Struct rhai::EvalContext

pub struct EvalContext<'a, 's, 'ps, 'g, 'pg, 'c, 'pc, 't, 'pt> { /* private fields */ }

Context of a script evaluation process.

Implementations

impl<'a, 's, 'ps, 'g, 'pg, 'c, 'pc, 't, 'pt> EvalContext<'a, 's, 'ps, 'g, 'pg, 'c, 'pc, 't, 'pt>

pub fn new(
    engine: &'a Engine,
    scope: &'s mut Scope<'ps>,
    global: &'g mut GlobalRuntimeState<'pg>,
    caches: Option<&'c mut Caches<'pc>>,
    lib: &'a [&'a Module],
    this_ptr: &'t mut Option<&'pt mut Dynamic>,
    level: usize
) -> Self

Create a new EvalContext.

pub const fn engine(&self) -> &'a Engine

The current Engine.

pub fn source(&self) -> Option<&str>

The current source.

pub const fn scope(&self) -> &Scope<'ps>

The current Scope.

pub fn scope_mut(&mut self) -> &mut &'s mut Scope<'ps>

Get a mutable reference to the current Scope.

pub fn iter_imports(&self) -> impl Iterator<Item = (&str, &Module)>

Get an iterator over the current set of modules imported via import statements, in reverse order (i.e. modules imported last come first).

pub const fn tag(&self) -> &Dynamic

Custom state kept in a Dynamic.

pub fn tag_mut(&mut self) -> &mut Dynamic

Mutable reference to the custom state kept in a Dynamic.

pub const fn global_runtime_state(&self) -> &GlobalRuntimeState<'_>

(internals) The current GlobalRuntimeState. Exported under the internals feature only.

pub fn global_runtime_state_mut(
    &mut self
) -> &mut &'g mut GlobalRuntimeState<'pg>

(internals) Get a mutable reference to the current GlobalRuntimeState. Exported under the internals feature only.

pub fn iter_namespaces(&self) -> impl Iterator<Item = &Module>

Get an iterator over the namespaces containing definition of all script-defined functions.

pub const fn namespaces(&self) -> &[&Module]

(internals) The current set of namespaces containing definitions of all script-defined functions. Exported under the internals feature only.

pub fn this_ptr(&self) -> Option<&Dynamic>

The current bound this pointer, if any.

pub fn this_ptr_mut(&mut self) -> &mut Option<&'pt mut Dynamic>

Mutable reference to the current bound this pointer, if any.

pub const fn call_level(&self) -> usize

The current nesting level of function calls.

pub fn eval_expression_tree(
    &mut self,
    expr: &Expression<'_>
) -> Result<Dynamic, Box<EvalAltResult>>

Evaluate an expression tree within this evaluation context.

WARNING - Low Level API

This function is very low level. It evaluates an expression from an AST.

Trait Implementations

impl<'a, 's, 'ps, 'g, 'pg, 'c, 'pc, 't, 'pt> Debug for EvalContext<'a, 's, 'ps, 'g, 'pg, 'c, 'pc, 't, 'pt>

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

Formats the value using the given formatter.