71 lines
2.7 KiB
C#
71 lines
2.7 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Runtime.Serialization
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{
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using System;
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using System.Collections.Generic;
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using System.Security;
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sealed class GenericParameterDataContract : DataContract
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{
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[Fx.Tag.SecurityNote(Critical = "Holds instance of CriticalHelper which keeps state that is cached statically for serialization."
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+ " Static fields are marked SecurityCritical or readonly to prevent data from being modified or leaked to other components in appdomain.")]
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[SecurityCritical]
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GenericParameterDataContractCriticalHelper helper;
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[Fx.Tag.SecurityNote(Critical = "Initializes SecurityCritical field 'helper'.",
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Safe = "Doesn't leak anything.")]
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[SecuritySafeCritical]
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internal GenericParameterDataContract(Type type)
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: base(new GenericParameterDataContractCriticalHelper(type))
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{
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helper = base.Helper as GenericParameterDataContractCriticalHelper;
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}
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internal int ParameterPosition
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{
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[Fx.Tag.SecurityNote(Critical = "Fetches the critical ParameterPosition property.",
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Safe = "ParameterPosition only needs to be protected for write.")]
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[SecuritySafeCritical]
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get { return helper.ParameterPosition; }
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}
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internal override bool IsBuiltInDataContract
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{
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get
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{
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return true;
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}
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}
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[Fx.Tag.SecurityNote(Critical = "Holds state used for deaing with generic parameters."
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+ " Since the data is cached statically, we lock down access to it.")]
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#if !NO_SECURITY_ATTRIBUTES
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[SecurityCritical(SecurityCriticalScope.Everything)]
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#endif
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class GenericParameterDataContractCriticalHelper : DataContract.DataContractCriticalHelper
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{
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int parameterPosition;
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internal GenericParameterDataContractCriticalHelper(Type type)
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: base(type)
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{
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SetDataContractName(DataContract.GetStableName(type));
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this.parameterPosition = type.GenericParameterPosition;
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}
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internal int ParameterPosition
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{
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get { return parameterPosition; }
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}
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}
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internal override DataContract BindGenericParameters(DataContract[] paramContracts, Dictionary<DataContract, DataContract> boundContracts)
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{
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return paramContracts[ParameterPosition];
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}
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}
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}
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