public override bool Execute(out IList <Exception> thrownExceptions)
{
thrownExceptions = null;
LoggingHelper.LogMessage(Normal, $"{new string(' ', 0)}Preparing debug code for xamlc, assembly: {Assembly}");
var resolver = new DefaultAssemblyResolver();
if (!string.IsNullOrEmpty(DependencyPaths))
{
foreach (var dep in DependencyPaths.Split(';'))
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Adding searchpath {dep}");
resolver.AddSearchDirectory(dep);
}
}
if (!string.IsNullOrEmpty(ReferencePath))
{
var paths = ReferencePath.Replace("//", "/").Split(';');
foreach (var p in paths)
{
var searchpath = IOPath.GetDirectoryName(p);
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Adding searchpath {searchpath}");
resolver.AddSearchDirectory(searchpath);
}
}
var debug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none");
using (var assemblyDefinition = AssemblyDefinition.ReadAssembly(Assembly, new ReaderParameters {
ReadWrite = true,
ReadSymbols = debug,
AssemblyResolver = resolver
})) {
foreach (var module in assemblyDefinition.Modules)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Module: {module.Name}");
foreach (var resource in module.Resources.OfType <EmbeddedResource>())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Resource: {resource.Name}");
if (!resource.IsXaml(module, out var classname))
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}skipped.");
continue;
}
TypeDefinition typeDef = module.GetType(classname);
if (typeDef == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no type found... skipped.");
continue;
}
var initComp = typeDef.Methods.FirstOrDefault(md => md.Name == "InitializeComponent");
if (initComp == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no InitializeComponent found... skipped.");
continue;
}
var initCompRuntime = typeDef.Methods.FirstOrDefault(md => md.Name == "__InitComponentRuntime");
if (initCompRuntime == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Creating empty {typeDef.Name}.__InitComponentRuntime");
initCompRuntime = new MethodDefinition("__InitComponentRuntime", initComp.Attributes, initComp.ReturnType);
initCompRuntime.Body.InitLocals = true;
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Copying body of InitializeComponent to __InitComponentRuntime");
initCompRuntime.Body = new MethodBody(initCompRuntime);
var iCRIl = initCompRuntime.Body.GetILProcessor();
foreach (var instr in initComp.Body.Instructions)
{
iCRIl.Append(instr);
}
initComp.Body.Instructions.Clear();
initComp.Body.GetILProcessor().Emit(OpCodes.Ret);
typeDef.Methods.Add(initCompRuntime);
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
// IL_0000: ldarg.0
// IL_0001: callvirt instance void class [Xamarin.Forms.Core]Xamarin.Forms.ContentPage::'.ctor'()
//
// IL_0006: nop
// IL_0007: ldarg.1
// IL_0008: brfalse IL_0018
//
// IL_000d: ldarg.0
// IL_000e: callvirt instance void class Xamarin.Forms.Xaml.XamlcTests.MyPage::InitializeComponent()
// IL_0013: br IL_001e
//
// IL_0018: ldarg.0
// IL_0019: callvirt instance void class Xamarin.Forms.Xaml.XamlcTests.MyPage::__InitComponentRuntime()
// IL_001e: ret
var altCtor = typeDef.Methods.FirstOrDefault(md => md.IsConstructor &&
md.Parameters.Count == 1 &&
md.Parameters[0].ParameterType == module.TypeSystem.Boolean);
if (altCtor != null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Replacing body of {typeDef.Name}.{typeDef.Name} (bool {altCtor.Parameters[0].Name})");
}
else
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Adding {typeDef.Name}.{typeDef.Name} (bool useCompiledXaml)");
altCtor = new MethodDefinition(".ctor",
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName, module.TypeSystem.Void);
altCtor.Parameters.Add(new ParameterDefinition("useCompiledXaml", ParameterAttributes.None,
module.TypeSystem.Boolean));
}
var body = new MethodBody(altCtor)
{
InitLocals = true
};
var il = body.GetILProcessor();
var br2 = Instruction.Create(OpCodes.Ldarg_0);
var ret = Instruction.Create(OpCodes.Ret);
il.Emit(OpCodes.Ldarg_0);
MethodReference baseCtor;
if (typeDef.BaseType.Resolve().GetConstructors().FirstOrDefault(c => c.HasParameters && c.Parameters.Count == 1 && c.Parameters[0].Name == "useCompiledXaml") is MethodDefinition baseCtorDef)
{
baseCtor = module.ImportReference(baseCtorDef);
baseCtor = module.ImportReference(baseCtor.ResolveGenericParameters(typeDef.BaseType, module));
