void WriteIL(LineWriter lw, MethodBase mb, MethodBody body, Type[] genericTypeArguments, Type[] genericMethodArguments)
{
ParameterInfo[] parameters = mb.GetParameters();
int level = lw.Column;
byte[] code = body.GetILAsByteArray();
lw.GoToColumn(level);
lw.WriteLine("// Code size {0} (0x{0:x})", code.Length);
lw.GoToColumn(level);
lw.WriteLine(".maxstack {0}", body.MaxStackSize);
IList <LocalVariableInfo> locals = body.LocalVariables;
if (locals.Count != 0)
{
lw.GoToColumn(level);
lw.Write(".locals ");
if (body.InitLocals)
{
lw.Write("init ");
}
lw.Write("(");
bool first = true;
foreach (var local in locals)
{
if (!first)
{
lw.WriteLine(",");
lw.GoToColumn(level + 9);
}
first = false;
WriteSignatureType(lw, local.LocalType, TypeLocation.Local);
if (local.IsPinned)
{
lw.Write(" pinned");
}
WriteCustomModifiers(lw, local.__GetCustomModifiers());
lw.Write(" V_{0}", local.LocalIndex);
}
lw.WriteLine(")");
}
var exceptions = new List <ExceptionHandlingClause>();
var exceptions2 = new List <ExceptionHandlingClause>();
SortExceptions(body.ExceptionHandlingClauses, exceptions, exceptions2);
Stack <ExceptionHandlingClause> activeExceptions = new Stack <ExceptionHandlingClause>();
ExceptionHandlingClause currentException = null;
bool extraNewLine = false;
int nextFlatException = 0;
int nextException = 0;
bool handler = false;
int pos = 0;
while (pos < code.Length)
{
if (extraNewLine)
{
lw.WriteLine();
extraNewLine = false;
}
if (currentException != null)
{
if (currentException.HandlerOffset == pos)
{
switch (currentException.Flags)
{
case ExceptionHandlingClauseOptions.Clause:
lw.GoToColumn(level - 2);
if (currentException.TryOffset + currentException.TryLength == pos)
{
lw.WriteLine("} // end .try");
}
else
{
lw.WriteLine("} // end handler");
}
lw.GoToColumn(level - 2);
lw.Write("catch ");
if (currentException.CatchType.__IsMissing || !currentException.CatchType.IsGenericType)
{
WriteTypeDefOrRef(lw, currentException.CatchType);
}
else
{
WriteSignatureType(lw, currentException.CatchType);
}
lw.WriteLine(" ");
lw.GoToColumn(level - 2);
lw.WriteLine("{");
handler = true;
break;
case ExceptionHandlingClauseOptions.Finally:
lw.GoToColumn(level - 2);
lw.WriteLine("} // end .try");
lw.GoToColumn(level - 2);
lw.WriteLine("finally");
lw.GoToColumn(level - 2);
lw.WriteLine("{");
break;
case ExceptionHandlingClauseOptions.Fault:
lw.GoToColumn(level - 2);
lw.WriteLine("} // end .try");
lw.GoToColumn(level - 2);
lw.WriteLine("fault");
lw.GoToColumn(level - 2);
lw.WriteLine("{");
break;
case ExceptionHandlingClauseOptions.Filter:
lw.GoToColumn(level - 2);
lw.WriteLine("} // end filter");
lw.GoToColumn(level - 2);
lw.WriteLine("{ // handler");
handler = true;
break;
default:
throw new Managed.Reflection.BadImageFormatException();
}
}
else if (currentException.FilterOffset == pos && pos != 0)
{
lw.GoToColumn(level - 2);
if (handler)
{
lw.WriteLine("} // end handler");
}
else
{
lw.WriteLine("} // end .try");
}
lw.GoToColumn(level - 2);
lw.WriteLine("filter");
lw.GoToColumn(level - 2);
lw.WriteLine("{");
}
}
while (nextException < exceptions.Count &&
exceptions[nextException].TryOffset == pos)
{
activeExceptions.Push(currentException);
ExceptionHandlingClause prevException = currentException;
currentException = exceptions[nextException++];
if (prevException != null && currentException.TryOffset == prevException.TryOffset && currentException.TryLength == prevException.TryLength)
{
// another handler for the same block
continue;
