Context::resolve() - Code Metrics - Inspection of "finish dev and tests" - platine-php/template - Measure and Improve Code Quality continuously with Scrutinizer

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Push — develop ( 067c9c...bf1d25 )

by nguereza

created 2021-05-15 17:46 UTC

Context::resolve() B

↳ Parent: Context

Complexity

Conditions	8
Paths	8

Size

Total Lines	32
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	8
eloc	16
nc	8
nop	1
dl	0
loc	32
rs	8.4444
c	1
b	0
f	0

<?php

/**
 * Platine Template
 *
 * Platine Template is a template engine that has taken a lot of inspiration from Django.
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2020 Platine Template
 * Copyright (c) 2014 Guz Alexander, http://guzalexander.com
 * Copyright (c) 2011, 2012 Harald Hanek, http://www.delacap.com
 * Copyright (c) 2006 Mateo Murphy
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/**
 *  @file Context.php
 *
 *  The template Context class
 *
 *  @package    Platine\Template\Parser
 *  @author Platine Developers Team
 *  @copyright  Copyright (c) 2020
 *  @license    http://opensource.org/licenses/MIT  MIT License
 *  @link   http://www.iacademy.cf
 *  @version 1.0.0
 *  @filesource
 */

declare(strict_types=1);

namespace Platine\Template\Parser;

use Countable;
use Platine\Template\Exception\TemplateException;
use Platine\Template\Filter\ArrayFilter;
use TypeError;

/**
 * Class Context
 * @package Platine\Template\Parser
 */
class Context
{
    /**
     * The local scopes
     * @var array<int, array<string, mixed>>
     */
    protected array $assigns = [];

    /**
     * Registers for non-variable state data
     * @var array<string, mixed>
     */
    protected array $registers = [];

    /**
     * Global scopes
     * @var array<string, mixed>
     */
    protected array $environments = [];

    /**
     * The filter collection instance
     * @var FilterCollection
     */
    protected FilterCollection $filters;

    /**
     * Called "sometimes" while rendering.
     * For example to abort the execution of a rendering.
     * @var callable|null
     */
    protected $tickCallback = null;

    /**
     * The parser instance
     * @var Parser
     */
    protected Parser $parser;


    /**
     * Create new instance
     * @param array<string, mixed> $assigns
     * @param array<string, mixed> $registers
     */
    public function __construct(array $assigns = [], array $registers = [])
    {
        $this->assigns = [$assigns];
        $this->registers = $registers;
        $this->filters = new FilterCollection();
    }

    /**
     * Set the parser instance
     * @param Parser $parser
     * @return $this
     */
    public function setParser(Parser $parser): self
    {
        $this->parser = $parser;

        return $this;
    }


    /**
     * Set tick callback
     * @param callable|null $tickCallback
     * @return $this
     */
    public function setTickCallback(?callable $tickCallback)
    {
        $this->tickCallback = $tickCallback;

        return $this;
    }

    /**
     * Add filter
     * @param class-string $filter

     * @return $this
     */
    public function addFilter(string $filter): self
    {
        $this->filters->addFilter($filter);

        return $this;
    }

    /**
     * Invokes the filter with the given name
     * @param string $name
     * @param mixed $value
     * @param array<int, mixed> $args
     * @return mixed
     */
    public function invokeFilter(string $name, $value, array $args = [])
    {
        try {
            return $this->filters->invoke($name, $value, $args);
        } catch (TypeError $ex) {
            throw new TemplateException($ex->getMessage(), 0, $ex);
        }
    }

    /**
     * Merges the given assigns into the current assigns
     * @param array<string, mixed> $assigns
     * @return void
     */
    public function merge(array $assigns): void
    {
        $this->assigns[0] = array_merge($this->assigns[0], $assigns);
    }

    /**
     * Push new local scope on the stack.
     * @return bool
     */
    public function push(): bool
    {
        array_unshift($this->assigns, []);

        return true;
    }

    public function pop(): bool
    {
        if (count($this->assigns) === 1) {
            throw new TemplateException('No elements to retrieve (pop) from context');
        }
        array_shift($this->assigns);

        return true;
    }

    /**
     * Return the context value for the given key
     * @param string $key
     * @return mixed
     */
    public function get(string $key)
    {
        return $this->resolve($key);
    }

