Function retrieveProperty

app/assets/javascripts/workers/worker_world.js:223–282

(currentThangID, currentSpellID, variableChain)

self.retrieveValueFromFrame = function retrieveValueFromFrame(args) {

    var retrieveProperty = function retrieveProperty(currentThangID, currentSpellID, variableChain)
    {
        var prop;
        var value;
        var keys = [];
        for (var i = 0, len = variableChain.length; i < len; i++) {
            prop = variableChain[i];
            if (prop === "this")
            {
                value = self.debugWorld.thangMap[currentThangID];

            }
            else if (i === 0)
            {
                try
                {
                    if (Aether.globals[prop])
                    {
                        value = Aether.globals[prop];
                    }
                    else
                    {
                        var flowStates = self.debugWorld.userCodeMap[currentThangID][currentSpellID].flow.states;
                        //we have to go to the second last flowState as we run the world for one additional frame
                        //to collect the flow
                        value = _.last(flowStates[flowStates.length - 1].statements).variables[prop];
                    }
                }
                catch (e)
                {
                    value = undefined;
                }

            }
            else
            {
                value = value[prop];
            }
            keys.push(prop);
            if (!value) break;
            var classOfValue;
            if (classOfValue = serializedClasses[value.CN])
            {
                if (value.CN === "Thang")
                {
                    var thang = self.debugWorld.thangMap[value.id];
                    value = thang || "<Thang " + value.id + " (non-existent)>";
                }
                else
                {
                    value = classOfValue.deserializeFromAether(value);
                }
            }
        }
        var serializedProperty = {
            "key": keys.join("."),
            "value": self.stringifyValue(value,0)
        };