CallbackBuilder::getVarName() - Code Metrics - Inspection of "Query callback builder clears it's state correctly..." - remorhaz/php-json-path - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 345204...d371ed )

by Edward

created 2019-08-28 08:57 UTC

CallbackBuilder::getVarName() A

↳ Parent: CallbackBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
cc	1
eloc	1
c	0
b	0
f	0
nc	1
nop	1
dl	0
loc	3
ccs	0
cts	2
cp	0
crap	2
rs	10

<?php
declare(strict_types=1);

namespace Remorhaz\JSON\Path\Query;

use Remorhaz\JSON\Path\Runtime\LiteralFactoryInterface;
use Remorhaz\JSON\Path\Runtime\Matcher\MatcherFactoryInterface;
use Remorhaz\JSON\Path\Runtime\ValueListFetcherInterface;
use Remorhaz\JSON\Path\Value\NodeValueListInterface;
use function array_map;
use function array_reverse;
use PhpParser\BuilderFactory;
use PhpParser\Node as PhpAstNode;
use PhpParser\Node\Arg;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Stmt\Expression;
use PhpParser\Node\Stmt\Return_;
use PhpParser\PrettyPrinter\Standard;
use Remorhaz\JSON\Path\Runtime\EvaluatorInterface;
use Remorhaz\JSON\Path\Value\ValueListInterface;
use Remorhaz\UniLex\AST\AbstractTranslatorListener;
use Remorhaz\UniLex\AST\Node as QueryAstNode;
use Remorhaz\UniLex\Exception as UniLexException;
use Remorhaz\UniLex\Stack\PushInterface;
use function is_callable;

final class CallbackBuilder extends AbstractTranslatorListener implements CallbackBuilderInterface
{

    private const ARG_INPUT = 'input';

    private const ARG_VALUE_LIST_FETCHER = 'valueListFetcher';

    private const ARG_EVALUATOR = 'evaluator';

    private const ARG_LITERAL_FACTORY = 'literalFactory';

    private const ARG_MATCHER_FACTORY = 'matcherFactory';

    private $php;

    private $references = [];

    private $input;

    private $valueListFetcher;

    private $evaluator;

    private $literalFactory;

    private $matcherFactory;

    private $stmts = [];

    private $callback;

    private $callbackCode;

    private $capabilities;

    public function __construct()
    {
        $this->php = new BuilderFactory;
    }

    public function getCallback(): callable
    {
        if (!isset($this->callback)) {
            $callback = eval($this->getCallbackCode());

            if (!is_callable($callback)) {
                throw new Exception\InvalidCallbackCodeException($this->getCallbackCode());
            }
            $this->callback = $callback;
        }

        return $this->callback;
    }

    public function getCallbackCode(): string
    {
        if (isset($this->callbackCode)) {
            return $this->callbackCode;
        }

        throw new Exception\QueryCallbackCodeNotFoundException;
    }

    public function getCapabilities(): CapabilitiesInterface
    {
        if (isset($this->capabilities)) {
            return $this->capabilities;
        }

        throw new Exception\CapabilitiesNotFoundException;
    }

    public function onStart(QueryAstNode $node): void
    {
        $this->input = $this->php->var(self::ARG_INPUT);
        $this->valueListFetcher = $this->php->var(self::ARG_VALUE_LIST_FETCHER);
        $this->evaluator = $this->php->var(self::ARG_EVALUATOR);
        $this->literalFactory = $this->php->var(self::ARG_LITERAL_FACTORY);
        $this->matcherFactory = $this->php->var(self::ARG_MATCHER_FACTORY);

