Struct Transform

pub struct Transform {
    pub base_doc: Arc<NodePool>,
    pub steps: Vector<Arc<dyn Step>>,
    pub invert_steps: Vector<Arc<dyn Step>>,
    pub schema: Arc<Schema>,
    /* private fields */
}

Fields

base_doc: Arc<NodePool>

原始文档状态

steps: Vector<Arc<dyn Step>>

存储所有操作步骤

invert_steps: Vector<Arc<dyn Step>>

存储所有反向操作步骤

schema: Arc<Schema>

文档的模式定义

Implementations

impl Transform

pub fn new(doc: Arc<NodePool>, schema: Arc<Schema>) -> Transform

pub fn doc(&self) -> Arc<NodePool>

获取当前文档状态，使用延迟计算

pub fn step(&mut self, step: Arc<dyn Step>) -> TransformResult<()>

pub fn doc_changed(&self) -> bool

检查文档是否被修改

pub fn apply_steps_batch( &mut self, steps: Vec<Arc<dyn Step>>, ) -> TransformResult<()>

批量应用步骤（优化版本）

pub fn commit(&mut self)

提交更改，将当前状态设为新的基础状态 保留历史记录（steps 和 invert_steps）以支持回滚功能

pub fn rollback(&mut self)

回滚所有未提交的更改

pub fn rollback_steps(&mut self, count: usize) -> TransformResult<()>

回滚指定数量的步骤

pub fn clear_history(&mut self)

清除历史记录（释放内存）

pub fn history_size(&self) -> usize

获取历史记录大小

Trait Implementations

impl Clone for Transform

fn clone(&self) -> Transform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Transform

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

Formats the value using the given formatter.