public void ReadKeyword(string keyword)
{
VrmlToken token = ReadNextToken();
if (token.Type != VrmlTokenType.Word || token.Text != keyword)
{
throw new InvalidVrmlSyntaxException(keyword + " expected");
}
}
public VrmlToken ReadNextToken()
{
VrmlToken token = null;
if (m_queue.Count > 0)
{
token = m_queue.Dequeue();
}
else
{
token = m_tokenizer.ReadNextToken();
}
return(token);
}
public void Visit(SFNode field)
{
VrmlToken token = m_context.PeekNextToken();
switch (token.Text)
{
case "NULL":
field.Node = null;
break;
default:
m_context.PushNodeContainer(field);
m_nodeStatementParser(m_context);
m_context.PopNodeContainer();
break;
}
}
protected virtual void ParseMField(Action <ParserContext> itemParser)
{
VrmlToken next = m_context.PeekNextToken();
if (next.Type == VrmlTokenType.OpenBracket)
{
next = m_context.ReadNextToken();
while (true)
{
next = m_context.PeekNextToken();
if (next.Type == VrmlTokenType.CloseBracket)
{
break;
}
itemParser(m_context);
}
next = m_context.ReadNextToken();
}
else
{
itemParser(m_context);
}
}
protected virtual void ParseScriptBodyElement(ParserContext context)
{
var token = context.PeekNextToken();
VrmlToken tokenIs = null;
string fieldType;
switch (token.Text)
{
case "eventIn":
tokenIs = context.PeekNextToken(3);
if (tokenIs.Text == "IS")
{
token = context.ReadNextToken();
fieldType = ParseFieldType(context);
string eventInId1 = ParseEventInId(context);
tokenIs = context.ReadNextToken();
string eventInId2 = ParseEventInId(context);
}
else
{
ParseRestrictedInterfaceDeclaration(context);
}
break;
case "eventOut":
tokenIs = context.PeekNextToken(3);
if (tokenIs.Text == "IS")
{
token = context.ReadNextToken();
fieldType = ParseFieldType(context);
string eventOutId1 = ParseEventOutId(context);
tokenIs = context.ReadNextToken();
string eventOutId2 = ParseEventOutId(context);
}
else
{
ParseRestrictedInterfaceDeclaration(context);
}
break;
case "field":
tokenIs = context.PeekNextToken(3);
if (tokenIs.Text == "IS")
{
token = context.ReadNextToken();
fieldType = ParseFieldType(context);
string fieldId1 = ParseFieldId(context);
tokenIs = context.ReadNextToken();
string fieldId2 = ParseFieldId(context);
}
else
{
ParseRestrictedInterfaceDeclaration(context);
}
break;
default:
if (token.Type == VrmlTokenType.Word)
{
ParseNodeBodyElement(context);
}
else
{
throw new Exception("Unexpected context");
}
break;
}
}