        $this->stmts = [];
        $this->references = [];
        unset($this->callback, $this->callbackCode, $this->capabilities);
    }

    public function onFinish(): void
    {
        $inputParam = $this
            ->php
            ->param(self::ARG_INPUT)
            ->setType(NodeValueListInterface::class)
            ->getNode();
        $valueListFetcherParam = $this
            ->php
            ->param(self::ARG_VALUE_LIST_FETCHER)
            ->setType(ValueListFetcherInterface::class)
            ->getNode();
        $evaluatorParam = $this
            ->php
            ->param(self::ARG_EVALUATOR)
            ->setType(EvaluatorInterface::class)
            ->getNode();
        $literalFactoryParam = $this
            ->php
            ->param(self::ARG_LITERAL_FACTORY)
            ->setType(LiteralFactoryInterface::class)
            ->getNode();
        $matcherFactoryParam = $this
            ->php
            ->param(self::ARG_MATCHER_FACTORY)
            ->setType(MatcherFactoryInterface::class)
            ->getNode();
        $stmts = array_map(
            function (PhpAstNode $stmt): PhpAstNode {
                return $stmt instanceof Expr ? new Expression($stmt): $stmt;
            },
            $this->stmts
        );

        $closure = new Expr\Closure(
            [
                'stmts' => $stmts,
                'returnType' => ValueListInterface::class,
                'params' => [
                    $inputParam,
                    $valueListFetcherParam,
                    $evaluatorParam,
                    $literalFactoryParam,
                    $matcherFactoryParam
                ],
            ]
        );
        $return = new Return_($closure);

        $this->callbackCode = (new Standard)->prettyPrint([$return]);
    }

    public function onBeginProduction(QueryAstNode $node, PushInterface $stack): void
    {
        $stack->push(...array_reverse($node->getChildList()));
    }

    /**
     * @param QueryAstNode $node
     * @throws UniLexException
     */
    public function onFinishProduction(QueryAstNode $node): void
    {
        if ($this->hasReference($node)) {
            return;
        }
        switch ($node->getName()) {
            case AstNodeType::GET_INPUT:
                $this->setReference($node, $this->input);
                break;

            case AstNodeType::SET_OUTPUT:
                $this->capabilities = new Capabilities(
                    $node->getAttribute('is_definite'),
                    $node->getAttribute('is_addressable'),
                );
                $this->stmts[] = new Return_($this->getReference($node->getChild(0)));
                break;

            case AstNodeType::FETCH_CHILDREN:
                /** @see ValueListFetcherInterface::fetchChildren() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'fetchChildren',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::FETCH_CHILDREN_DEEP:
                /** @see ValueListFetcherInterface::fetchChildrenDeep() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'fetchChildrenDeep',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::FETCH_FILTER_CONTEXT:
                /** @see ValueListFetcherInterface::fetchFilterContext() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'fetchFilterContext',
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::SPLIT_FILTER_CONTEXT:
                /** @see ValueListFetcherInterface::splitFilterContext() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'splitFilterContext',
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::JOIN_FILTER_RESULTS:
                /** @see ValueListFetcherInterface::joinFilterResults() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'joinFilterResults',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::FILTER:
                /** @see ValueListFetcherInterface::fetchFilteredValues() */
                $this->addMethodCall(
                    $node,
                    $this->valueListFetcher,
                    'fetchFilteredValues',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::EVALUATE:
                /** @see EvaluatorInterface::evaluate() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'evaluate',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::EVALUATE_LOGICAL_OR:
                /** @see EvaluatorInterface::logicalOr() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'logicalOr',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::EVALUATE_LOGICAL_AND:
                /** @see EvaluatorInterface::logicalAnd() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'logicalAnd',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::EVALUATE_LOGICAL_NOT:
                /** @see EvaluatorInterface::logicalNot() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'logicalNot',
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::CALCULATE_IS_EQUAL:
                /** @see EvaluatorInterface::isEqual() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'isEqual',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::CALCULATE_IS_GREATER:
                /** @see EvaluatorInterface::isGreater() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'isGreater',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::CALCULATE_IS_REGEXP:
                /** @see EvaluatorInterface::isRegExp() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'isRegExp',
                    $this->php->val($node->getAttribute('pattern')),
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::MATCH_ANY_CHILD:
                /** @see MatcherFactoryInterface::matchAnyChild() */
                $this->addMethodCall(
                    $node,
                    $this->matcherFactory,
                    'matchAnyChild',
                );
                break;

