C# BlobBuilder.WriteUTF16方法代码示例

        public void WriteUTF16()
        {
            var writer = new BlobBuilder(4);

            writer.WriteUTF16("");
            writer.WriteUTF16("a");
            writer.WriteUTF16("");
            writer.WriteUTF16(new char[0]);

            writer.WriteUTF16(new char[] { '\ud800' });           // hi surrogate
            writer.WriteUTF16("\udc00");                          // lo surrogate
            writer.WriteUTF16("\ud800\udc00");                    // pair
            writer.WriteUTF16(new char[] { '\udc00', '\ud800' }); // lo + hi
            writer.WriteUTF16("\u1234");

            AssertEx.Equal(new byte[]
            {
                0x61, 0x00,
                0x00, 0xD8,
                0x00, 0xDC,
                0x00, 0xD8, 0x00, 0xDC,
                0x00, 0xDC, 0x00, 0xD8,
                0x34, 0x12
            }, writer.ToArray());
        }

        private void WriteDirectory(Directory directory, BlobBuilder writer, uint offset, uint level, uint sizeOfDirectoryTree, int virtualAddressBase, BlobBuilder dataWriter)
        {
            writer.WriteUInt32(0); // Characteristics
            writer.WriteUInt32(0); // Timestamp
            writer.WriteUInt32(0); // Version
            writer.WriteUInt16(directory.NumberOfNamedEntries);
            writer.WriteUInt16(directory.NumberOfIdEntries);
            uint n = (uint)directory.Entries.Count;
            uint k = offset + 16 + n * 8;
            for (int i = 0; i < n; i++)
            {
                int id;
                string name;
                uint nameOffset = (uint)dataWriter.Position + sizeOfDirectoryTree;
                uint directoryOffset = k;
                Directory subDir = directory.Entries[i] as Directory;
                if (subDir != null)
                {
                    id = subDir.ID;
                    name = subDir.Name;
                    if (level == 0)
                    {
                        k += SizeOfDirectory(subDir);
                    }
                    else
                    {
                        k += 16 + 8 * (uint)subDir.Entries.Count;
                    }
                }
                else
                {
                    //EDMAURER write out an IMAGE_RESOURCE_DATA_ENTRY followed
                    //immediately by the data that it refers to. This results
                    //in a layout different than that produced by pulling the resources
                    //from an OBJ. In that case all of the data bits of a resource are
                    //contiguous in .rsrc$02. After processing these will end up at
                    //the end of .rsrc following all of the directory
                    //info and IMAGE_RESOURCE_DATA_ENTRYs
                    IWin32Resource r = (IWin32Resource)directory.Entries[i];
                    id = level == 0 ? r.TypeId : level == 1 ? r.Id : (int)r.LanguageId;
                    name = level == 0 ? r.TypeName : level == 1 ? r.Name : null;
                    dataWriter.WriteUInt32((uint)(virtualAddressBase + sizeOfDirectoryTree + 16 + dataWriter.Position));
                    byte[] data = new List<byte>(r.Data).ToArray();
                    dataWriter.WriteUInt32((uint)data.Length);
                    dataWriter.WriteUInt32(r.CodePage);
                    dataWriter.WriteUInt32(0);
                    dataWriter.WriteBytes(data);
                    while ((dataWriter.Length % 4) != 0)
                    {
                        dataWriter.WriteByte(0);
                    }
                }

                if (id >= 0)
                {
                    writer.WriteInt32(id);
                }
                else
                {
                    if (name == null)
                    {
                        name = string.Empty;
                    }

                    writer.WriteUInt32(nameOffset | 0x80000000);
                    dataWriter.WriteUInt16((ushort)name.Length);
                    dataWriter.WriteUTF16(name);
                }

                if (subDir != null)
                {
                    writer.WriteUInt32(directoryOffset | 0x80000000);
                }
                else
                {
                    writer.WriteUInt32(nameOffset);
                }
            }

            k = offset + 16 + n * 8;
            for (int i = 0; i < n; i++)
            {
                Directory subDir = directory.Entries[i] as Directory;
                if (subDir != null)
                {
                    this.WriteDirectory(subDir, writer, k, level + 1, sizeOfDirectoryTree, virtualAddressBase, dataWriter);
                    if (level == 0)
                    {
                        k += SizeOfDirectory(subDir);
                    }
                    else
                    {
                        k += 16 + 8 * (uint)subDir.Entries.Count;
                    }
                }
            }
        }

