ES3Parser.generics C# (CSharp) Method

    public ES3Parser.generics_return generics() // throws RecognitionException [1]
    {   
        ES3Parser.generics_return retval = new ES3Parser.generics_return();
        retval.Start = input.LT(1);

        object root_0 = null;

        IToken LBRACE25 = null;
        IToken COMMA26 = null;
        IToken RBRACE27 = null;
        ES3Parser.assignmentExpression_return first = default(ES3Parser.assignmentExpression_return);

        ES3Parser.assignmentExpression_return follow = default(ES3Parser.assignmentExpression_return);


        object LBRACE25_tree=null;
        object COMMA26_tree=null;
        object RBRACE27_tree=null;


        	retval.value =  new List<Expression>();

        try 
    	{
            // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:2: ( LBRACE (first= assignmentExpression ( COMMA follow= assignmentExpression )* )? RBRACE )
            // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:4: LBRACE (first= assignmentExpression ( COMMA follow= assignmentExpression )* )? RBRACE
            {
            	root_0 = (object)adaptor.GetNilNode();

            	LBRACE25=(IToken)Match(input,LBRACE,FOLLOW_LBRACE_in_generics3628); 
            		LBRACE25_tree = (object)adaptor.Create(LBRACE25);
            		adaptor.AddChild(root_0, LBRACE25_tree);

            	// C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:11: (first= assignmentExpression ( COMMA follow= assignmentExpression )* )?
            	int alt19 = 2;
            	int LA19_0 = input.LA(1);

            	if ( ((LA19_0 >= NULL && LA19_0 <= FALSE) || LA19_0 == DELETE || LA19_0 == FUNCTION || LA19_0 == NEW || LA19_0 == THIS || LA19_0 == TYPEOF || LA19_0 == VOID || LA19_0 == LBRACE || LA19_0 == LPAREN || LA19_0 == LBRACK || (LA19_0 >= ADD && LA19_0 <= SUB) || (LA19_0 >= INC && LA19_0 <= DEC) || (LA19_0 >= NOT && LA19_0 <= INV) || (LA19_0 >= Identifier && LA19_0 <= StringLiteral) || LA19_0 == RegularExpressionLiteral || (LA19_0 >= DecimalLiteral && LA19_0 <= HexIntegerLiteral)) )
            	{
            	    alt19 = 1;
            	}
            	switch (alt19) 
            	{
            	    case 1 :
            	        // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:13: first= assignmentExpression ( COMMA follow= assignmentExpression )*
            	        {
            	        	PushFollow(FOLLOW_assignmentExpression_in_generics3634);
            	        	first = assignmentExpression();
            	        	state.followingStackPointer--;

            	        	adaptor.AddChild(root_0, first.Tree);
            	        	 retval.value.Add(first.value); 
            	        	// C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:69: ( COMMA follow= assignmentExpression )*
            	        	do 
            	        	{
            	        	    int alt18 = 2;
            	        	    int LA18_0 = input.LA(1);

            	        	    if ( (LA18_0 == COMMA) )
            	        	    {
            	        	        alt18 = 1;
            	        	    }


            	        	    switch (alt18) 
            	        		{
            	        			case 1 :
            	        			    // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1055:71: COMMA follow= assignmentExpression
            	        			    {
            	        			    	COMMA26=(IToken)Match(input,COMMA,FOLLOW_COMMA_in_generics3640); 
            	        			    		COMMA26_tree = (object)adaptor.Create(COMMA26);
            	        			    		adaptor.AddChild(root_0, COMMA26_tree);

            	        			    	PushFollow(FOLLOW_assignmentExpression_in_generics3644);
            	        			    	follow = assignmentExpression();
            	        			    	state.followingStackPointer--;

            	        			    	adaptor.AddChild(root_0, follow.Tree);
            	        			    	 retval.value.Add(follow.value); 

            	        			    }
            	        			    break;

            	        			default:
            	        			    goto loop18;
            	        	    }
            	        	} while (true);

            	        	loop18:
            	        		;	// Stops C# compiler whining that label 'loop18' has no statements


            	        }
            	        break;

            	}

            	RBRACE27=(IToken)Match(input,RBRACE,FOLLOW_RBRACE_in_generics3653); 
            		RBRACE27_tree = (object)adaptor.Create(RBRACE27);
            		adaptor.AddChild(root_0, RBRACE27_tree);


            }

            retval.Stop = input.LT(-1);

            	retval.Tree = (object)adaptor.RulePostProcessing(root_0);
            	adaptor.SetTokenBoundaries(retval.Tree, (IToken) retval.Start, (IToken) retval.Stop);
        }
        catch (RecognitionException re) 
    	{
            ReportError(re);
            Recover(input,re);
    	// Conversion of the second argument necessary, but harmless
    	retval.Tree = (object)adaptor.ErrorNode(input, (IToken) retval.Start, input.LT(-1), re);

        }
        finally 
    	{
        }
        return retval;
    }
    // $ANTLR end "generics"