// Parse a unary expression.
//
// unary-expr -> '+' unary-expr
// | '-' unary-expr
// | '!' unary-expr
// | postfix-expr
Expr*
Parser::unary_expr()
{
if (match_if(plus_tok)) {
Expr* e = unary_expr();
return on_pos(e);
} else if (match_if(minus_tok)) {
Expr* e = unary_expr();
return on_neg(e);
} else if (match_if(not_tok)) {
Expr* e = unary_expr();
return on_not(e);
} else {
return postfix_expr();
}
}
std::shared_ptr<expr> postfix_operator::left( expr_parser & /*parser*/, const std::u32string &op, const std::shared_ptr<expr> &left )
{
return std::make_shared<expr>( postfix_expr( op, left ) );
}
