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//
// ResolveFromXmlStep.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// (C) 2006 Jb Evain
// (C) 2007 Novell, Inc.
// Copyright 2013 Xamarin Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Diagnostics;
using System.Text;
using System.Xml.XPath;
using Mono.Cecil;
namespace Mono.Linker.Steps
{
public class ResolveFromXmlStep : ProcessLinkerXmlStepBase
{
const string NamespaceElementName = "namespace";
const string _required = "required";
const string _preserve = "preserve";
const string _accessors = "accessors";
static readonly string[] _accessorsAll = new string[] { "all" };
static readonly char[] _accessorsSep = new char[] { ';' };
public ResolveFromXmlStep (XPathDocument document, string xmlDocumentLocation)
: base (document, xmlDocumentLocation)
{
}
public ResolveFromXmlStep (XPathDocument document, EmbeddedResource resource, AssemblyDefinition resourceAssembly, string xmlDocumentLocation = "<unspecified>")
: base (document, resource, resourceAssembly, xmlDocumentLocation)
{
}
#if !FEATURE_ILLINK
protected override bool ShouldProcessElement (XPathNavigator nav) => true;
#endif
protected override void Process ()
{
ProcessXml (Context.StripDescriptors, Context.IgnoreDescriptors);
}
protected override void ProcessAssembly (AssemblyDefinition assembly, XPathNodeIterator iterator, bool warnOnUnresolvedTypes)
{
#if !FEATURE_ILLINK
if (IsExcluded (iterator.Current))
return;
#endif
if (GetTypePreserve (iterator.Current) == TypePreserve.All) {
foreach (var type in assembly.MainModule.Types)
MarkAndPreserveAll (type);
} else {
ProcessTypes (assembly, iterator, warnOnUnresolvedTypes);
ProcessNamespaces (assembly, iterator);
}
}
void ProcessNamespaces (AssemblyDefinition assembly, XPathNodeIterator iterator)
{
iterator = iterator.Current.SelectChildren (NamespaceElementName, XmlNamespace);
while (iterator.MoveNext ()) {
if (!ShouldProcessElement (iterator.Current))
continue;
string fullname = GetFullName (iterator.Current);
bool foundMatch = false;
foreach (TypeDefinition type in assembly.MainModule.Types) {
if (type.Namespace != fullname)
continue;
foundMatch = true;
MarkAndPreserveAll (type);
}
if (!foundMatch) {
Context.LogWarning ($"Could not find any type in namespace '{fullname}'", 2044, _xmlDocumentLocation);
}
}
}
void MarkAndPreserveAll (TypeDefinition type)
{
Annotations.Mark (type, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
Annotations.SetPreserve (type, TypePreserve.All);
if (!type.HasNestedTypes)
return;
foreach (TypeDefinition nested in type.NestedTypes)
MarkAndPreserveAll (nested);
}
protected override TypeDefinition ProcessExportedType (ExportedType exported, AssemblyDefinition assembly)
{
MarkingHelpers.MarkExportedType (exported, assembly.MainModule, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
return base.ProcessExportedType (exported, assembly);
}
protected override void ProcessType (TypeDefinition type, XPathNavigator nav)
{
Debug.Assert (ShouldProcessElement (nav));
#if !FEATURE_ILLINK
if (IsExcluded (nav))
return;
#endif
TypePreserve preserve = GetTypePreserve (nav);
if (preserve != TypePreserve.Nothing)
Annotations.SetPreserve (type, preserve);
bool required = IsRequired (nav);
ProcessTypeChildren (type, nav, required);
if (!required)
return;
if (Annotations.IsMarked (type)) {
var duplicateLevel = preserve != TypePreserve.Nothing ? preserve : nav.HasChildren ? TypePreserve.Nothing : TypePreserve.All;
}
Annotations.Mark (type, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
if (type.IsNested) {
var currentType = type;
while (currentType.IsNested) {
var parent = currentType.DeclaringType;
Context.Annotations.Mark (parent, new DependencyInfo (DependencyKind.DeclaringType, currentType));
currentType = parent;
}
}
}
static TypePreserve GetTypePreserve (XPathNavigator nav)
{
string attribute = GetAttribute (nav, _preserve);
if (string.IsNullOrEmpty (attribute))
return nav.HasChildren ? TypePreserve.Nothing : TypePreserve.All;
if (Enum.TryParse (attribute, true, out TypePreserve result))
return result;
return TypePreserve.Nothing;
}
#if !FEATURE_ILLINK
protected override void ProcessField (TypeDefinition type, XPathNavigator nav)
{
if (IsExcluded (nav))
return;
base.ProcessField (type, nav);
}
#endif
protected override void ProcessField (TypeDefinition type, FieldDefinition field, XPathNavigator nav)
{
if (Annotations.IsMarked (field))
Context.LogWarning ($"Duplicate preserve of '{field.FullName}'", 2025, _xmlDocumentLocation);
Context.Annotations.Mark (field, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
}
#if !FEATURE_ILLINK
protected override void ProcessMethod (TypeDefinition type, XPathNavigator nav, object customData)
{
if (IsExcluded (nav))
return;
base.ProcessMethod (type, nav, customData);
}
#endif
protected override void ProcessMethod (TypeDefinition type, MethodDefinition method, XPathNavigator nav, object customData)
