CallbackBuilder::onStart() - Code Metrics - Inspection of "Query provides more of context on failure" - remorhaz/php-json-path - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 56ea51...5cce8c )

by Edward

created 2019-08-05 15:49 UTC

CallbackBuilder::onStart() A

↳ Parent: CallbackBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	7
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	5
c	0
b	0
f	0
nc	1
nop	1
dl	0
loc	7
ccs	6
cts	6
cp	1
crap	1
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);
    }

    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]);
        $this->callback = eval($this->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		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	3	}
107
108		public function onFinish(): void
109		{
110		$inputParam = $this
111		->php
112		->param(self::ARG_INPUT)
113		->setType(NodeValueListInterface::class)
114		->getNode();
115		$valueListFetcherParam = $this
116		->php
117		->param(self::ARG_VALUE_LIST_FETCHER)
118		->setType(ValueListFetcherInterface::class)
119		->getNode();
120		$evaluatorParam = $this
121		->php
122		->param(self::ARG_EVALUATOR)
123		->setType(EvaluatorInterface::class)
124		->getNode();
125		$literalFactoryParam = $this
126		->php
127		->param(self::ARG_LITERAL_FACTORY)
128		->setType(LiteralFactoryInterface::class)
129		->getNode();
130		$matcherFactoryParam = $this
131		->php
132		->param(self::ARG_MATCHER_FACTORY)
133		->setType(MatcherFactoryInterface::class)
134		->getNode();
135		$stmts = array_map(
136		function (PhpAstNode $stmt): PhpAstNode {
137		return $stmt instanceof Expr ? new Expression($stmt): $stmt;
138		},
139		$this->stmts
140		);
141
142		$closure = new Expr\Closure(
143		[
144		'stmts' => $stmts,
145		'returnType' => ValueListInterface::class,
146		'params' => [
147		$inputParam,
148		$valueListFetcherParam,
149		$evaluatorParam,
150		$literalFactoryParam,
151		$matcherFactoryParam
152		],
153		]
154		);
155		$return = new Return_($closure);
156
157		$this->callbackCode = (new Standard)->prettyPrint([$return]);
158		$this->callback = eval($this->callbackCode);
		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...
159		}
160
161	1	public function onBeginProduction(QueryAstNode $node, PushInterface $stack): void
162		{
163	1	$stack->push(...array_reverse($node->getChildList()));
164	1	}
165
166		/**
167		* @param QueryAstNode $node
168		* @throws UniLexException
169		*/
170	3	public function onFinishProduction(QueryAstNode $node): void
171		{
172	3	if ($this->hasReference($node)) {
173		return;
174		}
175	3	switch ($node->getName()) {
176		case AstNodeType::GET_INPUT:
177	2	$this->setReference($node, $this->input);
178	2	break;
179
180		case AstNodeType::SET_OUTPUT:
181	3	$this->capabilities = new Capabilities(
182	3	$node->getAttribute('is_definite'),
183	3	$node->getAttribute('is_path'),
184		);
185	3	$this->stmts[] = new Return_($this->getReference($node->getChild(0)));
186	2	break;
187
188		case AstNodeType::FETCH_CHILDREN:
189		/** @see ValueListFetcherInterface::fetchChildren() */
190		$this->addMethodCall(
191		$node,
192		$this->valueListFetcher,
193		'fetchChildren',
194		$this->getReference($node->getChild(0)),
195		$this->getReference($node->getChild(1)),
196		);
197		break;
198
199		case AstNodeType::FETCH_CHILDREN_DEEP:
200		/** @see ValueListFetcherInterface::fetchChildrenDeep() */
201		$this->addMethodCall(
202		$node,
203		$this->valueListFetcher,
204		'fetchChildrenDeep',
205		$this->getReference($node->getChild(0)),
206		$this->getReference($node->getChild(1)),
207		);
208		break;
209
210		case AstNodeType::FETCH_FILTER_CONTEXT:
211		/** @see ValueListFetcherInterface::fetchFilterContext() */
