Remove public dart:isolate dependency from dart:developer

sdk/lib/developer/extension.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.
 
 part of dart.developer;
 
 class ServiceExtensionResponse {
   final String _result;
   final int _errorCode;
   final String _errorDetail;
@@ skipping 94 matching lines @@
   _registerExtension(method, handler);
 }
 
 // Both of these functions are written inside C++ to avoid updating the data
 // structures in Dart, getting an OOB, and observing stale state. Do not move
 // these into Dart code unless you can ensure that the operations will can be
 // done atomically. Native code lives in vm/isolate.cc-
 // LookupServiceExtensionHandler and RegisterServiceExtensionHandler.
 external ServiceExtensionHandler _lookupExtension(String method);
 external _registerExtension(String method, ServiceExtensionHandler handler);
-
-// This code is only invoked when there is no other Dart code on the stack.
-_runExtension(ServiceExtensionHandler handler,
-              String method,
-              List<String> parameterKeys,
-              List<String> parameterValues,
-              SendPort replyPort,
-              Object id) {
-  var parameters = {};
-  for (var i = 0; i < parameterKeys.length; i++) {
-    parameters[parameterKeys[i]] = parameterValues[i];
-  }
-  var response;
-  try {
-    response = handler(method, parameters);
-  } catch (e, st) {
-    var errorDetails = (st == null) ? '$e' : '$e\n$st';
-    response = new ServiceExtensionResponse.error(
-        ServiceExtensionResponse.kExtensionError,
-        errorDetails);
-    _postResponse(replyPort, id, response);
-    return;
-  }
-  if (response is! Future) {
-    response = new ServiceExtensionResponse.error(
-          ServiceExtensionResponse.kExtensionError,
-          "Extension handler must return a Future");
-    _postResponse(replyPort, id, response);
-    return;
-  }
-  response.catchError((e, st) {
-    // Catch any errors eagerly and wrap them in a ServiceExtensionResponse.
-    var errorDetails = (st == null) ? '$e' : '$e\n$st';
-    return new ServiceExtensionResponse.error(
-        ServiceExtensionResponse.kExtensionError,
-        errorDetails);
-  }).then((response) {
-    // Post the valid response or the wrapped error after verifying that
-    // the response is a ServiceExtensionResponse.
-    if (response is! ServiceExtensionResponse) {
-      response = new ServiceExtensionResponse.error(
-          ServiceExtensionResponse.kExtensionError,
-          "Extension handler must complete to a ServiceExtensionResponse");
-    }
-    _postResponse(replyPort, id, response);
-  }).catchError((e, st) {
-    // We do not expect any errors to occur in the .then or .catchError blocks
-    // but, suppress them just in case.
-  });
-}
-
-// This code is only invoked by _runExtension.
-_postResponse(SendPort replyPort,
-              Object id,
-              ServiceExtensionResponse response) {
-  assert(replyPort != null);
-  if (id == null) {
-    // No id -> no response.
-    replyPort.send(null);
-    return;
-  }
-  assert(id != null);
-  StringBuffer sb = new StringBuffer();
-  sb.write('{"jsonrpc":"2.0",');
-  if (response._isError()) {
-    sb.write('"error":');
-  } else {
-    sb.write('"result":');
-  }
-  sb.write('${response._toString()},');
-  if (id is String) {
-    sb.write('"id":"$id"}');
-  } else {
-    sb.write('"id":$id}');
-  }
-  replyPort.send(sb.toString());
-}