public static bool TryConvertMarkupExtension(XamlIlAstTransformationContext context,
IXamlIlAstValueNode node, out XamlIlMarkupExtensionNode o)
{
o = null;
var nodeType = node.Type.GetClrType();
var candidates = GetMarkupExtensionProvideValueAlternatives(context, nodeType).ToList();
var so = context.Configuration.WellKnownTypes.Object;
var sp = context.Configuration.TypeMappings.ServiceProvider;
// Try non-object variant first and variants without IServiceProvider argument first
var provideValue = candidates.FirstOrDefault(m => m.Parameters.Count == 0 && !m.ReturnType.Equals(so))
?? candidates.FirstOrDefault(m => m.Parameters.Count == 0)
?? candidates.FirstOrDefault(m =>
m.Parameters.Count == 1 && m.Parameters[0].Equals(sp) && !m.ReturnType.Equals(so))
?? candidates.FirstOrDefault(m => m.Parameters.Count == 1 && m.Parameters[0].Equals(sp));
if (provideValue == null)
{
if (node.Type.IsMarkupExtension)
{
throw new XamlIlParseException(
$"{node.Type.GetClrType().GetFqn()} was resolved as markup extension, but doesn't have a matching ProvideValue/ProvideTypedValue method",
node.Type);
}
return(false);
}
o = new XamlIlMarkupExtensionNode(node, provideValue, node);
return(true);
}
public XamlIlValueWithManipulationNode(IXamlIlLineInfo lineInfo,
IXamlIlAstValueNode value,
IXamlIlAstManipulationNode manipulation) : base(lineInfo, value)
{
Value = value;
Manipulation = manipulation;
}
public XamlIlLoadMethodDelegateNode(IXamlIlLineInfo lineInfo, IXamlIlAstValueNode value,
IXamlIlType delegateType, IXamlIlMethod method) : base(lineInfo, value)
{
DelegateType = delegateType;
Method = method;
Type = new XamlIlAstClrTypeReference(value, DelegateType);
}
public XamlIlPropertyAssignmentNode(IXamlIlLineInfo lineInfo,
IXamlIlProperty property, IXamlIlAstValueNode value)
: base(lineInfo)
{
Property = property;
Value = value;
}
public static bool TryConvertMarkupExtension(XamlIlAstTransformationContext context,
IXamlIlAstValueNode node, IXamlIlProperty prop, out XamlIlMarkupExtensionNode o)
{
o = null;
var nodeType = node.Type.GetClrType();
var candidates = nodeType.Methods.Where(m => m.Name == "ProvideValue" && m.IsPublic && !m.IsStatic)
.ToList();
var so = context.Configuration.WellKnownTypes.Object;
var sp = context.Configuration.TypeMappings.ServiceProvider;
// Try non-object variant first and variants without IServiceProvider argument first
var provideValue = candidates.FirstOrDefault(m => m.Parameters.Count == 0 && !m.ReturnType.Equals(so))
?? candidates.FirstOrDefault(m => m.Parameters.Count == 0)
?? candidates.FirstOrDefault(m =>
m.Parameters.Count == 1 && m.Parameters[0].Equals(sp) && !m.ReturnType.Equals(so))
?? candidates.FirstOrDefault(m => m.Parameters.Count == 1 && m.Parameters[0].Equals(sp));
if (provideValue == null)
{
return(false);
}
o = new XamlIlMarkupExtensionNode(node, prop, provideValue, node, null);
return(true);
}
public static bool CustomValueConverter(XamlIlAstTransformationContext context,
IXamlIlAstValueNode node, IXamlIlType type, out IXamlIlAstValueNode result)
{
if (type.FullName == "System.TimeSpan" &&
node is XamlIlAstTextNode tn &&
!tn.Text.Contains(":"))
{
