Method with_append

crates/codegen/src/symboltable.rs:419–427

(&mut self, x: &mut T, f: F)

        /// returns, the reference will be popped off the stack.
        #[cfg(feature = "std")]
        pub fn with_append<F, R>(&mut self, x: &mut T, f: F) -> R
        where
            F: FnOnce(&mut Self) -> R,
        {
            self.v.push(x.into());
            let res = std::panic::catch_unwind(core::panic::AssertUnwindSafe(|| f(self)));
            self.v.pop();
            res.unwrap_or_else(|x| std::panic::resume_unwind(x))
        }

        /// Appends a reference to this stack for the duration of the function `f`. When `f`
        /// returns, the reference will be popped off the stack.