150 lines
3.8 KiB
C#
150 lines
3.8 KiB
C#
//
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// MarkNSObjectsBase.cs
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//
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// Authors:
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// Jb Evain (jbevain@novell.com)
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// Sebastien Pouliot <sebastien@xamarin.com>
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//
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// (C) 2009 Novell, Inc.
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// Copyright (C) 2011 Xamarin, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using Mono.Linker;
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using Mono.Linker.Steps;
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using Mono.Tuner;
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using Mono.Cecil;
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namespace Mono.Tuner {
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public abstract class MarkNSObjectsBase : BaseSubStep {
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protected abstract string ExportAttribute { get; }
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public override SubStepTargets Targets {
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get { return SubStepTargets.Type; }
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}
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public override void ProcessType (TypeDefinition type)
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{
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if (!IsProductType (type)) {
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Annotations.Mark (type);
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Annotations.SetPreserve (type, TypePreserve.All);
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} else
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PreserveProductType (type);
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}
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void PreserveProductType (TypeDefinition type)
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{
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PreserveIntPtrConstructor (type);
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PreserveExportedMethods (type);
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}
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void PreserveExportedMethods (TypeDefinition type)
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{
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if (!type.HasMethods)
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return;
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foreach (var method in type.GetMethods ()) {
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if (!IsExportedMethod (method))
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continue;
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if (!IsOverridenInUserCode (method))
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continue;
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PreserveMethod (type, method);
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}
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}
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bool IsOverridenInUserCode (MethodDefinition method)
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{
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if (!method.IsVirtual)
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return false;
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var overrides = Annotations.GetOverrides (method);
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if (overrides == null || overrides.Count == 0)
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return false;
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foreach (MethodDefinition @override in overrides)
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if (!IsProductMethod (@override))
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return true;
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return false;
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}
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bool IsExportedMethod (MethodDefinition method)
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{
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return HasExportAttribute (method);
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}
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bool HasExportAttribute (ICustomAttributeProvider provider)
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{
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if (!provider.HasCustomAttributes)
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return false;
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foreach (CustomAttribute attribute in provider.CustomAttributes)
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if (attribute.AttributeType.FullName == ExportAttribute)
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return true;
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return false;
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}
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void PreserveIntPtrConstructor (TypeDefinition type)
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{
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if (!type.HasMethods)
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return;
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foreach (MethodDefinition constructor in type.GetConstructors ()) {
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if (!constructor.HasParameters)
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continue;
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if (constructor.Parameters.Count != 1 || constructor.Parameters [0].ParameterType.FullName != "System.IntPtr")
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continue;
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PreserveMethod (type, constructor);
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break; // only one .ctor can match this
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}
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}
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void PreserveMethod (TypeDefinition type, MethodDefinition method)
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{
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Annotations.AddPreservedMethod (type, method);
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}
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static bool IsProductMethod (MethodDefinition method)
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{
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return IsProductType (method.DeclaringType);
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}
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static bool IsProductType (TypeDefinition type)
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{
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return Profile.IsProductAssembly (type.Module.Assembly);
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}
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}
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}
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