scopeguard.rs - source

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addr2line

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either

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log

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matrixmultiply

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memchr

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lib.rs shared.rs

ndarray

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maybe_nan

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smartnoise_ffi

lib.rs utilities.rs

smartnoise_runtime

smartnoise_validator

special

beta.rs consts.rs error.rs gamma.rs lib.rs math.rs

statrs

syn

unicode_xid

lib.rs tables.rs

// Extracted from the scopeguard crate
use core::ops::{Deref, DerefMut};

pub struct ScopeGuard<T, F>
where
    F: FnMut(&mut T),
{
    dropfn: F,
    value: T,
}

#[cfg_attr(feature = "inline-more", inline)]
pub fn guard<T, F>(value: T, dropfn: F) -> ScopeGuard<T, F>
where
    F: FnMut(&mut T),
{
    ScopeGuard { dropfn, value }
}

impl<T, F> Deref for ScopeGuard<T, F>
where
    F: FnMut(&mut T),
{
    type Target = T;
    #[cfg_attr(feature = "inline-more", inline)]
    fn deref(&self) -> &T {
        &self.value
    }
}

impl<T, F> DerefMut for ScopeGuard<T, F>
where
    F: FnMut(&mut T),
{
    #[cfg_attr(feature = "inline-more", inline)]
    fn deref_mut(&mut self) -> &mut T {
        &mut self.value
    }
}

impl<T, F> Drop for ScopeGuard<T, F>
where
    F: FnMut(&mut T),
{
    #[cfg_attr(feature = "inline-more", inline)]
    fn drop(&mut self) {
        (self.dropfn)(&mut self.value)
    }
}