MegaBites-AI/Windows-powershell

1/* ****************************************************************************2 *3 * Copyright (c) Microsoft Corporation.4 *5 * This source code is subject to terms and conditions of the Apache License, Version 2.0. A6 * copy of the license can be found in the License.html file at the root of this distribution. If7 * you cannot locate the Apache License, Version 2.0, please send an email to8 * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound9 * by the terms of the Apache License, Version 2.0.10 *11 * You must not remove this notice, or any other, from this software.12 *13 *14 * ***************************************************************************/15 16using System.Diagnostics;17 18namespace System.Management.Automation.Interpreter19{20    internal abstract class SubInstruction : Instruction21    {22        private static Instruction s_int16, s_int32, s_int64, s_UInt16, s_UInt32, s_UInt64, s_single, s_double;23 24        public override int ConsumedStack { get { return 2; } }25 26        public override int ProducedStack { get { return 1; } }27 28        private SubInstruction()29        {30        }31 32        internal sealed class SubInt32 : SubInstruction33        {34            public override int Run(InterpretedFrame frame)35            {36                object l = frame.Data[frame.StackIndex - 2];37                object r = frame.Data[frame.StackIndex - 1];38                frame.Data[frame.StackIndex - 2] = ScriptingRuntimeHelpers.Int32ToObject(unchecked((Int32)l - (Int32)r));39                frame.StackIndex--;40                return +1;41            }42        }43 44        internal sealed class SubInt16 : SubInstruction45        {46            public override int Run(InterpretedFrame frame)47            {48                object l = frame.Data[frame.StackIndex - 2];49                object r = frame.Data[frame.StackIndex - 1];50                frame.Data[frame.StackIndex - 2] = (Int16)unchecked((Int16)l - (Int16)r);51                frame.StackIndex--;52                return +1;53            }54        }55 56        internal sealed class SubInt64 : SubInstruction57        {58            public override int Run(InterpretedFrame frame)59            {60                object l = frame.Data[frame.StackIndex - 2];61                object r = frame.Data[frame.StackIndex - 1];62                frame.Data[frame.StackIndex - 2] = (Int64)unchecked((Int64)l - (Int64)r);63                frame.StackIndex--;64                return +1;65            }66        }67 68        internal sealed class SubUInt16 : SubInstruction69        {70            public override int Run(InterpretedFrame frame)71            {72                object l = frame.Data[frame.StackIndex - 2];73                object r = frame.Data[frame.StackIndex - 1];74                frame.Data[frame.StackIndex - 2] = (UInt16)unchecked((UInt16)l - (UInt16)r);75                frame.StackIndex--;76                return +1;77            }78        }79 80        internal sealed class SubUInt32 : SubInstruction81        {82            public override int Run(InterpretedFrame frame)83            {84                object l = frame.Data[frame.StackIndex - 2];85                object r = frame.Data[frame.StackIndex - 1];86                frame.Data[frame.StackIndex - 2] = (UInt32)unchecked((UInt32)l - (UInt32)r);87                frame.StackIndex--;88                return +1;89            }90        }91 92        internal sealed class SubUInt64 : SubInstruction93        {94            public override int Run(InterpretedFrame frame)95            {96                object l = frame.Data[frame.StackIndex - 2];97                object r = frame.Data[frame.StackIndex - 1];98                frame.Data[frame.StackIndex - 2] = (UInt64)unchecked((Int16)l - (Int16)r);99                frame.StackIndex--;100                return +1;101            }102        }103 104        internal sealed class SubSingle : SubInstruction105        {106            public override int Run(InterpretedFrame frame)107            {108                object l = frame.Data[frame.StackIndex - 2];109                object r = frame.Data[frame.StackIndex - 1];110                frame.Data[frame.StackIndex - 2] = (Single)((Single)l - (Single)r);111                frame.StackIndex--;112                return +1;113            }114        }115 116        internal sealed class SubDouble : SubInstruction117        {118            public override int Run(InterpretedFrame frame)119            {120                object l = frame.Data[frame.StackIndex - 2];121                object r = frame.Data[frame.StackIndex - 1];122                frame.Data[frame.StackIndex - 2] = (double)l - (double)r;123                frame.StackIndex--;124                return +1;125            }126        }127 128        public static Instruction Create(Type type)129        {130            Debug.Assert(!type.IsEnum);131            switch (type.GetTypeCode())132            {133                case TypeCode.Int16: return s_int16 ??= new SubInt16();134                case TypeCode.Int32: return s_int32 ??= new SubInt32();135                case TypeCode.Int64: return s_int64 ??= new SubInt64();136                case TypeCode.UInt16: return s_UInt16 ??= new SubUInt16();137                case TypeCode.UInt32: return s_UInt32 ??= new SubUInt32();138                case TypeCode.UInt64: return s_UInt64 ??= new SubUInt64();139                case TypeCode.Single: return s_single ??