61 строка
1.8 KiB
C#
61 строка
1.8 KiB
C#
// Copyright 2012-2013, 2015 Xamarin Inc. All rights reserved.
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using Mono.Cecil;
|
|
using Mono.Linker;
|
|
using Mono.Linker.Steps;
|
|
|
|
using Xamarin.Tuner;
|
|
|
|
namespace Xamarin.Linker {
|
|
|
|
// MobileMarkStep process a bit more data and that can be used to sweep
|
|
// more metadata afterward. OTOH sweeping them without the extra marking
|
|
// would produce invalid assemblies
|
|
public class MobileSweepStep : SweepStep {
|
|
|
|
public MobileSweepStep (bool sweepSymbols)
|
|
: base (sweepSymbols)
|
|
{
|
|
}
|
|
|
|
public AssemblyAction CurrentAction { get; private set; }
|
|
|
|
protected override void Process ()
|
|
{
|
|
base.Process ();
|
|
|
|
var assemblies = Context.GetAssemblies ();
|
|
foreach (var assembly in assemblies) {
|
|
CurrentAction = Annotations.GetAction (assembly);
|
|
switch (CurrentAction) {
|
|
case AssemblyAction.Link:
|
|
case AssemblyAction.Save:
|
|
SweepAssemblyDefinition (assembly);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected virtual void SweepAssemblyDefinition (AssemblyDefinition assembly)
|
|
{
|
|
SweepMainModule (assembly.MainModule);
|
|
}
|
|
|
|
protected void SweepMainModule (ModuleDefinition main)
|
|
{
|
|
// if we save (only or by linking) then unmarked exports (e.g. forwarders) must be cleaned
|
|
// or they can point to nothing which will break later (e.g. when re-loading for stripping IL)
|
|
// reference: https://bugzilla.xamarin.com/show_bug.cgi?id=36577
|
|
if (main.HasExportedTypes)
|
|
SweepCollectionMetadata (main.ExportedTypes);
|
|
// only when linking should we remove module references, if we (re)save the assembly then
|
|
// the entrypoints (for p/invokes) will be required later
|
|
// reference: https://bugzilla.xamarin.com/show_bug.cgi?id=35372
|
|
if (main.HasModuleReferences && (CurrentAction == AssemblyAction.Link))
|
|
SweepCollectionMetadata (main.ModuleReferences);
|
|
}
|
|
}
|
|
}
|