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 static bool CustomValueConverter(AstTransformationContext context,
IXamlAstValueNode node, IXamlType type, out IXamlAstValueNode result)
{
if (!(node is XamlAstTextNode textNode))
{
result = null;
return(false);
}
var text = textNode.Text;
var types = context.GetAvaloniaTypes();
if (AvaloniaXamlIlLanguageParseIntrinsics.TryConvert(context, node, text, type, types, out result))
{
return(true);
}
if (type.FullName == "Avalonia.AvaloniaProperty")
{
var scope = context.ParentNodes().OfType <AvaloniaXamlIlTargetTypeMetadataNode>().FirstOrDefault();
if (scope == null)
{
throw new XamlX.XamlLoadException("Unable to find the parent scope for AvaloniaProperty lookup", node);
}
result = XamlIlAvaloniaPropertyHelper.CreateNode(context, text, scope.TargetType, node);
return(true);
}
result = null;
return(false);
}
public XamlIlAvaloniaPropertyFieldNode(AvaloniaXamlIlWellKnownTypes types,
IXamlLineInfo lineInfo, IXamlField field) : base(lineInfo)
{
_field = field;
AvaloniaPropertyType = XamlIlAvaloniaPropertyHelper.GetAvaloniaPropertyType(field,
types, lineInfo);
}
public static bool CustomValueConverter(AstTransformationContext context,
IXamlAstValueNode node, IXamlType type, out IXamlAstValueNode result)
{
if (!(node is XamlAstTextNode textNode))
{
result = null;
return(false);
}
var text = textNode.Text;
var types = context.GetAvaloniaTypes();
if (type.FullName == "System.TimeSpan")
{
var tsText = text.Trim();
if (!TimeSpan.TryParse(tsText, CultureInfo.InvariantCulture, out var timeSpan))
{
// // shorthand seconds format (ie. "0.25")
if (!tsText.Contains(":") && double.TryParse(tsText,
NumberStyles.Float | NumberStyles.AllowThousands,
CultureInfo.InvariantCulture, out var seconds))
{
timeSpan = TimeSpan.FromSeconds(seconds);
}
else
{
throw new XamlX.XamlLoadException($"Unable to parse {text} as a time span", node);
}
}
result = new XamlStaticOrTargetedReturnMethodCallNode(node,
type.FindMethod("FromTicks", type, false, types.Long),
new[] { new XamlConstantNode(node, types.Long, timeSpan.Ticks) });
return(true);
}
if (type.Equals(types.FontFamily))
{
result = new AvaloniaXamlIlFontFamilyAstNode(types, text, node);
return(true);
}
if (type.FullName == "Avalonia.AvaloniaProperty")
{
var scope = context.ParentNodes().OfType <AvaloniaXamlIlTargetTypeMetadataNode>().FirstOrDefault();
if (scope == null)
{
throw new XamlX.XamlLoadException("Unable to find the parent scope for AvaloniaProperty lookup", node);
}
result = XamlIlAvaloniaPropertyHelper.CreateNode(context, text, scope.TargetType, node);
return(true);
}
result = null;
return(false);
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!XamlIlAvaloniaPropertyHelper.Emit(context, codeGen, Property))
{
throw new XamlIlLoadException(Property.Name + " is not an AvaloniaProperty", this);
}
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public static bool CustomValueConverter(AstTransformationContext context,
IXamlAstValueNode node, IXamlType type, out IXamlAstValueNode result)
{
if (!(node is XamlAstTextNode textNode))
{
result = null;
return(false);
}
var text = textNode.Text;
var types = context.GetAvaloniaTypes();
if (type.FullName == "System.TimeSpan")
{
var tsText = text.Trim();
if (!TimeSpan.TryParse(tsText, CultureInfo.InvariantCulture, out var timeSpan))
{
// // shorthand seconds format (ie. "0.25")
if (!tsText.Contains(":") && double.TryParse(tsText,
NumberStyles.Float | NumberStyles.AllowThousands,
CultureInfo.InvariantCulture, out var seconds))
{
timeSpan = TimeSpan.FromSeconds(seconds);
}
else
{
throw new XamlX.XamlLoadException($"Unable to parse {text} as a time span", node);
}
}
result = new XamlStaticOrTargetedReturnMethodCallNode(node,
type.FindMethod("FromTicks", type, false, types.Long),
new[] { new XamlConstantNode(node, types.Long, timeSpan.Ticks) });
return(true);
}
if (type.Equals(types.FontFamily))
{
result = new AvaloniaXamlIlFontFamilyAstNode(types, text, node);
return(true);
}
