Allocator growth (#407)

Adds growth to the block allocator.

- [x] No changelog update needed

agb/src/agb_alloc/block_allocator.rs

@@ -10,9 +10,9 @@ use core::convert::TryInto;
 use core::ptr::NonNull;
 
 use crate::interrupt::free;
-use bare_metal::{CriticalSection, Mutex};
+use bare_metal::Mutex;
 
-use super::bump_allocator::{BumpAllocator, StartEnd};
+use super::bump_allocator::{BumpAllocatorInner, StartEnd};
 use super::SendNonNull;
 
 struct Block {
@@ -37,57 +37,103 @@ impl Block {
         .expect("too large allocation")
         .pad_to_align()
     }
+
+    pub fn layout() -> Layout {
+        Layout::new::<Block>().align_to(8).unwrap().pad_to_align()
+    }
 }
 
 struct BlockAllocatorState {
     first_free_block: Option<SendNonNull<Block>>,
 }
 
+struct BlockAllocatorInner {
+    inner_allocator: BumpAllocatorInner,
+    state: BlockAllocatorState,
+}
+
 pub struct BlockAllocator {
-    inner_allocator: BumpAllocator,
+    inner: Mutex<RefCell<BlockAllocatorInner>>,
-    state: Mutex<RefCell<BlockAllocatorState>>,
 }
 
 impl BlockAllocator {
     pub(crate) const unsafe fn new(start: StartEnd) -> Self {
         Self {
-            inner_allocator: BumpAllocator::new(start),
+            inner: Mutex::new(RefCell::new(BlockAllocatorInner::new(start))),
-            state: Mutex::new(RefCell::new(BlockAllocatorState {
-                first_free_block: None,
-            })),
         }
     }
 
     #[doc(hidden)]
     #[cfg(any(test, feature = "testing"))]
     pub unsafe fn number_of_blocks(&self) -> u32 {
-        free(|key| {
+        free(|key| self.inner.borrow(key).borrow_mut().number_of_blocks())
-            let mut state = self.state.borrow(key).borrow_mut();
+    }
 
+    pub unsafe fn alloc(&self, layout: Layout) -> Option<NonNull<u8>> {
+        free(|key| self.inner.borrow(key).borrow_mut().alloc(layout))
+    }
+
+    pub unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
+        free(|key| self.inner.borrow(key).borrow_mut().dealloc(ptr, layout));
+    }
+
+    pub unsafe fn dealloc_no_normalise(&self, ptr: *mut u8, layout: Layout) {
+        free(|key| {
+            self.inner
+                .borrow(key)
+                .borrow_mut()
+                .dealloc_no_normalise(ptr, layout);
+        });
+    }
+
+    pub unsafe fn grow(
+        &self,
+        ptr: *mut u8,
+        layout: Layout,
+        new_layout: Layout,
+    ) -> Option<NonNull<u8>> {
+        free(|key| {
+            self.inner
+                .borrow(key)
+                .borrow_mut()
+                .grow(ptr, layout, new_layout)
+        })
+    }
+}
+
+impl BlockAllocatorInner {
+    pub(crate) const unsafe fn new(start: StartEnd) -> Self {
+        Self {
+            inner_allocator: BumpAllocatorInner::new(start),
+            state: BlockAllocatorState {
+                first_free_block: None,
+            },
+        }
+    }
+
+    #[doc(hidden)]
+    #[cfg(any(test, feature = "testing"))]
+    pub unsafe fn number_of_blocks(&mut self) -> u32 {
         let mut count = 0;
 
-            let mut list_ptr = &mut state.first_free_block;
+        let mut list_ptr = &mut self.state.first_free_block;
         while let Some(mut current) = list_ptr {
             count += 1;
             list_ptr = &mut current.as_mut().next;
         }
 
         count
-        })
     }
 
     /// Requests a brand new block from the inner bump allocator
-    fn new_block(&self, layout: Layout, cs: CriticalSection) -> Option<NonNull<u8>> {
+    fn new_block(&mut self, layout: Layout) -> Option<NonNull<u8>> {
         let overall_layout = Block::either_layout(layout);
-        self.inner_allocator.alloc_critical(overall_layout, cs)
+        self.inner_allocator.alloc(overall_layout)
     }
 
