Add option "--build-summary-output-semantic" to analyzer_cli.

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 166 matching lines @@
       while (true) {
         AnalysisResult analysisResult = context.performAnalysisTask();
         if (!analysisResult.hasMoreWork) {
           break;
         }
       }
     }
 
     // Write summary.
     assembler = new PackageBundleAssembler(
-        excludeHashes: options.buildSummaryExcludeInformative);
-    if (options.buildSummaryOutput != null) {
+        excludeHashes: options.buildSummaryExcludeInformative &&
+            options.buildSummaryOutputSemantic == null);
+    if (options.buildSummaryOutput != null ||
+        options.buildSummaryOutputSemantic != null) {
       if (options.buildSummaryOnlyAst && !options.buildSummaryFallback) {
         _serializeAstBasedSummary(explicitSources);
       } else {
         for (Source source in explicitSources) {
           if (context.computeKindOf(source) == SourceKind.LIBRARY) {
             if (options.buildSummaryFallback) {
               assembler.addFallbackLibrary(source);
             } else {
               LibraryElement libraryElement =
                   context.computeLibraryElement(source);
               assembler.serializeLibraryElement(libraryElement);
             }
           }
           if (options.buildSummaryFallback) {
             assembler.addFallbackUnit(source);
           }
         }
       }
       // Write the whole package bundle.
       PackageBundleBuilder sdkBundle = assembler.assemble();
       if (options.buildSummaryExcludeInformative) {
         sdkBundle.flushInformative();
       }
-      io.File file = new io.File(options.buildSummaryOutput);
-      file.writeAsBytesSync(sdkBundle.toBuffer(), mode: io.FileMode.WRITE_ONLY);
+      if (options.buildSummaryOutput != null) {
+        io.File file = new io.File(options.buildSummaryOutput);
+        file.writeAsBytesSync(sdkBundle.toBuffer(),
+            mode: io.FileMode.WRITE_ONLY);
+      }
+      if (options.buildSummaryOutputSemantic != null) {
+        sdkBundle.flushInformative();
+        io.File file = new io.File(options.buildSummaryOutputSemantic);
+        file.writeAsBytesSync(sdkBundle.toBuffer(),
+            mode: io.FileMode.WRITE_ONLY);
+      }
     }
 
     if (options.buildSummaryOnly) {
       return ErrorSeverity.NONE;
     } else {
       // Process errors.
       _printErrors(outputPath: options.buildAnalysisOutput);
       return _computeMaxSeverity();
     }
   }
@@ skipping 147 matching lines @@
             'Illegal input file (must be "\$uri|\$path"): $sourceFile');
         return null;
       }
       Uri uri = Uri.parse(sourceFile.substring(0, pipeIndex));
       String path = sourceFile.substring(pipeIndex + 1);
       uriToFileMap[uri] = new JavaFile(path);
     }
     return uriToFileMap;
   }
 }