if (type.Equals(types.Thickness))
{
var thickness = Thickness.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Thickness, types.ThicknessFullConstructor,
new[] { thickness.Left, thickness.Top, thickness.Right, thickness.Bottom });
return(true);
}
if (type.Equals(types.Point))
{
var point = Point.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Point, types.PointFullConstructor,
new[] { point.X, point.Y });
return(true);
}
if (type.Equals(types.Vector))
{
var vector = Vector.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Vector, types.VectorFullConstructor,
new[] { vector.X, vector.Y });
return(true);
}
if (type.Equals(types.Size))
{
var size = Size.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Size, types.SizeFullConstructor,
new[] { size.Width, size.Height });
return(true);
}
if (type.Equals(types.Matrix))
{
var matrix = Matrix.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Matrix, types.MatrixFullConstructor,
new[] { matrix.M11, matrix.M12, matrix.M21, matrix.M22, matrix.M31, matrix.M32 });
return(true);
}
if (type.Equals(types.CornerRadius))
{
var cornerRadius = CornerRadius.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.CornerRadius, types.CornerRadiusFullConstructor,
new[] { cornerRadius.TopLeft, cornerRadius.TopRight, cornerRadius.BottomRight, cornerRadius.BottomLeft });
return(true);
}
if (type.FullName == "Avalonia.AvaloniaProperty")
{
var scope = context.ParentNodes().OfType <AvaloniaXamlIlTargetTypeMetadataNode>().FirstOrDefault();
if (scope == null)
{
throw new XamlX.XamlLoadException("Unable to find the parent scope for AvaloniaProperty lookup", node);
}
result = XamlIlAvaloniaPropertyHelper.CreateNode(context, text, scope.TargetType, node);
return(true);
}
result = null;
return(false);
}
private static IXamlIlBindingPathNode TransformBindingPath(AstTransformationContext context, IXamlLineInfo lineInfo, IXamlType startType, IEnumerable <BindingExpressionGrammar.INode> bindingExpression)
{
List <IXamlIlBindingPathElementNode> transformNodes = new List <IXamlIlBindingPathElementNode>();
List <IXamlIlBindingPathElementNode> nodes = new List <IXamlIlBindingPathElementNode>();
foreach (var astNode in bindingExpression)
{
var targetType = nodes.Count == 0 ? startType : nodes[nodes.Count - 1].Type;
switch (astNode)
{
case BindingExpressionGrammar.EmptyExpressionNode _:
break;
case BindingExpressionGrammar.NotNode _:
transformNodes.Add(new XamlIlNotPathElementNode(context.Configuration.WellKnownTypes.Boolean));
break;
case BindingExpressionGrammar.StreamNode _:
IXamlType observableType;
if (targetType.GenericTypeDefinition?.Equals(context.Configuration.TypeSystem.FindType("System.IObservable`1")) == true)
{
observableType = targetType;
}
else
{
observableType = targetType.GetAllInterfaces().FirstOrDefault(i => i.GenericTypeDefinition?.Equals(context.Configuration.TypeSystem.FindType("System.IObservable`1")) ?? false);
}
if (observableType != null)
{
nodes.Add(new XamlIlStreamObservablePathElementNode(observableType.GenericArguments[0]));
break;
}
bool foundTask = false;
for (var currentType = targetType; currentType != null; currentType = currentType.BaseType)
{
if (currentType.GenericTypeDefinition.Equals(context.Configuration.TypeSystem.GetType("System.Threading.Tasks.Task`1")))
{
foundTask = true;
nodes.Add(new XamlIlStreamTaskPathElementNode(currentType.GenericArguments[0]));
break;
}
}
if (foundTask)
{
break;
}
throw new XamlX.XamlParseException($"Compiled bindings do not support stream bindings for objects of type {targetType.FullName}.", lineInfo);
case BindingExpressionGrammar.PropertyNameNode propName:
var avaloniaPropertyFieldNameMaybe = propName.PropertyName + "Property";
var avaloniaPropertyFieldMaybe = targetType.GetAllFields().FirstOrDefault(f =>
f.IsStatic && f.IsPublic && f.Name == avaloniaPropertyFieldNameMaybe);
if (avaloniaPropertyFieldMaybe != null)
{
nodes.Add(new XamlIlAvaloniaPropertyPropertyPathElementNode(avaloniaPropertyFieldMaybe,
