chore: import upstream snapshot with attribution

python/paddle/jit/dy2static/transformers/assert_transformer.py

@@ -0,0 +1,46 @@
+#   Copyright (c) 2020 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.
+
+from paddle.jit.dy2static.utils import ast_to_source_code
+from paddle.utils import gast
+
+from .base import BaseTransformer
+
+__all__ = []
+
+
+class AssertTransformer(BaseTransformer):
+    """
+    A class transforms python assert to convert_assert.
+    """
+
+    def __init__(self, root):
+        self.root = root
+
+    def transform(self):
+        self.visit(self.root)
+
+    def visit_Assert(self, node):
+        convert_assert_node = (
+            gast.parse(
+                '_jst.Assert({test}, {msg})'.format(
+                    test=ast_to_source_code(node.test),
+                    msg=ast_to_source_code(node.msg) if node.msg else "",
+                )
+            )
+            .body[0]
+            .value
+        )
+
+        return gast.Expr(value=convert_assert_node)