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Cosmos/source2/Users/Matthijs/Testing/ReflectionToEcmaCil/Reader.Scanning.cs
mterwoord_cp d42206e826
2011-02-10 14:41:03 +00:00

755 lines
40 KiB
C#
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection.Emit;
using System.Reflection;
using Cil = EcmaCil.IL;
namespace ReflectionToEcmaCil
{
partial class Reader
{
private void ScanType(QueuedType aType, EcmaCil.TypeMeta aTypeMeta)
{
#if DEBUG
var xSB = new StringBuilder();
xSB.Append(aType.Type.ToString());
if (aType.Args.Length > 0)
{
xSB.Append("<");
for (int i = 0; i < aType.Args.Length; i++)
{
xSB.Append(aType.Args[i].ToString());
if (i < (aType.Args.Length - 1))
{
xSB.Append(", ");
}
}
xSB.Append(">");
}
aTypeMeta.Data[EcmaCil.DataIds.DebugMetaId] = xSB.ToString();
#endif
}
private void ScanMethod(QueuedMethod aMethod, EcmaCil.MethodMeta aMethodMeta)
{
// todo: add support for plugs
#if DEBUG
aMethodMeta.Data[EcmaCil.DataIds.DebugMetaId] = aMethod.Method.GetFullName();
#endif
aMethodMeta.IsVirtual = aMethod.Method.IsVirtual;
aMethodMeta.IsPublic = aMethod.Method.IsPublic;
var xMethod = aMethod.Method;
aMethodMeta.StartsNewVirtualTree = aMethodMeta.IsVirtual && ((aMethod.Method.Attributes & MethodAttributes.NewSlot) == MethodAttributes.NewSlot);
var xParamOffset = 0;
if (!aMethod.Method.IsStatic)
{
xParamOffset = 1;
}
var xMethodParameters = aMethod.Method.GetParameters();
aMethodMeta.Parameters = new EcmaCil.MethodParameterMeta[xMethodParameters.Length + xParamOffset];
if (!aMethod.Method.IsStatic)
{
aMethodMeta.Parameters[0] = new EcmaCil.MethodParameterMeta
{
IsByRef = aMethod.Method.DeclaringType.IsValueType,
PropertyType = EnqueueType(aMethod.Method.DeclaringType, aMethod, "Declaring type")
};
#if DEBUG
aMethodMeta.Parameters[0].Data[EcmaCil.DataIds.DebugMetaId] = "$this";
#endif
}
for (int i = 0; i < xMethodParameters.Length; i++)
{
var xParam = xMethodParameters[i];
var xParamType = xParam.ParameterType;
var xParamMeta = aMethodMeta.Parameters[i + xParamOffset] = new EcmaCil.MethodParameterMeta();
var xType = EnqueueType(xParamType, aMethod, "parameter");
#if DEBUG
var xSB = new StringBuilder();
xSB.Append(xParam.Name);
xSB.Append(": ");
if (xParamMeta.IsByRef)
{
xSB.Append("ref ");
}
xSB.Append(xParamType.ToString());
xParamMeta.Data[EcmaCil.DataIds.DebugMetaId] = xSB.ToString();
#endif
xParamMeta.PropertyType = xType;
}
if (aMethodMeta.IsVirtual && ((aMethod.Method.Attributes & MethodAttributes.NewSlot) != MethodAttributes.NewSlot))
{
// method is override
// now need to find parent method, just one level up, because when the parent method is scanned, its parent method will be found..
