private Signature LoadEntryPoint()
{
_opFlags = _opFlags.SetBitAtIndex(LoadEntryPointFlag, false);
int token = (int)_image.CorHeader.EntryPointToken;
if (token == 0)
{
return(null);
}
int rid = MetadataToken.GetRID(token);
if (rid == 0)
{
return(null);
}
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.Method:
return(MethodReference.LoadMethodDef(this, rid));
case MetadataTokenType.File:
return(FileReference.Load(this, rid));
}
return(null);
}
private static Signature LoadResolutionScope(Module module, int token)
{
int rid = MetadataToken.GetRID(token);
if (rid == 0)
{
return(null);
}
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.TypeRef:
return(LoadTypeRef(module, rid));
case MetadataTokenType.Assembly: // Current assembly.
case MetadataTokenType.Module: // Current module.
return(null);
case MetadataTokenType.AssemblyRef:
return(AssemblyReference.LoadRef(module, rid));
case MetadataTokenType.ModuleRef:
return(ModuleReference.LoadRef(module, rid));
default:
throw new AssemblyLoadException(string.Format(SR.AssemblyLoadError, module.Location));
}
}
internal static FieldReference Load(Module module, int token)
{
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.Field:
return(LoadFieldDef(module, MetadataToken.GetRID(token)));
case MetadataTokenType.MemberRef:
return((FieldReference)MethodReference.LoadMemberRef(module, MetadataToken.GetRID(token)));
default:
throw new Exception(string.Format("Invalid token {0}. Expected FieldRef.", MetadataToken.GetType(token)));
}
}
internal static TypeReference LoadTypeDefOrRef(Module module, int token, bool?isValueType = null)
{
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.TypeRef:
return(LoadTypeRef(module, MetadataToken.GetRID(token), isValueType));
case MetadataTokenType.TypeDef:
return(LoadTypeDef(module, MetadataToken.GetRID(token), isValueType));
default:
throw new InvalidDataException(string.Format("Invalid token {0}. Expected TypeDefOrRef.", MetadataToken.GetType(token)));
}
}
internal static MethodReference LoadMethodDefOrRef(Module module, int token)
{
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.Method:
return(LoadMethodDef(module, MetadataToken.GetRID(token)));
case MetadataTokenType.MemberRef:
return((MethodReference)LoadMemberRef(module, MetadataToken.GetRID(token)));
default:
throw new Exception(string.Format("Invalid method reference token {0}", token.ToString()));
}
}
internal static TypeSignature Load(Module module, int token)
{
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.TypeRef:
return(TypeReference.LoadTypeRef(module, MetadataToken.GetRID(token)));
case MetadataTokenType.TypeDef:
return(TypeReference.LoadTypeDef(module, MetadataToken.GetRID(token)));
case MetadataTokenType.TypeSpec:
return(LoadTypeSpec(module, MetadataToken.GetRID(token)));
default:
throw new InvalidDataException(string.Format("Invalid token {0}. Expected TypeDefOrRef.", MetadataToken.GetType(token)));
}
}
protected void Load()
{
var image = _module.Image;
ManifestResourceRow row;
image.GetManifestResource(_rid, out row);
_name = image.GetString(row.Name);
_visibility = (ResourceVisibilityFlags)row.Flags;
_offset = row.Offset;
int implementationToken = MetadataToken.DecompressImplementation(row.Implementation);
switch (MetadataToken.GetType(implementationToken))
{
case MetadataTokenType.AssemblyRef:
{
int rid = MetadataToken.GetRID(implementationToken);
_owner = AssemblyReference.LoadRef(_module, rid);
}
break;
case MetadataTokenType.File:
{
int rid = MetadataToken.GetRID(implementationToken);
_owner = FileReference.Load(_module, rid);
}
break;
default:
{
_opFlags = _opFlags.SetBitAtIndex(LoadDataFromImageFlag, true);
}
break;
}
}
private void Load(IBinaryAccessor accessor, Module module)
{
int flags = accessor.ReadByte();
if ((flags & ILMethodFlags.FormatMask) == ILMethodFlags.FatFormat)
{
// Fat format
accessor.ReadByte();
_maxStackSize = accessor.ReadUInt16();
int codeSize = accessor.ReadInt32();
_initLocals = ((flags & ILMethodFlags.InitLocals) == ILMethodFlags.InitLocals);
_localVarToken = accessor.ReadInt32();
if (MetadataToken.GetType(_localVarToken) == MetadataTokenType.Signature)
{
LoadLocalVariables(module, MetadataToken.GetRID(_localVarToken));
}
LoadInstructions(accessor, module, codeSize);
if ((flags & ILMethodFlags.MoreSects) == ILMethodFlags.MoreSects)
{
// More sections
LoadSection(accessor, module);
}
}
else
{
// Tiny format
// Used when the method is tiny (< 64 bytes), and there are no local vars
_maxStackSize = 8;
int codeSize = flags >> 2;
LoadInstructions(accessor, module, codeSize);
}
}
private static Signature LoadExportedTypeImplementation(Module module, int token)
{
int rid = MetadataToken.GetRID(token);
if (rid == 0)
{
return(null);
}
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.File:
return(ModuleReference.LoadFile(module, rid));
case MetadataTokenType.AssemblyRef:
return(AssemblyReference.LoadRef(module, rid));
case MetadataTokenType.ExportedType:
return(LoadExportedType(module, rid));
default:
throw new AssemblyLoadException(string.Format(SR.AssemblyLoadError, module.Location));
}
}
private void LoadInstructions(IBinaryAccessor accessor, Module module, int codeSize)
{
long startOffset = accessor.Position;
var image = module.Image;
_instructions = new List <Instruction>();
while (accessor.Position < startOffset + codeSize)
{
OpCode opCode;
byte opByte = accessor.ReadByte();
if (opByte == 0xFE)
{
opByte = accessor.ReadByte();
opCode = OpCodes.OpCodeArray[256 + opByte];
}
else
{
opCode = OpCodes.OpCodeArray[opByte];
}
if (opCode == null)
{
throw new CodeModelException(string.Format(SR.AssemblyLoadError, module.Location));
}
object value;
switch (opCode.OperandType)
{
case OperandType.InlineBrTarget:
{
value = accessor.ReadInt32();
}
break;
case OperandType.InlineField:
{
int token = accessor.ReadInt32();
value = FieldReference.Load(module, token);
}
break;
case OperandType.InlineI:
{
value = accessor.ReadInt32();
}
break;
case OperandType.InlineI8:
{
value = accessor.ReadInt64();
}
break;
case OperandType.InlineMethod:
{
int token = accessor.ReadInt32();
value = MethodReference.Load(module, token);
}
break;
case OperandType.InlineR:
{
value = accessor.ReadDouble();
}
break;
case OperandType.InlineSig:
{
int token = accessor.ReadInt32();
if (MetadataToken.GetType(token) == MetadataTokenType.Signature)
{
int rid = MetadataToken.GetRID(token);
value = CallSite.LoadStandAloneSig(module, rid);
}
else
{
throw new CodeModelException(SR.MethodBodyBlobNotValid);
}
}
break;
case OperandType.InlineString:
{
// Token of a userdefined string, whose RID portion is actually an offset in the #US blob stream.
