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

tests/compiler/dart2js/memory_compiler.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.test.memory_compiler;
 
 import 'memory_source_file_helper.dart';
 
 import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart'
        show NullSink;
 
 import '../../../sdk/lib/_internal/compiler/compiler.dart'
-       show Diagnostic, DiagnosticHandler;
+       show Diagnostic, DiagnosticHandler, CompilerOutputProvider;
 
 import 'dart:async';
 
 import '../../../sdk/lib/_internal/compiler/implementation/mirrors/source_mirrors.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/mirrors/analyze.dart';
 
 class DiagnosticMessage {
   final Uri uri;
   final int begin;
   final int end;
@@ skipping 28 matching lines @@
 
   Iterable<DiagnosticMessage> get hints {
     return filterMessagesByKind(Diagnostic.HINT);
   }
 
   Iterable<DiagnosticMessage> get infos {
     return filterMessagesByKind(Diagnostic.INFO);
   }
 }
 
+class BufferedEventSink implements EventSink<String> {
+  StringBuffer sb = new StringBuffer();
+  String text;
+
+  void add(String event) {
+    sb.write(event);
+  }
+
+  void addError(errorEvent, [StackTrace stackTrace]) {
+    // Do not support this.
+  }
+
+  void close() {
+    text = sb.toString();
+    sb = null;
+  }
+}
+
+class OutputCollector {
+  Map<String, Map<String, BufferedEventSink>> outputMap = {};
+
+  EventSink<String> call(String name, String extension) {
+    Map<String, BufferedEventSink> sinkMap =
+        outputMap.putIfAbsent(extension, () => {});
+    return sinkMap.putIfAbsent(name, () => new BufferedEventSink());
+  }
+
+  String getOutput(String name, String extension) {
+    Map<String, BufferedEventSink> sinkMap = outputMap[extension];
+    if (sinkMap == null) return null;
+    BufferedEventSink sink = sinkMap[name];
+    return sink != null ? sink.text : null;
+  }
+}
+
 DiagnosticHandler createDiagnosticHandler(DiagnosticHandler diagnosticHandler,
                                           SourceFileProvider provider,
                                           bool showDiagnostics) {
   var handler = diagnosticHandler;
   if (showDiagnostics) {
     if (diagnosticHandler == null) {
       handler = new FormattingDiagnosticHandler(provider);
     } else {
       var formattingHandler = new FormattingDiagnosticHandler(provider);
       handler = (Uri uri, int begin, int end, String message, Diagnostic kind) {
         diagnosticHandler(uri, begin, end, message, kind);
         formattingHandler(uri, begin, end, message, kind);
       };
     }
   } else if (diagnosticHandler == null) {
     handler = (Uri uri, int begin, int end, String message, Diagnostic kind) {};
   }
   return handler;
 }
 
 Expando<MemorySourceFileProvider> expando =
     new Expando<MemorySourceFileProvider>();
 
 Compiler compilerFor(Map<String,String> memorySourceFiles,
                      {DiagnosticHandler diagnosticHandler,
+                      CompilerOutputProvider outputProvider,
                       List<String> options: const [],
                       Compiler cachedCompiler,
                       bool showDiagnostics: true,
                       Uri packageRoot}) {
   Uri libraryRoot = Uri.base.resolve('sdk/');
   Uri script = Uri.base.resolveUri(Platform.script);
   if (packageRoot == null) {
     packageRoot = Uri.base.resolve('${Platform.packageRoot}/');
   }
 
   MemorySourceFileProvider provider;
   var readStringFromUri;
   if (cachedCompiler == null) {
     provider = new MemorySourceFileProvider(memorySourceFiles);
     readStringFromUri = provider.readStringFromUri;
     // Saving the provider in case we need it later for a cached compiler.
     expando[readStringFromUri] = provider;
   } else {
     // When using a cached compiler, it has read a number of files from disk
     // already (and will not attemp to read them again due to caching). These
     // files must be available to the new diagnostic handler.
     provider = expando[cachedCompiler.provider];
     readStringFromUri = cachedCompiler.provider;
     provider.memorySourceFiles = memorySourceFiles;
   }
   var handler =
       createDiagnosticHandler(diagnosticHandler, provider, showDiagnostics);
 
-  EventSink<String> outputProvider(String name, String extension) {
+  EventSink<String> noOutputProvider(String name, String extension) {
     if (name != '') throw 'Attempt to output file "$name.$extension"';
     return new NullSink('$name.$extension');
   }
+  if (outputProvider == null) {
+    outputProvider = noOutputProvider;
+  }
 
   Compiler compiler = new Compiler(readStringFromUri,
                                    outputProvider,
                                    handler,
                                    libraryRoot,
                                    packageRoot,
                                    options,
                                    {});
   if (cachedCompiler != null) {
     compiler.coreLibrary = cachedCompiler.libraries['dart:core'];
@@ skipping 42 matching lines @@
       createDiagnosticHandler(diagnosticHandler, provider, showDiagnostics);
 
   List<Uri> libraries = <Uri>[];
   memorySourceFiles.forEach((String path, _) {
     libraries.add(new Uri(scheme: 'memory', path: path));
   });
 
   return analyze(libraries, libraryRoot, packageRoot,
                  provider, handler, options);
 }