66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
# Copyright (c) 2012 Paul Tagliamonte <paultag@debian.org>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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from hy.models.expression import HyExpression
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from hy.models.string import HyString
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from hy.models.dict import HyDict
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from hy.models.list import HyList
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_hy_macros = {}
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def macro(name):
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def _(fn):
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_hy_macros[name] = fn
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return fn
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return _
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def process(tree):
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if isinstance(tree, HyExpression):
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fn = tree[0]
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ntree = HyExpression([fn] + [process(x) for x in tree[1:]])
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if isinstance(fn, HyString):
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if fn in _hy_macros:
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m = _hy_macros[fn]
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obj = m(ntree)
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obj.replace(tree)
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return obj
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ntree.replace(tree)
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return ntree
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if isinstance(tree, HyDict):
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obj = HyDict({process(x): process(tree[x]) for x in tree})
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obj.replace(tree)
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return obj
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if isinstance(tree, HyList):
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obj = HyList([process(x) for x in tree]) # NOQA
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# flake8 thinks we're redefining from 52.
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obj.replace(tree)
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return obj
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if isinstance(tree, list):
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return [process(x) for x in tree]
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return tree
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