Mono.Cecil.Cil.CodeReader.PatchRawCode C# (CSharp) Method

        void PatchRawCode(ByteBuffer buffer, int code_size, CodeWriter writer)
        {
            var metadata = writer.metadata;
            buffer.WriteBytes (ReadBytes (code_size));
            var end = buffer.position;
            buffer.position -= code_size;

            while (buffer.position < end) {
                OpCode opcode;
                var il_opcode = buffer.ReadByte ();
                if (il_opcode != 0xfe) {
                    opcode = OpCodes.OneByteOpCode [il_opcode];
                } else {
                    var il_opcode2 = buffer.ReadByte ();
                    opcode = OpCodes.TwoBytesOpCode [il_opcode2];
                }

                switch (opcode.OperandType) {
                case OperandType.ShortInlineI:
                case OperandType.ShortInlineBrTarget:
                case OperandType.ShortInlineVar:
                case OperandType.ShortInlineArg:
                    buffer.position += 1;
                    break;
                case OperandType.InlineVar:
                case OperandType.InlineArg:
                    buffer.position += 2;
                    break;
                case OperandType.InlineBrTarget:
                case OperandType.ShortInlineR:
                case OperandType.InlineI:
                    buffer.position += 4;
                    break;
                case OperandType.InlineI8:
                case OperandType.InlineR:
                    buffer.position += 8;
                    break;
                case OperandType.InlineSwitch:
                    var length = buffer.ReadInt32 ();
                    buffer.position += length * 4;
                    break;
                case OperandType.InlineString:
                    var @string = GetString (new MetadataToken (buffer.ReadUInt32 ()));
                    buffer.position -= 4;
                    buffer.WriteUInt32 (
                        new MetadataToken (
                            TokenType.String,
                            metadata.user_string_heap.GetStringIndex (@string)).ToUInt32 ());
                    break;
                case OperandType.InlineSig:
                    var call_site = GetCallSite (new MetadataToken (buffer.ReadUInt32 ()));
                    buffer.position -= 4;
                    buffer.WriteUInt32 (writer.GetStandAloneSignature (call_site).ToUInt32 ());
                    break;
                case OperandType.InlineTok:
                case OperandType.InlineType:
                case OperandType.InlineMethod:
                case OperandType.InlineField:
                    var provider = reader.LookupToken (new MetadataToken (buffer.ReadUInt32 ()));
                    buffer.position -= 4;
                    buffer.WriteUInt32 (metadata.LookupToken (provider).ToUInt32 ());
                    break;
                }
            }
        }