Move pub into sdk/lib/_internal.

utils/pub/validator/dependency.dart

Index: utils/pub/validator/dependency.dart
diff --git a/utils/pub/validator/dependency.dart b/utils/pub/validator/dependency.dart
deleted file mode 100644
index 711e82da91242309b8b67015e098b733d429b667..0000000000000000000000000000000000000000
--- a/utils/pub/validator/dependency.dart
+++ /dev/null
@@ -1,101 +0,0 @@
-// Copyright (c) 2012, 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.
-
-library dependency_validator;
-
-import 'dart:async';
-
-import '../entrypoint.dart';
-import '../hosted_source.dart';
-import '../http.dart';
-import '../package.dart';
-import '../path_source.dart';
-import '../utils.dart';
-import '../validator.dart';
-import '../version.dart';
-
-/// A validator that validates a package's dependencies.
-class DependencyValidator extends Validator {
-  DependencyValidator(Entrypoint entrypoint)
-    : super(entrypoint);
-
-  Future validate() {
-    return Future.forEach(entrypoint.root.pubspec.dependencies, (dependency) {
-      if (dependency.source is! HostedSource) {
-        return _warnAboutSource(dependency);
-      }
-
-      if (dependency.name == entrypoint.root.name) {
-        warnings.add('You don\'t need to explicitly depend on your own '
-                'package.\n'
-            'Pub enables "package:${entrypoint.root.name}" imports '
-                'implicitly.');
-        return new Future.value();
-      }
-
-      if (dependency.constraint.isAny) _warnAboutConstraint(dependency);
-
-      return new Future.value();
-    });
-  }
-
-  /// Warn that dependencies should use the hosted source.
-  Future _warnAboutSource(PackageRef ref) {
-    return entrypoint.cache.sources['hosted']
-        .getVersions(ref.name, ref.name)
-        .catchError((e) => <Version>[])
-        .then((versions) {
-      var constraint;
-      var primary = Version.primary(versions);
-      if (primary != null) {
-        constraint = _constraintForVersion(primary);
-      } else {
-        constraint = ref.constraint.toString();
-        if (!ref.constraint.isAny && ref.constraint is! Version) {
-          constraint = '"$constraint"';
-        }
-      }
-
-      // Path sources are errors. Other sources are just warnings.
-      var messages = warnings;
-      if (ref.source is PathSource) {
-        messages = errors;
-      }
-
-      messages.add('Don\'t depend on "${ref.name}" from the ${ref.source.name} '
-              'source. Use the hosted source instead. For example:\n'
-          '\n'
-          'dependencies:\n'
-          '  ${ref.name}: $constraint\n'
-          '\n'
-          'Using the hosted source ensures that everyone can download your '
-              'package\'s dependencies along with your package.');
-    });
-  }
-
-  /// Warn that dependencies should have version constraints.
-  void _warnAboutConstraint(PackageRef ref) {
-    var lockFile = entrypoint.loadLockFile();
-    var message = 'Your dependency on "${ref.name}" should have a version '
-        'constraint.';
-    var locked = lockFile.packages[ref.name];
-    if (locked != null) {
-      message = '$message For example:\n'
-        '\n'
-        'dependencies:\n'
-        '  ${ref.name}: ${_constraintForVersion(locked.version)}\n';
-    }
-    warnings.add("$message\n"
-        "Without a constraint, you're promising to support all future "
-        "versions of ${ref.name}.");
-  }
-
-  /// Returns the suggested version constraint for a dependency that was tested
-  /// against [version].
-  String _constraintForVersion(Version version) {
-    if (version.major != 0) return '">=$version <${version.major + 1}.0.0"';
-    return '">=$version <${version.major}.${version.minor}.'
-        '${version.patch + 1}"';
-  }
-}