Struct LuaEnv 

pub struct LuaEnv { /* private fields */ }

Lexical local environment used by the Lua core eval policy.

Implementations

impl LuaEnv

pub fn new() -> Self

Build an empty Lua local environment.

pub fn child(&self) -> Self

Open a nested scope whose lookups fall through to this one.

pub fn define(&mut self, name: Symbol, value: Value) -> Result<()>

Bind a Lua local value in the current frame.

pub fn contains(&self, name: &Symbol) -> bool

Return whether a Lua local is bound.

pub fn assign(&mut self, name: &Symbol, value: Value) -> Result<Value>

Assign an existing Lua local.

pub fn get(&self, name: &Symbol) -> Result<Value>

Look up a Lua local value.

pub fn capture(&self, name: &Symbol) -> Result<BindingCell>

Capture an existing Lua local as a shared upvalue cell.

Trait Implementations

impl Clone for LuaEnv

fn clone(&self) -> LuaEnv

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LuaEnv

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

Formats the value using the given formatter.

impl Default for LuaEnv

fn default() -> LuaEnv

Returns the “default value” for a type.