void Get()
{
while (true) {
t = la;
la = _scanner.Scan();
if (la.kind <= maxT) {
errDist++;
break;
}
la = t;
}
}
public string Parse()
{
la = Scanner.EmptyToken;
try {
Get();
ScriptVM();
Expect(0);
} catch (Exception ex) {
return ex.Message;
}
return null;
}
public string Load(string s)
{
if (string.IsNullOrEmpty (s)) {
return "No source code";
}
buffer.Data = s;
Reset();
try {
Token t;
while (true) {
t = NextToken ();
if (t.kind == 0) {
break;
}
if (t.kind == Parser._STRING) {
t.val = t.val.Substring (1, t.val.Length - 2);
}
_tokens.Add (t);
//Console.WriteLine ("token " + (_tokens.Count - 1) + " : " + t.kind + " => " + t.val);
}
} catch (Exception ex) {
return ex.Message;
}
return null;
}
public string CallFunction()
{
la = Scanner.EmptyToken;
_isReturned = false;
RetVal = new ScriptVar();
try {
Get();
Block();
} catch (Exception ex) {
return ex.Message;
}
return null;
}
// get the next token (possibly a token already seen during peeking)
public Token NextToken()
{
while (ch == ' ' ||
ch >= 9 && ch <= 10 || ch == 13
) NextCh();
if (ch == '/' && Comment0() ||ch == '/' && Comment1()) return NextToken();
int recKind = noSym;
int recEnd = pos;
t = new Token();
t.pos = pos; t.col = col; t.line = line; t.charPos = charPos;
int state;
if (start.ContainsKey(ch)) { state = (int) start[ch]; }
else { state = 0; }
tlen = 0; AddCh();
switch (state) {
case -1: { t.kind = eofSym; break; } // NextCh already done
case 0: {
if (recKind != noSym) {
tlen = recEnd - t.pos;
SetScannerBehindT();
}
t.kind = recKind; break;
} // NextCh already done
case 1:
recEnd = pos; recKind = 1;
if (ch >= '0' && ch <= '9' || ch >= 'A' && ch <= 'Z' || ch == '_' || ch >= 'a' && ch <= 'z') {AddCh(); goto case 1;}
else {t.kind = 1; t.val = new String(tval, 0, tlen); CheckLiteral(); return t;}
case 2:
recEnd = pos; recKind = 2;
if (ch >= '0' && ch <= '9') {AddCh(); goto case 2;}
else if (ch == '.') {AddCh(); goto case 3;}
else {t.kind = 2; break;}
case 3:
if (ch >= '0' && ch <= '9') {AddCh(); goto case 4;}
else {goto case 0;}
case 4:
recEnd = pos; recKind = 2;
if (ch >= '0' && ch <= '9') {AddCh(); goto case 4;}
else {t.kind = 2; break;}
case 5:
if (ch <= '&' || ch >= '(' && ch <= 65535) {AddCh(); goto case 5;}
else if (ch == 39) {AddCh(); goto case 6;}
else {goto case 0;}
case 6:
{t.kind = 3; break;}
case 7:
{t.kind = 5; break;}
case 8:
{t.kind = 6; break;}
case 9:
{t.kind = 7; break;}
case 10:
{t.kind = 8; break;}
case 11:
{t.kind = 9; break;}
case 12:
{t.kind = 11; break;}
case 13:
if (ch == '|') {AddCh(); goto case 14;}
else {goto case 0;}
case 14:
{t.kind = 12; break;}
case 15:
if (ch == '&') {AddCh(); goto case 16;}
else {goto case 0;}
case 16:
{t.kind = 13; break;}
case 17:
{t.kind = 14; break;}
case 18:
if (ch == '=') {AddCh(); goto case 19;}
else {goto case 0;}
case 19:
{t.kind = 15; break;}
case 20:
{t.kind = 18; break;}
case 21:
{t.kind = 19; break;}
case 22:
{t.kind = 20; break;}
case 23:
{t.kind = 21; break;}
case 24:
{t.kind = 22; break;}
case 25:
{t.kind = 23; break;}
case 26:
{t.kind = 30; break;}
case 27:
recEnd = pos; recKind = 25;
if (ch == '=') {AddCh(); goto case 17;}
else {t.kind = 25; break;}
case 28:
recEnd = pos; recKind = 16;
if (ch == '=') {AddCh(); goto case 20;}
else {t.kind = 16; break;}
case 29:
recEnd = pos; recKind = 17;
if (ch == '=') {AddCh(); goto case 21;}
else {t.kind = 17; break;}
}
t.val = new String(tval, 0, tlen);
return t;
}
