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*
* 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 LessThanInstruction : Instruction
{
private static Instruction s_SByte, s_int16, s_char, s_int32, s_int64, s_byte, 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 LessThanInstruction()
{
}
internal sealed class LessThanSByte : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
sbyte right = (sbyte)frame.Pop();
frame.Push(((sbyte)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanInt16 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
Int16 right = (Int16)frame.Pop();
frame.Push(((Int16)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanChar : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
char right = (char)frame.Pop();
frame.Push(((char)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanInt32 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
Int32 right = (Int32)frame.Pop();
frame.Push(((Int32)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanInt64 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
Int64 right = (Int64)frame.Pop();
frame.Push(((Int64)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanByte : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
byte right = (byte)frame.Pop();
frame.Push(((byte)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanUInt16 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
UInt16 right = (UInt16)frame.Pop();
frame.Push(((UInt16)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanUInt32 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
UInt32 right = (UInt32)frame.Pop();
frame.Push(((UInt32)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanUInt64 : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
UInt64 right = (UInt64)frame.Pop();
frame.Push(((UInt64)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanSingle : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
Single right = (Single)frame.Pop();
frame.Push(((Single)frame.Pop()) < right);
return +1;
}
}
internal sealed class LessThanDouble : LessThanInstruction
{
public override int Run(InterpretedFrame frame)
{
double right = (double)frame.Pop();
frame.Push(((double)frame.Pop()) < right);
return +1;
}
}
public static Instruction Create(Type type)
{
Debug.Assert(!type.IsEnum);
switch (type.GetTypeCode())
{
case TypeCode.SByte: return s_SByte ??= new LessThanSByte();
case TypeCode.Byte: return s_byte ??= new LessThanByte();
case TypeCode.Char: return s_char ??= new LessThanChar();
case TypeCode.Int16: return s_int16 ??= new LessThanInt16();
case TypeCode.Int32: return s_int32 ??= new LessThanInt32();
case TypeCode.Int64: return s_int64 ??= new LessThanInt64();
case TypeCode.UInt16: return s_UInt16 ??= new LessThanUInt16();
case TypeCode.UInt32: return s_UInt32 ??= new LessThanUInt32();
case TypeCode.UInt64: return s_UInt64 ??= new LessThanUInt64();
case TypeCode.Single: return s_single ??= new LessThanSingle();
case TypeCode.Double: return s_double ??= new LessThanDouble();
default:
throw Assert.Unreachable;
}
}
public override string ToString()
{
return "LessThan()";
}
}
}
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