treaty -


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use crate::{
    build::{Build, Builder},
    walk::{Walk, WalkMut, WalkOnce},
    UniError, Walker,
};

pub fn from<'value, 'ctx, U, T>(
    value: T,
) -> Result<U, UniError<<T as WalkOnce<'value, 'ctx>>::Error, <U as Build<'value, 'ctx>>::Error>>
where
    U: Build<'value, 'ctx>,
    <U as Build<'value, 'ctx>>::Error: 'value,
    T: WalkOnce<'value, 'ctx>,
    <T as WalkOnce<'value, 'ctx>>::Error: 'value,
{
    build_from::<U::Builder, _>(value)
}

pub fn from_mut<'borrow, 'value, 'ctx, U, T: ?Sized>(
    value: &'borrow mut T,
) -> Result<
    U,
    UniError<<T as WalkMut<'value, 'borrow, 'ctx>>::Error, <U as Build<'value, 'ctx>>::Error>,
>
where
    U: Build<'value, 'ctx>,
    <U as Build<'value, 'ctx>>::Error: 'value,
    T: WalkMut<'value, 'borrow, 'ctx>,
    <T as WalkMut<'value, 'borrow, 'ctx>>::Error: 'value,
{
    build_from_mut::<U::Builder, _>(value)
}

pub fn from_ref<'borrow, 'value, 'ctx, U, T: ?Sized>(
    value: &'borrow T,
) -> Result<U, UniError<<T as Walk<'value, 'borrow, 'ctx>>::Error, <U as Build<'value, 'ctx>>::Error>>
where
    U: Build<'value, 'ctx>,
    <U as Build<'value, 'ctx>>::Error: 'value,
    T: Walk<'value, 'borrow, 'ctx>,
    <T as Walk<'value, 'borrow, 'ctx>>::Error: 'value,
{
    build_from_ref::<U::Builder, _>(value)
}

pub fn build_from<'value, 'ctx, B, T>(
    value: T,
) -> Result<B::Value, UniError<<T as WalkOnce<'value, 'ctx>>::Error, B::Error>>
where
    B: Builder<'value, 'ctx>,
    <B as Builder<'value, 'ctx>>::Error: 'value,
    T: WalkOnce<'value, 'ctx>,
    <T as WalkOnce<'value, 'ctx>>::Error: 'value,
{
    let mut builder = B::init();
    value.into_walker().walk(builder.as_visitor())?;
    builder.finish().map_err(UniError::Visitor)
}

pub fn build_from_mut<'borrow, 'value, 'ctx, B, T: ?Sized>(
    value: &'borrow mut T,
) -> Result<B::Value, UniError<<T as WalkMut<'value, 'borrow, 'ctx>>::Error, B::Error>>
where
    B: Builder<'value, 'ctx>,
    <B as Builder<'value, 'ctx>>::Error: 'value,
    T: WalkMut<'value, 'borrow, 'ctx>,
    <T as WalkMut<'value, 'borrow, 'ctx>>::Error: 'value,
{
    let mut builder = B::init();
    value.walker_mut().walk(builder.as_visitor())?;
    builder.finish().map_err(UniError::Visitor)
}

pub fn build_from_ref<'borrow, 'value, 'ctx, B, T: ?Sized>(
    value: &'borrow T,
) -> Result<B::Value, UniError<<T as Walk<'value, 'borrow, 'ctx>>::Error, B::Error>>
where
    B: Builder<'value, 'ctx>,
    <B as Builder<'value, 'ctx>>::Error: 'value,
    T: Walk<'value, 'borrow, 'ctx>,
    <T as Walk<'value, 'borrow, 'ctx>>::Error: 'value,
{
    let mut builder = B::init();
    value.walker().walk(builder.as_visitor())?;
    builder.finish().map_err(UniError::Visitor)
}