212		$this->addMethodCall(
213		$node,
214		$this->valueListFetcher,
215		'fetchFilterContext',
216		$this->getReference($node->getChild(0)),
217		);
218		break;
219
220		case AstNodeType::SPLIT_FILTER_CONTEXT:
221		/** @see ValueListFetcherInterface::splitFilterContext() */
222		$this->addMethodCall(
223		$node,
224		$this->valueListFetcher,
225		'splitFilterContext',
226		$this->getReference($node->getChild(0)),
227		);
228		break;
229
230		case AstNodeType::JOIN_FILTER_RESULTS:
231		/** @see ValueListFetcherInterface::joinFilterResults() */
232		$this->addMethodCall(
233		$node,
234		$this->valueListFetcher,
235		'joinFilterResults',
236		$this->getReference($node->getChild(0)),
237		$this->getReference($node->getChild(1)),
238		);
239		break;
240
241		case AstNodeType::FILTER:
242		/** @see ValueListFetcherInterface::fetchFilteredValues() */
243		$this->addMethodCall(
244		$node,
245		$this->valueListFetcher,
246		'fetchFilteredValues',
247		$this->getReference($node->getChild(0)),
248		$this->getReference($node->getChild(1)),
249		);
250		break;
251
252		case AstNodeType::EVALUATE:
253		/** @see EvaluatorInterface::evaluate() */
254		$this->addMethodCall(
255		$node,
256		$this->evaluator,
257		'evaluate',
258		$this->getReference($node->getChild(0)),
259		$this->getReference($node->getChild(1)),
260		);
261		break;
262
263		case AstNodeType::EVALUATE_LOGICAL_OR:
264		/** @see EvaluatorInterface::logicalOr() */
265		$this->addMethodCall(
266		$node,
267		$this->evaluator,
268		'logicalOr',
269		$this->getReference($node->getChild(0)),
270		$this->getReference($node->getChild(1)),
271		);
272		break;
273
274		case AstNodeType::EVALUATE_LOGICAL_AND:
275		/** @see EvaluatorInterface::logicalAnd() */
276		$this->addMethodCall(
277		$node,
278		$this->evaluator,
279		'logicalAnd',
280		$this->getReference($node->getChild(0)),
281		$this->getReference($node->getChild(1)),
282		);
283		break;
284
285		case AstNodeType::EVALUATE_LOGICAL_NOT:
286		/** @see EvaluatorInterface::logicalNot() */
287		$this->addMethodCall(
288		$node,
289		$this->evaluator,
290		'logicalNot',
291		$this->getReference($node->getChild(0)),
292		);
293		break;
294
295		case AstNodeType::CALCULATE_IS_EQUAL:
296		/** @see EvaluatorInterface::isEqual() */
297		$this->addMethodCall(
298		$node,
299		$this->evaluator,
300		'isEqual',
301		$this->getReference($node->getChild(0)),
302		$this->getReference($node->getChild(1)),
303		);
304		break;
305
306		case AstNodeType::CALCULATE_IS_GREATER:
307		/** @see EvaluatorInterface::isGreater() */
308		$this->addMethodCall(
309		$node,
310		$this->evaluator,
311		'isGreater',
312		$this->getReference($node->getChild(0)),
313		$this->getReference($node->getChild(1)),
314		);
315		break;
316
317		case AstNodeType::CALCULATE_IS_REGEXP:
318		/** @see EvaluatorInterface::isRegExp() */
319		$this->addMethodCall(
320		$node,
321		$this->evaluator,
322		'isRegExp',
323		$this->php->val($node->getAttribute('pattern')),
324		$this->getReference($node->getChild(0)),
325		);
326		break;
327
328		case AstNodeType::MATCH_ANY_CHILD:
329		/** @see MatcherFactoryInterface::matchAnyChild() */
330		$this->addMethodCall(
331		$node,
332		$this->matcherFactory,
333		'matchAnyChild',
334		);
335		break;
336
337		case AstNodeType::MATCH_PROPERTY_STRICTLY:
338		/** @see MatcherFactoryInterface::matchPropertyStrictly() */
339		$this->addMethodCall(
340		$node,
341		$this->matcherFactory,
342		'matchPropertyStrictly',
343		...array_map(
344		[$this->php, 'val'],
345		$node->getAttribute('names')
346		),
347		);
348		break;
349
350		case AstNodeType::MATCH_ELEMENT_STRICTLY:
351		/** @see MatcherFactoryInterface::matchElementStrictly() */
352		$this->addMethodCall(