var xBaseType = aMethod.Method.DeclaringType;
#if DEBUG
if (xBaseType == null)
{
throw new Exception("New virtual method found, but declaring type has no base type");
}
#endif
var xBindFlags = BindingFlags.Instance;
if (xMethod.IsPublic)
{
xBindFlags |= BindingFlags.Public;
}
else
{
xBindFlags |= BindingFlags.NonPublic;
}
var xFoundMethod = xBaseType.GetMethod(aMethod.Method.Name,
xBindFlags, null, (from item in xMethodParameters
select item.ParameterType).ToArray(), null);
if (xFoundMethod != null)
{
EnqueueMethod(xFoundMethod, aMethod, "Overridden method");
}
}
var xMethodInfo = aMethod.Method as MethodInfo;
var xReturnType = typeof(void);
if (xMethodInfo != null)
{
xReturnType = xMethodInfo.ReturnType;
}
if (xReturnType != typeof(void))
{
aMethodMeta.ReturnType = EnqueueType(xReturnType, aMethod.Method, "Return Type");
}
aMethodMeta.IsStatic = aMethod.Method.IsStatic;
ScanMethodBody(aMethod, aMethodMeta);
}
protected virtual void ScanMethodBody(QueuedMethod aMethod, EcmaCil.MethodMeta aMethodMeta)
{
var xBody = aMethod.Method.GetMethodBody();
if (xBody != null)
{
var xBodyMeta = aMethodMeta.Body = new EcmaCil.MethodBodyMeta();
xBodyMeta.InitLocals = xBody.InitLocals;
#region handle exception handling clauses
if (xBody.ExceptionHandlingClauses.Count > 0)
{
throw new Exception("ExceptionHandlers are not supported yet");
}
#endregion
#region handle locals
xBodyMeta.LocalVariables = new EcmaCil.LocalVariableMeta[xBody.LocalVariables.Count];
for (int i = 0; i < xBody.LocalVariables.Count; i++)
{
var xVar = xBody.LocalVariables[i];
var xVarMeta = xBodyMeta.LocalVariables[i] = new EcmaCil.LocalVariableMeta();
xVarMeta.LocalType = EnqueueType(xVar.LocalType, aMethod, "Local variable");
#if DEBUG
xVarMeta.Data[EcmaCil.DataIds.DebugMetaId] = xVar.LocalType.ToString();
#endif
}
#endregion
//List<EcmaCil.IL.BaseInstruction> xInstructions;
var xILOffsetToInstructionOffset = new Dictionary<int, int>();
var xInstructionOffsetToILOffset = new Dictionary<int, int>();
var xSecondStageInits = new List<Action<EcmaCil.MethodMeta>>();
var xILStream = xBody.GetILAsByteArray();
foreach (var xPosition in ILStreamPositionReader.GetIndexes(xILStream))
{
xILOffsetToInstructionOffset.Add(xPosition.Key, xPosition.Value);
xInstructionOffsetToILOffset.Add(xPosition.Value, xPosition.Key);
}
xBodyMeta.Instructions = ScanMethodBody_DoIt(aMethod.Method, aMethodMeta, xILOffsetToInstructionOffset, xInstructionOffsetToILOffset).ToArray();
}
}
// We split this into two arrays since we have to read
// a byte at a time anways. In the future if we need to
// back to a unifed array, instead of 64k entries
// we can change it to a signed int, and then add x0200 to the value.
// This will reduce array size down to 768 entries.
static readonly OpCode[] mOpCodesLo = new OpCode[256];
static readonly OpCode[] mOpCodesHi = new OpCode[256];
static Reader()
{
LoadOpCodes();
}
protected static void LoadOpCodes()
{
foreach (var xField in typeof(OpCodes).GetFields(BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.Public))
{
var xOpCode = (OpCode)xField.GetValue(null);
var xValue = (ushort)xOpCode.Value;
if (xValue <= 0xFF)
{
mOpCodesLo[xValue] = xOpCode;
}
else
{
mOpCodesHi[xValue & 0xFF] = xOpCode;
}
}
}
protected static void CheckBranch(int aTarget, int aMethodSize)
{
if (aTarget < 0 || aTarget >= aMethodSize)
{
throw new Exception("Branch jumps outside method.");
}
}
protected List<EcmaCil.IL.BaseInstruction> ScanMethodBody_DoIt(MethodBase aMethod, EcmaCil.MethodMeta aMethodMeta, IDictionary<int, int> aILOffsetToInstructionIndex, IDictionary<int, int> aInstructionIndexToILOffset)
{
var xResult = new List<EcmaCil.IL.BaseInstruction>(aILOffsetToInstructionIndex.Count);
var xBody = aMethod.GetMethodBody();
// Cache for use in field and method resolution
Type[] xTypeGenArgs = null;
Type[] xMethodGenArgs = null;
if (aMethod.DeclaringType.IsGenericType)
{
xTypeGenArgs = aMethod.DeclaringType.GetGenericArguments();
}
if (aMethod.IsGenericMethod)
{
xMethodGenArgs = aMethod.GetGenericArguments();
}
// Some methods return no body. Not sure why.. have to investigate
// They arent abstracts or icalls...
