public List<Command> Run(string input)
{
Scanner scanner = new Scanner(new StringReader(input));
Parser parser = new Parser(scanner.Tokens);
Interpreter interpreter = new Interpreter(parser.Result, false);
Interpreter.Clear();
Interpreter.Run();
return Interpreter.Out;
}
private void Scan(TextReader Input)
{
StringBuilder ac;
char c;
int currentCol = 0;
while(Peek(Input, out c)) {
currentCol = Column;
if(char.IsWhiteSpace(c) || c == '~') {
if(c == '\n') {
Line++;
Column = 1;
} else Column++;
Input.Read();
} else if(c == ';') {
Input.Read();
if(!Peek(Input, out c) || c != '_') {
while(Peek(Input, out c) && c != '\r' && c != '\n') Input.Read();
} else Input.Read(); // defined functions by the interpreter
} else if(char.IsLetter(c) || c == '_' || c == ';') {
ac = new StringBuilder();
while(Peek(Input, out c) && (char.IsLetter(c) || char.IsDigit(c) || c == '_' || c == '?')) {
ac.Append(c);
Input.Read();
Column++;
}
if((ac.ToString() == "include" || ac.ToString() == "language") && Peek(Input, out c)) {
Input.Read();
string pre_name = ac.ToString();
string pre_val = "";
ac = new StringBuilder();
while(Peek(Input, out c) && c != '\n' && c != '\r') {
ac.Append(c);
Input.Read();
}
pre_val = ac.ToString().Trim();
if(pre_name == "include") {
try {
Scanner sc = new Scanner(new StreamReader(pre_val), pre_val); // opens an include file
Result = sc.Tokens.Concat(Result).ToList();
} catch {
throw new Exception(2 + " File not found " + Line + " " + Column + 3);
}
} else if(pre_name == "language") {
Tokens.Add(new Token("language", Line, currentCol, file));
Tokens.Add(new Token(pre_val, Line, Column + 2, file));
}
} else {
Result.Add(new Token(ac.ToString(), Line, currentCol, file));
}
} else if(c == '"') {
Result.Add(new Token(AsIs, Line, currentCol, file));
Input.Read();
Column++;
ac = new StringBuilder();
bool escape = false;
while(Peek(Input, out c) && (Terminate(c) & escape || !Terminate(c) && !escape) && c != '\n') {
if(c == '\\' && !escape) escape = true;
else escape = false;
if(!escape) ac.Append(c);
Input.Read();
Column++;
}
Result.Add(new Token(ac, Line, currentCol, file));
} else if(char.IsDigit(c) || c == Config.DecimalPoint) {
bool wasdot = false;
ac = new StringBuilder();
while(Peek(Input, out c) && (char.IsDigit(c) || !wasdot && (c == Config.DecimalPoint))) {
if(c == Config.DecimalPoint) {
c = '.';
wasdot = true;
}
ac.Append(c);
Input.Read();
Column++;
}
if(wasdot && c != Config.DecimalPoint) {
try {
double d = double.Parse(ac.ToString(), CultureInfo.InvariantCulture);
Result.Add(new Token(d, Line, currentCol, file));
} catch {
Result.Add(new Token(ac.ToString(), Line, currentCol, file));
}
} else {
try {
int i = int.Parse(ac.ToString(), CultureInfo.InvariantCulture);
Result.Add(new Token(i, Line, currentCol, file));
} catch {
Result.Add(new Token(ac.ToString(), Line, currentCol, file));
}
}
} else {
switch(c) {
case '+': Result.Add(new Token(Add, Line, currentCol, file)); Input.Read(); break;
case '-': Result.Add(new Token(Subtract, Line, currentCol, file)); Input.Read(); break;
case '*': Result.Add(new Token(Multiply, Line, currentCol, file)); Input.Read(); break;
case '/': Result.Add(new Token(Divide, Line, currentCol, file)); Input.Read(); break;
case '=': Result.Add(new Token(Equal, Line, currentCol, file)); Input.Read(); break;
case ':': Result.Add(new Token(ValueOf, Line, currentCol, file)); Input.Read(); break;
case '>':
Input.Read();
if(Peek(Input, out c) && c == '=') {
Result.Add(new Token(BiggerEqual, Line, currentCol, file));
Input.Read();
} else {
Result.Add(new Token(Bigger, Line, currentCol, file));
}
break;
case '<':
Input.Read();
if(Peek(Input, out c) && c == '=') {
Result.Add(new Token(SmallerEqual, Line, currentCol, file));
Input.Read();
} else if(Peek(Input, out c) && c == '>') {
Result.Add(new Token(NotEqual, Line, currentCol, file));
Input.Read();
} else {
Result.Add(new Token(Smaller, Line, currentCol, file));
}
break;
case '&': Result.Add(new Token(And, Line, currentCol, file)); Input.Read(); break;
case '|': Result.Add(new Token(Or, Line, currentCol, file)); Input.Read(); break;
case '^': Result.Add(new Token(Xor, Line, currentCol, file)); Input.Read(); break;
case '!': Result.Add(new Token(Not, Line, currentCol, file)); Input.Read(); break;
case '(': Result.Add(new Token(BracketStart, Line, currentCol, file)); Input.Read(); break;
case ')': Result.Add(new Token(BracketEnd, Line, currentCol, file)); Input.Read(); break;
case '[': Result.Add(new Token(BodyStart, Line, currentCol, file)); Input.Read(); break;
case ']': Result.Add(new Token(BodyEnd, Line, currentCol, file)); Input.Read(); break;
default: Result.Add(new Token(c, Line, currentCol, file)); Input.Read(); break;
}
Column++;
}
}
}
