private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
var fieldName = fieldSymbol.Name;
var fieldType = fieldSymbol.Type;
var attributeData = fieldSymbol.GetAttributes().Single(ad => ad?.AttributeClass?.Equals(attributeSymbol, SymbolEqualityComparer.Default) ?? false);
var overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
var propertyName = ChooseName(fieldName, overridenNameOpt);
if (propertyName is null || propertyName.Length == 0 || propertyName == fieldName)
{
// Issue a diagnostic that we can't process this field.
return;
}
var overridenSetterModifierOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "SetterModifier").Value;
var setterModifier = ChooseSetterModifier(overridenSetterModifierOpt);
if (setterModifier is null)
{
source.Append($@"
public {fieldType} {propertyName}
{{
get => {fieldName};
}}");
}
else
{
source.Append($@"
public {fieldType} {propertyName}
{{
get => {fieldName};
{setterModifier}set => this.RaiseAndSetIfChanged(ref {fieldName}, value);
}}");
}
public static FieldDeclarationSyntax GenerateFieldDeclaration(
IFieldSymbol field, CSharpCodeGenerationContextInfo info, CancellationToken cancellationToken)
{
var reusableSyntax = GetReuseableSyntaxNodeForSymbol <FieldDeclarationSyntax>(field, info);
if (reusableSyntax != null)
{
return(reusableSyntax);
}
var initializer = CodeGenerationFieldInfo.GetInitializer(field) is ExpressionSyntax initializerNode
? SyntaxFactory.EqualsValueClause(initializerNode)
: GenerateEqualsValue(field);
var fieldDeclaration = SyntaxFactory.FieldDeclaration(
AttributeGenerator.GenerateAttributeLists(field.GetAttributes(), info),
GenerateModifiers(field, info),
SyntaxFactory.VariableDeclaration(
field.Type.GenerateTypeSyntax(),
SyntaxFactory.SingletonSeparatedList(
AddAnnotationsTo(field, SyntaxFactory.VariableDeclarator(field.Name.ToIdentifierToken(), null, initializer)))));
return(AddFormatterAndCodeGeneratorAnnotationsTo(
ConditionallyAddDocumentationCommentTo(fieldDeclaration, field, info, cancellationToken)));
}
public override MetadataItem VisitField(IFieldSymbol symbol)
{
MetadataItem result = GetYamlItem(symbol);
if (result == null)
{
return(null);
}
if (result.Syntax == null)
{
result.Syntax = new SyntaxDetail {
Content = new SortedList <SyntaxLanguage, string>()
};
}
if (result.Syntax.Content == null)
{
result.Syntax.Content = new SortedList <SyntaxLanguage, string>();
}
_generator.GenerateSyntax(result.Type, symbol, result.Syntax, this);
_generator.GenerateField(symbol, result, this);
var typeGenericParameters = symbol.ContainingType.IsGenericType ? symbol.ContainingType.Accept(TypeGenericParameterNameVisitor.Instance) : EmptyListOfString;
var id = AddSpecReference(symbol.Type, typeGenericParameters);
result.Syntax.Return = VisitorHelper.GetParameterDescription(symbol, result, id, true, GetTripleSlashCommentParserContext(result, _preserveRawInlineComments));
Debug.Assert(result.Syntax.Return.Type != null);
result.Attributes = GetAttributeInfo(symbol.GetAttributes());
return(result);
}
private void ProcessPrintableAttributedFields(GeneratorExecutionContext context, MySyntaxReceiver syntaxReceiver, Compilation compilation, INamedTypeSymbol attributeSymbol)
{
List <IFieldSymbol> fieldSymbols = new List <IFieldSymbol>();
foreach (FieldDeclarationSyntax field in syntaxReceiver.CandidateFields)
{
SemanticModel model = compilation.GetSemanticModel(field.SyntaxTree);
foreach (VariableDeclaratorSyntax variable in field.Declaration.Variables)
{
IFieldSymbol fieldSymbol = model.GetDeclaredSymbol(variable) as IFieldSymbol;
if (fieldSymbol.GetAttributes()
.Any(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default)))
{
fieldSymbols.Add(fieldSymbol);
}
}
}
foreach (IGrouping <INamedTypeSymbol, IFieldSymbol> group in fieldSymbols.GroupBy(f => f.ContainingType))
{
string classSource = ProcessClassPrintableAttribute(group.Key, group.ToList(), attributeSymbol, context);
context.AddSource($"{group.Key.Name}.Printables.cs", SourceText.From(classSource, Encoding.UTF8));
}
context.AddSource("PrintableFields.PrintableAttribute", SourceText.From(attributeText, Encoding.UTF8));
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
// 獲取欄位名稱
string fieldName = fieldSymbol.Name;
ITypeSymbol fieldType = fieldSymbol.Type;
// 獲取 AutoNotify Attribute 和相關的資料
AttributeData attributeData = fieldSymbol.GetAttributes().Single(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default));
