public IEnumerable <Instruction> ProvideValue(IElementNode node, ModuleDefinition module, ILContext context, out TypeReference typeRef)
{
typeRef = module.ImportReference(("Microsoft.Maui.Controls", "Microsoft.Maui.Controls", "DataTemplate"));
var name = new XmlName("", "TypeName");
if (!node.Properties.TryGetValue(name, out INode typeNameNode) && node.CollectionItems.Any())
{
typeNameNode = node.CollectionItems[0];
}
if (!(typeNameNode is ValueNode valueNode))
{
throw new BuildException(BuildExceptionCode.PropertyMissing, node as IXmlLineInfo, null, "TypeName", typeof(Microsoft.Maui.Controls.Xaml.DataTemplateExtension));
}
var contentTypeRef = module.ImportReference(XmlTypeExtensions.GetTypeReference(valueNode.Value as string, module, node as BaseNode))
?? throw new BuildException(BuildExceptionCode.TypeResolution, node as IXmlLineInfo, null, valueNode.Value);
var dataTemplateCtor = module.ImportCtorReference(typeRef, new[] { module.ImportReference(("mscorlib", "System", "Type")) });
public static IEnumerable <Instruction> PushConvertedValue(this ValueNode node, ILContext context,
TypeReference targetTypeRef, TypeReference typeConverter, IEnumerable <Instruction> pushServiceProvider,
bool boxValueTypes, bool unboxValueTypes)
{
var module = context.Body.Method.Module;
if (KnownCompiledTypeConverters == null)
{
KnownCompiledTypeConverters = new Dictionary <TypeReference, Type>(TypeRefComparer.Default)
{
{ module.ImportReference(("Microsoft.Maui", "Microsoft.Maui.Converters", "ThicknessTypeConverter")), typeof(ThicknessTypeConverter) },
public static bool CanConvertValue(this ValueNode node, ILContext context, TypeReference targetTypeRef, TypeReference typeConverter)
{
var str = (string)node.Value;
var module = context.Body.Method.Module;
//If there's a [TypeConverter], assume we can convert
if (typeConverter != null && str != null)
{
return(true);
}
//check if it's assignable from a string
if (targetTypeRef.ResolveCached().FullName == "System.Nullable`1")
{
targetTypeRef = ((GenericInstanceType)targetTypeRef).GenericArguments[0];
}
if (targetTypeRef.ResolveCached().BaseType != null && targetTypeRef.ResolveCached().BaseType.FullName == "System.Enum")
{
return(true);
}
if (targetTypeRef.FullName == "System.Char")
{
return(true);
}
if (targetTypeRef.FullName == "System.SByte")
{
return(true);
}
if (targetTypeRef.FullName == "System.Int16")
{
return(true);
}
if (targetTypeRef.FullName == "System.Int32")
{
return(true);
}
if (targetTypeRef.FullName == "System.Int64")
{
return(true);
}
if (targetTypeRef.FullName == "System.Byte")
{
return(true);
}
if (targetTypeRef.FullName == "System.UInt16")
{
return(true);
}
if (targetTypeRef.FullName == "System.UInt32")
{
return(true);
}
if (targetTypeRef.FullName == "System.UInt64")
{
return(true);
}
if (targetTypeRef.FullName == "System.Single")
{
return(true);
}
if (targetTypeRef.FullName == "System.Double")
{
return(true);
}
if (targetTypeRef.FullName == "System.Boolean")
{
return(true);
}
if (targetTypeRef.FullName == "System.TimeSpan")
{
return(true);
}
if (targetTypeRef.FullName == "System.DateTime")
{
return(true);
}
if (targetTypeRef.FullName == "System.String")
{
return(true);
}
if (targetTypeRef.FullName == "System.Object")
{
return(true);
}
if (targetTypeRef.FullName == "System.Decimal")
{
return(true);
}
var implicitOperator = module.TypeSystem.String.GetImplicitOperatorTo(targetTypeRef, module);
if (implicitOperator != null)
{
return(true);
}
return(false);
}
public static IEnumerable <Instruction> PushConvertedValue(this ValueNode node, ILContext context,
TypeReference targetTypeRef, IEnumerable <ICustomAttributeProvider> attributeProviders,
IEnumerable <Instruction> pushServiceProvider, bool boxValueTypes, bool unboxValueTypes)
{
TypeReference typeConverter = null;
foreach (var attributeProvider in attributeProviders)
{
CustomAttribute typeConverterAttribute;
if (
(typeConverterAttribute =
attributeProvider.CustomAttributes.FirstOrDefault(
cad => cad.AttributeType.FullName == "System.ComponentModel.TypeConverterAttribute")) != null)
{
typeConverter = typeConverterAttribute.ConstructorArguments[0].Value as TypeReference;
break;
}
}
if (typeConverter == null)
{
foreach (var(t, tc) in TypeConversionExtensions.KnownConverters)
{
if (TypeRefComparer.Default.Equals(context.Module.ImportReference(t), targetTypeRef))
{
typeConverter = context.Module.ImportReference(tc);
break;
}
}
}
return(node.PushConvertedValue(context, targetTypeRef, typeConverter, pushServiceProvider, boxValueTypes,
unboxValueTypes));
}
public static IEnumerable <Instruction> PushConvertedValue(this ValueNode node, ILContext context, FieldReference bpRef,
IEnumerable <Instruction> pushServiceProvider, bool boxValueTypes, bool unboxValueTypes)
{
var module = context.Body.Method.Module;
var targetTypeRef = bpRef.GetBindablePropertyType(node, module);
var typeConverter = bpRef.GetBindablePropertyTypeConverter(module);
return(node.PushConvertedValue(context, targetTypeRef, typeConverter, pushServiceProvider, boxValueTypes,
unboxValueTypes));
}
public SetFieldVisitor(ILContext context)
{
Context = context;
}
public IEnumerable <Instruction> ProvideValue(IElementNode node, ModuleDefinition module, ILContext context, out TypeReference typeRef)
{
typeRef = module.TypeSystem.Object;
return(new[] { Instruction.Create(OpCodes.Ldnull) });
}
public IEnumerable <Instruction> ProvideValue(IElementNode node, ModuleDefinition module, ILContext context, out TypeReference memberRef)
{
INode ntype;
if (!node.Properties.TryGetValue(new XmlName("", "Member"), out ntype))
{
ntype = node.CollectionItems[0];
}
var member = ((ValueNode)ntype).Value as string;
if (IsNullOrEmpty(member) || !member.Contains("."))
