Generator::getReflectionClass() - Code Metrics - saxulum/saxulum-lazy-service - Measure and Improve Code Quality continuously with Scrutinizer

Generator::getReflectionClass() A
last analyzed 2018-04-20 16:31 UTC

↳ Parent: Generator

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	4
nc	2
nop	1

<?php

namespace Saxulum\LazyService;

use PhpParser\Node\Arg;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\Array_;
use PhpParser\Node\Expr\ArrayItem;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\BinaryOp\Identical;
use PhpParser\Node\Expr\ConstFetch;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\Expr\PropertyFetch;
use PhpParser\Node\Expr\Variable;
use PhpParser\Node\Name;
use PhpParser\Node\Param;
use PhpParser\Node\Scalar\DNumber;
use PhpParser\Node\Scalar\LNumber;
use PhpParser\Node\Scalar\String_;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\If_;
use PhpParser\Node\Stmt\Namespace_;
use PhpParser\Node\Stmt\Property;
use PhpParser\Node\Stmt\PropertyProperty;
use PhpParser\Node\Stmt\Return_;
use PhpParser\PrettyPrinter\Standard as PhpGenerator;

class Generator
{
    const PROP_CONTAINER = '__container';
    const PROP_ORIGINAL = '__original';

    /**
     * @var PhpGenerator
     */
    protected $phpGenerator;

    /**
     * @param PhpGenerator $phpGenerator
     */
    public function __construct(PhpGenerator $phpGenerator)
    {
        $this->phpGenerator = $phpGenerator;
    }

    /**
     * @param Mapping $mapping
     * @param string  $path
     *
     * @return string
     */
    public function generate(Mapping $mapping, $path)
    {
        $nodes = array_merge(
            $this->generatePropertyNodes(),
            $this->generateMethodNodes($mapping)
        );

        $lazyNamespaceParts = explode('\\', $mapping->getLazyClass());
        $lazyClass = array_pop($lazyNamespaceParts);

        $classNode = new Namespace_(
            new Name(implode('\\', $lazyNamespaceParts)), array(
                new Class_($lazyClass, array(
                    'extends' => new Name('\\' . $mapping->getOriginalClass()),
                    'stmts' => $nodes,
                )),
            )
        );

        $phpCode = '<?php' . "\n\n" . $this->phpGenerator->prettyPrint(array($classNode));

        file_put_contents($path . DIRECTORY_SEPARATOR . $lazyClass . '.php', $phpCode);
    }

    /**
     * @param string $class
     *
     * @return \ReflectionClass
     *
     * @throws \Exception
     */
    protected function getReflectionClass($class)
    {
        if (!class_exists($class)) {
            throw new \Exception(sprintf('Unknown class: %s', $class));
        }

        return new \ReflectionClass($class);
    }

    /**
     * @return Property[]
     */
    protected function generatePropertyNodes()
    {
        return array(
            new Property(2,
                array(
                    new PropertyProperty(self::PROP_CONTAINER),
                )
            ),
            new Property(2,
                array(
                    new PropertyProperty(self::PROP_ORIGINAL),
                )
            ),
        );
    }

    /**
     * @param Mapping $mapping
     *
     * @return ClassMethod[]
     */
    protected function generateMethodNodes(Mapping $mapping)
    {
        $reflectionClass = $this->getReflectionClass($mapping->getOriginalClass());

        $classMethodNodes = array();
        foreach ($reflectionClass->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
            if ($reflectionMethod->getName() === '__construct') {
                $classMethodNodes[] = $this->generateMethodConstructNode();
                $classMethodNodes[] = $this->generateMethodOriginalNode($mapping, $reflectionMethod);
            } else {
                $classMethodNodes[] = $this->generateMethodNode($reflectionMethod);
            }
        }

        return $classMethodNodes;
    }

    /**
     * @return ClassMethod
     */
    protected function generateMethodConstructNode()
    {
        return new ClassMethod('__construct', array(
            'type' => 1,
            'params' => array(
                new Param(
                    'container',
                    null,
                    '\Saxulum\LazyService\Container\ReaderInterface'
                ),
            ),
            'stmts' => array(
                new Assign(
                    new PropertyFetch(new Variable('this'), self::PROP_CONTAINER),
                    new Variable('container')
                ),
            ),
        ));
    }

