protected override void DoEmit(XamlEmitContext <IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen)
{
if (_selectors.Count == 0)
{
throw new XamlLoadException("Invalid selector count", this);
}
if (_selectors.Count == 1)
{
_selectors[0].Emit(context, codeGen);
return;
}
var listType = context.Configuration.TypeSystem.FindType("System.Collections.Generic.List`1")
.MakeGenericType(base.Type.GetClrType());
var add = listType.FindMethod("Add", context.Configuration.WellKnownTypes.Void, false, Type.GetClrType());
codeGen
.Newobj(listType.FindConstructor());
foreach (var s in _selectors)
{
codeGen.Dup();
context.Emit(s, codeGen, Type.GetClrType());
codeGen.EmitCall(add, true);
}
EmitCall(context, codeGen,
m => m.Name == "Or" && m.Parameters.Count == 1 && m.Parameters[0].Name.StartsWith("IReadOnlyList"));
}
public virtual XamlILNodeEmitResult Emit(
XamlEmitContext <IXamlILEmitter, XamlILNodeEmitResult> context,
IXamlILEmitter codeGen)
{
codeGen.Newobj(_constructor);
return(XamlILNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlILNodeEmitResult Emit(XamlEmitContext <IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen)
{
foreach (var value in _values)
{
codeGen.Ldc_R8(value);
}
codeGen.Newobj(_constructor);
return(XamlILNodeEmitResult.Type(0, Type.GetClrType()));
}
private IXamlType EmitCreateAccessorFactoryDelegate(XamlIlEmitContext context, IXamlILEmitter codeGen)
{
var types = context.GetAvaloniaTypes();
var weakReferenceType = context.Configuration.TypeSystem.GetType("System.WeakReference`1").MakeGenericType(context.Configuration.WellKnownTypes.Object);
var funcType = context.Configuration.TypeSystem.GetType("System.Func`3").MakeGenericType(
weakReferenceType,
types.IPropertyInfo,
types.IPropertyAccessor);
codeGen.Newobj(funcType.Constructors.First(c =>
c.Parameters.Count == 2 &&
c.Parameters[0].Equals(context.Configuration.WellKnownTypes.Object)));
return(funcType);
}
public IXamlType EmitLoadIndexerAccessorFactory(XamlIlEmitContext context, IXamlILEmitter codeGen, IXamlAstValueNode value)
{
var intType = context.Configuration.TypeSystem.GetType("System.Int32");
if (_indexerClosureType is null)
{
_indexerClosureType = InitializeClosureType(context);
}
context.Emit(value, codeGen, intType);
codeGen.Newobj(_indexerClosureType.FindConstructor(new List <IXamlType> {
intType
}));
EmitLoadPropertyAccessorFactory(context, codeGen, _indexerClosureType, IndexerClosureFactoryMethodName, isStatic: false);
return(EmitCreateAccessorFactoryDelegate(context, codeGen));
}
public XamlILNodeEmitResult Emit(XamlEmitContext <IXamlILEmitter, XamlILNodeEmitResult> context, IXamlILEmitter codeGen)
{
codeGen.Newobj(_constructor);
codeGen
.Dup()
.Ldc_I4(_values.Count)
.EmitCall(_listSetCapacityMethod);
foreach (var value in _values)
{
codeGen.Dup();
context.Emit(value, codeGen, _elementType);
codeGen.EmitCall(_listAddMethod);
}
return(XamlILNodeEmitResult.Type(0, Type.GetClrType()));
}
