C# BlobBuilder.WriteByte方法代码示例

        public void CountClear()
        {
            var builder = new BlobBuilder();
            Assert.Equal(0, builder.Count);

            builder.WriteByte(1);
            Assert.Equal(1, builder.Count);

            builder.WriteInt32(4);
            Assert.Equal(5, builder.Count);

            builder.Clear();
            Assert.Equal(0, builder.Count);

            builder.WriteInt64(1);
            Assert.Equal(8, builder.Count);

            AssertEx.Equal(new byte[] { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, builder.ToArray());
        }

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

            writer.WriteUInt32(0x11223344);
            writer.WriteUInt16(0x5566);
            writer.WriteByte(0x77);
            writer.WriteUInt64(0x8899aabbccddeeff);
            writer.WriteInt32(-1);
            writer.WriteInt16(-2);
            writer.WriteSByte(-3);
            writer.WriteBoolean(true);
            writer.WriteBoolean(false);
            writer.WriteInt64(unchecked((long)0xfedcba0987654321));
            writer.WriteDateTime(new DateTime(0x1112223334445556));
            writer.WriteDecimal(102030405060.70m);
            writer.WriteDouble(double.NaN);
            writer.WriteSingle(float.NegativeInfinity);

            AssertEx.Equal(new byte[] 
            {
                0x44, 0x33, 0x22, 0x11,
                0x66, 0x55,
                0x77,
                0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88,
                0xff, 0xff, 0xff, 0xff, 
                0xfe, 0xff,
                0xfd,
                0x01,
                0x00,
                0x21, 0x43, 0x65, 0x87, 0x09, 0xBA, 0xDC, 0xFE,
                0x56, 0x55, 0x44, 0x34, 0x33, 0x22, 0x12, 0x11,
                0x02, 0xD6, 0xE0, 0x9A, 0x94, 0x47, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xFF,
                0x00, 0x00, 0x80, 0xFF
            }, writer.ToArray());
        }

//.........这里部分代码省略.........
                this.SerializeEncLogTable(writer);
            }

            if (metadataSizes.IsPresent(TableIndex.EncMap))
            {
                this.SerializeEncMapTable(writer);
            }

            if (metadataSizes.IsPresent(TableIndex.Assembly))
            {
                this.SerializeAssemblyTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.AssemblyRef))
            {
                this.SerializeAssemblyRefTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.File))
            {
                this.SerializeFileTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.ExportedType))
            {
                this.SerializeExportedTypeTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.ManifestResource))
            {
                this.SerializeManifestResourceTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.NestedClass))
            {
                this.SerializeNestedClassTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.GenericParam))
            {
                this.SerializeGenericParamTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.MethodSpec))
            {
                this.SerializeMethodSpecTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.GenericParamConstraint))
            {
                this.SerializeGenericParamConstraintTable(writer, metadataSizes);
            }

            // debug tables
            if (metadataSizes.IsPresent(TableIndex.Document))
            {
                this.SerializeDocumentTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.MethodDebugInformation))
            {
                this.SerializeMethodDebugInformationTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.LocalScope))
            {
                this.SerializeLocalScopeTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.LocalVariable))
            {
                this.SerializeLocalVariableTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.LocalConstant))
            {
                this.SerializeLocalConstantTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.ImportScope))
            {
                this.SerializeImportScopeTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.StateMachineMethod))
            {
                this.SerializeStateMachineMethodTable(writer, metadataSizes);
            }

            if (metadataSizes.IsPresent(TableIndex.CustomDebugInformation))
            {
                this.SerializeCustomDebugInformationTable(writer, metadataSizes);
            }

            writer.WriteByte(0);
            writer.Align(4);

            int endPosition = writer.Position;
            Debug.Assert(metadataSizes.MetadataTableStreamSize == endPosition - startPosition);
        }

        private static BlobBuilder SerializeRecord(byte kind, Action<BlobBuilder> data)
        {
            var cmw = new BlobBuilder();
            cmw.WriteByte(CDI.CdiVersion);
            cmw.WriteByte(kind);
            cmw.WriteByte(0);

            // alignment size (will be patched)
            int alignmentSizeAndLengthPosition = cmw.Position;
            cmw.WriteByte(0);

            // length (will be patched)
            cmw.WriteUInt32(0);

            data(cmw);

            int length = cmw.Position;
            int alignedLength = 4 * ((length + 3) / 4);
            byte alignmentSize = (byte)(alignedLength - length);

            for (int i = 0; i < alignmentSize; i++)
            {
                cmw.WriteByte(0);
            }

            cmw.SetPosition(alignmentSizeAndLengthPosition);
            cmw.WriteByte(alignmentSize);
            cmw.WriteUInt32((uint)alignedLength);

            cmw.SetPosition(length);
            return cmw;
        }

        public void WriteContentToStream_Errors()
        {
            var builder = new BlobBuilder(16);
            builder.WriteByte(1);

