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using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml;
using Mono.Cecil;
using Mono.Cecil.Rocks;
using Xamarin.Forms.Xaml;
namespace Xamarin.Forms.Build.Tasks
{
static class XmlTypeExtensions
{
public static TypeReference GetTypeReference (string namespaceURI, string typename, ModuleDefinition module, IXmlLineInfo xmlInfo)
{
return new XmlType (namespaceURI, typename, null).GetTypeReference (module, xmlInfo);
}
public static TypeReference GetTypeReference(this XmlType xmlType, ModuleDefinition module, IXmlLineInfo xmlInfo)
{
var namespaceURI = xmlType.NamespaceUri;
var elementName = xmlType.Name;
var typeArguments = xmlType.TypeArguments;
List<Tuple<string, string>> lookupAssemblies = new List<Tuple<string, string>>(); //assembly, namespace
List<string> lookupNames = new List<string>();
if (!XmlnsHelper.IsCustom(namespaceURI))
{
lookupAssemblies.Add(new Tuple<string, string>("Xamarin.Forms.Core", "Xamarin.Forms"));
lookupAssemblies.Add(new Tuple<string, string>("Xamarin.Forms.Xaml", "Xamarin.Forms.Xaml"));
}
else if (namespaceURI == "http://schemas.microsoft.com/winfx/2009/xaml" ||
namespaceURI == "http://schemas.microsoft.com/winfx/2006/xaml")
{
lookupAssemblies.Add(new Tuple<string, string>("Xamarin.Forms.Xaml", "Xamarin.Forms.Xaml"));
lookupAssemblies.Add(new Tuple<string, string>("mscorlib", "System"));
lookupAssemblies.Add(new Tuple<string, string>("System", "System"));
}
else
{
string ns;
string typename;
string asmstring;
string targetPlatform;
XmlnsHelper.ParseXmlns(namespaceURI, out typename, out ns, out asmstring, out targetPlatform);
asmstring = asmstring ?? module.Assembly.Name.Name;
lookupAssemblies.Add(new Tuple<string, string>(asmstring, ns));
}
lookupNames.Add(elementName);
if (namespaceURI == "http://schemas.microsoft.com/winfx/2009/xaml")
lookupNames.Add(elementName + "Extension");
for (var i = 0; i < lookupNames.Count; i++)
{
var name = lookupNames[i];
if (name.Contains(":"))
name = name.Substring(name.LastIndexOf(':') + 1);
if (typeArguments != null)
name += "`" + typeArguments.Count; //this will return an open generic Type
lookupNames[i] = name;
}
TypeReference type = null;
foreach (var asm in lookupAssemblies)
{
if (type != null)
break;
foreach (var name in lookupNames)
{
if (type != null)
break;
var assemblydefinition = module.Assembly.Name.Name == asm.Item1
? module.Assembly
: module.AssemblyResolver.Resolve(asm.Item1);
type = assemblydefinition.MainModule.GetType(asm.Item2, name);
if (type == null)
{
var exportedtype =
assemblydefinition.MainModule.ExportedTypes.FirstOrDefault(
(ExportedType arg) => arg.IsForwarder && arg.Namespace == asm.Item2 && arg.Name == name);
if (exportedtype != null)
type = exportedtype.Resolve();
}
}
}
if (type != null && typeArguments != null && type.HasGenericParameters)
{
type =
module.Import(type)
.MakeGenericInstanceType(typeArguments.Select(x => GetTypeReference(x, module, xmlInfo)).ToArray());
}
if (type == null)
throw new XamlParseException(string.Format("Type {0} not found in xmlns {1}", elementName, namespaceURI), xmlInfo);
return module.Import(type);
}
}
}
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