diff --git a/.eslintrc b/.eslintrc
index 26b41068d5f717e22a3bc55c5ba8a1724dd8225d..e84964e0ca2f4eaf026d40562ffa8896fd589304 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -13,6 +13,7 @@
"AbstractTransaction": true,
"Transaction": true,
"IndexedDB": true,
- "IDBRequest": true
+ "IDBRequest": true,
+ "GeneratorFunction": true
}
}
diff --git a/gulpfile.js b/gulpfile.js
index 44cc463f09cdeb0ece2c4b89656c3cd95b3a1985..0e3e35cf826e63c5f4f32bbeb2d686d23def665c 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -119,10 +119,10 @@ gulp.task("build_jasmine_browser", function(){
});
-gulp.task("develop", ["build_jasmine_browser", "build"], function(){
+gulp.task("develop", ["build_jasmine_browser", "test", "build"], function(){
gulp.watch(files.test, ["build_jasmine_browser"]);
- // gulp.watch(files.test, ["test"]);
+ gulp.watch(files.test, ["test"]);
gulp.watch(files.test, ["build"]);
return gulp.src("build/jasmine_browser.js")
diff --git a/src/OperationStore.js b/src/OperationStore.js
index 956734f9467485a0084d68cd2a8464598a896d04..7d77f1a3c0d9d5bac2ec176b32382f7758159eeb 100644
--- a/src/OperationStore.js
+++ b/src/OperationStore.js
@@ -22,8 +22,6 @@ type Listener = {
missing : number // number of operations that are missing
}
-type GeneratorFunction = Function;
-
type Id = [string, number];
class AbstractOperationStore { //eslint-disable-line no-unused-vars
@@ -105,7 +103,6 @@ class AbstractOperationStore { //eslint-disable-line no-unused-vars
}
}
});
-
}
// called by a transaction when an operation is added
operationAdded (op) {
diff --git a/src/OperationStores/IndexedDB.js b/src/OperationStores/IndexedDB.js
index 7b3a357bb70287584ff2990dd5775b10af321412..706dcced7d8f40bf82565b8fe09390758a543829 100644
--- a/src/OperationStores/IndexedDB.js
+++ b/src/OperationStores/IndexedDB.js
@@ -18,8 +18,6 @@ type IDBOpenDBRequest = Function;
declare var indexedDB : Object;
-declare var setTimeout : Function;
-
var IndexedDB = (function(){ //eslint-disable-line no-unused-vars
class Transaction extends AbstractTransaction { //eslint-disable-line
transaction: IDBTransaction;
@@ -36,7 +34,7 @@ var IndexedDB = (function(){ //eslint-disable-line no-unused-vars
}
*setOperation (op) {
yield this.os.put(op);
- this.buffer[JSON.stringify(op.uid)] = op;
+ this.buffer[JSON.stringify(op.id)] = op;
return op;
}
*getOperation (id) {
@@ -112,59 +110,77 @@ var IndexedDB = (function(){ //eslint-disable-line no-unused-vars
whenReadyListeners: Array<Function>;
constructor (namespace : string) {
super();
- this.whenReadyListeners = [];
this.namespace = namespace;
- this.ready = false;
-
- var req = indexedDB.open(namespace, 2); //eslint-disable-line no-undef
- req.onerror = function(){
- throw new Error("Couldn't open the IndexedDB database!");
- };
- req.onsuccess = (event)=>{
- this.db = event.target.result;
- this.whenReadyListeners.forEach(function(f){
- setTimeout(f, 0);
- });
- this.whenReadyListeners = null;
- this.ready = true;
+ this.transactionQueue = {
+ queue: [],
+ onRequest: null
};
- req.onupgradeneeded = function(event){
- var db = event.target.result;
- db.createObjectStore("OperationStore", {keyPath: "id"});
- db.createObjectStore("StateVector", {keyPath: "user"});
- };
- }
- whenReady (f : Function) {
- if (this.ready){
- setTimeout(f, 0);
- } else {
- this.whenReadyListeners.push(f);
- }
- }
- requestTransaction (makeGen : Function) {
- this.whenReady(()=>{
- var transaction = new Transaction(this);
- var gen = makeGen.apply(transaction);
-
- function handle(res : any){
- var request : any = res.value;
- if (res.done){
- return;
- } else if (request.constructor === IDBRequest
- || request.constructor === IDBCursor
- || request.constructor === IDBOpenDBRequest) {
- request.onsuccess = function(){
- handle(gen.next(request.result));
- };
- request.onerror = function(err){
- gen.throw(err);
- };
+
+ var store = this;
+
+ var tGen = (function *transactionGen(){
+ store.db = yield indexedDB.open(namespace, 3);
+ var transactionQueue = store.transactionQueue;
+
+ var transaction = null;
+ var cont = true;
+ while (cont) {
+ var request = yield transactionQueue;
+ transaction = new Transaction(store);
+
+ yield* request.call(transaction);/*
+ while (transactionQueue.queue.length > 0) {
+ yield* transactionQueue.queue.shift().call(transaction);
+ }*/
+ }
+ })();
+
+ function handleTransactions(t){ //eslint-disable-line no-unused-vars
+ var request = t.value;
+ if (t.done){
+ return;
+ } else if (request.constructor === IDBRequest
+ || request.constructor === IDBCursor ) {
+ request.onsuccess = function(){
+ handleTransactions(tGen.next(request.result));
+ };
+ request.onerror = function(err){
+ tGen.throw(err);
+ };
+ } else if (request === store.transactionQueue) {
+ if (request.queue.length > 0){
+ handleTransactions(tGen.next(request.queue.shift()));
} else {
- gen.throw("You can not yield this type!");
+ request.onRequest = function(){
+ request.onRequest = null;
+ handleTransactions(tGen.next(request.queue.shift()));
+ };
}
+ } else if ( request.constructor === IDBOpenDBRequest ) {
+ request.onsuccess = function(event){
+ var db = event.target.result;
+ handleTransactions(tGen.next(db));
+ };
+ request.onerror = function(){
+ tGen.throw("Couldn't open IndexedDB database!");
+ };
+ request.onupgradeneeded = function(event){
+ var db = event.target.result;
+ db.createObjectStore("OperationStore", {keyPath: "id"});
+ db.createObjectStore("StateVector", {keyPath: "user"});
+ };
+ } else {
+ tGen.throw("You can not yield this type!");
}