// MtW: how about externs (pinvoke, etc)
if (xBody == null)
{
return null;
}
var xIL = xBody.GetILAsByteArray();
int xPos = 0;
var xInstructionIndex = 0;
var xInitSecondStage = new List<Action>(aILOffsetToInstructionIndex.Count);
while (xPos < xIL.Length)
{
ExceptionHandlingClause xCurrentHandler = null;
#region Determine current handler
// todo: add support for nested handlers using a stack or so..
foreach (ExceptionHandlingClause xHandler in xBody.ExceptionHandlingClauses)
{
if (xHandler.TryOffset > 0)
{
if (xHandler.TryOffset <= xPos && (xHandler.TryLength + xHandler.TryOffset + 1) > xPos) // + 1 because index should be less than the try
{
if (xCurrentHandler == null)
{
xCurrentHandler = xHandler;
continue;
}
else if (xHandler.TryOffset > xCurrentHandler.TryOffset && (xHandler.TryLength + xHandler.TryOffset) < (xCurrentHandler.TryLength + xCurrentHandler.TryOffset))
{
// only replace if the current found handler is narrower
xCurrentHandler = xHandler;
continue;
}
}
}
if (xHandler.HandlerOffset > 0)
{
if (xHandler.HandlerOffset <= xPos && (xHandler.HandlerOffset + xHandler.HandlerLength + 1) > xPos)
{
if (xCurrentHandler == null)
{
xCurrentHandler = xHandler;
continue;
}
else if (xHandler.HandlerOffset > xCurrentHandler.HandlerOffset && (xHandler.HandlerOffset + xHandler.HandlerLength) < (xCurrentHandler.HandlerOffset + xCurrentHandler.HandlerLength))
{
// only replace if the current found handler is narrower
xCurrentHandler = xHandler;
continue;
}
}
}
if ((xHandler.Flags & ExceptionHandlingClauseOptions.Filter) > 0)
{
if (xHandler.FilterOffset > 0)
{
if (xHandler.FilterOffset <= xPos)
{
if (xCurrentHandler == null)
{
xCurrentHandler = xHandler;
continue;
}
else if (xHandler.FilterOffset > xCurrentHandler.FilterOffset)
{
// only replace if the current found handler is narrower
xCurrentHandler = xHandler;
continue;
}
}
}
}
}
#endregion
OpCodeEnum xOpCodeVal;
OpCode xOpCode;
int xOpPos = xPos;
if (xIL[xPos] == 0xFE)
{
xOpCodeVal = (OpCodeEnum)(0xFE00 | xIL[xPos + 1]);
xOpCode = mOpCodesHi[xIL[xPos + 1]];
xPos = xPos + 2;
}
else
{
xOpCodeVal = (OpCodeEnum)xIL[xPos];
xOpCode = mOpCodesLo[xIL[xPos]];
xPos++;
}
EcmaCil.IL.BaseInstruction xILOpCode = null;
Cil.InstructionBranch xBranch;
Console.WriteLine(xOpCode.ToString() + " " + xOpCode.OperandType);
#region switch(xOpCode.OperandType)
switch (xOpCode.OperandType)
{
// No operand.
