protected function parseError(TokenStream $ts, Parser $parser, $msg)
{
$current = $ts->current();
$result = $parser->onCommit(function ($commit) use($parser) {
$this->fail("Unexpected commit on {$parser->type()}().");
})->withErrorLevel(Error::ENABLED)->parse($ts);
$this->assertSame($current, $ts->current());
$this->assertInstanceOf(Error::class, $result);
$this->assertSame(implode(PHP_EOL, (array) $msg), $result->message());
}
function concat(TokenStream $ts) : TokenStream
{
$buffer = [];
while ($t = $ts->current()) {
$str = (string) $t;
if (!preg_match('/^\\w+$/', $str)) {
throw new YayException("Only valid identifiers are mergeable, '{$t->dump()}' given.");
}
$buffer[] = $str;
$ts->next();
}
return TokenStream::fromSequence(new Token(T_STRING, implode('', $buffer)));
}
protected function parseDictKey(TokenStream $stream)
{
$stream->expect(array(Tokens::T_IDENTIFIER, Tokens::T_STRING));
$token = $stream->current();
switch ($token->name) {
case Tokens::T_STRING:
$key = $this->cleanString($token->value);
break;
case Tokens::T_IDENTIFIER:
default:
$key = $token->value;
break;
}
$stream->next();
return $key;
}
private function parseIdentifier(TokenStream $tokens)
{
$cur = $tokens->current();
$node = new Node\IdentifierNode($cur->getValue(), $cur);
$tokens->next();
return $node;
}
