long double Calculation::Resolve(const string& str) const
throw(invalid_argument)
{
if (!CheckParenthesis(str))
throw invalid_argument("The number of left parenthesis is not equal with"
" the number of right parenthesis");
/*
* TODO
* To test special cases.
* 5 + * 2
* 5 + 2 *
* * 5 + 2
*
* 5 (2 + 3)
* (2 + 3) 5
*
* 5 2 * 3
* 5 sin(90)
*
* sin(90) cos(90)
* sin 90 cos(45)
*
* To test if there are the functions that are called.
*/
Lexer l;
list<Token*> tokens = l.Split(str);
long double r;
if (l.PrintErrors())
{
throw invalid_argument("Invalid input");
}
if (tokens.size() == 0)
{
throw invalid_argument("No tokens");
}
AddZero(tokens);
try
{
r = Resolve(tokens);
for (auto it = tokens.begin(); it != tokens.end(); ++it)
delete (*it);
return r;
}
catch (invalid_argument& e)
{
for (auto it = tokens.begin(); it != tokens.end(); ++it)
delete (*it);
throw e;
}
}
