tapioca-compilers-dry_struct

This script is a Tapioca's custom DSL compiler for dry-struct.

From this ruby code,

class Example < Dry::Struct
  attribute  :attr01, Types::String
  attribute  :attr02, Types::String.optional
  attribute? :attr03, Types::String
  attribute  :attr04, Types::Integer
  attribute  :attr05, Types::Date
  attribute  :attr06, Types::Array.of(Types::String)
  attribute  :attr07, Types.Constructor(User)
  attribute  :attr08, Types::String | Types::Integer
  attribute  :attr09, Types::Maybe::String
end

the compiler generates a rbi file below.

class Example
  sig { returns(String) }
  def attr01; end

  sig { returns(T.nilable(String)) }
  def attr02; end

  sig { returns(T.nilable(String)) }
  def attr03; end

  sig { returns(Integer) }
  def attr04; end

  sig { returns(Date) }
  def attr05; end

  sig { returns(T::Array[String]) }
  def attr06; end

  sig { returns(User) }
  def attr07; end

  sig { returns(T.any(String, Integer)) }
  def attr08; end

  sig { returns(T.any(Dry::Monads::Maybe::Some, Dry::Monads::Maybe::None)) }
  def attr09; end
end

Installation

Add this line to your application’s Gemfile:

gem 'tapioca-compilers-dry_struct'

And then execute:

$ bundle

all the gem needs to do is to place the DSL compiler inside the lib/tapioca/dsl/compilers folder and it will be automatically discovered and loaded by Tapioca.

https://github.com/Shopify/tapioca/blob/v0.10.2/README.md#writing-custom-dsl-compilers

Tapioca automatically load the compiler inside gem, just you need to do is type a command below.

$ bundle exec tapioca dsl

Development

Execute ./bin/dsl generates rbi files under sorbet/rbi/dsl/. If you need to test another dry-struct, add or edit rb files under spec/examples/ and generate rbi files.

A compiler itself exists in lib/tapioca/dsl/compilers/dry_struct.rb.

Test

bundle exec rake spec

Environment Variables

You can change behaviours of the compiler by environment variables.

DRY_PREFER_PLAIN_TIME

\	Ruby `Time` is typed as
0 (DEFAULT)	`::ActiveSupport::TimeWithZone`
1	`::Time`

DRY_USE_EXPERIMENTAL_SHAPE

\	`Types::Hash.schema(name: Types::String, age: Types::Integer)` is typed as
0 (DEFAULT)	`::T::Hash[::T.untyped, ::T.untyped]`
1	`{ name: ::String, age: ::Integer }`

References

https://discourse.dry-rb.org/t/dry-rb-sorbet-can-we-unite/961

Shopify/tapioca#1210