public void Visit(CilInstructionWithNoValue instruction)
{
if (_options.ShowBytes)
{
WriteBytes(string.Empty, instruction);
}
_writer.WriteLine(string.Format("{0}", instruction.opCode));
}
private static IEnumerable<CilInstruction> DecodeMethodBody(BlobReader ilReader, MetadataReader metadataReader, CilTypeProvider provider, CilMethodDefinition methodDefinition)
{
ilReader.Reset();
int intOperand;
ushort shortOperand;
int ilOffset = 0;
CilInstruction instruction = null;
while (ilReader.Offset < ilReader.Length)
{
OpCode opCode;
int expectedSize;
byte _byte = ilReader.ReadByte();
/*If the byte read is 0xfe it means is a two byte instruction,
so since it is going to read the second byte to get the actual
instruction it has to check that the offset is still less than the length.*/
if (_byte == 0xfe && ilReader.Offset < ilReader.Length)
{
opCode = CilDecoderHelpers.Instance.twoByteOpCodes[ilReader.ReadByte()];
expectedSize = 2;
}
else
{
opCode = CilDecoderHelpers.Instance.oneByteOpCodes[_byte];
expectedSize = 1;
}
switch (opCode.OperandType)
{
//The instruction size is the expected size (1 or 2 depending if it is a one or two byte instruction) + the size of the operand.
case OperandType.InlineField:
intOperand = ilReader.ReadInt32();
string fieldInfo = GetFieldInformation(metadataReader, intOperand, provider);
instruction = new CilStringInstruction(opCode, fieldInfo, intOperand, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.InlineString:
intOperand = ilReader.ReadInt32();
bool isPrintable;
string str = GetArgumentString(metadataReader, intOperand, out isPrintable);
instruction = new CilStringInstruction(opCode, str, intOperand, expectedSize + (int)CilInstructionSize.Int32, isPrintable);
break;
case OperandType.InlineMethod:
intOperand = ilReader.ReadInt32();
string methodCall = SolveMethodName(metadataReader, intOperand, provider);
instruction = new CilStringInstruction(opCode, methodCall, intOperand, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.InlineType:
intOperand = ilReader.ReadInt32();
string type = GetTypeInformation(metadataReader, intOperand, provider);
instruction = new CilStringInstruction(opCode, type, intOperand, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.InlineTok:
intOperand = ilReader.ReadInt32();
string tokenType = GetInlineTokenType(metadataReader, intOperand, provider);
instruction = new CilStringInstruction(opCode, tokenType, intOperand, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.InlineI:
instruction = new CilInt32Instruction(opCode, ilReader.ReadInt32(), -1, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.InlineI8:
instruction = new CilInt64Instruction(opCode, ilReader.ReadInt64(), -1, expectedSize + (int)CilInstructionSize.Int64);
break;
case OperandType.InlineR:
instruction = new CilDoubleInstruction(opCode, ilReader.ReadDouble(), -1, expectedSize + (int)CilInstructionSize.Double);
break;
case OperandType.InlineSwitch:
instruction = CreateSwitchInstruction(ref ilReader, expectedSize, ilOffset, opCode);
break;
case OperandType.ShortInlineBrTarget:
instruction = new CilInt16BranchInstruction(opCode, ilReader.ReadSByte(), ilOffset, expectedSize + (int)CilInstructionSize.Byte);
break;
case OperandType.InlineBrTarget:
instruction = new CilBranchInstruction(opCode, ilReader.ReadInt32(), ilOffset, expectedSize + (int)CilInstructionSize.Int32);
break;
case OperandType.ShortInlineI:
instruction = new CilByteInstruction(opCode, ilReader.ReadByte(), -1, expectedSize + (int)CilInstructionSize.Byte);
break;
case OperandType.ShortInlineR:
instruction = new CilSingleInstruction(opCode, ilReader.ReadSingle(), -1, expectedSize + (int)CilInstructionSize.Single);
break;
case OperandType.InlineNone:
instruction = new CilInstructionWithNoValue(opCode, expectedSize);
break;
case OperandType.ShortInlineVar:
byte token = ilReader.ReadByte();
instruction = new CilInt16VariableInstruction(opCode, GetVariableName(opCode, token, methodDefinition), token, expectedSize + (int)CilInstructionSize.Byte);
break;
case OperandType.InlineVar:
shortOperand = ilReader.ReadUInt16();
instruction = new CilVariableInstruction(opCode, GetVariableName(opCode, shortOperand, methodDefinition), shortOperand, expectedSize + (int)CilInstructionSize.Int16);
break;
case OperandType.InlineSig:
intOperand = ilReader.ReadInt32();
instruction = new CilStringInstruction(opCode, GetSignature(metadataReader, intOperand, provider), intOperand, expectedSize + (int)CilInstructionSize.Int32);
break;
default:
break;
}
ilOffset += instruction.Size;
yield return instruction;
}
}