Struct Arena 

pub struct Arena { /* private fields */ }

Implementations

impl Arena

pub fn new() -> Self

pub fn alloc(&mut self, node: SpannedNode) -> NodeRef

pub fn get(&self, r: NodeRef) -> &SpannedNode

pub fn is_valid(&self, r: NodeRef) -> bool

pub fn node(&self, r: NodeRef) -> &Node

pub fn span(&self, r: NodeRef) -> SourceSpan

pub fn as_str(&self, r: NodeRef) -> Option<&str>

pub fn as_map(&self, r: NodeRef) -> Option<&[(String, NodeRef)]>

pub fn map_get(&self, r: NodeRef, key: &str) -> Option<NodeRef>

pub fn as_list(&self, r: NodeRef) -> Option<&[NodeRef]>

pub fn len(&self) -> usize

pub fn map_remove(&mut self, r: NodeRef, key: &str)

pub fn map_insert(&mut self, r: NodeRef, key: String, val: NodeRef)

pub fn set(&mut self, r: NodeRef, node: SpannedNode)

Overwrites the node at r with node. Used by the language-extensions transform to install a rewritten section over the ref the model holds, without threading a new ref back to every caller.

Trait Implementations

impl Debug for Arena

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

Formats the value using the given formatter.

impl Default for Arena

fn default() -> Self

Returns the “default value” for a type.