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use std::ffi::{c_double, c_int};
use variadics_please::all_tuples_enumerated;
use crate::{Result, Statement, ffi};
mod sealed {
pub trait Sealed {}
}
use sealed::Sealed;
pub trait Param: Sealed {
#[doc(hidden)]
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()>;
}
pub trait Params: Sealed {
#[doc(hidden)]
fn __bind_in(&self, stmt: &mut Statement<'_>) -> Result<()>;
}
impl Sealed for c_int {}
impl Param for c_int {
#[inline]
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()> {
stmt.bind_i32(i, *self)
}
}
impl Sealed for ffi::sqlite3_int64 {}
impl Param for ffi::sqlite3_int64 {
#[inline]
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()> {
stmt.bind_i64(i, *self)
}
}
impl Sealed for c_double {}
impl Param for c_double {
#[inline]
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()> {
stmt.bind_double(i, *self)
}
}
impl<T: Param> Sealed for Option<T> {}
impl<T: Param> Param for Option<T> {
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()> {
match self.as_ref() {
Some(v) => v.__bind_in(stmt, i),
// explicitly binding NULL is required in case a previous call bound a value here
None => stmt.bind_null(i),
}
}
}
impl Sealed for () {}
impl Param for () {
#[inline]
fn __bind_in(&self, stmt: &mut Statement<'_>, i: c_int) -> Result<()> {
stmt.bind_null(i)
}
}
impl Params for () {
fn __bind_in(&self, _stmt: &mut Statement<'_>) -> Result<()> {
Ok(())
}
}
macro_rules! impl_params {
($(($i:tt, $T:ident)),*) => {
impl<$($T:Param),*> Sealed for ($($T,)*) {}
impl<$($T:Param),*> Params for ($($T,)*) {
fn __bind_in(&self, stmt: &mut Statement<'_>) -> Result<()> {
$(self.$i.__bind_in(stmt, $i + 1)?;)*
Ok(())
}
}
impl<$($T:Param),*> Sealed for ($(($T, c_int),)*) {}
impl<$($T:Param),*> Params for ($(($T, c_int),)*) {
fn __bind_in(&self, stmt: &mut Statement<'_>) -> Result<()> {
$(self.$i.0.__bind_in(stmt, self.$i.1)?;)*
Ok(())
}
}
}
}
all_tuples_enumerated!(impl_params, 1, 12, T);
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