chore: import upstream snapshot with attribution

python/paddle/jit/dy2static/ast_utils.py

@@ -0,0 +1,33 @@
+# Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import ast
+
+from paddle.utils import gast
+
+
+def ast_to_source_code(ast_node):
+    """
+    Transforms ast node into source code.
+    """
+    if not isinstance(ast_node, (gast.AST, ast.AST)):
+        raise TypeError(
+            f"Type of ast_root should be gast.AST or ast.AST, but received {type(ast_node)}."
+        )
+    if isinstance(ast_node, gast.AST):
+        ast_node = gast.gast_to_ast(ast_node)
+
+    ast.fix_missing_locations(ast_node)
+    return ast.unparse(ast_node)