var seconds = double.Parse(tn.Text, CultureInfo.InvariantCulture);
result = new XamlIlStaticOrTargetedReturnMethodCallNode(tn,
type.FindMethod("FromSeconds", type, false, context.Configuration.WellKnownTypes.Double),
new[]
{
new XamlIlConstantNode(tn, context.Configuration.WellKnownTypes.Double, seconds)
});
return(true);
}
if (type.FullName == "Avalonia.AvaloniaProperty")
{
var scope = context.ParentNodes().OfType <AvaloniaXamlIlTargetTypeMetadataNode>().FirstOrDefault();
if (scope == null)
{
throw new XamlIlLoadException("Unable to find the parent scope for AvaloniaProperty lookup", node);
}
if (!(node is XamlIlAstTextNode text))
{
throw new XamlIlLoadException("Property should be a text node", node);
}
result = XamlIlAvaloniaPropertyHelper.CreateNode(context, text.Text, scope.TargetType, text);
return(true);
}
result = null;
return(false);
}
public XamlIlAstLocalInitializationNodeEmitter(IXamlIlLineInfo lineInfo,
IXamlIlAstValueNode value,
XamlIlAstCompilerLocalNode local) : base(lineInfo, value)
{
Value = value;
Local = local;
}
static IXamlIlAstValueNode FindAndRemoveKey(IXamlIlAstValueNode value)
{
IXamlIlAstValueNode keyNode = null;
bool IsKeyDirective(object node) => node is XamlIlAstXmlDirective d &&
d.Namespace == XamlNamespaces.Xaml2006 &&
d.Name == "Key";
void ProcessDirective(object d)
{
var directive = (XamlIlAstXmlDirective)d;
if (directive.Values.Count != 1)
{
throw new XamlIlParseException("Invalid number of arguments for x:Key directive",
directive);
}
keyNode = directive.Values[0];
}
void ProcessDirectiveCandidateList(IList nodes)
{
var d = nodes.OfType <object>().FirstOrDefault(IsKeyDirective);
if (d != null)
{
ProcessDirective(d);
nodes.Remove(d);
}
}
IXamlIlAstManipulationNode VisitManipulationNode(IXamlIlAstManipulationNode man)
{
if (IsKeyDirective(man))
{
ProcessDirective(man);
return(new XamlIlManipulationGroupNode(man));
}
if (man is XamlIlManipulationGroupNode grp)
{
ProcessDirectiveCandidateList(grp.Children);
}
if (man is XamlIlObjectInitializationNode init)
{
init.Manipulation = VisitManipulationNode(init.Manipulation);
}
return(man);
}
if (value is XamlIlAstObjectNode astObject)
{
ProcessDirectiveCandidateList(astObject.Children);
}
else if (value is XamlIlValueWithManipulationNode vman)
{
vman.Manipulation = VisitManipulationNode(vman.Manipulation);
}
return(keyNode);
}
public XamlIlMarkupExtensionNode(IXamlIlLineInfo lineInfo, IXamlIlMethod provideValue,
IXamlIlAstValueNode value) : base(lineInfo)
{
ProvideValue = provideValue;
Value = value;
Type = new XamlIlAstClrTypeReference(this, ProvideValue.ReturnType, false);
}
public XamlIlPropertyEqualsSelector(XamlIlSelectorNode previous,
IXamlIlProperty property,
IXamlIlAstValueNode value)
: base(previous)
{
Property = property;
Value = value;
}
public XamlIlMarkupExtensionNode(IXamlIlLineInfo lineInfo, IXamlIlProperty property, IXamlIlMethod provideValue,
IXamlIlAstValueNode value, IXamlIlWrappedMethod manipulation) : base(lineInfo)
{
Property = property;
ProvideValue = provideValue;
Value = value;
Manipulation = manipulation;
}
public XamlIlAstXamlPropertyValueNode(IXamlIlLineInfo lineInfo,
IXamlIlAstPropertyReference property, IXamlIlAstValueNode value) : base(lineInfo)
