
118	}
119
120	return $method;	×
121	}
122
123
124	/**
125	* Finds out if reflection has access to PHPdoc comments. Comments may not be available due to the opcode cache.
126	*/
127	public static function areCommentsAvailable(): bool
128	{
129	static $res;	×
130	return $res ?? $res = (bool) (new \ReflectionMethod(self::class, __FUNCTION__))->getDocComment();	×
131	}
132
133
134	public static function toString(\Reflector $ref): string	1✔
135	{
136	if ($ref instanceof \ReflectionClass) {	1✔
137	return $ref->name;	1✔
138	} elseif ($ref instanceof \ReflectionMethod) {	1✔
139	return $ref->getDeclaringClass()->name . '::' . $ref->name . '()';	1✔
140	} elseif ($ref instanceof \ReflectionFunction) {	1✔
141	return $ref->isAnonymous() ? '{closure}()' : $ref->name . '()';	1✔
142	} elseif ($ref instanceof \ReflectionProperty) {	1✔
143	return self::getPropertyDeclaringClass($ref)->name . '::$' . $ref->name;	1✔
144	} elseif ($ref instanceof \ReflectionParameter) {	1✔
145	return '$' . $ref->name . ' in ' . self::toString($ref->getDeclaringFunction());	1✔
146	} else {
147	throw new Nette\InvalidArgumentException;	×
148	}
149	}
150
151
152	/**
153	* Expands the name of the class to full name in the given context of given class.
154	* Thus, it returns how the PHP parser would understand $name if it were written in the body of the class $context.
155	* @param \ReflectionClass<object> $context
156	* @throws Nette\InvalidArgumentException
157	*/
158	public static function expandClassName(string $name, \ReflectionClass $context): string	1✔
159	{
160	$lower = strtolower($name);	1✔
161	if (empty($name)) {	1✔
162	throw new Nette\InvalidArgumentException('Class name must not be empty.');	1✔
163
164	} elseif (Validators::isBuiltinType($lower)) {	1✔
165	return $lower;	1✔
166
167	} elseif ($lower === 'self' \|\| $lower === 'static') {	1✔
168	return $context->name;	1✔
169
170	} elseif ($lower === 'parent') {	1✔
171	return $context->getParentClass()	1✔
172	? $context->getParentClass()->name	1✔
173	: 'parent';	1✔
174
175	} elseif ($name[0] === '\\') { // fully qualified name	1✔
176	return ltrim($name, '\\');	1✔
177	}
178
179	$uses = self::getUseStatements($context);	1✔
180	$parts = explode('\\', $name, 2);	1✔
181	if (isset($uses[$parts[0]])) {	1✔
182	$parts[0] = $uses[$parts[0]];	1✔
183	return implode('\\', $parts);	1✔
184
185	} elseif ($context->inNamespace()) {	1✔
186	return $context->getNamespaceName() . '\\' . $name;	1✔
187
188	} else {
189	return $name;	1✔
190	}
191	}
192
193
194	/**
195	* @param \ReflectionClass<object> $class
196	* @return array<string, class-string> of [alias => class]
197	*/
198	public static function getUseStatements(\ReflectionClass $class): array	1✔
199	{
200	if ($class->isAnonymous()) {	1✔
201	throw new Nette\NotImplementedException('Anonymous classes are not supported.');	1✔
202	}
203
204	static $cache = [];	1✔
205	if (!isset($cache[$name = $class->name])) {	1✔
206	if ($class->isInternal()) {	1✔
207	$cache[$name] = [];	1✔
208	} else {
209	$code = file_get_contents($class->getFileName());	1✔
210	$cache = self::parseUseStatements($code, $name) + $cache;	1✔
211	}
212	}
213
214	return $cache[$name];	1✔
215	}
216
217
218	/**
219	* Parses PHP code to [class => [alias => class, ...]]
220	* @return array<class-string, array<string, class-string>>
221	*/
222	private static function parseUseStatements(string $code, ?string $forClass = null): array	1✔
223	{
224	try {
225	$tokens = \PhpToken::tokenize($code, TOKEN_PARSE);	1✔
226	} catch (\ParseError $e) {	×
227	trigger_error($e->getMessage(), E_USER_NOTICE);	×
228	$tokens = [];	×
229	}
230
231	$namespace = $class = null;	1✔
232	$classLevel = $level = 0;	1✔
233	$res = $uses = [];	1✔
234
235	$nameTokens = [T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED];	1✔
236
237	while ($token = current($tokens)) {	1✔
238	next($tokens);	1✔
239	switch ($token->id) {	1✔
240	case T_NAMESPACE:
241	$namespace = ltrim(self::fetch($tokens, $nameTokens) . '\\', '\\');	1✔
242	$uses = [];	1✔
243	break;	1✔
244
245	case T_CLASS:
246	case T_INTERFACE:
247	case T_TRAIT:
248	case T_ENUM:
249	if ($name = self::fetch($tokens, T_STRING)) {	1✔
250	$class = $namespace . $name;	1✔
251	$classLevel = $level + 1;	1✔
252	$res[$class] = $uses;	1✔
253	if ($class === $forClass) {	1✔
254	return $res;	1✔
255	}
256	}
257
258	break;	1✔
259
260	case T_USE:
261	while (!$class && ($name = self::fetch($tokens, $nameTokens))) {	1✔
262	$name = ltrim($name, '\\');	1✔
263	if (self::fetch($tokens, '{')) {	1✔
264	while ($suffix = self::fetch($tokens, $nameTokens)) {	1✔
265	if (self::fetch($tokens, T_AS)) {	1✔
266	$uses[self::fetch($tokens, T_STRING)] = $name . $suffix;	1✔
267	} else {
268	$tmp = explode('\\', $suffix);	1✔
269	$uses[end($tmp)] = $name . $suffix;	1✔
270	}
271
272	if (!self::fetch($tokens, ',')) {	1✔
273	break;	1✔
274	}
275	}
276	} elseif (self::fetch($tokens, T_AS)) {	1✔
277	$uses[self::fetch($tokens, T_STRING)] = $name;	1✔
278
279	} else {
280	$tmp = explode('\\', $name);	1✔
281	$uses[end($tmp)] = $name;	1✔
282	}
283
284	if (!self::fetch($tokens, ',')) {	1✔
285	break;	1✔
286	}
287	}
288
289	break;	1✔
290
291	case T_CURLY_OPEN:
292	case T_DOLLAR_OPEN_CURLY_BRACES:
293	case ord('{'):	1✔
294	$level++;	1✔
295	break;	1✔
296
297	case ord('}'):	1✔
298	if ($level === $classLevel) {	1✔
299	$class = $classLevel = 0;	1✔
300	}
301
302	$level--;	1✔
303	}
304	}
305
306	return $res;	×
307	}
308
309
310	/**
311	* @param \PhpToken[] $tokens
312	* @param string\|int\|int[] $take
313	*/
314	private static function fetch(array &$tokens, string\|int\|array $take): ?string	1✔
315	{
316	$res = null;	1✔
317	while ($token = current($tokens)) {	1✔
318	if ($token->is($take)) {	1✔
319	$res .= $token->text;	1✔
320	} elseif (!$token->is([T_DOC_COMMENT, T_WHITESPACE, T_COMMENT])) {	1✔
321	break;	1✔
322	}
323
324	next($tokens);	1✔
325	}
326
327	return $res;	1✔
328	}
329	}

nette / utils / 21636962765

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