private arithmetic_operator GetArithOp(Token token)
{
if (token == '+')
{
return new arithmetic_operator() { op = arith_operator.add };
}
else if (token == '-')
{
return new arithmetic_operator() { op = arith_operator.sub };
}
else if (token == '*')
{
return new arithmetic_operator() { op = arith_operator.mul };
}
else if (token == '/')
{
return new arithmetic_operator() { op = arith_operator.div };
}
else if (token == '%')
{
return new arithmetic_operator() { op = arith_operator.mod };
}
else if (token == '^')
{
return new arithmetic_operator() { op = arith_operator.pow };
}
else
{
throw new Exception("Token is not an operator: " + token);
}
}
private bool IsTokenArithmeticOperator(Token token)
{
if (token == TokenType.symbol)
{
return (token == '+' || token == '-' || token == '*' || token == '/' || token == '%' || token == '^');
}
else
{
return false;
}
}
private int ArithmeticOperatorPriority(Token token)
{
if (token == '+' || token == '-')
{
return 1;
}
else if (token == '*' || token == '/' || token == '%')
{
return 2;
}
else if (token == '^')
{
return 4;
}
else if (token == '(')
{
return 5;
}
else
{
return 0;
}
}