public static ConstantPoolEntry FromMemory(ref IntPtr pointer) { ConstantType type = (ConstantType)Marshal.ReadByte(pointer); switch (type) { case ConstantType.Utf8: ushort length = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); unsafe { var result = new ConstantUtf8(ModifiedUTF8Encoding.GetString((byte*)(pointer + 3), length)); pointer += 3 + length; return result; } case ConstantType.Integer: { var result = new ConstantInteger((int)ByteSwap((uint)Marshal.ReadInt32(pointer, 1))); pointer += 5; return result; } case ConstantType.Float: { var result = new ConstantFloat(ValueHelper.Int32BitsToSingle((int)ByteSwap((uint)Marshal.ReadInt32(pointer, 1)))); pointer += 5; return result; } case ConstantType.Long: { var result = new ConstantLong((long)ByteSwap((ulong)Marshal.ReadInt64(pointer, 1))); pointer += 9; return result; } case ConstantType.Double: { var result = new ConstantDouble(BitConverter.Int64BitsToDouble((long)ByteSwap((ulong)Marshal.ReadInt64(pointer, 1)))); pointer += 9; return result; } case ConstantType.Class: { ushort nameIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantClass(nameIndex); pointer += 3; return result; } case ConstantType.String: { ushort stringIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantString(stringIndex); pointer += 3; return result; } case ConstantType.FieldReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantFieldReference(classIndex, nameAndTypeIndex); pointer += 5; return result; } case ConstantType.MethodReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantMethodReference(classIndex, nameAndTypeIndex); pointer += 5; return result; } case ConstantType.InterfaceMethodReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantInterfaceMethodReference(classIndex, nameAndTypeIndex); pointer += 5; return result; } case ConstantType.NameAndType: { ushort nameIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort descriptorIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantNameAndType(nameIndex, descriptorIndex); pointer += 5; return result; } case ConstantType.MethodHandle: { MethodHandleKind referenceKind = (MethodHandleKind)Marshal.ReadByte(pointer, 1); ushort referenceIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 2)); var result = new ConstantMethodHandle(referenceKind, referenceIndex); pointer += 4; return result; } case ConstantType.MethodType: { ushort descriptorIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantMethodType(descriptorIndex); pointer += 3; return result; } case ConstantType.InvokeDynamic: { ushort bootstrapMethodAttrIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantInvokeDynamic(bootstrapMethodAttrIndex, nameAndTypeIndex); pointer += 5; return result; } case ConstantType.Invalid: default: throw new ArgumentException(string.Format("Unknown constant type: {0}", type)); } }
public static ConstantPoolEntry FromMemory(ref IntPtr pointer) { ConstantType type = (ConstantType)Marshal.ReadByte(pointer); switch (type) { case ConstantType.Utf8: ushort length = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); unsafe { var result = new ConstantUtf8(ModifiedUTF8Encoding.GetString((byte *)(pointer + 3), length)); pointer += 3 + length; return(result); } case ConstantType.Integer: { var result = new ConstantInteger((int)ByteSwap((uint)Marshal.ReadInt32(pointer, 1))); pointer += 5; return(result); } case ConstantType.Float: { var result = new ConstantFloat(ValueHelper.Int32BitsToSingle((int)ByteSwap((uint)Marshal.ReadInt32(pointer, 1)))); pointer += 5; return(result); } case ConstantType.Long: { var result = new ConstantLong((long)ByteSwap((ulong)Marshal.ReadInt64(pointer, 1))); pointer += 9; return(result); } case ConstantType.Double: { var result = new ConstantDouble(BitConverter.Int64BitsToDouble((long)ByteSwap((ulong)Marshal.ReadInt64(pointer, 1)))); pointer += 9; return(result); } case ConstantType.Class: { ushort nameIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantClass(nameIndex); pointer += 3; return(result); } case ConstantType.String: { ushort stringIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantString(stringIndex); pointer += 3; return(result); } case ConstantType.FieldReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantFieldReference(classIndex, nameAndTypeIndex); pointer += 5; return(result); } case ConstantType.MethodReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantMethodReference(classIndex, nameAndTypeIndex); pointer += 5; return(result); } case ConstantType.InterfaceMethodReference: { ushort classIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantInterfaceMethodReference(classIndex, nameAndTypeIndex); pointer += 5; return(result); } case ConstantType.NameAndType: { ushort nameIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort descriptorIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantNameAndType(nameIndex, descriptorIndex); pointer += 5; return(result); } case ConstantType.MethodHandle: { MethodHandleKind referenceKind = (MethodHandleKind)Marshal.ReadByte(pointer, 1); ushort referenceIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 2)); var result = new ConstantMethodHandle(referenceKind, referenceIndex); pointer += 4; return(result); } case ConstantType.MethodType: { ushort descriptorIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); var result = new ConstantMethodType(descriptorIndex); pointer += 3; return(result); } case ConstantType.InvokeDynamic: { ushort bootstrapMethodAttrIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 1)); ushort nameAndTypeIndex = ByteSwap((ushort)Marshal.ReadInt16(pointer, 3)); var result = new ConstantInvokeDynamic(bootstrapMethodAttrIndex, nameAndTypeIndex); pointer += 5; return(result); } case ConstantType.Invalid: default: throw new ArgumentException(string.Format("Unknown constant type: {0}", type)); } }