TypedConstant overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
string propertyName = chooseName(fieldName, overridenNameOpt);
if (propertyName.Length == 0 || propertyName == fieldName)
{
//TODO: 無法處理，產生診斷資訊
return;
}
source.Append($@"
public {fieldType} {propertyName}
{{
get
{{
return this.{fieldName};
}}
set
{{
this.{fieldName} = value;
this.PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(nameof({propertyName})));
}}
}}
");
}
public static FieldDeclarationSyntax GenerateFieldDeclaration(
IFieldSymbol field, CodeGenerationOptions options)
{
var reusableSyntax = GetReuseableSyntaxNodeForSymbol <VariableDeclaratorSyntax>(field, options);
if (reusableSyntax != null)
{
if (reusableSyntax.Parent is VariableDeclarationSyntax variableDeclaration)
{
var newVariableDeclaratorsList = new SeparatedSyntaxList <VariableDeclaratorSyntax>().Add(reusableSyntax);
var newVariableDeclaration = variableDeclaration.WithVariables(newVariableDeclaratorsList);
if (variableDeclaration.Parent is FieldDeclarationSyntax fieldDecl)
{
return(fieldDecl.WithDeclaration(newVariableDeclaration));
}
}
}
var initializer = CodeGenerationFieldInfo.GetInitializer(field) is ExpressionSyntax initializerNode
? SyntaxFactory.EqualsValueClause(initializerNode)
: GenerateEqualsValue(field);
var fieldDeclaration = SyntaxFactory.FieldDeclaration(
AttributeGenerator.GenerateAttributeLists(field.GetAttributes(), options),
GenerateModifiers(field, options),
SyntaxFactory.VariableDeclaration(
field.Type.GenerateTypeSyntax(),
SyntaxFactory.SingletonSeparatedList(
AddAnnotationsTo(field, SyntaxFactory.VariableDeclarator(field.Name.ToIdentifierToken(), null, initializer)))));
return(AddFormatterAndCodeGeneratorAnnotationsTo(
ConditionallyAddDocumentationCommentTo(fieldDeclaration, field, options)));
}
public override void VisitField(IFieldSymbol symbol)
{
foreach (var attr in symbol.GetAttributes())
{
if (attr.AttributeClass == mChecker.mLuaCallCSharpSymbol)
{
VariableDeclaratorSyntax node = symbol.DeclaringSyntaxReferences.Single().GetSyntax() as VariableDeclaratorSyntax;
if (node != null)
{
var allTypes = node.DescendantNodes().OfType <TypeOfExpressionSyntax>().Select((a) => a.Type);
var semanticMode = mChecker.mCompilation.GetSemanticModel(node.SyntaxTree);
foreach (var t in allTypes)
{
var symbolInfo = semanticMode.GetSymbolInfo(t);
if (symbolInfo.Symbol != null)
{
LuaCallCSharpSymbols.Add(symbolInfo.Symbol);
}
else
{
Console.WriteLine("failed to get GetSymbolInfo from " + t.ToString());
}
}
}
}
}
}
private static string GetNewFieldName(IFieldSymbol fieldSymbol)
{
var name = fieldSymbol.Name.Trim('_');
if (name.Length > 2 && char.IsLetter(name[0]) && name[1] == '_')
{
name = name.Substring(2);
}
if (name.Length == 0)
{
return(fieldSymbol.Name);
}
if (name.Length > 2 && char.IsUpper(name[0]) && char.IsLower(name[1]))
{
name = char.ToLower(name[0]) + name.Substring(1);
}
if (fieldSymbol.IsStatic)
{
// Check for ThreadStatic private fields.
if (fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Name.Equals("ThreadStaticAttribute", StringComparison.Ordinal)))
{
return("t_" + name);
}
else
{
return("s_" + name);
}
}
return("_" + name);
}
static bool IsDataContractSerializable(IFieldSymbol symbol, INamedTypeSymbol dataContractAttribute, INamedTypeSymbol dataMemberAttribute)
{
if (dataContractAttribute is null || dataMemberAttribute is null)
{
return(false);
}
return(symbol.GetAttributes().Any(static (x, dataMemberAttribute) => SymbolEqualityComparer.Default.Equals(x.AttributeClass, dataMemberAttribute), dataMemberAttribute) &&
static void VerifyField(DiagnosticsReportContext context, IFieldSymbol field, HashSet <ITypeSymbol> alreadyAnalyzed, HashSet <int> definedIndexes)
{
if (field.IsStatic)
{
return;
}
if (field.DeclaredAccessibility != Accessibility.Public)
{
return;
}
var attributes = field.GetAttributes();
if (attributes.FindAttributeShortName(IgnoreShortName) != null)
{
return;
}
if (!field.ContainingType.IsValueType)
{
context.Add(Diagnostic.Create(ClassNotSupportPublicField, field.Locations[0], field.ContainingType?.Name, field.Name));
return;
}
var indexAttr = attributes.FindAttributeShortName(IndexAttributeShortName);
if (indexAttr == null || indexAttr.ConstructorArguments.Length == 0)
{
context.Add(Diagnostic.Create(PublicPropertyNeedsIndex, field.Locations[0], field.ContainingType?.Name, field.Name));
return;
}
var index = indexAttr.ConstructorArguments[0];
if (index.IsNull)
{
return; // null is normal compiler error.
