public function testItemAt()
{
$parse = new Parse(new Map(['abc', 'def', 'abc']));
$actual = $parse->parse('itemAt("1")');
$this->assertEquals("def", $actual->getValue());
}
/**
* parseInternal
* @param $mapping
* @param $until
* @return ObjectInterface
* @throws CatchableException
* @throws \Exception
*/
private function parseInternal($mapping, $until)
{
$mappingLength = strlen($mapping);
$totalOutput = null;
$currentMapping = '';
$inQuote = false;
$currentObject = $this->getOriginalObject();
$closingParenthesisFound = false;
for ($i = 0; $i < $mappingLength; $i++) {
$char = $mapping[$i];
$atEnd = $i + 1 == $mappingLength;
$nextChar = $atEnd ? null : $mapping[$i + 1];
if ($char == '\\') {
if ($atEnd) {
$this->throwMappingException('An escape character "\\" must either be escaped or not at the end of a mapping', $mapping, $i);
}
//Add the next character since we are escaping it
$currentMapping .= $nextChar;
$i++;
//Skip the next character
continue;
}
if ($inQuote) {
if ($char == '"') {
if (!($atEnd || $nextChar == '+' || $nextChar == '.' || $until == self::UNTIL_CLOSING_COMMA_OR_CLOSING_PARENTHESIS && ($nextChar == ')' || $nextChar == ','))) {
$this->throwMappingException('A closing quote "\\"" must either be followed by the end of the mapping, a closing parenthesis, a plus, a "," or a .', $mapping, $i);
}
$inQuote = false;
if (is_numeric($currentMapping)) {
$currentObject = new Number($currentMapping);
} else {
$currentObject = new String($currentMapping);
}
$currentMapping = '';
continue;
}
$currentMapping .= $char;
continue;
}
if ($char == '"') {
if ($currentMapping != '') {
$this->throwMappingException('A beginning quote "\\"" must be at the beginning of a mapping', $mapping, $i);
}
$inQuote = true;
continue;
}
if ($char == '(') {
/** @type Parsable[] $parameters */
$parameters = [];
$i++;
//Offset for opening parenthesis
$subMapping = substr($mapping, $i);
if ($subMapping == '') {
$this->throwMappingException('There are more opening parenthesis than closing parenthesis', $mapping, $i);
}
while (strlen($subMapping) > 0) {
$parse = new Parse($currentObject);
$parameter = $parse->parseInternal($subMapping, self::UNTIL_CLOSING_COMMA_OR_CLOSING_PARENTHESIS);
$isLastParameter = substr($subMapping, $parse->getLastIndex(), 1) == ')';
if (!$isLastParameter || $parse->getLastIndex() > 0) {
$parameters[] = $parameter;
}
$i += $parse->getLastIndex() + 1;
$subMapping = substr($subMapping, $parse->getLastIndex() + 1);
if ($isLastParameter) {
break;
//Found closing parenthesis
}
}
$currentObject = $this->call($mapping, $i, $currentObject, $currentMapping, $parameters);
$currentMapping = '';
continue;
}
if ($char == ')') {
if ($until != self::UNTIL_CLOSING_COMMA_OR_CLOSING_PARENTHESIS) {
$this->throwMappingException('There are more closing parenthesis than opening parenthesis', $mapping, $i);
}
$closingParenthesisFound = true;
$this->setLastIndex($i);
break;
}
if ($char == ',') {
if ($until != self::UNTIL_CLOSING_COMMA_OR_CLOSING_PARENTHESIS) {
$this->throwMappingException('Commas are only allowed inside of parameters for methods', $mapping, $i);
}
$closingParenthesisFound = true;
$this->setLastIndex($i);
break;
}
if ($char == '+') {
$currentObject = $this->call($mapping, $i, $currentObject, $currentMapping);
$this->addToTotalOutput($currentObject);
//Reset mapping/object for next part
$currentMapping = '';
$currentObject = $this->getOriginalObject();
continue;
}
if ($char == '.') {
$currentObject = $this->call($mapping, $i, $currentObject, $currentMapping);
$currentMapping = '';
continue;
}
$currentMapping .= $char;
}
if (!$closingParenthesisFound && $until == self::UNTIL_CLOSING_COMMA_OR_CLOSING_PARENTHESIS) {
$this->throwMappingException('There are more opening parenthesis than closing parenthesis', $mapping, $i);
}
if ($inQuote) {
$this->throwMappingException('There is no matching closing quote to an opening quote', $mapping, $mappingLength);
}
$currentObject = $this->call($mapping, $i, $currentObject, $currentMapping);
$this->addToTotalOutput($currentObject);
return $this->getTotalOutput();
}
