public XamlRuntimeContext(IXamlType definition, IXamlType constructedType,
XamlLanguageEmitMappings <TBackendEmitter, TEmitResult> mappings,
Action <XamlRuntimeContext <TBackendEmitter, TEmitResult>, TBackendEmitter> factory)
{
ContextType = definition.MakeGenericType(constructedType);
IXamlField Get(string s) =>
ContextType.Fields.FirstOrDefault(f => f.Name == s);
IXamlMethod GetMethod(string s) =>
ContextType.Methods.FirstOrDefault(f => f.Name == s);
RootObjectField = Get(XamlRuntimeContextDefintion.RootObjectFieldName);
IntermediateRootObjectField = Get(XamlRuntimeContextDefintion.IntermediateRootObjectFieldName);
ParentListField = Get(XamlRuntimeContextDefintion.ParentListFieldName);
PropertyTargetObject = Get(XamlRuntimeContextDefintion.ProvideTargetObjectName);
PropertyTargetProperty = Get(XamlRuntimeContextDefintion.ProvideTargetPropertyName);
PushParentMethod = GetMethod(XamlRuntimeContextDefintion.PushParentMethodName);
PopParentMethod = GetMethod(XamlRuntimeContextDefintion.PopParentMethodName);
Constructor = ContextType.Constructors.First();
Factory = il => factory(this, il);
if (mappings.ContextFactoryCallback != null)
{
Factory = il =>
{
factory(this, il);
mappings.ContextFactoryCallback(this, il);
}
}
;
}
}
IXamlType LookupConverter(IXamlType type)
{
foreach (var p in _converters)
{
if (p.Key.Equals(type))
{
return(p.Value);
}
}
if (type.GenericTypeDefinition?.Equals(_avaloniaList) == true)
{
return(_avaloniaListConverter.MakeGenericType(type.GenericArguments[0]));
}
return(null);
}
public static IXamlType MakeGenericType(this IXamlType type, params IXamlType[] typeArguments) => type.MakeGenericType(typeArguments);
static XamlAstClrTypeReference ResolveTypeCore(AstTransformationContext context,
string xmlns, string name, bool isMarkupExtension, List <XamlAstXmlTypeReference> typeArguments, IXamlLineInfo lineInfo,
bool strict)
{
if (typeArguments == null)
{
typeArguments = new List <XamlAstXmlTypeReference>();
}
var targs = typeArguments
.Select(ta =>
ResolveType(context, ta.XmlNamespace, ta.Name, false, ta.GenericArguments, lineInfo, strict)
?.Type)
.ToList();
IXamlType Attempt(Func <string, IXamlType> cb, string xname)
{
var suffix = (typeArguments.Count != 0) ? ("`" + typeArguments.Count) : "";
if (isMarkupExtension)
{
return(cb(xname + "Extension" + suffix) ?? cb(xname + suffix));
}
else
{
return(cb(xname + suffix) ?? cb(xname + "Extension" + suffix));
}
}
IXamlType found = null;
// Try to resolve from system
if (xmlns == XamlNamespaces.Xaml2006)
{
found = context.Configuration.TypeSystem.FindType("System." + name);
}
if (found == null)
{
var resolvedNamespaces = NamespaceInfoHelper.TryResolve(context.Configuration, xmlns);
if (resolvedNamespaces?.Count > 0)
{
found = Attempt(formedName =>
{
foreach (var resolvedNs in resolvedNamespaces)
{
var rname = resolvedNs.ClrNamespace + "." + formedName;
IXamlType subRes = null;
if (resolvedNs.Assembly != null)
{
subRes = resolvedNs.Assembly.FindType(rname);
}
else if (resolvedNs.AssemblyName != null)
{
subRes = context.Configuration.TypeSystem.FindType(rname, resolvedNs.AssemblyName);
}
else
{
foreach (var assembly in context.Configuration.TypeSystem.Assemblies)
{
subRes = assembly.FindType(rname);
if (subRes != null)
{
break;
}
}
}
if (subRes != null)
{
return(subRes);
}
}
return(null);
}, name);
}
}
if (typeArguments.Count != 0)
{
found = found?.MakeGenericType(targs);
}
if (found != null)
{
return(new XamlAstClrTypeReference(lineInfo, found,
isMarkupExtension || found.Name.EndsWith("Extension")));
}
if (strict)
{
throw new XamlParseException(
$"Unable to resolve type {name} from namespace {xmlns}", lineInfo);
}
return(null);
}
