public DeclareLocal ( |
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localType | ||
리턴 |
/// <summary> /// Emits 'for' statement on current IL stream. /// </summary> /// <param name="il">IL generator to be emitted to.</param> /// <param name="count">'count' local variable which is <see cref="Int32"/> type and holds maximum loop count.</param> /// <param name="bodyEmitter">Delegate to emit for statement body.</param> public static void EmitFor( TracingILGenerator il, LocalBuilder count, Action<TracingILGenerator, LocalBuilder> bodyEmitter ) { Contract.Requires( il != null ); Contract.Requires( count != null ); Contract.Requires( bodyEmitter != null ); var i = il.DeclareLocal( typeof( int ), "i" ); il.EmitLdc_I4_0(); il.EmitAnyStloc( i ); var forCond = il.DefineLabel( "FOR_COND" ); il.EmitBr( forCond ); var body = il.DefineLabel( "BODY" ); il.MarkLabel( body ); bodyEmitter( il, i ); // increment il.EmitAnyLdloc( i ); il.EmitLdc_I4_1(); il.EmitAdd(); il.EmitAnyStloc( i ); // cond il.MarkLabel( forCond ); il.EmitAnyLdloc( i ); il.EmitAnyLdloc( count ); il.EmitBlt( body ); }
public override void Evaluate( TracingILGenerator il ) { if ( this._isLocal && this._index < 0 ) { il.TraceWriteLine( "// Eval->: {0}", this ); this._index = il.DeclareLocal( this.ContextType.ResolveRuntimeType(), this._name ).LocalIndex; il.TraceWriteLine( "// ->Eval: {0}", this ); } }
public static void EmitConstruction( TracingILGenerator il, LocalBuilder target, Action<TracingILGenerator> initialCountLoadingEmitter ) { Contract.Requires( il != null ); Contract.Requires( target != null ); Contract.Requires( initialCountLoadingEmitter != null ); // TODO: For collection, supports .ctor(IEnumerable<> other) if ( target.LocalType.IsArray ) { initialCountLoadingEmitter( il ); il.EmitNewarr( target.LocalType.GetElementType() ); il.EmitAnyStloc( target ); return; } ConstructorInfo ctor = target.LocalType.GetConstructor( _ctor_Int32_ParameterTypes ); if ( ctor != null && initialCountLoadingEmitter != null && typeof( IEnumerable ).IsAssignableFrom( target.LocalType ) ) { if ( target.LocalType.IsValueType ) { // Same as general method call var capacity = il.DeclareLocal( typeof( int ), "capacity" ); initialCountLoadingEmitter( il ); il.EmitAnyStloc( capacity ); il.EmitAnyLdloca( target ); il.EmitAnyLdloc( capacity ); il.EmitCallConstructor( ctor ); } else { initialCountLoadingEmitter( il ); il.EmitNewobj( ctor ); il.EmitAnyStloc( target ); } return; } if ( target.LocalType.IsValueType ) { // ValueType instance has been initialized by the runtime. return; } ctor = target.LocalType.GetConstructor( Type.EmptyTypes ); if ( ctor == null ) { throw SerializationExceptions.NewTargetDoesNotHavePublicDefaultConstructorNorInitialCapacity( target.LocalType ); } il.EmitNewobj( ctor ); il.EmitAnyStloc( target ); }
/// <summary> /// Emits 'foreach' statement on the IL stream. /// </summary> /// <param name="il">IL generator to be emitted to.</param> /// <param name="traits"><see cref="CollectionTraits"/> which contains traits of the iterating collection.</param> /// <param name="collection">'collection' argument index.</param> /// <param name="bodyEmitter">Delegate to emit body statement.