OpenAPI ↔ Java. This is one compiler in a suite, all focussed on the same task: Compiler Driven Development (CDD).

Each compiler is written in its target language, is whitespace and comment sensitive, and has both an SDK and CLI.

The core philosophy of Compiler Driven Development (CDD) is synchronization without compromise. Where traditional generators silo your API boundaries into read-only files, this compiler natively merges changes into your codebase via a robust, [whitespace and comment aware] Abstract Syntax Tree (AST) driven parser & emitter. It bridges the gap between design and implementation, allowing you to seamlessly generate SDKs from a spec or extract a spec from existing code. By keeping your APIs, SDKs, and tests in continuous, automated alignment, it drastically improves both delivery speed and software reliability.

The CLI—at a minimum—has:

• cdd-java --help
• cdd-java --version
• cdd-java from_openapi to_sdk_cli -i spec.json
• cdd-java from_openapi to_sdk -i spec.json
• cdd-java from_openapi to_server -i spec.json
• cdd-java to_openapi -f path/to/code
• cdd-java to_docs_json --no-imports --no-wrapping -i spec.json
• cdd-java serve_json_rpc --port 8080 --listen 0.0.0.0

import com.cdd.CddGenerator;
import com.cdd.Config;

public class Main {
    public static void main(String[] args) {
        Config config = new Config("spec.json", "src/models");
        CddGenerator.generateSdk(config);
        System.out.println("SDK generation complete.");
    }
}

mvn compile

You can use standard tooling commands or the included cross-platform Makefiles to fetch dependencies, build, and test:

mvn compile
mvn test
# or
make deps
make build
make test
# or on Windows
.\make.bat deps
.\make.bat build
.\make.bat test

See PUBLISH.md for packaging and releasing.

The cdd-java compiler leverages a unified architecture to support various facets of API and code lifecycle management. For a deep dive into the compiler's design, see ARCHITECTURE.md.

• Compilation:
  • OpenAPI → Java: Generate idiomatic native models, network routes, client SDKs, and boilerplate directly from OpenAPI (.json / .yaml) specifications.
  • Java → OpenAPI: Statically parse existing Java source code and emit compliant OpenAPI specifications.
• AST-Driven & Safe: Employs static analysis instead of unsafe dynamic execution or reflection, allowing it to safely parse and emit code even for incomplete or un-compilable project states.
• Seamless Sync: Keep your docs, tests, database, clients, and routing in perfect harmony. Update your code, and generate the docs; or update the docs, and generate the code.

Uncommon Features:

cdd-java supports standard CDD features.

Usage: cdd-java [OPTIONS] <COMMAND>

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.