            case AstNodeType::MATCH_PROPERTY_STRICTLY:
                /** @see MatcherFactoryInterface::matchPropertyStrictly() */
                $this->addMethodCall(
                    $node,
                    $this->matcherFactory,
                    'matchPropertyStrictly',
                    ...array_map(
                        [$this->php, 'val'],
                        $node->getAttribute('names')
                    ),
                );
                break;

            case AstNodeType::MATCH_ELEMENT_STRICTLY:
                /** @see MatcherFactoryInterface::matchElementStrictly() */
                $this->addMethodCall(
                    $node,
                    $this->matcherFactory,
                    'matchElementStrictly',
                    ...array_map(
                        [$this->php, 'val'],
                        $node->getAttribute('indexes')
                    ),
                );
                break;

            case AstNodeType::MATCH_ELEMENT_SLICE:
                /** @see MatcherFactoryInterface::matchElementSlice() */
                $this->addMethodCall(
                    $node,
                    $this->matcherFactory,
                    'matchElementSlice',
                    $this
                        ->php
                        ->val($node->getAttribute('hasStart') ? $node->getAttribute('start') : null),
                    $this
                        ->php
                        ->val($node->getAttribute('hasEnd') ? $node->getAttribute('end') : null),
                    $this
                        ->php
                        ->val($node->getAttribute('step')),
                );
                break;

            case AstNodeType::AGGREGATE:
                /** @see EvaluatorInterface::aggregate() */
                $this->addMethodCall(
                    $node,
                    $this->evaluator,
                    'aggregate',
                    $this->php->val($node->getAttribute('name')),
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::CREATE_LITERAL_SCALAR:
                $attributes = $node->getAttributeList();
                $value = $attributes['value'] ?? null; // TODO: allow pass null in attribute
                /** @see LiteralFactoryInterface::createScalar() */
                $this->addMethodCall(
                    $node,
                    $this->literalFactory,
                    'createScalar',
                    $this->getReference($node->getChild(0)),
                    $this->php->val($value),
                );
                break;

            case AstNodeType::CREATE_LITERAL_ARRAY:
                /** @see LiteralFactoryInterface::createArray() */
                $this->addMethodCall(
                    $node,
                    $this->literalFactory,
                    'createArray',
                    $this->getReference($node->getChild(0)),
                    new Arg(
                        $this->getReference($node->getChild(1)),
                        false,
                        true,
                    ),
                );
                break;

            case AstNodeType::CREATE_ARRAY:
                // [ X:APPEND_TO_ARRAY ]
                $items = [];
                foreach ($node->getChildList() as $child) {
                    $items[] = $this->getReference($child);
                }
                $this->stmts[] = new Assign(
                    $this->createReference($node),
                    $this->php->val($items),
                );
                break;

            case AstNodeType::APPEND_TO_ARRAY:
                // [ 0:<value> ]
                $this->setReference(
                    $node,
                    $this->getReference($node->getChild(0)),
                );
                break;
        }
    }

    private function getVarName(QueryAstNode $node): string
    {
        return "var{$node->getId()}";
    }

    private function createReference(QueryAstNode $node): Expr
    {
        $reference = $this->php->var($this->getVarName($node));
        $this->setReference($node, $reference);

        return $reference;
    }

    private function setReference(QueryAstNode $node, Expr $expr): void
    {
        if (isset($this->references[$node->getId()])) {
            throw new Exception\ReferenceAlreadyExistsException($node->getId());
        }

        $this->references[$node->getId()] = $expr;
    }

    private function hasReference(QueryAstNode $node): bool
    {
        return isset($this->references[$node->getId()]);
    }

    private function getReference(QueryAstNode $node): Expr
    {
        if (!isset($this->references[$node->getId()])) {
            throw new Exception\ReferenceNotFoundException($node->getId());
        }

        return $this->references[$node->getId()];
    }

    private function addMethodCall(QueryAstNode $node, Expr $object, string $method, PhpAstNode ...$args): void
    {
        $methodCall = $this
            ->php
            ->methodCall($object, $method, $args);
        $this->stmts[] = new Assign($this->createReference($node), $methodCall);
    }
}