    /**
     * @param Mapping           $mapping
     * @param \ReflectionMethod $reflectionMethod
     *
     * @return ClassMethod
     */
    protected function generateMethodOriginalNode(Mapping $mapping, $reflectionMethod)
    {
        $constructArgumentsByName = $this->getConstructArgumentsByName($mapping);
        $args = $this->generateOriginalArgumentNodes($reflectionMethod, $constructArgumentsByName);

        return new ClassMethod(self::PROP_ORIGINAL, array(
            'type' => 2,
            'stmts' => array(
                new If_(
                    new Expr\BinaryOp\Identical(
                        new ConstFetch(new Name('null')),
                        new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL)
                    ),
                    array(
                        'stmts' => array(
                            new Assign(
                                new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL),
                                new New_(new Name('\\' . $mapping->getOriginalClass()), $args)
                            ),
                        ),
                    )
                ),
                new Return_(
                    new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL)
                ),
            ),
        ));
    }

    /**
     * @param Mapping $mapping
     *
     * @return ConstructArgument[]
     */
    protected function getConstructArgumentsByName(Mapping $mapping)
    {
        $constructArgumentsByName = array();
        foreach ($mapping->getOriginalClassConstructArguments() as $constructArgument) {
            $constructArgumentsByName[$constructArgument->getName()] = $constructArgument;
        }

        return $constructArgumentsByName;
    }

    /**
     * @param \ReflectionMethod   $reflectionMethod
     * @param ConstructArgument[] $constructArgumentsByName
     *
     * @return Arg[]
     */
    protected function generateOriginalArgumentNodes(\ReflectionMethod $reflectionMethod, array $constructArgumentsByName)
    {
        $args = array();
        foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
            if (isset($constructArgumentsByName[$reflectionParameter->getName()])) {
                $constructArgument = $constructArgumentsByName[$reflectionParameter->getName()];
                $args[] = new MethodCall(
                    new PropertyFetch(new Variable('this'), self::PROP_CONTAINER),
                    $constructArgument->getContainerMethod(),
                    array(
                        new Arg(new String_($constructArgument->getContainerKey())),
                    )
                );
            } else {
                $args[] = new Arg(new ConstFetch(new Name('null')));
            }
        }

        return $args;
    }

    /**
     * @param \ReflectionMethod $reflectionMethod
     *
     * @return ClassMethod
     */
    protected function generateMethodNode(\ReflectionMethod $reflectionMethod)
    {
        return new ClassMethod($reflectionMethod->getName(), array(
            'type' => 1,
            'params' => $this->generateParameterNodes($reflectionMethod),
            'stmts' => array(
                new Return_(
                    new MethodCall(
                        new MethodCall(new Variable('this'), self::PROP_ORIGINAL),
                        $reflectionMethod->getName(),
                        $this->generateArgumentNodes($reflectionMethod)
                    )
                ),
            ),
        ));
    }

    /**
     * @param \ReflectionMethod $reflectionMethod
     *
     * @return Expr[]
     */
    protected function generateParameterNodes(\ReflectionMethod $reflectionMethod)
    {
        $params = array();
        foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
            $params[] = $this->generateParameterNode($reflectionParameter);
        }

        return $params;
    }

    /**
     * @param \ReflectionMethod $reflectionMethod
     *
     * @return Arg[]
     */
    protected function generateArgumentNodes(\ReflectionMethod $reflectionMethod)
    {
        $args = array();
        foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
            $args[] = new Arg(new Variable($reflectionParameter->getName()));
        }

        return $args;
    }

    /**
     * @param \ReflectionParameter $reflectionParameter
     *
     * @return Param
     */
    protected function generateParameterNode(\ReflectionParameter $reflectionParameter)
    {
        return new Param(
            $reflectionParameter->getName(),
            $this->getParameterDefault($reflectionParameter),
            $this->getParameterTypeHint($reflectionParameter),
            $reflectionParameter->isPassedByReference(),
            $this->isParameterVariadic($reflectionParameter)
        );
    }

