protected virtual void ParseNode(ParserContext context)
{
var token = context.PeekNextToken();
if (token.Type == VRML97TokenType.EOF)
{
return;
}
switch (token.Text)
{
case "Script":
ParseScriptNode(context);
break;
default:
var nodeTypeId = ParseNodeTypeId(context);
var node = context.CreateNode(nodeTypeId, context.NodeName);
context.NodeName = null;
context.PushFieldContainer(node);
if (context.ReadNextToken().Type != VRML97TokenType.OpenBrace)
{
throw new InvalidVRMLSyntaxException("Open brace expected");
}
ParseNodeBody(context);
if (context.ReadNextToken().Type != VRML97TokenType.CloseBrace)
{
throw new InvalidVRMLSyntaxException();
}
context.PopFieldContainer();
context.AcceptChild(node);
break;
}
}
protected virtual void ParseNodeStatement(ParserContext context)
{
var token = context.PeekNextToken();
switch (token.Text)
{
case "DEF":
ParseDefNodeStatement(context);
break;
case "USE":
var useStatement = UseStatement.Parse(context);
var node = context.FindNode(useStatement.NodeName);
context.AcceptChild(node);
break;
default:
ParseNode(context);
break;
}
}
protected virtual void ParseNodeStatement(ParserContext context) {
var token = context.PeekNextToken();
switch (token.Text) {
case "DEF":
ParseDefNodeStatement(context);
break;
case "USE":
var useStatement = UseStatement.Parse(context);
var node = context.FindNode(useStatement.NodeName);
context.AcceptChild(node);
break;
default:
ParseNode(context);
break;
}
}
protected virtual void ParseNode(ParserContext context) {
var token = context.PeekNextToken();
if (token.Type == VRML97TokenType.EOF) return;
switch (token.Text) {
case "Script":
ParseScriptNode(context);
break;
default:
var nodeTypeId = ParseNodeTypeId(context);
var node = context.CreateNode(nodeTypeId, context.NodeName);
context.NodeName = null;
context.PushFieldContainer(node);
if (context.ReadNextToken().Type != VRML97TokenType.OpenBrace) {
throw new InvalidVRMLSyntaxException("Open brace expected");
}
ParseNodeBody(context);
if (context.ReadNextToken().Type != VRML97TokenType.CloseBrace) {
throw new InvalidVRMLSyntaxException();
}
context.PopFieldContainer();
context.AcceptChild(node);
break;
}
}