Turn off summaries in context when building summary from AST.

pkg/analyzer_cli/lib/src/build_mode.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_cli.src.build_mode;
 
 import 'dart:core' hide Resource;
 import 'dart:io' as io;
 
 import 'package:analyzer/dart/ast/ast.dart' show CompilationUnit;
@@ skipping 139 matching lines @@
       }
     }
     return maxSeverity;
   }
 
   void _createContext() {
     DirectoryBasedDartSdk sdk =
         new DirectoryBasedDartSdk(new JavaFile(options.dartSdkPath));
     sdk.analysisOptions =
         Driver.createAnalysisOptionsForCommandLineOptions(options);
-    sdk.useSummary = true;
+    sdk.useSummary = !options.buildSummaryOnlyAst;
 
     // Read the summaries.
     summaryDataStore = new SummaryDataStore(options.buildSummaryInputs);
 
     // In AST mode include SDK bundle to avoid parsing SDK sources.
     if (options.buildSummaryOnlyAst) {
       summaryDataStore.addBundle(null, sdk.getSummarySdkBundle());
     }
 
     // Create the context.
     context = AnalysisEngine.instance.createAnalysisContext();
     context.sourceFactory = new SourceFactory(<UriResolver>[
       new DartUriResolver(sdk),
       new InSummaryPackageUriResolver(summaryDataStore),
       new ExplicitSourceResolver(uriToFileMap)
     ]);
 
     // Set context options.
     Driver.setAnalysisContextOptions(context, options,
         (AnalysisOptionsImpl contextOptions) {
       if (options.buildSummaryOnlyDiet) {
         contextOptions.analyzeFunctionBodies = false;
       }
     });
 
-    // Configure using summaries.
-    context.typeProvider = sdk.context.typeProvider;
-    context.resultProvider =
-        new InputPackagesResultProvider(context, summaryDataStore);
+    if (!options.buildSummaryOnlyAst) {
+      // Configure using summaries.
+      context.typeProvider = sdk.context.typeProvider;
+      context.resultProvider =
+          new InputPackagesResultProvider(context, summaryDataStore);
+    }
   }
 
   /**
    * Print errors for all explicit sources.  If [outputPath] is supplied, output
    * is sent to a new file at that path.
    */
   void _printErrors({String outputPath}) {
     StringBuffer buffer = new StringBuffer();
     ErrorFormatter formatter = new ErrorFormatter(
         buffer,
@@ skipping 205 matching lines @@
     String msg = '';
     if (errorBuffer.isNotEmpty) {
       msg += errorBuffer.toString() + '\n';
     }
     if (outBuffer.isNotEmpty) {
       msg += outBuffer.toString() + '\n';
     }
     return msg;
   }
 }