- handle(gen.next());
- });
+ }
+ handleTransactions(tGen.next());
+
+ }
+ requestTransaction (makeGen : Function) {
+ this.transactionQueue.queue.push(makeGen);
+ if (this.transactionQueue.onRequest != null) {
+ this.transactionQueue.onRequest();
+ }
}
*removeDatabase () {
this.db.close();
diff --git a/src/OperationStores/IndexedDB.spec.js b/src/OperationStores/IndexedDB.spec.js
index 0f0513383875496dfc0a253349909f680b1d5ed3..b3f875f9febee94767f980a49669823a7f87a1d8 100644
--- a/src/OperationStores/IndexedDB.spec.js
+++ b/src/OperationStores/IndexedDB.spec.js
@@ -2,6 +2,7 @@
/*eslint-env browser,jasmine */
if(typeof window !== "undefined"){
+ jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000;
describe("IndexedDB", function() {
var ob = new IndexedDB("Test");
@@ -43,7 +44,7 @@ if(typeof window !== "undefined"){
it("yield throws if request is unknown", function(done){
ob.requestTransaction(function*(){
try {
- yield this.getOperations(["u1", 0]);
+ yield* this.setOperation();
} catch (e) {
expect(true).toEqual(true);
done();
diff --git a/y.js b/y.js
index 182b5dbb397ae5ae018e0aed46991e7a890fcc08..a471e1adea6854e7b92dadf7e02d2fc8a2e223d5 100644
--- a/y.js
+++ b/y.js
@@ -1,2 +1,2 @@
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t(e,r)}):new Promise(function(n){n(t(e,r))});return n=a["catch"](o),a}"object"==typeof process&&process.domain&&(t=process.domain.bind(t));var n,a=t.bind(e,"next"),i=t.bind(e,"throw"),o=t.bind(e,"return");this._invoke=r}function c(e,t,n){var a=m;return function(i,o){if(a===k)throw new Error("Generator is already running");if(a===R)return d();for(;;){var s=n.delegate;if(s){if("return"===i||"throw"===i&&s.iterator[i]===y){n.delegate=null;var u=s.iterator["return"];if(u){var c=r(u,s.iterator,o);if("throw"===c.type){i="throw",o=c.arg;continue}}if("return"===i)continue}var c=r(s.iterator[i],s.iterator,o);if("throw"===c.type){n.delegate=null,i="throw",o=c.arg;continue}i="next",o=y;var l=c.arg;if(!l.done)return a=w,l;n[s.resultName]=l.value,n.next=s.nextLoc,n.delegate=null}if("next"===i)a===w?n.sent=o:delete n.sent;else if("throw"===i){if(a===m)throw a=R,o;n.dispatchException(o)&&(i="next",o=y)}else"return"===i&&n.abrupt("return",o);a=k;var c=r(e,t,n);if("normal"===c.type){a=n.done?R:w;var 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diff --git a/y.js.map b/y.js.map
index 543762cef0b810e2ae9968b8bffa43a2bc0d9ac6..f2616e790e15fdbfd6676a3d7b701450fb3bcffe 100644
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* Copyright (c) 2014, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * https://raw.github.com/facebook/regenerator/master/LICENSE file. An\n * additional grant of patent rights can be found in the PATENTS file in\n * the same directory.\n */\n\n!(function(global) {\n \"use strict\";\n\n var hasOwn = Object.prototype.hasOwnProperty;\n var undefined; // More compressible than void 0.\n var iteratorSymbol =\n typeof Symbol === \"function\" && Symbol.iterator || \"@@iterator\";\n\n var inModule = typeof module === \"object\";\n var runtime = global.regeneratorRuntime;\n if (runtime) {\n if (inModule) {\n // If regeneratorRuntime is defined globally and we're in a module,\n // make the exports object identical to regeneratorRuntime.\n module.exports = runtime;\n }\n // Don't bother evaluating the rest of this file if the runtime was\n // already defined globally.\n return;\n }\n\n // Define the runtime globally (as expected by generated code) as either\n // module.exports (if we're in a module) or a new, empty object.\n runtime = global.regeneratorRuntime = inModule ? module.exports : {};\n\n function wrap(innerFn, outerFn, self, tryLocsList) {\n // If outerFn provided, then outerFn.prototype instanceof Generator.\n var generator = Object.create((outerFn || Generator).prototype);\n\n generator._invoke = makeInvokeMethod(\n innerFn, self || null,\n new Context(tryLocsList || [])\n );\n\n return generator;\n }\n runtime.wrap = wrap;\n\n // Try/catch helper to minimize deoptimizations. Returns a completion\n // record like context.tryEntries[i].completion. This interface could\n // have been (and was previously) designed to take a closure to be\n // invoked without arguments, but in all the cases we care about we\n // already have an existing method we want to call, so there's no need\n // to create a new function object. We can even get away with assuming\n // the method takes exactly one argument, since that happens to be true\n // in every case, so we don't have to touch the arguments object. The\n // only additional allocation required is the completion record, which\n // has a stable shape and so hopefully should be cheap to allocate.\n function tryCatch(fn, obj, arg) {\n try {\n return { type: \"normal\", arg: fn.call(obj, arg) };\n } catch (err) {\n return { type: \"throw\", arg: err };\n }\n }\n\n var GenStateSuspendedStart = \"suspendedStart\";\n var GenStateSuspendedYield = \"suspendedYield\";\n var GenStateExecuting = \"executing\";\n var GenStateCompleted = \"completed\";\n\n // Returning this object from the innerFn has the same effect as\n // breaking out of the dispatch switch statement.\n var ContinueSentinel = {};\n\n // Dummy constructor functions that we use as the .constructor and\n // .constructor.prototype properties for functions that return Generator\n // objects. For full spec compliance, you may wish to configure your\n // minifier not to mangle the names of these two functions.