353		$node,
354		$this->matcherFactory,
355		'matchElementStrictly',
356		...array_map(
357		[$this->php, 'val'],
358		$node->getAttribute('indexes')
359		),
360		);
361		break;
362
363		case AstNodeType::MATCH_ELEMENT_SLICE:
364		/** @see MatcherFactoryInterface::matchElementSlice() */
365		$this->addMethodCall(
366		$node,
367		$this->matcherFactory,
368		'matchElementSlice',
369		$this
370		->php
371		->val($node->getAttribute('hasStart') ? $node->getAttribute('start') : null),
372		$this
373		->php
374		->val($node->getAttribute('hasEnd') ? $node->getAttribute('end') : null),
375		$this
376		->php
377		->val($node->getAttribute('step')),
378		);
379		break;
380
381		case AstNodeType::AGGREGATE:
382		/** @see EvaluatorInterface::aggregate() */
383		$this->addMethodCall(
384		$node,
385		$this->evaluator,
386		'aggregate',
387		$this->php->val($node->getAttribute('name')),
388		$this->getReference($node->getChild(0)),
389		);
390		break;
391
392		case AstNodeType::CREATE_LITERAL_SCALAR:
393		$attributes = $node->getAttributeList();
394		$value = $attributes['value'] ?? null; // TODO: allow pass null in attribute
395		/** @see LiteralFactoryInterface::createScalar() */
396		$this->addMethodCall(
397		$node,
398		$this->literalFactory,
399		'createScalar',
400		$this->getReference($node->getChild(0)),
401		$this->php->val($value),
402		);
403		break;
404
405		case AstNodeType::CREATE_LITERAL_ARRAY:
406		/** @see LiteralFactoryInterface::createArray() */
407		$this->addMethodCall(
408		$node,
409		$this->literalFactory,
410		'createArray',
411		$this->getReference($node->getChild(0)),
412		new Arg(
413		$this->getReference($node->getChild(1)),
414		false,
415		true,
416		),
417		);
418		break;
419
420		case AstNodeType::CREATE_ARRAY:
421		// [ X:APPEND_TO_ARRAY ]
422		$items = [];
423		foreach ($node->getChildList() as $child) {
424		$items[] = $this->getReference($child);
425		}
426		$this->stmts[] = new Assign(
427		$this->createReference($node),
428		$this->php->val($items),
429		);
430		break;
431
432		case AstNodeType::APPEND_TO_ARRAY:
433		// [ 0:<value> ]
434		$this->setReference(
435		$node,
436		$this->getReference($node->getChild(0)),
437		);
438		break;
439		}
440	2	}
441
442		private function getVarName(QueryAstNode $node): string
443		{
444		return "var{$node->getId()}";
445		}
446
447		private function createReference(QueryAstNode $node): Expr
448		{
449		$reference = $this->php->var($this->getVarName($node));
450		$this->setReference($node, $reference);
451
452		return $reference;
453		}
454
455	2	private function setReference(QueryAstNode $node, Expr $expr): void
456		{
457	2	if (isset($this->references[$node->getId()])) {
458		throw new Exception\ReferenceAlreadyExistsException($node->getId());
459		}
460
461	2	$this->references[$node->getId()] = $expr;
462	2	}
463
464	3	private function hasReference(QueryAstNode $node): bool
465		{
466	3	return isset($this->references[$node->getId()]);
467		}
468
469	3	private function getReference(QueryAstNode $node): Expr
470		{
471	3	if (!isset($this->references[$node->getId()])) {
472	1	throw new Exception\ReferenceNotFoundException($node->getId());
473		}
474
475	2	return $this->references[$node->getId()];
476		}
477
478		private function addMethodCall(QueryAstNode $node, Expr $object, string $method, PhpAstNode ...$args): void
479		{
480		$methodCall = $this
481		->php
482		->methodCall($object, $method, $args);
483		$this->stmts[] = new Assign($this->createReference($node), $methodCall);
484		}
485		}
486

remorhaz / php-json-path

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CallbackBuilder::onStart() A

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