     /// Merges blocks together to create a normalised list
-    unsafe fn normalise(&self) {
+    unsafe fn normalise(&mut self) {
-        free(|key| {
+        let mut list_ptr = &mut self.state.first_free_block;
-            let mut state = self.state.borrow(key).borrow_mut();
-
-            let mut list_ptr = &mut state.first_free_block;
 
         while let Some(mut current) = list_ptr {
             if let Some(next_elem) = current.as_mut().next {
@@ -110,65 +156,159 @@ impl BlockAllocator {
             }
             list_ptr = &mut current.as_mut().next;
         }
-        });
     }
 
-    pub unsafe fn alloc(&self, layout: Layout) -> Option<NonNull<u8>> {
+    pub unsafe fn alloc(&mut self, layout: Layout) -> Option<NonNull<u8>> {
         // find a block that this current request fits in
         let full_layout = Block::either_layout(layout);
 
-        let (block_after_layout, block_after_layout_offset) = full_layout
+        let mut list_ptr = &mut self.state.first_free_block;
-            .extend(Layout::new::<Block>().align_to(8).unwrap().pad_to_align())
-            .unwrap();
-
-        free(|key| {
-            let mut state = self.state.borrow(key).borrow_mut();
-            let mut current_block = state.first_free_block;
-            let mut list_ptr = &mut state.first_free_block;
         // This iterates the free list until it either finds a block that
         // is the exact size requested or a block that can be split into
         // one with the desired size and another block header.
-            while let Some(mut current) = current_block {
+        loop {
-                let block_to_examine = current.as_mut();
+            match list_ptr {
-                if block_to_examine.size == full_layout.size() {
+                Some(mut current_block) => {
-                    *list_ptr = block_to_examine.next;
+                    if let Some(alloc) = Self::allocate_into_block(list_ptr, full_layout) {
-                    return Some(current.cast());
+                        return Some(alloc);
-                } else if block_to_examine.size >= block_after_layout.size() {
+                    }
-                    // can split block
+                    list_ptr = &mut current_block.as_mut().next;
+                }
+                None => return self.new_block(layout),
+            }
+        }
+    }
+
+    /// splits a block in twain
+    unsafe fn allocate_into_block(
+        reference_to_block_pointer: &mut Option<SendNonNull<Block>>,
+        wanted_layout: Layout,
+    ) -> Option<NonNull<u8>> {
+        let (extended_layout, offset) = wanted_layout.extend(Block::layout()).unwrap();
+
+        let mut examination_block_ptr = reference_to_block_pointer.unwrap().0;
+        let examination_block = examination_block_ptr.as_mut();
+
+        if examination_block.size == wanted_layout.size() {
+            *reference_to_block_pointer = examination_block.next;
+            Some(examination_block_ptr.cast())
+        } else if examination_block.size >= extended_layout.size() {
             let split_block = Block {
-                        size: block_to_examine.size - block_after_layout_offset,
+                size: examination_block.size - offset,
-                        next: block_to_examine.next,
+                next: examination_block.next,
             };
-                    let split_ptr = current
+
+            let split_block_ptr = examination_block_ptr
                 .as_ptr()
                 .cast::<u8>()
-                        .add(block_after_layout_offset)
+                .add(offset)
                 .cast();
-                    *split_ptr = split_block;
+            *split_block_ptr = split_block;
-                    *list_ptr = NonNull::new(split_ptr).map(SendNonNull);
+            *reference_to_block_pointer = NonNull::new(split_block_ptr).map(SendNonNull);
 
-                    return Some(current.cast());
+            Some(examination_block_ptr.cast())
+        } else {
+            None
         }
-                current_block = block_to_examine.next;
-                list_ptr = &mut block_to_examine.next;
     }
 
-            self.new_block(layout, key)
+    pub unsafe fn grow(
-        })
+        &mut self,
+        ptr: *mut u8,
+        initial_layout: Layout,
+        desired_layout: Layout,
+    ) -> Option<NonNull<u8>> {
+        let either_layout_initial = Block::either_layout(initial_layout);
+        let either_layout_desired = Block::either_layout(desired_layout);
+
+        let difference = Layout::from_size_align(
+            either_layout_desired.size() - either_layout_initial.size(),
+            either_layout_initial.align(),
+        )
+        .expect("should be able to construct difference layout");
+
+        if self.is_block_at_end(ptr, either_layout_initial) {
+            let _additional_space = self.inner_allocator.alloc(difference);
+            return NonNull::new(ptr);
         }
 
