Struct ScopeFrame

pub struct ScopeFrame {
    pub overlays: Vec<(Vec<u8>, OverlayFrame)>,
    pub active_overlays: Vec<usize>,
    pub removed_overlays: Vec<Vec<u8>>,
    pub predecls: HashMap<Vec<u8>, usize>,
}

Fields

overlays: Vec<(Vec<u8>, OverlayFrame)>

List of both active and incactive overlays in this ScopeFrame.

The order does not have any menaning. Indexed locally (within this ScopeFrame) by OverlayIds in active_overlays.

active_overlays: Vec<usize>

List of currently active overlays.

Order is significant: The last item points at the last activated overlay.

removed_overlays: Vec<Vec<u8>>

Deactivated overlays from permanent state. ! Stores OverlayIds from the permanent state, not from this frame. ! Removed overlays from previous scope frames / permanent state

predecls: HashMap<Vec<u8>, usize>

temporary storage for predeclarations

Implementations

impl ScopeFrame

pub fn new() -> ScopeFrame

pub fn with_empty_overlay( name: Vec<u8>, origin: usize, prefixed: bool, ) -> ScopeFrame

pub fn get_var(&self, var_name: &[u8]) -> Option<&usize>

pub fn active_overlay_ids( &self, removed_overlays: &mut Vec<Vec<u8>>, ) -> Vec<usize>

pub fn active_overlays( &self, removed_overlays: &mut Vec<Vec<u8>>, ) -> Vec<&OverlayFrame>

pub fn active_overlay_names( &self, removed_overlays: &mut Vec<Vec<u8>>, ) -> Vec<&Vec<u8>>

pub fn get_overlay_name(&self, overlay_id: usize) -> &Vec<u8>

pub fn get_overlay(&self, overlay_id: usize) -> &OverlayFrame

pub fn get_overlay_mut(&mut self, overlay_id: usize) -> &mut OverlayFrame

pub fn find_overlay(&self, name: &[u8]) -> Option<usize>

pub fn find_active_overlay(&self, name: &[u8]) -> Option<usize>

Trait Implementations

impl Clone for ScopeFrame

fn clone(&self) -> ScopeFrame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScopeFrame

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

Formats the value using the given formatter.

impl Default for ScopeFrame

fn default() -> ScopeFrame

Returns the “default value” for a type.