SourceKit.Generators.Builder 1.2.45

SourceKit.Generators.Builder

Use [GenerateBuilder] attribute to generate builder.

• Only record or record struct types are supported
• Builder is a nested class Builder
• For collection properties field of type List<> will be generated
• For collection properties, methods With{PropName} and With{PropName}s will be generated
• If collection element type is IComparable or IComparable<TSelf> the .Distinct LINQ method would be called on .Build method
• If collection property is List<> or HashSet<> then it will be converted to this collection respectively, otherwise, ToArray method will be called

You can use SomeType.Build() static method to shorthand create type instance using generated builder

[GenerateBuilder]
public partial record SomeQuery(IReadOnlyCollection<Guid> Ids, int Count = 10);

...

var query = SomeQuery.Build(x => x.WithCount(2).WithId(Guid.NewGuid());

Default values for record properties are supported

Required properties

You can annotate property with [RequiredValue] attribute to force compile time error when it is not initialized withing Build method of model.

[GenerateBuilder]
public partial record SomeQuery(long[] Ids, [RequiredValue] int PageSize);

The following code will produce an error.

var query = SomeQuery.Build(x => x.WithId(1));