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//
// Instruction.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// (C) 2005 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
namespace Mono.Cecil.Cil {
public sealed class Instruction : ICodeVisitable {
int m_offset;
OpCode m_opCode;
object m_operand;
Instruction m_previous;
Instruction m_next;
SequencePoint m_sequencePoint;
public int Offset {
get { return m_offset; }
set { m_offset = value; }
}
public OpCode OpCode {
get { return m_opCode; }
set { m_opCode = value; }
}
public object Operand {
get { return m_operand; }
set { m_operand = value; }
}
public Instruction Previous {
get { return m_previous; }
set { m_previous = value; }
}
public Instruction Next {
get { return m_next; }
set { m_next = value; }
}
public SequencePoint SequencePoint {
get { return m_sequencePoint; }
set { m_sequencePoint = value; }
}
internal Instruction (int offset, OpCode opCode, object operand) : this (offset, opCode)
{
m_operand = operand;
}
internal Instruction (int offset, OpCode opCode)
{
m_offset = offset;
m_opCode = opCode;
}
internal Instruction (OpCode opCode, object operand) : this (0, opCode, operand)
{
}
internal Instruction (OpCode opCode) : this (0, opCode)
{
}
public int GetSize ()
{
int size = m_opCode.Size;
switch (m_opCode.OperandType) {
case OperandType.InlineSwitch:
size += (1 + ((Instruction []) m_operand).Length) * 4;
break;
case OperandType.InlineI8:
case OperandType.InlineR:
size += 8;
break;
case OperandType.InlineBrTarget:
case OperandType.InlineField:
case OperandType.InlineI:
case OperandType.InlineMethod:
case OperandType.InlineString:
case OperandType.InlineTok:
case OperandType.InlineType:
case OperandType.ShortInlineR:
size += 4;
break;
case OperandType.InlineParam:
case OperandType.InlineVar:
size += 2;
break;
case OperandType.ShortInlineBrTarget:
case OperandType.ShortInlineI:
case OperandType.ShortInlineParam:
case OperandType.ShortInlineVar:
size += 1;
break;
}
return size;
}
public void Accept (ICodeVisitor visitor)
{
visitor.VisitInstruction (this);
}
}
}
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