\n function Generator() {}\n function GeneratorFunction() {}\n function GeneratorFunctionPrototype() {}\n\n var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype;\n GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n GeneratorFunctionPrototype.constructor = GeneratorFunction;\n GeneratorFunction.displayName = \"GeneratorFunction\";\n\n // Helper for defining the .next, .throw, and .return methods of the\n // Iterator interface in terms of a single ._invoke method.\n function defineIteratorMethods(prototype) {\n [\"next\", \"throw\", \"return\"].forEach(function(method) {\n prototype[method] = function(arg) {\n return this._invoke(method, arg);\n };\n });\n }\n\n runtime.isGeneratorFunction = function(genFun) {\n var ctor = typeof genFun === \"function\" && genFun.constructor;\n return ctor\n ? ctor === GeneratorFunction ||\n // For the native GeneratorFunction constructor, the best we can\n // do is to check its .name property.\n (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n : false;\n };\n\n runtime.mark = function(genFun) {\n genFun.__proto__ = GeneratorFunctionPrototype;\n genFun.prototype = Object.create(Gp);\n return genFun;\n };\n\n // Within the body of any async function, `await x` is transformed to\n // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n // `value instanceof AwaitArgument` to determine if the yielded value is\n // meant to be awaited. Some may consider the name of this method too\n // cutesy, but they are curmudgeons.\n runtime.awrap = function(arg) {\n return new AwaitArgument(arg);\n };\n\n function AwaitArgument(arg) {\n this.arg = arg;\n }\n\n function AsyncIterator(generator) {\n // This invoke function is written in a style that assumes some\n // calling function (or Promise) will handle exceptions.\n function invoke(method, arg) {\n var result = generator[method](arg);\n var value = result.value;\n return value instanceof AwaitArgument\n ? Promise.resolve(value.arg).then(invokeNext, invokeThrow)\n : Promise.resolve(value).then(function(unwrapped) {\n result.value = unwrapped;\n return result;\n }, invokeThrow);\n }\n\n if (typeof process === \"object\" && process.domain) {\n invoke = process.domain.bind(invoke);\n }\n\n var invokeNext = invoke.bind(generator, \"next\");\n var invokeThrow = invoke.bind(generator, \"throw\");\n var invokeReturn = invoke.bind(generator, \"return\");\n var previousPromise;\n\n function enqueue(method, arg) {\n var enqueueResult =\n // If enqueue has been called before, then we want to wait until\n // all previous Promises have been resolved before calling invoke,\n // so that results are always delivered in the correct order. If\n // enqueue has not been called before, then it is important to\n // call invoke immediately, without waiting on a callback to fire,\n // so that the async generator function has the opportunity to do\n // any necessary setup in a predictable way. This predictability\n // is why the Promise constructor synchronously invokes its\n // executor callback, and why async functions synchronously\n // execute code before the first await. Since we implement simple\n // async functions in terms of async generators, it is especially\n // important to get this right, even though it requires care.\n previousPromise ? previousPromise.then(function() {\n return invoke(method, arg);\n }) : new Promise(function(resolve) {\n resolve(invoke(method, arg));\n });\n\n // Avoid propagating enqueueResult failures to Promises returned by\n // later invocations of the iterator, and call generator.return() to\n // allow the generator a chance to clean up.\n previousPromise = enqueueResult[\"catch\"](invokeReturn);\n\n return enqueueResult;\n }\n\n // Define the unified helper method that is used to implement .next,\n // .throw, and .return (see defineIteratorMethods).\n this._invoke = enqueue;\n }\n\n defineIteratorMethods(AsyncIterator.prototype);\n\n // Note that simple async functions are implemented on top of\n // AsyncIterator objects; they just return a Promise for the value of\n // the final result produced by the iterator.\n runtime.async = function(innerFn, outerFn, self, tryLocsList) {\n var iter = new AsyncIterator(\n wrap(innerFn, outerFn, self, tryLocsList)\n );\n\n return runtime.isGeneratorFunction(outerFn)\n ? iter // If outerFn is a generator, return the full iterator.\n : iter.next().then(function(result) {\n return result.done ? result.value : iter.next();\n });\n };\n\n function makeInvokeMethod(innerFn, self, context) {\n var state = GenStateSuspendedStart;\n\n return function invoke(method, arg) {\n if (state === GenStateExecuting) {\n throw new Error(\"Generator is already running\");\n }\n\n if (state === GenStateCompleted) {\n // Be forgiving, per 25.3.3.3.3 of the spec:\n // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n return doneResult();\n }\n\n while (true) {\n var delegate = context.delegate;\n if (delegate) {\n if (method === \"return\" ||\n (method === \"throw\" && delegate.iterator[method] === undefined)) {\n // A return or throw (when the delegate iterator has no throw\n // method) always terminates the yield* loop.\n context.delegate = null;\n\n // If the delegate iterator has a return method, give it a\n // chance to clean up.\n var returnMethod = delegate.iterator[\"return\"];\n if (returnMethod) {\n var record = tryCatch(returnMethod, delegate.iterator, arg);\n if (record.type === \"throw\") {\n // If the return method threw an exception, let that\n // exception prevail over the original return or throw.