</param> public static void EmitForEach( TracingILGenerator il, CollectionTraits traits, LocalBuilder collection, Action<TracingILGenerator, Action> bodyEmitter ) { Contract.Requires( il != null ); Contract.Requires( collection != null ); Contract.Requires( bodyEmitter != null ); var enumerator = il.DeclareLocal( traits.GetEnumeratorMethod.ReturnType, "enumerator" ); // gets enumerator if ( collection.LocalType.IsValueType ) { il.EmitAnyLdloca( collection ); } else { il.EmitAnyLdloc( collection ); } il.EmitAnyCall( traits.GetEnumeratorMethod ); il.EmitAnyStloc( enumerator ); if ( typeof( IDisposable ).IsAssignableFrom( traits.GetEnumeratorMethod.ReturnType ) ) { il.BeginExceptionBlock(); } var startLoop = il.DefineLabel( "START_LOOP" ); il.MarkLabel( startLoop ); var endLoop = il.DefineLabel( "END_LOOP" ); var enumeratorType = traits.GetEnumeratorMethod.ReturnType; MethodInfo moveNextMethod = enumeratorType.GetMethod( "MoveNext", Type.EmptyTypes ); PropertyInfo currentProperty = traits.GetEnumeratorMethod.ReturnType.GetProperty( "Current" ); if ( moveNextMethod == null ) { moveNextMethod = Metadata._IEnumerator.MoveNext; } if ( currentProperty == null ) { if ( enumeratorType == typeof( IDictionaryEnumerator ) ) { currentProperty = Metadata._IDictionaryEnumerator.Current; } else if ( enumeratorType.IsInterface ) { if ( enumeratorType.IsGenericType && enumeratorType.GetGenericTypeDefinition() == typeof( IEnumerator<> ) ) { currentProperty = typeof( IEnumerator<> ).MakeGenericType( traits.ElementType ).GetProperty( "Current" ); } else { currentProperty = Metadata._IEnumerator.Current; } } } Contract.Assert( currentProperty != null, enumeratorType.ToString() ); // iterates if ( traits.GetEnumeratorMethod.ReturnType.IsValueType ) { il.EmitAnyLdloca( enumerator ); } else { il.EmitAnyLdloc( enumerator ); } il.EmitAnyCall( moveNextMethod ); il.EmitBrfalse( endLoop ); bodyEmitter( il, () => { if ( traits.GetEnumeratorMethod.ReturnType.IsValueType ) { il.EmitAnyLdloca( enumerator ); } else { il.EmitAnyLdloc( enumerator ); } il.EmitGetProperty( currentProperty ); } ); il.EmitBr( startLoop ); il.MarkLabel( endLoop ); // Dispose if ( typeof( IDisposable ).IsAssignableFrom( traits.GetEnumeratorMethod.ReturnType ) ) { il.BeginFinallyBlock(); if ( traits.GetEnumeratorMethod.ReturnType.IsValueType ) { var disposeMethod = traits.GetEnumeratorMethod.ReturnType.GetMethod( "Dispose" ); if ( disposeMethod != null && disposeMethod.GetParameters().Length == 0 && disposeMethod.ReturnType == typeof( void ) ) { il.EmitAnyLdloca( enumerator ); il.EmitAnyCall( disposeMethod ); } else { il.EmitAnyLdloc( enumerator ); il.EmitBox( traits.GetEnumeratorMethod.ReturnType ); il.EmitAnyCall( Metadata._IDisposable.Dispose ); } } else { il.EmitAnyLdloc( enumerator ); il.EmitAnyCall( Metadata._IDisposable.Dispose ); } il.EndExceptionBlock(); } }
public static void EmitDeserializeCollectionValue( SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder target, MemberInfo member, Type memberType, NilImplication nilImplication ) { Contract.Requires( emitter != null ); Contract.Requires( il != null ); Contract.Requires( unpackerArgumentIndex >= 0 ); Contract.Requires( target != null ); Contract.Requires( member != null ); Contract.Requires( memberType != null ); var endOfDeserialization = il.DefineLabel( "END_OF_DESERIALIZATION" ); switch ( nilImplication ) { case NilImplication.MemberDefault: { /* * if( unpacker.Data.Value.IsNil ) * { * // Skip current. * goto END_OF_DESERIALIZATION; * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); il.EmitBrtrue( endOfDeserialization ); break; } case NilImplication.Null: case NilImplication.Prohibit: { /* * // for Prohibit * if( unpacker.Data.Value.IsNil ) * { * throw SerializationEceptions.NewProhibitNullException( "..." ); * } * * // for Null, and * if( unpacker.Data.Value.IsNil ) * { * throw SerializationEceptions.NewReadOnlyMemberItemsMustNotBeNullMethod( "..." ); * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); var