case OperandType.InlineNone:
{
#region Inline none options
// These shortcut translation regions expand shortcut ops into full ops
// This elminates the amount of code required in the assemblers
// by allowing them to ignore the shortcuts
switch (xOpCodeVal)
{
case OpCodeEnum.Ldarg_0:
xILOpCode = new Cil.InstructionArgument(EcmaCil.IL.InstructionKindEnum.Ldarg, xInstructionIndex, aMethodMeta.Parameters[0]);
break;
case OpCodeEnum.Ldarg_1:
xILOpCode = new Cil.InstructionArgument(EcmaCil.IL.InstructionKindEnum.Ldarg, xInstructionIndex, aMethodMeta.Parameters[1]);
break;
case OpCodeEnum.Ldarg_2:
xILOpCode = new Cil.InstructionArgument(EcmaCil.IL.InstructionKindEnum.Ldarg, xInstructionIndex, aMethodMeta.Parameters[2]);
break;
case OpCodeEnum.Ldarg_3:
xILOpCode = new Cil.InstructionArgument(EcmaCil.IL.InstructionKindEnum.Ldarg, xInstructionIndex, aMethodMeta.Parameters[3]);
break;
case OpCodeEnum.Ldc_I4_0:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 0);
break;
case OpCodeEnum.Ldc_I4_1:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 1);
break;
case OpCodeEnum.Ldc_I4_2:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 2);
break;
case OpCodeEnum.Ldc_I4_3:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 3);
break;
case OpCodeEnum.Ldc_I4_4:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 4);
break;
case OpCodeEnum.Ldc_I4_5:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 5);
break;
case OpCodeEnum.Ldc_I4_6:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 6);
break;
case OpCodeEnum.Ldc_I4_7:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 7);
break;
case OpCodeEnum.Ldc_I4_8:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, 8);
break;
case OpCodeEnum.Ldc_I4_M1:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, -1);
break;
case OpCodeEnum.Ldloc_0:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Ldloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[0]);
break;
case OpCodeEnum.Ldloc_1:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Ldloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[1]);
break;
case OpCodeEnum.Ldloc_2:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Ldloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[2]);
break;
case OpCodeEnum.Ldloc_3:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Ldloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[3]);
break;
case OpCodeEnum.Stloc_0:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Stloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[0]);
break;
case OpCodeEnum.Stloc_1:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Stloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[1]);
break;
case OpCodeEnum.Stloc_2:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Stloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[2]);
break;
case OpCodeEnum.Stloc_3:
xILOpCode = new Cil.InstructionLocal(EcmaCil.IL.InstructionKindEnum.Stloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[3]);
break;
default:
xILOpCode = new Cil.InstructionNone((EcmaCil.IL.InstructionKindEnum)xOpCodeVal, xInstructionIndex);
break;
}
#endregion
break;
}
case OperandType.ShortInlineBrTarget:
{
#region Inline branch
// By calculating target, we assume all branches are within a method
// So far at least wtih csc, its true. We check it with CheckBranch
// just in case.
int xTarget = xPos + 1 + (sbyte)xIL[xPos];
CheckBranch(xTarget, xIL.Length);
switch (xOpCodeVal)
{
case OpCodeEnum.Beq_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Beq, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Bge_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Bge, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Bge_Un_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Bge_Un, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Bgt_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Bgt, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Bgt_Un_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Bgt_Un, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Ble_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Ble, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Ble_Un_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Ble_Un, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Blt_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Blt, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Blt_Un_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Blt_Un, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Bne_Un_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Bne_Un, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Br_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Br, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Brfalse_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Brfalse, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Brtrue_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Brtrue, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
case OpCodeEnum.Leave_S:
xBranch = new Cil.InstructionBranch(EcmaCil.IL.InstructionKindEnum.Leave, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
default:
xBranch = new Cil.InstructionBranch((EcmaCil.IL.InstructionKindEnum)xOpCodeVal, xInstructionIndex);
xILOpCode = xBranch;
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
break;
}
xPos = xPos + 1;
break;
#endregion
}
case OperandType.InlineBrTarget:
{
int xTarget = xPos + 4 + (Int32)ReadInt32(xIL, xPos);
CheckBranch(xTarget, xIL.Length);
xILOpCode = xBranch = new Cil.InstructionBranch((EcmaCil.IL.InstructionKindEnum)xOpCodeVal, xInstructionIndex);
xInitSecondStage.Add(delegate
{
xBranch.Target = xResult[aILOffsetToInstructionIndex[xTarget]];
});
xPos = xPos + 4;
break;
}
case OperandType.ShortInlineI:
switch (xOpCodeVal)
{
case OpCodeEnum.Ldc_I4_S:
xILOpCode = new Cil.InstructionInt32(EcmaCil.IL.InstructionKindEnum.Ldc_I4, xInstructionIndex, xIL[xPos]);
break;
default:
xILOpCode = new Cil.InstructionInt32((EcmaCil.IL.InstructionKindEnum)xOpCodeVal, xInstructionIndex, xIL[xPos]);
break;
}
xPos = xPos + 1;
break;
case OperandType.InlineI:
xILOpCode = new Cil.InstructionInt32((Cil.InstructionKindEnum)xOpCodeVal, xInstructionIndex, ReadInt32(xIL, xPos));
xPos = xPos + 4;
break;
case OperandType.InlineI8:
xILOpCode = new Cil.InstructionInt64((Cil.InstructionKindEnum)xOpCodeVal, xInstructionIndex, ReadInt64(xIL, xPos));
xPos = xPos + 8;
break;
case OperandType.ShortInlineR:
// this is not correct:
//xILOpCode = new Cil.InstructionSingle(
//xILOpCode = new ILOpCodes.OpSingle(xOpCodeVal, xOpPos, xPos + 4, BitConverter.ToSingle(xIL, xPos), xCurrentHandler);
//xPos = xPos + 4;
//break;
throw new NotImplementedException();
case OperandType.InlineR:
// this is not correct
//xILOpCode = new ILOpCodes.OpDouble(xOpCodeVal, xOpPos, xPos + 8, BitConverter.ToDouble(xIL, xPos), xCurrentHandler);
//xPos = xPos + 8;
//break;
throw new NotImplementedException();
// The operand is a 32-bit metadata token.
