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 | 1 | +// Copyright (c) 2025 PHPER Framework Team  | 
 | 2 | +// PHPER is licensed under Mulan PSL v2.  | 
 | 3 | +// You can use this software according to the terms and conditions of the Mulan  | 
 | 4 | +// PSL v2. You may obtain a copy of Mulan PSL v2 at:  | 
 | 5 | +//          http://license.coscl.org.cn/MulanPSL2  | 
 | 6 | +// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY  | 
 | 7 | +// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO  | 
 | 8 | +// NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.  | 
 | 9 | +// See the Mulan PSL v2 for more details.  | 
 | 10 | + | 
 | 11 | +//! Memory allocation utilities and boxed types for PHP values.  | 
 | 12 | +
  | 
 | 13 | +pub use phper_alloc::{RefClone, ToRefOwned};  | 
 | 14 | +use std::{  | 
 | 15 | +    borrow::{Borrow, BorrowMut},  | 
 | 16 | +    fmt::{self},  | 
 | 17 | +    mem::ManuallyDrop,  | 
 | 18 | +    ops::{Deref, DerefMut},  | 
 | 19 | +};  | 
 | 20 | + | 
 | 21 | +/// A smart pointer for PHP values allocated in the Zend Engine memory.  | 
 | 22 | +///  | 
 | 23 | +/// `EBox<T>` provides owned access to values allocated in PHP's memory  | 
 | 24 | +/// management system. It automatically handles deallocation when dropped,  | 
 | 25 | +/// ensuring proper cleanup of PHP resources.  | 
 | 26 | +pub struct EBox<T> {  | 
 | 27 | +    ptr: *mut T,  | 
 | 28 | +}  | 
 | 29 | + | 
 | 30 | +impl<T> EBox<T> {  | 
 | 31 | +    /// Constructs from a raw pointer.  | 
 | 32 | +    ///  | 
 | 33 | +    /// # Safety  | 
 | 34 | +    ///  | 
 | 35 | +    /// Make sure the pointer is from `into_raw`, or created from `emalloc`.  | 
 | 36 | +    pub unsafe fn from_raw(raw: *mut T) -> Self {  | 
 | 37 | +        Self { ptr: raw }  | 
 | 38 | +    }  | 
 | 39 | + | 
 | 40 | +    /// Consumes and returning a wrapped raw pointer.  | 
 | 41 | +    ///  | 
 | 42 | +    /// Will leak memory.  | 
 | 43 | +    pub fn into_raw(b: EBox<T>) -> *mut T {  | 
 | 44 | +        ManuallyDrop::new(b).ptr  | 
 | 45 | +    }  | 
 | 46 | +}  | 
 | 47 | + | 
 | 48 | +impl<T: fmt::Debug> fmt::Debug for EBox<T> {  | 
 | 49 | +    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {  | 
 | 50 | +        fmt::Debug::fmt(&**self, f)  | 
 | 51 | +    }  | 
 | 52 | +}  | 
 | 53 | + | 
 | 54 | +impl<T> Deref for EBox<T> {  | 
 | 55 | +    type Target = T;  | 
 | 56 | + | 
 | 57 | +    fn deref(&self) -> &Self::Target {  | 
 | 58 | +        unsafe { self.ptr.as_ref().unwrap() }  | 
 | 59 | +    }  | 
 | 60 | +}  | 
 | 61 | + | 
 | 62 | +impl<T> DerefMut for EBox<T> {  | 
 | 63 | +    fn deref_mut(&mut self) -> &mut Self::Target {  | 
 | 64 | +        unsafe { self.ptr.as_mut().unwrap() }  | 
 | 65 | +    }  | 
 | 66 | +}  | 
 | 67 | + | 
 | 68 | +impl<T> Drop for EBox<T> {  | 
 | 69 | +    fn drop(&mut self) {  | 
 | 70 | +        unsafe {  | 
 | 71 | +            self.ptr.drop_in_place();  | 
 | 72 | +        }  | 
 | 73 | +    }  | 
 | 74 | +}  | 
 | 75 | + | 
 | 76 | +impl<T> Borrow<T> for EBox<T> {  | 
 | 77 | +    fn borrow(&self) -> &T {  | 
 | 78 | +        unsafe { self.ptr.as_ref().unwrap() }  | 
 | 79 | +    }  | 
 | 80 | +}  | 
 | 81 | + | 
 | 82 | +impl<T> BorrowMut<T> for EBox<T> {  | 
 | 83 | +    fn borrow_mut(&mut self) -> &mut T {  | 
 | 84 | +        unsafe { self.ptr.as_mut().unwrap() }  | 
 | 85 | +    }  | 
 | 86 | +}  | 
 | 87 | + | 
 | 88 | +impl<T> AsRef<T> for EBox<T> {  | 
 | 89 | +    fn as_ref(&self) -> &T {  | 
 | 90 | +        unsafe { self.ptr.as_ref().unwrap() }  | 
 | 91 | +    }  | 
 | 92 | +}  | 
 | 93 | + | 
 | 94 | +impl<T> AsMut<T> for EBox<T> {  | 
 | 95 | +    fn as_mut(&mut self) -> &mut T {  | 
 | 96 | +        unsafe { self.ptr.as_mut().unwrap() }  | 
 | 97 | +    }  | 
 | 98 | +}  | 
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