    /**
     * @param \ReflectionParameter $reflectionParameter
     *
     * @return null|Expr
     */
    protected function getParameterDefault(\ReflectionParameter $reflectionParameter)
    {
        if ($reflectionParameter->isDefaultValueAvailable()) {
            $defaultValue = $reflectionParameter->getDefaultValue();

            return $this->prepareStatement($defaultValue);
        }

        return null;
    }

    /**
     * @param \ReflectionParameter $reflectionParameter
     *
     * @return null|string
     */
    protected function getParameterTypeHint(\ReflectionParameter $reflectionParameter)
    {
        if (null !== $class = $reflectionParameter->getClass()) {
            return '\\' . $class->getName();
        } elseif ($reflectionParameter->isArray()) {
            return 'array';
        }

        return null;
    }

    /**
     * @param \ReflectionParameter $reflectionParameter
     *
     * @return bool
     */
    protected function isParameterVariadic(\ReflectionParameter $reflectionParameter)
    {
        if (is_callable(array($reflectionParameter, 'isVariadic')) &&
            $reflectionParameter->isVariadic()) {
            return true;
        }

        return false;
    }

    /**
     * @param mixed $value
     *
     * @return Expr
     */
    protected function prepareStatement($value)
    {
        $method = 'prepareStatmentFor' . ucfirst(gettype($value));
        if (!is_callable(array($this, $method))) {
            throw new \InvalidArgumentException(sprintf('Can\'t prepare default statement for type: %s', gettype($value)));
        }

        return $this->$method($value);
    }

    /**
     * @param array $value
     *
     * @return Array_
     */
    protected function prepareStatmentForArray($value)
    {
        $items = array();
        foreach ($value as $subKey => $subValue) {
            $items[] = new ArrayItem($this->prepareStatement($subValue), $this->prepareStatement($subKey));
        }

        return new Array_($items);
    }

    /**
     * @return ConstFetch
     */
    protected function prepareStatmentForNull()
    {
        return new ConstFetch(new Name('null'));
    }

    /**
     * @param bool $value
     *
     * @return ConstFetch
     */
    protected function prepareStatmentForBool($value)
    {
        return new ConstFetch(new Name($value ? 'true' : 'false'));
    }

    /**
     * @param int $value
     *
     * @return LNumber
     */
    protected function prepareStatmentForInt($value)
    {
        return new LNumber($value);
    }

    /**
     * @param float $value
     *
     * @return DNumber
     */
    protected function prepareStatmentForFloat($value)
    {
        return new DNumber($value);
    }

    /**
     * @param string $value
     *
     * @return String_
     */
    protected function prepareStatmentForString($value)
    {
        return new String_($value);
    }
}


