Struct rhai::EvalState

pub struct EvalState {
    pub source: Option<Identifier>,
    pub always_search: bool,
    pub scope_level: usize,
    pub operations: u64,
    pub modules: usize,
    pub resolver: Option<Shared<StaticModuleResolver>>,
    // some fields omitted
}

(INTERNALS) A type that holds all the current states of the Engine. Exported under the internals feature only.

Volatile Data Structure

This type is volatile and may change.

Fields

source: Option<Identifier>

Source of the current context.

always_search: bool

Normally, access to variables are parsed with a relative offset into the scope to avoid a lookup. In some situation, e.g. after running an eval statement, subsequent offsets become mis-aligned. When that happens, this flag is turned on to force a scope lookup by name.

scope_level: usize

Level of the current scope. The global (root) level is zero, a new block (or function call) is one level higher, and so on.

operations: u64

Number of operations performed.

modules: usize

Number of modules loaded.

resolver: Option<Shared<StaticModuleResolver>>

Embedded module resolver.

Implementations

impl State

pub fn is_global(&self) -> bool

Is the state currently at global (root) level?

pub fn fn_resolution_cache_mut(
    &mut self
) -> &mut BTreeMap<u64, Option<Box<FnResolutionCacheEntry>>>

Get a mutable reference to the current function resolution cache.

pub fn push_fn_resolution_cache(&mut self)

Push an empty function resolution cache onto the stack and make it current.

pub fn pop_fn_resolution_cache(&mut self)

Remove the current function resolution cache from the stack and make the last one current.

Panics

Panics if there are no more function resolution cache in the stack.

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for State

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

Formats the value using the given formatter.

impl Default for State

fn default() -> State

Returns the “default value” for a type.