api.py

# Copyright 2024 Google LLC
#
# 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 __future__ import annotations

from typing import TYPE_CHECKING

if TYPE_CHECKING:
    import bigframes.core.nodes


def test_only_ibis_inferred_schema(node: bigframes.core.nodes.BigFrameNode):
    """Use only for testing paths to ensure ibis inferred schema does not diverge from bigframes inferred schema."""
    from bigframes.core.compile.ibis_compiler import ibis_compiler
    import bigframes.core.rewrite
    import bigframes.core.schema

    node = ibis_compiler._replace_unsupported_ops(node)
    node = bigframes.core.rewrite.bake_order(node)
    ir = ibis_compiler.compile_node(node)
    items = tuple(
        bigframes.core.schema.SchemaItem(name, ir.get_column_type(ibis_id))
        for name, ibis_id in zip(node.schema.names, ir.column_ids)
    )
    return bigframes.core.schema.ArraySchema(items)