capnp-js/builder/list/deref.js

Capnproto run-time decoding and encoding for Node

var reader = require('../../reader/layout/list');
var fields = require('../fields');
var upgrade = require('../upgrade');
    module.exports = function(List) {
        List._deref = function(arena, pointer) {
            var instance = new List(arena, false, reader.unsafe(arena, pointer));
            var rt = instance._rt();
            if (rt.dataBytes < List._CT.dataBytes || rt.pointersBytes < List._CT.pointersBytes) {
                upgrade.list(arena, pointer, List._CT);
                return new List(arena, false, reader.unsafe(arena, pointer));
            }
            return instance;
        };
    };