}
if (!definedIndexes.Add((int)index.Value))
{
context.Add(Diagnostic.Create(IndexAttributeDuplicate, field.Locations[0], field.ContainingType?.Name, field.Name, index.Value));
return;
}
if ((int)index.Value >= 100)
{
context.Add(Diagnostic.Create(IndexIsTooLarge, field.Locations[0], index.Value, field.Name));
}
var namedType = field.Type as INamedTypeSymbol;
if (namedType != null) // if <T> is unnamed type, it can't analyze.
{
VerifyType(context, field.Locations[0], field.Type, alreadyAnalyzed, field);
}
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
// get the name and type of the field
string fieldName = fieldSymbol.Name;
ITypeSymbol fieldType = fieldSymbol.Type;
// get the AutoNotify attribute from the field, and any associated data
AttributeData attributeData = fieldSymbol.GetAttributes().Single(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default));
TypedConstant overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
string propertyName = chooseName(fieldName, overridenNameOpt);
if (propertyName.Length == 0 || propertyName == fieldName)
{
//TODO: issue a diagnostic that we can't process this field
return;
}
source.Append($@"
public {fieldType} {propertyName}
{{
get
{{
StateManager.OnPropertyRead(this, nameof({propertyName}));
this.PropertyRead?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(nameof({propertyName})));
return this.{fieldName};
}}
set
{{
this.{fieldName} = value;
StateManager.OnPropertyChanged(this, nameof({propertyName}), value);
this.PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(nameof({propertyName})));
}}
}}
");
string chooseName(string fieldName, TypedConstant overridenNameOpt)
{
if (!overridenNameOpt.IsNull)
{
return(overridenNameOpt.Value.ToString());
}
fieldName = fieldName.TrimStart('_');
if (fieldName.Length == 0)
{
return(string.Empty);
}
if (fieldName.Length == 1)
{
return(fieldName.ToUpper());
}
return(fieldName.Substring(0, 1).ToUpper() + fieldName.Substring(1));
}
}
public static void GenerateSerializableProperty(
this StringBuilder source,
Compilation compilation,
string indent,
IFieldSymbol fieldSymbol,
Accessibility getter,
Accessibility?setter,
bool isVirtual,
ISymbol?parentFieldOrProperty
)
{
var fieldName = fieldSymbol.Name;
var invalidatePropertiesAttribute = fieldSymbol
.GetAttributes()
.OfType <AttributeData>()
.FirstOrDefault(
attr => attr.AttributeClass?.Equals(
compilation.GetTypeByMetadataName(SymbolMetadata.INVALIDATEPROPERTIES_ATTRIBUTE),
SymbolEqualityComparer.Default
) ?? false
);
var propertyIndent = $"{indent} ";
var innerIndent = $"{propertyIndent} ";
var propertyAccessor = setter > getter ? setter : getter;
var getterAccessor = getter == propertyAccessor ? Accessibility.NotApplicable : getter;
source.GeneratePropertyStart(indent, propertyAccessor.Value, isVirtual, fieldSymbol);
// Getter
source.GeneratePropertyGetterReturnsField(propertyIndent, fieldSymbol, getterAccessor);
if (setter != null && setter != Accessibility.NotApplicable)
{
var setterAccessor = setter == propertyAccessor ? Accessibility.NotApplicable : setter;
var parentSymbol = parentFieldOrProperty?.Name ?? "this";
// Setter
source.GeneratePropertySetterStart(propertyIndent, false, setterAccessor.Value);
source.AppendLine($"{innerIndent}if (value != {fieldName})");
source.AppendLine($"{innerIndent}{{");
source.AppendLine($"{innerIndent} {fieldName} = value;");
source.AppendLine($"{innerIndent} {parentSymbol}.MarkDirty();");
if (invalidatePropertiesAttribute != null)
{
source.AppendLine($"{innerIndent} InvalidateProperties();");
}
source.AppendLine($"{innerIndent}}}");
source.GeneratePropertyGetSetEnd(propertyIndent, false);
}
source.GeneratePropertyEnd(indent);
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
var fieldName = fieldSymbol.Name;
var fieldType = fieldSymbol.Type;
var attributeData = fieldSymbol.GetAttributes().Single(ad => ad?.AttributeClass?.Equals(attributeSymbol, SymbolEqualityComparer.Default) ?? false);
var overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
var propertyName = ChooseName(fieldName, overridenNameOpt);
if (propertyName is null || propertyName.Length == 0 || propertyName == fieldName)
{
// Issue a diagnostic that we can't process this field.
