ES3Parser.conditionalExpression C# (CSharp) Method

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

        object root_0 = null;

        IToken QUE75 = null;
        IToken COLON76 = null;
        ES3Parser.logicalORExpression_return expr1 = default(ES3Parser.logicalORExpression_return);

        ES3Parser.assignmentExpression_return expr2 = default(ES3Parser.assignmentExpression_return);

        ES3Parser.assignmentExpression_return expr3 = default(ES3Parser.assignmentExpression_return);


        object QUE75_tree=null;
        object COLON76_tree=null;

        try 
    	{
            // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1277:2: (expr1= logicalORExpression ( QUE expr2= assignmentExpression COLON expr3= assignmentExpression )? )
            // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1277:4: expr1= logicalORExpression ( QUE expr2= assignmentExpression COLON expr3= assignmentExpression )?
            {
            	root_0 = (object)adaptor.GetNilNode();

            	PushFollow(FOLLOW_logicalORExpression_in_conditionalExpression4822);
            	expr1 = logicalORExpression();
            	state.followingStackPointer--;

            	adaptor.AddChild(root_0, expr1.Tree);
            	 retval.value =  expr1.value; 
            	// C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1277:56: ( QUE expr2= assignmentExpression COLON expr3= assignmentExpression )?
            	int alt50 = 2;
            	int LA50_0 = input.LA(1);

            	if ( (LA50_0 == QUE) )
            	{
            	    alt50 = 1;
            	}
            	switch (alt50) 
            	{
            	    case 1 :
            	        // C:\\Users\\s.ros\\Projets\\Jint\\Jint\\ES3.g:1277:58: QUE expr2= assignmentExpression COLON expr3= assignmentExpression
            	        {
            	        	QUE75=(IToken)Match(input,QUE,FOLLOW_QUE_in_conditionalExpression4828); 
            	        		QUE75_tree = (object)adaptor.Create(QUE75);
            	        		root_0 = (object)adaptor.BecomeRoot(QUE75_tree, root_0);

            	        	PushFollow(FOLLOW_assignmentExpression_in_conditionalExpression4833);
            	        	expr2 = assignmentExpression();
            	        	state.followingStackPointer--;

            	        	adaptor.AddChild(root_0, expr2.Tree);
            	        	COLON76=(IToken)Match(input,COLON,FOLLOW_COLON_in_conditionalExpression4835); 
            	        	PushFollow(FOLLOW_assignmentExpression_in_conditionalExpression4840);
            	        	expr3 = assignmentExpression();
            	        	state.followingStackPointer--;

            	        	adaptor.AddChild(root_0, expr3.Tree);
            	        	 retval.value =  new TernaryExpression(expr1.value, expr2.value, expr3.value); 

            	        }
            	        break;

            	}


            }

            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 "conditionalExpression"