il.Emit(OpCodes.Ldarg_1);
}
else
{
baseCtor = module.ImportReference(typeDef.BaseType.Resolve().GetConstructors().First(c => c.HasParameters == false));
baseCtor = module.ImportReference(baseCtor.ResolveGenericParameters(typeDef.BaseType, module));
}
il.Emit(OpCodes.Callvirt, baseCtor);
il.Emit(OpCodes.Nop);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Brfalse, br2);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Callvirt, initComp);
il.Emit(OpCodes.Br, ret);
il.Append(br2);
il.Emit(OpCodes.Callvirt, initCompRuntime);
il.Append(ret);
altCtor.Body = body;
if (!typeDef.Methods.Contains(altCtor))
{
typeDef.Methods.Add(altCtor);
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
}
LoggingHelper.LogMessage(Normal, $"{new string(' ', 0)}Writing the assembly.");
assemblyDefinition.Write(new WriterParameters {
WriteSymbols = debug
});
}
LoggingHelper.LogMessage(Normal, $"{new string(' ', 2)}done.");
return(true);
}
public override bool Execute(out IList <Exception> thrownExceptions)
{
thrownExceptions = null;
Logger = Logger ?? new Logger(null, Verbosity);
Logger.LogLine(1, "Compiling Xaml");
Logger.LogLine(1, "\nAssembly: {0}", Assembly);
if (!string.IsNullOrEmpty(DependencyPaths))
{
Logger.LogLine(1, "DependencyPaths: \t{0}", DependencyPaths);
}
if (!string.IsNullOrEmpty(ReferencePath))
{
Logger.LogLine(1, "ReferencePath: \t{0}", ReferencePath.Replace("//", "/"));
}
Logger.LogLine(3, "DebugSymbols:\"{0}\"", DebugSymbols);
Logger.LogLine(3, "DebugType:\"{0}\"", DebugType);
var skipassembly = true; //change this to false to enable XamlC by default
bool success = true;
if (!File.Exists(Assembly))
{
Logger.LogLine(1, "Assembly file not found. Skipping XamlC.");
return(true);
}
var resolver = new XamlCAssemblyResolver();
if (!string.IsNullOrEmpty(DependencyPaths))
{
foreach (var dep in DependencyPaths.Split(';'))
{
Logger.LogLine(3, "Adding searchpath {0}", dep);
resolver.AddSearchDirectory(dep);
}
}
if (!string.IsNullOrEmpty(ReferencePath))
{
var paths = ReferencePath.Replace("//", "/").Split(';');
foreach (var p in paths)
{
var searchpath = Path.GetDirectoryName(p);
Logger.LogLine(3, "Adding searchpath {0}", searchpath);
resolver.AddSearchDirectory(searchpath);
}
}
var debug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none");
var readerParameters = new ReaderParameters {
AssemblyResolver = resolver,
ReadWrite = !ReadOnly,
ReadSymbols = debug,
};
using (var assemblyDefinition = AssemblyDefinition.ReadAssembly(Path.GetFullPath(Assembly), readerParameters)) {
CustomAttribute xamlcAttr;
if (assemblyDefinition.HasCustomAttributes &&
(xamlcAttr =
assemblyDefinition.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipassembly = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipassembly = false;
}
}
foreach (var module in assemblyDefinition.Modules)
{
var skipmodule = skipassembly;
if (module.HasCustomAttributes &&
(xamlcAttr =
module.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipmodule = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipmodule = false;
}
}
Logger.LogLine(2, " Module: {0}", module.Name);
var resourcesToPrune = new List <EmbeddedResource>();
foreach (var resource in module.Resources.OfType <EmbeddedResource>())
{
Logger.LogString(2, " Resource: {0}... ", resource.Name);
string classname;
if (!resource.IsXaml(out classname))
{
Logger.LogLine(2, "skipped.");
continue;
}
TypeDefinition typeDef = module.GetType(classname);
if (typeDef == null)
{
Logger.LogLine(2, "no type found... skipped.");
continue;
}
var skiptype = skipmodule;
if (typeDef.HasCustomAttributes &&
(xamlcAttr =
typeDef.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skiptype = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skiptype = false;
}
}
if (Type != null)
{
skiptype = !(Type == classname);
}
if (skiptype)
{
Logger.LogLine(2, "Has XamlCompilationAttribute set to Skip and not Compile... skipped");
continue;
}
var initComp = typeDef.Methods.FirstOrDefault(md => md.Name == "InitializeComponent");
if (initComp == null)
{
Logger.LogLine(2, "no InitializeComponent found... skipped.");
continue;
}
Logger.LogLine(2, "");
CustomAttribute xamlFilePathAttr;
var xamlFilePath = typeDef.HasCustomAttributes && (xamlFilePathAttr = typeDef.CustomAttributes.FirstOrDefault(ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlFilePathAttribute")) != null ?