case OperandType.InlineField:
throw new NotImplementedException();
//{
// var xValue = aMethod.Module.ResolveField((int)ReadInt32(xIL, xPos), xTypeGenArgs, xMethodGenArgs);
// xILOpCode = new ILOpCodes.OpField(xOpCodeVal, xOpPos, xPos + 4, xValue, xCurrentHandler);
// xPos = xPos + 4;
// break;
//}
// The operand is a 32-bit metadata token.
case OperandType.InlineMethod:
var xTargetMethod = EnqueueMethod(aMethod.DeclaringType.Module.ResolveMethod(ReadInt32(xIL, xPos)), aMethod, "Method Call");
xILOpCode = new Cil.InstructionMethod((Cil.InstructionKindEnum)xOpCodeVal, xInstructionIndex, xTargetMethod);
xPos = xPos + 4;
break;
//{
// var xValue = aMethod.Module.ResolveMethod((int)ReadInt32(xIL, xPos), xTypeGenArgs, xMethodGenArgs);
// xILOpCode = new ILOpCodes.OpMethod(xOpCodeVal, xOpPos, xPos + 4, xValue, xCurrentHandler);
// xPos = xPos + 4;
// break;
//}
// 32-bit metadata signature token.
case OperandType.InlineSig:
throw new NotImplementedException();
case OperandType.InlineString:
xILOpCode = new Cil.InstructionString(Cil.InstructionKindEnum.Ldstr, xInstructionIndex, aMethod.Module.ResolveString(ReadInt32(xIL, xPos)));
xPos = xPos + 4;
break;
case OperandType.InlineSwitch:
throw new NotImplementedException();
//{
// int xCount = (int)ReadInt32(xIL, xPos);
// xPos = xPos + 4;
// int xNextOpPos = xPos + xCount * 4;
// int[] xBranchLocations = new int[xCount];
// for (int i = 0; i < xCount; i++)
// {
// xBranchLocations[i] = xNextOpPos + (int)ReadInt32(xIL, xPos + i * 4);
// CheckBranch(xBranchLocations[i], xIL.Length);
// }
// xILOpCode = new ILOpCodes.OpSwitch(xOpCodeVal, xOpPos, xPos, xBranchLocations, xCurrentHandler);
// xPos = xNextOpPos;
// break;
//}
// The operand is a FieldRef, MethodRef, or TypeRef token.
case OperandType.InlineTok:
throw new NotImplementedException();
//xILOpCode = new ILOpCodes.OpToken(xOpCodeVal, xOpPos, xPos + 4, ReadInt32(xIL, xPos), aMethod.Module, xTypeGenArgs, xMethodGenArgs, xCurrentHandler);
// xPos = xPos + 4;
// break;
// 32-bit metadata token.
