void ParseStatements(bool isProto)
{
// statement | statement statements | empty
for (; ;)
{
object token = ConsumeNextToken(false, false, true);
if (token == null)
{
return; // done
}
ReturnToken(token);
if (isProto)
{
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == '}')
{
return; // done
}
}
ParseStatement();
}
}
internal List <X3DNode> ParseSFNodeOrMFNodeValue()
{
// nodeStatement | [ ] | [ nodeStatements ]
try
{
object token = PeekNextToken();
List <X3DNode> ret = new List <X3DNode>();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == '[')
{
char ts = GetNextTerminalSymbolToken();
for (; ;)
{
token = PeekNextToken();
tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
ts = GetNextTerminalSymbolToken();
break;
}
X3DNode node = ParseNodeStatement();
if (node != null)
{
ret.Add(node);
}
}
}
else
{
VRMLTokenIdKeywordOrFieldType nullToken = token as VRMLTokenIdKeywordOrFieldType;
if (nullToken != null && nullToken.id == "NULL")
{
GetNextIDToken(); // consume NULL
ErrorParsing(VRMLReaderError.ImproperInitializationOfMFNode);
}
else
{
X3DNode node = ParseNodeStatement();
if (node != null)
{
ret.Add(node);
}
}
}
return(ret);
}
catch (UserCancellationException) { throw; }
catch (Exception ex)
{
ErrorParsingField(VRMLReaderError.MFNodeInvalid, ex);
}
return(null);
}
internal char GetNextColonToken()
{
object token = ConsumeNextToken(false, true, false);
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken == null || tsToken.symbol != ':')
{
ErrorParsingToken(":", token);
}
return(tsToken.symbol);
}
internal char GetNextTerminalSymbolToken()
{
object token = ConsumeNextToken(false, false, false);
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken == null)
{
ErrorParsingToken("terminal symbol", token);
}
return(tsToken.symbol);
}
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 <string> ParseUntypedFieldValueStringArray()
{
List <string> ret = new List <string>();
for (; ;)
{
object token = PeekNextToken();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
return(ret); // done
}
ret.Add(GetNextStringToken());
}
}
internal List <bool> ParseSFBoolOrMFBoolValue()
{
// sfboolValue | [ ] | [ sfboolValues ]
try
{
object token = PeekNextToken();
List <bool> ret = new List <bool>();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == '[')
{
char ts = GetNextTerminalSymbolToken();
for (; ;)
{
token = PeekNextToken();
tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
ts = GetNextTerminalSymbolToken();
break;
}
ret.Add(ParseBoolValue());
}
}
else
{
ret.Add(ParseBoolValue());
}
return(ret);
}
catch (UserCancellationException) { throw; }
catch (Exception ex)
{
ErrorParsingField(VRMLReaderError.MFBoolInvalid, ex);
}
return(null);
}
List <X3DNode> ParseUntypedFieldValueNodeArray()
{
List <X3DNode> ret = new List <X3DNode>();
for (; ;)
{
object token = PeekNextToken();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
return(ret); // done
}
X3DNode node = ParseNodeStatement();
if (node != null)
{
ret.Add(node);
}
}
}
internal List <SFVec3f> ParseGeoCoordinatePointValue()
{
try
{
object token = PeekNextToken();
List <SFVec3f> ret = new List <SFVec3f>();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == '[')
{
char ts = GetNextTerminalSymbolToken();
for (; ;)
{
token = PeekNextToken();
tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
ts = GetNextTerminalSymbolToken();
break;
}
ret.AddRange(ParseSFVec3fStringsValue());
}
}
else
{
ret.AddRange(ParseSFVec3fStringsValue());
}
return(ret);
}
catch (UserCancellationException) { throw; }
catch (Exception ex)
{
ErrorParsingField(VRMLReaderError.MFVec3fInvalid, ex);
}
return(null);
}
List <InterfaceDeclaration> ParseExternInterfaceDeclarations()
{
// externInterfaceDeclaration | externInterfaceDeclaration externInterfaceDeclarations | empty
List <InterfaceDeclaration> ret = new List <InterfaceDeclaration>();
for (; ;)
{
object token = PeekNextToken();
VRMLTokenTerminalSymbol tsToken = token as VRMLTokenTerminalSymbol;
if (tsToken != null && tsToken.symbol == ']')
{
return(ret); // done
}
VRMLTokenIdKeywordOrFieldType idToken = token as VRMLTokenIdKeywordOrFieldType;
if (idToken == null)
{
ErrorParsingToken("interface declaration keyword", "", "EXTRENPROTO statement interface declarations");
}
switch (idToken.id)
{
case "eventIn":
case "inputOnly":
case "eventOut":
case "outputOnly":
case "field":
case "initializeOnly":
case "exposedField":
case "inputOutput": ret.Add(ParseExternInterfaceDeclaration()); break;
default:
ErrorParsingToken("interface declaration keyword", idToken.id, "EXTRENPROTO statement interface declarations");
return(null);
}
}
}
