public FSAInt()
{
state = State.START;
val = 0;
raw = "";
suffix = TokenInt.Suffix.NONE;
}
public override sealed void ReadChar(Char ch)
{
raw += ch;
switch (state) {
case State.ERROR:
case State.END:
state = State.ERROR;
break;
case State.START:
if (ch == '0') {
state = State.Z;
} else if (Char.IsDigit(ch)) {
state = State.D;
val += ch - '0';
} else {
state = State.ERROR;
}
break;
case State.Z:
if (ch == 'x' || ch == 'X') {
state = State.ZX;
} else if (Utils.IsOctDigit(ch)) {
val *= 8;
val += ch - '0';
state = State.O;
} else if (ch == 'u' || ch == 'U') {
suffix = TokenInt.Suffix.U;
state = State.U;
} else if (ch == 'l' || ch == 'L') {
suffix = TokenInt.Suffix.L;
state = State.L;
} else {
state = State.END;
}
break;
case State.D:
if (Char.IsDigit(ch)) {
val *= 10;
val += ch - '0';
state = State.D;
} else if (ch == 'u' || ch == 'U') {
suffix = TokenInt.Suffix.U;
state = State.U;
} else if (ch == 'l' || ch == 'L') {
suffix = TokenInt.Suffix.L;
state = State.L;
} else {
state = State.END;
}
break;
case State.ZX:
if (Utils.IsHexDigit(ch)) {
val *= 0x10;
val += Utils.GetHexDigit(ch);
state = State.H;
} else {
state = State.ERROR;
}
break;
case State.O:
if (Utils.IsOctDigit(ch)) {
val *= 8;
val += ch - '0';
state = State.O;
} else if (ch == 'u' || ch == 'U') {
suffix = TokenInt.Suffix.U;
state = State.U;
} else if (ch == 'l' || ch == 'L') {
suffix = TokenInt.Suffix.L;
state = State.L;
} else {
state = State.END;
}
break;
case State.L:
if (ch == 'u' || ch == 'U') {
suffix = TokenInt.Suffix.UL;
state = State.UL;
} else {
state = State.END;
}
break;
case State.H:
if (Utils.IsHexDigit(ch)) {
val *= 0x10;
val += Utils.GetHexDigit(ch);
state = State.H;
} else if (ch == 'u' || ch == 'U') {
suffix = TokenInt.Suffix.U;
state = State.U;
} else if (ch == 'l' || ch == 'L') {
suffix = TokenInt.Suffix.L;
state = State.L;
} else {
state = State.END;
}
break;
case State.U:
if (ch == 'l' || ch == 'L') {
suffix = TokenInt.Suffix.UL;
state = State.UL;
} else {
state = State.END;
}
break;
case State.UL:
state = State.END;
break;
default:
state = State.ERROR;
break;
}
}
public override sealed void Reset()
{
state = State.START;
val = 0;
raw = "";
suffix = TokenInt.Suffix.NONE;
}
public ConstInt(Int64 value, TokenInt.Suffix suffix)
{
this.value = value;
this.suffix = suffix;
}
