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53b7bc583c
This requires moving the schema utilities to their own util module. MozReview-Commit-ID: KR5xSJ9ak5Y --HG-- extra : rebase_source : 1c1f6bfb6a08deb8c0be4b2b58db02d85aafeb89
55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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from __future__ import absolute_import, print_function, unicode_literals
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class TransformConfig(object):
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"""A container for configuration affecting transforms. The `config`
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argument to transforms is an instance of this class, possibly with
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additional kind-specific attributes beyond those set here."""
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def __init__(self, kind, path, config, params):
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# the name of the current kind
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self.kind = kind
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# the path to the kind configuration directory
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self.path = path
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# the parsed contents of kind.yml
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self.config = config
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# the parameters for this task-graph generation run
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self.params = params
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class TransformSequence(object):
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"""
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Container for a sequence of transforms. Each transform is represented as a
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callable taking (config, items) and returning a generator which will yield
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transformed items. The resulting sequence has the same interface.
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This is convenient to use in a file full of transforms, as it provides a
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decorator, @transforms.add, that will add the decorated function to the
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sequence.
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"""
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def __init__(self, transforms=None):
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self.transforms = transforms or []
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def __call__(self, config, items):
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for xform in self.transforms:
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items = xform(config, items)
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if items is None:
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raise Exception("Transform {} is not a generator".format(xform))
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return items
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def __repr__(self):
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return '\n'.join(
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['TransformSequence(['] +
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[repr(x) for x in self.transforms] +
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['])'])
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def add(self, func):
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self.transforms.append(func)
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return func
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