\n method = \"throw\";\n arg = record.arg;\n continue;\n }\n }\n\n if (method === \"return\") {\n // Continue with the outer return, now that the delegate\n // iterator has been terminated.\n continue;\n }\n }\n\n var record = tryCatch(\n delegate.iterator[method],\n delegate.iterator,\n arg\n );\n\n if (record.type === \"throw\") {\n context.delegate = null;\n\n // Like returning generator.throw(uncaught), but without the\n // overhead of an extra function call.\n method = \"throw\";\n arg = record.arg;\n continue;\n }\n\n // Delegate generator ran and handled its own exceptions so\n // regardless of what the method was, we continue as if it is\n // \"next\" with an undefined arg.\n method = \"next\";\n arg = undefined;\n\n var info = record.arg;\n if (info.done) {\n context[delegate.resultName] = info.value;\n context.next = delegate.nextLoc;\n } else {\n state = GenStateSuspendedYield;\n return info;\n }\n\n context.delegate = null;\n }\n\n if (method === \"next\") {\n if (state === GenStateSuspendedYield) {\n context.sent = arg;\n } else {\n delete context.sent;\n }\n\n } else if (method === \"throw\") {\n if (state === GenStateSuspendedStart) {\n state = GenStateCompleted;\n throw arg;\n }\n\n if (context.dispatchException(arg)) {\n // If the dispatched exception was caught by a catch block,\n // then let that catch block handle the exception normally.\n method = \"next\";\n arg = undefined;\n }\n\n } else if (method === \"return\") {\n context.abrupt(\"return\", arg);\n }\n\n state = GenStateExecuting;\n\n var record = tryCatch(innerFn, self, context);\n if (record.type === \"normal\") {\n // If an exception is thrown from innerFn, we leave state ===\n // GenStateExecuting and loop back for another invocation.\n state = context.done\n ? GenStateCompleted\n : GenStateSuspendedYield;\n\n var info = {\n value: record.arg,\n done: context.done\n };\n\n if (record.arg === ContinueSentinel) {\n if (context.delegate && method === \"next\") {\n // Deliberately forget the last sent value so that we don't\n // accidentally pass it on to the delegate.\n arg = undefined;\n }\n } else {\n return info;\n }\n\n } else if (record.type === \"throw\") {\n state = GenStateCompleted;\n // Dispatch the exception by looping back around to the\n // context.dispatchException(arg) call above.\n method = \"throw\";\n arg = record.arg;\n }\n }\n };\n }\n\n // Define Generator.prototype.{next,throw,return} in terms of the\n // unified ._invoke helper method.\n defineIteratorMethods(Gp);\n\n Gp[iteratorSymbol] = function() {\n return this;\n };\n\n Gp.toString = function() {\n return \"[object Generator]\";\n };\n\n function pushTryEntry(locs) {\n var entry = { tryLoc: locs[0] };\n\n if (1 in locs) {\n entry.catchLoc = locs[1];\n }\n\n if (2 in locs) {\n entry.finallyLoc = locs[2];\n entry.afterLoc = locs[3];\n }\n\n this.tryEntries.push(entry);\n }\n\n function resetTryEntry(entry) {\n var record = entry.completion || {};\n record.type = \"normal\";\n delete record.arg;\n entry.completion = record;\n }\n\n function Context(tryLocsList) {\n // The root entry object (effectively a try statement without a catch\n // or a finally block) gives us a place to store values thrown from\n // locations where there is no enclosing try statement.\n this.tryEntries = [{ tryLoc: \"root\" }];\n tryLocsList.forEach(pushTryEntry, this);\n this.reset();\n }\n\n runtime.keys = function(object) {\n var keys = [];\n for (var key in object) {\n keys.push(key);\n }\n keys.reverse();\n\n // Rather than returning an object with a next method, we keep\n // things simple and return the next function itself.\n return function next() {\n while (keys.length) {\n var key = keys.pop();\n if (key in object) {\n next.value = key;\n next.done = false;\n return next;\n }\n }\n\n // To avoid creating an additional object, we just hang the .value\n // and .done properties off the next function object itself. This\n // also ensures that the minifier will not anonymize the function.\n next.done = true;\n return next;\n };\n };\n\n function values(iterable) {\n if (iterable) {\n var iteratorMethod = iterable[iteratorSymbol];\n if (iteratorMethod) {\n return iteratorMethod.call(iterable);\n }\n\n if (typeof iterable.next === \"function\") {\n return iterable;\n }\n\n if (!isNaN(iterable.length)) {\n var i = -1, next = function next() {\n while (++i < iterable.length) {\n if (hasOwn.call(iterable, i)) {\n next.value = iterable[i];\n next.done = false;\n return next;\n }\n }\n\n next.value = undefined;\n next.done = true;\n\n return next;\n };\n\n return next.next = next;\n }\n }\n\n // Return an iterator with no values.\n return { next: doneResult };\n }\n runtime.values = values;\n\n function doneResult() {\n return { value: undefined, done: true };\n }\n\n Context.prototype = {\n constructor: Context,\n\n reset: function() {\n this.prev = 0;\n this.next = 0;\n this.sent = undefined;\n this.done = false;\n this.delegate = null;\n\n this.tryEntries.forEach(resetTryEntry);\n\n // Pre-initialize at least 20 temporary variables to enable hidden\n // class optimizations for simple generators.\n for (var tempIndex = 0, tempName;\n hasOwn.call(this, tempName = \"t\" + tempIndex) || tempIndex < 20;\n ++tempIndex) {\n this[tempName] = null;\n }\n },\n\n stop: function() {\n this.done = true;\n\n var rootEntry = this.tryEntries[0];\n var rootRecord = rootEntry.completion;\n if (rootRecord.type === \"throw\") {\n throw rootRecord.arg;\n }\n\n return this.rval;\n },\n\n dispatchException: function(exception) {\n if (this.done) {\n throw exception;\n }\n\n var context = this;\n function handle(loc, caught) {\n record.type = \"throw\";\n record.arg = exception;\n context.next = loc;\n return !!caught;\n }\n\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n var record = entry.completion;\n\n if (entry.tryLoc === \"root\") {\n // Exception thrown outside of any try block that could handle\n // it, so set the completion value of the entire function to\n // throw the exception.