Add an analyzer method to flush resolved ASTs (for testing).

pkg/analyzer/lib/src/context/context.dart

 // Copyright (c) 2015, 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.src.context.context;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/instrumentation/instrumentation.dart';
@@ skipping 1168 matching lines @@
     if (source.isInSystemLibrary) {
       return _options.generateSdkErrors;
     } else if (!entry.explicitlyAdded) {
       return _options.generateImplicitErrors;
     } else {
       return true;
     }
   }
 
   @override
+  void test_flushResolvedUnit(Source source) {

[Brian Wilkerson, 2015/06/24 16:56:58]

The non-task-model version of this method flushes all AST structures, but this
misses PARSED_UNIT. Not sure which is the intended behavior.

[Paul Berry, 2015/06/24 20:08:31]

Ok, as per our discussion, I've renamed this to test_flushAstStructures and made
it flush PARSED_UNIT as well.

+    CacheEntry entry = getCacheEntry(source);
+    entry.setState(RESOLVED_UNIT1, CacheState.FLUSHED);
+    entry.setState(RESOLVED_UNIT2, CacheState.FLUSHED);
+    entry.setState(RESOLVED_UNIT4, CacheState.FLUSHED);
+    entry.setState(RESOLVED_UNIT5, CacheState.FLUSHED);
+    entry.setState(RESOLVED_UNIT6, CacheState.FLUSHED);
+    entry.setState(RESOLVED_UNIT, CacheState.FLUSHED);
+  }
+
+  @override
   bool validateCacheConsistency() {
     int consistencyCheckStart = JavaSystem.nanoTime();
     HashSet<Source> changedSources = new HashSet<Source>();
     HashSet<Source> missingSources = new HashSet<Source>();
     for (Source source in _cache.sources) {
       CacheEntry entry = _cache.get(source);
       int sourceTime = getModificationStamp(source);
       if (sourceTime != entry.modificationTime) {
         changedSources.add(source);
       }
@@ skipping 804 matching lines @@
         new PendingFuture<T>(_context, target, computeValue);
     if (!pendingFuture.evaluate(entry)) {
       _context._pendingFutureTargets
           .putIfAbsent(target, () => <PendingFuture>[])
           .add(pendingFuture);
       scheduleComputation();
     }
     return pendingFuture.future;
   }
 }