endIf0 = il.DefineLabel( "END_IF0" ); il.EmitBrfalse_S( endIf0 ); il.EmitLdstr( member.Name ); if ( nilImplication == NilImplication.Prohibit ) { il.EmitAnyCall( SerializationExceptions.NewNullIsProhibitedMethod ); } else { // Because result member is readonly collection, so the member will not be null if packed value was nil. il.EmitAnyCall( SerializationExceptions.NewReadOnlyMemberItemsMustNotBeNullMethod ); } il.EmitThrow(); il.MarkLabel( endIf0 ); break; } } /* * if( !unpacker.IsArrayHeader && !unpacker.IsMapHeader ) * { * throw new SerializatonException( "Cannot deserialize..." ); * } * * using( var subtreeUnpacker = unpacker.ReadSubtree() ) * { * GET_SERIALIZER.UnpackTo( unpacker, result ) ) * } * * END_OF_DESERIALIZATION: */ var endIf = il.DefineLabel( "THEN" ); var serializerGetter = emitter.RegisterSerializer( memberType ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsArrayHeader ); il.EmitBrtrue_S( endIf ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsMapHeader ); il.EmitBrtrue_S( endIf ); // else il.EmitLdstr( member.Name ); il.EmitAnyCall( SerializationExceptions.NewStreamDoesNotContainCollectionForMemberMethod ); il.EmitThrow(); // then var subtreeUnpacker = il.DeclareLocal( typeof( Unpacker ), "subtreeUnpacker" ); il.MarkLabel( endIf ); EmitUnpackerBeginReadSubtree( il, unpackerArgumentIndex, subtreeUnpacker ); serializerGetter( il, 0 ); il.EmitAnyLdloc( subtreeUnpacker ); il.EmitAnyLdloc( target ); Emittion.EmitLoadValue( il, member ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( memberType ).GetMethod( "UnpackTo", new[] { typeof( Unpacker ), memberType } ) ); EmitUnpackerEndReadSubtree( il, subtreeUnpacker ); il.MarkLabel( endOfDeserialization ); }
public static void EmitNilImplication( TracingILGenerator il, int unpackerArgumentIndex, string memberName, NilImplication nilImplication, Label endOfDeserialization ) { switch ( nilImplication ) { case NilImplication.MemberDefault: { /* * if( unpacker.Data.Value.IsNil ) * { * // Skip current. * goto END_OF_DESERIALIZATION; * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); il.EmitBrtrue( endOfDeserialization ); break; } case NilImplication.Prohibit: { /* * if( unpacker.Data.Value.IsNil ) * { * throw SerializationEceptions.NewProhibitNullException( "..." ); * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); var endIf0 = il.DefineLabel( "END_IF0" ); il.EmitBrfalse_S( endIf0 ); il.EmitLdstr( memberName ); il.EmitAnyCall( SerializationExceptions.NewNullIsProhibitedMethod ); il.EmitThrow(); il.MarkLabel( endIf0 ); break; } } }
public static void EmitDeserializeValue( SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder value, NilImplication nilImplication, Action<TracingILGenerator, int> customUnpackerReading ) { Contract.Requires( emitter != null ); Contract.Requires( il != null ); Contract.Requires( unpackerArgumentIndex >= 0 ); Contract.Requires( value != null ); if ( customUnpackerReading != null ) { customUnpackerReading( il, unpackerArgumentIndex ); } var endOfDeserialization = il.DefineLabel( "END_OF_DESERIALIZATION" ); /* * * if( !unpacker.IsArrayHeader && !unpacker.IsMapHeader ) * { * valueN = GET_SERIALIZER.UnpackFrom( unpacker ); * } * else * { * using( var subtreeUnpacker = unpacker.ReadSubtree ) * { * valueN = GET_SERIALIZER.UnpackFrom( unpacker ); * } * } * * isValueNUnpacked = true; * END_OF_DESERIALIZATION: */ var then = il.DefineLabel( "THEN" ); var endIf = il.DefineLabel( "END_IF" ); var serializerGetter = emitter.RegisterSerializer( value.LocalType ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsArrayHeader ); il.EmitBrtrue_S( then ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsMapHeader ); il.EmitBrtrue_S( then ); // else serializerGetter( il, 0 ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( value.LocalType ).GetMethod( "UnpackFrom" ) ); il.EmitAnyStloc( value ); il.EmitBr_S( endIf ); // then var subtreeUnpacker = il.DeclareLocal( typeof( Unpacker ), "subtreeUnpacker" ); il.MarkLabel( then ); EmitUnpackerBeginReadSubtree( il, unpackerArgumentIndex, subtreeUnpacker ); serializerGetter( il, 0 ); il.EmitAnyLdloc( subtreeUnpacker ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( value.LocalType ).GetMethod( "UnpackFrom" ) ); il.EmitAnyStloc( value ); EmitUnpackerEndReadSubtree( il, subtreeUnpacker ); il.MarkLabel( endIf ); il.MarkLabel( endOfDeserialization ); }
public static void EmitSerializeValue( SerializerEmitter emitter, TracingILGenerator il, int packerArgumentIndex, Type valueType, string memberName, NilImplication nilImplication, Action<TracingILGenerator> loadValueEmitter ) { Contract.Requires( emitter != null ); Contract.Requires( il != null ); Contract.Requires( packerArgumentIndex >= 0 ); Contract.Requires( valueType != null ); Contract.Requires( loadValueEmitter != null ); /* * var serializingValue = LOAD_VALUE; * NULL_PROHIBIT_HANDLING * GET_SERIALIZER.PackTo( packer, serializingValue ); */ var value = il.DeclareLocal( valueType, "serializingValue" ); loadValueEmitter( il ); il.EmitAnyStloc( value ); if ( memberName != null && nilImplication == NilImplication.Prohibit ) { /* * if( serializingValue == null )( * { * throw SerializationExceptions.NewNullIsProhibited(); * } */ if ( !valueType.IsValueType ) { il.EmitAnyLdloc( value ); var endIf = il.DefineLabel( "END_IF" ); il.EmitBrtrue_S( endIf ); il.EmitLdstr( memberName ); il.EmitAnyCall( SerializationExceptions.NewNullIsProhibitedMethod ); il.EmitThrow(); il.MarkLabel( endIf ); } else if ( Nullable.GetUnderlyingType( valueType ) != null ) { il.EmitAnyLdloca( value ); il.EmitGetProperty( typeof( Nullable<> ).MakeGenericType( Nullable.GetUnderlyingType( valueType ) ).GetProperty( "HasValue" ) ); var endIf = il.DefineLabel( "END_IF" ); il.EmitBrtrue_S( endIf ); il.EmitLdstr( memberName ); il.EmitAnyCall( SerializationExceptions.NewNullIsProhibitedMethod ); il.EmitThrow(); il.MarkLabel( endIf ); } } var serializerGetter = emitter.RegisterSerializer( valueType ); serializerGetter( il, 0 ); il.EmitAnyLdarg( packerArgumentIndex ); il.EmitAnyLdloc( value ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( valueType ).GetMethod( "PackTo" ) ); }
/// <summary> /// Emits gets <see cref="Unpacker.ItemsCount"/> with exception handling. /// Note that final state is the value is pushed top of the evaluation stack. /// </summary> /// <param name="il">IL generator.</param> /// <param name="unpackerArgumentIndex">Argument index of the unpacker.</param> public static void EmitGetUnpackerItemsCountAsInt32( TracingILGenerator il, int unpackerArgumentIndex ) { Contract.Requires( il != null ); Contract.Requires( unpackerArgumentIndex >= 0 ); /* * long rawItemsCount; * try * { * rawItemsCount = unpacker.ItemsCount; * } * catch ( InvalidOperationException ex ) * { * throw SerializationExceptions.NewIsIncorrectStream( ex ); * } * * if( rawItemsCount > Int32.MaxValue ) * { * throw SerializationException.NewIsTooLargeCollection(); * } * * ... unchecked( ( int )rawItemsCount ); */ var rawItemsCount = il.DeclareLocal( typeof( long ), "rawItemsCount" ); il.BeginExceptionBlock(); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.ItemsCount ); il.EmitAnyStloc( rawItemsCount ); il.BeginCatchBlock( typeof( InvalidOperationException ) ); il.EmitAnyCall( SerializationExceptions.NewIsIncorrectStreamMethod ); il.EmitThrow(); il.EndExceptionBlock(); il.EmitAnyLdloc( rawItemsCount ); il.EmitLdc_I8( Int32.MaxValue ); var endIf = il.DefineLabel(); il.EmitBle_S( endIf ); il.EmitAnyCall( SerializationExceptions.NewIsTooLargeCollectionMethod ); il.EmitThrow(); il.MarkLabel( endIf ); il.EmitAnyLdloc( rawItemsCount ); il.EmitConv_I4(); }