    /**
     * Set the value for the given key
     * @param string $key
     * @param mixed $value
     * @param bool $global
     * @return void
     */
    public function set(string $key, $value, bool $global = false): void
    {
        if ($global) {
            $count = count($this->assigns);
            for ($i = 0; $i < $count; $i++) {
                $this->assigns[$i][$key] = $value;
            }
        } else {
            $this->assigns[0][$key] = $value;
        }
    }

    /**
     * Returns true if the given key will properly resolve
     * @param string $key
     * @return bool
     */
    public function hasKey(string $key): bool
    {
        return $this->resolve($key) !== null;
    }

    /**
     * Check whether the given register exists
     * @param string $name
     * @return bool
     */
    public function hasRegister(string $name): bool
    {
        return isset($this->registers[$name]);
    }

    /**
     * Clear the given register
     * @param string $name
     * @return $this
     */
    public function clearRegister(string $name): self
    {
        unset($this->registers[$name]);

        return $this;
    }

    /**
     * Return the value for the given register
     * @param string $name
     * @return mixed|null
     */
    public function getRegister(string $name)
    {
        if ($this->hasRegister($name)) {
            return $this->registers[$name];
        }

        return null;
    }

    /**
     * Set the register value
     * @param string $name
     * @param mixed $value
     * @return $this
     */
    public function setRegister(string $name, $value): self
    {
        $this->registers[$name] = $value;

        return $this;
    }

    /**
     * Check whether the given environment exists
     * @param string $name
     * @return bool
     */
    public function hasEnvironment(string $name): bool
    {
        return isset($this->environments[$name]);
    }

    /**
     * Return the value for the given environment
     * @param string $name
     * @return mixed|null
     */
    public function getEnvironment(string $name)
    {
        if ($this->hasEnvironment($name)) {
            return $this->environments[$name];
        }

        return null;
    }

    /**
     * Set the environment value
     * @param string $name
     * @param mixed $value
     * @return $this
     */
    public function setEnvironment(string $name, $value): self
    {
        $this->environments[$name] = $value;

        return $this;
    }

    /**
     * Call the tick callback
     * @return void
     */
    public function tick(): void
    {
        if ($this->tickCallback === null) {
            return;
        }

        ($this->tickCallback)($this);
    }

    /**
     * Resolve a key by either returning the appropriate literal
     * or by looking up the appropriate variable
     * @param string $key
     * @return mixed|null
     */
    protected function resolve(string $key)
    {
        if ($key === 'null') {
            return null;
        }

        if ($key === 'true') {
            return true;
        }

        if ($key === 'false') {
            return false;
        }

        $matches = [];
        if (preg_match('/^\'(.*)\'$/', $key, $matches)) {
            return $matches[1];
        }

        if (preg_match('/^"(.*)"$/', $key, $matches)) {
            return $matches[1];
        }

        if (preg_match('/^(-?\d+)$/', $key, $matches)) {
            return $matches[1];
        }

        if (preg_match('/^(-?\d[\d\.]+)$/', $key, $matches)) {
            return $matches[1];
        }

        return $this->variable($key);
    }

    /**
     * Fetches the current key in all the scopes
     * @param string $key
     * @return mixed|null
     */
    protected function fetch(string $key)
    {
        if (array_key_exists($key, $this->environments)) {
            return $this->environments[$key];
        }

        foreach ($this->assigns as $scope) {
            if (array_key_exists($key, $scope)) {
                $obj = $scope[$key];

                if ($obj instanceof Drop) {
                    $obj->setContext($this);
                }

                return $obj;
            }
        }

        return null;
    }

    /**
     * Resolved the name spaced queries gracefully.
     * @param string $key
     * @return mixed|null
     */
    protected function variable(string $key)
    {
        // Support numeric and variable array indicies
        $matches = [];
        if (preg_match('|\[[0-9]+\]|', $key)) {
            $key = (string) preg_replace('|\[([0-9]+)\]|', ".$1", $key);
        } elseif (preg_match('|\[[0-9a-z._]+\]|', $key, $matches)) {
            $index = $this->get(str_replace(['[', ']'], '', $matches[0]));
            if (is_string($index) && strlen($index) > 0) {
                $key = (string) preg_replace('|\[([0-9a-z._]+)\]|', ".$index", $key);
            }
        }

