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Added utilities for generic reviver, toJSON, and fromJSON. Eventually will be used for loading and saving objects

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This commit is contained in:
Daniel Xie 2016-11-30 16:08:21 -06:00
parent 2d41a63707
commit b821fc2ea9
4 changed files with 104 additions and 11 deletions
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3
index.html
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@ -28,6 +28,9 @@
<script src="src/engine.js"></script>
<!-- Utils -->
<script src="utils/jsonfn/jsonfn.js"></script>
</head>
<body>
<div id="mainmenu-container">

2
src/Netscript/NetscriptWorker.js
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@ -3,6 +3,8 @@
//this flag from outside. If the evaluate() function sees that flag it rejects the current
// Promise. We can catch that rejection and stop the script.
//TODO Tested For and while and generic call statements. Have not tested if statements
/* Actual Worker Code */
function WorkerScript() {
this.name = "";

45
src/Terminal.js
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@ -1,3 +1,13 @@
function TestObj() {
this.value = 1;
}
TestObj.prototype.setValue = function(val) {
this.value = val;
}
var testObj = new TestObj();
//Terminal
var post = function(input) {
$("#terminal-input").before('<tr class="posted"><td style="color: #66ff33;">' + input.replace( / /g, "&nbsp;" ) + '</td></tr>');
@ -365,17 +375,30 @@ var Terminal = {
break;
case "test":
//TODO
//TESTED: print, for loops, while loops, prog,
// basic ops, var, assign all seem fine
//UNTESTED: if, elif, else
var code = "i = 0; while (i <= 20) {print(i); i = i+2; hack(); sleep();}";
var ast = Parser(Tokenizer(InputStream(code)));
console.log("Printing AST below")
console.log(ast);
var globalEnv = new Environment();
evaluate(ast, globalEnv);
post(testObj.value.toString());
testObj.setValue(testObj.value + 1);
break;
case "testSave":
var testSave = JSONfn.stringify(testObj);
window.localStorage.setItem("netburnerTest", testSave);
console.log("Netburner TestSave saved");
break;
case "testLoad":
if (!window.localStorage.getItem("netburnerTest")) {
console.log("No TestSave file to load");
} else {
var testSave = window.localStorage.getItem("netburnerTest");
testObj = JSONfn.parse(testSave);
console.log("TestSave loaded");
}
break;
case "testDelete":
if (!window.localStorage.getItem("netburnetTest")) {
console.log("No TestSave file to delete");
} else {
window.localStorage.removeItem("netburnerTest");
console.log("TestSave deleted");
}
break;
default:
post("Command not found");

65
utils/JSONReviver.js Normal file
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@ -0,0 +1,65 @@
/* Generic Reviver, toJSON, and fromJSON functions used for saving and loading objects */
// A generic "smart reviver" function.
// Looks for object values with a `ctor` property and
// a `data` property. If it finds them, and finds a matching
// constructor that has a `fromJSON` property on it, it hands
// off to that `fromJSON` fuunction, passing in the value.
function Reviver(key, value) {
var ctor;
if (typeof value === "object" &&
typeof value.ctor === "string" &&
typeof value.data !== "undefined") {
ctor = Reviver.constructors[value.ctor] || window[value.ctor];
if (typeof ctor === "function" &&
typeof ctor.fromJSON === "function") {
return ctor.fromJSON(value);
}
}
return value;
}
Reviver.constructors = {}; // A list of constructors the smart reviver should know about
// A generic "toJSON" function that creates the data expected
// by Reviver.
// `ctorName` The name of the constructor to use to revive it
// `obj` The object being serialized
// `keys` (Optional) Array of the properties to serialize,
// if not given then all of the objects "own" properties
// that don't have function values will be serialized.
// (Note: If you list a property in `keys`, it will be serialized
// regardless of whether it's an "own" property.)
// Returns: The structure (which will then be turned into a string
// as part of the JSON.stringify algorithm)
function Generic_toJSON(ctorName, obj, keys) {
var data, index, key;
if (!keys) {
keys = Object.keys(obj); // Only "own" properties are included
}
data = {};
for (index = 0; index < keys.length; ++index) {
key = keys[index];
data[key] = obj[key];
}
return {ctor: ctorName, data: data};
}
// A generic "fromJSON" function for use with Reviver: Just calls the
// constructor function with no arguments, then applies all of the
// key/value pairs from the raw data to the instance. Only useful for
// constructors that can be reasonably called without arguments!
// `ctor` The constructor to call
// `data` The data to apply
// Returns: The object
function Generic_fromJSON(ctor, data) {
var obj, name;
obj = new ctor();
for (name in data) {
obj[name] = data[name];
}
return obj;
}