            Assert.Throws<ArgumentNullException>(() => builder.WriteContentTo((Stream)null));
            Assert.Throws<NotSupportedException>(() => builder.WriteContentTo(new MemoryStream(new byte[] { 1 }, writable: false)));
        }

        private static void WriteNameTable(Stream peStream)
        {
            var writer = new BlobBuilder(SizeOfNameTable);
            foreach (char ch in CorEntryPointDll)
            {
                writer.WriteByte((byte)ch);
            }

            writer.WriteByte(0);
            writer.WriteUInt16(0);
            Debug.Assert(writer.Length == SizeOfNameTable);

            writer.WriteTo(peStream);
        }

        private void WriteRuntimeStartupStub(Stream peStream, int importAddressTableRva)
        {
            var writer = new BlobBuilder(16);
            // entry point code, consisting of a jump indirect to _CorXXXMain
            if (_is32bit)
            {
                //emit 0's (nops) to pad the entry point code so that the target address is aligned on a 4 byte boundary.
                for (uint i = 0, n = (uint)(BitArithmeticUtilities.Align((uint)peStream.Position, 4) - peStream.Position); i < n; i++)
                {
                    writer.WriteByte(0);
                }

                writer.WriteUInt16(0);
                writer.WriteByte(0xff);
                writer.WriteByte(0x25); //4
                writer.WriteUInt32((uint)importAddressTableRva + (uint)_properties.BaseAddress); //8
            }
            else
            {
                //emit 0's (nops) to pad the entry point code so that the target address is aligned on a 8 byte boundary.
                for (uint i = 0, n = (uint)(BitArithmeticUtilities.Align((uint)peStream.Position, 8) - peStream.Position); i < n; i++)
                {
                    writer.WriteByte(0);
                }

                writer.WriteUInt32(0);
                writer.WriteUInt16(0);
                writer.WriteByte(0xff);
                writer.WriteByte(0x25); //8
                writer.WriteUInt64((ulong)importAddressTableRva + _properties.BaseAddress); //16
            }

            writer.WriteTo(peStream);
        }

        public void Pooled()
        {
            var builder1 = PooledBlobBuilder.GetInstance();
            var builder2 = PooledBlobBuilder.GetInstance();
            var builder3 = new BlobBuilder();

            builder1.WriteByte(1);
            builder2.WriteByte(2);
            builder3.WriteByte(3);

            // mix pooled with non-pooled
            builder1.LinkPrefix(builder3);

            builder1.Free();
            builder2.Free();
        }

        private static void WriteSectionHeader(SectionHeader sectionHeader, BlobBuilder writer)
        {
            if (sectionHeader.VirtualSize == 0)
            {
                return;
            }

            for (int j = 0, m = sectionHeader.Name.Length; j < 8; j++)
            {
                if (j < m)
                {
                    writer.WriteByte((byte)sectionHeader.Name[j]);
                }
                else
                {
                    writer.WriteByte(0);
                }
            }

            writer.WriteUInt32((uint)sectionHeader.VirtualSize);
            writer.WriteUInt32((uint)sectionHeader.RelativeVirtualAddress);
            writer.WriteUInt32((uint)sectionHeader.SizeOfRawData);
            writer.WriteUInt32((uint)sectionHeader.PointerToRawData);
            writer.WriteUInt32((uint)sectionHeader.PointerToRelocations);
            writer.WriteUInt32((uint)sectionHeader.PointerToLinenumbers);
            writer.WriteUInt16(sectionHeader.NumberOfRelocations);
            writer.WriteUInt16(sectionHeader.NumberOfLinenumbers);
            writer.WriteUInt32((uint)sectionHeader.Characteristics);
        }

        public void WriteContentToBlobBuilder()
        {
            var builder1 = new BlobBuilder(16);
            for (int i = 0; i < 20; i++)
            {
                builder1.WriteByte((byte)i);
            }

            var builder2 = new BlobBuilder(256);
            builder1.WriteContentTo(builder2);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13
            }, builder2.ToArray());

            builder1.WriteByte(0xff);

            builder1.WriteContentTo(builder2);
            AssertEx.Equal(new byte[]
            {
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
                0xff,
            }, builder2.ToArray());
        }

        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 void SerializeTablesHeader(BlobBuilder writer, MetadataSizes metadataSizes)
        {
            int startPosition = writer.Position;

