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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Microsoft.Build.Framework;
using Mono.Linker;
using Mono.Linker.Steps;
using Xunit;
namespace ILLink.Tasks.Tests
{
public class MockTask : ILLink
{
public List<(MessageImportance Importance, string Line)> Messages { get; } = new List<(MessageImportance Importance, string Line)> ();
public MockTask ()
{
// Ensure that [Required] members are non-null
AssemblyPaths = new ITaskItem[0];
RootAssemblyNames = new ITaskItem[0];
}
public MockDriver CreateDriver ()
{
string[] responseFileLines = GenerateResponseFileCommands ().Split (Environment.NewLine);
var arguments = new Queue<string> ();
Driver.ParseResponseFileLines (responseFileLines, arguments);
return new MockDriver (arguments);
}
public static string[] OptimizationNames {
get {
var field = typeof (ILLink).GetField ("_optimizationNames", BindingFlags.NonPublic | BindingFlags.Static);
return (string[]) field.GetValue (null);
}
}
public void SetOptimization (string optimization, bool enabled)
{
var property = typeof (ILLink).GetProperty (optimization);
property.GetSetMethod ().Invoke (this, new object[] { enabled });
}
static readonly string[] nonOptimizationBooleanProperties = new string[] {
"DumpDependencies",
"RemoveSymbols",
"TreatWarningsAsErrors"
};
public static IEnumerable<string> GetOptimizationPropertyNames ()
{
foreach (var property in typeof (ILLink).GetProperties (BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance)) {
if (property.PropertyType != typeof (bool))
continue;
if (nonOptimizationBooleanProperties.Contains (property.Name))
continue;
yield return property.Name;
}
}
protected override void LogEventsFromTextOutput (string singleLine, MessageImportance messageImportance) => Messages.Add ((messageImportance, singleLine));
}
public class MockBuildEngine : IBuildEngine
{
public void LogErrorEvent (BuildErrorEventArgs e) { }
public void LogWarningEvent (BuildWarningEventArgs e) { }
public void LogMessageEvent (BuildMessageEventArgs e) { }
public void LogCustomEvent (CustomBuildEventArgs e) { }
public bool BuildProjectFile (string projectFileName, string[] targetNames, IDictionary globalProperties, IDictionary targetOutputs) => false;
public bool ContinueOnError => false;
public int LineNumberOfTaskNode => 0;
public int ColumnNumberOfTaskNode => 0;
public string ProjectFileOfTaskNode => null;
}
public class MockDriver : Driver
{
public MockDriver (Queue<string> arguments) : base (arguments)
{
// Always add a dummy root assembly for testing purposes (otherwise Driver fails without roots).
arguments.Enqueue ("-a");
arguments.Enqueue ("DummyRootAssembly");
// Always set up the context early on.
Assert.Equal (0, SetupContext ());
}
public LinkContext Context => context;
public IEnumerable<string> GetRootAssemblies ()
{
foreach (var step in context.Pipeline.GetSteps ()) {
if (!(step is ResolveFromAssemblyStep))
continue;
var assemblyName = (string) (typeof (ResolveFromAssemblyStep).GetField ("_file", BindingFlags.NonPublic | BindingFlags.Instance).GetValue (step));
if (assemblyName == "DummyRootAssembly")
continue;
yield return assemblyName;
}
}
public IEnumerable<string> GetRootDescriptors ()
{
foreach (var step in context.Pipeline.GetSteps ()) {
if (!(step is ResolveFromXmlStep))
continue;
var descriptor = (string) (typeof (ResolveFromXmlStep).GetField ("_xmlDocumentLocation", BindingFlags.NonPublic | BindingFlags.Instance).GetValue (step));
yield return descriptor;
}
}
public IEnumerable<string> GetReferenceAssemblies ()
{
return (IEnumerable<string>) (typeof (AssemblyResolver).GetField ("_references", BindingFlags.NonPublic | BindingFlags.Instance).GetValue (context.Resolver));
}
protected override void AddResolveFromXmlStep (Pipeline pipeline, string file)
{
// Don't try to load an xml file - just pretend it exists.
pipeline.PrependStep (new ResolveFromXmlStep (document: null, file));
}
protected override void AddXmlDependencyRecorder (LinkContext context, string file)
{
// Don't try to open the output file for writing - just pretend it exists.
Context.Tracer.AddRecorder (MockXmlDependencyRecorder.Singleton);
}
public IEnumerable<IDependencyRecorder> GetDependencyRecorders ()
{
return (IEnumerable<IDependencyRecorder>) (typeof (Tracer).GetField ("recorders", BindingFlags.NonPublic | BindingFlags.Instance).GetValue (context.Tracer));
}
public new bool GetOptimizationName (string optimization, out CodeOptimizations codeOptimizations)
{
return base.GetOptimizationName (optimization, out codeOptimizations);
}
public CodeOptimizations GetDefaultOptimizations ()
{
var context = base.GetDefaultContext (null);
return context.Optimizations.Global;
}
public Dictionary<string, string> GetCustomData ()
{
var field = typeof (LinkContext).GetField ("_parameters", BindingFlags.NonPublic | BindingFlags.Instance);
return (Dictionary<string, string>) field.GetValue (this.context);
}
}
public class MockXmlDependencyRecorder : IDependencyRecorder
{
public static MockXmlDependencyRecorder Singleton = new MockXmlDependencyRecorder ();
public void RecordDependency (object source, object arget, bool marked) { }
public void RecordDependency (object target, in DependencyInfo reason, bool marked) { }
}
public class MockCustomStep : IStep
{
public void Process (LinkContext context) { }
}
}
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