CallbackBuilder::onFinish() - Code Metrics - Inspection of "Redundant matchers population removed" - remorhaz/php-json-path - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e6b663...fd87f3 )

by Edward

created 2019-07-29 07:29 UTC

CallbackBuilder::onFinish() A

↳ Parent: CallbackBuilder

Complexity

Conditions	2
Paths	1

Size

Total Lines	35
Code Lines	26

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	23
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	26
c	0
b	0
f	0
nc	1
nop	0
dl	0
loc	35
ccs	23
cts	23
cp	1
crap	2
rs	9.504

<?php
declare(strict_types=1);

namespace Remorhaz\JSON\Path\Query;

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\Data\Value\NodeValueInterface;
use Remorhaz\JSON\Path\Runtime\EvaluatorInterface;
use Remorhaz\JSON\Path\Value\ValueListInterface;
use Remorhaz\JSON\Path\Runtime\RuntimeInterface;
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_RUNTIME = 'runtime';

    private const ARG_EVALUATOR = 'evaluator';

    private const ARG_INPUT = 'input';

    private $php;

    private $references = [];

    private $runtime;

    private $evaluator;

    private $input;

    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->runtime = $this->php->var(self::ARG_RUNTIME);
        $this->evaluator = $this->php->var(self::ARG_EVALUATOR);
        $this->input = $this->php->var(self::ARG_INPUT);
    }

    public function onFinish(): void
    {
        $inputParam = $this
            ->php
            ->param(self::ARG_INPUT)
            ->setType(NodeValueInterface::class)
            ->getNode();
        $runtimeParam = $this
            ->php
            ->param(self::ARG_RUNTIME)
            ->setType(RuntimeInterface::class)
            ->getNode();
        $evaluatorParam = $this
            ->php
            ->param(self::ARG_EVALUATOR)
            ->setType(EvaluatorInterface::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, $runtimeParam, $evaluatorParam],
            ]
        );
        $return = new Return_($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:
                /** @see RuntimeInterface::getInput() */
                $this->addRuntimeMethodCall(
                    $node,
                    'getInput',
                    $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_FILTER_CONTEXT:
                /** @see RuntimeInterface::fetchFilterContext() */
                $this->addRuntimeMethodCall(
                    $node,
                    'fetchFilterContext',
                    $this->getReference($node->getChild(0)),
                );
                break;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

            case AstNodeType::MATCH_ELEMENT_SLICE:
                /** @see RuntimeInterface::matchElementSlice() */
                $this->addRuntimeMethodCall(
                    $node,
                    '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->addEvaluatorMethodCall(
                    $node,
                    'aggregate',
                    $this->php->val($node->getAttribute('name')),
                    $this->getReference($node->getChild(0)),
                );
                break;

            case AstNodeType::POPULATE_LITERAL:
                /** @see RuntimeInterface::populateLiteral() */
                $this->addRuntimeMethodCall(
                    $node,
                    'populateLiteral',
                    $this->getReference($node->getChild(0)),
                    $this->getReference($node->getChild(1)),
                );
                break;

            case AstNodeType::POPULATE_ARRAY_ELEMENTS:
                /** @see RuntimeInterface::populateArrayElements() */
                $this->addRuntimeMethodCall(
                    $node,
                    'populateArrayElements',
                    $this->getReference($node->getChild(0)),
                    new Arg(
                        $this->getReference($node->getChild(1)),
                        false,
                        true,
                    ),
                );
                break;

            case AstNodeType::CREATE_SCALAR:
                $attributes = $node->getAttributeList();
                // TODO: allow accessing null attributes
                $value = $this->php->val($attributes['value'] ?? null);
                /** @see RuntimeInterface::createScalar() */
                $this->addRuntimeMethodCall(
                    $node,
                    'createScalar',
                    $value,
                );
                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;

            case AstNodeType::CREATE_LITERAL_ARRAY:
                /** @see RuntimeInterface::createArray() */
                $this->addRuntimeMethodCall(
                    $node,
                    'createArray',
                    $this->getReference($node->getChild(0)),
                    new Arg(
                        $this->getReference($node->getChild(1)),
                        false,
                        true,
                    ),
                );
                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 addRuntimeMethodCall(QueryAstNode $node, string $method, PhpAstNode ...$args): void
    {
        $methodCall = $this
            ->php
            ->methodCall($this->runtime, $method, $args);
        $this->stmts[] = new Assign($this->createReference($node), $methodCall);
    }

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

remorhaz / php-json-path

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CallbackBuilder::onFinish() A

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