update AstBuilder to support part of <uri>

pkg/analyzer/test/generated/parser_fasta_test.dart

 // Copyright (c) 2017, 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 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart' as analyzer;
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart' show ErrorReporter;
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/fasta/ast_builder.dart';
@@ skipping 263 matching lines @@
   set enableNnbd(bool value) {
     if (value == true) {
       // TODO(paulberry,ahe): non-null-by-default syntax is not supported by
       // Fasta.
       throw new UnimplementedError();
     }
   }
 
   @override
   set enableUriInPartOf(bool value) {
-    if (value == true) {
-      // TODO(paulberry,ahe): URIs in "part of" declarations are not supported
-      // by Fasta.
+    if (value == false) {
+      // URIs in "part of" declarations cannot be disabled in Fasta.
       throw new UnimplementedError();

[kevmoo, 2017/08/16 20:36:29]

Nit: might be nice to actually put the content of the comment into the error we
throw? :-)

[danrubel, 2017/08/17 12:51:55]

Good point. Done.

     }
   }
 
   @override
   analyzer.Parser get parser => _parserProxy;
 
   @override
   bool get usingFastaParser => true;
 
   @override
@@ skipping 694 matching lines @@
   @override
   @failingTest
   void test_parseDirectives_mixed() {
     // TODO(paulberry,ahe): This test verifies the analyzer parser's ability to
     // stop parsing as soon as the first non-directive is encountered; this is
     // useful for quickly traversing an import graph.  Consider adding a similar
     // ability to Fasta's parser.
     super.test_parseDirectives_mixed();
   }
 
-  @override
-  @failingTest
-  void test_parsePartOfDirective_name() {
-    // TODO(paulberry,ahe): Thes test verifies that even if URIs in "part of"
-    // declarations are enabled, a construct of the form "part of identifier;"
-    // is still properly handled.  URIs in "part of" declarations are not
-    // supported by Fasta yet.
-    super.test_parsePartOfDirective_name();
-  }
-
-  @override
-  @failingTest
-  void test_parsePartOfDirective_uri() {
-    // TODO(paulberry,ahe): URIs in "part of" declarations are not supported by
-    // Fasta.
-    super.test_parsePartOfDirective_uri();
-  }
-
   @failingTest
   void test_parseCompilationUnit_operatorAsPrefix_parameterized2() {
     // TODO(danrubel): should not be generating an error
     super.test_parseCompilationUnit_operatorAsPrefix_parameterized();
     assertNoErrors();
   }
 
   @failingTest
   void test_parseCompilationUnit_typedefAsPrefix2() {
     // TODO(danrubel): should not be generating an error
     super.test_parseCompilationUnit_typedefAsPrefix();
     assertNoErrors();
   }
 
   @failingTest
   void test_parseCompilationUnitMember_abstractAsPrefix2() {
     // TODO(danrubel): should not be generating an error
     super.test_parseCompilationUnitMember_abstractAsPrefix();
     assertNoErrors();
   }
 }