}
handler = false;
lw.GoToColumn(level);
lw.WriteLine(".try");
lw.GoToColumn(level);
lw.WriteLine("{");
level += 2;
}
lw.GoToColumn(level);
int currPos = pos;
lw.Write("IL_{0:x4}: ", pos);
int level1 = lw.Column;
short opcodeValue = code[pos++];
if (opcodeValue == 0xFE)
{
opcodeValue = (short)(0xFE00 + code[pos++]);
}
OpCode opcode = opcodes[opcodeValue + 512];
lw.Write("{0}", opcode.Name);
switch (opcode.OperandType)
{
case OperandType.InlineNone:
break;
case OperandType.InlineBrTarget:
lw.GoToColumn(level1 + 11);
lw.Write("IL_{0:x4}", ReadInt32(code, ref pos) + pos);
break;
case OperandType.ShortInlineBrTarget:
lw.GoToColumn(level1 + 11);
lw.Write("IL_{0:x4}", (sbyte)code[pos++] + pos);
break;
case OperandType.InlineMethod:
{
lw.GoToColumn(level1 + 11);
int token = ReadInt32(code, ref pos);
MethodBase methodOrConstructor = ResolveMethod(token, genericTypeArguments, genericMethodArguments);
if ((methodOrConstructor.CallingConvention & CallingConventions.Any) == CallingConventions.VarArgs)
{
CustomModifiers[] customModifiers;
Type[] optionalParameterTypes = ResolveOptionalParameterTypes(token, genericTypeArguments, genericMethodArguments, out customModifiers);
WriteInlineMethod(lw, methodOrConstructor, optionalParameterTypes, customModifiers);
}
else
{
WriteInlineMethod(lw, methodOrConstructor, Type.EmptyTypes, null);
}
}
break;
case OperandType.InlineField:
lw.GoToColumn(level1 + 11);
WriteInlineField(lw, ResolveField(ReadInt32(code, ref pos), genericTypeArguments, genericMethodArguments));
break;
case OperandType.InlineI:
lw.GoToColumn(level1 + 11);
WriteInlineI(lw, ReadInt32(code, ref pos));
break;
case OperandType.InlineI8:
lw.GoToColumn(level1 + 11);
WriteInlineI8(lw, ReadInt64(code, ref pos));
break;
case OperandType.ShortInlineI:
lw.GoToColumn(level1 + 11);
lw.Write("{0}", (sbyte)code[pos++]);
break;
case OperandType.InlineR:
lw.GoToColumn(level1 + 11);
WriteInlineR(lw, ReadDouble(code, ref pos), false);
break;
case OperandType.ShortInlineR:
lw.GoToColumn(level1 + 11);
WriteShortInlineR(lw, ReadSingle(code, ref pos), false);
break;
case OperandType.InlineType:
if (opcode == OpCodes.Constrained)
{
// "constrained." is too long to fit in the opcode column
lw.Write(" ");
}
else
{
lw.GoToColumn(level1 + 11);
}
WriteInlineType(lw, ReadInt32(code, ref pos), genericTypeArguments, genericMethodArguments);
break;
case OperandType.InlineTok:
{
int token = ReadInt32(code, ref pos);
switch (token >> 24)
{
case 0x01:
case 0x02:
lw.GoToColumn(level1 + 11);
WriteTypeDefOrRef(lw, ResolveType(token, genericTypeArguments, genericMethodArguments));
break;
case 0x1B:
{
Type type = ResolveType(token, genericTypeArguments, genericMethodArguments);
if (type.IsGenericTypeDefinition)
{
// HACK because typeof(Foo<>).MakeGenericType(typeof(Foo<>).GetGenericArguments()) == typeof(Foo<>)
// we need to inflate the builder here
type = type.MakeGenericType(type.GetGenericArguments());
}
lw.GoToColumn(level1 + 11);
WriteSignatureType(lw, type);
break;
}
case 0x04:
case 0x06:
case 0x0A:
case 0x2B:
{
MemberInfo member = ResolveMember(token, genericTypeArguments, genericMethodArguments);
if (member is FieldInfo)
{
lw.GoToColumn(level1 + 11);
lw.Write("field ");
WriteInlineField(lw, (FieldInfo)member);
}
else
{
var mb1 = (MethodBase)member;
lw.GoToColumn(level1 + 11);
if (mb1.__IsMissing || !mb1.IsGenericMethod || compat != CompatLevel.V20)
{
lw.Write("method ");
}
WriteInlineMethod(lw, mb1, Type.EmptyTypes, null);
}
break;
}
default:
