214 lines
7.6 KiB
C#
214 lines
7.6 KiB
C#
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// dnlib: See LICENSE.txt for more info
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using System.Collections.Generic;
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namespace dnlib.DotNet.Emit {
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/// <summary>
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/// A CIL opcode
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/// </summary>
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public sealed class OpCode {
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/// <summary>
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/// The opcode name
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/// </summary>
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public readonly string Name;
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/// <summary>
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/// The opcode as a <see cref="Code"/> enum
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/// </summary>
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public readonly Code Code;
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/// <summary>
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/// Operand type
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/// </summary>
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public readonly OperandType OperandType;
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/// <summary>
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/// Flow control info
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/// </summary>
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public readonly FlowControl FlowControl;
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/// <summary>
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/// Opcode type
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/// </summary>
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public readonly OpCodeType OpCodeType;
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/// <summary>
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/// Push stack behavior
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/// </summary>
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public readonly StackBehaviour StackBehaviourPush;
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/// <summary>
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/// Pop stack behavior
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/// </summary>
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public readonly StackBehaviour StackBehaviourPop;
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/// <summary>
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/// Gets the value which is compatible with <see cref="System.Reflection.Emit.OpCode.Value"/>
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/// </summary>
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public short Value => (short)Code;
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/// <summary>
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/// Gets the size of the opcode. It's either 1 or 2 bytes.
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/// </summary>
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public int Size => Code < (Code)0x100 || Code == Code.UNKNOWN1 ? 1 : 2;
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/// <summary>
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/// Constructs an experimental opcode.
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/// </summary>
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public OpCode(string name, byte first, byte second, OperandType operandType, FlowControl flowControl, StackBehaviour push, StackBehaviour pop)
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: this(name, (Code)((first << 8) | second), operandType, flowControl, OpCodeType.Experimental, push, pop, true) {
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}
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internal OpCode(string name, Code code, OperandType operandType, FlowControl flowControl, OpCodeType opCodeType, StackBehaviour push, StackBehaviour pop, bool experimental = false) {
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Name = name;
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Code = code;
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OperandType = operandType;
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FlowControl = flowControl;
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OpCodeType = opCodeType;
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StackBehaviourPush = push;
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StackBehaviourPop = pop;
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if (!experimental) {
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if (((ushort)code >> 8) == 0)
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OpCodes.OneByteOpCodes[(byte)code] = this;
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else if (((ushort)code >> 8) == 0xFE)
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OpCodes.TwoByteOpCodes[(byte)code] = this;
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}
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}
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/// <summary>
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/// Creates a new instruction with no operand
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/// </summary>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction() => Instruction.Create(this);
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/// <summary>
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/// Creates a new instruction with a <see cref="byte"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(byte value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with a <see cref="sbyte"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(sbyte value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with an <see cref="int"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(int value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with a <see cref="long"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(long value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with a <see cref="float"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(float value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with a <see cref="double"/> operand
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/// </summary>
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/// <param name="value">The value</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(double value) => Instruction.Create(this, value);
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/// <summary>
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/// Creates a new instruction with a string operand
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/// </summary>
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/// <param name="s">The string</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(string s) => Instruction.Create(this, s);
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/// <summary>
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/// Creates a new instruction with an instruction target operand
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/// </summary>
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/// <param name="target">Target instruction</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(Instruction target) => Instruction.Create(this, target);
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/// <summary>
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/// Creates a new instruction with an instruction target list operand
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/// </summary>
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/// <param name="targets">The targets</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(IList<Instruction> targets) => Instruction.Create(this, targets);
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/// <summary>
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/// Creates a new instruction with a type operand
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/// </summary>
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/// <param name="type">The type</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(ITypeDefOrRef type) => Instruction.Create(this, type);
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/// <summary>
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/// Creates a new instruction with a type operand
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/// </summary>
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/// <param name="type">The type</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(CorLibTypeSig type) => Instruction.Create(this, type.TypeDefOrRef);
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/// <summary>
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/// Creates a new instruction with a method/field operand
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/// </summary>
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/// <param name="mr">The method/field</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(MemberRef mr) => Instruction.Create(this, mr);
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/// <summary>
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/// Creates a new instruction with a field operand
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/// </summary>
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/// <param name="field">The field</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(IField field) => Instruction.Create(this, field);
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/// <summary>
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/// Creates a new instruction with a method operand
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/// </summary>
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/// <param name="method">The method</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(IMethod method) => Instruction.Create(this, method);
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/// <summary>
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/// Creates a new instruction with a token operand
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/// </summary>
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/// <param name="token">The token</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(ITokenOperand token) => Instruction.Create(this, token);
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/// <summary>
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/// Creates a new instruction with a method signature operand
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/// </summary>
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/// <param name="methodSig">The method signature</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(MethodSig methodSig) => Instruction.Create(this, methodSig);
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/// <summary>
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/// Creates a new instruction with a method parameter operand
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/// </summary>
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/// <param name="parameter">The method parameter</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(Parameter parameter) => Instruction.Create(this, parameter);
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/// <summary>
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/// Creates a new instruction with a method local operand
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/// </summary>
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/// <param name="local">The method local</param>
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/// <returns>A new <see cref="Instruction"/> instance</returns>
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public Instruction ToInstruction(Local local) => Instruction.Create(this, local);
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/// <inheritdoc/>
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public override string ToString() => Name;
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}
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}
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