        $parts = explode(Token::VARIABLE_ATTR_SEPARATOR, $key);

        if ($parts !== false) {
            $object = $this->fetch((string) array_shift($parts));
            while (count($parts) > 0) {
                // since we still have a part to consider
                // and since we can't dig deeper into plain values
                // it can be thought as if it has a property with a null value
                if (
                    !is_object($object)
                    && !is_array($object)
                    && !is_string($object)
                ) {
                    return null;
                }

                // first try to cast an object to an array or value
                if (is_object($object)) {
                    if (method_exists($object, 'toObject')) {
                        $object = $object->toObject();
                    } elseif (method_exists($object, 'toArray')) {
                        $object = $object->toArray();
                    }
                }

                if (is_null($object)) {
                    return null;
                }

                if ($object instanceof Drop) {
                    $object->setContext($this);
                }

                $nextPartName = (string) array_shift($parts);
                if (is_string($object)) {
                    if ($nextPartName === 'size') {
                        return strlen($object);
                    }

                    return null;
                }


                if (is_array($object)) {
                    if (
                        $nextPartName === 'first'
                        && count($parts) === 0
                        && !array_key_exists('first', $object)
                    ) {
                        return ArrayFilter::first($object);
                    }

                    if (
                        $nextPartName === 'last'
                        && count($parts) === 0
                        && !array_key_exists('last', $object)
                    ) {
                        return ArrayFilter::last($object);
                    }

                    if (
                        $nextPartName === 'size'
                        && count($parts) === 0
                        && !array_key_exists('size', $object)
                    ) {
                        return count($object);
                    }

                    // no key - no value
                    if (!array_key_exists($nextPartName, $object)) {
                        return null;
                    }

                    $object = $object[$nextPartName];
                    continue;
                }

                if (!is_object($object)) {
                    // we got plain value, yet asked to resolve a part
                    // think plain values have a null part with any name
                    return null;
                }

                if ($object instanceof Countable) {
                    if (
                        $nextPartName === 'size'
                        && count($parts) === 0
                    ) {
                        return count($object);
                    }
                }

                if ($object instanceof Drop) {
                    if (!$object->hasKey($nextPartName)) {
                        return null;
                    }

                    $object = $object->invokeDrop($nextPartName);
                    continue;
                }

                // if it's just a regular object, attempt to access a public method
                $objectCallable = [$object, $nextPartName];
                if (is_callable($objectCallable)) {
                    $object = call_user_func($objectCallable);
                    continue;
                }

                // if a magic accessor method present...
                if (is_object($object) && method_exists($object, '__get')) {
                    $object = $object->{$nextPartName};
                    continue;
                }

                // Inexistent property is a null, PHP-speak
                if (!property_exists($object, $nextPartName)) {
                    return null;
                }

                // then try a property (independent of accessibility)
                if (property_exists($object, $nextPartName)) {
                    $object = $object->{$nextPartName};
                    continue;
                }
                // we'll try casting this object in the next iteration
            }

            // lastly, try to get an embedded value of an object
            // value could be of any type, not just string, so we have to do this
            // conversion here, not later in AbstractBlock::renderAll
            if (is_object($object) && method_exists($object, 'toObject')) {
                $object = $object->toObject();
            }

            /*
            * Before here were checks for object types and object to string conversion.
            *
            * Now we just return what we have:
            * - Traversable objects are taken care of inside filters
            * - Object-to-string conversion is handled at the last moment
             * in AbstractCondition::stringValue, and in AbstractBlock::renderAll
            *
            * This way complex objects could be passed between templates and to filters
            */
            return $object;
        }
    }
}