\n return handle(\"end\");\n }\n\n if (entry.tryLoc <= this.prev) {\n var hasCatch = hasOwn.call(entry, \"catchLoc\");\n var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n if (hasCatch && hasFinally) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n } else if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else if (hasCatch) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n }\n\n } else if (hasFinally) {\n if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else {\n throw new Error(\"try statement without catch or finally\");\n }\n }\n }\n },\n\n abrupt: function(type, arg) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc <= this.prev &&\n hasOwn.call(entry, \"finallyLoc\") &&\n this.prev < entry.finallyLoc) {\n var finallyEntry = entry;\n break;\n }\n }\n\n if (finallyEntry &&\n (type === \"break\" ||\n type === \"continue\") &&\n finallyEntry.tryLoc <= arg &&\n arg <= finallyEntry.finallyLoc) {\n // Ignore the finally entry if control is not jumping to a\n // location outside the try/catch block.\n finallyEntry = null;\n }\n\n var record = finallyEntry ? finallyEntry.completion : {};\n record.type = type;\n record.arg = arg;\n\n if (finallyEntry) {\n this.next = finallyEntry.finallyLoc;\n } else {\n this.complete(record);\n }\n\n return ContinueSentinel;\n },\n\n complete: function(record, afterLoc) {\n if (record.type === \"throw\") {\n throw record.arg;\n }\n\n if (record.type === \"break\" ||\n record.type === \"continue\") {\n this.next = record.arg;\n } else if (record.type === \"return\") {\n this.rval = record.arg;\n this.next = \"end\";\n } else if (record.type === \"normal\" && afterLoc) {\n this.next = afterLoc;\n }\n },\n\n finish: function(finallyLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.finallyLoc === finallyLoc) {\n this.complete(entry.completion, entry.afterLoc);\n resetTryEntry(entry);\n return ContinueSentinel;\n }\n }\n },\n\n \"catch\": function(tryLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc === tryLoc) {\n var record = entry.completion;\n if (record.type === \"throw\") {\n var thrown = record.arg;\n resetTryEntry(entry);\n }\n return thrown;\n }\n }\n\n // The context.catch method must only be called with a location\n // argument that corresponds to a known catch block.\n throw new Error(\"illegal catch attempt\");\n },\n\n delegateYield: function(iterable, resultName, nextLoc) {\n this.delegate = {\n iterator: values(iterable),\n resultName: resultName,\n nextLoc: nextLoc\n };\n\n return ContinueSentinel;\n }\n };\n})(\n // Among the various tricks for obtaining a reference to the global\n // object, this seems to be the most reliable technique that does not\n // use indirect eval (which violates Content Security Policy).\n typeof global === \"object\" ? global :\n typeof window === \"object\" ? window :\n typeof self === \"object\" ? self : this\n);\n","/* @flow */\nclass AbstractTransaction { //eslint-disable-line no-unused-vars\n constructor (store : OperationStore) {\n this.store = store;\n }\n // Throws if operation is not expected.\n *addOperation (op) {\n var state = this.getState(op.id[0]);\n if (op.id[1] === state.clock){\n state.clock++;\n yield* this.setState(state);\n this.store.operationAdded(op);\n return true;\n } else {\n return false;\n }\n }\n}\n\ntype Listener = {\n f : GeneratorFunction, // is called when all operations are available\n missing : number // number of operations that are missing\n}\n\ntype GeneratorFunction = Function;\n\ntype Id = [string, number];\n\nclass AbstractOperationStore { //eslint-disable-line no-unused-vars\n constructor () {\n // E.g. this.listenersById[id] : Array<Listener>\n this.listenersById = {};\n // Execute the next time a transaction is requested\n this.listenersByIdExecuteNow = [];\n // A transaction is requested\n this.listenersByIdRequestPending = false;\n /* To make things more clear, the following naming conventions:\n * ls : we put this.listenersById on ls\n * l : Array<Listener>\n * id : Id (can't use as property name)\n * sid : String (converted from id via JSON.stringify\n so we can use it as a property name)\n\n Always remember to first overwrite over\n a property before you iterate over it!\n */\n }\n // f is called as soon as every operation requested is available.\n // Note that Transaction can (and should) buffer requests.\n whenOperationsExist (ids : Array<Id>, f : GeneratorFunction, args : Array<any>) {\n if (ids.length > 0) {\n let listener : Listener = {\n f: f,\n args: args || [],\n missing: ids.length\n };\n\n for (let id of ids) {\n let sid = JSON.stringify(id);\n let l = this.listenersById[sid];\n if (l == null){\n l = [];\n this.listenersById[sid] = l;\n }\n l.push(listener);\n }\n } else {\n this.listenersByIdExecuteNow.push({\n f: f,\n args: args || []\n });\n }\n\n if (this.listenersByIdRequestPending){\n return;\n }\n\n this.listenersByIdRequestPending = true;\n var store = this;\n\n this.requestTransaction(function*(){\n var exeNow = store.listenersByIdExecuteNow;\n store.listenersByIdExecuteNow = [];\n\n var ls = store.listenersById;\n store.listenersById = {};\n\n store.listenersByIdRequestPending = false; \n\n for (let listener of exeNow) {\n yield* listener.f.apply(this, listener.args);\n }\n\n for (var sid in ls){\n var l = ls[sid];\n var id = JSON.parse(sid);\n if ((yield* this.getOperation(id)) == null){\n store.listenersById[sid] = l;\n } else {\n for (let listener of l) {\n if (--listener.missing === 0){\n yield* listener.f.apply(this, listener.args);\n }\n }\n }\n }\n });\n\n }\n // called by a transaction when an operation is added\n operationAdded (op) {\n var l = this.listenersById[op.id];\n if (l != null) {\n for (var listener of l){\n if (--listener.missing === 0){\n this.whenOperationsExist([], listener.f, listener.args);\n }\n } }\n\n }\n}\n","/* @flow */\n\n// Op is anything that we could get from the OperationStore.