/**
* @param callable $pattern
* @param Collection $collection
* @return Collection[]
* @throws Exception
*/
protected function iterateOverCollections(callable $pattern, Collection $collection)
{
$result = [];
$collection->rewind();
foreach ($collection as $index => $token) {
$querySequence = new QuerySequence($collection, $index);
$patternResult = $pattern($querySequence);
if ($patternResult === null) {
continue;
}
if (!$patternResult instanceof Collection) {
throw new Exception('Invalid result from pattern callback. Expect Collection. Given:' . gettype($patternResult));
}
$result[] = $patternResult;
}
return $result;
}
/**
* If $constant is the start of the constant defining $key, updat its value to $value
*
* @param Collection $tokens
* @param Token $constant
* @param string $key
* @param mixed $value
*/
private function handleConstant(Collection $tokens, Token $constant, $key, $value)
{
$lineEnd = false;
$found = false;
$index = $constant->getIndex();
$tokens->rewind();
while ($lineEnd === false && ($constantToken = $tokens->getNext($index))) {
if ($constantToken->getValue() === ';') {
$lineEnd = true;
}
if ($constantToken->getType() === T_STRING && $constantToken->getValue() === $key) {
$found = true;
} elseif ($found === true) {
$this->attemptUpdate($constantToken, $value);
}
$index++;
}
}
/**
* @param Collection $collection
* @return Collection
*/
protected function getInvalidTokens(Collection $collection)
{
$resultCollection = new Collection();
$classBody = (new PatternMatcher($collection))->apply(new ClassPattern())->getCollections();
if (empty($classBody)) {
return $resultCollection;
}
foreach ($classBody as $body) {
if ($body->count() === 0) {
continue;
}
$resultCollection->append($body->getLast());
}
foreach ($resultCollection as $index => $token) {
if ($this->isValidBodyEndToken($token)) {
$resultCollection->offsetUnset($index);
}
}
$resultCollection->rewind();
return $resultCollection;
}
