ext-php-rs 0.5.0

Bindings for the Zend API to build PHP extensions natively in Rust.
Documentation 
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//! Utilities for interacting with refcounted PHP types.

use crate::bindings::{zend_refcounted_h, zend_string};

use super::object::ZendObject;

/// Object used to store Zend reference counter.
pub type ZendRefcount = zend_refcounted_h;

/// Implemented on refcounted types.
pub trait PhpRc {
    /// Returns an immutable reference to the corresponding refcount object.
    fn get_rc(&self) -> &ZendRefcount;

    /// Returns a mutable reference to the corresponding refcount object.
    fn get_rc_mut(&mut self) -> &mut ZendRefcount;

    /// Returns the number of references to the object.
    fn get_count(&self) -> u32 {
        self.get_rc().refcount
    }

    /// Increments the reference counter by 1.
    fn inc_count(&mut self) {
        self.get_rc_mut().refcount += 1
    }

    /// Decrements the reference counter by 1.
    fn dec_count(&mut self) {
        self.get_rc_mut().refcount -= 1;
    }
}

macro_rules! rc {
    ($($t: ty),*) => {
        $(
            impl PhpRc for $t {
                fn get_rc(&self) -> &ZendRefcount {
                    &self.gc
                }

                fn get_rc_mut(&mut self) -> &mut ZendRefcount {
                    &mut self.gc
                }
            }
        )*
    };
}

rc!(ZendObject, zend_string);