XamlIlAvaloniaPropertyHelper.GetAvaloniaPropertyType(avaloniaPropertyFieldMaybe, context.GetAvaloniaTypes(), lineInfo)));
}
else
{
var clrProperty = targetType.GetAllProperties().FirstOrDefault(p => p.Name == propName.PropertyName);
if (clrProperty is null)
{
throw new XamlX.XamlParseException($"Unable to resolve property of name '{propName.PropertyName}' on type '{targetType}'.", lineInfo);
}
nodes.Add(new XamlIlClrPropertyPathElementNode(clrProperty));
}
break;
case BindingExpressionGrammar.IndexerNode indexer:
{
if (targetType.IsArray)
{
nodes.Add(new XamlIlArrayIndexerPathElementNode(targetType, indexer.Arguments, lineInfo));
break;
}
IXamlProperty property = null;
for (var currentType = targetType; currentType != null; currentType = currentType.BaseType)
{
var defaultMemberAttribute = currentType.CustomAttributes.FirstOrDefault(x => x.Type.Namespace == "System.Reflection" && x.Type.Name == "DefaultMemberAttribute");
if (defaultMemberAttribute != null)
{
property = targetType.GetAllProperties().FirstOrDefault(x => x.Name == (string)defaultMemberAttribute.Parameters[0]);
break;
}
}
;
if (property is null)
{
throw new XamlX.XamlParseException($"The type '${targetType}' does not have an indexer.", lineInfo);
}
IEnumerable <IXamlType> parameters = property.IndexerParameters;
List <IXamlAstValueNode> values = new List <IXamlAstValueNode>();
int currentParamIndex = 0;
foreach (var param in parameters)
{
var textNode = new XamlAstTextNode(lineInfo, indexer.Arguments[currentParamIndex], type: context.Configuration.WellKnownTypes.String);
if (!XamlTransformHelpers.TryGetCorrectlyTypedValue(context, textNode,
param, out var converted))
{
throw new XamlX.XamlParseException(
$"Unable to convert indexer parameter value of '{indexer.Arguments[currentParamIndex]}' to {param.GetFqn()}",
textNode);
}
values.Add(converted);
currentParamIndex++;
}
bool isNotifyingCollection = targetType.GetAllInterfaces().Any(i => i.FullName == "System.Collections.Specialized.INotifyCollectionChanged");
nodes.Add(new XamlIlClrIndexerPathElementNode(property, values, string.Join(",", indexer.Arguments), isNotifyingCollection));
break;
}
case BindingExpressionGrammar.AttachedPropertyNameNode attachedProp:
var avaloniaPropertyFieldName = attachedProp.PropertyName + "Property";
var avaloniaPropertyField = GetType(attachedProp.Namespace, attachedProp.TypeName).GetAllFields().FirstOrDefault(f =>
f.IsStatic && f.IsPublic && f.Name == avaloniaPropertyFieldName);
nodes.Add(new XamlIlAvaloniaPropertyPropertyPathElementNode(avaloniaPropertyField,
XamlIlAvaloniaPropertyHelper.GetAvaloniaPropertyType(avaloniaPropertyField, context.GetAvaloniaTypes(), lineInfo)));
break;
case BindingExpressionGrammar.SelfNode _:
nodes.Add(new SelfPathElementNode(targetType));
break;
case VisualAncestorBindingExpressionNode visualAncestor:
nodes.Add(new FindVisualAncestorPathElementNode(visualAncestor.Type, visualAncestor.Level));
break;
case TemplatedParentBindingExpressionNode templatedParent:
var templatedParentField = context.GetAvaloniaTypes().StyledElement.GetAllFields()
.FirstOrDefault(f => f.IsStatic && f.IsPublic && f.Name == "TemplatedParentProperty");
nodes.Add(new XamlIlAvaloniaPropertyPropertyPathElementNode(
templatedParentField,
templatedParent.Type));
break;
case BindingExpressionGrammar.AncestorNode ancestor:
if (ancestor.Namespace is null && ancestor.TypeName is null)
{
var styledElementType = context.GetAvaloniaTypes().StyledElement;
var ancestorType = context
.ParentNodes()
.OfType <XamlAstConstructableObjectNode>()
.Where(x => styledElementType.IsAssignableFrom(x.Type.GetClrType()))
.ElementAtOrDefault(ancestor.Level)
?.Type.GetClrType();
if (ancestorType is null)
{
throw new XamlX.XamlParseException("Unable to resolve implicit ancestor type based on XAML tree.", lineInfo);
}
nodes.Add(new FindAncestorPathElementNode(ancestorType, ancestor.Level));
}
else
{
nodes.Add(new FindAncestorPathElementNode(GetType(ancestor.Namespace, ancestor.TypeName), ancestor.Level));
}
break;
