Exemplo n.º 1
0
        protected override SequenceConvertInfo Convert(
            ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo, ParameterExpression param)
        {
            var predicate = (LambdaExpression)methodCall.Arguments[1].Unwrap();
            var info      = builder.ConvertSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]), predicate.Parameters[0]);

            if (info != null)
            {
                info.Expression = methodCall.Transform(ex => ConvertMethod(methodCall, 0, info, predicate.Parameters[0], ex));

                if (param != null)
                {
                    if (param.Type != info.Parameter.Type)
                        param = Expression.Parameter(info.Parameter.Type, param.Name);

                    if (info.ExpressionsToReplace != null)
                        foreach (var path in info.ExpressionsToReplace)
                        {
                            path.Path = path.Path.Transform(e => e == info.Parameter ? param : e);
                            path.Expr = path.Expr.Transform(e => e == info.Parameter ? param : e);
                        }
                }

                info.Parameter = param;

                return info;
            }

            return null;
        }