{
Property = property;
Values = new List <IXamlIlAstValueNode> {
value
};
}
public IXamlIlAstNode Transform(XamlIlAstTransformationContext context, IXamlIlAstNode node)
{
if (node is XamlIlPropertyAssignmentNode pa &&
pa.Property.Name == "Name" &&
pa.Property.DeclaringType.FullName == "Avalonia.StyledElement")
{
if (context.ParentNodes().FirstOrDefault() is XamlIlManipulationGroupNode mg &&
mg.Children.OfType <AvaloniaNameScopeRegistrationXamlIlNode>().Any())
{
return(node);
}
IXamlIlAstValueNode value = null;
for (var c = 0; c < pa.Values.Count; c++)
{
if (pa.Values[c].Type.GetClrType().Equals(context.Configuration.WellKnownTypes.String))
{
value = pa.Values[c];
if (!(value is XamlIlAstTextNode))
{
var local = new XamlIlAstCompilerLocalNode(value);
// Wrap original in local initialization
pa.Values[c] = new XamlIlAstLocalInitializationNodeEmitter(value, value, local);
// Use local
value = local;
}
break;
}
}
if (value != null)
{
return new XamlIlManipulationGroupNode(pa)
{
Children =
{
pa,
new AvaloniaNameScopeRegistrationXamlIlNode(value, context.GetAvaloniaTypes())
}
}
}
;
}
if (!context.ParentNodes().Any() &&
node is XamlIlValueWithManipulationNode mnode)
{
mnode.Manipulation = new XamlIlManipulationGroupNode(mnode,
new[]
{
mnode.Manipulation,
new HandleRootObjectScopeNode(mnode, context.GetAvaloniaTypes())
});
}
return(node);
}
public XamlIlDeferredContentNode(IXamlIlAstValueNode value,
XamlIlTransformerConfiguration config) : base(value)
{
Value = value;
var funcType = config.TypeSystem.GetType("System.Func`2")
.MakeGenericType(config.TypeMappings.ServiceProvider, config.WellKnownTypes.Object);
Type = new XamlIlAstClrTypeReference(value, funcType);
}
public static bool TryGetCorrectlyTypedValue(XamlIlAstTransformationContext context,
IXamlIlAstValueNode node, IXamlIlType type, out IXamlIlAstValueNode rv)
{
if (type.IsAssignableFrom(node.Type.GetClrType()))
{
rv = node;
return(true);
}
return(TryConvertValue(context, node, type, null, out rv));
}
void CompileBuild(IXamlIlAstValueNode rootInstance, Func <string, IXamlIlType, IXamlIlTypeBuilder> createSubType,
IXamlIlEmitter codeGen, XamlIlContext context, IXamlIlMethod compiledPopulate)
{
var needContextLocal = !(rootInstance is XamlIlAstNewClrObjectNode newObj && newObj.Arguments.Count == 0);
var emitContext = InitCodeGen(createSubType, codeGen, context, needContextLocal);
var rv = codeGen.DefineLocal(rootInstance.Type.GetClrType());
emitContext.Emit(rootInstance, codeGen, rootInstance.Type.GetClrType());
codeGen
.Emit(OpCodes.Stloc, rv)
.Emit(OpCodes.Ldarg_0)
.Emit(OpCodes.Ldloc, rv)
.Emit(OpCodes.Call, compiledPopulate)
.Emit(OpCodes.Ldloc, rv)
.Emit(OpCodes.Ret);
}
public static bool TryCallAdd(XamlIlAstTransformationContext context,
IXamlIlProperty targetProperty, IXamlIlType targetPropertyType, IXamlIlAstValueNode value, out IXamlIlAstManipulationNode rv)
{
var so = context.Configuration.WellKnownTypes.Object;
rv = null;
IXamlIlWrappedMethod FindAdderImpl(IXamlIlType targetType, IXamlIlType valueType, IXamlIlType keyType = null)
{
var candidates = targetType.FindMethods(m =>
!m.IsStatic && m.IsPublic &&
