Exemple #1
0
        public static void PrepareRawSqlArguments(Expression formatArg, Expression?parametersArg, out string format, out IReadOnlyList <Expression> arguments)
        {
            // Consider that FormattableString is used
            if (formatArg.NodeType == ExpressionType.Call)
            {
                var mc = (MethodCallExpression)formatArg;

                if (mc.Arguments[1].NodeType != ExpressionType.NewArrayInit)
                {
                    format = (string)mc.Arguments[0].EvaluateExpression() !;
                    var args = new Expression[mc.Arguments.Count - 1];

                    for (var i = 0; i < args.Length; i++)
                    {
                        args[i] = mc.Arguments[i + 1];
                    }

                    arguments = args;
                }
                else
                {
                    format    = (string)mc.Arguments[0].EvaluateExpression() !;
                    arguments = ((NewArrayExpression)mc.Arguments[1]).Expressions;
                }
            }
            else
            {
                var evaluatedSql = formatArg.EvaluateExpression() !;
#if !NET45
                if (evaluatedSql is FormattableString formattable)
                {
                    format = formattable.Format;

                    var array = formattable.GetArguments();
                    var args  = new Expression[array.Length];

                    for (var i = 0; i < array.Length; i++)
                    {
                        var type = array[i]?.GetType() ?? typeof(object);

                        if (typeof(ISqlExpression).IsAssignableFrom(type))
                        {
                            args[i] = Expression.Constant(array[i]);
                            continue;
                        }

                        Expression expr = Expression.Call(formatArg, ReflectionHelper.Functions.FormattableString.GetArguments, ExpressionInstances.Int32Array(i));

                        if (type != typeof(object))
                        {
                            expr = Expression.Convert(expr, type);
                        }

                        args[i] = expr;
                    }

                    arguments = args;
                }
                else
#endif
                {
                    var rawSqlString = (RawSqlString)evaluatedSql;

                    format = rawSqlString.Format;
                    var arrayExpr = parametersArg !;

                    if (arrayExpr.NodeType == ExpressionType.NewArrayInit)
                    {
                        arguments = ((NewArrayExpression)arrayExpr).Expressions;
                    }
                    else
                    {
                        var array = (object[])arrayExpr.EvaluateExpression() !;
                        var args  = new Expression[array.Length];
                        for (var i = 0; i < array.Length; i++)
                        {
                            var type = array[i]?.GetType() ?? typeof(object);

                            if (typeof(ISqlExpression).IsAssignableFrom(type))
                            {
                                args[i] = Expression.Constant(array[i]);
                                continue;
                            }

                            Expression expr = Expression.ArrayIndex(arrayExpr, ExpressionInstances.Int32(i));
                            if (type != typeof(object))
                            {
                                expr = Expression.Convert(expr, type);
                            }

                            args[i] = expr;
                        }

                        arguments = args;
                    }
                }
            }
        }
        public static void PrepareRawSqlArguments(Expression formatArg, Expression?parametersArg, out string format, out IEnumerable <Expression> arguments)
        {
            // Consider that FormattableString is used
            if (formatArg.NodeType == ExpressionType.Call)
            {
                var mc = (MethodCallExpression)formatArg;

                if (mc.Arguments[1].NodeType != ExpressionType.NewArrayInit)
                {
                    format    = (string)mc.Arguments[0].EvaluateExpression() !;
                    arguments = mc.Arguments.Skip(1).ToArray();
                }
                else
                {
                    format    = (string)mc.Arguments[0].EvaluateExpression() !;
                    arguments = ((NewArrayExpression)mc.Arguments[1]).Expressions;
                }
            }
            else
            {
                var evaluatedSql = formatArg.EvaluateExpression() !;
#if !NET45
                if (evaluatedSql is FormattableString formattable)
                {
                    format = formattable.Format;

                    arguments = formattable.GetArguments().Select((a, i) =>
                    {
                        var type = a?.GetType() ?? typeof(object);

                        if (typeof(ISqlExpression).IsAssignableFrom(type))
                        {
                            return(Expression.Constant(a));
                        }

                        Expression expr = Expression.Call(formatArg, ReflectionHelper.Functions.FormattableString.GetArguments, ExpressionInstances.Int32Array(i));

                        if (type != typeof(object))
                        {
                            expr = Expression.Convert(expr, type);
                        }

                        return(expr);
                    });
                }
                else
#endif
                {
                    var rawSqlString = (RawSqlString)evaluatedSql;

                    format = rawSqlString.Format;
                    var arrayExpr = parametersArg !;

                    if (arrayExpr.NodeType == ExpressionType.NewArrayInit)
                    {
                        arguments = ((NewArrayExpression)arrayExpr).Expressions;
                    }
                    else
                    {
                        var array = (object[])arrayExpr.EvaluateExpression() !;
                        arguments = array.Select((a, i) =>
                        {
                            var type = a?.GetType() ?? typeof(object);

                            if (typeof(ISqlExpression).IsAssignableFrom(type))
                            {
                                return(Expression.Constant(a));
                            }

                            Expression expr = Expression.ArrayIndex(arrayExpr, ExpressionInstances.Int32(i));
                            if (type != typeof(object))
                            {
                                expr = Expression.Convert(expr, type);
                            }

                            return(expr);
                        });
                    }
                }
            }
        }