empty-block-stuff.php

$token = $stream->readToken();

if (strpos($token, '=') === 0) {
	// Evaluate {{= field*2}}
	$output .= $this->expression_parser->evaluate(substr($token, 1));

} else if (preg_match('/^#([\S]+)(?:[\s]+)([^\}\}]+)/', $token, $match)) {
	// Block {{#blockType blockArg}}
	$output .= $this->renderBlock($stream, $match[1], $match[2]);

} else if (preg_match('/^phrase(?:[\s]+)([\S]+)(?:[\s]+)([\S]+)/', $token, $match)) {
	// Phrase {{phrase field switchID}}
	$output .= $this->renderPhrase($match[1], $match[2]);

} else if (strpos($token, '!') === 0) {
	; // Comment

} else if (preg_match('/^([\S]+)(?:[\s]+)([\S]+)/', $token, $match)) {
	// A/an, plural, possessive, etc.
	$output .= $this->scopes[0]->evaluateScopeFunction($match[1], $match[2]);

} else if (preg_match('/^[\S]+$/', $token)) {
	// Standard Token
	$output .= $this->scopes[0]->parseToken($token);

} else {
	throw new Exception("I don't know what '$token' means.");
}