Windows-powershell / PowerShell-master /src /System.Management.Automation /engine /interpreter /SubInstruction.cs
| /* **************************************************************************** | |
| * | |
| * Copyright (c) Microsoft Corporation. | |
| * | |
| * This source code is subject to terms and conditions of the Apache License, Version 2.0. A | |
| * copy of the license can be found in the License.html file at the root of this distribution. If | |
| * you cannot locate the Apache License, Version 2.0, please send an email to | |
| * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound | |
| * by the terms of the Apache License, Version 2.0. | |
| * | |
| * You must not remove this notice, or any other, from this software. | |
| * | |
| * | |
| * ***************************************************************************/ | |
| using System.Diagnostics; | |
| namespace System.Management.Automation.Interpreter | |
| { | |
| internal abstract class SubInstruction : Instruction | |
| { | |
| private static Instruction s_int16, s_int32, s_int64, s_UInt16, s_UInt32, s_UInt64, s_single, s_double; | |
| public override int ConsumedStack { get { return 2; } } | |
| public override int ProducedStack { get { return 1; } } | |
| private SubInstruction() | |
| { | |
| } | |
| internal sealed class SubInt32 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = ScriptingRuntimeHelpers.Int32ToObject(unchecked((Int32)l - (Int32)r)); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubInt16 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Int16)unchecked((Int16)l - (Int16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubInt64 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Int64)unchecked((Int64)l - (Int64)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubUInt16 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt16)unchecked((UInt16)l - (UInt16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubUInt32 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt32)unchecked((UInt32)l - (UInt32)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubUInt64 : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt64)unchecked((Int16)l - (Int16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubSingle : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Single)((Single)l - (Single)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubDouble : SubInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (double)l - (double)r; | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| public static Instruction Create(Type type) | |
| { | |
| Debug.Assert(!type.IsEnum); | |
| switch (type.GetTypeCode()) | |
| { | |
| case TypeCode.Int16: return s_int16 ??= new SubInt16(); | |
| case TypeCode.Int32: return s_int32 ??= new SubInt32(); | |
| case TypeCode.Int64: return s_int64 ??= new SubInt64(); | |
| case TypeCode.UInt16: return s_UInt16 ??= new SubUInt16(); | |
| case TypeCode.UInt32: return s_UInt32 ??= new SubUInt32(); | |
| case TypeCode.UInt64: return s_UInt64 ??= new SubUInt64(); | |
| case TypeCode.Single: return s_single ??= new SubSingle(); | |
| case TypeCode.Double: return s_double ??= new SubDouble(); | |
| default: | |
| throw Assert.Unreachable; | |
| } | |
| } | |
| public override string ToString() | |
| { | |
| return "Sub()"; | |
| } | |
| } | |
| internal abstract class SubOvfInstruction : Instruction | |
| { | |
| private static Instruction s_int16, s_int32, s_int64, s_UInt16, s_UInt32, s_UInt64, s_single, s_double; | |
| public override int ConsumedStack { get { return 2; } } | |
| public override int ProducedStack { get { return 1; } } | |
| private SubOvfInstruction() | |
| { | |
| } | |
| internal sealed class SubOvfInt32 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = ScriptingRuntimeHelpers.Int32ToObject(checked((Int32)l - (Int32)r)); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfInt16 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Int16)checked((Int16)l - (Int16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfInt64 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Int64)checked((Int64)l - (Int64)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfUInt16 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt16)checked((UInt16)l - (UInt16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfUInt32 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt32)checked((UInt32)l - (UInt32)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfUInt64 : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (UInt64)checked((Int16)l - (Int16)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfSingle : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (Single)((Single)l - (Single)r); | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| internal sealed class SubOvfDouble : SubOvfInstruction | |
| { | |
| public override int Run(InterpretedFrame frame) | |
| { | |
| object l = frame.Data[frame.StackIndex - 2]; | |
| object r = frame.Data[frame.StackIndex - 1]; | |
| frame.Data[frame.StackIndex - 2] = (double)l - (double)r; | |
| frame.StackIndex--; | |
| return +1; | |
| } | |
| } | |
| public static Instruction Create(Type type) | |
| { | |
| Debug.Assert(!type.IsEnum); | |
| switch (type.GetTypeCode()) | |
| { | |
| case TypeCode.Int16: return s_int16 ??= new SubOvfInt16(); | |
| case TypeCode.Int32: return s_int32 ??= new SubOvfInt32(); | |
| case TypeCode.Int64: return s_int64 ??= new SubOvfInt64(); | |
| case TypeCode.UInt16: return s_UInt16 ??= new SubOvfUInt16(); | |
| case TypeCode.UInt32: return s_UInt32 ??= new SubOvfUInt32(); | |
| case TypeCode.UInt64: return s_UInt64 ??= new SubOvfUInt64(); | |
| case TypeCode.Single: return s_single ??= new SubOvfSingle(); | |
| case TypeCode.Double: return s_double ??= new SubOvfDouble(); | |
| default: | |
| throw Assert.Unreachable; | |
| } | |
| } | |
| public override string ToString() | |
| { | |
| return "SubOvf()"; | |
| } | |
| } | |
| } | |