author Mike Hommey <>
Fri, 05 Apr 2019 02:30:56 +0000
changeset 468491 60669a841a87644ba9b2f4d9f17f225e2eca0980
parent 458301 79fae15dc460d6396fa67a9991d99cade2bf56cf
child 468816 7de34f2a331ca4867b2c66f39f23a8f37bc7d64f
permissions -rw-r--r--
Bug 1541792 - Replace linker magic with manual component registration. r=froydnj Before bug 938437, we had a rather large and error-prone nsStaticXULComponents.cpp used to register all modules. That was replaced with clever use of the linker, which allowed to avoid the mess that maintaining that file was. Fast forward to now, where after bug 1524687 and other work that preceded it, we have a much smaller number of remaining static xpcom components, registered via this linker hack, and don't expect to add any new ones. The list should eventually go down to zero. Within that context, it seems to be the right time to get rid of the magic, and with it the problems it causes on its own. Some of those components could probably be trivially be converted to static registration via .conf files, but I didn't want to deal with the possible need to increase the number of dummy modules in XPCOMInit.cpp. They can still be converted as a followup. Differential Revision:

# 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

from __future__ import absolute_import, unicode_literals

import sys

from mach.decorators import (

from mozbuild.base import MachCommandBase, MozbuildObject

class SearchProvider(object):
    @Command('dxr', category='misc',
             description='Search for something in DXR.')
    @CommandArgument('term', nargs='+', help='Term(s) to search for.')
    def dxr(self, term):
        import webbrowser
        term = ' '.join(term)
        uri = '' % term

    @Command('mdn', category='misc',
             description='Search for something on MDN.')
    @CommandArgument('term', nargs='+', help='Term(s) to search for.')
    def mdn(self, term):
        import webbrowser
        term = ' '.join(term)
        uri = '' % term

    @Command('google', category='misc',
             description='Search for something on Google.')
    @CommandArgument('term', nargs='+', help='Term(s) to search for.')
    def google(self, term):
        import webbrowser
        term = ' '.join(term)
        uri = '' % term

    @Command('search', category='misc',
             description='Search for something on the Internets. '
             'This will open 3 new browser tabs and search for the term on Google, '
             'MDN, and DXR.')
    @CommandArgument('term', nargs='+', help='Term(s) to search for.')
    def search(self, term):

class UUIDProvider(object):
    @Command('uuid', category='misc',
             description='Generate a uuid.')
    @CommandArgument('--format', '-f', choices=['idl', 'cpp', 'c++'],
                     help='Output format for the generated uuid.')
    def uuid(self, format=None):
        import uuid
        u = uuid.uuid4()
        if format in [None, 'idl']:
            if format is None:
        if format in [None, 'cpp', 'c++']:
            u = u.hex
            print('{ 0x%s, 0x%s, 0x%s, \\' % (u[0:8], u[8:12], u[12:16]))
            pairs = tuple(map(lambda n: u[n:n+2], range(16, 32, 2)))
            print(('  { ' + '0x%s, ' * 7 + '0x%s } }') % pairs)

def REMOVED(cls):
    """Command no longer exists!

    This functionality is no longer supported in mach.
    return False

class PastebinProvider(object):
    @Command('pastebin', category='misc', conditions=[REMOVED])
    def pastebin(self):

def mozregression_import():
    # Lazy loading of mozregression.
    # Note that only the mach_interface module should be used from this file.
        import mozregression.mach_interface
    except ImportError:
        return None
    return mozregression.mach_interface

def mozregression_create_parser():
    # Create the mozregression command line parser.
    # if mozregression is not installed, or not up to date, it will
    # first be installed.
    cmd = MozbuildObject.from_environment()
    mozregression = mozregression_import()
    if not mozregression:
        # mozregression is not here at all, install it
        print("mozregression was installed. please re-run your"
              " command. If you keep getting this message please "
              " manually run: 'pip install -U mozregression'.")
        # check if there is a new release available
        release = mozregression.new_release_on_pypi()
        if release:
            # there is one, so install it. Note that install_pip_package
            # does not work here, so just run pip directly.
                'mozregression==%s' % release
            print("mozregression was updated to version %s. please"
                  " re-run your command." % release)
            # mozregression is up to date, return the parser.
            return mozregression.parser()
    # exit if we updated or installed mozregression because
    # we may have already imported mozregression and running it
    # as this may cause issues.

class MozregressionCommand(MachCommandBase):
             description=("Regression range finder for nightly"
                          " and inbound builds."),
    def run(self, **options):
        mozregression = mozregression_import()