- Implement .packages specification.

runtime/bin/isolate_data.h

 // Copyright (c) 2012, 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.
 
 #ifndef BIN_ISOLATE_DATA_H_
 #define BIN_ISOLATE_DATA_H_
 
 #include "include/dart_api.h"
+#include "platform/assert.h"
 #include "platform/globals.h"
 
 
 namespace dart {
 namespace bin {
 
 // Forward declaration.
 class EventHandler;
 
 // Data associated with every isolate in the standalone VM
 // embedding. This is used to free external resources for each isolate
 // when the isolate shuts down.
 class IsolateData {
  public:
-  explicit IsolateData(const char* url, const char* package_root)
+  explicit IsolateData(const char* url,
+                       const char* package_root,
+                       const char* packages_file)
       : script_url(strdup(url)),
         package_root(NULL),
+        packages_file(NULL),
         udp_receive_buffer(NULL),
         load_async_id(-1) {
     if (package_root != NULL) {
+      ASSERT(packages_file == NULL);
       this->package_root = strdup(package_root);
+    } else if (packages_file != NULL) {
+      this->packages_file = strdup(packages_file);
     }
   }
   ~IsolateData() {
     free(script_url);
     free(package_root);
+    free(packages_file);
     free(udp_receive_buffer);
   }
 
   char* script_url;
   char* package_root;
+  char* packages_file;
   uint8_t* udp_receive_buffer;
   int64_t load_async_id;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IsolateData);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_ISOLATE_DATA_H_