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Manifold javac plugin support

Manifold extends the type system and compiler to support type-safe metaprogramming (Type Manifolds) and language extensions.

Type Manifolds

Integrates with javac to enable direct use of data, schemas, and domain-specific constructs as typed elements in Java code. Supported sources include:

• JSON, XML, YAML, CSV • SQL schemas and queries • GraphQL schemas • Properties and configuration files

These types are available without code generation or runtime reflection (e.g., type-safely use native SQL in your code)

Language Extensions

Manifold provides optional language features, including:

• Extension methods • Parts (compositional inheritance) • Properties • Optional parameters • Operator overloading • Tuple expressions • Structural interfaces • String templates • Unit expressions • Compilation directives • ... and more

Each feature is modular and can be used independently.

Integration

• Integrates with Java as a javac plugin • Supports incremental adoption • Compatible with existing build tools • Supports Java release 8 - 26

Resources

• https://github.com/manifold-systems/manifold