(string)xamlFilePathAttr.ConstructorArguments[0].Value :
resource.Name;
var initCompRuntime = typeDef.Methods.FirstOrDefault(md => md.Name == "__InitComponentRuntime");
if (initCompRuntime != null)
{
Logger.LogLine(2, " __InitComponentRuntime already exists... not creating");
}
else
{
Logger.LogString(2, " Creating empty {0}.__InitComponentRuntime ...", typeDef.Name);
initCompRuntime = new MethodDefinition("__InitComponentRuntime", initComp.Attributes, initComp.ReturnType);
initCompRuntime.Body.InitLocals = true;
Logger.LogLine(2, "done.");
Logger.LogString(2, " Copying body of InitializeComponent to __InitComponentRuntime ...", typeDef.Name);
initCompRuntime.Body = new MethodBody(initCompRuntime);
var iCRIl = initCompRuntime.Body.GetILProcessor();
foreach (var instr in initComp.Body.Instructions)
{
iCRIl.Append(instr);
}
initComp.Body.Instructions.Clear();
initComp.Body.GetILProcessor().Emit(OpCodes.Ret);
initComp.Body.InitLocals = true;
typeDef.Methods.Add(initCompRuntime);
Logger.LogLine(2, "done.");
}
Logger.LogString(2, " Parsing Xaml... ");
var rootnode = ParseXaml(resource.GetResourceStream(), typeDef);
if (rootnode == null)
{
Logger.LogLine(2, "failed.");
continue;
}
Logger.LogLine(2, "done.");
hasCompiledXamlResources = true;
Logger.LogString(2, " Replacing {0}.InitializeComponent ()... ", typeDef.Name);
Exception e;
if (!TryCoreCompile(initComp, initCompRuntime, rootnode, resource.Name, out e))
{
success = false;
Logger.LogLine(2, "failed.");
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
Logger.LogException(null, null, null, xamlFilePath, e);
Logger.LogLine(4, e.StackTrace);
continue;
}
if (Type != null)
{
InitCompForType = initComp;
}
Logger.LogLine(2, "done.");
if (OptimizeIL)
{
Logger.LogString(2, " Optimizing IL... ");
initComp.Body.Optimize();
Logger.LogLine(2, "done");
}
Logger.LogLine(2, "");
#pragma warning disable 0618
if (OutputGeneratedILAsCode)
{
Logger.LogLine(2, " Decompiling option has been removed. Use a 3rd party decompiler to admire the beauty of the IL generated");
}
#pragma warning restore 0618
resourcesToPrune.Add(resource);
}
if (!KeepXamlResources)
{
if (resourcesToPrune.Any())
{
Logger.LogLine(2, " Removing compiled xaml resources");
}
foreach (var resource in resourcesToPrune)
{
Logger.LogString(2, " Removing {0}... ", resource.Name);
module.Resources.Remove(resource);
Logger.LogLine(2, "done");
}
}
Logger.LogLine(2, "");
}
if (!hasCompiledXamlResources)
{
Logger.LogLine(1, "No compiled resources. Skipping writing assembly.");
return(success);
}
if (ReadOnly)
{
return(success);
}
Logger.LogString(1, "Writing the assembly... ");
try {
assemblyDefinition.Write(new WriterParameters {
WriteSymbols = debug,
});
Logger.LogLine(1, "done.");
} catch (Exception e) {
Logger.LogLine(1, "failed.");
Logger.LogException(null, null, null, null, e);
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
Logger.LogLine(4, e.StackTrace);
success = false;
}
}
return(success);
}
public override bool Execute(out IList <Exception> thrownExceptions)
{
thrownExceptions = null;
LoggingHelper.LogMessage(Normal, $"{new string(' ', 0)}Compiling Xaml, assembly: {Assembly}");
var skipassembly = !CompileByDefault;
bool success = true;
if (!File.Exists(Assembly))
{
LoggingHelper.LogMessage(Normal, $"{new string(' ', 2)}Assembly file not found. Skipping XamlC.");
