scopeguard.rs - source

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regex

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regex_syntax

rustc_demangle

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ryu

buffer

pretty

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same_file

scopeguard

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backport.rs display.rs error.rs eval.rs identifier.rs impls.rs lib.rs parse.rs serde.rs

serde

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format.rs ignored_any.rs impls.rs mod.rs seed.rs utf8.rs value.rs

private

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ser

fmt.rs impls.rs impossible.rs mod.rs

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shared_child

sys

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smallvec

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strip_ansi_escapes

strsim

structopt

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supports_color

syn

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data_model.rs host.rs lib.rs parse_error.rs targets.rs triple.rs

target_spec

errors.rs lib.rs platform.rs simple_eval.rs spec.rs triple.rs

termcolor

textwrap

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time

display.rs duration.rs lib.rs parse.rs sys.rs

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twox_hash

lib.rs sixty_four.rs thirty_two.rs xxh3.rs

unicode_xid

lib.rs tables.rs

utf8parse

lib.rs types.rs

vte

definitions.rs lib.rs params.rs table.rs

vte_generate_state_changes

walkdir

dent.rs error.rs lib.rs util.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,
}

#[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;
    #[inline]
    fn deref(&self) -> &T {
        &self.value
    }
}

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

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