return;
}
source.Append($@"
protected static readonly PropertyChangedEventArgs {fieldName}PropertyChangedEventArgs = new PropertyChangedEventArgs(nameof({propertyName}));");
var overridenIgnoreDataMemberOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "IgnoreDataMember").Value;
var ignoreDataMember = false;
if (!overridenIgnoreDataMemberOpt.IsNull && overridenIgnoreDataMemberOpt.Value is not null)
{
ignoreDataMember = (bool)overridenIgnoreDataMemberOpt.Value;
}
if (ignoreDataMember)
{
source.Append($@"
[IgnoreDataMember]" );
}
else
{
source.Append($@"
[DataMember(IsRequired = false, EmitDefaultValue = true)]" );
}
var overridenSetterModifierOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "SetterModifier").Value;
var setterModifier = ChooseSetterModifier(overridenSetterModifierOpt);
if (setterModifier is null)
{
source.Append($@"
public {fieldType} {propertyName}
{{
get => {fieldName};
}}");
}
else
{
source.Append($@"
public {fieldType} {propertyName}
{{
get => {fieldName};
{setterModifier}set => RaiseAndSetIfChanged(ref {fieldName}, value, {fieldName}PropertyChangedEventArgs);
}}");
}
private bool IsFieldSerializableByAttributes(IFieldSymbol field)
{
if (field.GetAttributes()
.Any(attr => s_serializingFieldAttributes.Contains(NameHelper.GetFullName(attr.AttributeClass))))
{
return(true);
}
return(false);
}
public FieldSymbolInfo(IFieldSymbol f)
{
ContainingType = new TypeSymbolInfo(f.ContainingType);
RealField = f;
FieldType = new TypeSymbolInfo(f.Type);
Accessibility = f.DeclaredAccessibility.ConvertToStructure();
Attributes = EnumerableExtensions.CreateLazyImmutableArray(() => RealField.GetAttributes()
.Select(AotSymbolExtensions.ConvertToStructure)
.Where(i => i != null));
}
public override IList <CustomAttributeData> GetCustomAttributesData()
{
var attributes = new List <CustomAttributeData>();
foreach (AttributeData a in _field.GetAttributes())
{
attributes.Add(new CustomAttributeDataWrapper(a, _metadataLoadContext));
}
return(attributes);
}
private BuilderFieldInfo?TryGetAttributedField(IFieldSymbol fieldSymbol)
{
var builderFieldAttribute = fieldSymbol.GetAttributes()
.FirstOrDefault(x => x.AttributeClass?.Name == AttributeName <BuilderFieldAttribute> .GetName() ||
x.AttributeClass?.Name == AttributeName <BuilderFieldAttribute> .GetPlainName());
if (builderFieldAttribute is null)
{
return(null);
}
return(new BuilderFieldInfo(fieldSymbol.Name, fieldSymbol.Type.Name));
}
public void Execute(GeneratorExecutionContext context)
{
// Добавить текст атрибута и вспомогательный класс
context.AddSource("AutoNotifyAttribute", SourceText.From(attributeAndHelperText, Encoding.UTF8));
// получаем наш заполненный SyntaxReceiver
if (!(context.SyntaxReceiver is SyntaxReceiver receiver))
{
return;
}
// мы создадим новую Compilation с атрибутом
// TODO: в будущем будет разрешено добавлять исходники во время инициализации, так что этот шаг не будет нужен
CSharpParseOptions options = (context.Compilation as CSharpCompilation).SyntaxTrees[0].Options as CSharpParseOptions;
Compilation compilation = context.Compilation.AddSyntaxTrees(
CSharpSyntaxTree.ParseText(SourceText.From(attributeAndHelperText, Encoding.UTF8), options));
// получаем добавленный атрибут and INotifyPropertyChanged
INamedTypeSymbol attributeSymbol = compilation.GetTypeByMetadataName("AutoNotify.AutoNotifyAttribute");
INamedTypeSymbol notifySymbol = compilation.GetTypeByMetadataName("System.ComponentModel.INotifyPropertyChanged");
// обходим поля-кандидаты, выбираем только те, у которых действительно есть нужный атрибут
List <IFieldSymbol> fieldSymbols = new List <IFieldSymbol>();
foreach (FieldDeclarationSyntax field in receiver.CandidateFields)
{
SemanticModel model = compilation.GetSemanticModel(field.SyntaxTree);
foreach (VariableDeclaratorSyntax variable in field.Declaration.Variables)
{
// получаем символ, декларируемый этим полем, и запоминаем его, если он и правда имеет атрибут
IFieldSymbol fieldSymbol = model.GetDeclaredSymbol(variable) as IFieldSymbol;
if (fieldSymbol.GetAttributes().Any(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default)))
{
fieldSymbols.Add(fieldSymbol);
}
}
}
// сгруппируем поля по классам, и сгенерируем новые исходные файлы
foreach (IGrouping <INamedTypeSymbol, IFieldSymbol> group in fieldSymbols.GroupBy(f => f.ContainingType))
{
CompilationUnitSyntax classDef = ProcessClass(group.Key, group.ToList(), attributeSymbol, notifySymbol, context, options);
if (classDef is null)
{
continue;
}
var classSource = classDef.ToFullString();
var filenameHint = $"{group.Key.Name}_autoNotify.cs";
context.AddSource(filenameHint, SourceText.From(classSource, Encoding.UTF8));
}
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
// get the name and type of the field
string fieldName = fieldSymbol.Name;