return(true);
}
using (var fallbackResolver = DefaultAssemblyResolver == null ? new XamlCAssemblyResolver() : null) {
var resolver = DefaultAssemblyResolver ?? fallbackResolver;
if (resolver is XamlCAssemblyResolver xamlCResolver)
{
if (!string.IsNullOrEmpty(DependencyPaths))
{
foreach (var dep in DependencyPaths.Split(';').Distinct())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Adding searchpath {dep}");
xamlCResolver.AddSearchDirectory(dep);
}
}
if (!string.IsNullOrEmpty(ReferencePath))
{
var paths = ReferencePath.Replace("//", "/").Split(';').Distinct();
foreach (var p in paths)
{
var searchpath = Path.GetDirectoryName(p);
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Adding searchpath {searchpath}");
xamlCResolver.AddSearchDirectory(searchpath);
}
}
}
else
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Ignoring dependency and reference paths due to an unsupported resolver");
}
var debug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none");
var readerParameters = new ReaderParameters {
AssemblyResolver = resolver,
ReadWrite = !ValidateOnly,
ReadSymbols = debug && !ValidateOnly, // We don't need symbols for ValidateOnly, since we won't be writing
};
using (var assemblyDefinition = AssemblyDefinition.ReadAssembly(Path.GetFullPath(Assembly), readerParameters)) {
CustomAttribute xamlcAttr;
if (assemblyDefinition.HasCustomAttributes &&
(xamlcAttr =
assemblyDefinition.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipassembly = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipassembly = false;
}
}
foreach (var module in assemblyDefinition.Modules)
{
var skipmodule = skipassembly;
if (module.HasCustomAttributes &&
(xamlcAttr =
module.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipmodule = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipmodule = false;
}
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Module: {module.Name}");
var resourcesToPrune = new List <EmbeddedResource>();
foreach (var resource in module.Resources.OfType <EmbeddedResource>())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Resource: {resource.Name}");
string classname;
if (!resource.IsXaml(module, out classname))
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}skipped.");
continue;
}
TypeDefinition typeDef = module.GetType(classname);
if (typeDef == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no type found... skipped.");
continue;
}
var skiptype = skipmodule;
if (typeDef.HasCustomAttributes &&
(xamlcAttr =
typeDef.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skiptype = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skiptype = false;
}
}
if (Type != null)
{
skiptype = !(Type == classname);
}
if (skiptype && !ForceCompile)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}has XamlCompilationAttribute set to Skip and not Compile... skipped.");
continue;
}
var initComp = typeDef.Methods.FirstOrDefault(md => md.Name == "InitializeComponent");
if (initComp == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no InitializeComponent found... skipped.");
continue;
}
CustomAttribute xamlFilePathAttr;
var xamlFilePath = typeDef.HasCustomAttributes && (xamlFilePathAttr = typeDef.CustomAttributes.FirstOrDefault(ca => ca.AttributeType.FullName == "Xamarin.Forms.Xaml.XamlFilePathAttribute")) != null ?
