pkg/dartdev/lib/src/native_assets.dart

// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:async';
import 'dart:io';

import 'package:dartdev/src/sdk.dart';
import 'package:logging/logging.dart';
import 'package:native_assets_builder/native_assets_builder.dart';
import 'package:native_assets_cli/native_assets_cli.dart';

import 'core.dart';

final logger = Logger('')
  ..onRecord.listen((LogRecord record) {
    final levelValue = record.level.value;
    if (levelValue >= Level.SEVERE.value) {
      log.stderr(record.message);
    } else if (levelValue >= Level.INFO.value) {
      log.stdout(record.message);
    } else {
      log.trace(record.message);
    }
  });

/// Compiles all native assets for host OS in JIT mode.
///
/// Returns `null` on missing package_config.json, failing gracefully.
Future<List<Asset>?> compileNativeAssetsJit() async {
  final workingDirectory = Directory.current.uri;
  // TODO(https://github.com/dart-lang/package_config/issues/126): Use
  // package config resolution from package:package_config.
  if (!await File.fromUri(
          workingDirectory.resolve('.dart_tool/package_config.json'))
      .exists()) {
    return null;
  }
  final assets = await NativeAssetsBuildRunner(
    // This always runs in JIT mode.
    dartExecutable: Uri.file(sdk.dart),
    logger: logger,
  ).build(
    workingDirectory: workingDirectory,
    // When running in JIT mode, only the host OS needs to be build.
    target: Target.current,
    // When running in JIT mode, only dynamic libraries are supported.
    linkModePreference: LinkModePreference.dynamic,
    // Dart has no concept of release vs debug, default to release.
    buildMode: BuildMode.release,
    includeParentEnvironment: true,
  );
  return assets;
}

/// Compiles all native assets for host OS in JIT mode, and creates the
/// native assets yaml file.
///
/// Used in `dart run` and `dart test`.
///
/// Returns `null` on missing package_config.json, failing gracefully.
Future<Uri?> compileNativeAssetsJitYamlFile() async {
  final assets = await compileNativeAssetsJit();
  if (assets == null) return null;

  final workingDirectory = Directory.current.uri;
  final assetsUri = workingDirectory.resolve('.dart_tool/native_assets.yaml');
  final nativeAssetsYaml = '''# Native assets mapping for host OS in JIT mode.
# Generated by dartdev and package:native.
${assets.toNativeAssetsFile()}''';
  final assetFile = File(assetsUri.toFilePath());
  await assetFile.writeAsString(nativeAssetsYaml);
  return assetsUri;
}