code_generation_samples

Welcome to code_generation_samples, a suite of packages that demonstrate various code generation techniques in Dart and Flutter. This repository is designed as an educational tool to help developers learn how to simplify and automate tasks through the use of code generation.

Additionally, this collection is featured as part of a presentation at FlutterKaigi, a renowned Flutter conference taking place in Japan on November 10th, 2023.

Packages Included

This repository includes the following packages, each tailored for a specific code generation scenario:

This repository includes the following packages, each tailored for a specific code generation scenario:

• copy_builder: A basic builder package that generates duplicate files for all input files.
• copy_builder_annotation: Provides the @Copy annotation, which is recognized by copy_builder_for_annotation.
• copy_builder_for_annotation: An advanced version of copy_builder that targets files marked with @Copy annotations.
• from_json_generator: A builder that generates a fromJson method for classes decorated with annotations.
• from_json_generator_annotation: Supplies annotations that drive the behavior of from_json_generator.

Quick Start

To see code generation in action, run the following commands in the copy_builder, copy_builder_for_annotation, and from_json_generator package directories. The generated files can be found within the test/helper directories of each package.

dart pub get
dart run build_runner build --delete-conflicting-outputs