(string)xamlFilePathAttr.ConstructorArguments[0].Value :
resource.Name;
MethodDefinition initCompRuntime = null;
if (!ValidateOnly)
{
initCompRuntime = typeDef.Methods.FirstOrDefault(md => md.Name == "__InitComponentRuntime");
if (initCompRuntime != null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}__InitComponentRuntime already exists... not creating");
}
else
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Creating empty {typeDef.Name}.__InitComponentRuntime");
initCompRuntime = new MethodDefinition("__InitComponentRuntime", initComp.Attributes, initComp.ReturnType);
initCompRuntime.Body.InitLocals = true;
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Copying body of InitializeComponent to __InitComponentRuntime");
initCompRuntime.Body = new MethodBody(initCompRuntime);
var iCRIl = initCompRuntime.Body.GetILProcessor();
foreach (var instr in initComp.Body.Instructions)
{
iCRIl.Append(instr);
}
initComp.Body.Instructions.Clear();
initComp.Body.GetILProcessor().Emit(OpCodes.Ret);
initComp.Body.InitLocals = true;
typeDef.Methods.Add(initCompRuntime);
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Parsing Xaml");
var rootnode = ParseXaml(resource.GetResourceStream(), typeDef);
if (rootnode == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}failed.");
continue;
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
hasCompiledXamlResources = true;
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Replacing {0}.InitializeComponent ()");
Exception e;
if (!TryCoreCompile(initComp, initCompRuntime, rootnode, xamlFilePath, out e))
{
success = false;
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}failed.");
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
if (e is XamlParseException xpe)
{
LoggingHelper.LogError(null, null, null, xamlFilePath, xpe.XmlInfo.LineNumber, xpe.XmlInfo.LinePosition, 0, 0, xpe.Message, xpe.HelpLink, xpe.Source);
}
else if (e is XmlException xe)
{
LoggingHelper.LogError(null, null, null, xamlFilePath, xe.LineNumber, xe.LinePosition, 0, 0, xe.Message, xe.HelpLink, xe.Source);
}
else
{
LoggingHelper.LogError(null, null, null, xamlFilePath, 0, 0, 0, 0, e.Message, e.HelpLink, e.Source);
}
LoggingHelper.LogMessage(Low, e.StackTrace);
continue;
}
if (Type != null)
{
InitCompForType = initComp;
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
if (ValidateOnly)
{
continue;
}
if (OptimizeIL)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Optimizing IL");
initComp.Body.Optimize();
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
#pragma warning disable 0618
if (OutputGeneratedILAsCode)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Decompiling option has been removed. Use a 3rd party decompiler to admire the beauty of the IL generated");
}
#pragma warning restore 0618
resourcesToPrune.Add(resource);
}
if (hasCompiledXamlResources)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Changing the module MVID");
module.Mvid = Guid.NewGuid();
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}done.");
}
if (!KeepXamlResources)
{
if (resourcesToPrune.Any())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Removing compiled xaml resources");
}
foreach (var resource in resourcesToPrune)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Removing {resource.Name}");
module.Resources.Remove(resource);
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
}
}
if (ValidateOnly)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}ValidateOnly=True. Skipping writing assembly.");
return(success);
}
if (!hasCompiledXamlResources)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}No compiled resources. Skipping writing assembly.");
return(success);
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}Writing the assembly");
try {
assemblyDefinition.Write(new WriterParameters {
WriteSymbols = debug,
});
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}done.");
} catch (Exception e) {
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}failed.");
LoggingHelper.LogErrorFromException(e);
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
LoggingHelper.LogMessage(Low, e.StackTrace);
success = false;
}
}
}
return(success);
}
bool TryCoreCompile(MethodDefinition initComp, MethodDefinition initCompRuntime, ILRootNode rootnode, string xamlFilePath, out Exception exception)
{
try
{
var body = new MethodBody(initComp);
var module = body.Method.Module;
body.InitLocals = true;
var il = body.GetILProcessor();
var resourcePath = GetPathForType(module, initComp.DeclaringType);
il.Emit(Nop);
var visitorContext = new ILContext(il, body, module)
{
DefineDebug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none"),
