/// <summary>
/// The "token_list" is assumed to be f ( ... ).
/// </summary>
void parse_function_arguments(TokenList token_list)
{
int index = 2; // start of the current argument
while (index < token_list.Count)
{
// look for comma
int comma_index = token_list.find_token_outside_of_paren(
TokenType.Comma, index, token_list.Count - 1);
// Handle final argument case
if (comma_index < 0)
{
// the rest of this token_list is treated as one argument
int right_paren_index = token_list.find_token_outside_of_paren(
TokenType.Right_Paren, index, token_list.Count - 1);
if (right_paren_index < 0)
{
throw new Exception("Unable to locate the ending ')' in \"" + token_list + "\".");
}
if (right_paren_index == index)
{
// The function might be f(), totally no argument at all.
// In this case, the index = 2.
if (index == 2)
{
return;
}
throw new Exception("Unable to parse the final argument for \"" + token_list + "\".");
}
else
{
arguments.add_argument(token_list, index, right_paren_index - 1);
index = right_paren_index + 1;
}
}
// Handle empty argument error, as in f(1,2,,3)
else if (comma_index == index)
{
throw new Exception("Empty argument detected inside \"" + token_list + "\".");
}
// Handle the standard case
else
{
arguments.add_argument(token_list, index, comma_index - 1);
index = comma_index + 1;
}
}
}
