Use '--source-map' and '--out' options to support source maps from non-commandline.

sdk/lib/_internal/compiler/implementation/dart2js.dart

 // Copyright (c) 2013, 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 dart2js.cmdline;
 
 import 'dart:async'
     show Future, EventSink;
 import 'dart:io'
     show exit, File, FileMode, Platform, RandomAccessFile, FileSystemException;
@@ skipping 303 matching lines @@
   if (arguments.length > 1) {
     var extra = arguments.sublist(1);
     helpAndFail('Error: Extra arguments: ${extra.join(" ")}');
   }
 
   Uri uri = currentDirectory.resolve(arguments[0]);
   if (packageRoot == null) {
     packageRoot = uri.resolve('./packages/');
   }
 
-  diagnosticHandler.info('package root is $packageRoot');
+  diagnosticHandler.info('Package root is $packageRoot');
 
   int totalCharactersWritten = 0;
 
+  options.add('--out=$out');
   options.add('--source-map=$sourceMapOut');
 
   List<String> allOutputFiles = new List<String>();
 
   compilationDone(String code) {
     if (analyzeOnly) return;
     if (code == null) {
       fail('Error: Compilation failed.');
     }
     writeString(Uri.parse('$out.deps'),
                 getDepsOutput(inputProvider.sourceFiles));
     diagnosticHandler.info(
-         'compiled ${inputProvider.dartCharactersRead} characters Dart '
+         'Compiled ${inputProvider.dartCharactersRead} characters Dart '
          '-> $totalCharactersWritten characters $outputLanguage '
          'in ${relativize(currentDirectory, out, isWindows)}');
     if (diagnosticHandler.verbose) {
       String input = uriPathToNative(arguments[0]);
       print('Dart file ($input) compiled to $outputLanguage.');
       print('Wrote the following files:');
       for (String filename in allOutputFiles) {
         print("  $filename");
       }
     } else if (!explicitOut) {
@@ skipping 52 matching lines @@
       int offset = 0;
       while (offset < data.length) {
         output.writeStringSync(
             data.substring(offset, math.min(offset + chunkSize, data.length)));
         offset += chunkSize;
       }
       charactersWritten += data.length;
     }
 
     onDone() {
-      if (sourceMapFileName != null) {
-        // Using # is the new proposed standard. @ caused problems in Internet
-        // Explorer due to "Conditional Compilation Statements" in JScript,
-        // see:
-        // http://msdn.microsoft.com/en-us/library/7kx09ct1(v=vs.80).aspx
-        // About source maps, see:
-        // https://docs.google.com/a/google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
-        // TODO(http://dartbug.com/11914): Remove @ line.
-        String sourceMapTag = '''
-
-//# sourceMappingURL=$sourceMapFileName
-//@ sourceMappingURL=$sourceMapFileName
-''';
-        writeStringSync(sourceMapTag);
-      }
       output.closeSync();
       if (isPrimaryOutput) {
         totalCharactersWritten += charactersWritten;
       }
     }
 
     return new EventSinkWrapper(writeStringSync, onDone);
   }
 
   return compileFunc(uri, libraryRoot, packageRoot,
@@ skipping 204 matching lines @@
     }
   }
 
   try {
     return compilerMain(arguments).catchError(onError);
   } catch (exception, trace) {
     onError(exception, trace);
     return new Future.value();
   }
 }