1			<?php
2
3			/**
4			* Platine Template
5			*
6			* Platine Template is a template engine that has taken a lot of inspiration from Django.
7			*
8			* This content is released under the MIT License (MIT)
9			*
10			* Copyright (c) 2020 Platine Template
11			* Copyright (c) 2014 Guz Alexander, http://guzalexander.com
12			* Copyright (c) 2011, 2012 Harald Hanek, http://www.delacap.com
13			* Copyright (c) 2006 Mateo Murphy
14			*
15			* Permission is hereby granted, free of charge, to any person obtaining a copy
16			* of this software and associated documentation files (the "Software"), to deal
17			* in the Software without restriction, including without limitation the rights
18			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
19			* copies of the Software, and to permit persons to whom the Software is
20			* furnished to do so, subject to the following conditions:
21			*
22			* The above copyright notice and this permission notice shall be included in all
23			* copies or substantial portions of the Software.
24			*
25			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
28			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
29			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
30			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31			* SOFTWARE.
32			*/
33
34			/**
35			* @file Context.php
36			*
37			* The template Context class
38			*
39			* @package Platine\Template\Parser
40			* @author Platine Developers Team
41			* @copyright Copyright (c) 2020
42			* @license http://opensource.org/licenses/MIT MIT License
43			* @link http://www.iacademy.cf
44			* @version 1.0.0
45			* @filesource
46			*/
47
48			declare(strict_types=1);
49
50			namespace Platine\Template\Parser;
51
52			use Countable;
53			use Platine\Template\Exception\TemplateException;
54			use Platine\Template\Filter\ArrayFilter;
55			use TypeError;
56
57			/**
58			* Class Context
59			* @package Platine\Template\Parser
60			*/
61			class Context
62			{
63			/**
64			* The local scopes
65			* @var array<int, array<string, mixed>>
66			*/
67			protected array $assigns = [];
68
69			/**
70			* Registers for non-variable state data
71			* @var array<string, mixed>
72			*/
73			protected array $registers = [];
74
75			/**
76			* Global scopes
77			* @var array<string, mixed>
78			*/
79			protected array $environments = [];
80
81			/**
82			* The filter collection instance
83			* @var FilterCollection
84			*/
85			protected FilterCollection $filters;
86
87			/**
88			* Called "sometimes" while rendering.
89			* For example to abort the execution of a rendering.
90			* @var callable\|null
91			*/
92			protected $tickCallback = null;
93
94			/**
95			* The parser instance
96			* @var Parser
97			*/
98			protected Parser $parser;
99
100
101			/**
102			* Create new instance
103			* @param array<string, mixed> $assigns
104			* @param array<string, mixed> $registers
105			*/
106			public function __construct(array $assigns = [], array $registers = [])
107			{
108			$this->assigns = [$assigns];
109			$this->registers = $registers;
110			$this->filters = new FilterCollection();
111			}
112
113			/**
114			* Set the parser instance
115			* @param Parser $parser
116			* @return $this
117			*/
118			public function setParser(Parser $parser): self
119			{
120			$this->parser = $parser;
121
122			return $this;
123			}
124
125
126			/**
127			* Set tick callback
128			* @param callable\|null $tickCallback
129			* @return $this
130			*/
131			public function setTickCallback(?callable $tickCallback)
132			{
133			$this->tickCallback = $tickCallback;
134
135			return $this;
136			}
137
138			/**
139			* Add filter
140			* @param class-string $filter
			0 ignored issues – show Documentation Bug introduced 2021-05-15 17:50 UTC by Report Bug Copy Issue Report The doc comment `class-string` at position `0` could not be parsed: Unknown type name 'class-string' at position 0 in class-string. Loading history...
141			* @return $this
142			*/
143			public function addFilter(string $filter): self
144			{
145			$this->filters->addFilter($filter);
146
147			return $this;
148			}
149
150			/**
151			* Invokes the filter with the given name
152			* @param string $name
153			* @param mixed $value
154			* @param array<int, mixed> $args
155			* @return mixed
156			*/
157			public function invokeFilter(string $name, $value, array $args = [])
158			{
159			try {
160			return $this->filters->invoke($name, $value, $args);
161			} catch (TypeError $ex) {
162			throw new TemplateException($ex->getMessage(), 0, $ex);
163			}
164			}
165
166			/**
167			* Merges the given assigns into the current assigns
168			* @param array<string, mixed> $assigns
169			* @return void
170			*/
171			public function merge(array $assigns): void
172			{
173			$this->assigns[0] = array_merge($this->assigns[0], $assigns);
174			}
175
176			/**
