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<div style='display: inline'> <h1 style='font-family: Malgun Gothic, Consolas; font-size: 20pt; color: #006699; text-align: center; font-weight: bold'>.NET Reflection을 대체할 System.Reflection.Metadata 소개</h1> <p> 초기 .NET 1.x 시절에는 .NET DLL/EXE에 구현된 타입 정보를 알아보기 위해 Assembly.Load 메서드를 사용했는데요, 이때 해당 어셈블리가 로드되면 잠기는 문제가 발생하지만 어셈블리를 내리려면 AppDomain이 함께 내려가야 한다는 부작용으로 인해 이후 Assembly.ReflectionOnlyLoad 메서드가 나옵니다.<br /> <br /> <pre style='margin: 10px 0px 10px 10px; padding: 10px 0px 10px 10px; background-color: #fbedbb; overflow: auto; font-family: Consolas, Verdana;' > Assembly.ReflectionOnlyLoad ; <a target='tab' href='https://learn.microsoft.com/en-us/dotnet/api/system.reflection.assembly.reflectiononlyload'>https://learn.microsoft.com/en-us/dotnet/api/system.reflection.assembly.reflectiononlyload</a> </pre> <br /> 이것은 어셈블리를 코드로써 로드하지 않고 메타데이터만 살펴볼 수 있도록 허용하므로 DLL/EXE가 잠기지 않는다는 장점이 있습니다. 그러던 것이, .NET Core가 나오면서 아예 순수 메타데이터 자체를 다룰 수 있도록 System.Reflection.Metadata가 나왔습니다. 이에 대해 검색해 보면 사용 예제가 하나 눈에 띄는데요,<br /> <br /> <pre style='margin: 10px 0px 10px 10px; padding: 10px 0px 10px 10px; background-color: #fbedbb; overflow: auto; font-family: Consolas, Verdana;' > Metadata Tools ; <a target='tab' href='https://github.com/dotnet/metadata-tools'>https://github.com/dotnet/metadata-tools</a> dotnet/metadata-tools ; <a target='tab' href='https://github.com/dotnet/metadata-tools/blob/master/src/Microsoft.Metadata.Visualizer/MetadataVisualizer.cs'>https://github.com/dotnet/metadata-tools/blob/master/src/Microsoft.Metadata.Visualizer/MetadataVisualizer.cs</a> </pre> <br /> 아쉽게도 .NET Framework 버전으로 나와 있는 데다 .NET Core에서는 일부 컴파일 오류가 발생해 직접 사용할 수가 없습니다. 그래서 ^^ 개인적으로 최대한 수정해 다음의 github 예제로 올렸습니다.<br /> <br /> <pre style='margin: 10px 0px 10px 10px; padding: 10px 0px 10px 10px; background-color: #fbedbb; overflow: auto; font-family: Consolas, Verdana;' > DotNetSamples/NetCore/Microsoft.Metadata.Visualizer/ ; <a target='tab' href='https://github.com/stjeong/DotNetSamples/tree/master/NetCore/Microsoft.Metadata.Visualizer'>https://github.com/stjeong/DotNetSamples/tree/master/NetCore/Microsoft.Metadata.Visualizer</a> </pre> <br /> 딱 하나, WriteForwarders를 못 옮겼는데요,<br /> <br /> <pre style='margin: 10px 0px 10px 10px; padding: 10px 0px 10px 10px; background-color: #fbedbb; overflow: auto; font-family: Consolas, Verdana;' > public void Visualize(int generation = -1) { this.reader = (generation >= 0) ? readers[generation] : readers.Last(); WriteModule(); WriteTypeRef(); WriteTypeDef(); WriteField(); WriteMethod(); WriteParam(); WriteMemberRef(); WriteConstant(); WriteCustomAttribute(); WriteDeclSecurity(); WriteStandAloneSig(); WriteEvent(); WriteProperty(); WriteMethodImpl(); WriteModuleRef(); WriteTypeSpec(); WriteEnCLog(); WriteEnCMap(); WriteAssembly(); WriteAssemblyRef(); WriteFile(); <span style='color: blue; font-weight: bold'>//WriteForwarders();</span> WriteExportedType(); WriteManifestResource(); WriteGenericParam(); WriteMethodSpec(); WriteGenericParamConstraint(); WriteUserStrings(); WriteStrings(); WriteBlobs(); WriteGuids(); } </pre> <br /> 나중에 기회 되면 손을 보겠습니다. ^^ 아니면 이 글을 읽으시는 분 중에 수정하셔서 PR 보내주셔도 좋겠고.<br /> <br /> <hr style='width: 50%' /><br /> <br /> 참고로 다음은 Microsoft.Metadata.Visualizer 예제 프로젝트를 이용해 스스로의 메타데이터를 출력한 결과입니다.<br /> <br /> <pre style='margin: 10px 0px 10px 10px; padding: 10px 0px 10px 10px; background-color: #fbedbb; overflow: auto; font-family: Consolas, Verdana;' > Microsoft.Metadata.Visualizer.dll ******************************************************************************** Module (0x00): ===================================================================================================================== Gen Name Mvid EncId EncBaseId ===================================================================================================================== 1: 0 'Microsoft.Metadata.Visualizer.dll' (#b10) {5592d697-bdc0-4859-aced-22e20a3efaee} (#1) nil nil TypeRef (0x01): =================================================================================================================================== Scope Name Namespace =================================================================================================================================== 1: 0x23000001 (AssemblyRef) 'CompilationRelaxationsAttribute' (#921) 'System.Runtime.CompilerServices' (#11bf) 2: 0x23000001 (AssemblyRef) 'RuntimeCompatibilityAttribute' (#987) 'System.Runtime.CompilerServices' (#11bf) 3: 0x23000001 (AssemblyRef) 'DebuggableAttribute' (#853) 'System.Diagnostics' (#1185) 4: 0x01000003 (TypeRef) 'DebuggingModes' (#1234) nil 5: 0x23000001 (AssemblyRef) 'TargetFrameworkAttribute' (#87e) 'System.Runtime.Versioning' (#a81) ...[생략]... 99: 0x23000002 (AssemblyRef) 'Stream' (#b46) 'System.IO' (#22a) 9a: 0x23000003 (AssemblyRef) 'PEReaderExtensions' (#1444) 'System.Reflection.Metadata' (#236) 9b: 0x23000001 (AssemblyRef) 'Enum' (#bbc) 'System' (#b89) 9c: 0x23000001 (AssemblyRef) 'StringComparison' (#f98) 'System' (#b89) TypeDef (0x02): ================================================================================================================================================================================================================================================================================================================= Name Namespace EnclosingType BaseType Interfaces Fields Methods Attributes ClassSize PackingSize ================================================================================================================================================================================================================================================================================================================= 1: '<Module>' (#221) nil nil nil nil nil nil 0 0 0 2: 'MetadataVisualizer' (#10e5) 'Microsoft.Metadata.Visualizer' (#10c7) nil 0x0100000c (TypeRef) nil 0x04000001-0x04000006 0x06000001-0x06000035 0x00100101 (AutoLayout, AnsiClass, Class, Public, Sealed, BeforeFieldInit) 0 0 3: 'Program' (#b6a) 'Microsoft.Metadata.Visualizer' (#10c7) nil 0x0100000c (TypeRef) nil nil 0x06000036-0x06000038 0x00100000 (AutoLayout, AnsiClass, Class, BeforeFieldInit) 0 0 4: 'TokenTypeComparer' (#1033) nil 0x02000002 (TypeDef) 0x0100000c (TypeRef) 0x09000001 0x04000007-0x04000007 0x06000039-0x0600003b 0x00100103 (AutoLayout, AnsiClass, Class, NestedPrivate, Sealed, BeforeFieldInit) 0 0 5: '<>c' (#272) nil 0x02000002 (TypeDef) 0x0100000c (TypeRef) nil 0x04000008-0x04000012 0x0600003c-0x06000047 0x00102103 (AutoLayout, AnsiClass, Class, NestedPrivate, Sealed, Serializable, BeforeFieldInit) 0 0 6: '<>c__DisplayClass29_0' (#fd) nil 0x02000002 (TypeDef) 0x0100000c (TypeRef) nil 0x04000013-0x04000014 0x06000048-0x06000049 0x00100103 (AutoLayout, AnsiClass, Class, NestedPrivate, Sealed, BeforeFieldInit) 0 0 7: '<>c__DisplayClass0_0' (#1c) nil 0x02000003 (TypeDef) 0x0100000c (TypeRef) nil 0x04000015-0x04000015 0x0600004a-0x0600004b 0x00100103 (AutoLayout, AnsiClass, Class, NestedPrivate, Sealed, BeforeFieldInit) 0 0 Field (0x04): ================================================================================================================================================ Name Signature Attributes Marshalling Offset RVA ================================================================================================================================================ 1: 'writer' (#108a) 06-12-35 (#8d5) 0x00000021 (Private, InitOnly) nil n/a 0 2: 'readers' (#152b) 06-15-12-39-01-12-3D (#8d9) 0x00000021 (Private, InitOnly) nil n/a 0 3: 'aggregator' (#111f) 06-12-41 (#8e1) 0x00000021 (Private, InitOnly) nil n/a 0 ...[생략]... 