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"""Support for plugins."""
import sys
from coverage.misc import CoverageException
class Plugins(object):
"""The currently loaded collection of coverage.py plugins."""
def __init__(self):
self.order = []
self.names = {}
@classmethod
def load_plugins(cls, modules, config):
"""Load plugins from `modules`.
Returns a list of loaded and configured plugins.
"""
plugins = cls()
for module in modules:
__import__(module)
mod = sys.modules[module]
plugin_class = getattr(mod, "Plugin", None)
if not plugin_class:
raise CoverageException("Plugin module %r didn't define a Plugin class" % module)
options = config.get_plugin_options(module)
plugin = plugin_class(options)
plugin._coverage_plugin_name = module
plugin._coverage_enabled = True
plugins.order.append(plugin)
plugins.names[module] = plugin
return plugins
def __nonzero__(self):
return bool(self.order)
__bool__ = __nonzero__
def __iter__(self):
return iter(self.order)
def get(self, plugin_name):
"""Return a plugin by name."""
return self.names[plugin_name]
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