internal object GetNextNumberToken()
{
object token = ConsumeNextToken(false, false, false);
VRMLTokenNumber numberToken = token as VRMLTokenNumber;
if (numberToken == null)
{
VRMLTokenIdKeywordOrFieldType idToken = token as VRMLTokenIdKeywordOrFieldType;
if (idToken != null)
{
string id = idToken.id.ToLower();
if (id == "infinity")
{
return(double.PositiveInfinity);
}
if (id == "nan")
{
return(double.NaN);
}
}
ErrorParsingToken("number", token);
}
return(numberToken.number);
}
internal X3DFieldBase ParseUntypedFieldValue()
{
object token = PeekNextToken();
#region sfboolValue or sfnodeValue (NULL or Node(s))
VRMLTokenIdKeywordOrFieldType idToken = token as VRMLTokenIdKeywordOrFieldType;
if (idToken != null)
{
switch (idToken.id)
{
case "TRUE": GetNextIDToken(); return(new SFBool(true));
case "FALSE": GetNextIDToken(); return(new SFBool(false));
case "NULL": GetNextIDToken(); return(null);
default: return(ParseNodeStatement());
}
}
#endregion
#region mf*Values ([-Token)
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null)
{
if (tsToken.symbol != '[')
{
ErrorParsingToken("[", tsToken.symbol.ToString(), "unknown type value");
}
return(ParseUntypedFieldValueArray());
}
#endregion
#region sfstringValue
VRMLTokenString strToken = token as VRMLTokenString;
if (strToken != null)
{
return(new SFString(GetNextStringToken()));
}
#endregion
#region sfcolorValue, sffloatValue, sfimageValue, sfint32Value, sfrotationValue, sftimeValue, sfvec2fValue or sfvec3fValue
VRMLTokenNumber numberToken = token as VRMLTokenNumber;
if (numberToken != null)
{
return(new SFNumbers(ParseUntypedFieldValueNumbers()));
}
#endregion
return(null);
}
List <object> ParseUntypedFieldValueNumbers()
{
List <object> ret = new List <object>();
for (; ;)
{
object token = PeekNextToken();
VRMLTokenNumber n = token as VRMLTokenNumber;
if (n == null)
{
return(ret);
}
ret.Add(n.number);
ConsumeNextToken(false, false, false);
}
}
X3DFieldBase ParseUntypedFieldValueArray()
{
char ts = GetNextTerminalSymbolToken(); // [
object token = PeekNextToken();
X3DFieldBase ret = null;
VRMLTokenIdKeywordOrFieldType idToken = token as VRMLTokenIdKeywordOrFieldType;
if (idToken != null)
{
ret = new MFNode(ParseUntypedFieldValueNodeArray());
}
VRMLTokenString strToken = token as VRMLTokenString;
if (strToken != null)
{
ret = new MFString(ParseUntypedFieldValueStringArray());
}
VRMLTokenNumber numberToken = token as VRMLTokenNumber;
if (numberToken != null)
{
ret = new MFNumbers(ParseUntypedFieldValueNumbers());
}
ts = GetNextTerminalSymbolToken();
if (ts != ']')
{
ErrorParsingToken("]", ts.ToString(), "unknown type value (array)");
}
if (ret == null)
{
ret = new MFEmpty();
}
return(ret);
}