1			<?php
2
3			namespace Saxulum\LazyService;
4
5			use PhpParser\Node\Arg;
6			use PhpParser\Node\Expr;
7			use PhpParser\Node\Expr\Array_;
8			use PhpParser\Node\Expr\ArrayItem;
9			use PhpParser\Node\Expr\Assign;
10			use PhpParser\Node\Expr\BinaryOp\Identical;
11			use PhpParser\Node\Expr\ConstFetch;
12			use PhpParser\Node\Expr\MethodCall;
13			use PhpParser\Node\Expr\New_;
14			use PhpParser\Node\Expr\PropertyFetch;
15			use PhpParser\Node\Expr\Variable;
16			use PhpParser\Node\Name;
17			use PhpParser\Node\Param;
18			use PhpParser\Node\Scalar\DNumber;
19			use PhpParser\Node\Scalar\LNumber;
20			use PhpParser\Node\Scalar\String_;
21			use PhpParser\Node\Stmt\Class_;
22			use PhpParser\Node\Stmt\ClassMethod;
23			use PhpParser\Node\Stmt\If_;
24			use PhpParser\Node\Stmt\Namespace_;
25			use PhpParser\Node\Stmt\Property;
26			use PhpParser\Node\Stmt\PropertyProperty;
27			use PhpParser\Node\Stmt\Return_;
28			use PhpParser\PrettyPrinter\Standard as PhpGenerator;
29
30			class Generator
31			{
32			const PROP_CONTAINER = '__container';
33			const PROP_ORIGINAL = '__original';
34
35			/**
36			* @var PhpGenerator
37			*/
38			protected $phpGenerator;
39
40			/**
41			* @param PhpGenerator $phpGenerator
42			*/
43			public function __construct(PhpGenerator $phpGenerator)
44			{
45			$this->phpGenerator = $phpGenerator;
46			}
47
48			/**
49			* @param Mapping $mapping
50			* @param string $path
51			*
52			* @return string
53			*/
54			public function generate(Mapping $mapping, $path)
55			{
56			$nodes = array_merge(
57			$this->generatePropertyNodes(),
58			$this->generateMethodNodes($mapping)
59			);
60
61			$lazyNamespaceParts = explode('\\', $mapping->getLazyClass());
62			$lazyClass = array_pop($lazyNamespaceParts);
63
64			$classNode = new Namespace_(
65			new Name(implode('\\', $lazyNamespaceParts)), array(
66			new Class_($lazyClass, array(
67			'extends' => new Name('\\' . $mapping->getOriginalClass()),
68			'stmts' => $nodes,
69			)),
70			)
71			);
72
73			$phpCode = '<?php' . "\n\n" . $this->phpGenerator->prettyPrint(array($classNode));
74
75			file_put_contents($path . DIRECTORY_SEPARATOR . $lazyClass . '.php', $phpCode);
76			}
77
78			/**
79			* @param string $class
80			*
81			* @return \ReflectionClass
82			*
83			* @throws \Exception
84			*/
85			protected function getReflectionClass($class)
86			{
87			if (!class_exists($class)) {
88			throw new \Exception(sprintf('Unknown class: %s', $class));
89			}
90
91			return new \ReflectionClass($class);
92			}
93
94			/**
95			* @return Property[]
96			*/
97			protected function generatePropertyNodes()
98			{
99			return array(
100			new Property(2,
101			array(
102			new PropertyProperty(self::PROP_CONTAINER),
103			)
104			),
105			new Property(2,
106			array(
107			new PropertyProperty(self::PROP_ORIGINAL),
108			)
109			),
110			);
111			}
112
113			/**
114			* @param Mapping $mapping
115			*
116			* @return ClassMethod[]
117			*/
118			protected function generateMethodNodes(Mapping $mapping)
119			{
120			$reflectionClass = $this->getReflectionClass($mapping->getOriginalClass());
121
122			$classMethodNodes = array();
123			foreach ($reflectionClass->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
124			if ($reflectionMethod->getName() === '__construct') {
125			$classMethodNodes[] = $this->generateMethodConstructNode();
126			$classMethodNodes[] = $this->generateMethodOriginalNode($mapping, $reflectionMethod);
127			} else {
128			$classMethodNodes[] = $this->generateMethodNode($reflectionMethod);
129			}
130			}
131
132			return $classMethodNodes;
133			}
134
135			/**
136			* @return ClassMethod
137			*/
138			protected function generateMethodConstructNode()
139			{
140			return new ClassMethod('__construct', array(
141			'type' => 1,
142			'params' => array(
143			new Param(
144			'container',
145			null,
146			'\Saxulum\LazyService\Container\ReaderInterface'
