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kernel-runtime.js 15 KB

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  1. //jshint eqnull:true
  2. define(function () {
  3. "use strict";
  4. function defineMethod (klass, name, method) {
  5. Object.defineProperty(klass.prototype, name, {
  6. value: method,
  7. enumerable: false, configurable: true, writable: true
  8. });
  9. }
  10. DNUBrik.deps = ["selectors", "smalltalkGlobals", "manipulation", "classes"];
  11. function DNUBrik (brikz, st) {
  12. var selectorsBrik = brikz.selectors;
  13. var globals = brikz.smalltalkGlobals.globals;
  14. var installJSMethod = brikz.manipulation.installJSMethod;
  15. var nilAsClass = brikz.classes.nilAsClass;
  16. /* Method not implemented handlers */
  17. function makeDnuHandler (pair, targetClasses) {
  18. var jsSelector = pair.js;
  19. var fn = createHandler(pair.st);
  20. installJSMethod(nilAsClass.fn.prototype, jsSelector, fn);
  21. targetClasses.forEach(function (target) {
  22. installJSMethod(target.fn.prototype, jsSelector, fn);
  23. });
  24. }
  25. this.makeDnuHandler = makeDnuHandler;
  26. /* Dnu handler method */
  27. function createHandler (stSelector) {
  28. return function () {
  29. return globals.Message._selector_arguments_notUnderstoodBy_(
  30. stSelector, [].slice.call(arguments), this
  31. );
  32. };
  33. }
  34. selectorsBrik.selectorPairs.forEach(function (pair) {
  35. makeDnuHandler(pair, []);
  36. });
  37. }
  38. function ManipulationBrik (brikz, st) {
  39. function installJSMethod (obj, jsSelector, fn) {
  40. Object.defineProperty(obj, jsSelector, {
  41. value: fn,
  42. enumerable: false, configurable: true, writable: true
  43. });
  44. }
  45. function installMethod (method, klass) {
  46. installJSMethod(klass.fn.prototype, method.jsSelector, method.fn);
  47. }
  48. this.installMethod = installMethod;
  49. this.installJSMethod = installJSMethod;
  50. }
  51. RuntimeClassesBrik.deps = ["selectors", "dnu", "behaviors", "classes", "manipulation"];
  52. function RuntimeClassesBrik (brikz, st) {
  53. var selectors = brikz.selectors;
  54. var classes = brikz.behaviors.classes;
  55. var wireKlass = brikz.classes.wireKlass;
  56. var installMethod = brikz.manipulation.installMethod;
  57. var installJSMethod = brikz.manipulation.installJSMethod;
  58. var detachedRootClasses = [];
  59. function markClassDetachedRoot (klass) {
  60. klass.detachedRoot = true;
  61. detachedRootClasses = classes().filter(function (klass) {
  62. return klass.detachedRoot;
  63. });
  64. }
  65. this.detachedRootClasses = function () {
  66. return detachedRootClasses;
  67. };
  68. /* Initialize a class in its class hierarchy. Handle both classes and
  69. metaclasses. */
  70. function initClassAndMetaclass (klass) {
  71. initClass(klass);
  72. if (klass.a$cls && !klass.meta) {
  73. initClass(klass.a$cls);
  74. }
  75. }
  76. classes().forEach(function (traitOrClass) {
  77. if (!traitOrClass.trait) initClassAndMetaclass(traitOrClass);
  78. });
  79. st._classAdded = function (klass) {
  80. initClassAndMetaclass(klass);
  81. klass._enterOrganization();
  82. };
  83. st._traitAdded = function (trait) {
  84. trait._enterOrganization();
  85. };
  86. st._classRemoved = function (klass) {
  87. klass._leaveOrganization();
  88. };
  89. st._traitRemoved = function (trait) {
  90. trait._leaveOrganization();
  91. };
  92. function initClass (klass) {
  93. wireKlass(klass);
  94. if (klass.detachedRoot) {
  95. copySuperclass(klass);
  96. }
  97. installMethods(klass);
  98. }
  99. function copySuperclass (klass) {
