Parser::fastForward() - Code Metrics - cerbero90/json-parser - Measure and Improve Code Quality continuously with Scrutinizer

Parser::fastForward() A
last analyzed 2025-01-17 18:53 UTC

↳ Parent: Parser

Complexity

Conditions	4
Paths	4

Size

Total Lines	10
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	4

Importance

Changes

Metric	Value
cc	4
eloc	5
c	0
b	0
f	0
nc	4
nop	0
dl	0
loc	10
ccs	5
cts	5
cp	1
crap	4
rs	10

<?php

namespace Cerbero\JsonParser\Tokens;

use Cerbero\JsonParser\Decoders\ConfigurableDecoder;
use Cerbero\JsonParser\Exceptions\SyntaxException;
use Cerbero\JsonParser\Tokens\CompoundBegin;
use Cerbero\JsonParser\Tokens\CompoundEnd;
use Cerbero\JsonParser\Tokens\Token;
use Cerbero\JsonParser\ValueObjects\Config;
use Cerbero\JsonParser\ValueObjects\State;
use Generator;
use IteratorAggregate;
use Traversable;

/**
 * The JSON parser.
 *
 * @implements IteratorAggregate<string|int, mixed>
 */
final class Parser implements IteratorAggregate
{
    /**
     * The decoder handling potential errors.
     *
     * @var ConfigurableDecoder
     */
    private readonly ConfigurableDecoder $decoder;

    /**
     * Whether the parser is fast-forwarding.
     *
     * @var bool
     */
    private bool $isFastForwarding = false;

    /**
     * Instantiate the class.
     *
     * @param Generator<int, Token> $tokens
     * @param Config $config
     */
    public function __construct(private readonly Generator $tokens, private readonly Config $config)
    {
        $this->decoder = new ConfigurableDecoder($config);

    }

    /**
     * Retrieve the JSON fragments
     *
     * @return Traversable<string|int, mixed>
     */
    public function getIterator(): Traversable
    {
        $state = new State($this->config->pointers, fn () => new self($this->lazyLoad(), clone $this->config));

        foreach ($this->tokens as $token) {
            if ($this->isFastForwarding) {
                continue;
            } elseif (!$token->matches($state->expectedToken)) {
                throw new SyntaxException($token);
            }

            $state->mutateByToken($token);

            if (!$token->endsChunk() || $state->tree->isDeep()) {
                continue;
            }

            if ($state->hasBuffer()) {
                /** @var string|int $key */
                $key = $this->decoder->decode($state->tree->currentKey());
                $value = $this->decoder->decode($state->value());
                $wrapper = $value instanceof self ? ($this->config->wrapper)($value) : $value;

                yield $key => $state->callPointer($wrapper, $key);

                $value instanceof self && $value->fastForward();
            }

            if ($state->canStopParsing()) {
                break;
            }
        }
    }

    /**
     * Retrieve the generator to lazy load the current compound
     *
     * @return Generator<int, Token>
     */
    public function lazyLoad(): Generator
    {
        $depth = 0;

        do {
            yield $token = $this->tokens->current();

            if ($token instanceof CompoundBegin) {
                $depth++;
            } elseif ($token instanceof CompoundEnd) {
                $depth--;
            }

            $depth > 0 && $this->tokens->next();
        } while ($depth > 0);
    }

    /**
     * Eager load the current compound into an array
     *
     * @return array<string|int, mixed>
     */
    public function toArray(): array
    {
        $index = 0;
        $array = [];
        $hasWildcards = false;

        foreach ($this as $key => $value) {
            if (isset($array[$index][$key])) {
                $index++;
                $hasWildcards = true;
            }

            $turnsIntoArray = is_object($value) && method_exists($value, 'toArray');
            $array[$index][$key] = $turnsIntoArray ? $value->toArray() : $value;
        }

        return $hasWildcards || empty($array) ? $array : $array[0];
    }

    /**
     * Fast-forward the parser
     *
     * @return void
     */
    public function fastForward(): void
    {
        if (!$this->tokens->valid()) {
            return;
        }

        $this->isFastForwarding = true;

        foreach ($this as $value) {
            $value instanceof self && $value->fastForward(); // @codeCoverageIgnore
        }
    }
}


