public string ReadNumber(out Region reg)
{
reg = StartRegion();
if ((CurChar == '+' || CurChar == '-') && Peek(1) == '.' && !IsDigit(Peek(2)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1), Peek(2) }).Inspect()}...");
}
else if ((CurChar == '+' || CurChar == '-') && !IsDigit(Peek(1)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
else if (CurChar == '.' && !IsDigit(Peek(1)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
else if (!IsDigit(CurChar))
{
Throw($"Expected number, got {CurChar.Inspect()}");
}
if (CurChar == '0' && Peek(1) == 'x')
{
Move(2);
while (!EOF && IsHexDigit(CurChar))
{
Move();
}
reg.End();
return(reg.ToString());
}
Move();
if (CurChar == '.')
{
Move();
}
while (!EOF && IsDigit(CurChar))
{
Move();
}
if (CurChar == '.')
{
Move();
while (!EOF && IsDigit(CurChar))
{
Move();
}
}
reg.End();
return(reg.ToString());
}
public string ReadIdentifier(out Region reg)
{
reg = StartRegion();
if (CurChar != '_' && !(CurChar >= 'a' && CurChar <= 'z') && !(CurChar >= 'A' && CurChar <= 'Z'))
{
Throw($"Expected identifier start, got {CurChar.Inspect()}");
}
Move();
while (!EOF && (CurChar == '_' || (CurChar >= 'a' && CurChar <= 'z') || (CurChar >= 'A' && CurChar <= 'Z') || (CurChar >= '0' && CurChar <= '9')))
{
Move();
}
reg.End();
return(reg.ToString());
}
public string ReadPunctuation(out Region reg)
{
if (!IsPunctuation(CurChar))
{
Throw($"Expected punctuation, got {CurChar.Inspect()}");
}
var c = CurChar;
reg = StartRegion();
var p = Peek(1);
var p2 = Peek(2);
reg.End();
Move();
// complex punctuation
if (c == '=' && p == '=')
{
reg.End(); Move(); return("==");
}
if (c == '<' && p == '=')
{
reg.End(); Move(); return("<=");
}
if (c == '>' && p == '=')
{
reg.End(); Move(); return(">=");
}
if (c == '.' && p == '.' && p2 == '.')
{
reg.End(); Move(); Move(); return("...");
}
if (c == '.' && p == '.')
{
reg.End(); Move(); return("..");
}
if (c == '~' && p == '=')
{
reg.End(); Move(); return("~=");
}
if (c == ':' && p == ':')
{
reg.End(); Move(); return("::");
}
return(c.ToString());
}
public string ReadNumber(out Region reg)
{
//INT : Digit+
//HEX : '0' [xX] HexDigit+
//FLOAT : Digit+ '.' Digit* ExponentPart?
// | '.' Digit+ ExponentPart?
// | Digit+ ExponentPart
//HEX_FLOAT : '0' [xX] HexDigit+ '.' HexDigit* HexExponentPart?
// | '0' [xX] '.' HexDigit+ HexExponentPart?
// | '0' [xX] HexDigit+ HexExponentPart
//
// ExponentPart : [eE] [+-]? Digit+
// HexExponentPart : [pP] [+-]? Digit+
#region 校验
if ((CurChar == '+' || CurChar == '-') && Peek(1) == '.' && !IsDigit(Peek(2)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1), Peek(2) }).Inspect()}...");
}
else if ((CurChar == '+' || CurChar == '-') && !IsDigit(Peek(1)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
else if (CurChar == '.' && !IsDigit(Peek(1)))
{
Throw($"Expected number, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
else if (!IsDigit(CurChar))
{
Throw($"Expected number, got {CurChar.Inspect()}");
}
#endregion
reg = StartRegion();
if (CurChar == '0' && Peek(1) == 'x')
{
Move(2);
while (!EOF && IsHexDigit(CurChar))
{
Move();
}
if (CurChar == '.')
{
Move();
while (!EOF && IsHexDigit(CurChar))
{
Move();
}
}
if (CurChar == 'p' || CurChar == 'P')
{
Move();
if (!TryReadDigits())
{
Throw($"Expected number with HexExponentPart, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
}
reg.End();
return(reg.ToString());
}
Move();
if (CurChar == '.')
{
Move();
}
while (!EOF && IsDigit(CurChar))
{
Move();
}
if (CurChar == '.')
{
Move();
while (!EOF && IsDigit(CurChar))
{
Move();
}
}
if (CurChar == 'e' || CurChar == 'E')
{
Move();
if (!TryReadDigits())
{
Throw($"Expected number with ExponentPart, got {new string(new char[] { CurChar, Peek(1) }).Inspect()}...");
}
}
reg.End();
return(reg.ToString());
}
public override string ToString()
{
return(CurChar.ToString());
}
static void Main(string[] args)
{
string StringPlane = "что !,:? ты сейчас \"сделал\"?";
MachStates State = MachStates.ScanNormal;//init to 1
char CurChar;
string CurWord = "";
List <string> finalList = new List <string>()
{
""
}; //создаем пустой лист
//заготовка под ввод с консоли
/*
* Console.ReadLine()...
* if(!Plane.length)
* >gg, wp, close*/
Console.WriteLine(StringPlane);
Console.WriteLine("\n");
for (int Inx = 0; Inx < StringPlane.Length; Inx++)
{
CurChar = StringPlane[Inx];
/*обработка состояния*/
switch (State)
{
case MachStates.ScanNormal:
#if (DEB)
Console.WriteLine("Entered Scan Normal!");
#endif
if (CurChar == '\"')
{
if (CurWord != "")
{
finalList.Add(CurWord);
}
CurWord = "\"";
State = MachStates.ScanQuoted;
}
//то есть Текущий символ не был найден в списке restricted
else if (ScanRestrictedChars(CurChar, restricted_chars) != 0)
{
if (CurWord != "")
{
finalList.Add(CurWord);
CurWord = "";
}
State = MachStates.ScanPunctuation;
}
else
{
CurWord += CurChar;
}
break;
case MachStates.ScanQuoted:
#if (DEB)
Console.WriteLine("Entered Scan Quoted!");
#endif
CurWord += CurChar;
if (CurChar == '\"')
{
finalList.Add(CurWord);
CurWord = " ";
State = MachStates.ScanNormal;
}
break;
case MachStates.ScanPunctuation:
#if (DEB)
Console.WriteLine("Entered Scan Punc!");
#endif
if (CurChar == '"')
{
CurWord = "\"";
State = MachStates.ScanQuoted;
}
else if (ScanRestrictedChars(CurChar, restricted_chars) == 0)
{
CurWord = CurChar.ToString();
State = MachStates.ScanNormal;
}
break;
}
/*if(State == MachStates.ScanQuoted) { Console.WriteLine("ERROR:по достижению строки текущее состояние - ScanQuoted"); }
* if (CurWord != " ")
* finalList.Add(CurWord);*/
}
finalList.ForEach(delegate(String name)
{
Console.Write(name);
}
);
Console.ReadLine();
}