\ntype Op = Object;\n\nvar Struct = {\n Operation: { //eslint-disable-line no-unused-vars\n create: function*(op : Op, user : string) : Struct.Operation {\n var state = yield* this.getState(user);\n op.id = [user, state.clock];\n return yield* this.addOperation(op);\n }\n },\n Insert: {\n create: function*( op : Op,\n user : string,\n left : Struct.Insert,\n right : Struct.Insert) : Struct.Insert {\n op.left = left ? left.id : null;\n op.origin = op.left;\n op.right = right ? right.id : null;\n op.type = \"Insert\";\n yield* Struct.Operation.create(op, user);\n\n if (left != null) {\n left.right = op.id;\n yield* this.setOperation(left);\n }\n if (right != null) {\n right.left = op.id;\n yield* this.setOperation(right);\n }\n return op;\n },\n requiredOps: function(op, ids){\n ids.push(op.left);\n ids.push(op.right);\n return ids;\n },\n execute: function*(op){\n return op;\n }\n }\n};\n","\ntype State = {\n user: string,\n clock: number\n};\n\ntype StateVector = Array<State>;\n\ntype StateSet = Object;\n\ntype IDBTransaction = Function;\ntype IDBObjectStore = Function;\ntype IDBRequest = Function;\ntype IDBCursor = Function;\ntype IDBKeyRange = Function;\n\ntype IDBOpenDBRequest = Function;\n\ndeclare var indexedDB : Object;\n\ndeclare var setTimeout : Function;\n\nvar IndexedDB = (function(){ //eslint-disable-line no-unused-vars\n class Transaction extends AbstractTransaction { //eslint-disable-line\n transaction: IDBTransaction;\n sv: IDBObjectStore;\n os: IDBObjectStore;\n store: OperationStore;\n\n constructor (store : OperationStore) {\n super(store);\n this.transaction = store.db.transaction([\"OperationStore\", \"StateVector\"], \"readwrite\");\n this.sv = this.transaction.objectStore(\"StateVector\");\n this.os = this.transaction.objectStore(\"OperationStore\");\n this.buffer = {};\n }\n *setOperation (op) {\n yield this.os.put(op);\n this.buffer[JSON.stringify(op.uid)] = op;\n return op;\n }\n *getOperation (id) {\n var op = this.buffer[JSON.stringify(id)];\n if (op == null) {\n op = yield this.os.get(id);\n this.buffer[JSON.stringify(id)] = op;\n }\n return op;\n }\n *removeOperation (id) {\n this.buffer[JSON.stringify(id)] = null;\n return yield this.os.delete(id);\n }\n *setState (state : State) : State {\n return yield this.sv.put(state);\n }\n *getState (user : string) : State {\n var state;\n if ((state = yield this.sv.get(user)) != null){\n return state;\n } else {\n return {\n user: user,\n clock: 0\n };\n }\n }\n *getStateVector () : StateVector {\n var stateVector = [];\n var cursorResult = this.sv.openCursor();\n var cursor;\n while ((cursor = yield cursorResult) != null) {\n stateVector.push(cursor.value);\n cursor.continue();\n }\n return stateVector;\n }\n *getStateSet () : StateSet {\n var sv : StateVector = yield* this.getStateVector();\n var ss : StateSet = {};\n for (var state of sv){\n ss[state.user] = state.clock;\n }\n return ss;\n }\n\n *getOperations (startSS : StateSet) {\n if (startSS == null){\n startSS = {};\n }\n var ops = [];\n\n var endSV : StateVector = yield* this.getStateVector();\n for (var endState of endSV) {\n var user = endState.user;\n var startPos = startSS[user] || 0;\n var endPos = endState.clock;\n var range = IDBKeyRange.bound([user, startPos], [user, endPos]);\n var cursorResult = this.os.openCursor(range);\n var cursor;\n while ((cursor = yield cursorResult) != null) {\n ops.push(cursor.value);\n cursor.continue();\n }\n }\n return ops;\n }\n }\n class OperationStore extends AbstractOperationStore { //eslint-disable-line no-undef\n namespace: string;\n ready: Promise;\n whenReadyListeners: Array<Function>;\n constructor (namespace : string) {\n super();\n this.whenReadyListeners = [];\n this.namespace = namespace;\n this.ready = false;\n\n var req = indexedDB.open(namespace, 2); //eslint-disable-line no-undef\n req.onerror = function(){\n throw new Error(\"Couldn't open the IndexedDB database!\");\n };\n req.onsuccess = (event)=>{\n this.db = event.target.result;\n this.whenReadyListeners.forEach(function(f){\n setTimeout(f, 0);\n });\n this.whenReadyListeners = null;\n this.ready = true;\n };\n req.onupgradeneeded = function(event){\n var db = event.target.result;\n db.createObjectStore(\"OperationStore\", {keyPath: \"id\"});\n db.createObjectStore(\"StateVector\", {keyPath: \"user\"});\n };\n }\n whenReady (f : Function) {\n if (this.ready){\n setTimeout(f, 0);\n } else {\n this.whenReadyListeners.push(f);\n }\n }\n requestTransaction (makeGen : Function) {\n this.whenReady(()=>{\n var transaction = new Transaction(this);\n var gen = makeGen.apply(transaction);\n\n function handle(res : any){\n var request : any = res.value;\n if (res.done){\n return;\n } else if (request.constructor === IDBRequest\n || request.constructor === IDBCursor\n || request.constructor === IDBOpenDBRequest) {\n request.onsuccess = function(){\n handle(gen.next(request.result));\n };\n request.onerror = function(err){\n gen.throw(err);\n };\n } else {\n gen.throw(\"You can not yield this type!\");\n }\n }\n handle(gen.next());\n });\n }\n *removeDatabase () {\n this.db.close();\n yield indexedDB.deleteDatabase(this.namespace);\n }\n }\n return OperationStore;\n})();\n"],"sourceRoot":"/source/"}