  100. var myproto = klass.fn.prototype,
  101. superproto = klass.superclass.fn.prototype;
  102. selectors.selectorPairs.forEach(function (selectorPair) {
  103. var jsSelector = selectorPair.js;
  104. installJSMethod(myproto, jsSelector, superproto[jsSelector]);
  105. });
  106. }
  107. function installMethods (klass) {
  108. var methods = klass.methods;
  109. Object.keys(methods).forEach(function (selector) {
  110. installMethod(methods[selector], klass);
  111. });
  112. }
  113. /* Manually set the constructor of an existing Smalltalk klass, making it a detached root class. */
  114. st.setClassConstructor = this.setClassConstructor = function (klass, constructor) {
  115. markClassDetachedRoot(klass);
  116. klass.fn = constructor;
  117. initClass(klass);
  118. };
  119. }
  120. FrameBindingBrik.deps = ["smalltalkGlobals", "runtimeClasses"];
  121. function FrameBindingBrik (brikz, st) {
  122. var globals = brikz.smalltalkGlobals.globals;
  123. var setClassConstructor = brikz.runtimeClasses.setClassConstructor;
  124. setClassConstructor(globals.Number, Number);
  125. setClassConstructor(globals.BlockClosure, Function);
  126. setClassConstructor(globals.Boolean, Boolean);
  127. setClassConstructor(globals.Date, Date);
  128. setClassConstructor(globals.String, String);
  129. setClassConstructor(globals.Array, Array);
  130. setClassConstructor(globals.RegularExpression, RegExp);
  131. setClassConstructor(globals.Error, Error);
  132. setClassConstructor(globals.Promise, Promise);
  133. this.__init__ = function () {
  134. st.alias(globals.Array, "OrderedCollection");
  135. st.alias(globals.Date, "Time");
  136. }
  137. }
  138. RuntimeMethodsBrik.deps = ["manipulation", "dnu", "runtimeClasses"];
  139. function RuntimeMethodsBrik (brikz, st) {
  140. var installMethod = brikz.manipulation.installMethod;
  141. var installJSMethod = brikz.manipulation.installJSMethod;
  142. var makeDnuHandler = brikz.dnu.makeDnuHandler;
  143. var detachedRootClasses = brikz.runtimeClasses.detachedRootClasses;
  144. st._behaviorMethodAdded = function (method, klass) {
  145. installMethod(method, klass);
  146. propagateMethodChange(klass, method, klass);
  147. };
  148. st._selectorsAdded = function (newSelectors) {
  149. var targetClasses = detachedRootClasses();
  150. newSelectors.forEach(function (pair) {
  151. makeDnuHandler(pair, targetClasses);
  152. });
  153. };
  154. st._behaviorMethodRemoved = function (method, klass) {
  155. delete klass.fn.prototype[method.jsSelector];
  156. propagateMethodChange(klass, method, null);
  157. };
  158. function propagateMethodChange (klass, method, exclude) {
  159. var selector = method.selector;
  160. var jsSelector = method.jsSelector;
  161. st.traverseClassTree(klass, function (subclass, sentinel) {
  162. if (subclass !== exclude) {
  163. if (initMethodInClass(subclass, selector, jsSelector)) return sentinel;
  164. }
  165. });
  166. }
  167. function initMethodInClass (klass, selector, jsSelector) {
  168. if (klass.methods[selector]) return true;
  169. if (klass.detachedRoot) {
  170. installJSMethod(klass.fn.prototype, jsSelector, klass.superclass.fn.prototype[jsSelector]);
  171. }
  172. }
  173. }
  174. PrimitivesBrik.deps = ["smalltalkGlobals"];
  175. function PrimitivesBrik (brikz, st) {
  176. var globals = brikz.smalltalkGlobals.globals;
  177. var oid = 0;
  178. /* Unique ID number generator */
  179. st.nextId = function () {
  180. console.warn("$core.nextId() deprecated. Use your own unique counter.");
  181. oid += 1;
  182. return oid;
  183. };
  184. /* Converts a JavaScript object to valid Smalltalk Object */
