author Nathan Froyd <>
Fri, 24 Aug 2012 15:54:55 -0400
changeset 108798 b4316e1c474d14ddfa6e9e03575e801cdeae006b
child 109963 01b657335f1d9dd3ecd369a993f105e5540d7633
permissions -rw-r--r--
Bug 781531 - generate histogram information from JSON; r=taras

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at

# Write out a C++ enum definition whose members are the names of
# histograms.  The histograms are defined in a file provided as a
# command-line argument.

from __future__ import with_statement

import sys
import histogram_tools

banner = """/* This file is auto-generated, see  */

def main(argv):
    filename = argv[0]

    print banner
    print "enum ID {"
    for (name, definition) in histogram_tools.from_file(filename):
        cpp_guard = definition.get('cpp_guard')
        if cpp_guard:
            print "#if defined(%s)" % cpp_guard
        print "  %s," % (name,)
        if cpp_guard:
            print "#endif"
    print "  HistogramCount"
    print "};"