Implement AstBuilder support for library, part, and part-of declarations.

pkg/analyzer/test/generated/parser_test.dart

 // Copyright (c) 2014, 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 analyzer.test.generated.parser_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_ast_factory.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
@@ skipping 13737 matching lines @@
     Directive directive = parseFullDirective();
     expect(directive, isNotNull);
     assertNoErrors();
     expect(directive, new isInstanceOf<LibraryDirective>());
     LibraryDirective libraryDirective = directive;
     expect(libraryDirective.libraryKeyword, isNotNull);
     expect(libraryDirective.name, isNotNull);
     expect(libraryDirective.semicolon, isNotNull);
   }
 
+  void test_parseDirective_library_1_component() {
+    createParser("library a;");
+    var lib = parseFullDirective() as LibraryDirective;
+    expect(lib.name.components, hasLength(1));
+    expect(lib.name.components[0].name, 'a');
+  }
+
+  void test_parseDirective_library_2_components() {
+    createParser("library a.b;");
+    var lib = parseFullDirective() as LibraryDirective;
+    expect(lib.name.components, hasLength(2));
+    expect(lib.name.components[0].name, 'a');
+    expect(lib.name.components[1].name, 'b');
+  }
+
+  void test_parseDirective_library_3_components() {
+    createParser("library a.b.c;");
+    var lib = parseFullDirective() as LibraryDirective;
+    expect(lib.name.components, hasLength(3));
+    expect(lib.name.components[0].name, 'a');
+    expect(lib.name.components[1].name, 'b');
+    expect(lib.name.components[2].name, 'c');
+  }
+
   void test_parseDirective_part() {
     createParser("part 'lib/lib.dart';");
     Directive directive = parseFullDirective();
     expect(directive, isNotNull);
     assertNoErrors();
     expect(directive, new isInstanceOf<PartDirective>());
     PartDirective partDirective = directive;
     expect(partDirective.partKeyword, isNotNull);
     expect(partDirective.uri, isNotNull);
     expect(partDirective.semicolon, isNotNull);
   }
 
+  void test_parseDirective_part_of_1_component() {
+    createParser("part of a;");
+    var partOf = parseFullDirective() as PartOfDirective;
+    expect(partOf.libraryName.components, hasLength(1));
+    expect(partOf.libraryName.components[0].name, 'a');
+  }
+
+  void test_parseDirective_part_of_2_components() {
+    createParser("part of a.b;");
+    var partOf = parseFullDirective() as PartOfDirective;
+    expect(partOf.libraryName.components, hasLength(2));
+    expect(partOf.libraryName.components[0].name, 'a');
+    expect(partOf.libraryName.components[1].name, 'b');
+  }
+
+  void test_parseDirective_part_of_3_components() {
+    createParser("part of a.b.c;");
+    var partOf = parseFullDirective() as PartOfDirective;
+    expect(partOf.libraryName.components, hasLength(3));
+    expect(partOf.libraryName.components[0].name, 'a');
+    expect(partOf.libraryName.components[1].name, 'b');
+    expect(partOf.libraryName.components[2].name, 'c');
+  }
+
   void test_parseDirective_partOf() {
     createParser("part of l;");
     Directive directive = parseFullDirective();
     expect(directive, isNotNull);
     assertNoErrors();
     expect(directive, new isInstanceOf<PartOfDirective>());
     PartOfDirective partOfDirective = directive;
     expect(partOfDirective.partKeyword, isNotNull);
     expect(partOfDirective.ofKeyword, isNotNull);
     expect(partOfDirective.libraryName, isNotNull);
@@ skipping 711 matching lines @@
     expect(typeAlias.name, isNotNull);
     expect(typeAlias.typeParameters, isNull);
     expect(typeAlias.semicolon, isNotNull);
     GenericFunctionType functionType = typeAlias.functionType;
     expect(functionType, isNotNull);
     expect(functionType.parameters, isNotNull);
     expect(functionType.returnType, isNotNull);
     expect(functionType.typeParameters, isNull);
   }
 }