static int value_of(lua_State * L) {
auto it = value_of(to_token_table(L, 1));
if (it) {
push_boolean(L, it->is_command());
push_name(L, it->value());
push_integer(L, it->expr_precedence());
return 3;
} else {
push_nil(L);
return 1;
}
}
// Parses an expression, returning the final result.
Operand expr(Parser *parser) {
return expr_precedence(parser, PREC_NONE);
}
optional<unsigned> get_expr_precedence(token_table const & s, char const * token) {
auto it = find(s, token);
return it ? optional<unsigned>(it->expr_precedence()) : optional<unsigned>();
}