1 files changed, 52 insertions, 0 deletions
diff --git a/Tools/Scripts/webkitpy/common/net/regressionwindow.py b/Tools/Scripts/webkitpy/common/net/regressionwindow.py
new file mode 100644
index 0000000..3960ba2
--- /dev/null
+++ b/Tools/Scripts/webkitpy/common/net/regressionwindow.py
@@ -0,0 +1,52 @@
+# Copyright (C) 2010 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+# FIXME: This probably belongs in the buildbot module.
+class RegressionWindow(object):
+    def __init__(self, build_before_failure, failing_build, failing_tests=None):
+        self._build_before_failure = build_before_failure
+        self._failing_build = failing_build
+        self._failing_tests = failing_tests
+        self._revisions = None
+
+    def build_before_failure(self):
+        return self._build_before_failure
+
+    def failing_build(self):
+        return self._failing_build
+
+    def failing_tests(self):
+        return self._failing_tests
+
+    def revisions(self):
+        # Cache revisions to avoid excessive allocations.
+        if not self._revisions:
+            self._revisions = range(self._failing_build.revision(), self._build_before_failure.revision(), -1)
+            self._revisions.reverse()
+        return self._revisions