\ No newline at end of file
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* Copyright (c) 2014, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * https://raw.github.com/facebook/regenerator/master/LICENSE file. An\n * additional grant of patent rights can be found in the PATENTS file in\n * the same directory.\n */\n\n!(function(global) {\n \"use strict\";\n\n var hasOwn = Object.prototype.hasOwnProperty;\n var undefined; // More compressible than void 0.\n var iteratorSymbol =\n typeof Symbol === \"function\" && Symbol.iterator || \"@@iterator\";\n\n var inModule = typeof module === \"object\";\n var runtime = global.regeneratorRuntime;\n if (runtime) {\n if (inModule) {\n // If regeneratorRuntime is defined globally and we're in a module,\n // make the exports object identical to regeneratorRuntime.\n module.exports = runtime;\n }\n // Don't bother evaluating the rest of this file if the runtime was\n // already defined globally.\n return;\n }\n\n // Define the runtime globally (as expected by generated code) as either\n // module.exports (if we're in a module) or a new, empty object.\n runtime = global.regeneratorRuntime = inModule ? module.exports : {};\n\n function wrap(innerFn, outerFn, self, tryLocsList) {\n // If outerFn provided, then outerFn.prototype instanceof Generator.\n var generator = Object.create((outerFn || Generator).prototype);\n\n generator._invoke = makeInvokeMethod(\n innerFn, self || null,\n new Context(tryLocsList || [])\n );\n\n return generator;\n }\n runtime.wrap = wrap;\n\n // Try/catch helper to minimize deoptimizations. Returns a completion\n // record like context.tryEntries[i].completion. This interface could\n // have been (and was previously) designed to take a closure to be\n // invoked without arguments, but in all the cases we care about we\n // already have an existing method we want to call, so there's no need\n // to create a new function object. We can even get away with assuming\n // the method takes exactly one argument, since that happens to be true\n // in every case, so we don't have to touch the arguments object. The\n // only additional allocation required is the completion record, which\n // has a stable shape and so hopefully should be cheap to allocate.\n function tryCatch(fn, obj, arg) {\n try {\n return { type: \"normal\", arg: fn.call(obj, arg) };\n } catch (err) {\n return { type: \"throw\", arg: err };\n }\n }\n\n var GenStateSuspendedStart = \"suspendedStart\";\n var GenStateSuspendedYield = \"suspendedYield\";\n var GenStateExecuting = \"executing\";\n var GenStateCompleted = \"completed\";\n\n // Returning this object from the innerFn has the same effect as\n // breaking out of the dispatch switch statement.\n var ContinueSentinel = {};\n\n // Dummy constructor functions that we use as the .constructor and\n // .constructor.prototype properties for functions that return Generator\n // objects. For full spec compliance, you may wish to configure your\n // minifier not to mangle the names of these two functions.\n function Generator() {}\n function GeneratorFunction() {}\n function GeneratorFunctionPrototype() {}\n\n var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype;\n GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n GeneratorFunctionPrototype.constructor = GeneratorFunction;\n GeneratorFunction.displayName = \"GeneratorFunction\";\n\n // Helper for defining the .next, .throw, and .return methods of the\n // Iterator interface in terms of a single ._invoke method.\n function defineIteratorMethods(prototype) {\n [\"next\", \"throw\", \"return\"].forEach(function(method) {\n prototype[method] = function(arg) {\n return this._invoke(method, arg);\n };\n });\n }\n\n runtime.isGeneratorFunction = function(genFun) {\n var ctor = typeof genFun === \"function\" && genFun.constructor;\n return ctor\n ? ctor === GeneratorFunction ||\n // For the native GeneratorFunction constructor, the best we can\n // do is to check its .name property.\n (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n : false;\n };\n\n runtime.mark = function(genFun) {\n genFun.__proto__ = GeneratorFunctionPrototype;\n genFun.prototype = Object.create(Gp);\n return genFun;\n };\n\n // Within the body of any async function, `await x` is transformed to\n // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n // `value instanceof AwaitArgument` to determine if the yielded value is\n // meant to be awaited. Some may consider the name of this method too\n // cutesy, but they are curmudgeons.\n runtime.awrap = function(arg) {\n return new AwaitArgument(arg);\n };\n\n function AwaitArgument(arg) {\n this.arg = arg;\n }\n\n function AsyncIterator(generator) {\n // This invoke function is written in a style that assumes some\n // calling function (or Promise) will handle exceptions.