XamlFilePath = xamlFilePath
};
rootnode.Accept(new XamlNodeVisitor((node, parent) => node.Parent = parent), null);
rootnode.Accept(new ExpandMarkupsVisitor(visitorContext), null);
rootnode.Accept(new PruneIgnoredNodesVisitor(), null);
rootnode.Accept(new CreateObjectVisitor(visitorContext), null);
rootnode.Accept(new SetNamescopesAndRegisterNamesVisitor(visitorContext), null);
rootnode.Accept(new SetFieldVisitor(visitorContext), null);
rootnode.Accept(new SetResourcesVisitor(visitorContext), null);
rootnode.Accept(new SetPropertiesVisitor(visitorContext, true), null);
il.Emit(Ret);
initComp.Body = body;
exception = null;
return(true);
}
catch (Exception e)
{
exception = e;
return(false);
}
}
public override bool Execute(out IList <Exception> thrownExceptions)
{
thrownExceptions = null;
Logger = Logger ?? new Logger(null, Verbosity);
Logger.LogLine(1, "Preparing debug code for xamlc");
Logger.LogLine(1, "\nAssembly: {0}", Assembly);
var resolver = new DefaultAssemblyResolver();
if (!string.IsNullOrEmpty(DependencyPaths))
{
foreach (var dep in DependencyPaths.Split(';'))
{
Logger.LogLine(3, "Adding searchpath {0}", dep);
resolver.AddSearchDirectory(dep);
}
}
if (!string.IsNullOrEmpty(ReferencePath))
{
var paths = ReferencePath.Replace("//", "/").Split(';');
foreach (var p in paths)
{
var searchpath = Path.GetDirectoryName(p);
Logger.LogLine(3, "Adding searchpath {0}", searchpath);
resolver.AddSearchDirectory(searchpath);
// LogLine (3, "Referencing {0}", p);
// resolver.AddAssembly (p);
}
}
var debug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none");
using (var assemblyDefinition = AssemblyDefinition.ReadAssembly(Assembly, new ReaderParameters {
ReadWrite = true,
ReadSymbols = debug,
AssemblyResolver = resolver
})) {
foreach (var module in assemblyDefinition.Modules)
{
Logger.LogLine(2, " Module: {0}", module.Name);
foreach (var resource in module.Resources.OfType <EmbeddedResource>())
{
Logger.LogString(2, " Resource: {0}... ", resource.Name);
string classname;
if (!resource.IsXaml(module, out classname))
{
Logger.LogLine(2, "skipped.");
continue;
}
else
{
Logger.LogLine(2, "");
}
TypeDefinition typeDef = module.GetType(classname);
if (typeDef == null)
{
Logger.LogLine(2, "no type found... skipped.");
continue;
}
var initComp = typeDef.Methods.FirstOrDefault(md => md.Name == "InitializeComponent");
if (initComp == null)
{
Logger.LogLine(2, "no InitializeComponent found... skipped.");
continue;
}
var initCompRuntime = typeDef.Methods.FirstOrDefault(md => md.Name == "__InitComponentRuntime");
if (initCompRuntime == null)
{
Logger.LogString(2, " Creating empty {0}.__InitComponentRuntime ...", typeDef.Name);
initCompRuntime = new MethodDefinition("__InitComponentRuntime", initComp.Attributes, initComp.ReturnType);
initCompRuntime.Body.InitLocals = true;
Logger.LogLine(2, "done.");
Logger.LogString(2, " Copying body of InitializeComponent to __InitComponentRuntime ...", typeDef.Name);
initCompRuntime.Body = new MethodBody(initCompRuntime);
var iCRIl = initCompRuntime.Body.GetILProcessor();
foreach (var instr in initComp.Body.Instructions)
{
iCRIl.Append(instr);
}
initComp.Body.Instructions.Clear();
initComp.Body.GetILProcessor().Emit(OpCodes.Ret);
typeDef.Methods.Add(initCompRuntime);
Logger.LogLine(2, "done.");
}
// IL_0000: ldarg.0
// IL_0001: callvirt instance void class [Xamarin.Forms.Core]Xamarin.Forms.ContentPage::'.ctor'()
//
// IL_0006: nop
// IL_0007: ldarg.1
// IL_0008: brfalse IL_0018
//
// IL_000d: ldarg.0
// IL_000e: callvirt instance void class Xamarin.Forms.Xaml.XamlcTests.MyPage::InitializeComponent()
// IL_0013: br IL_001e
//
// IL_0018: ldarg.0
// IL_0019: callvirt instance void class Xamarin.Forms.Xaml.XamlcTests.MyPage::__InitComponentRuntime()
// IL_001e: ret
var altCtor =
typeDef.Methods.Where(
md => md.IsConstructor && md.Parameters.Count == 1 && md.Parameters[0].ParameterType == module.TypeSystem.Boolean)
.FirstOrDefault();
if (altCtor != null)
{
Logger.LogString(2, " Replacing body of {0}.{0} (bool {1}) ... ", typeDef.Name, altCtor.Parameters[0].Name);
}
else
{
Logger.LogString(2, " Adding {0}.{0} (bool useCompiledXaml) ... ", typeDef.Name);
altCtor = new MethodDefinition(".ctor",
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName, module.TypeSystem.Void);
altCtor.Parameters.Add(new ParameterDefinition("useCompiledXaml", ParameterAttributes.None,
module.TypeSystem.Boolean));
}
var body = new MethodBody(altCtor);
body.InitLocals = true;
var il = body.GetILProcessor();
var br2 = Instruction.Create(OpCodes.Ldarg_0);
var ret = Instruction.Create(OpCodes.Ret);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Callvirt,