1		<?php
2		declare(strict_types=1);
3
4		namespace Remorhaz\JSON\Path\Query;
5
6		use Remorhaz\JSON\Path\Runtime\LiteralFactoryInterface;
7		use Remorhaz\JSON\Path\Runtime\Matcher\MatcherFactoryInterface;
8		use Remorhaz\JSON\Path\Runtime\ValueListFetcherInterface;
9		use Remorhaz\JSON\Path\Value\NodeValueListInterface;
10		use function array_map;
11		use function array_reverse;
12		use PhpParser\BuilderFactory;
13		use PhpParser\Node as PhpAstNode;
14		use PhpParser\Node\Arg;
15		use PhpParser\Node\Expr;
16		use PhpParser\Node\Expr\Assign;
17		use PhpParser\Node\Stmt\Expression;
18		use PhpParser\Node\Stmt\Return_;
19		use PhpParser\PrettyPrinter\Standard;
20		use Remorhaz\JSON\Path\Runtime\EvaluatorInterface;
21		use Remorhaz\JSON\Path\Value\ValueListInterface;
22		use Remorhaz\UniLex\AST\AbstractTranslatorListener;
23		use Remorhaz\UniLex\AST\Node as QueryAstNode;
24		use Remorhaz\UniLex\Exception as UniLexException;
25		use Remorhaz\UniLex\Stack\PushInterface;
26		use function is_callable;
27
28		final class CallbackBuilder extends AbstractTranslatorListener implements CallbackBuilderInterface
29		{
30
31		private const ARG_INPUT = 'input';
32
33		private const ARG_VALUE_LIST_FETCHER = 'valueListFetcher';
34
35		private const ARG_EVALUATOR = 'evaluator';
36
37		private const ARG_LITERAL_FACTORY = 'literalFactory';
38
39		private const ARG_MATCHER_FACTORY = 'matcherFactory';
40
41		private $php;
42
43		private $references = [];
44
45		private $input;
46
47		private $valueListFetcher;
48
49		private $evaluator;
50
51		private $literalFactory;
52
53		private $matcherFactory;
54
55		private $stmts = [];
56
57		private $callback;
58
59		private $callbackCode;
60
61		private $capabilities;
62
63	6	public function __construct()
64		{
65	6	$this->php = new BuilderFactory;
66	6	}
67
68		public function getCallback(): callable
69		{
70		if (!isset($this->callback)) {
71		$callback = eval($this->getCallbackCode());
		0 ignored issues – show introduced 2019-08-05 15:55 UTC by Report Bug Copy Issue Report The use of eval() is discouraged. Loading history...
72		if (!is_callable($callback)) {
73		throw new Exception\InvalidCallbackCodeException($this->getCallbackCode());
74		}
75		$this->callback = $callback;
76		}
77
78		return $this->callback;
79		}
80
81	1	public function getCallbackCode(): string
82		{
83	1	if (isset($this->callbackCode)) {
84		return $this->callbackCode;
85		}
86
87	1	throw new Exception\QueryCallbackCodeNotFoundException;
88		}
89
90	3	public function getCapabilities(): CapabilitiesInterface
91		{
92	3	if (isset($this->capabilities)) {
93	2	return $this->capabilities;
94		}
95
96	1	throw new Exception\CapabilitiesNotFoundException;
97		}
98
99	3	public function onStart(QueryAstNode $node): void
100		{
101	3	$this->input = $this->php->var(self::ARG_INPUT);
102	3	$this->valueListFetcher = $this->php->var(self::ARG_VALUE_LIST_FETCHER);
103	3	$this->evaluator = $this->php->var(self::ARG_EVALUATOR);
104	3	$this->literalFactory = $this->php->var(self::ARG_LITERAL_FACTORY);
105	3	$this->matcherFactory = $this->php->var(self::ARG_MATCHER_FACTORY);
106
107	3	$this->stmts = [];
108	3	$this->references = [];
109	3	unset($this->callback, $this->callbackCode, $this->capabilities);
110	3	}
111
112		public function onFinish(): void
113		{
114		$inputParam = $this
115		->php
116		->param(self::ARG_INPUT)