uint token = accessor.ReadUInt32();
int rid = (int)(token & 0x00ffffff);
value = image.GetUserString(rid);
}
break;
case OperandType.InlineSwitch:
{
int count = accessor.ReadInt32();
int[] targets = new int[count];
for (int i = 0; i < count; i++)
{
targets[i] = accessor.ReadInt32();
}
value = targets;
}
break;
case OperandType.InlineTok:
{
int token = accessor.ReadInt32();
int rid = MetadataToken.GetRID(token);
switch (MetadataToken.GetType(token))
{
case MetadataTokenType.Method:
value = MethodReference.LoadMethodDef(module, rid);
break;
case MetadataTokenType.MethodSpec:
value = GenericMethodReference.LoadMethodSpec(module, rid);
break;
case MetadataTokenType.MemberRef:
value = MethodReference.LoadMemberRef(module, rid);
break;
case MetadataTokenType.Field:
value = FieldReference.LoadFieldDef(module, rid);
break;
case MetadataTokenType.TypeDef:
value = TypeReference.LoadTypeDef(module, rid);
break;
case MetadataTokenType.TypeRef:
value = TypeReference.LoadTypeRef(module, rid);
break;
case MetadataTokenType.TypeSpec:
value = TypeSignature.LoadTypeSpec(module, rid);
break;
default:
throw new CodeModelException(SR.MethodBodyBlobNotValid);
}
}
break;
case OperandType.InlineType:
{
int token = accessor.ReadInt32();
value = TypeSignature.Load(module, token);
}
break;
case OperandType.InlineVar:
{
value = accessor.ReadInt16();
}
break;
case OperandType.ShortInlineBrTarget:
{
value = accessor.ReadSByte();
}
break;
case OperandType.ShortInlineI:
{
value = accessor.ReadByte();
}
break;
case OperandType.ShortInlineR:
{
value = accessor.ReadSingle();
}
break;
case OperandType.ShortInlineVar:
{
value = accessor.ReadByte();
}
break;
default:
{
value = null;
}
break;
}
_instructions.Add(new Instruction(opCode, value));
}
}
internal static Signature LoadMemberRef(Module module, int rid)
{
var image = module.Image;
var memberRef = image.MemberRefSignatures[rid - 1] as Signature;
if (memberRef != null)
{
return(memberRef);
}
MemberRefRow row;
image.GetMemberRef(rid, out row);
string name = image.GetString(row.Name);
// Owner
TypeSignature owner;
int classToken = MetadataToken.DecompressMemberRefParent(row.Class);
switch (MetadataToken.GetType(classToken))
{
case MetadataTokenType.ModuleRef:
{
// A ModuleRef token, if the member is defined, in another module of the same image,
// as a global function or variable.
var moduleRef = ModuleReference.LoadRef(module, MetadataToken.GetRID(classToken));
var typeRef = new TypeReference(CodeModelUtils.GlobalTypeName, null, moduleRef);
module.AddSignature(ref typeRef);
owner = typeRef;
}
break;
case MetadataTokenType.Method:
{
// A MethodDef token, when used to supply a call-site signature for a vararg method that is
// defined in this module. The Name shall match the Name in the corresponding MethodDef row.
// The Signature shall match the Signature in the target method definition.
int typeRID = image.GetTypeByMethod(MetadataToken.GetRID(classToken));
owner = TypeReference.LoadTypeDef(module, typeRID);
}
break;
default:
{
owner = TypeReference.Load(module, classToken);
}
break;
}
// Signature
using (var accessor = image.OpenBlob(row.Signature))
{
byte sigType = accessor.ReadByte();
if (sigType == Metadata.SignatureType.Field)
{
var fieldType = TypeSignature.Load(accessor, module);
memberRef = new FieldReference(name, fieldType, owner);
}
else
{
var callSite = CallSite.LoadCallSite(accessor, module, sigType);
memberRef = new MethodReference(name, owner, callSite);
}
}
module.AddSignature(ref memberRef);
image.MemberRefSignatures[rid - 1] = memberRef;
return(memberRef);
}