throw new NotImplementedException("token type = " + (token >> 24));
}
}
break;
case OperandType.InlineVar:
lw.GoToColumn(level1 + 11);
WriteInlineVar(lw, mb, opcode, parameters, ReadInt16(code, ref pos));
break;
case OperandType.ShortInlineVar:
lw.GoToColumn(level1 + 11);
WriteInlineVar(lw, mb, opcode, parameters, code[pos++]);
break;
case OperandType.InlineString:
lw.GoToColumn(level1 + 11);
WriteInlineString(lw, module.ResolveString(ReadInt32(code, ref pos)), level);
break;
case OperandType.InlineSwitch:
{
lw.GoToColumn(level1 + 11);
lw.WriteLine("( ");
int count = ReadInt32(code, ref pos);
int offset = pos + 4 * count;
for (int i = 0; i < count - 1; i++)
{
lw.GoToColumn(level + 22);
lw.WriteLine("IL_{0:x4},", offset + ReadInt32(code, ref pos));
}
lw.GoToColumn(level + 22);
lw.Write("IL_{0:x4})", offset + ReadInt32(code, ref pos));
}
break;
case OperandType.InlineSig:
lw.GoToColumn(level1 + 11);
WriteStandAloneMethodSig(lw, module.__ResolveStandAloneMethodSig(ReadInt32(code, ref pos), genericTypeArguments, genericMethodArguments), false, false);
break;
default:
throw new InvalidOperationException();
}
lw.WriteLine();
if (opcode == OpCodes.Leave || opcode == OpCodes.Leave_S)
{
if (pos < code.Length)
{
lw.WriteLine();
}
}
else if (opcode != OpCodes.Switch && opcode != OpCodes.Rethrow && opcode != OpCodes.Endfilter && opcode != OpCodes.Endfinally)
{
switch (opcode.FlowControl)
{
case FlowControl.Branch:
case FlowControl.Cond_Branch:
case FlowControl.Throw:
case FlowControl.Return:
extraNewLine = true;
break;
}
}
if (nextFlatException < exceptions2.Count && exceptions2[nextFlatException].HandlerOffset + exceptions2[nextFlatException].HandlerLength == currPos)
{
if (extraNewLine && pos < code.Length)
{
extraNewLine = false;
lw.WriteLine();
}
lw.GoToColumn(level);
if (exceptions2[nextFlatException].FilterOffset == 0)
{
lw.Write(".try IL_{0:x4} to IL_{1:x4} catch ", exceptions2[nextFlatException].TryOffset, exceptions2[nextFlatException].TryOffset + exceptions2[nextFlatException].TryLength);
if (exceptions2[nextFlatException].CatchType.__IsMissing || !exceptions2[nextFlatException].CatchType.IsGenericType)
{
WriteTypeDefOrRef(lw, exceptions2[nextFlatException].CatchType);
}
else
{
WriteSignatureType(lw, exceptions2[nextFlatException].CatchType);
}
lw.WriteLine(" handler IL_{0:x4} to IL_{1:x4}", exceptions2[nextFlatException].HandlerOffset, exceptions2[nextFlatException].HandlerOffset + exceptions2[nextFlatException].HandlerLength);
}
else
{
lw.WriteLine(".try IL_{0:x4} to IL_{1:x4} filter IL_{2:x4} handler IL_{3:x4} to IL_{4:x4}",
exceptions2[nextFlatException].TryOffset, exceptions2[nextFlatException].TryOffset + exceptions2[nextFlatException].TryLength,
exceptions2[nextFlatException].FilterOffset,
exceptions2[nextFlatException].HandlerOffset, exceptions2[nextFlatException].HandlerOffset + exceptions2[nextFlatException].HandlerLength);
}
nextFlatException++;
}
while (currentException != null && currentException.HandlerOffset + currentException.HandlerLength == pos)
{
ExceptionHandlingClause prevException = currentException;
currentException = activeExceptions.Pop();
if (currentException == null || currentException.TryOffset != prevException.TryOffset || currentException.TryLength != prevException.TryLength)
{
if (extraNewLine && pos < code.Length)
{
extraNewLine = false;
lw.WriteLine();
}
level -= 2;
lw.GoToColumn(level);
lw.WriteLine("} // end handler");
handler = false;
}
else
{
handler = true;
}
}
}
}