117		->setType(NodeValueListInterface::class)
118		->getNode();
119		$valueListFetcherParam = $this
120		->php
121		->param(self::ARG_VALUE_LIST_FETCHER)
122		->setType(ValueListFetcherInterface::class)
123		->getNode();
124		$evaluatorParam = $this
125		->php
126		->param(self::ARG_EVALUATOR)
127		->setType(EvaluatorInterface::class)
128		->getNode();
129		$literalFactoryParam = $this
130		->php
131		->param(self::ARG_LITERAL_FACTORY)
132		->setType(LiteralFactoryInterface::class)
133		->getNode();
134		$matcherFactoryParam = $this
135		->php
136		->param(self::ARG_MATCHER_FACTORY)
137		->setType(MatcherFactoryInterface::class)
138		->getNode();
139		$stmts = array_map(
140		function (PhpAstNode $stmt): PhpAstNode {
141		return $stmt instanceof Expr ? new Expression($stmt): $stmt;
142		},
143		$this->stmts
144		);
145
146		$closure = new Expr\Closure(
147		[
148		'stmts' => $stmts,
149		'returnType' => ValueListInterface::class,
150		'params' => [
151		$inputParam,
152		$valueListFetcherParam,
153		$evaluatorParam,
154		$literalFactoryParam,
155		$matcherFactoryParam
156		],
157		]
158		);
159		$return = new Return_($closure);
160
161		$this->callbackCode = (new Standard)->prettyPrint([$return]);
162		}
163
164	1	public function onBeginProduction(QueryAstNode $node, PushInterface $stack): void
165		{
166	1	$stack->push(...array_reverse($node->getChildList()));
167	1	}
168
169		/**
170		* @param QueryAstNode $node
171		* @throws UniLexException
172		*/
173	3	public function onFinishProduction(QueryAstNode $node): void
174		{
175	3	if ($this->hasReference($node)) {
176		return;
177		}
178	3	switch ($node->getName()) {
179		case AstNodeType::GET_INPUT:
180	2	$this->setReference($node, $this->input);
181	2	break;
182
183		case AstNodeType::SET_OUTPUT:
184	3	$this->capabilities = new Capabilities(
185	3	$node->getAttribute('is_definite'),
186	3	$node->getAttribute('is_addressable'),
187		);
188	3	$this->stmts[] = new Return_($this->getReference($node->getChild(0)));
189	2	break;
190
191		case AstNodeType::FETCH_CHILDREN:
192		/** @see ValueListFetcherInterface::fetchChildren() */
193		$this->addMethodCall(
194		$node,
195		$this->valueListFetcher,
196		'fetchChildren',
197		$this->getReference($node->getChild(0)),
198		$this->getReference($node->getChild(1)),
199		);
200		break;
201
202		case AstNodeType::FETCH_CHILDREN_DEEP:
203		/** @see ValueListFetcherInterface::fetchChildrenDeep() */
204		$this->addMethodCall(
205		$node,
206		$this->valueListFetcher,
207		'fetchChildrenDeep',
208		$this->getReference($node->getChild(0)),
209		$this->getReference($node->getChild(1)),
210		);
211		break;
212
213		case AstNodeType::FETCH_FILTER_CONTEXT:
214		/** @see ValueListFetcherInterface::fetchFilterContext() */
215		$this->addMethodCall(
216		$node,
217		$this->valueListFetcher,
218		'fetchFilterContext',
219		$this->getReference($node->getChild(0)),
220		);
221		break;
222
223		case AstNodeType::SPLIT_FILTER_CONTEXT:
224		/** @see ValueListFetcherInterface::splitFilterContext() */
225		$this->addMethodCall(
226		$node,
227		$this->valueListFetcher,
228		'splitFilterContext',
229		$this->getReference($node->getChild(0)),
230		);
231		break;
232
233		case AstNodeType::JOIN_FILTER_RESULTS:
234		/** @see ValueListFetcherInterface::joinFilterResults() */
235		$this->addMethodCall(
236		$node,
237		$this->valueListFetcher,
238		'joinFilterResults',
