@awayfl/avm2/dist/lib/run/ensureBoxedReceiver.js

Virtual machine for executing AS3 code

import { checkValue } from './checkValue';
import { release } from '@awayfl/swf-loader';
import { scopeStacks } from './scopeStacks';
export function ensureBoxedReceiver(sec, receiver, callable) {
    if (receiver && typeof receiver === 'object') {
        release || checkValue(receiver);
        return receiver;
    }
    var boxedReceiver = sec.box(receiver);
    // Boxing still leaves `null` and `undefined` unboxed, so return the current global instead.
    if (!boxedReceiver) {
        if (scopeStacks.length) {
            boxedReceiver = scopeStacks[scopeStacks.length - 1].topScope().global.object;
        }
        else if (callable.receiver) {
            // If no scripts are on the stack (e.g., for ExternalInterface calls), use the function's
            // own global.
            boxedReceiver = callable.receiver.scope.global.object;
        }
    }
    return boxedReceiver;
}