Add line starts into unlinked units.

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;
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/link.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/summary/summarize_ast.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
 import 'package:analyzer/src/summary/summary_sdk.dart' show SummaryBasedDartSdk;
 import 'package:analyzer/task/dart.dart';
+import 'package:analyzer/task/general.dart';
 import 'package:analyzer_cli/src/analyzer_impl.dart';
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:analyzer_cli/src/error_formatter.dart';
 import 'package:analyzer_cli/src/options.dart';
 import 'package:bazel_worker/bazel_worker.dart';
 
 /**
  * Persistent Bazel worker.
  */
 class AnalyzerWorkerLoop extends SyncWorkerLoop {
@@ skipping 313 matching lines @@
       // Parse the source and serialize its AST.
       Uri uri = Uri.parse(absoluteUri);
       Source source = context.sourceFactory.forUri2(uri);
       if (!source.exists()) {
         // TODO(paulberry): we should report a warning/error because DDC
         // compilations are unlikely to work.
         return null;
       }
       return uriToUnit.putIfAbsent(uri, () {
         CompilationUnit unit = context.computeResult(source, PARSED_UNIT);
-        UnlinkedUnitBuilder unlinkedUnit = serializeAstUnlinked(unit);
+        LineInfo lineInfo = context.computeResult(source, LINE_INFO);
+        UnlinkedUnitBuilder unlinkedUnit =
+            serializeAstUnlinked(unit, lineInfo.lineStarts);
         assembler.addUnlinkedUnit(source, unlinkedUnit);
         return unlinkedUnit;
       });
     }
 
     Map<String, LinkedLibraryBuilder> linkResult =
         link(sourceUris, _getDependency, _getUnit, options.strongMode);
     linkResult.forEach(assembler.addLinkedLibrary);
   }
 
@@ skipping 12 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;
   }
 }