Future build()

in lib/src/builder.dart [57:120]
45 lines of code
5 McCabe index (conditional complexity)

  Future<void> build(BuildStep buildStep) async {
    if (!await buildStep.resolver.isLibrary(buildStep.inputId)) return;
    final entryLib = await buildStep.inputLibrary;
    if (entryLib == null) return;
    final sourceLibIsNonNullable = entryLib.isNonNullableByDefault;
    final mockLibraryAsset = buildStep.inputId.changeExtension('.mocks.dart');
    final inheritanceManager = InheritanceManager3();
    final mockTargetGatherer =
        _MockTargetGatherer(entryLib, inheritanceManager);

    var entryAssetId = await buildStep.resolver.assetIdForElement(entryLib);
    final assetUris = await _resolveAssetUris(buildStep.resolver,
        mockTargetGatherer._mockTargets, entryAssetId.path, entryLib);

    final mockLibraryInfo = _MockLibraryInfo(mockTargetGatherer._mockTargets,
        assetUris: assetUris,
        entryLib: entryLib,
        inheritanceManager: inheritanceManager);

    if (mockLibraryInfo.fakeClasses.isEmpty &&
        mockLibraryInfo.mockClasses.isEmpty) {
      // Nothing to mock here!
      return;
    }

    final mockLibrary = Library((b) {
      // These comments are added after import directives; leading newlines
      // are necessary. Individual rules are still ignored to preserve backwards
      // compatibility with older versions of Dart.
      b.body.add(Code('\n\n// ignore_for_file: type=lint\n'));
      b.body.add(Code('// ignore_for_file: avoid_redundant_argument_values\n'));
      // We might generate a setter without a corresponding getter.
      b.body.add(Code('// ignore_for_file: avoid_setters_without_getters\n'));
      // We don't properly prefix imported class names in doc comments.
      b.body.add(Code('// ignore_for_file: comment_references\n'));
      // We might import a package's 'src' directory.
      b.body.add(Code('// ignore_for_file: implementation_imports\n'));
      // `Mock.noSuchMethod` is `@visibleForTesting`, but the generated code is
      // not always in a test directory; the Mockito `example/iss` tests, for
      // example.
      b.body.add(Code(
          '// ignore_for_file: invalid_use_of_visible_for_testing_member\n'));
      b.body.add(Code('// ignore_for_file: prefer_const_constructors\n'));
      // The code_builder `asA` API unconditionally adds defensive parentheses.
      b.body.add(Code('// ignore_for_file: unnecessary_parenthesis\n'));
      // The generator appends a suffix to fake classes
      b.body.add(Code('// ignore_for_file: camel_case_types\n\n'));
      b.body.addAll(mockLibraryInfo.fakeClasses);
      b.body.addAll(mockLibraryInfo.mockClasses);
    });

    final emitter = DartEmitter.scoped(
        orderDirectives: true, useNullSafetySyntax: sourceLibIsNonNullable);
    final rawOutput = mockLibrary.accept(emitter).toString();
    final mockLibraryContent = DartFormatter().format('''
// Mocks generated by Mockito $packageVersion from annotations
// in ${entryLib.definingCompilationUnit.source.uri.path}.
// Do not manually edit this file.

$rawOutput
''');

    await buildStep.writeAsString(mockLibraryAsset, mockLibraryContent);
  }