void AssertTokenType(Tokenizer::Token::Type actual, Tokenizer::Token::Type expected);
void AssertTokenType(Tokenizer::Token::Type actual, Tokenizer::Token::Type expected, const std::string &msg);
bool BeginningOfLiteral(const Tokenizer::Token &) const;
void AssertTokenType(Tokenizer::Token::Type actual, Tokenizer::Token::Type expected);
void AssertTokenType(Tokenizer::Token::Type actual, Tokenizer::Token::Type expected, const std::string &msg);
bool BeginningOfLiteral(const Tokenizer::Token &) const;