Enum SplitDownResult 

pub enum SplitDownResult {
    Split {
        low: AllocatedRange,
        high: AllocatedRange,
    },
    High(AllocatedRange),
    OutOfBounds(AllocatedRange),
}

Result of split_at_align_down

split_at_align_down 的返回结果

Variants

• Split: Successfully split into two non-empty ranges (low, high)
• High: Only high range exists (split point <= start)
• OutOfBounds: Position exceeds range length (pos > len)

变体

• Split: 成功拆分为两个非空范围 (low, high)
• High: 仅存在高范围（分割点 <= start）
• OutOfBounds: 位置超出范围长度 (pos > len)

Variants

Split

Successfully split into two ranges

成功拆分为两个范围

Fields

low: AllocatedRange

Lower range [start, split_point)

低范围 [start, split_point)

high: AllocatedRange

Higher range [split_point, end)

高范围 [split_point, end)

High(AllocatedRange)

Only high range exists (split point aligned to or before start)

仅存在高范围（分割点对齐到 start 或之前）

OutOfBounds(AllocatedRange)

Position out of bounds (pos > len)

位置越界 (pos > len)

Implementations

impl SplitDownResult

pub fn is_split(&self) -> bool

Returns true if the range was successfully split into two parts

如果范围成功拆分为两部分则返回 true

pub fn is_out_of_bounds(&self) -> bool

Returns true if position was out of bounds

如果位置越界则返回 true

pub fn low(&self) -> Option<AllocatedRange>

Get the low range if split succeeded

获取低范围（仅拆分成功时可用）

pub fn high(&self) -> Option<AllocatedRange>

Get the high range (always available except OutOfBounds)

获取高范围（除 OutOfBounds 外始终可用）

Trait Implementations

impl Clone for SplitDownResult

fn clone(&self) -> SplitDownResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SplitDownResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for SplitDownResult

fn eq(&self, other: &SplitDownResult) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SplitDownResult

impl Eq for SplitDownResult

impl StructuralPartialEq for SplitDownResult