  185. st.readJSObject = function (js) {
  186. if (js == null) return null;
  187. else if (Array.isArray(js)) return js.map(st.readJSObject);
  188. else if (js.constructor !== Object) return js;
  189. var pairs = [];
  190. for (var i in js) {
  191. pairs.push(i, st.readJSObject(js[i]));
  192. }
  193. return globals.Dictionary._newFromPairs_(pairs);
  194. };
  195. /* Boolean assertion */
  196. st.assert = function (shouldBeBoolean) {
  197. if (typeof shouldBeBoolean === "boolean") return shouldBeBoolean;
  198. else if (shouldBeBoolean != null && typeof shouldBeBoolean === "object") {
  199. shouldBeBoolean = shouldBeBoolean.valueOf();
  200. if (typeof shouldBeBoolean === "boolean") return shouldBeBoolean;
  201. }
  202. globals.NonBooleanReceiver._signalOn_(shouldBeBoolean);
  203. };
  204. // TODO remove
  205. st.globalJsVariables = [];
  206. }
  207. RuntimeBrik.deps = ["selectorConversion", "smalltalkGlobals", "runtimeClasses"];
  208. function RuntimeBrik (brikz, st) {
  209. var globals = brikz.smalltalkGlobals.globals;
  210. var setClassConstructor = brikz.runtimeClasses.setClassConstructor;
  211. function SmalltalkMethodContext (home, setup) {
  212. this.sendIdx = {};
  213. this.homeContext = home;
  214. this.setup = setup;
  215. }
  216. // Fallbacks
  217. SmalltalkMethodContext.prototype.supercall = false;
  218. SmalltalkMethodContext.prototype.locals = Object.freeze({});
  219. SmalltalkMethodContext.prototype.receiver = null;
  220. SmalltalkMethodContext.prototype.selector = null;
  221. SmalltalkMethodContext.prototype.lookupClass = null;
  222. SmalltalkMethodContext.prototype.outerContext = null;
  223. SmalltalkMethodContext.prototype.index = 0;
  224. defineMethod(SmalltalkMethodContext, "fill", function (receiver, selector, locals, lookupClass) {
  225. this.receiver = receiver;
  226. this.selector = selector;
  227. if (locals != null) this.locals = locals;
  228. this.lookupClass = lookupClass;
  229. if (this.homeContext) {
  230. this.homeContext.evaluatedSelector = selector;
  231. }
  232. });
  233. defineMethod(SmalltalkMethodContext, "fillBlock", function (locals, ctx, index) {
  234. if (locals != null) this.locals = locals;
  235. this.outerContext = ctx;
  236. if (index) this.index = index;
  237. });
  238. defineMethod(SmalltalkMethodContext, "init", function () {
  239. var frame = this;
  240. while (frame) {
  241. if (frame.init !== this.init) return frame.init();
  242. frame.setup(frame);
  243. frame = frame.homeContext;
  244. }
  245. });
  246. defineMethod(SmalltalkMethodContext, "method", function () {
  247. var method;
  248. var lookup = this.lookupClass || this.receiver.a$cls;
  249. while (!method && lookup) {
  250. method = lookup.methods[st.js2st(this.selector)];
  251. lookup = lookup.superclass;
  252. }
  253. return method;
  254. });
  255. setClassConstructor(globals.MethodContext, SmalltalkMethodContext);
  256. /* This is the current call context object.
  257. In Smalltalk code, it is accessible just by using 'thisContext' variable.
  258. In JS code, use api.getThisContext() (see below).
  259. */
  260. var thisContext = null;
  261. st.withContext = function (worker, setup) {
  262. return thisContext != null ?
  263. inContext(worker, setup) :
  264. inContextWithErrorHandling(worker, setup);
  265. };
  266. /*
  267. Runs worker function so that error handler is not set up
  268. if there isn't one. This is accomplished by unconditional
  269. wrapping inside a context of a simulated `nil seamlessDoIt` call,
  270. which then stops error handler setup (see st.withContext above).