(m.Name == "Add" || m.Name.EndsWith(".Add"))).ToList();
bool CheckArg(IXamlIlType argType, bool allowObj)
{
if (allowObj && argType.Equals(so))
{
return(true);
}
if (!allowObj && !argType.Equals(so) && argType.IsAssignableFrom(valueType))
{
return(true);
}
return(false);
}
foreach (var allowObj in new[] { false, true })
{
foreach (var m in candidates)
{
if (keyType == null && m.Parameters.Count == 1 &&
CheckArg(m.Parameters[0], allowObj))
{
return(new XamlIlWrappedMethod(m));
}
if (keyType != null && m.Parameters.Count == 2 &&
m.Parameters[0].IsAssignableFrom(keyType) &&
CheckArg(m.Parameters[1], allowObj))
{
return(new XamlIlWrappedMethod(m));
}
}
}
return(null);
}
IXamlIlWrappedMethod FindAdderWithCast(IXamlIlType originalType, IXamlIlType newTargetType, IXamlIlType valueType)
{
var m = FindAdderImpl(newTargetType, valueType);
if (m == null)
{
return(null);
}
return(new XamlIlWrappedMethodWithCasts(m, new[] { originalType, m.ParametersWithThis[1] }));
}
IXamlIlWrappedMethod FindAdder(IXamlIlType valueType, IXamlIlType keyType = null)
{
if (keyType == null)
{
if (targetPropertyType.Equals(context.Configuration.WellKnownTypes.IEnumerable))
{
return(FindAdderWithCast(targetPropertyType, context.Configuration.WellKnownTypes.IList,
valueType));
}
if (targetPropertyType.GenericTypeDefinition?.Equals(context.Configuration.WellKnownTypes
.IEnumerableT) == true)
{
return(FindAdderWithCast(
targetPropertyType,
context.Configuration.WellKnownTypes.IListOfT
.MakeGenericType(targetPropertyType.GenericArguments[0]), valueType));
}
}
return(FindAdderImpl(targetPropertyType, valueType, keyType));
}
if (TryConvertMarkupExtension(context, value, targetProperty, out var ext))
{
var adder = FindAdder(ext.ProvideValue.ReturnType);
if (adder != null)
{
ext.Manipulation = adder;
rv = ext;
return(true);
}
}
else
{
var vtype = value.Type.GetClrType();
IXamlIlAstValueNode keyNode = null;
bool IsKeyDirective(object node) => node is XamlIlAstXmlDirective d &&
d.Namespace == XamlNamespaces.Xaml2006 &&
d.Name == "Key";
void ProcessDirective(object d)
{
var directive = (XamlIlAstXmlDirective)d;
if (directive.Values.Count != 1)
{
throw new XamlIlParseException("Invalid number of arguments for x:Key directive",
directive);
}
keyNode = directive.Values[0];
}
void ProcessDirectiveCandidateList(IList nodes)
{
var d = nodes.OfType <object>().FirstOrDefault(IsKeyDirective);
if (d != null)
{
ProcessDirective(d);
nodes.Remove(d);
}
}
IXamlIlAstManipulationNode VisitManipulationNode(IXamlIlAstManipulationNode man)
{
if (IsKeyDirective(man))
{
ProcessDirective(man);
return(new XamlIlManipulationGroupNode(man));
}
if (man is XamlIlManipulationGroupNode grp)
{
ProcessDirectiveCandidateList(grp.Children);
}
if (man is XamlIlObjectInitializationNode init)
{
init.Manipulation = VisitManipulationNode(init.Manipulation);
}
return(man);
}
if (value is XamlIlAstObjectNode astObject)
{
ProcessDirectiveCandidateList(astObject.Children);
}
else if (value is XamlIlValueWithManipulationNode vman)
{
vman.Manipulation = VisitManipulationNode(vman.Manipulation);
}
var adder = FindAdder(vtype, keyNode?.Type.GetClrType());
if (adder != null)
{
var args = new List <IXamlIlAstValueNode>();
