diff options
Diffstat (limited to 'Xamarin.Forms.Build.Tasks/CompiledConverters/TypeTypeConverter.cs')
-rw-r--r-- | Xamarin.Forms.Build.Tasks/CompiledConverters/TypeTypeConverter.cs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Xamarin.Forms.Build.Tasks/CompiledConverters/TypeTypeConverter.cs b/Xamarin.Forms.Build.Tasks/CompiledConverters/TypeTypeConverter.cs new file mode 100644 index 00000000..93c3ee58 --- /dev/null +++ b/Xamarin.Forms.Build.Tasks/CompiledConverters/TypeTypeConverter.cs @@ -0,0 +1,44 @@ +using System; +using System.Collections.Generic; +using System.Xml; + +using Mono.Cecil; +using Mono.Cecil.Cil; + +using Xamarin.Forms.Build.Tasks; +using Xamarin.Forms.Xaml; + +namespace Xamarin.Forms.Core.XamlC +{ + class TypeTypeConverter : ICompiledTypeConverter + { + public IEnumerable<Instruction> ConvertFromString(string value, ModuleDefinition module, BaseNode node) + { + if (string.IsNullOrEmpty(value)) + goto error; + + var split = value.Split(':'); + if (split.Length > 2) + goto error; + + XmlType xmlType; + if (split.Length == 2) + xmlType = new XmlType(node.NamespaceResolver.LookupNamespace(split[0]), split[1], null); + else + xmlType = new XmlType(node.NamespaceResolver.LookupNamespace(""), split[0], null); + + var typeRef = xmlType.GetTypeReference(module, (IXmlLineInfo)node); + if (typeRef == null) + goto error; + + var getTypeFromHandle = module.Import(typeof(Type).GetMethod("GetTypeFromHandle", new[] { typeof(RuntimeTypeHandle) })); + yield return Instruction.Create(OpCodes.Ldtoken, module.Import(typeRef)); + yield return Instruction.Create(OpCodes.Call, module.Import(getTypeFromHandle)); + yield break; + + error: + throw new XamlParseException($"Cannot convert \"{value}\" into {typeof(Type)}", node); + } + } + +}
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