Context

According to ECMAScript specification, JavaScript code is evaluated in a Realm, which defines the execution environment (e.g., global object and set of built-in objects). QuickJS uses a different term for this concept -- Context, which I have adopted in Jaculus-machine.

Jaculus-machine allows creating only one Context per Machine. This Context is created when the Machine is initialized and is accessible through the MachineBase::context method as a ContextRef object.

ContextRef can be used to access the global object of the Context through the getGlobalObject method. It is also an argument to many functions working with JavaScript values.

Usage

#include <jac/machine.h>

using Machine = jac::MachineBase;

Machine machine;
machine.initialize();

jac::ContextRef ctx = machine.context();
jac::Object global = ctx.getGlobalObject();