Enum Change 

pub enum Change {
    SetAttr {
        path: Vec<usize>,
        key: String,
        value: Value,
    },
    RemoveAttr {
        path: Vec<usize>,
        key: String,
    },
    SetText {
        path: Vec<usize>,
        text: Option<String>,
    },
    SetMarks {
        path: Vec<usize>,
        marks: Option<Vec<Mark>>,
    },
    SetExtra {
        path: Vec<usize>,
        key: String,
        value: Value,
    },
    RemoveExtra {
        path: Vec<usize>,
        key: String,
    },
    Insert {
        path: Vec<usize>,
        index: usize,
        node: Node,
    },
    Remove {
        path: Vec<usize>,
        index: usize,
    },
    Replace {
        path: Vec<usize>,
        node: Node,
    },
    Move {
        path: Vec<usize>,
        from: usize,
        to: usize,
    },
}

A single structural change between two Node trees.

Serializes as a tagged object, e.g. {"op":"setText","path":[0,0],"text":"hi"}.

Variants

SetAttr

Set (insert or overwrite) attribute key on the node at path.

Fields

path: Vec<usize>

Index path of the target node.

key: String

Attribute key.

value: Value

New attribute value.

RemoveAttr

Remove attribute key from the node at path.

Fields

path: Vec<usize>

Index path of the target node.

key: String

Attribute key.

SetText

Set the text payload of the node at path (None clears it).

Fields

path: Vec<usize>

Index path of the target node.

text: Option<String>

New text payload, or None to clear.

SetMarks

Replace the whole mark list of the node at path (None clears it).

Fields

path: Vec<usize>

Index path of the target node.

marks: Option<Vec<Mark>>

New mark list, or None to clear.

SetExtra

Set (insert or overwrite) unknown top-level field key on the node at path.

Fields

path: Vec<usize>

Index path of the target node.

key: String

Field key.

value: Value

New field value.

RemoveExtra

Remove unknown top-level field key from the node at path.

Fields

path: Vec<usize>

Index path of the target node.

key: String

Field key.

Insert

Insert node as a child of the node at path (the parent), at index.

Fields

path: Vec<usize>

Index path of the parent node.

index: usize

Child position to insert at.

node: Node

The node to insert.

Remove

Remove the child at index of the node at path (the parent).

Fields

path: Vec<usize>

Index path of the parent node.

index: usize

Child position to remove.

Replace

Replace the node at path wholesale (used when its type changes).

Fields

path: Vec<usize>

Index path of the target node (empty = root).

node: Node

The replacement node.

Move

Relocate a child within the same parent’s list, without cloning its subtree. from/to are interpreted against the live list: the child at from is removed first, then re-inserted so it lands at index to in the post-removal list — observationally Remove{from} + Insert{to}, so it composes with the same live-index cursor model as the other ops.

Fields

path: Vec<usize>

Index path of the parent node.

from: usize

Live index of the child to move (before this op).

to: usize

Target index in the list after the child is removed.

Trait Implementations

impl Clone for Change

fn clone(&self) -> Change

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Change

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Change

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Change

fn eq(&self, other: &Change) -> 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 Serialize for Change

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Change