public static string AddTokenText(string prefix, string text, Token tok)
{
if (tok.IsBinary)
{
return string.Format("{0} ({1}, offset 0x{2}) {3}", prefix, TokenTypeString(tok.Type), tok.Offset.ToString("X"), text);
}
return string.Format("{0} ({1}, line {2}, col {3} ) {4}", prefix, TokenTypeString(tok.Type), tok.Line, tok.Column, text);
}
public Element(Token keyToken, Parser parser)
{
this.keyToken = keyToken;
Token n;
do
{
n = parser.AdvanceToNextToken();
if (n == null)
{
throw (new Exception("unexpected end of file, expected closing bracket"));
}
if (n.Type == TokenType.Data)
{
tokens.Add(n);
n = parser.AdvanceToNextToken();
if (n == null)
{
throw (new Exception("unexpected end of file, expected bracket, comma or key"));
}
TokenType ty = n.Type;
if (ty != TokenType.OpenBracket && ty != TokenType.CloseBracket && ty != TokenType.Comma && ty != TokenType.Key)
{
throw (new Exception("unexpected token; expected bracket, comma or key"));
}
}
if (n.Type == TokenType.OpenBracket)
{
compound = new Scope(parser);
// current token should be a TOK_CLOSE_BRACKET
n = parser.CurrentToken;
Debug.Assert(n != null);
if (n.Type != TokenType.CloseBracket)
{
throw (new Exception("expected closing bracket"));
}
parser.AdvanceToNextToken();
return;
}
}
while (n.Type != TokenType.Key && n.Type != TokenType.CloseBracket);
}
/// <summary>
/// wrapper around ParseTokenAsString() with ParseError handling
/// </summary>
public static string ParseTokenAsString(Token t)
{
string err;
string i = ParseTokenAsString(t, out err);
if (!string.IsNullOrEmpty(err))
{
throw (new ParseException(err, t));
}
return i;
}
public static string ParseTokenAsString(Token t, out string errOut)
{
errOut = null;
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return "";
}
if (t.IsBinary)
{
var data = t.BinaryContents;
if (data[0] != 'S')
{
errOut = "failed to parse S(tring), unexpected data type (binary)";
return "";
}
// read string length
int len = BitConverter.ToInt32(data, 1);
Debug.Assert(t.End - t.Begin == 5 + len);
return Encoding.Default.GetString(data, 5, len);
}
var length = t.End - t.Begin;
if (length < 2)
{
errOut = "token is too short to hold a string";
return "";
}
var s = t.BinaryContents;
if (s[0] != '\"' || s[s.Length-1] != '\"')
{
errOut = "expected double quoted string";
return "";
}
return Encoding.Default.GetString(s, 1, length - 2);
}
public static long ParseTokenAsInt64(Token t, out string errOut)
{
errOut = null;
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return 0;
}
if (t.IsBinary)
{
byte[] data = t.BinaryContents;
if (data[0] != 'L')
{
errOut = "failed to parse Int64, unexpected data type";
return 0;
}
long id = BitConverter.ToInt64(data, 1);
return id;
}
Debug.Assert(t.End - t.Begin > 0);
return long.Parse(t.StringContents);
}
public static int ParseTokenAsInt(Token t)
{
string err;
int i = ParseTokenAsInt(t, out err);
if (!string.IsNullOrEmpty(err))
{
throw (new ParseException(err, t));
}
return i;
}
public static int ParseTokenAsInt(Token t, out string errOut)
{
errOut = null;
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return 0;
}
if (t.IsBinary)
{
byte[] data = t.BinaryContents;
if (data[0] != 'I')
{
errOut = "failed to parse I(nt), unexpected data type (binary)";
return 0;
}
int ival = BitConverter.ToInt32(data, 1);
return ival;
}
Debug.Assert(t.End - t.Begin > 0);
return int.Parse(t.StringContents);
}
public static UInt64 ParseTokenAsID(Token t)
{
string err;
ulong i = ParseTokenAsID(t, out err);
if (!string.IsNullOrEmpty(err))
{
throw (new ParseException(err, t));
}
return i;
}
public static ulong ParseTokenAsID(Token t, out string errOut)
{
errOut = null;
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return 0;
}
if (t.IsBinary)
{
var data = t.BinaryContents;
if (data[0] != 'L')
{
errOut = "failed to parse ID, unexpected data type, expected L(ong) (binary)";
return 0L;
}
ulong id = BitConverter.ToUInt64(data, 1);
return id;
}
int length = t.End - t.Begin;
Debug.Assert(length > 0);
ulong result;
if (ulong.TryParse(t.StringContents, out result))
{
return result;
}
else
{
errOut = "failed to parse ID (text)";
return 0;
}
}
public static float ParseTokenAsFloat(Token t, out string errOut)
{
errOut = "";
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return 0.0f;
}
if (t.IsBinary)
{
var data = t.BinaryContents;
if (data[0] != 'F' && data[0] != 'D')
{
errOut = "failed to parse F(loat) or D(ouble), unexpected data type (binary)";
return 0.0f;
}
if (data[0] == 'F')
{
return BitConverter.ToSingle(data, 1);
}
else
{
return (float)BitConverter.ToDouble(data, 1);
}
}
return float.Parse(t.StringContents);
}
public static ulong ParseTokenAsDim(Token t, out string errOut)
{
errOut = null;
if (t.Type != TokenType.Data)
{
errOut = "expected TOK_DATA token";
return 0;
}
if (t.IsBinary)
{
var data = t.BinaryContents;
if (data[0] != 'L')
{
errOut = "failed to parse ID, unexpected data type, expected L(ong) (binary)";
return 0L;
}
ulong id = BitConverter.ToUInt64(data, 1);
return id;
}
if (t.StringContents[0] != '*')
{
errOut = "expected asterisk before array dimension";
return 0;
}
uint length = (uint)t.End - (uint)t.Begin;
if (length == 0)
{
errOut = "expected valid integer number after asterisk";
return 0;
}
return ulong.Parse(t.StringContents.Substring(1));
}
public ParseException(string message, Token token)
: base(Util.AddTokenText("FBX-Parsre",message,token))
{
}
public DomException(string message, Token token)
: base(message)
{
throw (new Exception(Util.AddTokenText("FBX-DOM", message, token)));
}
