wehub-resource-sync
45 lines
1.4 KiB
Python
45 lines
1.4 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.jit.dy2static.utils import ast_to_source_code
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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 CastTransformer(BaseTransformer):
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"""
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This class transforms type casting into Static Graph Ast.
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"""
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def __init__(self, root):
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self.root = root
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self._castable_type = {'bool', 'int', 'float', 'complex'}
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def transform(self):
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self.visit(self.root)
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def visit_Call(self, node):
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self.generic_visit(node)
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func_str = ast_to_source_code(node.func).strip()
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if func_str in self._castable_type and len(node.args) > 0:
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args_str = ast_to_source_code(node.args[0]).strip()
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new_func_str = f"_jst.AsDtype({args_str}, '{func_str}')"
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new_node = gast.parse(new_func_str).body[0].value
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return new_node
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return node
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