{
if (Annotations.IsMarked (method))
Context.LogWarning ($"Duplicate preserve of '{method.GetDisplayName ()}'", 2025, _xmlDocumentLocation);
Annotations.Mark (method, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
Annotations.MarkIndirectlyCalledMethod (method);
Annotations.SetAction (method, MethodAction.Parse);
if (!(bool) customData)
Annotations.AddPreservedMethod (type, method);
}
void ProcessMethodIfNotNull (TypeDefinition type, MethodDefinition method, object customData)
{
if (method == null)
return;
ProcessMethod (type, method, null, customData);
}
protected override MethodDefinition GetMethod (TypeDefinition type, string signature)
{
if (type.HasMethods)
foreach (MethodDefinition meth in type.Methods)
if (signature == GetMethodSignature (meth, false))
return meth;
return null;
}
public static string GetMethodSignature (MethodDefinition meth, bool includeGenericParameters)
{
StringBuilder sb = new StringBuilder ();
sb.Append (meth.ReturnType.FullName);
sb.Append (" ");
sb.Append (meth.Name);
if (includeGenericParameters && meth.HasGenericParameters) {
sb.Append ("`");
sb.Append (meth.GenericParameters.Count);
}
sb.Append ("(");
if (meth.HasParameters) {
for (int i = 0; i < meth.Parameters.Count; i++) {
if (i > 0)
sb.Append (",");
sb.Append (meth.Parameters[i].ParameterType.FullName);
}
}
sb.Append (")");
return sb.ToString ();
}
#if !FEATURE_ILLINK
protected override void ProcessEvent (TypeDefinition type, XPathNavigator nav, object customData)
{
if (IsExcluded (nav))
return;
base.ProcessEvent (type, nav, customData);
}
#endif
protected override void ProcessEvent (TypeDefinition type, EventDefinition @event, XPathNavigator nav, object customData)
{
if (Annotations.IsMarked (@event))
Context.LogWarning ($"Duplicate preserve of '{@event.FullName}'", 2025, _xmlDocumentLocation);
Annotations.Mark (@event, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
ProcessMethod (type, @event.AddMethod, null, customData);
ProcessMethod (type, @event.RemoveMethod, null, customData);
ProcessMethodIfNotNull (type, @event.InvokeMethod, customData);
}
#if !FEATURE_ILLINK
protected override void ProcessProperty (TypeDefinition type, XPathNavigator nav, object customData)
{
if (IsExcluded (nav))
return;
base.ProcessProperty (type, nav, customData);
}
#endif
protected override void ProcessProperty (TypeDefinition type, PropertyDefinition property, XPathNavigator nav, object customData, bool fromSignature)
{
string[] accessors = fromSignature ? GetAccessors (nav) : _accessorsAll;
if (Annotations.IsMarked (property))
Context.LogWarning ($"Duplicate preserve of '{property.FullName}'", 2025, _xmlDocumentLocation);
Annotations.Mark (property, new DependencyInfo (DependencyKind.XmlDescriptor, _xmlDocumentLocation));
ProcessPropertyAccessors (type, property, accessors, customData);
}
void ProcessPropertyAccessors (TypeDefinition type, PropertyDefinition property, string[] accessors, object customData)
{
if (Array.IndexOf (accessors, "all") >= 0) {
ProcessMethodIfNotNull (type, property.GetMethod, customData);
ProcessMethodIfNotNull (type, property.SetMethod, customData);
return;
}
if (property.GetMethod != null && Array.IndexOf (accessors, "get") >= 0)
ProcessMethod (type, property.GetMethod, null, customData);
else if (property.GetMethod == null)
Context.LogWarning ($"Could not find the get accessor of property '{property.Name}' on type '{type.FullName}'", 2018, _xmlDocumentLocation);
if (property.SetMethod != null && Array.IndexOf (accessors, "set") >= 0)
ProcessMethod (type, property.SetMethod, null, customData);
else if (property.SetMethod == null)
Context.LogWarning ($"Could not find the set accessor of property '{property.Name}' in type '{type.FullName}' specified in {_xmlDocumentLocation}", 2019, _xmlDocumentLocation);
}
protected override AssemblyDefinition GetAssembly (LinkContext context, AssemblyNameReference assemblyName)
{
var assembly = context.Resolve (assemblyName);
if (assembly != null)
ProcessReferences (assembly);
return assembly;
}
static bool IsRequired (XPathNavigator nav)
{
string attribute = GetAttribute (nav, _required);
if (attribute == null || attribute.Length == 0)
return true;
return bool.TryParse (attribute, out bool result) && result;
}
protected static string[] GetAccessors (XPathNavigator nav)
{
string accessorsValue = GetAttribute (nav, _accessors);
if (accessorsValue != null) {
string[] accessors = accessorsValue.Split (
_accessorsSep, StringSplitOptions.RemoveEmptyEntries);
if (accessors.Length > 0) {
for (int i = 0; i < accessors.Length; ++i)
accessors[i] = accessors[i].ToLower ();
return accessors;
}
}
return _accessorsAll;
}
#if !FEATURE_ILLINK
protected virtual bool IsExcluded (XPathNavigator nav)
{
var value = GetAttribute (nav, "feature");
if (string.IsNullOrEmpty (value))
return false;
return Context.IsFeatureExcluded (value);
}
#endif
}
}
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