@awayfl/avm2/lib/run/applyTraits.ts

Virtual machine for executing AS3 code

import { ITraits } from './ITraits';
import { RuntimeTraits } from '../abc/lazy/RuntimeTraits';
import { Namespace } from '../abc/lazy/Namespace';
import { TRAIT } from '../abc/lazy/TRAIT';
import { assert } from '@awayjs/graphics';
import { release, defineReadOnlyProperty } from '@awayfl/swf-loader';
import { ASNamespace } from '../natives/xml';
import { checkValue } from './checkValue';
import { RuntimeTraitInfo } from '../abc/lazy/RuntimeTraitInfo';

export function applyTraits(object: ITraits, traits: RuntimeTraits): void {
	release || assert(!object.hasOwnProperty('traits'));
	defineReadOnlyProperty(object, 'traits', traits);
	const T: RuntimeTraitInfo[] = traits.getTraitsList();
	for (let i = 0; i < T.length; i++) {
		const t: RuntimeTraitInfo = T[i];
		let p: PropertyDescriptor = t;
		if (p.value instanceof Namespace) {
			// We can't call |object.sec.AXNamespace.FromNamespace(...)| because the
			// AXNamespace class may not have been loaded yet. However, at this point we do have a
			// valid reference to |object.sec.AXNamespace| because |prepareNativeClass| has
			// been called.
			p = { value: ASNamespace.FromNamespace.call(object.sec.AXNamespace, p.value) };
		}
		if (!release && (t.kind === TRAIT.Slot || t.kind === TRAIT.Const)) {
			checkValue(p.value);
		}
		Object.defineProperty(object, t.multiname.getMangledName(), p);
	}
}