177			* Push new local scope on the stack.
178			* @return bool
179			*/
180			public function push(): bool
181			{
182			array_unshift($this->assigns, []);
183
184			return true;
185			}
186
187			public function pop(): bool
188			{
189			if (count($this->assigns) === 1) {
190			throw new TemplateException('No elements to retrieve (pop) from context');
191			}
192			array_shift($this->assigns);
193
194			return true;
195			}
196
197			/**
198			* Return the context value for the given key
199			* @param string $key
200			* @return mixed
201			*/
202			public function get(string $key)
203			{
204			return $this->resolve($key);
205			}
206
207			/**
208			* Set the value for the given key
209			* @param string $key
210			* @param mixed $value
211			* @param bool $global
212			* @return void
213			*/
214			public function set(string $key, $value, bool $global = false): void
215			{
216			if ($global) {
217			$count = count($this->assigns);
218			for ($i = 0; $i < $count; $i++) {
219			$this->assigns[$i][$key] = $value;
220			}
221			} else {
222			$this->assigns[0][$key] = $value;
223			}
224			}
225
226			/**
227			* Returns true if the given key will properly resolve
228			* @param string $key
229			* @return bool
230			*/
231			public function hasKey(string $key): bool
232			{
233			return $this->resolve($key) !== null;
234			}
235
236			/**
237			* Check whether the given register exists
238			* @param string $name
239			* @return bool
240			*/
241			public function hasRegister(string $name): bool
242			{
243			return isset($this->registers[$name]);
244			}
245
246			/**
247			* Clear the given register
248			* @param string $name
249			* @return $this
250			*/
251			public function clearRegister(string $name): self
252			{
253			unset($this->registers[$name]);
254
255			return $this;
256			}
257
258			/**
259			* Return the value for the given register
260			* @param string $name
261			* @return mixed\|null
262			*/
263			public function getRegister(string $name)
264			{
265			if ($this->hasRegister($name)) {
266			return $this->registers[$name];
267			}
268
269			return null;
270			}
271
272			/**
273			* Set the register value
274			* @param string $name
275			* @param mixed $value
276			* @return $this
277			*/
278			public function setRegister(string $name, $value): self
279			{
280			$this->registers[$name] = $value;
281
282			return $this;
283			}
284
285			/**
286			* Check whether the given environment exists
287			* @param string $name
288			* @return bool
289			*/
290			public function hasEnvironment(string $name): bool
291			{
292			return isset($this->environments[$name]);
293			}
294
295			/**
296			* Return the value for the given environment
297			* @param string $name
298			* @return mixed\|null
299			*/
300			public function getEnvironment(string $name)
301			{
302			if ($this->hasEnvironment($name)) {
303			return $this->environments[$name];
304			}
305
306			return null;
307			}
308
309			/**
310			* Set the environment value
311			* @param string $name
312			* @param mixed $value
313			* @return $this
314			*/
315			public function setEnvironment(string $name, $value): self
316			{
317			$this->environments[$name] = $value;
318
319			return $this;
320			}
321
322			/**
323			* Call the tick callback
324			* @return void
325			*/
326			public function tick(): void
327			{
328			if ($this->tickCallback === null) {
329			return;
330			}
331
332			($this->tickCallback)($this);
333			}
334
335			/**
336			* Resolve a key by either returning the appropriate literal
337			* or by looking up the appropriate variable
338			* @param string $key
339			* @return mixed\|null
340			*/
341			protected function resolve(string $key)
342			{
343			if ($key === 'null') {
344			return null;
345			}
346
347			if ($key === 'true') {
348			return true;
349			}
350
351			if ($key === 'false') {
352			return false;
353			}
354
355			$matches = [];
356			if (preg_match('/^\'(.*)\'$/', $key, $matches)) {
357			return $matches[1];
358			}
359
360			if (preg_match('/^"(.*)"$/', $key, $matches)) {
361			return $matches[1];
362			}
363
364			if (preg_match('/^(-?\d+)$/', $key, $matches)) {
365			return $matches[1];
366			}
367
368			if (preg_match('/^(-?\d[\d\.]+)$/', $key, $matches)) {
369			return $matches[1];
370			}
371
372			return $this->variable($key);
373			}
374
375			/**
376			* Fetches the current key in all the scopes
377			* @param string $key
378			* @return mixed\|null
379			*/
380			protected function fetch(string $key)
381			{
382			if (array_key_exists($key, $this->environments)) {
383			return $this->environments[$key];
384			}
385
386			foreach ($this->assigns as $scope) {
387			if (array_key_exists($key, $scope)) {
388			$obj = $scope[$key];
389
390			if ($obj instanceof Drop) {
391			$obj->setContext($this);
392			}
393
394			return $obj;
395			}
396			}
397
398			return null;