147			),
148			),
149			'stmts' => array(
150			new Assign(
151			new PropertyFetch(new Variable('this'), self::PROP_CONTAINER),
152			new Variable('container')
153			),
154			),
155			));
156			}
157
158			/**
159			* @param Mapping $mapping
160			* @param \ReflectionMethod $reflectionMethod
161			*
162			* @return ClassMethod
163			*/
164			protected function generateMethodOriginalNode(Mapping $mapping, $reflectionMethod)
165			{
166			$constructArgumentsByName = $this->getConstructArgumentsByName($mapping);
167			$args = $this->generateOriginalArgumentNodes($reflectionMethod, $constructArgumentsByName);
168
169			return new ClassMethod(self::PROP_ORIGINAL, array(
170			'type' => 2,
171			'stmts' => array(
172			new If_(
173			new Expr\BinaryOp\Identical(
174			new ConstFetch(new Name('null')),
175			new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL)
176			),
177			array(
178			'stmts' => array(
179			new Assign(
180			new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL),
181			new New_(new Name('\\' . $mapping->getOriginalClass()), $args)
182			),
183			),
184			)
185			),
186			new Return_(
187			new PropertyFetch(new Variable('this'), self::PROP_ORIGINAL)
188			),
189			),
190			));
191			}
192
193			/**
194			* @param Mapping $mapping
195			*
196			* @return ConstructArgument[]
197			*/
198			protected function getConstructArgumentsByName(Mapping $mapping)
199			{
200			$constructArgumentsByName = array();
201			foreach ($mapping->getOriginalClassConstructArguments() as $constructArgument) {
202			$constructArgumentsByName[$constructArgument->getName()] = $constructArgument;
203			}
204
205			return $constructArgumentsByName;
206			}
207
208			/**
209			* @param \ReflectionMethod $reflectionMethod
210			* @param ConstructArgument[] $constructArgumentsByName
211			*
212			* @return Arg[]
213			*/
214			protected function generateOriginalArgumentNodes(\ReflectionMethod $reflectionMethod, array $constructArgumentsByName)
215			{
216			$args = array();
217			foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
218			if (isset($constructArgumentsByName[$reflectionParameter->getName()])) {
219			$constructArgument = $constructArgumentsByName[$reflectionParameter->getName()];
220			$args[] = new MethodCall(
221			new PropertyFetch(new Variable('this'), self::PROP_CONTAINER),
222			$constructArgument->getContainerMethod(),
223			array(
224			new Arg(new String_($constructArgument->getContainerKey())),
225			)
226			);
227			} else {
228			$args[] = new Arg(new ConstFetch(new Name('null')));
229			}
230			}
231
232			return $args;
233			}
234
235			/**
236			* @param \ReflectionMethod $reflectionMethod
237			*
238			* @return ClassMethod
239			*/
240			protected function generateMethodNode(\ReflectionMethod $reflectionMethod)
241			{
242			return new ClassMethod($reflectionMethod->getName(), array(
243			'type' => 1,
244			'params' => $this->generateParameterNodes($reflectionMethod),
245			'stmts' => array(
246			new Return_(
247			new MethodCall(
248			new MethodCall(new Variable('this'), self::PROP_ORIGINAL),
249			$reflectionMethod->getName(),
250			$this->generateArgumentNodes($reflectionMethod)
251			)
252			),
253			),
254			));
255			}
256
257			/**
258			* @param \ReflectionMethod $reflectionMethod
259			*
260			* @return Expr[]
261			*/
262			protected function generateParameterNodes(\ReflectionMethod $reflectionMethod)
263			{
264			$params = array();
265			foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
266			$params[] = $this->generateParameterNode($reflectionParameter);
267			}
268
269			return $params;
270			}
271
272			/**
273			* @param \ReflectionMethod $reflectionMethod
274			*
275			* @return Arg[]
276			*/
277			protected function generateArgumentNodes(\ReflectionMethod $reflectionMethod)
278			{
279			$args = array();
