## Coverage Report

#### Created: 2025-11-22 06:00

next uncovered line (L), next uncovered region (R), next uncovered branch (B)

    /Users/andrewlamb/Software/datafusion/datafusion/functions/src/planner.rs

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    // Licensed to the Apache Software Foundation (ASF) under one
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    // or more contributor license agreements.  See the NOTICE file
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    // distributed with this work for additional information
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    // regarding copyright ownership.  The ASF licenses this file
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    // to you under the Apache License, Version 2.0 (the
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    // "License"); you may not use this file except in compliance
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    // with the License.  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,
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    // software distributed under the License is distributed on an
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    // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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    // KIND, either express or implied.  See the License for the
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    // specific language governing permissions and limitations
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    // under the License.
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    //! SQL planning extensions like [`UserDefinedFunctionPlanner`]
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    use datafusion_common::Result;
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    use datafusion_expr::{
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        expr::ScalarFunction,
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        planner::{ExprPlanner, PlannerResult},
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        Expr,
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    };
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    #[deprecated(
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        since = "50.0.0",
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        note = "Use UnicodeFunctionPlanner and DateTimeFunctionPlanner instead"
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    )]
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    #[derive(Default, Debug)]
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    pub struct UserDefinedFunctionPlanner;
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    #[expect(deprecated)]
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    impl ExprPlanner for UserDefinedFunctionPlanner {
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        #[cfg(feature = "datetime_expressions")]
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        fn plan_extract(&self, args: Vec<Expr>) -> Result<PlannerResult<Vec<Expr>>> {
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            Ok(PlannerResult::Planned(Expr::ScalarFunction(
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                ScalarFunction::new_udf(crate::datetime::date_part(), args),
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            )))
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        }
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        #[cfg(feature = "unicode_expressions")]
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        fn plan_position(&self, args: Vec<Expr>) -> Result<PlannerResult<Vec<Expr>>> {
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            Ok(PlannerResult::Planned(Expr::ScalarFunction(
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                ScalarFunction::new_udf(crate::unicode::strpos(), args),
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            )))
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        }
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        #[cfg(feature = "unicode_expressions")]
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        fn plan_substring(&self, args: Vec<Expr>) -> Result<PlannerResult<Vec<Expr>>> {
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            Ok(PlannerResult::Planned(Expr::ScalarFunction(
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                ScalarFunction::new_udf(crate::unicode::substr(), args),
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            )))
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        }
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    }