{
throw new BuildException(BuildExceptionCode.XStaticSyntax, node as IXmlLineInfo, null);
}
var dotIdx = member.LastIndexOf('.');
var typename = member.Substring(0, dotIdx);
var membername = member.Substring(dotIdx + 1);
var typeRef = module.ImportReference(XmlTypeExtensions.GetTypeReference(typename, module, node as BaseNode));
var fieldRef = GetFieldReference(typeRef, membername, module);
var propertyDef = GetPropertyDefinition(typeRef, membername, module);
if (fieldRef == null && propertyDef == null)
{
throw new BuildException(BuildExceptionCode.XStaticResolution, node as IXmlLineInfo, null, membername, typename);
}
var fieldDef = fieldRef?.Resolve();
if (fieldRef != null)
{
memberRef = fieldRef.FieldType;
if (!fieldDef.HasConstant)
{
return new[] { Instruction.Create(OpCodes.Ldsfld, fieldRef) }
}
;
//Constants can be numbers, Boolean values, strings, or a null reference. (https://msdn.microsoft.com/en-us/library/e6w8fe1b.aspx)
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Boolean))
{
return new[] { Instruction.Create(((bool)fieldDef.Constant) ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.String))
{
return new[] { Instruction.Create(OpCodes.Ldstr, (string)fieldDef.Constant) }
}
;
if (fieldDef.Constant == null)
{
return new[] { Instruction.Create(OpCodes.Ldnull) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Char))
{
return new[] { Instruction.Create(OpCodes.Ldc_I4, (char)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Single))
{
return new[] { Instruction.Create(OpCodes.Ldc_R4, (float)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Double))
{
return new[] { Instruction.Create(OpCodes.Ldc_R8, (double)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Byte) || TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Int16) || TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Int32))
{
return new[] { Instruction.Create(OpCodes.Ldc_I4, (int)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.SByte) || TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.UInt16) || TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.UInt32))
{
return new[] { Instruction.Create(OpCodes.Ldc_I4, (uint)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.Int64))
{
return new[] { Instruction.Create(OpCodes.Ldc_I8, (long)fieldDef.Constant) }
}
;
if (TypeRefComparer.Default.Equals(memberRef, module.TypeSystem.UInt64))
{
return new[] { Instruction.Create(OpCodes.Ldc_I8, (ulong)fieldDef.Constant) }
}
;
//enum values
if (memberRef.ResolveCached().IsEnum)
{
if (fieldDef.Constant is long)
{
return new[] { Instruction.Create(OpCodes.Ldc_I8, (long)fieldDef.Constant) }
}
;
if (fieldDef.Constant is ulong)
{
return new[] { Instruction.Create(OpCodes.Ldc_I8, (ulong)fieldDef.Constant) }
}
;
if (fieldDef.Constant is uint)
{
return new[] { Instruction.Create(OpCodes.Ldc_I4, (uint)fieldDef.Constant) }
}
;
//everything else will cast just fine to an int
return(new[] { Instruction.Create(OpCodes.Ldc_I4, (int)fieldDef.Constant) });
}
}
memberRef = propertyDef.PropertyType;
var getterDef = module.ImportReference(propertyDef.GetMethod);
return(new[] { Instruction.Create(OpCodes.Call, getterDef) });
}
IEnumerable <Instruction> ProvideValue(TypeReference typeTypeRef, IReadOnlyList <INode> items, ModuleDefinition module, ILContext context)
{
var n = items.Count;
yield return(Instruction.Create(OpCodes.Ldc_I4, n));
yield return(Instruction.Create(OpCodes.Newarr, typeTypeRef));
for (var i = 0; i < n; i++)
{
var vardef = context.Variables[items[i] as IElementNode];
if (typeTypeRef.IsValueType)
{
yield return(Instruction.Create(OpCodes.Dup));
yield return(Instruction.Create(OpCodes.Ldc_I4, i));
yield return(Instruction.Create(OpCodes.Ldelema, typeTypeRef));
foreach (var instruction in vardef.LoadAs(typeTypeRef, module))
{
yield return(instruction);
}
yield return(Instruction.Create(OpCodes.Stobj, typeTypeRef));
}
else
{
yield return(Instruction.Create(OpCodes.Dup));
yield return(Instruction.Create(OpCodes.Ldc_I4, i));
foreach (var instruction in vardef.LoadAs(typeTypeRef, module))
{
yield return(instruction);
}
yield return(Instruction.Create(OpCodes.Stelem_Ref));
}
}
}
public IEnumerable <Instruction> ProvideValue(IElementNode node, ModuleDefinition module, ILContext context, out TypeReference memberRef)
{
var typeNode = node.Properties[new XmlName("", "Type")] as IElementNode;
var typeTypeRef = context.TypeExtensions[typeNode];
memberRef = typeTypeRef.MakeArrayType();
return(ProvideValue(typeTypeRef, node.CollectionItems, module, context));
}