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<?php |
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/* |
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* Copyright (c) Nate Brunette. |
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* Distributed under the MIT License (http://opensource.org/licenses/MIT) |
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*/ |
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declare(strict_types=1); |
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namespace Tebru\Gson\Internal; |
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use Tebru\Gson\Exception\JsonParseException; |
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use Tebru\Gson\ReaderContext; |
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use Tebru\Gson\JsonToken; |
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/** |
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* Class JsonDecodeReader |
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* |
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* @author Nate Brunette <[email protected]> |
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*/ |
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final class JsonDecodeReader extends JsonReader |
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{ |
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/** |
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* Constructor |
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* |
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* @param string $json |
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* @param ReaderContext $context |
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* @throws \Tebru\Gson\Exception\JsonParseException If the json cannot be decoded |
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*/ |
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public function __construct(string $json, ReaderContext $context) |
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{ |
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$decodedJson = \json_decode($json); |
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if (\json_last_error() !== JSON_ERROR_NONE) { |
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throw new JsonParseException(\sprintf('Could not decode json, the error message was: "%s"', \json_last_error_msg())); |
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} |
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$this->payload = $decodedJson; |
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$this->context = $context; |
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$this->updateStack($decodedJson); |
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} |
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/** |
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* Update internal stack and stack types, appending values |
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* |
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* @param mixed $decodedJson |
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*/ |
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private function updateStack($decodedJson): void |
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{ |
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$type = \gettype($decodedJson); |
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switch ($type) { |
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case 'object': |
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$this->stack[$this->stackSize] = null; |
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$this->stackTypes[$this->stackSize++] = JsonToken::END_OBJECT; |
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$this->stack[$this->stackSize] = $decodedJson; |
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$this->stackTypes[$this->stackSize++] = JsonToken::BEGIN_OBJECT; |
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break; |
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case 'array': |
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$this->stack[$this->stackSize] = null; |
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$this->stackTypes[$this->stackSize++] = JsonToken::END_ARRAY; |
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$this->stack[$this->stackSize] = $decodedJson; |
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$this->stackTypes[$this->stackSize++] = JsonToken::BEGIN_ARRAY; |
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break; |
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case 'string': |
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$this->stack[$this->stackSize] = $decodedJson; |
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$this->stackTypes[$this->stackSize++] = JsonToken::STRING; |
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break; |
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case 'boolean': |
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$this->stack[$this->stackSize] = $decodedJson; |
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$this->stackTypes[$this->stackSize++] = JsonToken::BOOLEAN; |
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break; |
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case 'integer': |
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case 'double': |
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$this->stack[$this->stackSize] = $decodedJson; |
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$this->stackTypes[$this->stackSize++] = JsonToken::NUMBER; |
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break; |
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default: |
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$this->stack[$this->stackSize] = null; |
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$this->stackTypes[$this->stackSize++] = JsonToken::NULL; |
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} |
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} |
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/** |
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* Consumes the next token and asserts it's the beginning of a new array |
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* |
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* @return void |
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*/ |
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public function beginArray(): void |
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{ |
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$this->pathIndices[$this->pathIndex++]++; |
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$this->pathIndices[$this->pathIndex] = -1; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::BEGIN_ARRAY) { |
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$this->assertionFailed(JsonToken::BEGIN_ARRAY); |
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} |
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$array = $this->stack[--$this->stackSize]; |
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$size = \count($array); |
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for ($i = $size - 1; $i >= 0; $i--) { |
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$this->updateStack($array[$i]); |
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} |
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} |
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/** |
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* Consumes the next token and asserts it's the beginning of a new object |
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* |
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* @return void |
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*/ |
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public function beginObject(): void |
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{ |
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$this->pathIndices[$this->pathIndex++]++; |
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$this->pathIndices[$this->pathIndex] = -1; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::BEGIN_OBJECT) { |
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$this->assertionFailed(JsonToken::BEGIN_OBJECT); |
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} |
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$vars = \array_reverse(\get_object_vars($this->stack[--$this->stackSize]), true); |
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foreach ($vars as $key => $value) { |
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$this->updateStack($value); |
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$this->stack[$this->stackSize] = $key; |
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$this->stackTypes[$this->stackSize++] = JsonToken::NAME; |
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} |
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} |
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/** |
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* Consumes the value of the next token, asserts it's a boolean and returns it |
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* |
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* @return bool |
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*/ |
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public function nextBoolean(): bool |
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{ |
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$this->pathIndices[$this->pathIndex]++; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::BOOLEAN) { |
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$this->assertionFailed(JsonToken::BOOLEAN); |
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} |
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return (bool)$this->stack[--$this->stackSize]; |
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} |
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/** |
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* Consumes the value of the next token, asserts it's a double and returns it |
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* |
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* @return double |
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*/ |
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public function nextDouble(): float |
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{ |
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$this->pathIndices[$this->pathIndex]++; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::NUMBER) { |
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$this->assertionFailed(JsonToken::NUMBER); |
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} |
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return (float)$this->stack[--$this->stackSize]; |
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} |
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/** |
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* Consumes the value of the next token, asserts it's an int and returns it |
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* |
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* @return int |
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*/ |
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public function nextInteger(): int |
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{ |
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$this->pathIndices[$this->pathIndex]++; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::NUMBER) { |
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1 |
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$this->assertionFailed(JsonToken::NUMBER); |
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} |
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return (int)$this->stack[--$this->stackSize]; |
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} |
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/** |
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* Consumes the value of the next token, asserts it's a string and returns it |
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* |
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* @return string |
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*/ |
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public function nextString(): string |
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{ |
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$this->pathIndices[$this->pathIndex]++; |
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if ($this->stackTypes[$this->stackSize - 1] !== JsonToken::STRING) { |
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2 |
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if ($this->stackTypes[$this->stackSize - 1] === JsonToken::NAME) { |
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1 |
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return $this->nextName(); |
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} |
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1 |
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$this->assertionFailed(JsonToken::STRING); |
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} |
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return (string)$this->stack[--$this->stackSize]; |
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} |
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} |
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tebru /
gson-php
