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master
tokio-postgres/src/to_statement.rs
57 строк
1 KB
Steven Fackler
fix clippy
02 фев 2025, 23:03
Не верифицирован
02 фев 2025, 23:03
720ffe8
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use crate::to_statement::private::{Sealed, ToStatementType}; use crate::Statement; mod private { use crate::{Client, Error, Statement}; pub trait Sealed {} pub enum ToStatementType<'a> { Statement(&'a Statement), Query(&'a str), } impl ToStatementType<'_> { pub async fn into_statement(self, client: &Client) -> Result<Statement, Error> { match self { ToStatementType::Statement(s) => Ok(s.clone()), ToStatementType::Query(s) => client.prepare(s).await, } } } } /// A trait abstracting over prepared and unprepared statements. /// /// Many methods are generic over this bound, so that they support both a raw query string as well as a statement which /// was prepared previously. /// /// This trait is "sealed" and cannot be implemented by anything outside this crate. pub trait ToStatement: Sealed { #[doc(hidden)] fn __convert(&self) -> ToStatementType<'_>; } impl ToStatement for Statement { fn __convert(&self) -> ToStatementType<'_> { ToStatementType::Statement(self) } } impl Sealed for Statement {} impl ToStatement for str { fn __convert(&self) -> ToStatementType<'_> { ToStatementType::Query(self) } } impl Sealed for str {} impl ToStatement for String { fn __convert(&self) -> ToStatementType<'_> { ToStatementType::Query(self) } } impl Sealed for String {}