239		$this->getReference($node->getChild(0)),
240		$this->getReference($node->getChild(1)),
241		);
242		break;
243
244		case AstNodeType::FILTER:
245		/** @see ValueListFetcherInterface::fetchFilteredValues() */
246		$this->addMethodCall(
247		$node,
248		$this->valueListFetcher,
249		'fetchFilteredValues',
250		$this->getReference($node->getChild(0)),
251		$this->getReference($node->getChild(1)),
252		);
253		break;
254
255		case AstNodeType::EVALUATE:
256		/** @see EvaluatorInterface::evaluate() */
257		$this->addMethodCall(
258		$node,
259		$this->evaluator,
260		'evaluate',
261		$this->getReference($node->getChild(0)),
262		$this->getReference($node->getChild(1)),
263		);
264		break;
265
266		case AstNodeType::EVALUATE_LOGICAL_OR:
267		/** @see EvaluatorInterface::logicalOr() */
268		$this->addMethodCall(
269		$node,
270		$this->evaluator,
271		'logicalOr',
272		$this->getReference($node->getChild(0)),
273		$this->getReference($node->getChild(1)),
274		);
275		break;
276
277		case AstNodeType::EVALUATE_LOGICAL_AND:
278		/** @see EvaluatorInterface::logicalAnd() */
279		$this->addMethodCall(
280		$node,
281		$this->evaluator,
282		'logicalAnd',
283		$this->getReference($node->getChild(0)),
284		$this->getReference($node->getChild(1)),
285		);
286		break;
287
288		case AstNodeType::EVALUATE_LOGICAL_NOT:
289		/** @see EvaluatorInterface::logicalNot() */
290		$this->addMethodCall(
291		$node,
292		$this->evaluator,
293		'logicalNot',
294		$this->getReference($node->getChild(0)),
295		);
296		break;
297
298		case AstNodeType::CALCULATE_IS_EQUAL:
299		/** @see EvaluatorInterface::isEqual() */
300		$this->addMethodCall(
301		$node,
302		$this->evaluator,
303		'isEqual',
304		$this->getReference($node->getChild(0)),
305		$this->getReference($node->getChild(1)),
306		);
307		break;
308
309		case AstNodeType::CALCULATE_IS_GREATER:
310		/** @see EvaluatorInterface::isGreater() */
311		$this->addMethodCall(
312		$node,
313		$this->evaluator,
314		'isGreater',
315		$this->getReference($node->getChild(0)),
316		$this->getReference($node->getChild(1)),
317		);
318		break;
319
320		case AstNodeType::CALCULATE_IS_REGEXP:
321		/** @see EvaluatorInterface::isRegExp() */
322		$this->addMethodCall(
323		$node,
324		$this->evaluator,
325		'isRegExp',
326		$this->php->val($node->getAttribute('pattern')),
327		$this->getReference($node->getChild(0)),
328		);
329		break;
330
331		case AstNodeType::MATCH_ANY_CHILD:
332		/** @see MatcherFactoryInterface::matchAnyChild() */
333		$this->addMethodCall(
334		$node,
335		$this->matcherFactory,
336		'matchAnyChild',
337		);
338		break;
339
340		case AstNodeType::MATCH_PROPERTY_STRICTLY:
341		/** @see MatcherFactoryInterface::matchPropertyStrictly() */
342		$this->addMethodCall(
343		$node,
344		$this->matcherFactory,
345		'matchPropertyStrictly',
346		...array_map(
347		[$this->php, 'val'],
348		$node->getAttribute('names')
349		),
350		);
351		break;
352
353		case AstNodeType::MATCH_ELEMENT_STRICTLY:
354		/** @see MatcherFactoryInterface::matchElementStrictly() */
355		$this->addMethodCall(
356		$node,
357		$this->matcherFactory,
358		'matchElementStrictly',
359		...array_map(
360		[$this->php, 'val'],
361		$node->getAttribute('indexes')
362		),
363		);
364		break;
365
366		case AstNodeType::MATCH_ELEMENT_SLICE:
367		/** @see MatcherFactoryInterface::matchElementSlice() */
368		$this->addMethodCall(
