Revert "Revert "Use native async/await support in pub.""

sdk/lib/_internal/pub_generated/lib/src/validator/name.dart

Index: sdk/lib/_internal/pub_generated/lib/src/validator/name.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/validator/name.dart b/sdk/lib/_internal/pub_generated/lib/src/validator/name.dart
deleted file mode 100644
index 8b558846e3f7cdecab76867a3c1fae09aae1b415..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/lib/src/validator/name.dart
+++ /dev/null
@@ -1,133 +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 pub.validator.name;
-
-import 'dart:async';
-
-import 'package:path/path.dart' as path;
-
-import '../entrypoint.dart';
-import '../utils.dart';
-import '../validator.dart';
-
-/// Dart reserved words, from the Dart spec.
-final _RESERVED_WORDS = [
-    "assert",
-    "break",
-    "case",
-    "catch",
-    "class",
-    "const",
-    "continue",
-    "default",
-    "do",
-    "else",
-    "extends",
-    "false",
-    "final",
-    "finally",
-    "for",
-    "if",
-    "in",
-    "is",
-    "new",
-    "null",
-    "return",
-    "super",
-    "switch",
-    "this",
-    "throw",
-    "true",
-    "try",
-    "var",
-    "void",
-    "while",
-    "with"];
-
-/// A validator that validates the name of the package and its libraries.
-class NameValidator extends Validator {
-  NameValidator(Entrypoint entrypoint)
-      : super(entrypoint);
-
-  Future validate() {
-    return new Future.sync(() {
-      _checkName(
-          entrypoint.root.name,
-          'Package name "${entrypoint.root.name}"',
-          isPackage: true);
-
-      var libraries = _libraries;
-      for (var library in libraries) {
-        var libName = path.basenameWithoutExtension(library);
-        _checkName(
-            libName,
-            'The name of "$library", "$libName",',
-            isPackage: false);
-      }
-
-      if (libraries.length == 1) {
-        var libName = path.basenameWithoutExtension(libraries[0]);
-        if (libName == entrypoint.root.name) return;
-        warnings.add(
-            'The name of "${libraries[0]}", "$libName", should match '
-                'the name of the package, "${entrypoint.root.name}".\n'
-                'This helps users know what library to import.');
-      }
-    });
-  }
-
-  /// Returns a list of all libraries in the current package as paths relative
-  /// to the package's root directory.
-  List<String> get _libraries {
-    var libDir = entrypoint.root.path("lib");
-    return entrypoint.root.listFiles(
-        beneath: "lib").map(
-            (file) =>
-                path.relative(
-                    file,
-                    from: path.dirname(
-                        libDir))).where(
-                            (file) =>
-                                !path.split(file).contains("src") && path.extension(file) == '.dart').toList();
-  }
-
-  void _checkName(String name, String description, {bool isPackage}) {
-    // Packages names are more stringent than libraries.
-    var messages = isPackage ? errors : warnings;
-
-    if (name == "") {
-      errors.add("$description may not be empty.");
-    } else if (!new RegExp(r"^[a-zA-Z0-9_]*$").hasMatch(name)) {
-      messages.add(
-          "$description may only contain letters, numbers, and " "underscores.\n"
-              "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (!new RegExp(r"^[a-zA-Z_]").hasMatch(name)) {
-      messages.add(
-          "$description must begin with a letter or underscore.\n"
-              "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (_RESERVED_WORDS.contains(name.toLowerCase())) {
-      messages.add(
-          "$description may not be a reserved word in Dart.\n"
-              "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (new RegExp(r"[A-Z]").hasMatch(name)) {
-      warnings.add(
-          '$description should be lower-case. Maybe use ' '"${_unCamelCase(name)}"?');
-    }
-  }
-
-  String _unCamelCase(String source) {
-    var builder = new StringBuffer();
-    var lastMatchEnd = 0;
-    for (var match in new RegExp(r"[a-z]([A-Z])").allMatches(source)) {
-      builder
-          ..write(source.substring(lastMatchEnd, match.start + 1))
-          ..write("_")
-          ..write(match.group(1).toLowerCase());
-      lastMatchEnd = match.end;
-    }
-    builder.write(source.substring(lastMatchEnd));
-    return builder.toString().toLowerCase();
-  }
-}