ITypeSymbol fieldType = fieldSymbol.Type;
// get the AutoNotify attribute from the field, and any associated data
AttributeData attributeData = fieldSymbol.GetAttributes().Single(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default));
TypedConstant overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
string propertyName = ChooseName();
if (propertyName.Length == 0 || propertyName == fieldName)
{
//TODO: issue a diagnostic that we can't process this field
return;
}
source.AppendLinesIndented(2, "");
source.AppendLinesIndented(2, $"/// <inheritdoc cref=\"{fieldName}\" />");
source.AppendLinesIndented(2, $"public {fieldType} {propertyName}");
source.AppendLinesIndented(2, "{");
source.AppendLinesIndented(3, $"get => this.{fieldName};");
source.AppendLinesIndented(3, "set");
source.AppendLinesIndented(3, "{");
source.AppendLinesIndented(4, $"this.{fieldName} = value;");
source.AppendLinesIndented(4, $"this.PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(nameof({propertyName})));");
source.AppendLinesIndented(3, "}");
source.AppendLinesIndented(2, "}");
string ChooseName()
{
if (!overridenNameOpt.IsNull)
{
return(overridenNameOpt.Value.ToString());
}
fieldName = fieldName.TrimStart('_');
if (fieldName.Length == 0)
{
return(string.Empty);
}
if (fieldName.Length == 1)
{
return(fieldName.ToUpper());
}
return(fieldName.Substring(0, 1).ToUpper() + fieldName.Substring(1));
}
}
private static bool IsSuppressable(IFieldSymbol fieldSymbol)
{
if (fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Matches(typeof(SerializeField)) || a.AttributeClass.Matches(typeof(SerializeReference))))
{
return(true);
}
if (fieldSymbol.DeclaredAccessibility == Accessibility.Public && fieldSymbol.ContainingType.Extends(typeof(Object)))
{
return(true);
}
return(false);
}
private IFieldSymbol GetExplicitlyAssignedField(IFieldSymbol originalField, SyntaxGenerator syntaxFactoryService)
{
var originalInitializer = GetFieldInitializer(originalField);
if (originalInitializer != null || !originalField.HasConstantValue)
{
return originalField;
}
var constantValueExpression = syntaxFactoryService.LiteralExpression(originalField.ConstantValue);
var newInitializer = CreateConstantValueInitializer(constantValueExpression);
return CodeGenerationSymbolFactory.CreateFieldSymbol(originalField.GetAttributes(), originalField.DeclaredAccessibility, originalField.GetSymbolModifiers(),
originalField.Type, originalField.Name, originalField.HasConstantValue, originalField.ConstantValue, newInitializer);
}
public void WriteFieldDefinition(IFieldSymbol fieldSymbol, bool doNotWrapStatic = false)
{
if (fieldSymbol.ContainingType.IsGenericType)
{
this.WriteTemplateDeclaration(fieldSymbol.ContainingType);
this.NewLine();
}
if (fieldSymbol.IsStatic && fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Name == "ThreadStaticAttribute" && a.AttributeClass.ContainingSymbol.Name == "System"))
{
this.TextSpan("thread_local");
this.WhiteSpace();
}
if (fieldSymbol.IsStatic && !doNotWrapStatic)
{
this.TextSpan("__static<");
}
this.WriteType(fieldSymbol.Type);
if (fieldSymbol.IsStatic && !doNotWrapStatic)
{
this.TextSpan(",");
this.WhiteSpace();
this.WriteType(fieldSymbol.ContainingType, true, true, true);
this.TextSpan(">");
}
this.WhiteSpace();
if (fieldSymbol.ContainingNamespace != null)
{
this.WriteNamespace(fieldSymbol.ContainingNamespace);
this.TextSpan("::");
}
var receiverType = fieldSymbol.ContainingType;
this.WriteTypeName(receiverType, false);
if (receiverType.IsGenericType)
{
this.WriteTemplateDefinition(fieldSymbol.ContainingType);
}
this.TextSpan("::");
this.WriteName(fieldSymbol);
}
private IFieldSymbol GetExplicitlyAssignedField(IFieldSymbol originalField, SyntaxGenerator syntaxFactoryService)
{
var originalInitializer = GetFieldInitializer(originalField);
if (originalInitializer != null || !originalField.HasConstantValue)
{
return(originalField);
}
var constantValueExpression = syntaxFactoryService.LiteralExpression(originalField.ConstantValue);
var newInitializer = CreateConstantValueInitializer(constantValueExpression);
return(CodeGenerationSymbolFactory.CreateFieldSymbol(originalField.GetAttributes(), originalField.DeclaredAccessibility, originalField.GetSymbolModifiers(),
originalField.Type, originalField.Name, originalField.HasConstantValue, originalField.ConstantValue, newInitializer));
}
public void Execute(GeneratorExecutionContext context)
{
string ns = Helper.GetNamespace(context, "AutoNotify");
// add the attribute text
string snippet = attributeText.Replace("{ns}", ns);
context.AddSource("AutoNotifyAttribute", SourceText.From(snippet, Encoding.UTF8));
// retreive the populated receiver
if (!(context.SyntaxReceiver is SyntaxReceiver receiver))
{
return;
}
// we're going to create a new compilation that contains the attribute.
