Disable formatting and add new-lines to make tests faster.

lib/src/codegen/dart_codegen.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 ddc.src.codegen.dart_codegen;
 
 import 'dart:io' show File;
 
 import 'package:analyzer/analyzer.dart' as analyzer;
 import 'package:analyzer/src/generated/ast.dart';
@@ skipping 49 matching lines @@
     var args = oper.arguments;
     return AstBuilder.application(id, args);
   }
 }
 
 // TODO(leafp) This is kind of a hack, but it works for now.
 class FileWriter extends java_core.PrintStringWriter {
   bool _format;
   String _path;
   FileWriter(this._format, this._path);
+  int indent = 0;
+
+  void print(x) {
+    if (_format) {
+      super.print(x);
+      return;
+    }
+
+    if (x == '{') {

[Siggi Cherem (dart-lang), 2015/02/26 21:03:49]

turns out that the ToStringVIsitor class calls print with individual symbols (;,
{, and }), so this is sufficient for the purpose of testing the output of the
core libraries.

[Leaf, 2015/02/26 21:42:14]

Won't this break things?  For example, printing a string interpolation seems to
call print with a single '}' to terminate the interpolation, but we don't want
to add a new line in the middle of the string, right?

[Jennifer Messerly, 2015/02/26 23:49:50]

yeah, +1 on changing the visitor ... IMO it shouldn't be very hard, I found
analyzer's printer code to be very straightforward. I mean worst case, you could
copy+paste it and add newlines at strategic locations. But maybe I've been
working with js_ast's Printer too much lately. :)

+      indent++;
+      x = '{\n${"  " * indent}';
+    } else if (x == ';') {
+      x = ';\n${"  " * indent}';
+    } else if (x == '}') {
+      indent--;
+      x = '}\n${"  " * indent}';
+    }
+    super.print(x);
+  }
 
   void finalize() {
     String s = toString();
     if (_format) {
       DartFormatter d = new DartFormatter();
       try {
         _log.fine("Formatting file $_path ");
         s = d.format(s, uri: _path);
       } catch (e) {
         _log.severe("Failed to format $_path: " + e.toString());
@@ skipping 367 matching lines @@
   void generateUnit(CompilationUnit unit, LibraryInfo info, String libraryDir) {
     var uri = unit.element.source.uri;
     _log.fine("Emitting original unit " + uri.toString());
     FileWriter out = new FileWriter(
         _format, path.join(libraryDir, '${uri.pathSegments.last}'));
     var unitGen = new EmptyUnitGenerator(unit, out);
     unitGen.generate();
     out.finalize();
   }
 }