369		$node,
370		$this->matcherFactory,
371		'matchElementSlice',
372		$this
373		->php
374		->val($node->getAttribute('hasStart') ? $node->getAttribute('start') : null),
375		$this
376		->php
377		->val($node->getAttribute('hasEnd') ? $node->getAttribute('end') : null),
378		$this
379		->php
380		->val($node->getAttribute('step')),
381		);
382		break;
383
384		case AstNodeType::AGGREGATE:
385		/** @see EvaluatorInterface::aggregate() */
386		$this->addMethodCall(
387		$node,
388		$this->evaluator,
389		'aggregate',
390		$this->php->val($node->getAttribute('name')),
391		$this->getReference($node->getChild(0)),
392		);
393		break;
394
395		case AstNodeType::CREATE_LITERAL_SCALAR:
396		$attributes = $node->getAttributeList();
397		$value = $attributes['value'] ?? null; // TODO: allow pass null in attribute
398		/** @see LiteralFactoryInterface::createScalar() */
399		$this->addMethodCall(
400		$node,
401		$this->literalFactory,
402		'createScalar',
403		$this->getReference($node->getChild(0)),
404		$this->php->val($value),
405		);
406		break;
407
408		case AstNodeType::CREATE_LITERAL_ARRAY:
409		/** @see LiteralFactoryInterface::createArray() */
410		$this->addMethodCall(
411		$node,
412		$this->literalFactory,
413		'createArray',
414		$this->getReference($node->getChild(0)),
415		new Arg(
416		$this->getReference($node->getChild(1)),
417		false,
418		true,
419		),
420		);
421		break;
422
423		case AstNodeType::CREATE_ARRAY:
424		// [ X:APPEND_TO_ARRAY ]
425		$items = [];
426		foreach ($node->getChildList() as $child) {
427		$items[] = $this->getReference($child);
428		}
429		$this->stmts[] = new Assign(
430		$this->createReference($node),
431		$this->php->val($items),
432		);
433		break;
434
435		case AstNodeType::APPEND_TO_ARRAY:
436		// [ 0:<value> ]
437		$this->setReference(
438		$node,
439		$this->getReference($node->getChild(0)),
440		);
441		break;
442		}
443	2	}
444
445		private function getVarName(QueryAstNode $node): string
446		{
447		return "var{$node->getId()}";
448		}
449
450		private function createReference(QueryAstNode $node): Expr
451		{
452		$reference = $this->php->var($this->getVarName($node));
453		$this->setReference($node, $reference);
454
455		return $reference;
456		}
457
458	2	private function setReference(QueryAstNode $node, Expr $expr): void
459		{
460	2	if (isset($this->references[$node->getId()])) {
461		throw new Exception\ReferenceAlreadyExistsException($node->getId());
462		}
463
464	2	$this->references[$node->getId()] = $expr;
465	2	}
466
467	3	private function hasReference(QueryAstNode $node): bool
468		{
469	3	return isset($this->references[$node->getId()]);
470		}
471
472	3	private function getReference(QueryAstNode $node): Expr
473		{
474	3	if (!isset($this->references[$node->getId()])) {
475	1	throw new Exception\ReferenceNotFoundException($node->getId());
476		}
477
478	2	return $this->references[$node->getId()];
479		}
480
481		private function addMethodCall(QueryAstNode $node, Expr $object, string $method, PhpAstNode ...$args): void
482		{
483		$methodCall = $this
484		->php
485		->methodCall($object, $method, $args);
486		$this->stmts[] = new Assign($this->createReference($node), $methodCall);
487		}
488		}
489

remorhaz / php-json-path

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CallbackBuilder::getVarName() A

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