280			foreach ($reflectionMethod->getParameters() as $reflectionParameter) {
281			$args[] = new Arg(new Variable($reflectionParameter->getName()));
282			}
283
284			return $args;
285			}
286
287			/**
288			* @param \ReflectionParameter $reflectionParameter
289			*
290			* @return Param
291			*/
292			protected function generateParameterNode(\ReflectionParameter $reflectionParameter)
293			{
294			return new Param(
295			$reflectionParameter->getName(),
296			$this->getParameterDefault($reflectionParameter),
297			$this->getParameterTypeHint($reflectionParameter),
298			$reflectionParameter->isPassedByReference(),
299			$this->isParameterVariadic($reflectionParameter)
300			);
301			}
302
303			/**
304			* @param \ReflectionParameter $reflectionParameter
305			*
306			* @return null\|Expr
307			*/
308			protected function getParameterDefault(\ReflectionParameter $reflectionParameter)
309			{
310			if ($reflectionParameter->isDefaultValueAvailable()) {
311			$defaultValue = $reflectionParameter->getDefaultValue();
312
313			return $this->prepareStatement($defaultValue);
314			}
315
316			return null;
317			}
318
319			/**
320			* @param \ReflectionParameter $reflectionParameter
321			*
322			* @return null\|string
323			*/
324			protected function getParameterTypeHint(\ReflectionParameter $reflectionParameter)
325			{
326			if (null !== $class = $reflectionParameter->getClass()) {
327			return '\\' . $class->getName();
328			} elseif ($reflectionParameter->isArray()) {
329			return 'array';
330			}
331
332			return null;
333			}
334
335			/**
336			* @param \ReflectionParameter $reflectionParameter
337			*
338			* @return bool
339			*/
340			protected function isParameterVariadic(\ReflectionParameter $reflectionParameter)
341			{
342			if (is_callable(array($reflectionParameter, 'isVariadic')) &&
343			$reflectionParameter->isVariadic()) {
344			return true;
345			}
346
347			return false;
348			}
349
350			/**
351			* @param mixed $value
352			*
353			* @return Expr
354			*/
355			protected function prepareStatement($value)
356			{
357			$method = 'prepareStatmentFor' . ucfirst(gettype($value));
358			if (!is_callable(array($this, $method))) {
359			throw new \InvalidArgumentException(sprintf('Can\'t prepare default statement for type: %s', gettype($value)));
360			}
361
362			return $this->$method($value);
363			}
364
365			/**
366			* @param array $value
367			*
368			* @return Array_
369			*/
370			protected function prepareStatmentForArray($value)
371			{
372			$items = array();
373			foreach ($value as $subKey => $subValue) {
374			$items[] = new ArrayItem($this->prepareStatement($subValue), $this->prepareStatement($subKey));
375			}
376
377			return new Array_($items);
378			}
379
380			/**
381			* @return ConstFetch
382			*/
383			protected function prepareStatmentForNull()
384			{
385			return new ConstFetch(new Name('null'));
386			}
387
388			/**
389			* @param bool $value
390			*
391			* @return ConstFetch
392			*/
393			protected function prepareStatmentForBool($value)
394			{
395			return new ConstFetch(new Name($value ? 'true' : 'false'));
396			}
397
398			/**
399			* @param int $value
400			*
401			* @return LNumber
402			*/
403			protected function prepareStatmentForInt($value)
404			{
405			return new LNumber($value);
406			}
407
408			/**
409			* @param float $value
410			*
411			* @return DNumber
412			*/
413			protected function prepareStatmentForFloat($value)
414			{
415			return new DNumber($value);
416			}
417
418			/**
419			* @param string $value
420			*
421			* @return String_
422			*/
423			protected function prepareStatmentForString($value)
424			{
425			return new String_($value);
426			}
427			}
428

saxulum / saxulum-lazy-service

Generator::getReflectionClass() A last analyzed 2018-04-20 16:31 UTC

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Generator::getReflectionClass() A
last analyzed 2018-04-20 16:31 UTC