wehub-resource-sync
61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from paddle.utils import gast
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from .base import BaseTransformer
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__all__ = []
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class SuperTransformer(BaseTransformer):
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"""
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This class transforms super() into super(__class__, <first argument>).
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"""
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def __init__(self, root):
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self.root = root
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self.first_arg = None
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def transform(self):
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self.visit(self.root)
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def visit_FunctionDef(self, node):
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if self.first_arg is not None:
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return self.generic_visit(node)
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positional_args = node.args.posonlyargs + node.args.args
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if not positional_args:
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return self.generic_visit(node)
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self.first_arg = positional_args[0].id
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return self.generic_visit(node)
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def visit_Call(self, node):
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# super() -> _jst.WrapSuper(super)(x.__class__, x)
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self.generic_visit(node)
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if self.first_arg is None:
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return node
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if not isinstance(node.func, gast.Name):
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return node
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if node.func.id != "super":
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return node
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if node.args:
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return node
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new_fn_call_str = f"_jst.WrapSuper(super)({self.first_arg}.__class__, {self.first_arg})"
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new_fn_call_ast = gast.parse(new_fn_call_str).body[0]
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return new_fn_call_ast
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