public string check(string T)
{
T = T.ToLower();
string type = "Error";
if (Classes.ContainsKey(T))
{
type = Classes[T].ToString();
}
else
{
int i = 0;
if (ScannerClassification.is_letter(T[i]))
{
while (i < T.Length && (ScannerClassification.is_letter(T[i]) || ScannerClassification.is_digit(T[i])))
{
i++;
}
if (i == T.Length)
{
type = Token_Class.Identifier.ToString();
}
else
{
i = 0;
}
}
else if (ScannerClassification.is_digit(T[i]))
{
int dots = 0;
while (i < T.Length && (ScannerClassification.is_digit(T[i]) || (T[i] == '.' && dots == 0)))
{
if (T[i] == '.')
{
dots++;
}
++i;
}
if (dots < 2 && i == T.Length)
{
type = Token_Class.constant.ToString();
}
}
else if (i <= T.Length - 2 && ScannerClassification.is_two_operator(T[i], T[i + 1]))
{
if (T[i] == '/' && T[i + 1] == '/')
{
type = Token_Class.comment.ToString();
}
else if (T[i] == '/' && T[i + 1] == '*')
{
if (T[T.Length - 2] == '*' && T[T.Length - 1] == '/')
{
type = Token_Class.comment.ToString();
}
else
{
type = Token_Class.Error.ToString();
}
}
else
{
type = Token_Class.two_operator.ToString();
}
}
else if (ScannerClassification.is_one_operator(T[i]))
{
//type = Type.Operator.ToString();
if (T[i] == '"')
{
if (T[T.Length - 1] == '"')
{
type = Token_Class.String.ToString();
}
}
else
{
type = Token_Class.Error.ToString();
}
}
}
return(type);
}
public List <String> scan(String source_code)
{
NewLine.Add(-1);
List <String> tokens = new List <String>();
for (int i = 0; i < source_code.Length; i++)
{
int cur = i;
String lex = "";
if (ScannerClassification.is_letter(source_code[cur]))
{
while (cur < source_code.Length && (ScannerClassification.is_letter(source_code[cur]) || ScannerClassification.is_digit(source_code[cur])))
{
lex += source_code[cur];
cur++;
}
tokens.Add(lex);
i = cur - 1;
}
else if (ScannerClassification.is_digit(source_code[cur]))
{
int dots = 0;
while (cur < source_code.Length && (ScannerClassification.is_digit(source_code[cur]) || source_code[cur] == '.' || ScannerClassification.is_letter(source_code[cur])))
{
if (source_code[cur] == '.')
{
dots++;
}
lex += source_code[cur];
cur++;
}
tokens.Add(lex);
i = cur - 1;
}
else if (cur != source_code.Length - 1 && ScannerClassification.is_two_operator(source_code[cur], source_code[cur + 1]))
{
lex += source_code[cur];
lex += source_code[cur + 1];
if (source_code[cur] == '/' && source_code[cur + 1] == '/')
{
cur = cur + 2;
while (cur < source_code.Length && source_code[cur] != '\n')
{
lex += source_code[cur];
++cur;
// MessageBox.Show(lex.ToString());
}
}
else if (source_code[cur] == '/' && source_code[cur + 1] == '*')
{
cur = cur + 2;
while (cur < source_code.Length - 1 && source_code[cur] != '*' && source_code[cur + 1] != '/')
{
lex += source_code[cur];
cur += 1;
// MessageBox.Show(lex.ToString());
}
if (cur < source_code.Length - 1 && source_code[cur] == '*' && source_code[cur + 1] == '/')
{
lex += source_code[cur];
lex += source_code[cur + 1];
cur++;
}
}
else
{
cur++;
}
// MessageBox.Show(lex.ToString());
i = cur;
tokens.Add(lex);
}
else if (ScannerClassification.is_one_operator(source_code[cur]))
{
lex += source_code[cur];
if (source_code[cur] == '"')
{
//string tmp ="";
// tmp += source_code[cur];
++cur;
while (cur < source_code.Length && source_code[cur] != '"' && source_code[cur] != '\n' && source_code[cur] != ';')
{
lex += source_code[cur];
++cur;
}
if (source_code[cur] == '"')
{
lex += source_code[cur];
}
}
i = cur;
tokens.Add(lex);
}
else
{
cur = i;
if (source_code[cur] == ' ' || source_code[cur] == '\r' || source_code[cur] == '\n')
{
if (source_code[cur] == '\n')
{
NewLine.Add(tokens.Count - 1);
}
continue;
}
// else tokens.Add(source_code[cur].ToString());
// MessageBox.Show(source_code.Length.ToString());
while (cur < source_code.Length && source_code[cur] != ' ' && source_code[cur] != '\r' && source_code[cur] != '\n')
{
lex += source_code[cur]; ++cur;
}
tokens.Add(lex);
i = cur - 1;
}
}
NewLine.Add(tokens.Count - 1);
return(tokens);
}