CallbackBuilder::addEvaluatorMethodCall() - Code Metrics - Inspection of "Changelog updated" - remorhaz/php-json-path - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 0acfd1...8c96cb )

by Edward

created 2019-07-31 09:18 UTC

CallbackBuilder::addEvaluatorMethodCall() A

↳ Parent: CallbackBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
cc	1
eloc	4
c	0
b	0
f	0
nc	1
nop	3
dl	0
loc	6
ccs	0
cts	4
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;

final class CallbackBuilder extends AbstractTranslatorListener implements CallbackBuilderInterface
{

    private const ARG_INPUT = 'input';

    private const ARG_RUNTIME = 'runtime';

    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 $queryCallback;

    private $capabilities;

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

    public function getCallback(): callable
    {
        if (isset($this->queryCallback)) {
            return $this->queryCallback;
        }

        throw new Exception\QueryCallbackNotFoundException;
    }

    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);
    }

    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);

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

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

remorhaz / php-json-path

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CallbackBuilder::addEvaluatorMethodCall() A

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