// TODO: we should allow source generators to provide source during initialize, so that this step isn't required.
CSharpParseOptions options = (context.Compilation as CSharpCompilation).SyntaxTrees[0].Options as CSharpParseOptions;
Compilation compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(snippet, Encoding.UTF8), options));
// get the newly bound attribute, and INotifyPropertyChanged
INamedTypeSymbol attributeSymbol = compilation.GetTypeByMetadataName($"{ns}.AutoNotifyAttribute");
INamedTypeSymbol notifySymbol = compilation.GetTypeByMetadataName("System.ComponentModel.INotifyPropertyChanged");
// loop over the candidate fields, and keep the ones that are actually annotated
List <IFieldSymbol> fieldSymbols = new List <IFieldSymbol>();
foreach (FieldDeclarationSyntax field in receiver.CandidateFields)
{
SemanticModel model = compilation.GetSemanticModel(field.SyntaxTree);
foreach (VariableDeclaratorSyntax variable in field.Declaration.Variables)
{
// Get the symbol being decleared by the field, and keep it if its annotated
IFieldSymbol fieldSymbol = model.GetDeclaredSymbol(variable) as IFieldSymbol;
if (fieldSymbol.GetAttributes().Any(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default)))
{
fieldSymbols.Add(fieldSymbol);
}
}
}
// group the fields by class, and generate the source
foreach (IGrouping <INamedTypeSymbol, IFieldSymbol> group in fieldSymbols.GroupBy(f => f.ContainingType))
{
string classSource = ProcessClass(group.Key, group.ToList(), attributeSymbol, notifySymbol, context);
context.AddSource($"{group.Key.Name}_autoNotify.cs", SourceText.From(classSource, Encoding.UTF8));
}
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
// get the name and type of the field
string fieldName = fieldSymbol.Name;
ITypeSymbol fieldType = fieldSymbol.Type;
// get the GenerateProperty attribute from the field, and any associated data
AttributeData attributeData = fieldSymbol.GetAttributes().Single(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default));
TypedConstant overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
string propertyName = GeneratePropertyName(fieldName, overridenNameOpt);
if (propertyName.Length == 0 || propertyName == fieldName)
{
//TODO: issue a diagnostic that we can't process this field
return;
}
TypedConstant overridenAccessOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "AccessModifier").Value;
string accessModifier = overridenAccessOpt.IsNull ? "public" : overridenAccessOpt.Value.ToString();
TypedConstant overridenAccessGetOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "AccessModifierGet").Value;
string accessModifierGet = overridenAccessGetOpt.IsNull ? "" : $"{overridenAccessGetOpt.Value.ToString()} ";
TypedConstant overridenAccessSetOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "AccessModifierSet").Value;
string accessModifierSet = overridenAccessSetOpt.IsNull ? "" : $"{overridenAccessSetOpt.Value.ToString()} ";
source.Append($@"
{accessModifier} {fieldType} {propertyName}
{{
{accessModifierGet}get
{{
return this.{fieldName};
}}
{accessModifierSet}set
{{
var oldValue = this.{fieldName};
if (oldValue == value) return;
this.PropertyChanging?.Invoke(this, new DotNetApp.Extensions.PropertyChangingExtendedEventArgs<{fieldType}>(nameof({propertyName}), oldValue, value));
this.{fieldName} = value;
this.PropertyChanged?.Invoke(this, new DotNetApp.Extensions.PropertyChangedExtendedEventArgs<{fieldType}>(nameof({propertyName}), oldValue, value));
}}
}}
");
}
public void WriteFieldDeclaration(IFieldSymbol fieldSymbol, bool doNotWrapStatic = false)
{
if (fieldSymbol.IsStatic)
{
this.TextSpan("static");
this.WhiteSpace();
if (fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Name == "ThreadStaticAttribute" && a.AttributeClass.ContainingSymbol.Name == "System"))
{
this.TextSpan("thread_local");
this.WhiteSpace();
}
if (!doNotWrapStatic)
{
this.TextSpan("__static<");
}
}
var fieldSymbolOriginal = fieldSymbol as FieldSymbol;
if (fieldSymbolOriginal != null && fieldSymbolOriginal.IsFixed)
{
this.WriteType(((IPointerTypeSymbol)fieldSymbol.Type).PointedAtType);
