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feat(allocator): add Allocator::end_ptr method #12330

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Merged
graphite-app merged 1 commit into from
Jul 18, 2025
Merged

feat(allocator): add Allocator::end_ptr method #12330

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10 changes: 10 additions & 0 deletions crates/oxc_allocator/src/from_raw_parts.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
//! * [`Allocator::alloc_bytes_start`]
//! * [`Allocator::data_ptr`]
//! * [`Allocator::set_data_ptr`]
//! * [`Allocator::end_ptr`]

use std::{
alloc::Layout,
Expand Down Expand Up @@ -230,6 +231,15 @@ impl Allocator {
chunk_footer.ptr.get()
}

/// Get pointer to end of this [`Allocator`]'s current chunk (after the `ChunkFooter`).
pub fn end_ptr(&self) -> NonNull<u8> {
// SAFETY: `chunk_footer_ptr` returns pointer to a valid `ChunkFooter`,
// so stepping past it cannot be out of bounds of the chunk's allocation.
// If `Allocator` has not allocated, so `chunk_footer_ptr` returns a pointer to the static
// empty chunk, it's still valid.
unsafe { self.chunk_footer_ptr().add(1).cast::<u8>() }
}

/// Get reference to current [`ChunkFooter`].
///
/// # SAFETY
Expand Down
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