        public unsafe void Write_Errors()
        {
            var builder = new BlobBuilder(16);
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF16((char[])null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF16((string)null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF8(null, allowUnpairedSurrogates: true));
            Assert.Throws<ArgumentNullException>(() => builder.WriteUTF8(null, allowUnpairedSurrogates: true));
            Assert.Throws<ArgumentNullException>(() => builder.TryWriteBytes((Stream)null, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(null, 0, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes((byte*)null, 0));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(default(ImmutableArray<byte>)));
            Assert.Throws<ArgumentNullException>(() => builder.WriteBytes(default(ImmutableArray<byte>), 0, 0));

            var bw = default(BlobWriter);
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo(ref bw));
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((Stream)null));
            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((BlobBuilder)null));

            Assert.Throws<ArgumentOutOfRangeException>(() => builder.TryWriteBytes(new MemoryStream(), -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(0, -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 1, 0));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 0, 1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(new byte[] { }, 0, -1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 1, 0));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 0, 1));
            Assert.Throws<ArgumentOutOfRangeException>(() => builder.WriteBytes(ImmutableArray<byte>.Empty, 1, -1));
        }

        public void Link()
        {
            var builder1 = new BlobBuilder(16);
            builder1.WriteByte(1);

            var builder2 = new BlobBuilder(16);
            builder2.WriteByte(2);

            var builder3 = new BlobBuilder(16);
            builder3.WriteByte(3);

            var builder4 = new BlobBuilder(16);
            builder4.WriteByte(4);

            var builder5 = new BlobBuilder(16);
            builder5.WriteByte(5);

            builder2.LinkPrefix(builder1);
            AssertEx.Equal(new byte[] { 1, 2 }, builder2.ToArray());
            Assert.Throws<InvalidOperationException>(() => builder1.ToArray());
            Assert.Throws<InvalidOperationException>(() => builder2.LinkPrefix(builder1));
            Assert.Throws<InvalidOperationException>(() => builder1.WriteByte(0xff));
            Assert.Throws<InvalidOperationException>(() => builder1.WriteBytes(1, 10));
            Assert.Throws<InvalidOperationException>(() => builder1.WriteBytes(new byte[] { 1 }));
            Assert.Throws<InvalidOperationException>(() => builder1.ReserveBytes(1));
            Assert.Throws<InvalidOperationException>(() => builder1.GetBlobs());
            Assert.Throws<InvalidOperationException>(() => builder1.ContentEquals(builder1));
            Assert.Throws<InvalidOperationException>(() => builder1.WriteUTF16("str"));
            Assert.Throws<InvalidOperationException>(() => builder1.WriteUTF8("str", allowUnpairedSurrogates: false));

            builder2.LinkSuffix(builder3);
            AssertEx.Equal(new byte[] { 1, 2, 3 }, builder2.ToArray());
            Assert.Throws<InvalidOperationException>(() => builder3.LinkPrefix(builder5));

            builder2.LinkPrefix(builder4);
            AssertEx.Equal(new byte[] { 4, 1, 2, 3 }, builder2.ToArray());
            Assert.Throws<InvalidOperationException>(() => builder4.LinkPrefix(builder5));

            builder2.LinkSuffix(builder5);
            AssertEx.Equal(new byte[] { 4, 1, 2, 3, 5 }, builder2.ToArray());
        }

        private static void SerializeDynamicLocalInfo(IMethodBody methodBody, ArrayBuilder<BlobBuilder> customDebugInfo)
        {
            if (!methodBody.HasDynamicLocalVariables)
            {
                return; //There are no dynamic locals
            }

            var dynamicLocals = ArrayBuilder<ILocalDefinition>.GetInstance();

            foreach (ILocalDefinition local in methodBody.LocalVariables)
            {
                if (local.IsDynamic)
                {
                    dynamicLocals.Add(local);
                }
            }

            int dynamicVariableCount = dynamicLocals.Count;

            foreach (var currentScope in methodBody.LocalScopes)
            {
                foreach (var localConstant in currentScope.Constants)
                {
                    if (localConstant.IsDynamic)
                    {
                        dynamicLocals.Add(localConstant);
                    }
                }
            }

