Struct EvalEngine 

pub struct EvalEngine<'arena> { /* private fields */ }

Reusable evaluation engine to avoid allocations

Implementations

impl<'arena> EvalEngine<'arena>

pub fn new(arena: &'arena Bump) -> Self

Create a new evaluation engine with arena for zero-allocation evaluation

pub fn set_local_functions( &mut self, functions: Option<&'arena RefCell<ExpressionFunctionMap>>, )

Set the local expression functions for this evaluation

pub fn arena_reset(&mut self)

Reset the engine for reuse with new expression More comprehensive than arena_clear_stacks - also clears caches and context

pub fn eval( &mut self, ast: &'arena AstExpr<'arena>, ctx: Option<Rc<EvalContext>>, ) -> Result<Real, ExprError>

Evaluate an expression

pub fn set_param_overrides(&mut self, params: BatchParamMap)

Set parameter overrides for batch evaluation. These take precedence over context variables during lookup.

pub fn clear_param_overrides(&mut self)

Clear parameter overrides.

pub fn with_param_overrides<F, R>(&mut self, params: BatchParamMap, f: F) -> R

where F: FnOnce(&mut Self) -> R,

Execute a function with parameter overrides, ensuring they are cleared afterwards. This provides RAII-style cleanup for safe batch evaluation.