Struct InstanceNode 

pub struct InstanceNode {
    pub id: NodeId,
    pub element_type: String,
    pub props: IndexMap<String, Value>,
    pub raw_props: Props,
    pub element_template: Option<Arc<Element>>,
    pub ir_node_template: Option<Arc<IRNode>>,
    pub control_flow: Option<ControlFlowKind>,
    pub key: Option<String>,
    pub parent: Option<NodeId>,
    pub children: Vector<NodeId>,
}

Instance node - a concrete instance of an element in the tree

Uses im::Vector for children to enable O(1) structural sharing during clones. This is critical for reconciliation performance where nodes are frequently cloned.

Fields

id: NodeId

Unique node ID

element_type: String

Element type (e.g., “Column”, “Text”, “__ForEach”, “__Conditional”)

props: IndexMap<String, Value>

Resolved props (bindings evaluated to actual values)

raw_props: Props

Raw props (including bindings) for change detection - Arc-wrapped for O(1) clone

element_template: Option<Arc<Element>>

Original element template (for List re-rendering) - legacy Only populated for List elements that need to re-render children Arc-wrapped for O(1) clone during reconciliation

ir_node_template: Option<Arc<IRNode>>

Original IRNode template (for ForEach/Conditional re-rendering) Used for control flow nodes that need to re-render on state change Arc-wrapped for O(1) clone during reconciliation

control_flow: Option<ControlFlowKind>

Control flow metadata for ForEach/Conditional nodes

key: Option<String>

Optional key for reconciliation

parent: Option<NodeId>

Parent node ID

children: Vector<NodeId>

Child node IDs (ordered) - uses im::Vector for O(1) clone

Implementations

impl InstanceNode

pub fn new(id: NodeId, element: &Element, state: &Value) -> Self

pub fn new_full( id: NodeId, element: &Element, state: &Value, data_sources: Option<&IndexMap<String, Value>>, ) -> Self

pub fn new_control_flow( id: NodeId, element_type: &str, props: IndexMap<String, Value>, raw_props: Props, control_flow: ControlFlowKind, ir_node_template: IRNode, ) -> Self

Create a control flow container node (ForEach or Conditional)

pub fn update_props(&mut self, state: &Value)

Update props by re-evaluating bindings against new state

pub fn update_props_with_data_sources( &mut self, state: &Value, data_sources: Option<&IndexMap<String, Value>>, )

Update props by re-evaluating bindings against state and data sources

pub fn is_foreach(&self) -> bool

Check if this is a ForEach control flow node

pub fn is_conditional(&self) -> bool

Check if this is a Conditional control flow node

Trait Implementations

impl Clone for InstanceNode

fn clone(&self) -> InstanceNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InstanceNode

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

Formats the value using the given formatter.