            Debug.Assert(dynamicLocals.Any()); // There must be at least one dynamic local if this point is reached

            const int blobSize = 200;//DynamicAttribute - 64, DynamicAttributeLength - 4, SlotIndex -4, IdentifierName - 128
            var cmw = new BlobBuilder();
            cmw.WriteByte(CDI.CdiVersion);
            cmw.WriteByte(CDI.CdiKindDynamicLocals);
            cmw.Align(4);
            // size = Version,Kind + size + cBuckets + (dynamicCount * sizeOf(Local Blob))
            cmw.WriteUInt32(4 + 4 + 4 + (uint)dynamicLocals.Count * blobSize);//Size of the Dynamic Block
            cmw.WriteUInt32((uint)dynamicLocals.Count);

            int localIndex = 0;
            foreach (ILocalDefinition local in dynamicLocals)
            {
                if (local.Name.Length > 63)//Ignore and push empty information
                {
                    cmw.WriteBytes(0, blobSize);
                    continue;
                }

                var dynamicTransformFlags = local.DynamicTransformFlags;
                if (!dynamicTransformFlags.IsDefault && dynamicTransformFlags.Length <= 64)
                {
                    byte[] flag = new byte[64];
                    for (int k = 0; k < dynamicTransformFlags.Length; k++)
                    {
                        if ((bool)dynamicTransformFlags[k].Value)
                        {
                            flag[k] = 1;
                        }
                    }
                    cmw.WriteBytes(flag); //Written Flag
                    cmw.WriteUInt32((uint)dynamicTransformFlags.Length); //Written Length
                }
                else
                {
                    cmw.WriteBytes(0, 68); //Empty flag array and size.
                }

                if (localIndex < dynamicVariableCount)
                {
                    // Dynamic variable
                    cmw.WriteUInt32((uint)local.SlotIndex);
                }
                else
                {
                    // Dynamic constant
                    cmw.WriteUInt32(0);
                }

                char[] localName = new char[64];
                local.Name.CopyTo(0, localName, 0, local.Name.Length);
                cmw.WriteUTF16(localName);

                localIndex++;
            }

            dynamicLocals.Free();
            customDebugInfo.Add(cmw);
        }

 private static void SerializeReferenceToIteratorClass(string iteratorClassName, ArrayBuilder<BlobBuilder> customDebugInfo)
 {
     if (iteratorClassName == null) return;
     var cmw = new BlobBuilder();
     cmw.WriteByte(CDI.CdiVersion);
     cmw.WriteByte(CDI.CdiKindForwardIterator);
     cmw.Align(4);
     uint length = 10 + (uint)iteratorClassName.Length * 2;
     if ((length & 3) != 0) length += 4 - (length & 3);
     cmw.WriteUInt32(length);
     cmw.WriteUTF16(iteratorClassName);
     cmw.WriteInt16(0);
     cmw.Align(4);
     Debug.Assert(cmw.Position == length);
     customDebugInfo.Add(cmw);
 }

        internal static void WriteConstant(BlobBuilder writer, object value)
        {
            if (value == null)
            {
                // The encoding of Type for the nullref value for FieldInit is ELEMENT_TYPE_CLASS with a Value of a 32-bit.
                writer.WriteUInt32(0);
                return;
            }

            var type = value.GetType();
            if (type.GetTypeInfo().IsEnum)
            {
                type = Enum.GetUnderlyingType(type);
            }

            if (type == typeof(bool))
            {
                writer.WriteBoolean((bool)value);
            }
            else if (type == typeof(int))
            {
                writer.WriteInt32((int)value);
            }
            else if (type == typeof(string))
            {
                writer.WriteUTF16((string)value);
            }
            else if (type == typeof(byte))
            {
                writer.WriteByte((byte)value);
            }
            else if (type == typeof(char))
            {
                writer.WriteUInt16((char)value);
            }
            else if (type == typeof(double))
            {
                writer.WriteDouble((double)value);
            }
            else if (type == typeof(short))
            {
                writer.WriteInt16((short)value);
            }
            else if (type == typeof(long))
            {
                writer.WriteInt64((long)value);
            }
            else if (type == typeof(sbyte))
            {
                writer.WriteSByte((sbyte)value);
            }
            else if (type == typeof(float))
            {
                writer.WriteSingle((float)value);
            }
            else if (type == typeof(ushort))
            {
                writer.WriteUInt16((ushort)value);
            }
            else if (type == typeof(uint))
            {
                writer.WriteUInt32((uint)value);
            }
            else if (type == typeof(ulong))
            {
                writer.WriteUInt64((ulong)value);
            }
            else
            {
                // TODO: message
                throw new ArgumentException();
            }
        }