            HeapSizeFlag heapSizes = 0;
            if (metadataSizes.StringIndexSize > 2)
            {
                heapSizes |= HeapSizeFlag.StringHeapLarge;
            }

            if (metadataSizes.GuidIndexSize > 2)
            {
                heapSizes |= HeapSizeFlag.GuidHeapLarge;
            }

            if (metadataSizes.BlobIndexSize > 2)
            {
                heapSizes |= HeapSizeFlag.BlobHeapLarge;
            }

            if (metadataSizes.IsMinimalDelta)
            {
                heapSizes |= (HeapSizeFlag.EnCDeltas | HeapSizeFlag.DeletedMarks);
            }

            ulong sortedDebugTables = metadataSizes.PresentTablesMask & MetadataSizes.SortedDebugTables;

            // Consider filtering out type system tables that are not present:
            ulong sortedTables = sortedDebugTables | (metadataSizes.IsStandaloneDebugMetadata ? 0UL : 0x16003301fa00);

            writer.WriteUInt32(0); // reserved
            writer.WriteByte(MetadataFormatMajorVersion);
            writer.WriteByte(MetadataFormatMinorVersion);
            writer.WriteByte((byte)heapSizes);
            writer.WriteByte(1); // reserved
            writer.WriteUInt64(metadataSizes.PresentTablesMask);
            writer.WriteUInt64(sortedTables);
            SerializeRowCounts(writer, metadataSizes.RowCounts, metadataSizes.PresentTablesMask);

            int endPosition = writer.Position;
            Debug.Assert(metadataSizes.CalculateTableStreamHeaderSize() == endPosition - startPosition);
        }

        private void SerializeConstantTable(BlobBuilder writer, MetadataSizes metadataSizes)
        {
            // Note: we can sort the table at this point since no other table can reference its rows via RowId or CodedIndex (which would need updating otherwise).
            var ordered = _constantTableNeedsSorting ? _constantTable.OrderBy((x, y) => (int)x.Parent - (int)y.Parent) : _constantTable;

            foreach (ConstantRow constant in ordered)
            {
                writer.WriteByte(constant.Type);
                writer.WriteByte(0);
                writer.WriteReference(constant.Parent, metadataSizes.HasConstantCodedIndexSize);
                writer.WriteReference((uint)_heaps.ResolveBlobIndex(constant.Value), metadataSizes.BlobIndexSize);
            }
        }

 private void SerializeReferenceToPreviousMethodWithUsingInfo(ArrayBuilder<BlobBuilder> customDebugInfo)
 {
     BlobBuilder cmw = new BlobBuilder(12);
     cmw.WriteByte(CDI.CdiVersion);
     cmw.WriteByte(CDI.CdiKindForwardInfo);
     cmw.Align(4);
     cmw.WriteUInt32(12);
     cmw.WriteUInt32((uint)_previousMethodTokenWithUsingInfo);
     customDebugInfo.Add(cmw);
 }

        private void SerializeNamespaceScopeMetadata(EmitContext context, IMethodBody methodBody, ArrayBuilder<BlobBuilder> customDebugInfo)
        {
            if (context.Module.GenerateVisualBasicStylePdb)
            {
                return;
            }

            if (ShouldForwardToPreviousMethodWithUsingInfo(context, methodBody))
            {
                Debug.Assert(!ReferenceEquals(_previousMethodBodyWithUsingInfo, methodBody));
                SerializeReferenceToPreviousMethodWithUsingInfo(customDebugInfo);
                return;
            }

            List<ushort> usingCounts = new List<ushort>();
            var cmw = new BlobBuilder();
            for (IImportScope scope = methodBody.ImportScope; scope != null; scope = scope.Parent)
            {
                usingCounts.Add((ushort)scope.GetUsedNamespaces().Length);
            }

            // ACASEY: This originally wrote (uint)12, (ushort)1, (ushort)0 in the
            // case where usingCounts was empty, but I'm not sure why.
            if (usingCounts.Count > 0)
            {
                uint streamLength;
                cmw.WriteByte(CDI.CdiVersion);
                cmw.WriteByte(CDI.CdiKindUsingInfo);
                cmw.Align(4);

                cmw.WriteUInt32(streamLength = BitArithmeticUtilities.Align((uint)usingCounts.Count * 2 + 10, 4));
                cmw.WriteUInt16((ushort)usingCounts.Count);
                foreach (ushort uc in usingCounts)
                {
                    cmw.WriteUInt16(uc);
                }

                cmw.Align(4);
                Debug.Assert(streamLength == cmw.Length);
                customDebugInfo.Add(cmw);
            }

            if (_methodBodyWithModuleInfo != null && !ReferenceEquals(_methodBodyWithModuleInfo, methodBody))
            {
                SerializeReferenceToMethodWithModuleInfo(customDebugInfo);
            }
        }