private static void MakeWithBackingFieldNotify(DocumentEditor editor, PropertyDeclarationSyntax propertyDeclaration, IMethodSymbol invoker, SemanticModel semanticModel, CancellationToken cancellationToken)
{
var classDeclaration = propertyDeclaration.FirstAncestorOrSelf <ClassDeclarationSyntax>();
if (classDeclaration == null)
{
return;
}
if (IsSimpleAssignmentOnly(propertyDeclaration, out var setter, out var statement, out var assignment, out _))
{
var underscoreFields = CodeStyle.UnderscoreFields(semanticModel);
var property = semanticModel.GetDeclaredSymbolSafe(propertyDeclaration, cancellationToken);
var notifyStatement = SyntaxFactory
.ParseStatement(Snippet.OnPropertyChanged(invoker, property.Name, underscoreFields))
.WithLeadingTrivia(SyntaxFactory.ElasticMarker)
.WithTrailingTrivia(SyntaxFactory.ElasticMarker)
.WithSimplifiedNames()
.WithAdditionalAnnotations(Formatter.Annotation);
if (setter.ExpressionBody != null)
{
editor.ReplaceNode(
setter,
(x, _) =>
{
var old = (AccessorDeclarationSyntax)x;
return(old.WithBody(
SyntaxFactory.Block(
SyntaxFactory.ExpressionStatement(assignment),
notifyStatement))
.WithExpressionBody(null)
.WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.None)));
});
editor.FormatNode(propertyDeclaration);
}
else if (setter.Body != null)
{
editor.InsertAfter(statement, notifyStatement);
editor.FormatNode(propertyDeclaration);
}
}
}
private static void AddToIf(DocumentEditor editor, IfStatementSyntax ifSetAndRaise, ExpressionStatementSyntax invocation)
{
if (ifSetAndRaise.Statement is BlockSyntax body)
{
editor.RemoveNode(invocation);
if (body.Statements.Count == 0)
{
editor.ReplaceNode(
body,
body.AddStatements(invocation.WithLeadingElasticLineFeed()));
}
else
{
editor.InsertAfter(body.Statements.Last(), invocation.WithLeadingElasticLineFeed());
}
}
else
{
if (ifSetAndRaise.Statement == null)
{
editor.RemoveNode(invocation);
editor.ReplaceNode(
ifSetAndRaise,
(x, _) => ((IfStatementSyntax)x)
.WithStatement(SyntaxFactory.Block(ifSetAndRaise.Statement, invocation))
.WithSimplifiedNames()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation));
}
else
{
editor.RemoveNode(invocation);
editor.ReplaceNode(
ifSetAndRaise.Statement,
(x, _) => SyntaxFactory.Block(ifSetAndRaise.Statement, invocation)
.WithSimplifiedNames()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation));
}
}
editor.FormatNode(ifSetAndRaise);
}
private static void MakeWithBackingFieldNotifyWhenValueChanges(DocumentEditor editor, PropertyDeclarationSyntax propertyDeclaration, IMethodSymbol invoker, SemanticModel semanticModel, CancellationToken cancellationToken)
{
var classDeclaration = propertyDeclaration.FirstAncestorOrSelf <ClassDeclarationSyntax>();
if (classDeclaration == null)
{
return;
}
if (propertyDeclaration.TryGetSetter(out var setter))
{
if (setter.ExpressionBody != null &&
IsSimpleAssignmentOnly(propertyDeclaration, out _, out _, out var assignment, out _))
{
var property = semanticModel.GetDeclaredSymbolSafe(propertyDeclaration, cancellationToken);
var underscoreFields = CodeStyle.UnderscoreFields(semanticModel);
var code = StringBuilderPool.Borrow()
.AppendLine($"public Type PropertyName")
.AppendLine("{")
.AppendLine($" get => {assignment.Left};")
.AppendLine()
.AppendLine(" set")
.AppendLine(" {")
.AppendLine($" if ({Snippet.EqualityCheck(property.Type, "value", assignment.Left.ToString(), semanticModel)})")
.AppendLine(" {")
.AppendLine($" return;")
.AppendLine(" }")
.AppendLine()
.AppendLine($" {assignment};")
.AppendLine($" {Snippet.OnPropertyChanged(invoker, property.Name, underscoreFields)}")
.AppendLine(" }")
.AppendLine("}")
.Return();
var template = ParseProperty(code);
editor.ReplaceNode(
setter,
(x, _) =>
{
var old = (AccessorDeclarationSyntax)x;
return(old.WithBody(template.Setter().Body)
.WithExpressionBody(null)
.WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.None)));
});
editor.FormatNode(propertyDeclaration);
}
if (setter.Body?.Statements.Count == 1 &&
IsSimpleAssignmentOnly(propertyDeclaration, out _, out var statement, out assignment, out _))
{
var property = semanticModel.GetDeclaredSymbolSafe(propertyDeclaration, cancellationToken);
var code = StringBuilderPool.Borrow()
.AppendLine($" if ({Snippet.EqualityCheck(property.Type, "value", assignment.Left.ToString(), semanticModel)})")
.AppendLine(" {")
.AppendLine($" return;")
.AppendLine(" }")
.AppendLine()
.Return();
var ifStatement = SyntaxFactory.ParseStatement(code)
.WithSimplifiedNames()
.WithLeadingElasticLineFeed()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation);
editor.InsertBefore(
statement,
ifStatement);
var underscoreFields = CodeStyle.UnderscoreFields(semanticModel);
var notifyStatement = SyntaxFactory
.ParseStatement(
Snippet.OnPropertyChanged(invoker, property.Name, underscoreFields))
.WithSimplifiedNames()
.WithLeadingElasticLineFeed()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation);
editor.InsertAfter(statement, notifyStatement);
editor.FormatNode(propertyDeclaration);
}
}
}