Error reporting on File in dart:io

runtime/bin/utils.h

Index: runtime/bin/utils.h
diff --git a/runtime/bin/utils.h b/runtime/bin/utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..0ae0fae3da0fa1d09bee4739fd7c867c207dfb22
--- /dev/null
+++ b/runtime/bin/utils.h
@@ -0,0 +1,26 @@
+// 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_UTILS_H_
+#define BIN_UTILS_H_
+
+class OSError {
+ public:
+  OSError() : code_(0), message_(NULL) {}
+  virtual ~OSError() { free(message_); }
+
+  int code() { return code_; }
+  void set_code(int code) { code_ = code; }
+  char* message() { return message_; }
+  void SetMessage(char* message) { message_ = strdup(message); }

[Mads Ager (google), 2012/03/09 09:40:13]

Let's add an ASSERT(message_ == NULL) here to guard against memory leaks caused
by repeated SetMessage calls?

[Søren Gjesse, 2012/03/13 08:25:55]

Added freeing of message_ instead.

+
+ private:
+  int code_;
+  char* message_;
+
+  DISALLOW_COPY_AND_ASSIGN(OSError);
+};
+
+
+#endif  // BIN_UTILS_H_