Error reporting on File in dart:io

runtime/bin/file.h

Index: runtime/bin/file.h
diff --git a/runtime/bin/file.h b/runtime/bin/file.h
index 0fdc398640235f500997b2283d2e12f51313be74..42507559470038c6f00caf51940c4cb6fdfb7094 100644
--- a/runtime/bin/file.h
+++ b/runtime/bin/file.h
@@ -25,6 +25,12 @@ typedef unsigned __int8 uint8_t;
 // Forward declaration.
 class FileHandle;
 
+class OSError {

[Mads Ager (google), 2012/03/08 15:04:27]

We should move this to some place more general.

[Søren Gjesse, 2012/03/08 22:50:53]

Moved to utils.h, but maybe we should have platform.h in bin as well.

+ public:
+  int errno_;
+  char* strerror_;
+};
+
 class File {
  public:
   enum FileOpenMode {
@@ -111,7 +117,9 @@ class File {
   // reading and writing. If mode contains kWrite and the file does
   // not exist the file is created. The file is truncated to length 0 if
   // mode contains kTruncate.
-  static File* Open(const char* name, FileOpenMode mode);
+  static File* Open(const char* name,
+                    FileOpenMode mode,
+                    OSError* os_error = NULL);
 
   // Create a file object for the specified stdio file descriptor
   // (stdin, stout or stderr).