1 files changed, 48 insertions, 0 deletions
diff --git a/chromium/third_party/catapult/tracing/tracing/mre/mre_result.py b/chromium/third_party/catapult/tracing/tracing/mre/mre_result.py
new file mode 100644
index 00000000000..f3d128e23a8
--- /dev/null
+++ b/chromium/third_party/catapult/tracing/tracing/mre/mre_result.py
@@ -0,0 +1,48 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from tracing.mre import failure as failure_module
+
+class DuplicateKeyError(Exception):
+  """Raised if an attempt is made to set a key more than once."""
+
+
+class MreResult(object):
+
+  def __init__(self, failures=None, pairs=None):
+    if failures is None:
+      failures = []
+    if pairs is None:
+      pairs = {}
+    self._failures = failures
+    self._pairs = pairs
+
+  @property
+  def failures(self):
+    return self._failures
+
+  @property
+  def pairs(self):
+    return self._pairs
+
+  def AsDict(self):
+    d = {
+        'pairs': self._pairs
+    }
+
+    if self.failures:
+      d['failures'] = [failure.AsDict() for failure in self._failures]
+
+    return d
+
+  def AddFailure(self, failure):
+    if not isinstance(failure, failure_module.Failure):
+      raise ValueError('Attempted to add %s as Failure', failure)
+
+    self._failures.append(failure)
+
+  def AddPair(self, key, value):
+    if key in self._pairs:
+      raise DuplicateKeyError('Key ' + key + 'already exists in result.')
+    self._pairs[key] = value