treaty -


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

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

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

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

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

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

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