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($"Unable to parse {text} as a time span", node);
}
}
result = new XamlStaticOrTargetedReturnMethodCallNode(node,
type.FindMethod("FromTicks", type, false, types.Long),
new[] { new XamlConstantNode(node, types.Long, timeSpan.Ticks) });
return(true);
}
if (type.Equals(types.FontFamily))
{
result = new AvaloniaXamlIlFontFamilyAstNode(types, text, node);
return(true);
}
if (type.FullName == "Avalonia.AvaloniaProperty")
{
var scope = context.ParentNodes().OfType <AvaloniaXamlIlTargetTypeMetadataNode>().FirstOrDefault();
if (scope == null)
{
throw new XamlX.XamlLoadException("Unable to find the parent scope for AvaloniaProperty lookup", node);
}
result = XamlIlAvaloniaPropertyHelper.CreateNode(context, text, scope.TargetType, node);
return(true);
}
result = null;
return(false);
}
public static bool TryConvert(AstTransformationContext context, IXamlAstValueNode node, string text, IXamlType type, AvaloniaXamlIlWellKnownTypes types, out IXamlAstValueNode result)
{
if (type.FullName == "System.TimeSpan")
{
var tsText = text.Trim();
if (!TimeSpan.TryParse(tsText, CultureInfo.InvariantCulture, out var timeSpan))
{
// // shorthand seconds format (ie. "0.25")
if (!tsText.Contains(":") && double.TryParse(tsText,
NumberStyles.Float | NumberStyles.AllowThousands,
CultureInfo.InvariantCulture, out var seconds))
{
timeSpan = TimeSpan.FromSeconds(seconds);
}
else
{
throw new XamlX.XamlLoadException($"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))
{
try
{
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);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a thickness", node);
}
}
if (type.Equals(types.Point))
{
try
{
var point = Point.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Point, types.PointFullConstructor,
new[] { point.X, point.Y });
return(true);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a point", node);
}
}
if (type.Equals(types.Vector))
{
try
{
var vector = Vector.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Vector, types.VectorFullConstructor,
new[] { vector.X, vector.Y });
return(true);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a vector", node);
}
}
if (type.Equals(types.Size))
{
try
{
var size = Size.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.Size, types.SizeFullConstructor,
new[] { size.Width, size.Height });
return(true);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a size", node);
}
}
if (type.Equals(types.Matrix))
{
try
{
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);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a matrix", node);
}
}
if (type.Equals(types.CornerRadius))
{
try
{
var cornerRadius = CornerRadius.Parse(text);
result = new AvaloniaXamlIlVectorLikeConstantAstNode(node, types, types.CornerRadius, types.CornerRadiusFullConstructor,
new[] { cornerRadius.TopLeft, cornerRadius.TopRight, cornerRadius.BottomRight, cornerRadius.BottomLeft });
return(true);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a corner radius", node);
}
}
if (type.Equals(types.Color))
{
if (!Color.TryParse(text, out Color color))
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a color", node);
}
result = new XamlStaticOrTargetedReturnMethodCallNode(node,
type.GetMethod(
new FindMethodMethodSignature("FromUInt32", type, types.UInt)
{
IsStatic = true
}),
new[] { new XamlConstantNode(node, types.UInt, color.ToUint32()) });
return(true);
}
if (type.Equals(types.GridLength))
{
try
{
var gridLength = GridLength.Parse(text);
result = new AvaloniaXamlIlGridLengthAstNode(node, types, gridLength);
return(true);
}
catch
{
throw new XamlX.XamlLoadException($"Unable to parse \"{text}\" as a grid length", node);
}
}
if (type.Equals(types.Cursor))
{
if (TypeSystemHelpers.TryGetEnumValueNode(types.StandardCursorType, text, node, out var enumConstantNode))
{
var cursorTypeRef = new XamlAstClrTypeReference(node, types.Cursor, false);
result = new XamlAstNewClrObjectNode(node, cursorTypeRef, types.CursorTypeConstructor, new List <IXamlAstValueNode> {
enumConstantNode
});
return(true);
}
}
if (type.Equals(types.ColumnDefinitions))
{
return(ConvertDefinitionList(node, text, types, types.ColumnDefinitions, types.ColumnDefinition, "column definitions", out result));
}
if (type.Equals(types.RowDefinitions))
{
return(ConvertDefinitionList(node, text, types, types.RowDefinitions, types.RowDefinition, "row definitions", out result));
}
if (type.Equals(types.Classes))
{
var classes = text.Split(' ');
var classNodes = classes.Select(c => new XamlAstTextNode(node, c, types.XamlIlTypes.String)).ToArray();
result = new AvaloniaXamlIlAvaloniaListConstantAstNode(node, types, types.Classes, types.XamlIlTypes.String, classNodes);
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 (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);
}