Struct Engine 

pub struct Engine { /* private fields */ }

Engine-scoped execution surface for JOSIE programs.

This keeps operator registration instance-local (no global singleton), so different runtimes/projects can have different x.* extensions safely.

Implementations

impl Engine

pub fn new() -> Self

Create a new engine with core + stdlib operators preloaded.

pub fn register( &mut self, name: impl Into<String>, operator: Operator, ) -> Option<Operator>

Register or replace an operator, typically in x.*.

pub fn check(&self, input: &Value) -> Result<Program, ValidationError>

Validate and parse program document.

pub fn compile( &self, program: &Program, ) -> Result<CompiledProgram, ValidationError>

Compile once.

pub fn run(&self, program: &Program) -> Result<ExecutionOutput, RuntimeError>

Run one-shot.

pub fn run_compiled( &self, compiled: &CompiledProgram, state: &mut State, ) -> Result<Value, RuntimeError>

Run compiled program with caller-managed state.

pub fn operators(&self) -> &Operators

Access the operator registry (read-only).

Trait Implementations

impl Default for Engine

fn default() -> Engine

Returns the “default value” for a type.