if (keyNode != null)
{
args.Add(keyNode);
}
args.Add(value);
rv = new XamlIlNoReturnMethodCallNode(value, adder, args);
if (targetProperty != null)
{
rv = new XamlIlPropertyValueManipulationNode(value, targetProperty, rv);
}
return(true);
}
}
return(false);
}
public XamlIlAstCompilerLocalNode(IXamlIlAstValueNode value) : this(value, value.Type.GetClrTypeReference())
{
}
public XamlIlAstNeedsParentStackValueNode(IXamlIlLineInfo lineInfo, IXamlIlAstValueNode value) : base(lineInfo, value)
{
}
public XamlIlAstImperativeValueManipulation(IXamlIlLineInfo lineInfo,
IXamlIlAstValueNode value, IXamlIlAstManipulationNode manipulation) : base(lineInfo)
{
Value = value;
Manipulation = manipulation;
}
public XamlIlAstRuntimeCastNode(IXamlIlLineInfo lineInfo, IXamlIlAstValueNode value, IXamlIlAstTypeReference castTo) : base(lineInfo)
{
Value = value;
Type = castTo;
}
public static bool TryCallAdd(XamlIlAstTransformationContext context,
IXamlIlProperty targetProperty, IXamlIlType targetPropertyType, IXamlIlAstValueNode value, out IXamlIlAstManipulationNode rv)
{
if (TryConvertMarkupExtension(context, value, targetProperty, out var ext))
{
var adder = new[] { ext.ProvideValue.ReturnType, context.Configuration.WellKnownTypes.Object }
.Select(argType => targetPropertyType.FindMethod(m =>
!m.IsStatic && m.IsPublic &&
(m.Name == "Add" || m.Name.EndsWith(".Add")) &&
m.Parameters.Count == 1 &&
m.Parameters[0].Equals(argType)))
.FirstOrDefault(m => m != null);
if (adder != null)
{
ext.Manipulation = adder;
rv = ext;
return(true);
}
}
if (context.Configuration.TryCallAdd(targetPropertyType, value, out var nret))
{
if (targetProperty != null)
{
rv = new XamlIlPropertyValueManipulationNode(value, targetProperty, nret);
}
else
{
rv = nret;
}
return(true);
}
rv = null;
return(false);
}
public ScopeRegistrationNode(IXamlIlAstValueNode value) : base(value)
{
Value = value;
}
protected XamlIlValueWithSideEffectNodeBase(IXamlIlLineInfo lineInfo, IXamlIlAstValueNode value) : base(lineInfo)
{
Value = value;
}
public XamlIlValueNodeWithBeginInit(IXamlIlAstValueNode value) : base(value, value)
{
}
public override void VisitChildren(Visitor visitor)
{
Value = (IXamlIlAstValueNode)Value.Visit(visitor);
}
public override void VisitChildren(IXamlIlAstVisitor visitor) => Name = (IXamlIlAstValueNode)Name.Visit(visitor);
public AvaloniaNameScopeRegistrationXamlIlNode(IXamlIlAstValueNode name, AvaloniaXamlIlWellKnownTypes types) : base(name)
{
_types = types;
Name = name;
}
public XamlIlToArrayNode(IXamlIlLineInfo lineInfo, IXamlIlAstTypeReference arrayType,
IXamlIlAstValueNode value) : base(lineInfo)
{
Type = arrayType;
Value = value;
}
public static bool TryConvertValue(XamlIlAstTransformationContext context,
IXamlIlAstValueNode node, IXamlIlType type, XamlIlAstClrProperty propertyContext,
out IXamlIlAstValueNode rv)
{
rv = null;
var cfg = context.Configuration;
// Since we are doing a conversion anyway, it makes sense to check for the underlying nullable type
if (type.GenericTypeDefinition?.Equals(cfg.WellKnownTypes.NullableT) == true)
{
type = type.GenericArguments[0];
}
if (cfg.CustomValueConverter?.Invoke(context, node, type, out rv) == true)