public static void EmitDeserializeValue( SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder value, LocalBuilder isUnpacked, string memberName, NilImplication nilImplication, Action<TracingILGenerator, int> customUnpackerReading ) { Contract.Requires( emitter != null ); Contract.Requires( il != null ); Contract.Requires( unpackerArgumentIndex >= 0 ); Contract.Requires( value != null ); if ( customUnpackerReading != null ) { customUnpackerReading( il, unpackerArgumentIndex ); } var endOfDeserialization = il.DefineLabel( "END_OF_DESERIALIZATION" ); if ( memberName != null ) { switch ( nilImplication ) { case NilImplication.MemberDefault: { /* * if( unpacker.Data.Value.IsNil ) * { * // Skip current. * goto END_OF_DESERIALIZATION; * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); il.EmitBrtrue( endOfDeserialization ); break; } case NilImplication.Prohibit: { /* * if( unpacker.Data.Value.IsNil ) * { * throw SerializationEceptions.NewProhibitNullException( "..." ); * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.Data ); var data = il.DeclareLocal( typeof( MessagePackObject? ), "data" ); il.EmitAnyStloc( data ); il.EmitAnyLdloca( data ); il.EmitGetProperty( Metadata._Nullable<MessagePackObject>.Value ); var dataValue = il.DeclareLocal( typeof( MessagePackObject ), "dataValue" ); il.EmitAnyStloc( dataValue ); il.EmitAnyLdloca( dataValue ); il.EmitGetProperty( Metadata._MessagePackObject.IsNil ); var endIf0 = il.DefineLabel( "END_IF0" ); il.EmitBrfalse_S( endIf0 ); il.EmitLdstr( memberName ); il.EmitAnyCall( SerializationExceptions.NewNullIsProhibitedMethod ); il.EmitThrow(); il.MarkLabel( endIf0 ); break; } } } /* * * if( !unpacker.IsArrayHeader && !unpacker.IsMapHeader ) * { * valueN = GET_SERIALIZER.UnpackFrom( unpacker ); * } * else * { * using( var subtreeUnpacker = unpacker.ReadSubtree ) * { * valueN = GET_SERIALIZER.UnpackFrom( unpacker ); * } * } * * isValueNUnpacked = true; * END_OF_DESERIALIZATION: */ var then = il.DefineLabel( "THEN" ); var endIf = il.DefineLabel( "END_IF" ); var serializerGetter = emitter.RegisterSerializer( value.LocalType ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsArrayHeader ); il.EmitBrtrue_S( then ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsMapHeader ); il.EmitBrtrue_S( then ); // else serializerGetter( il, 0 ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( value.LocalType ).GetMethod( "UnpackFrom" ) ); il.EmitAnyStloc( value ); il.EmitBr_S( endIf ); // then var subtreeUnpacker = il.DeclareLocal( typeof( Unpacker ), "subtreeUnpacker" ); il.MarkLabel( then ); EmitUnpackerBeginReadSubtree( il, unpackerArgumentIndex, subtreeUnpacker ); serializerGetter( il, 0 ); il.EmitAnyLdloc( subtreeUnpacker ); il.EmitAnyCall( typeof( MessagePackSerializer<> ).MakeGenericType( value.LocalType ).GetMethod( "UnpackFrom" ) ); il.EmitAnyStloc( value ); EmitUnpackerEndReadSubtree( il, subtreeUnpacker ); il.MarkLabel( endIf ); if ( isUnpacked != null ) { il.EmitLdc_I4_1(); il.EmitAnyStloc( isUnpacked ); } il.MarkLabel( endOfDeserialization ); }