= new SubSingle();140                case TypeCode.Double: return s_double ??= new SubDouble();141 142                default:143                    throw Assert.Unreachable;144            }145        }146 147        public override string ToString()148        {149            return "Sub()";150        }151    }152 153    internal abstract class SubOvfInstruction : Instruction154    {155        private static Instruction s_int16, s_int32, s_int64, s_UInt16, s_UInt32, s_UInt64, s_single, s_double;156 157        public override int ConsumedStack { get { return 2; } }158 159        public override int ProducedStack { get { return 1; } }160 161        private SubOvfInstruction()162        {163        }164 165        internal sealed class SubOvfInt32 : SubOvfInstruction166        {167            public override int Run(InterpretedFrame frame)168            {169                object l = frame.Data[frame.StackIndex - 2];170                object r = frame.Data[frame.StackIndex - 1];171                frame.Data[frame.StackIndex - 2] = ScriptingRuntimeHelpers.Int32ToObject(checked((Int32)l - (Int32)r));172                frame.StackIndex--;173                return +1;174            }175        }176 177        internal sealed class SubOvfInt16 : SubOvfInstruction178        {179            public override int Run(InterpretedFrame frame)180            {181                object l = frame.Data[frame.StackIndex - 2];182                object r = frame.Data[frame.StackIndex - 1];183                frame.Data[frame.StackIndex - 2] = (Int16)checked((Int16)l - (Int16)r);184                frame.StackIndex--;185                return +1;186            }187        }188 189        internal sealed class SubOvfInt64 : SubOvfInstruction190        {191            public override int Run(InterpretedFrame frame)192            {193                object l = frame.Data[frame.StackIndex - 2];194                object r = frame.Data[frame.StackIndex - 1];195                frame.Data[frame.StackIndex - 2] = (Int64)checked((Int64)l - (Int64)r);196                frame.StackIndex--;197                return +1;198            }199        }200 201        internal sealed class SubOvfUInt16 : SubOvfInstruction202        {203            public override int Run(InterpretedFrame frame)204            {205                object l = frame.Data[frame.StackIndex - 2];206                object r = frame.Data[frame.StackIndex - 1];207                frame.Data[frame.StackIndex - 2] = (UInt16)checked((UInt16)l - (UInt16)r);208                frame.StackIndex--;209                return +1;210            }211        }212 213        internal sealed class SubOvfUInt32 : SubOvfInstruction214        {215            public override int Run(InterpretedFrame frame)216            {217                object l = frame.Data[frame.StackIndex - 2];218                object r = frame.Data[frame.StackIndex - 1];219                frame.Data[frame.StackIndex - 2] = (UInt32)checked((UInt32)l - (UInt32)r);220                frame.StackIndex--;221                return +1;222            }223        }224 225        internal sealed class SubOvfUInt64 : SubOvfInstruction226        {227            public override int Run(InterpretedFrame frame)228            {229                object l = frame.Data[frame.StackIndex - 2];230                object r = frame.Data[frame.StackIndex - 1];231                frame.Data[frame.StackIndex - 2] = (UInt64)checked((Int16)l - (Int16)r);232                frame.StackIndex--;233                return +1;234            }235        }236 237        internal sealed class SubOvfSingle : SubOvfInstruction238        {239            public override int Run(InterpretedFrame frame)240            {241                object l = frame.Data[frame.StackIndex - 2];242                object r = frame.Data[frame.StackIndex - 1];243                frame.Data[frame.StackIndex - 2] = (Single)((Single)l - (Single)r);244                frame.StackIndex--;245                return +1;246            }247        }248 249        internal sealed class SubOvfDouble : SubOvfInstruction250        {251            public override int Run(InterpretedFrame frame)252            {253                object l = frame.Data[frame.StackIndex - 2];254                object r = frame.Data[frame.StackIndex - 1];255                frame.Data[frame.StackIndex - 2] = (double)l - (double)r;256                frame.StackIndex--;257                return +1;258            }259        }260 261        public static Instruction Create(Type type)262        {263            Debug.Assert(!type.IsEnum);264            switch (type.GetTypeCode())265            {266                case TypeCode.Int16: return s_int16 ??= new SubOvfInt16();267                case TypeCode.Int32: return s_int32 ??= new SubOvfInt32();268                case TypeCode.Int64: return s_int64 ??= new SubOvfInt64();269                case TypeCode.UInt16: return s_UInt16 ??= new SubOvfUInt16();270                case TypeCode.UInt32: return s_UInt32 ??= new SubOvfUInt32();271                case TypeCode.UInt64: return s_UInt64 ??= new SubOvfUInt64();272                case TypeCode.Single: return s_single ??= new SubOvfSingle();273                case TypeCode.Double: return s_double ??= new SubOvfDouble();274 275                default:276                    throw Assert.Unreachable;277            }278        }279 280        public override string ToString()281        {282            return "SubOvf()";283        }284    }285}286