private 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.GetRobustTypes();
if (type.Equals(types.Vector2))
{
var foo = MathParsing.Single2.Parse(text);
if (!foo.Success)
{
throw new XamlLoadException($"Unable to parse \"{text}\" as a Vector2", node);
}
var(x, y) = foo.Value;
result = new RXamlSingleVecLikeConstAstNode(
node,
types.Vector2, types.Vector2ConstructorFull,
types.Single, new[] { x, y });
return(true);
}
result = null;
return(false);
}
private static bool CustomValueConverter(
AstTransformationContext context,
IXamlAstValueNode node,
IXamlType type,
out IXamlAstValueNode result)
{
if (!(node is XamlAstTextNode textNode))
{
result = null;
return(false);
}
var text = textNode.Text;
var types = context.GetRobustTypes();
if (type.Equals(types.Vector2))
{
var foo = MathParsing.Single2.Parse(text);
if (!foo.Success)
{
throw new XamlLoadException($"Unable to parse \"{text}\" as a Vector2", node);
}
var(x, y) = foo.Value;
result = new RXamlSingleVecLikeConstAstNode(
node,
types.Vector2, types.Vector2ConstructorFull,
types.Single, new[] { x, y });
return(true);
}
if (type.Equals(types.Thickness))
{
var foo = MathParsing.Thickness.Parse(text);
if (!foo.Success)
{
throw new XamlLoadException($"Unable to parse \"{text}\" as a Thickness", node);
}
var val = foo.Value;
float[] full;
if (val.Length == 1)
{
var u = val[0];
full = new[] { u, u, u, u };
}
else if (val.Length == 2)
{
var h = val[0];
var v = val[1];
full = new[] { h, v, h, v };
}
else // 4
{
full = val;
}
result = new RXamlSingleVecLikeConstAstNode(
node,
types.Thickness, types.ThicknessConstructorFull,
types.Single, full);
return(true);
}
if (type.Equals(types.Thickness))
{
var foo = MathParsing.Thickness.Parse(text);
if (!foo.Success)
{
throw new XamlLoadException($"Unable to parse \"{text}\" as a Thickness", node);
}
var val = foo.Value;
float[] full;
if (val.Length == 1)
{
var u = val[0];
full = new[] { u, u, u, u };
}
else if (val.Length == 2)
{
var h = val[0];
var v = val[1];
full = new[] { h, v, h, v };
}
else // 4
{
full = val;
}
result = new RXamlSingleVecLikeConstAstNode(
node,
types.Thickness, types.ThicknessConstructorFull,
types.Single, full);
return(true);
}
if (type.Equals(types.Color))
{
// TODO: Interpret these colors at XAML compile time instead of at runtime.
result = new RXamlColorAstNode(node, types, text);
return(true);
}
result = null;
return(false);
}