13: '<>4__this' (#140a) 06-12-08 (#95b) 0x00000006 (Public) nil n/a 0 14: 'displayTable' (#425) 06-02 (#95f) 0x00000006 (Public) nil n/a 0 15: 'args' (#1405) 06-1D-0E (#962) 0x00000006 (Public) nil n/a 0 Method (0x06, 0x1C): ======================================================================================================================================================================================================================================================================================================================= Name Signature RVA Parameters GenericParameters ImplAttributes Attributes ImportAttributes ImportName ImportModule ======================================================================================================================================================================================================================================================================================================================= 1: '.ctor' (#1144) 20-02-01-12-35-15-12-39-01-12-3D (#966) 0x00002050 0x08000001-0x08000002 nil 0x00001881 (PrivateScope, Private, HideBySig, SpecialName, RTSpecialName) 0 0 nil nil 2: '.ctor' (#1144) 20-02-01-12-3D-12-35 (#972) 0x000020DD 0x08000003-0x08000004 nil 0x00001886 (PrivateScope, Public, HideBySig, SpecialName, RTSpecialName) 0 0 nil nil 3: '.ctor' (#1144) 20-02-01-15-12-39-01-12-3D-12-35 (#97a) 0x000020F9 0x08000005-0x08000006 nil 0x00001886 (PrivateScope, Public, HideBySig, SpecialName, RTSpecialName) 0 0 nil nil 4: 'VisualizeAllGenerations' (#1470) 20-00-01 (#6) 0x00002108 nil nil 0x00000086 (PrivateScope, Public, HideBySig) 0 0 nil nil ...[생략]... 49: '<TokenList>b__0' (#11e) 20-01-0E-11-80-89 (#a55) 0x0000487A 0x08000033-0x08000033 nil 0x00000083 (PrivateScope, Assembly, HideBySig) 0 0 nil nil 4a: '.ctor' (#1144) 20-00-01 (#6) 0x00004893 nil nil 0x00001886 (PrivateScope, Public, HideBySig, SpecialName, RTSpecialName) 0 0 nil nil 4b: '<Main>b__0' (#113) 20-01-02-0E (#a5c) 0x0000489C 0x08000034-0x08000034 nil 0x00000083 (PrivateScope, Assembly, HideBySig) 0 0 nil nil Param (0x08): ===================================================================================== Name Seq# Attributes Marshalling ===================================================================================== 1: 'writer' (#108a) 1 0 nil 2: 'readers' (#152b) 2 0 nil ...[생략]... 31: 'h' (#afc) 1 0 nil 32: 'h' (#afc) 1 0 nil 33: 'h' (#afc) 1 0 nil 34: 'x' (#1781) 1 0 nil MemberRef (0x0a): ============================================================================================================================================================ Parent Name Signature ============================================================================================================================================================ 1: 0x01000001 (TypeRef) '.ctor' (#1144) 20-01-01-08 (#1) 2: 0x01000002 (TypeRef) '.ctor' (#1144) 20-00-01 (#6) 3: 0x01000003 (TypeRef) '.ctor' (#1144) 20-01-01-11-11 (#a) ...[생략]... 13d: 0x01000022 (TypeRef) 'op_Implicit' (#1633) 00-01-11-49-11-80-89 (#8b2) 13e: 0x01000072 (TypeRef) 'Equals' (#1414) 00-03-02-0E-0E-11-82-71 (#8ba) Constant (0x0b): ================================================================= Parent Type Value ================================================================= 1: 0x08000007 (Param) 0x00000008 (Int32) FF-FF-FF-FF (#8cc) 2: 0x0800001c (Param) 0x00000002 (Boolean) 01 (#8d1) 3: 0x08000021 (Param) 0x00000002 (Boolean) 00 (#8d3) CustomAttribute (0x0c): ========================================================================================================================================================================================================================= Parent Constructor Value ========================================================================================================================================================================================================================= 1: 0x20000001 (Assembly) 0x0a000001 (MemberRef) 01-00-08-00-00-00-00-00 (#a65) 2: 0x20000001 (Assembly) 0x0a000002 (MemberRef) 01-00-01-00-54-02-16-57-72-61-70-4E-6F-6E-45-78-63-65-70-74-69-6F-6E-54-68-72-6F-77-73-01 (#a6e) ...