module.ImportReference(typeDef.BaseType.Resolve().GetConstructors().First(c => c.HasParameters == false)));
il.Emit(OpCodes.Nop);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Brfalse, br2);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Callvirt, initComp);
il.Emit(OpCodes.Br, ret);
il.Append(br2);
il.Emit(OpCodes.Callvirt, initCompRuntime);
il.Append(ret);
altCtor.Body = body;
if (!typeDef.Methods.Contains(altCtor))
{
typeDef.Methods.Add(altCtor);
}
Logger.LogLine(2, "done.");
}
Logger.LogLine(2, "");
}
Logger.LogString(1, "Writing the assembly... ");
assemblyDefinition.Write(new WriterParameters {
WriteSymbols = debug
});
}
Logger.LogLine(1, "done.");
return(true);
}
public override bool Execute(out IList <Exception> thrownExceptions)
{
thrownExceptions = null;
LoggingHelper.LogMessage(Normal, $"{new string(' ', 0)}Compiling Xaml, assembly: {Assembly}");
var skipassembly = !DefaultCompile;
bool success = true;
if (!File.Exists(Assembly))
{
LoggingHelper.LogMessage(Normal, $"{new string(' ', 2)}Assembly file not found. Skipping XamlC.");
return(true);
}
using (var fallbackResolver = DefaultAssemblyResolver == null ? new XamlCAssemblyResolver() : null)
{
var resolver = DefaultAssemblyResolver ?? fallbackResolver;
if (resolver is XamlCAssemblyResolver xamlCResolver)
{
if (ReferencePath != null)
{
var paths = ReferencePath.Select(p => IOPath.GetDirectoryName(p.Replace("//", "/"))).Distinct();
foreach (var searchpath in paths)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Adding searchpath {searchpath}");
xamlCResolver.AddSearchDirectory(searchpath);
}
}
}
else
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Ignoring dependency and reference paths due to an unsupported resolver");
}
var debug = DebugSymbols || (!string.IsNullOrEmpty(DebugType) && DebugType.ToLowerInvariant() != "none");
var readerParameters = new ReaderParameters
{
AssemblyResolver = resolver,
ReadWrite = !ValidateOnly,
ReadSymbols = debug && !ValidateOnly, // We don't need symbols for ValidateOnly, since we won't be writing
};
using (var assemblyDefinition = AssemblyDefinition.ReadAssembly(IOPath.GetFullPath(Assembly), readerParameters))
{
CustomAttribute xamlcAttr;
if (assemblyDefinition.HasCustomAttributes &&
(xamlcAttr =
assemblyDefinition.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Microsoft.Maui.Controls.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipassembly = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipassembly = false;
}
}
foreach (var module in assemblyDefinition.Modules)
{
var skipmodule = skipassembly;
if (module.HasCustomAttributes &&
(xamlcAttr =
module.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Microsoft.Maui.Controls.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skipmodule = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skipmodule = false;
}
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}Module: {module.Name}");
var resourcesToPrune = new List <EmbeddedResource>();
foreach (var resource in module.Resources.OfType <EmbeddedResource>())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Resource: {resource.Name}");
string classname;
if (!resource.IsXaml(module, out classname))
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}skipped.");
continue;
}
TypeDefinition typeDef = module.GetType(classname);
if (typeDef == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no type found... skipped.");
continue;
}
var skiptype = skipmodule;
if (typeDef.HasCustomAttributes &&
(xamlcAttr =
typeDef.CustomAttributes.FirstOrDefault(
ca => ca.AttributeType.FullName == "Microsoft.Maui.Controls.Xaml.XamlCompilationAttribute")) != null)
{
var options = (XamlCompilationOptions)xamlcAttr.ConstructorArguments[0].Value;
if ((options & XamlCompilationOptions.Skip) == XamlCompilationOptions.Skip)
{
skiptype = true;
}
if ((options & XamlCompilationOptions.Compile) == XamlCompilationOptions.Compile)
{
skiptype = false;
}
}
if (Type != null)
{
skiptype = !(Type == classname);
}
if (skiptype && !ForceCompile)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}has XamlCompilationAttribute set to Skip and not Compile... skipped.");
continue;
}
var initComp = typeDef.Methods.FirstOrDefault(md => md.Name == "InitializeComponent");
if (initComp == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}no InitializeComponent found... skipped.");
continue;
}
CustomAttribute xamlFilePathAttr;
var xamlFilePath = typeDef.HasCustomAttributes && (xamlFilePathAttr = typeDef.CustomAttributes.FirstOrDefault(ca => ca.AttributeType.FullName == "Microsoft.Maui.Controls.Xaml.XamlFilePathAttribute")) != null ?