{
return(true);
}
var nodeType = node.Type.GetClrType();
// Implicit type converters
if (!nodeType.Equals(cfg.WellKnownTypes.String))
{
return(false);
}
if (node is XamlIlAstTextNode tn)
{
if (type.IsEnum)
{
if (TypeSystemHelpers.TryGetEnumValueNode(type, tn.Text, tn, out var enumConstantNode))
{
rv = enumConstantNode;
return(true);
}
}
// Well known types
if (TypeSystemHelpers.ParseConstantIfTypeAllows(tn.Text, type, tn, out var constantNode))
{
rv = constantNode;
return(true);
}
if (type.FullName == "System.Type")
{
var resolvedType = XamlIlTypeReferenceResolver.ResolveType(context, tn.Text, false, tn, true);
rv = new XamlIlTypeExtensionNode(tn, resolvedType, type);
return(true);
}
if (cfg.WellKnownTypes.Delegate.IsAssignableFrom(type))
{
var invoke = type.FindMethod(m => m.Name == "Invoke");
var rootType = context.RootObject.Type.GetClrType();
var handler =
rootType.FindMethod(tn.Text, invoke.ReturnType, false, invoke.Parameters.ToArray());
if (handler != null)
{
rv = new XamlIlLoadMethodDelegateNode(tn, context.RootObject, type, handler);
return(true);
}
}
}
IXamlIlAstValueNode CreateInvariantCulture() =>
new XamlIlStaticOrTargetedReturnMethodCallNode(node,
cfg.WellKnownTypes.CultureInfo.Methods.First(x =>
x.IsPublic && x.IsStatic && x.Name == "get_InvariantCulture"), null);
var candidates = type.Methods.Where(m => m.Name == "Parse" &&
m.ReturnType.Equals(type) &&
m.Parameters.Count > 0 &&
m.Parameters[0].Equals(cfg.WellKnownTypes.String)).ToList();
// Types with parse method
var parser = candidates.FirstOrDefault(m =>
m.Parameters.Count == 2 &&
(
m.Parameters[1].Equals(cfg.WellKnownTypes.CultureInfo) ||
m.Parameters[1].Equals(cfg.WellKnownTypes.IFormatProvider)
)
)
?? candidates.FirstOrDefault(m => m.Parameters.Count == 1);
if (parser != null)
{
var args = new List <IXamlIlAstValueNode> {
node
};
if (parser.Parameters.Count == 2)
{
args.Add(CreateInvariantCulture());
}
rv = new XamlIlStaticOrTargetedReturnMethodCallNode(node, parser, args);
return(true);
}
if (cfg.TypeMappings.TypeDescriptorContext != null)
{
IXamlIlType converterType = null;
if (propertyContext?.TypeConverters.TryGetValue(type, out converterType) != true)
{
var typeConverterAttribute =
cfg.GetCustomAttribute(type, cfg.TypeMappings.TypeConverterAttributes).FirstOrDefault();
if (typeConverterAttribute != null)
{
converterType = TryGetTypeConverterFromCustomAttribute(cfg, typeConverterAttribute);
}
}
if (converterType != null)
{
var converterMethod = converterType.FindMethod("ConvertFrom", cfg.WellKnownTypes.Object, false,
cfg.TypeMappings.TypeDescriptorContext, cfg.WellKnownTypes.CultureInfo,
cfg.WellKnownTypes.Object);
rv = new XamlIlAstNeedsParentStackValueNode(node,
new XamlIlAstRuntimeCastNode(node,
new XamlIlStaticOrTargetedReturnMethodCallNode(node, converterMethod,
new[]
{
new XamlIlAstNewClrObjectNode(node,
new XamlIlAstClrTypeReference(node, converterType, false), null,
new List <IXamlIlAstValueNode>()),
new XamlIlAstContextLocalNode(node, cfg.TypeMappings.TypeDescriptorContext),
CreateInvariantCulture(), node
}), new XamlIlAstClrTypeReference(node, type, false)));
return(true);
}
}
return(false);
}