}
else
{
this.WriteType(fieldSymbol.Type);
}
if (fieldSymbol.IsStatic && !doNotWrapStatic)
{
this.TextSpan(",");
this.WhiteSpace();
this.WriteType(fieldSymbol.ContainingType, true, true, true);
this.TextSpan(">");
}
this.WhiteSpace();
this.WriteName(fieldSymbol);
if (fieldSymbolOriginal != null && fieldSymbolOriginal.IsFixed)
{
this.TextSpan("[");
this.TextSpan(fieldSymbolOriginal.FixedSize.ToString());
this.TextSpan("]");
}
}
public static string GetWidgetFieldName (IFieldSymbol field)
{
foreach (AttributeData att in field.GetAttributes ()) {
var type = att.AttributeClass;
if (type.Name == "Widget" || type.Name == "WidgetAttribute") {
var pArgs = att.ConstructorArguments;
if (pArgs != null && pArgs.Length > 0) {
var exp = pArgs[0].Value;
if (exp != null)
return exp.ToString ();
} else {
return field.Name;
}
}
}
return field.Name;
}
private void ProcessField(StringBuilder source, IFieldSymbol fieldSymbol, ISymbol attributeSymbol)
{
string fieldName = fieldSymbol.Name;
ITypeSymbol fieldType = fieldSymbol.Type;
AttributeData attributeData = fieldSymbol.GetAttributes().Single(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default));
TypedConstant overridenNameOpt = attributeData.NamedArguments.SingleOrDefault(kvp => kvp.Key == "PropertyName").Value;
string propertyName = CreatePropertyName(fieldName, overridenNameOpt);
if (propertyName.Length == 0 || propertyName == fieldName)
{
//TODO: issue a diagnostic that we can't process this field
return;
}
source.Append($@"
public {fieldType} {propertyName}
{{
get => this.{fieldName};
set => Set(ref this.{fieldName}, value);
}}
");
string CreatePropertyName(string fieldName, TypedConstant overridenNameOpt)
{
if (!overridenNameOpt.IsNull)
{
return(overridenNameOpt.Value.ToString());
}
fieldName = fieldName.TrimStart('_');
if (fieldName.Length == 0)
{
return(string.Empty);
}
if (fieldName.Length == 1)
{
return(fieldName.ToUpper());
}
return(fieldName.Substring(0, 1).ToUpper() + fieldName.Substring(1));
}
}
private static bool BackingFieldHasNonSerializedAttribute(IFieldSymbol fieldSymbol, Compilation compilation)
{
ImmutableArray <AttributeData> attributes = fieldSymbol.GetAttributes();
for (int i = 0; i < attributes.Length; i++)
{
INamedTypeSymbol attributeSymbol = attributes[i].AttributeClass;
if (attributeSymbol.MetadataName == "NonSerializedAttribute" &&
attributeSymbol.Equals(compilation.GetTypeByMetadataName(MetadataNames.System_NonSerializedAttribute)))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Called for every syntax node in the compilation, we can inspect the nodes and save any information useful for generation
/// </summary>
public void OnVisitSyntaxNode(GeneratorSyntaxContext context)
{
// any field with at least one attribute is a candidate for property generation
if (context.Node is FieldDeclarationSyntax fieldDeclarationSyntax &&
fieldDeclarationSyntax.AttributeLists.Count > 0)
{
foreach (VariableDeclaratorSyntax variable in fieldDeclarationSyntax.Declaration.Variables)
{
// Get the symbol being declared by the field, and keep it if its annotated
IFieldSymbol fieldSymbol = context.SemanticModel.GetDeclaredSymbol(variable) as IFieldSymbol;
if (fieldSymbol.GetAttributes().Any(ad => ad.AttributeClass.ToDisplayString() == "Comet.AutoNotifyAttribute"))
{
Fields.Add(fieldSymbol);
}
}
}
}
public override MetadataItem VisitField(IFieldSymbol symbol)
{
var item = GetMetadataItem(symbol);
if (item == null)
{
return(null);
}
item.EnsureSyntax();
item.Syntax.Content = symbol.GenerateSyntax(item.Type, ApiFilter);
item.Modifiers = symbol.GetFieldModifiers();
item.Syntax.Return = CreateParameter(symbol, item, true);
item.Attributes = GetAttributeInfo(symbol.GetAttributes());
return(item);
}
public void Execute(GeneratorExecutionContext context)
{
// 新增 Attrbite 文字
context.AddSource("AutoNotifyAttribute", SourceText.From(attributeText, Encoding.UTF8));
// 獲取先前的語法接收器
if (!(context.SyntaxReceiver is SyntaxReceiver receiver))
{
return;
}
// 建立處目標名稱的屬性
CSharpParseOptions options = (context.Compilation as CSharpCompilation).SyntaxTrees[0].Options as CSharpParseOptions;