(string)xamlFilePathAttr.ConstructorArguments[0].Value :
resource.Name;
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Parsing Xaml");
var rootnode = ParseXaml(resource.GetResourceStream(), typeDef);
if (rootnode == null)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}failed.");
continue;
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
hasCompiledXamlResources = true;
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Replacing {0}.InitializeComponent ()");
Exception e;
if (!TryCoreCompile(initComp, rootnode, xamlFilePath, LoggingHelper, out e))
{
success = false;
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}failed.");
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
if (e is BuildException be)
{
LoggingHelper.LogError("XamlC", be.Code.Code, be.HelpLink, xamlFilePath, be.XmlInfo?.LineNumber ?? 0, be.XmlInfo?.LinePosition ?? 0, 0, 0, ErrorMessages.ResourceManager.GetString(be.Code.ErrorMessageKey), be.MessageArgs);
}
else if (e is XamlParseException xpe) //shouldn't happen anymore
{
LoggingHelper.LogError("XamlC", null, xpe.HelpLink, xamlFilePath, xpe.XmlInfo.LineNumber, xpe.XmlInfo.LinePosition, 0, 0, xpe.Message);
}
else if (e is XmlException xe)
{
LoggingHelper.LogError("XamlC", null, xe.HelpLink, xamlFilePath, xe.LineNumber, xe.LinePosition, 0, 0, xe.Message);
}
else
{
LoggingHelper.LogError("XamlC", null, e.HelpLink, xamlFilePath, 0, 0, 0, 0, e.Message);
}
LoggingHelper.LogMessage(Low, e.StackTrace);
continue;
}
if (Type != null)
{
InitCompForType = initComp;
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
if (ValidateOnly)
{
continue;
}
if (OptimizeIL)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Optimizing IL");
initComp.Body.Optimize();
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
resourcesToPrune.Add(resource);
}
if (hasCompiledXamlResources)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Changing the module MVID");
module.Mvid = Guid.NewGuid();
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}done.");
}
if (!KeepXamlResources)
{
if (resourcesToPrune.Any())
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 4)}Removing compiled xaml resources");
}
foreach (var resource in resourcesToPrune)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Removing {resource.Name}");
module.Resources.Remove(resource);
LoggingHelper.LogMessage(Low, $"{new string(' ', 8)}done.");
}
}
}
if (ValidateOnly)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}ValidateOnly=True. Skipping writing assembly.");
return(success);
}
if (!hasCompiledXamlResources)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}No compiled resources. Skipping writing assembly.");
return(success);
}
LoggingHelper.LogMessage(Low, $"{new string(' ', 0)}Writing the assembly");
try
{
assemblyDefinition.Write(new WriterParameters
{
WriteSymbols = debug,
});
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}done.");
}
catch (Exception e)
{
LoggingHelper.LogMessage(Low, $"{new string(' ', 2)}failed.");
LoggingHelper.LogErrorFromException(e);
(thrownExceptions = thrownExceptions ?? new List <Exception>()).Add(e);
LoggingHelper.LogMessage(Low, e.StackTrace);
success = false;
}
}
}
return(success);
}