[생략]... d: 0x02000007 (TypeDef) 0x0a00000c (MemberRef) 01-00-00-00 (#b12) e: 0x08000008 (Param) 0x0a00000b (MemberRef) 01-00-00-00 (#b12) f: 0x08000009 (Param) 0x0a00000b (MemberRef) 01-00-00-00 (#b12) StandAloneSig (0x11): =================================================================================================== Signature =================================================================================================== 1: 07-02-02-15-12-4D-01-12-3D (#24) 2: 07-02-08-02 (#d7) 3: 07-01-02 (#ef) ...[생략]... 2b: 07-0A-12-1C-02-1D-0E-08-0E-12-81-B1-12-81-B5-12-3D-12-08-12-81-B9 (#80f) 2c: 07-02-11-5D-08 (#866) Property (0x15, 0x17, 0x18): =============================================================== Name Get Set Attributes =============================================================== 1: 'IsDelta' (#26a) 0x06000006 (MethodDef) nil 0 TypeSpec (0x1b): =============================================== Name =============================================== 1: 15-12-79-01-1E-00 (#15) 2: 15-12-81-9D-01-11-49 (#1c) ...[생략]... 19: 15-12-80-81-02-11-81-AD-11-49 (#726) 1a: 15-12-80-81-02-0E-02 (#826) Assembly (0x20): ====================================================================================================== Name Version Culture PublicKey Flags HashAlgorithm ====================================================================================================== 1: 'Microsoft.Metadata.Visualizer' (#10c7) 1.0.0.0 nil nil 0 0x00008004 (Sha1) AssemblyRef (0x23): ======================================================================================================= Name Version Culture PublicKeyOrToken Flags ======================================================================================================= 1: 'System.Runtime' (#780) 4.1.0.0 nil B0-3F-5F-7F-11-D5-0A-3A (#8c3) 0 2: 'System.IO' (#22a) 4.1.0.0 nil B0-3F-5F-7F-11-D5-0A-3A (#8c3) 0 3: 'System.Reflection.Metadata' (#236) 1.3.0.0 nil B0-3F-5F-7F-11-D5-0A-3A (#8c3) 0 ...[생략]... a: 'System.Reflection.Primitives' (#13b2) 4.0.0.0 nil B0-3F-5F-7F-11-D5-0A-3A (#8c3) 0 b: 'System.Console' (#74b) 4.0.0.0 nil B0-3F-5F-7F-11-D5-0A-3A (#8c3) 0 GenericParam (0x2a): ================================================================ Name Seq# Attributes TypeConstraints ================================================================ 1: 'TEntity' (#17fa) 0 0 nil 2: 'T' (#234) 0 0 0x2c000001-0x2c000001 3: 'THandle' (#48b) 0 0 nil MethodSpec (0x2b): =============================================================== Method Signature =============================================================== 1: 0x0a000010 (MemberRef) 0A-01-12-3D (#53) 2: 0x0a000015 (MemberRef) 0A-02-12-3D-15-11-45-01-11-49 (#b2) 3: 0x0a000016 (MemberRef) 0A-01-15-11-45-01-11-49 (#ce) 4: 0x0a00001a (MemberRef) 0A-01-12-3D (#53) 5: 0x0a00001a (MemberRef) 0A-01-1D-0E (#106) ...[생략]... 13: 0x06000016 (MethodDef) 0A-01-11-81-AD (#731) 14: 0x0a00012c (MemberRef) 0A-01-0E (#842) 15: 0x0a000016 (MemberRef) 0A-01-11-49 (#1cd) GenericParamConstraint (0x2c): ==================================================== Parent Type ==================================================== 1: 0x2a000002 (GenericParam) 0x1b000001 (TypeSpec) #US (size = 2816): 0: '' 1: '>>>' 9: '>>> Generation {0}:' 31: ' ' 37: 'x' 3b: ': ' ...[생략]... af2: ''' af6: '{' afa: '}' afe: '' aff: '' #String (size = 6160): 0: '' 1: '<>9__20_0' b: '<Literal>b__20_0' 1c: '<>c__DisplayClass0_0' 31: '<>9__21_0' 3b: '<Literal>b__21_0' ...[생략]... 17cc: 'Any' 17d0: 'EditAndContinueLogEntry' 17e8: 'WriteDeclSecurity' 17fa: 'TEntity' 1802: 'WriteProperty' #Blob (size = 2840): 0: 1: 20-01-01-08 6: 20-00-01 a: 20-01-01-11-11 10: 20-01-01-0E 15: 15-12-79-01-1E-00 1c: 15-12-81-9D-01-11-49 24: 07-02-02-15-12-4D-01-12-3D ...[생략]... afa: 01-00-07-31-2E-30-2E-30-2E-30-00-00 b07: 01-00-05-31-2E-30-2E-30-00-00 b12: 01-00-00-00 b17: #Guid (size = 16): 1: {5592d697-bdc0-4859-aced-22e20a3efaee} </pre> </p><br /> <br /><hr /><span style='color: Maroon'>[이 글에 대해서 여러분들과 의견을 공유하고 싶습니다. 틀리거나 미흡한 부분 또는 의문 사항이 있으시면 언제든 댓글 남겨주십시오.]</span> </div>
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