case OperandType.InlineType:
throw new NotImplementedException();
//{
// var xValue = aMethod.Module.ResolveType((int)ReadInt32(xIL, xPos), xTypeGenArgs, xMethodGenArgs);
// xILOpCode = new ILOpCodes.OpType(xOpCodeVal, xOpPos, xPos + 4, xValue, xCurrentHandler);
// xPos = xPos + 4;
// break;
//}
case OperandType.ShortInlineVar:
switch (xOpCodeVal)
{
case OpCodeEnum.Ldloc_S:
xILOpCode = new Cil.InstructionLocal(Cil.InstructionKindEnum.Ldloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[xIL[xPos]]);
break;
case OpCodeEnum.Ldloca_S:
xILOpCode = new Cil.InstructionLocal(Cil.InstructionKindEnum.Ldloca, xInstructionIndex, aMethodMeta.Body.LocalVariables[xIL[xPos]]);
break;
case OpCodeEnum.Ldarg_S:
xILOpCode = new Cil.InstructionArgument(Cil.InstructionKindEnum.Ldarg, xInstructionIndex, aMethodMeta.Parameters[xIL[xPos]]);
break;
case OpCodeEnum.Ldarga_S:
xILOpCode = new Cil.InstructionArgument(Cil.InstructionKindEnum.Ldarga, xInstructionIndex, aMethodMeta.Parameters[xIL[xPos]]);
break;
case OpCodeEnum.Starg_S:
xILOpCode = new Cil.InstructionArgument(Cil.InstructionKindEnum.Starg, xInstructionIndex, aMethodMeta.Parameters[xIL[xPos]]);
break;
case OpCodeEnum.Stloc_S:
xILOpCode = new Cil.InstructionLocal(Cil.InstructionKindEnum.Stloc, xInstructionIndex, aMethodMeta.Body.LocalVariables[xIL[xPos]]);
break;
default:
throw new NotImplementedException();
//xILOpCode = new ILOpCodes.OpVar(xOpCodeVal, xOpPos, xPos + 1, xIL[xPos], xCurrentHandler);
//break;
}
xPos = xPos + 1;
break;
case OperandType.InlineVar:
//xILOpCode = new ILOpCodes.OpVar(xOpCodeVal, xOpPos, xPos + 2, ReadUInt16(xIL, xPos), xCurrentHandler);
//xPos = xPos + 2;
throw new NotImplementedException();
break;
default:
throw new Exception("Unknown OperandType");
}
#endregion switch(xOpCode.OperandType)
xResult.Add(xILOpCode);
xInstructionIndex++;
}
foreach (var xAction in xInitSecondStage)
{
xAction();
}
return xResult;
}
// We could use BitConvertor, unfortuantely they "hardcoded" endianness. Its fine for reading IL now...
// but they essentially do the same as we do, just a bit slower.
private static UInt16 ReadUInt16(byte[] aBytes, int aPos)
{
return (UInt16)(aBytes[aPos + 1] << 8 | aBytes[aPos]);
}
private static Int32 ReadInt32(byte[] aBytes, int aPos)
{
return (Int32)(aBytes[aPos + 3] << 24 | aBytes[aPos + 2] << 16 | aBytes[aPos + 1] << 8 | aBytes[aPos]);
}
private static Int64 ReadInt64(byte[] aBytes, int aPos)
{
//return (UInt64)(
// aBytes[aPos + 7] << 56 | aBytes[aPos + 6] << 48 | aBytes[aPos + 5] << 40 | aBytes[aPos + 4] << 32
// | aBytes[aPos + 3] << 24 | aBytes[aPos + 2] << 16 | aBytes[aPos + 1] << 8 | aBytes[aPos]);
return BitConverter.ToInt64(aBytes, aPos);
}
private void ScanArrayType(QueuedArrayType aArrayType, EcmaCil.ArrayTypeMeta aArrayMeta)
{
aArrayMeta.Dimensions = aArrayType.ArrayType.GetArrayRank();
// todo: fix?
// foreach (ArrayDimension xDimension in aType.ArrayType.Dimensions)
//{
// if (xDimension.LowerBound != 0 || xDimension.UpperBound != 0)
// {
// throw new Exception("Arrays with limited dimensions not supported");
// }
//}
if (aArrayType.ArrayType.GetArrayRank() != 1)
{
throw new Exception("Multidimensional arrays not yet supported!");
}
#if DEBUG
var xSB = new StringBuilder();
xSB.Append(aArrayMeta.ElementType.ToString());
xSB.Append("[");
xSB.Append(new String(',', aArrayMeta.Dimensions - 1));
xSB.Append("]");
aArrayMeta.Data[EcmaCil.DataIds.DebugMetaId] = xSB.ToString();
#endif
}
private void ScanVMT()
{
}
}
}
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