Method ParseOptionalScope

sdk/angelscript/source/as_parser.cpp:255–327

BNF:5: SCOPE ::= '::'? (IDENTIFIER '::')* (IDENTIFIER TEMPLTYPELIST? '::')?

// BNF:5: SCOPE         ::= '::'? (IDENTIFIER '::')* (IDENTIFIER TEMPLTYPELIST? '::')?
void asCParser::ParseOptionalScope(asCScriptNode *node)
{
	asCScriptNode *scope = CreateNode(snScope);

	sToken t1, t2;
	GetToken(&t1);
	GetToken(&t2);
	if( t1.type == ttScope )
	{
		RewindTo(&t1);
		scope->AddChildLast(ParseToken(ttScope));
		GetToken(&t1);
		GetToken(&t2);
	}
	while( t1.type == ttIdentifier && t2.type == ttScope )
	{
		RewindTo(&t1);
		scope->AddChildLast(ParseIdentifier());
		scope->AddChildLast(ParseToken(ttScope));
		GetToken(&t1);
		GetToken(&t2);
	}

	// The innermost scope may be a template type
	if( t1.type == ttIdentifier && t2.type == ttLessThan )
	{
		tempString.Assign(&script->code[t1.pos], t1.length);
		if (engine->IsTemplateType(tempString.AddressOf()))
		{
			RewindTo(&t1);
			asCScriptNode *restore = scope->lastChild;
			scope->AddChildLast(ParseIdentifier());
			if (ParseTemplTypeList(scope, false))
			{
				GetToken(&t2);
				if (t2.type == ttScope)
				{
					// Template type is part of the scope
					// Nothing more needs to be done
					node->AddChildLast(scope);
					return;
				}
				else
				{
					// The template type is not part of the scope
					// Rewind to the template type and end the scope
					RewindTo(&t1);

					// Restore the previously parsed node
					while (scope->lastChild != restore)
					{
						asCScriptNode *last = scope->lastChild;
						last->DisconnectParent();
						last->Destroy(engine);
					}
					if( scope->lastChild )
						node->AddChildLast(scope);
					else