  271. The effect is, $core.seamless(fn)'s exceptions are not
  272. handed into ST error handler and caller should process them.
  273. */
  274. st.seamless = function (worker) {
  275. return inContext(worker, function (ctx) {
  276. ctx.fill(null, "seamlessDoIt", {}, globals.UndefinedObject);
  277. });
  278. };
  279. function inContextWithErrorHandling (worker, setup) {
  280. try {
  281. return inContext(worker, setup);
  282. } catch (error) {
  283. globals.ErrorHandler._handleError_(error);
  284. thisContext = null;
  285. // Rethrow the error in any case.
  286. throw error;
  287. }
  288. }
  289. function inContext (worker, setup) {
  290. var oldContext = thisContext;
  291. thisContext = new SmalltalkMethodContext(thisContext, setup);
  292. var result = worker(thisContext);
  293. thisContext = oldContext;
  294. return result;
  295. }
  296. /* Handle thisContext pseudo variable */
  297. st.getThisContext = function () {
  298. if (thisContext) {
  299. thisContext.init();
  300. return thisContext;
  301. } else {
  302. return null;
  303. }
  304. };
  305. }
  306. MessageSendBrik.deps = ["smalltalkGlobals", "selectorConversion", "root"];
  307. function MessageSendBrik (brikz, st) {
  308. var globals = brikz.smalltalkGlobals.globals;
  309. var nilAsReceiver = brikz.root.nilAsReceiver;
  310. /* Send message programmatically. Used to implement #perform: & Co. */
  311. st.send2 = function (self, selector, args, klass) {
  312. if (self == null) {
  313. self = nilAsReceiver;
  314. }
  315. var method = klass ? klass.fn.prototype[st.st2js(selector)] : self.a$cls && self[st.st2js(selector)];
  316. return method != null ?
  317. method.apply(self, args || []) :
  318. globals.Message._selector_arguments_notUnderstoodBy_(
  319. selector, [].slice.call(args), self.a$cls ? self : wrapJavaScript(self)
  320. );
  321. };
  322. function wrapJavaScript (o) {
  323. return globals.JSObjectProxy._on_(o);
  324. }
  325. st.wrapJavaScript = wrapJavaScript;
  326. /* If the object property is a function, then call it, except if it starts with
  327. an uppercase character (we probably want to answer the function itself in this
  328. case and send it #new from Amber).
  329. */
  330. st.accessJavaScript = function accessJavaScript (self, propertyName, args) {
  331. var propertyValue = self[propertyName];
  332. if (typeof propertyValue === "function" && !/^[A-Z]/.test(propertyName)) {
  333. return propertyValue.apply(self, args || []);
  334. } else if (args.length === 0) {
  335. return propertyValue;
  336. } else {
  337. self[propertyName] = args[0];
  338. return self;
  339. }
  340. };
  341. }
  342. StartImageBrik.deps = ["smalltalkGlobals"];
  343. function StartImageBrik (brikz, st) {
  344. var globals = brikz.smalltalkGlobals.globals;
  345. this.run = function () {
  346. globals.AmberBootstrapInitialization._run();
  347. };
  348. }
  349. /* Making smalltalk that can run */
  350. function configureWithRuntime (brikz) {
  351. brikz.dnu = DNUBrik;
  352. brikz.manipulation = ManipulationBrik;
  353. brikz.runtimeClasses = RuntimeClassesBrik;
  354. brikz.frameBinding = FrameBindingBrik;
  355. brikz.runtimeMethods = RuntimeMethodsBrik;
  356. brikz.messageSend = MessageSendBrik;
  357. brikz.runtime = RuntimeBrik;
  358. brikz.primitives = PrimitivesBrik;
  359. brikz.startImage = StartImageBrik;
  360. brikz.rebuild();
  361. }
  362. return configureWithRuntime;
  363. });