-    pub unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
+        // cases
+        // * Our block has no free block after it.
+        // * Our block has a free block after that we fit in.
+        // * Our block has a free block after that is too small.
+        // * UNIMPLEMENTED Out block has a free block after that is too small but that is at the end so we can bump allocate some more space.
+
+        let next_block = self.find_first_block_after(ptr);
+
+        if let Some(list_to_block) = next_block {
+            let is_block_directly_after = {
+                if let Some(block) = list_to_block {
+                    block.0.as_ptr() == ptr.add(either_layout_initial.size()).cast()
+                } else {
+                    false
+                }
+            };
+
+            if is_block_directly_after {
+                if let Some(_split) = Self::allocate_into_block(list_to_block, difference) {
+                    return NonNull::new(ptr);
+                }
+            }
+        }
+
+        self.grow_copy(ptr, either_layout_initial, either_layout_desired)
+    }
+
+    unsafe fn grow_copy(
+        &mut self,
+        ptr: *mut u8,
+        initial_layout: Layout,
+        desired_layout: Layout,
+    ) -> Option<NonNull<u8>> {
+        let new_ptr = self.alloc(desired_layout)?;
+
+        core::ptr::copy_nonoverlapping(ptr, new_ptr.as_ptr(), initial_layout.size());
+        self.dealloc(ptr, initial_layout);
+
+        Some(new_ptr)
+    }
+
+    unsafe fn is_block_at_end(&self, ptr: *mut u8, total_layout: Layout) -> bool {
+        self.inner_allocator.tip() == NonNull::new(ptr.add(total_layout.size()))
+    }
+
+    pub unsafe fn dealloc(&mut self, ptr: *mut u8, layout: Layout) {
         self.dealloc_no_normalise(ptr, layout);
         self.normalise();
     }
 
-    pub unsafe fn dealloc_no_normalise(&self, ptr: *mut u8, layout: Layout) {
+    /// Returns a reference to the pointer to the next block
+    /// Useful because you can modify what points to the block and access the block
+    unsafe fn find_first_block_after(
+        &mut self,
+        ptr: *mut u8,
+    ) -> Option<&mut Option<SendNonNull<Block>>> {
+        let mut list_ptr = &mut self.state.first_free_block;
+
+        loop {
+            match list_ptr {
+                Some(mut current_block) => {
+                    if current_block.as_ptr().cast() > ptr {
+                        return Some(list_ptr);
+                    }
+
+                    list_ptr = &mut current_block.as_mut().next;
+                }
+                None => return None,
+            }
+        }
+    }
+
+    pub unsafe fn dealloc_no_normalise(&mut self, ptr: *mut u8, layout: Layout) {
         let new_layout = Block::either_layout(layout).pad_to_align();
-        free(|key| {
-            let mut state = self.state.borrow(key).borrow_mut();
 
         // note that this is a reference to a pointer
-            let mut list_ptr = &mut state.first_free_block;
+        let mut list_ptr = &mut self.state.first_free_block;
 
         // This searches the free list until it finds a block further along
         // than the block that is being freed. The newly freed block is then
@@ -200,7 +340,6 @@ impl BlockAllocator {
                 }
             }
         }
-        });
     }
 }
 
@@ -215,6 +354,24 @@ unsafe impl GlobalAlloc for BlockAllocator {
     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
         self.dealloc(ptr, layout);
     }
+
+    unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
+        let new_layout = Layout::from_size_align_unchecked(new_size, layout.align());
+
+        if new_size > layout.size() {
+            return match self.grow(ptr, layout, new_layout) {
+                Some(p) => p.as_ptr(),
+                None => core::ptr::null_mut(),
+            };
+        }
+
+        let new_ptr = GlobalAlloc::alloc(self, new_layout);
+        if !new_ptr.is_null() {
+            core::ptr::copy_nonoverlapping(ptr, new_ptr, core::cmp::min(layout.size(), new_size));
+            self.dealloc(ptr, layout);
+        }
+        new_ptr
+    }
 }
 
 unsafe impl Allocator for BlockAllocator {
@@ -230,6 +387,42 @@ unsafe impl Allocator for BlockAllocator {
         }
     }
 