399			}
400
401			/**
402			* Resolved the name spaced queries gracefully.
403			* @param string $key
404			* @return mixed\|null
405			*/
406			protected function variable(string $key)
407			{
408			// Support numeric and variable array indicies
409			$matches = [];
410			if (preg_match('\|\[[0-9]+\]\|', $key)) {
411			$key = (string) preg_replace('\|\[([0-9]+)\]\|', ".$1", $key);
412			} elseif (preg_match('\|\[[0-9a-z._]+\]\|', $key, $matches)) {
413			$index = $this->get(str_replace(['[', ']'], '', $matches[0]));
414			if (is_string($index) && strlen($index) > 0) {
415			$key = (string) preg_replace('\|\[([0-9a-z._]+)\]\|', ".$index", $key);
416			}
417			}
418
419			$parts = explode(Token::VARIABLE_ATTR_SEPARATOR, $key);
420
421			if ($parts !== false) {
422			$object = $this->fetch((string) array_shift($parts));
423			while (count($parts) > 0) {
424			// since we still have a part to consider
425			// and since we can't dig deeper into plain values
426			// it can be thought as if it has a property with a null value
427			if (
428			!is_object($object)
429			&& !is_array($object)
430			&& !is_string($object)
431			) {
432			return null;
433			}
434
435			// first try to cast an object to an array or value
436			if (is_object($object)) {
437			if (method_exists($object, 'toObject')) {
438			$object = $object->toObject();
439			} elseif (method_exists($object, 'toArray')) {
440			$object = $object->toArray();
441			}
442			}
443
444			if (is_null($object)) {
445			return null;
446			}
447
448			if ($object instanceof Drop) {
449			$object->setContext($this);
450			}
451
452			$nextPartName = (string) array_shift($parts);
453			if (is_string($object)) {
454			if ($nextPartName === 'size') {
455			return strlen($object);
456			}
457
458			return null;
459			}
460
461
462			if (is_array($object)) {
463			if (
464			$nextPartName === 'first'
465			&& count($parts) === 0
466			&& !array_key_exists('first', $object)
467			) {
468			return ArrayFilter::first($object);
469			}
470
471			if (
472			$nextPartName === 'last'
473			&& count($parts) === 0
474			&& !array_key_exists('last', $object)
475			) {
476			return ArrayFilter::last($object);
477			}
478
479			if (
480			$nextPartName === 'size'
481			&& count($parts) === 0
482			&& !array_key_exists('size', $object)
483			) {
484			return count($object);
485			}
486
487			// no key - no value
488			if (!array_key_exists($nextPartName, $object)) {
489			return null;
490			}
491
492			$object = $object[$nextPartName];
493			continue;
494			}
495
496			if (!is_object($object)) {
497			// we got plain value, yet asked to resolve a part
498			// think plain values have a null part with any name
499			return null;
500			}
501
502			if ($object instanceof Countable) {
503			if (
504			$nextPartName === 'size'
505			&& count($parts) === 0
506			) {
507			return count($object);
508			}
509			}
510
511			if ($object instanceof Drop) {
512			if (!$object->hasKey($nextPartName)) {
513			return null;
514			}
515
516			$object = $object->invokeDrop($nextPartName);
517			continue;
518			}
519
520			// if it's just a regular object, attempt to access a public method
521			$objectCallable = [$object, $nextPartName];
522			if (is_callable($objectCallable)) {
523			$object = call_user_func($objectCallable);
524			continue;
525			}
526
527			// if a magic accessor method present...
528			if (is_object($object) && method_exists($object, '__get')) {
529			$object = $object->{$nextPartName};
530			continue;
531			}
532
533			// Inexistent property is a null, PHP-speak
534			if (!property_exists($object, $nextPartName)) {
535			return null;
536			}
537
538			// then try a property (independent of accessibility)
539			if (property_exists($object, $nextPartName)) {
540			$object = $object->{$nextPartName};
541			continue;
542			}
543			// we'll try casting this object in the next iteration
544			}
545
546			// lastly, try to get an embedded value of an object
547			// value could be of any type, not just string, so we have to do this
548			// conversion here, not later in AbstractBlock::renderAll
549			if (is_object($object) && method_exists($object, 'toObject')) {
550			$object = $object->toObject();
551			}
552
553			/*
554			* Before here were checks for object types and object to string conversion.
555			*
556			* Now we just return what we have:
557			* - Traversable objects are taken care of inside filters
558			* - Object-to-string conversion is handled at the last moment
559			* in AbstractCondition::stringValue, and in AbstractBlock::renderAll
560			*
561			* This way complex objects could be passed between templates and to filters
562			*/
563			return $object;
564			}
565			}
566			}
567

platine-php / template

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Context::resolve() B

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