/**
*
* @param TokenStream $stream
* @param int $indention
* @return TokenStreamBuilder
*/
public function addStream(TokenStream $stream, $indention = 1)
{
if ($indention > 0) {
$stream->indent($indention);
}
$this->stream->append($stream);
return $this;
}
function scan($source)
{
//todo: track indentation
$stream = new TokenStream();
$depth = 0;
foreach (token_get_all($source) as $token) {
if (is_array($token)) {
list($token, $text) = $token;
} elseif (is_string($token)) {
$text = $token;
$token = -1;
}
if ($token === T_CURLY_OPEN || $token === T_DOLLAR_OPEN_CURLY_BRACES || $text === '{') {
++$depth;
} elseif ($text == '}') {
--$depth;
}
$stream->append(new Token($text, $token, $depth));
}
return $stream;
}
/**
* get substream
* @param int $from
* @param int $to
*/
public function get($from, $to)
{
$tokenStream = new TokenStream();
$tokenStream->append(array_slice($this->tokens, $from, $to - $from + 1));
return $tokenStream;
}
