Struct JsLanguage 

pub struct JsLanguage { /* private fields */ }

JavaScript language plugin backed by Boa.

Implements the Language trait to produce JS-backed expressions, predicates, and mutating expressions for use in Apache Camel route definitions.

Thread Safety

JsLanguage is Clone + Send + Sync. Each evaluation creates a fresh Boa Context (via BoaEngine), so no shared mutable state exists across evaluations.

Example

use camel_language_js::JsLanguage;
use camel_language_api::Language;

let lang = JsLanguage::new();
let expr = lang.create_expression("camel.headers.get('foo')").unwrap();

Implementations

impl JsLanguage

pub fn new() -> Self

Create a new JsLanguage with the default BoaEngine and default limits.

pub fn with_limits(limits: JsLimitsConfig) -> Self

Create a JsLanguage with a custom JsLimitsConfig.

Uses the default BoaEngine internally.

pub fn with_engine<E: JsEngine>(engine: E) -> Self

Create a JsLanguage with a custom JsEngine implementation.

Useful for testing or providing an alternative JS runtime. Uses default limits.

pub fn with_engine_and_limits<E: JsEngine>( engine: E, limits: JsLimitsConfig, ) -> Self

Create a JsLanguage with a custom engine and custom limits.

Trait Implementations

impl Clone for JsLanguage

fn clone(&self) -> JsLanguage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for JsLanguage

fn default() -> Self

Returns the “default value” for a type.

impl Language for JsLanguage

fn name(&self) -> &'static str

fn create_expression( &self, script: &str, ) -> Result<Box<dyn Expression>, LanguageError>

fn create_predicate( &self, script: &str, ) -> Result<Box<dyn Predicate>, LanguageError>

fn create_mutating_expression( &self, script: &str, ) -> Result<Box<dyn MutatingExpression>, LanguageError>

Create a mutating expression. Default returns NotSupported.

fn create_mutating_predicate( &self, _script: &str, ) -> Result<Box<dyn MutatingPredicate>, LanguageError>

Create a mutating predicate. Default returns NotSupported.