Compilation compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(attributeText, Encoding.UTF8), options));
// 獲取新繫結的 Attribute，並獲取INotifyPropertyChanged
INamedTypeSymbol attributeSymbol = compilation.GetTypeByMetadataName("AutoNotify.AutoNotifyAttribute");
INamedTypeSymbol notifySymbol = compilation.GetTypeByMetadataName("System.ComponentModel.INotifyPropertyChanged");
// 遍歷欄位，只保留有 AutoNotify 標註的欄位
List <IFieldSymbol> fieldSymbols = new List <IFieldSymbol>();
foreach (FieldDeclarationSyntax field in receiver.CandidateFields)
{
SemanticModel model = compilation.GetSemanticModel(field.SyntaxTree);
foreach (VariableDeclaratorSyntax variable in field.Declaration.Variables)
{
// 獲取欄位符號資訊，如果有 AutoNotify 標註則儲存
IFieldSymbol fieldSymbol = ModelExtensions.GetDeclaredSymbol(model, variable) as IFieldSymbol;
if (fieldSymbol.GetAttributes().Any(ad => ad.AttributeClass.Equals(attributeSymbol, SymbolEqualityComparer.Default)))
{
fieldSymbols.Add(fieldSymbol);
}
}
}
// 按 class 對欄位進行分組，並生成程式碼
foreach (IGrouping <INamedTypeSymbol, IFieldSymbol> group in fieldSymbols.GroupBy(f => f.ContainingType))
{
string classSource = ProcessClass(group.Key, group.ToList(), attributeSymbol, notifySymbol, context);
context.AddSource($"{group.Key.Name}_autoNotify.cs", SourceText.From(classSource, Encoding.UTF8));
}
}
public static FieldDeclarationSyntax GenerateFieldDeclaration(
IFieldSymbol field, CodeGenerationDestination destination, CodeGenerationOptions options)
{
var reusableSyntax = GetReuseableSyntaxNodeForSymbol<VariableDeclaratorSyntax>(field, options);
if (reusableSyntax != null)
{
var variableDeclaration = reusableSyntax.Parent as VariableDeclarationSyntax;
if (variableDeclaration != null)
{
var newVariableDeclaratorsList = new SeparatedSyntaxList<VariableDeclaratorSyntax>().Add(reusableSyntax);
var newVariableDeclaration = variableDeclaration.WithVariables(newVariableDeclaratorsList);
var fieldDecl = variableDeclaration.Parent as FieldDeclarationSyntax;
if (fieldDecl != null)
{
return fieldDecl.WithDeclaration(newVariableDeclaration);
}
}
}
var initializerNode = CodeGenerationFieldInfo.GetInitializer(field) as ExpressionSyntax;
var initializer = initializerNode != null
? SyntaxFactory.EqualsValueClause(initializerNode)
: GenerateEqualsValue(field);
var fieldDeclaration = SyntaxFactory.FieldDeclaration(
AttributeGenerator.GenerateAttributeLists(field.GetAttributes(), options),
GenerateModifiers(field, options),
SyntaxFactory.VariableDeclaration(
field.Type.GenerateTypeSyntax(),
SyntaxFactory.SingletonSeparatedList(
AddAnnotationsTo(field, SyntaxFactory.VariableDeclarator(field.Name.ToIdentifierToken(), null, initializer)))));
return AddCleanupAnnotationsTo(
ConditionallyAddDocumentationCommentTo(fieldDeclaration, field, options));
}
private static string GetNewFieldName(IFieldSymbol fieldSymbol)
{
var name = fieldSymbol.Name.Trim('_');
if (name.Length > 2 && char.IsLetter(name[0]) && name[1] == '_')
{
name = name.Substring(2);
}
if (name.Length == 0)
{
return fieldSymbol.Name;
}
if (name.Length > 2 && char.IsUpper(name[0]) && char.IsLower(name[1]))
{
name = char.ToLower(name[0]) + name.Substring(1);
}
if (fieldSymbol.IsStatic)
{
// Check for ThreadStatic private fields.
if (fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Name.Equals("ThreadStaticAttribute", StringComparison.Ordinal)))
{
return "t_" + name;
}
else
{
return "s_" + name;
}
}
return "_" + name;
}
private bool IsFieldSerializableByAttributes(IFieldSymbol field)
{
if (field.GetAttributes()
.Any(attr => s_serializingFieldAttributes.Contains(NameHelper.GetFullName(attr.AttributeClass))))
{
return true;
}
return false;
}
internal static bool IsValidField(IFieldSymbol field, TypeDeclarationSyntax type)
{
if (field == null || field.GetAttributes().Count() > 0)
return false;
foreach (var m in type.Members.OfType<FieldDeclarationSyntax>())
{
foreach (var i in m.Declaration.Variables)
{
if (i.SpanStart == field.Locations.First().SourceSpan.Start)
{
if (i.Initializer != null)
return false;
break;
}
}
}
return true;
}