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<?php |
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namespace Cerbero\JsonParser; |
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use Cerbero\JsonParser\Pointers\Pointers; |
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use Cerbero\JsonParser\Tokens\Token; |
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use Cerbero\JsonParser\Tokens\Tokens; |
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/** |
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* The JSON parsing state. |
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* |
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*/ |
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final class State |
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{ |
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/** |
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* The JSON tree. |
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* |
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* @var Tree |
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*/ |
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private Tree $tree; |
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/** |
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* The JSON buffer. |
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* |
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* @var string |
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*/ |
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private string $buffer = ''; |
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/** |
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* Whether an object key is expected. |
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* |
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* @var bool |
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*/ |
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public bool $expectsKey = false; |
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/** |
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* The expected token. |
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* |
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* @var int |
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*/ |
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public int $expectedToken = Tokens::COMPOUND_BEGIN; |
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/** |
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* Instantiate the class. |
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* |
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* @param Pointers $pointers |
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*/ |
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public function __construct(private Pointers $pointers) |
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{ |
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$this->tree = new Tree($this->pointers); |
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} |
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/** |
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* Retrieve the JSON tree |
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* |
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* @return Tree |
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*/ |
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public function tree(): Tree |
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{ |
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return $this->tree; |
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} |
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/** |
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* Retrieve the current key of the JSON tree |
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* @return string|int |
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*/ |
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public function key(): string|int |
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{ |
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return $this->tree->currentKey(); |
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} |
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/** |
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* Determine whether the parser can stop parsing |
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* |
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* @return bool |
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*/ |
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public function canStopParsing(): bool |
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{ |
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return $this->pointers->wereFoundInTree($this->tree); |
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} |
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/** |
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* Call the current pointer callback |
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* |
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* @param mixed $value |
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* @param mixed $key |
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* @return mixed |
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*/ |
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public function callPointer(mixed $value, mixed $key): mixed |
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{ |
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return $this->pointers->matching()->call($value, $key); |
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} |
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/** |
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* Mutate state depending on the given token |
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* |
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* @param Token $token |
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* @return void |
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*/ |
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public function mutateByToken(Token $token): void |
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{ |
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$shouldTrackTree = $this->tree->shouldBeTracked(); |
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if ($shouldTrackTree && $this->expectsKey) { |
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$this->tree->traverseKey($token); |
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} elseif ($shouldTrackTree && $token->isValue() && !$this->tree->inObject()) { |
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$this->tree->traverseArray(); |
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} |
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if ($this->tree->isMatched() && ((!$this->expectsKey && $token->isValue()) || $this->tree->isDeep())) { |
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$this->buffer .= $token; |
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$this->pointers->markAsFound(); |
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} |
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$token->mutateState($this); |
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} |
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/** |
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* Determine whether the buffer contains tokens |
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* |
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* @return bool |
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*/ |
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public function hasBuffer(): bool |
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{ |
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return $this->buffer != ''; |
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} |
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/** |
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* Retrieve the value from the buffer and reset it |
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* |
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* @return string |
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*/ |
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public function value(): string |
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{ |
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$buffer = $this->buffer; |
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$this->buffer = ''; |
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return $buffer; |
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} |
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} |
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cerbero90 /
json-parser
