Add line starts into unlinked units.

pkg/analyzer/test/src/summary/summarize_ast_test.dart

 // Copyright (c) 2016, 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.test.src.summary.summarize_ast_test;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/source.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/summarize_ast.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';
@@ skipping 302 matching lines @@
           bundle.unlinkedUnits[i];
     }
   }
 
   /**
    * Add the given source file so that it may be referenced by the file under
    * test.
    */
   Source addNamedSource(String filePath, String contents) {
     CompilationUnit unit = _parseText(contents);
-    UnlinkedUnitBuilder unlinkedUnit = serializeAstUnlinked(unit);
+    List<int> lineStarts = StringUtilities.computeLineStarts(contents);
+    UnlinkedUnitBuilder unlinkedUnit = serializeAstUnlinked(unit, lineStarts);
     uriToUnit[absUri(filePath)] = unlinkedUnit;
     // Tests using SummaryLinkerTest don't actually need the returned
     // Source, so we can safely return `null`.
     return null;
   }
 
   LinkerInputs createLinkerInputs(String text, {String path: '/test.dart'}) {
     Uri testDartUri = Uri.parse(absUri(path));
     CompilationUnit unit = _parseText(text);
-    UnlinkedUnitBuilder unlinkedDefiningUnit = serializeAstUnlinked(unit);
+    List<int> lineStarts = StringUtilities.computeLineStarts(text);
+    UnlinkedUnitBuilder unlinkedDefiningUnit =
+        serializeAstUnlinked(unit, lineStarts);
     uriToUnit[testDartUri.toString()] = unlinkedDefiningUnit;
     LinkerInputs linkerInputs = new LinkerInputs(
         allowMissingFiles,
         uriToUnit,
         testDartUri,
         unlinkedDefiningUnit,
         _dependentLinkedLibraries,
         _dependentUnlinkedUnits);
     // Reset uriToUnit, _dependentLinkedLibraries, and _dependentUnlinkedUnits
     // in case the test needs to start a new package bundle.
@@ skipping 30 matching lines @@
   CompilationUnit _parseText(String text) {
     CharSequenceReader reader = new CharSequenceReader(text);
     Scanner scanner =
         new Scanner(null, reader, AnalysisErrorListener.NULL_LISTENER);
     Token token = scanner.tokenize();
     Parser parser = new Parser(null, AnalysisErrorListener.NULL_LISTENER);
     parser.parseGenericMethods = true;
     return parser.parseCompilationUnit(token);
   }
 }