+    unsafe fn grow(
+        &self,
+        ptr: NonNull<u8>,
+        old_layout: Layout,
+        new_layout: Layout,
+    ) -> Result<NonNull<[u8]>, core::alloc::AllocError> {
+        match self.grow(ptr.as_ptr(), old_layout, new_layout) {
+            Some(p) => Ok(NonNull::new_unchecked(core::ptr::slice_from_raw_parts_mut(
+                p.as_ptr(),
+                new_layout.size(),
+            ))),
+            None => Err(core::alloc::AllocError),
+        }
+    }
+
+    unsafe fn grow_zeroed(
+        &self,
+        ptr: NonNull<u8>,
+        old_layout: Layout,
+        new_layout: Layout,
+    ) -> Result<NonNull<[u8]>, core::alloc::AllocError> {
+        let new_ptr = self
+            .grow(ptr.as_ptr(), old_layout, new_layout)
+            .ok_or(core::alloc::AllocError)?;
+
+        new_ptr
+            .as_ptr()
+            .add(old_layout.size())
+            .write_bytes(0, new_layout.size() - old_layout.size());
+
+        Ok(NonNull::new_unchecked(core::ptr::slice_from_raw_parts_mut(
+            new_ptr.as_ptr(),
+            new_layout.size(),
+        )))
+    }
+
     unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout) {
         self.dealloc(ptr.as_ptr(), layout);
     }

agb/src/agb_alloc/bump_allocator.rs

@@ -4,35 +4,41 @@ use core::ptr::NonNull;
 
 use super::SendNonNull;
 use crate::interrupt::free;
-use bare_metal::{CriticalSection, Mutex};
+use bare_metal::Mutex;
 
 pub(crate) struct StartEnd {
     pub start: fn() -> usize,
     pub end: fn() -> usize,
 }
 
-pub(crate) struct BumpAllocator {
+pub(crate) struct BumpAllocatorInner {
-    current_ptr: Mutex<RefCell<Option<SendNonNull<u8>>>>,
+    current_ptr: Option<SendNonNull<u8>>,
-    start_end: Mutex<StartEnd>,
+    start_end: StartEnd,
 }
 
-impl BumpAllocator {
+pub(crate) struct BumpAllocator {
+    inner: Mutex<RefCell<BumpAllocatorInner>>,
+}
+
+impl BumpAllocatorInner {
     pub const fn new(start_end: StartEnd) -> Self {
         Self {
-            current_ptr: Mutex::new(RefCell::new(None)),
+            current_ptr: None,
-            start_end: Mutex::new(start_end),
+            start_end,
-        }
         }
     }
 
-impl BumpAllocator {
+    pub fn tip(&self) -> Option<NonNull<u8>> {
-    pub fn alloc_critical(&self, layout: Layout, cs: CriticalSection) -> Option<NonNull<u8>> {
+        self.current_ptr.map(|x| x.0)
-        let mut current_ptr = self.current_ptr.borrow(cs).borrow_mut();
+    }
+
+    pub fn alloc(&mut self, layout: Layout) -> Option<NonNull<u8>> {
+        let current_ptr = &mut self.current_ptr;
 
         let ptr = if let Some(c) = *current_ptr {
             c.as_ptr() as usize
         } else {
-            (self.start_end.borrow(cs).start)()
+            (self.start_end.start)()
         };
 
         let alignment_bitmask = layout.align() - 1;
@@ -43,7 +49,7 @@ impl BumpAllocator {
         let resulting_ptr = ptr + amount_to_add;
         let new_current_ptr = resulting_ptr + layout.size();
 
-        if new_current_ptr >= (self.start_end.borrow(cs).end)() {
+        if new_current_ptr >= (self.start_end.end)() {
             return None;
         }
 
@@ -51,8 +57,11 @@ impl BumpAllocator {
 
         NonNull::new(resulting_ptr as *mut _)
     }
-    pub fn alloc_safe(&self, layout: Layout) -> Option<NonNull<u8>> {
+}
-        free(|key| self.alloc_critical(layout, key))
+
+impl BumpAllocator {
+    fn alloc_safe(&self, layout: Layout) -> Option<NonNull<u8>> {
+        free(|key| self.inner.borrow(key).borrow_mut().alloc(layout))
     }
 }
 

agb/src/agb_alloc/mod.rs

@@ -292,4 +292,18 @@ mod test {
             }
         }
     }
+
+    #[test_case]
+    fn growth_works(_gba: &mut crate::Gba) {
+        let mut growing_vector = Vec::with_capacity(1);
+
+        for i in 0..1000 {
+            growing_vector.push(i);
+            growing_vector.reserve_exact(i + 2);
+
+            for (idx, elem) in growing_vector.iter().enumerate() {
+                assert_eq!(idx, *elem);
+            }
+        }
+    }
 }

examples/hyperspace-roll/Cargo.lock

@@ -176,7 +176,7 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a62391ecb864cf12ed06b2af4eda2e609b97657950d6a8f06841b17726ab253"
 dependencies = [
- "hashbrown",
+ "hashbrown 0.11.2",
  "ttf-parser",
 ]
 
