knowa_kernel 2.2.0

The runtime that executes Knowa code-push patches inside a Flutter app. Dependency-free. You do not depend on it directly: knowa_sdk does.

example/example.dart

// Runs a small patch on the knowa_kernel runtime.
//
// Patches are normally compiled from Dart source by the Knowa CLI and run by
// knowa_sdk, so an app does not use this package directly. This example builds
// the compiled form of the following patch by hand:
//
//   @KnowaOverride('greeting.message')
//   String message(String name) => 'Hello, $name!';
import 'package:knowa_kernel/knowa_kernel.dart';

void main() {
  const module = KModule(
    functions: {
      'message': KFunction(
        name: 'message',
        params: [KParam(0, 'name')],
        frameSize: 1,
        body: KReturn(KStringInterp([
          KLiteral('Hello, '),
          KLocalGet(0, 'name'),
          KLiteral('!'),
        ])),
      ),
    },
    classes: {},
    overrides: {'greeting.message': 'message'},
  );

  // A patch is delivered in the compact KIR wire format.
  final bytes = encodeKirModule(module);
  final interpreter = KInterpreter(decodeKirModule(bytes));

  print('${bytes.length}-byte patch');
  print(interpreter.callOverride('greeting.message', ['Knowa']));
}