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 ); }
/// <summary> /// Emits the deserialize value. /// </summary> /// <param name="emitter">The emitter.</param> /// <param name="il">The il generator.</param> /// <param name="unpackerArgumentIndex">Index of the unpacker argument.</param> /// <param name="value">The value local variable which stores unpacked value.</param> /// <param name="targetType">The type of deserialzing type.</param> /// <param name="member">The metadata for nil implication. Specify <c>null</c> if nil implication is not needed.</param> /// <param name="memberName">The name of the member.</param> /// <param name="endOfDeserialization">The end of deserialization label for nil implication.</param> /// <param name="localHolder">The <see cref="LocalVariableHolder"/> which holds shared local variable information.</param> private static void EmitDeserializeValueCore( SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder value, Type targetType, SerializingMember? member, string memberName, Label endOfDeserialization, LocalVariableHolder localHolder ) { var directUnpacking = Metadata._Unpacker.GetDirectReadMethod( value.LocalType ); if ( directUnpacking != null && ( member == null || !UnpackHelpers.IsReadOnlyAppendableCollectionMember( member.Value.Member ) ) ) { var isSuccess = localHolder.IsDeserializationSucceeded; il.EmitLdc_I4_0(); il.EmitAnyStloc( isSuccess ); il.BeginExceptionBlock(); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitAnyLdloca( value ); il.EmitAnyCall( directUnpacking ); il.EmitAnyStloc( isSuccess ); il.BeginCatchBlock( typeof( MessageTypeException ) ); var ex = localHolder.GetCatchedException( typeof( MessageTypeException ) ); il.EmitAnyStloc( ex ); il.EmitTypeOf( targetType ); il.EmitLdstr( memberName ); il.EmitAnyLdloc( ex ); il.EmitAnyCall( SerializationExceptions.NewFailedToDeserializeMemberMethod ); il.EmitThrow(); il.EndExceptionBlock(); var endIf0 = il.DefineLabel( "END_IF" ); il.EmitAnyLdloc( isSuccess ); il.EmitBrtrue_S( endIf0 ); il.EmitAnyCall( SerializationExceptions.NewUnexpectedEndOfStreamMethod ); il.EmitThrow(); il.MarkLabel( endIf0 ); if ( member != null ) { // If null, nil implication is NOT needed. EmitNilImplicationForPrimitive( il, member.Value, value, endOfDeserialization ); } } else { EmitGeneralRead( il, unpackerArgumentIndex ); if ( member != null ) { // If null, nil implication is NOT needed. EmitNilImplication( il, unpackerArgumentIndex, member.Value.Contract.Name, member.Value.Contract.NilImplication, endOfDeserialization, localHolder ); } var thenIffCollection = il.DefineLabel( "THEN_IF_COLLECTION" ); var endIfCollection = il.DefineLabel( "END_IF_COLLECTION" ); /* * if( !unpacker.IsArrayHeader && !unpacker.IsMapHeader ) * { * value = GET_SERIALIZER().UnpackFrom( unpacker ); * } * else * { * using( var subtreeUnpacker = unpacker.ReadSubtree() ) * { * value = GET_SERIALIZER().UnpackFrom( subtreeUnpacker ); * } * } */ il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsArrayHeader ); il.EmitAnyLdarg( unpackerArgumentIndex ); il.EmitGetProperty( Metadata._Unpacker.IsMapHeader ); il.EmitOr(); il.EmitBrtrue_S( thenIffCollection ); EmitUnpackFrom( emitter, il, value, unpackerArgumentIndex ); il.EmitBr_S( endIfCollection ); var subtreeUnpacker = localHolder.SubtreeUnpacker; il.MarkLabel( thenIffCollection ); EmitUnpackerBeginReadSubtree( il, unpackerArgumentIndex, subtreeUnpacker ); EmitUnpackFrom( emitter, il, value, subtreeUnpacker ); EmitUnpackerEndReadSubtree( il, subtreeUnpacker ); il.MarkLabel( endIfCollection ); } }
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 ); }