1		<?php
2
3		namespace Cerbero\JsonParser\Tokens;
4
5		use Cerbero\JsonParser\Decoders\ConfigurableDecoder;
6		use Cerbero\JsonParser\Exceptions\SyntaxException;
7		use Cerbero\JsonParser\Tokens\CompoundBegin;
8		use Cerbero\JsonParser\Tokens\CompoundEnd;
9		use Cerbero\JsonParser\Tokens\Token;
10		use Cerbero\JsonParser\ValueObjects\Config;
11		use Cerbero\JsonParser\ValueObjects\State;
12		use Generator;
13		use IteratorAggregate;
14		use Traversable;
15
16		/**
17		* The JSON parser.
18		*
19		* @implements IteratorAggregate<string\|int, mixed>
20		*/
21		final class Parser implements IteratorAggregate
22		{
23		/**
24		* The decoder handling potential errors.
25		*
26		* @var ConfigurableDecoder
27		*/
28		private readonly ConfigurableDecoder $decoder;
29
30		/**
31		* Whether the parser is fast-forwarding.
32		*
33		* @var bool
34		*/
35		private bool $isFastForwarding = false;
36
37		/**
38		* Instantiate the class.
39		*
40		* @param Generator<int, Token> $tokens
41		* @param Config $config
42		*/
43	373	public function __construct(private readonly Generator $tokens, private readonly Config $config)
44		{
45	373	$this->decoder = new ConfigurableDecoder($config);
		0 ignored issues – show Bug introduced 2023-06-14 22:26 UTC by Report Bug Copy Issue Report The property `decoder` is declared read-only in `Cerbero\JsonParser\Tokens\Parser`. Loading history...
46		}
47
48		/**
49		* Retrieve the JSON fragments
50		*
51		* @return Traversable<string\|int, mixed>
52		*/
53	361	public function getIterator(): Traversable
54		{
55	361	$state = new State($this->config->pointers, fn () => new self($this->lazyLoad(), clone $this->config));
56
57	361	foreach ($this->tokens as $token) {
58	357	if ($this->isFastForwarding) {
59	9	continue;
60	357	} elseif (!$token->matches($state->expectedToken)) {
61	1	throw new SyntaxException($token);
62		}
63
64	357	$state->mutateByToken($token);
65
66	357	if (!$token->endsChunk() \|\| $state->tree->isDeep()) {
67	357	continue;
68		}
69
70	355	if ($state->hasBuffer()) {
71		/** @var string\|int $key */
72	265	$key = $this->decoder->decode($state->tree->currentKey());
73	265	$value = $this->decoder->decode($state->value());
74	264	$wrapper = $value instanceof self ? ($this->config->wrapper)($value) : $value;
75
76	264	yield $key => $state->callPointer($wrapper, $key);
77
78	264	$value instanceof self && $value->fastForward();
79		}
80
81	354	if ($state->canStopParsing()) {
82	162	break;
83		}
84		}
85		}
86
87		/**
88		* Retrieve the generator to lazy load the current compound
89		*
90		* @return Generator<int, Token>
91		*/
92	34	public function lazyLoad(): Generator
93		{
94	34	$depth = 0;
95
96		do {
97	34	yield $token = $this->tokens->current();
98
99	34	if ($token instanceof CompoundBegin) {
100	34	$depth++;
101	34	} elseif ($token instanceof CompoundEnd) {
102	34	$depth--;
103		}
104
105	34	$depth > 0 && $this->tokens->next();
106	34	} while ($depth > 0);
107		}
108
109		/**
110		* Eager load the current compound into an array
111		*
112		* @return array<string\|int, mixed>
113		*/
114	191	public function toArray(): array
115		{
116	191	$index = 0;
117	191	$array = [];
118	191	$hasWildcards = false;
119
120	191	foreach ($this as $key => $value) {
121	137	if (isset($array[$index][$key])) {
122	22	$index++;
123	22	$hasWildcards = true;
124		}
125
126	137	$turnsIntoArray = is_object($value) && method_exists($value, 'toArray');
127	137	$array[$index][$key] = $turnsIntoArray ? $value->toArray() : $value;
128		}
129
130	191	return $hasWildcards \|\| empty($array) ? $array : $array[0];
131		}
132
133		/**
134		* Fast-forward the parser
135		*
136		* @return void
137		*/
138	34	public function fastForward(): void
139		{
140	34	if (!$this->tokens->valid()) {
141	25	return;
142		}
143
144	9	$this->isFastForwarding = true;
145
146	9	foreach ($this as $value) {
147		$value instanceof self && $value->fastForward(); // @codeCoverageIgnore
148		}
149		}
150		}
151

cerbero90 / json-parser

Parser::fastForward() A last analyzed 2025-01-17 18:53 UTC

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Parser::fastForward() A
last analyzed 2025-01-17 18:53 UTC