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<?php |
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namespace PhpHocon\Token\Parser; |
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use PhpHocon\Token\Tokens; |
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use PhpHocon\Token\Value; |
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use PhpHocon\Token\Value\BooleanValue; |
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use PhpHocon\Token\Value\NullValue; |
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use PhpHocon\Token\Value\NumberValue; |
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use PhpHocon\Token\Value\StringValue; |
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class ValueParser implements Parser |
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{ |
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/** |
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* @var array |
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*/ |
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private $illegalCharacters = [ |
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Tokens::EQUALS, |
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Tokens::COLON, |
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Tokens::SPACE, |
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Tokens::NEW_LINE |
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]; |
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/** |
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* @var bool |
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*/ |
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private $isQuotedString; |
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/** |
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* @var string |
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*/ |
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private $quoteCharacter; |
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/** |
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* @param ParserState $state |
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* @return boolean |
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*/ |
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public function canParse(ParserState $state) |
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{ |
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return !$state->isParsingKey() && $this->canStartGatheringValue($state); |
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} |
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/** |
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* @param ParserState $state |
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* @return ParseResult |
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*/ |
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public function parse(ParserState $state) |
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{ |
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$characters = $state->getCharacters(); |
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$value = ''; |
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if (true === $this->isQuotedString = $this->isQuotedString($state->getHeadCharacter())) { |
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$this->quoteCharacter = array_shift($characters); |
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} |
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while ($this->canStillParseValue($characters)) { |
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$value .= array_shift($characters); |
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} |
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if (count($characters) && $characters[0] === $this->quoteCharacter) { |
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array_shift($characters); |
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} |
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return new ParseResult( |
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new ParserState($characters, $state->getBraceCount()), |
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$this->getObjectForValue($value) |
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); |
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} |
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/** |
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* @param ParserState $state |
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* @return bool |
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*/ |
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private function canStartGatheringValue(ParserState $state) |
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{ |
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return !in_array($state->getHeadCharacter(), $this->illegalCharacters); |
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} |
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/** |
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* @param string $character |
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* @return bool |
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*/ |
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private function isQuotedString($character) |
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{ |
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return in_array($character, [Tokens::APOSTROPHE, Tokens::SPEECH_MARK]); |
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} |
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/** |
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* @param string[] $characters |
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* @return bool |
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*/ |
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private function canStillParseValue(array $characters) |
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{ |
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if (!count($characters)) { |
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return false; |
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} |
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if ($this->isQuotedString && $characters[0] !== $this->quoteCharacter) { |
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return true; |
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} |
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if ($this->isQuotedString && $characters[0] === $this->quoteCharacter) { |
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return false; |
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} |
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return !in_array($characters[0], $this->illegalCharacters); |
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} |
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/** |
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* @param string $value |
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* @return Value |
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*/ |
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private function getObjectForValue($value) |
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{ |
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if (is_numeric($value)) { |
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return new NumberValue($this->convertStringToNumber($value)); |
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} elseif ($this->valueIsBoolean($value)) { |
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return new BooleanValue($value === 'true'); |
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} elseif ($this->valueIsNull($value)) { |
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return new NullValue(); |
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} |
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return new StringValue($value); |
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} |
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/** |
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* @param string $value |
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* @return float|int |
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*/ |
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private function convertStringToNumber($value) |
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{ |
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return strpos($value, '.') === false ? (int)$value : (float)$value; |
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} |
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/** |
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* @param string $value |
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* @return bool |
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*/ |
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private function valueIsBoolean($value) |
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{ |
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return $value === 'true' || $value === 'false'; |
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} |
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/** |
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* @param string $value |
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* @return bool |
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*/ |
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private function valueIsNull($value) |
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{ |
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return $value === 'null'; |
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} |
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} |
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shanethehat /
php-hocon
