feat: implement ngx_queue_t wrapper and an owning Queue on top of it

[bavshin-f5]

Also, address feedback for the RbTreeMap implementation from #164

[Copilot]

Pull Request Overview

This PR implements a ngx_queue_t wrapper and an owning Queue type, and addresses feedback for the RbTreeMap implementation. The changes provide comprehensive queue/linked list functionality alongside improvements to the existing red-black tree implementation.

• Adds a new queue.rs module with NgxQueue wrapper and owning Queue type
• Refactors RbTreeMap to use a new NgxRbTree wrapper for better abstraction
• Updates module exports to include the new queue functionality

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/collections/rbtree.rs	Refactors RbTreeMap to use NgxRbTree wrapper, adds NgxRbTreeEntry trait, renames iterator types
src/collections/queue.rs	New module implementing NgxQueue wrapper and owning Queue with comprehensive iterator support
src/collections/mod.rs	Exports new Queue type and queue module

Comments suppressed due to low confidence (10)

src/collections/rbtree.rs:34

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'node' to better reflect that it's an rbtree node pointer.

    fn from_rbtree_node(q: NonNull<ngx_rbtree_node_t>) -> NonNull<Self>;

src/collections/rbtree.rs:40

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'node' to be consistent with the trait definition and improve clarity.

    fn from_rbtree_node(q: NonNull<ngx_rbtree_node_t>) -> NonNull<Self> {

src/collections/rbtree.rs:41

• [nitpick] Return value should match the renamed parameter. If parameter is renamed to 'node', this should return 'node'.

        q

src/collections/rbtree.rs:204

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'node' for consistency with the trait definition.

    fn from_rbtree_node(q: NonNull<ngx_rbtree_node_t>) -> NonNull<Self> {

src/collections/rbtree.rs:205

• [nitpick] Usage should match the renamed parameter. If parameter is renamed to 'node', this should use 'node' instead of 'q'.

        unsafe { ngx_rbtree_data!(q, Self, node) }

src/collections/queue.rs:32

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'queue_node' or 'node' to better reflect its purpose.

    fn from_queue(q: NonNull<ngx_queue_t>) -> NonNull<Self>;

src/collections/queue.rs:38

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'queue_node' or 'node' for consistency with the trait definition.

    fn from_queue(q: NonNull<ngx_queue_t>) -> NonNull<Self> {

src/collections/queue.rs:39

• [nitpick] Return value should match the renamed parameter. If parameter is renamed, this should return the new parameter name.

        q

src/collections/queue.rs:376

• [nitpick] Parameter name 'q' is ambiguous. Consider renaming it to 'queue_node' or 'node' for consistency with the trait definition.

    fn from_queue(q: NonNull<ngx_queue_t>) -> NonNull<Self> {

src/collections/queue.rs:377

• [nitpick] Usage should match the renamed parameter. If parameter is renamed, this macro call should use the new parameter name.

        unsafe { ngx_queue_data!(q, Self, queue) }

[ensh63]

LGFM

[xeioex]

Looks great.