public function setInput(StringInterface $string)
{
$this->result = null;
$this->lexer->setInput((string) $string);
$this->currentStyle = new Style();
return $this;
}
/**
* Parse the template to a regular expression
*
* @param string $template
* @return string
* @throws ParserException
*/
public function parse($template)
{
$this->lexer->setInput($template);
$regex = '';
while ($this->lexer->moveNext()) {
switch ($this->lexer->lookahead['type']) {
case Lexer::T_PLACEHOLDER_START:
$regex .= $this->parsePlaceholder();
break;
case Lexer::T_STRING:
$regex .= $this->lexer->lookahead['value'];
break;
default:
$this->syntaxError(sprintf('%s or %s', $this->lexer->getLiteral(Lexer::T_PLACEHOLDER_START), $this->lexer->getLiteral(Lexer::T_STRING)));
}
}
return "#^{$regex}\$#";
}