@@ -200,6 +200,12 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
 [[package]]
 name = "hound"
 version = "3.5.0"
@@ -211,7 +217,6 @@ name = "hyperspace-roll"
 version = "0.1.0"
 dependencies = [
  "agb",
- "bare-metal",
 ]
 
 [[package]]
@@ -229,6 +234,16 @@ dependencies = [
  "png",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown 0.12.3",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.140"
@@ -244,6 +259,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.3.7"
@@ -392,6 +413,15 @@ dependencies = [
  "syn 2.0.8",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0efd8caf556a6cebd3b285caf480045fcc1ac04f6bd786b09a6f11af30c4fcf4"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -422,11 +452,36 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.11"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
+checksum = "b403acf6f2bb0859c93c7f0d967cb4a75a7ac552100f9322faf64dc047669b21"
 dependencies = [
  "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.19.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "239410c8609e8125456927e6707163a3b1fdb40561e4b803bc041f466ccfdc13"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
 ]
 
 [[package]]
@@ -452,3 +507,12 @@ name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "winnow"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae8970b36c66498d8ff1d66685dc86b91b29db0c7739899012f63a63814b4b28"
+dependencies = [
+ "memchr",
+]

examples/the-hat-chooses-the-wizard/Cargo.lock

@@ -176,7 +176,7 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a62391ecb864cf12ed06b2af4eda2e609b97657950d6a8f06841b17726ab253"
 dependencies = [
- "hashbrown",
+ "hashbrown 0.11.2",
  "ttf-parser",
 ]
 
@@ -200,6 +200,12 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
 [[package]]
 name = "hound"
 version = "3.5.0"
@@ -221,6 +227,16 @@ dependencies = [
  "png",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown 0.12.3",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.6"
@@ -242,6 +258,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.3.7"
@@ -407,6 +429,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0efd8caf556a6cebd3b285caf480045fcc1ac04f6bd786b09a6f11af30c4fcf4"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -446,11 +477,36 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.11"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
+checksum = "b403acf6f2bb0859c93c7f0d967cb4a75a7ac552100f9322faf64dc047669b21"
 dependencies = [
  "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.19.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "239410c8609e8125456927e6707163a3b1fdb40561e4b803bc041f466ccfdc13"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
 ]
 
 [[package]]
@@ -476,3 +532,12 @@ name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "winnow"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae8970b36c66498d8ff1d66685dc86b91b29db0c7739899012f63a63814b4b28"
+dependencies = [
+ "memchr",
+]

examples/the-purple-night/Cargo.lock

@@ -191,7 +191,7 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a62391ecb864cf12ed06b2af4eda2e609b97657950d6a8f06841b17726ab253"
 dependencies = [
- "hashbrown",
+ "hashbrown 0.11.2",
  "ttf-parser",
 ]
 
@@ -224,6 +224,12 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
 [[package]]
 name = "hound"
 version = "3.5.0"
@@ -245,6 +251,16 @@ dependencies = [
  "png",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown 0.12.3",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.140"
@@ -272,6 +288,12 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.3.7"
@@ -426,6 +448,15 @@ dependencies = [
  "syn 2.0.8",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0efd8caf556a6cebd3b285caf480045fcc1ac04f6bd786b09a6f11af30c4fcf4"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -483,11 +514,36 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.11"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
+checksum = "b403acf6f2bb0859c93c7f0d967cb4a75a7ac552100f9322faf64dc047669b21"
 dependencies = [
  "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.19.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "239410c8609e8125456927e6707163a3b1fdb40561e4b803bc041f466ccfdc13"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
 ]
 
 [[package]]
@@ -514,6 +570,15 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "winnow"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae8970b36c66498d8ff1d66685dc86b91b29db0c7739899012f63a63814b4b28"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "xml-rs"
 version = "0.8.4"