\n function invoke(method, arg) {\n var result = generator[method](arg);\n var value = result.value;\n return value instanceof AwaitArgument\n ? Promise.resolve(value.arg).then(invokeNext, invokeThrow)\n : Promise.resolve(value).then(function(unwrapped) {\n result.value = unwrapped;\n return result;\n }, invokeThrow);\n }\n\n if (typeof process === \"object\" && process.domain) {\n invoke = process.domain.bind(invoke);\n }\n\n var invokeNext = invoke.bind(generator, \"next\");\n var invokeThrow = invoke.bind(generator, \"throw\");\n var invokeReturn = invoke.bind(generator, \"return\");\n var previousPromise;\n\n function enqueue(method, arg) {\n var enqueueResult =\n // If enqueue has been called before, then we want to wait until\n // all previous Promises have been resolved before calling invoke,\n // so that results are always delivered in the correct order. If\n // enqueue has not been called before, then it is important to\n // call invoke immediately, without waiting on a callback to fire,\n // so that the async generator function has the opportunity to do\n // any necessary setup in a predictable way. This predictability\n // is why the Promise constructor synchronously invokes its\n // executor callback, and why async functions synchronously\n // execute code before the first await. Since we implement simple\n // async functions in terms of async generators, it is especially\n // important to get this right, even though it requires care.\n previousPromise ? previousPromise.then(function() {\n return invoke(method, arg);\n }) : new Promise(function(resolve) {\n resolve(invoke(method, arg));\n });\n\n // Avoid propagating enqueueResult failures to Promises returned by\n // later invocations of the iterator, and call generator.return() to\n // allow the generator a chance to clean up.\n previousPromise = enqueueResult[\"catch\"](invokeReturn);\n\n return enqueueResult;\n }\n\n // Define the unified helper method that is used to implement .next,\n // .throw, and .return (see defineIteratorMethods).\n this._invoke = enqueue;\n }\n\n defineIteratorMethods(AsyncIterator.prototype);\n\n // Note that simple async functions are implemented on top of\n // AsyncIterator objects; they just return a Promise for the value of\n // the final result produced by the iterator.\n runtime.async = function(innerFn, outerFn, self, tryLocsList) {\n var iter = new AsyncIterator(\n wrap(innerFn, outerFn, self, tryLocsList)\n );\n\n return runtime.isGeneratorFunction(outerFn)\n ? iter // If outerFn is a generator, return the full iterator.\n : iter.next().then(function(result) {\n return result.done ? result.value : iter.next();\n });\n };\n\n function makeInvokeMethod(innerFn, self, context) {\n var state = GenStateSuspendedStart;\n\n return function invoke(method, arg) {\n if (state === GenStateExecuting) {\n throw new Error(\"Generator is already running\");\n }\n\n if (state === GenStateCompleted) {\n // Be forgiving, per 25.3.3.3.3 of the spec:\n // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n return doneResult();\n }\n\n while (true) {\n var delegate = context.delegate;\n if (delegate) {\n if (method === \"return\" ||\n (method === \"throw\" && delegate.iterator[method] === undefined)) {\n // A return or throw (when the delegate iterator has no throw\n // method) always terminates the yield* loop.\n context.delegate = null;\n\n // If the delegate iterator has a return method, give it a\n // chance to clean up.\n var returnMethod = delegate.iterator[\"return\"];\n if (returnMethod) {\n var record = tryCatch(returnMethod, delegate.iterator, arg);\n if (record.type === \"throw\") {\n // If the return method threw an exception, let that\n // exception prevail over the original return or throw.\n method = \"throw\";\n arg = record.arg;\n continue;\n }\n }\n\n if (method === \"return\") {\n // Continue with the outer return, now that the delegate\n // iterator has been terminated.\n continue;\n }\n }\n\n var record = tryCatch(\n delegate.iterator[method],\n delegate.iterator,\n arg\n );\n\n if (record.type === \"throw\") {\n context.delegate = null;\n\n // Like returning generator.throw(uncaught), but without the\n // overhead of an extra function call.\n method = \"throw\";\n arg = record.arg;\n continue;\n }\n\n // Delegate generator ran and handled its own exceptions so\n // regardless of what the method was, we continue as if it is\n // \"next\" with an undefined arg.\n method = \"next\";\n arg = undefined;\n\n var info = record.arg;\n if (info.done) {\n context[delegate.resultName] = info.value;\n context.next = delegate.nextLoc;\n } else {\n state = GenStateSuspendedYield;\n return info;\n }\n\n context.delegate = null;\n }\n\n if (method === \"next\") {\n if (state === GenStateSuspendedYield) {\n context.sent = arg;\n } else {\n delete context.sent;\n }\n\n } else if (method === \"throw\") {\n if (state === GenStateSuspendedStart) {\n state = GenStateCompleted;\n throw arg;\n }\n\n if (context.dispatchException(arg)) {\n // If the dispatched exception was caught by a catch block,\n // then let that catch block handle the exception normally.\n method = \"next\";\n arg = undefined;\n }\n\n } else if (method === \"return\") {\n context.abrupt(\"return\", arg);\n }\n\n state = GenStateExecuting;\n\n var record = tryCatch(innerFn, self, context);\n if (record.type === \"normal\") {\n // If an exception is thrown from innerFn, we leave state ===\n // GenStateExecuting and loop back for another invocation.\n state = context.done\n ? GenStateCompleted\n : GenStateSuspendedYield;\n\n var info = {\n value: record.arg,\n done: context.done\n };\n\n if (record.arg === ContinueSentinel) {\n if (context.delegate && method === \"next\") {\n // Deliberately forget the last sent value so that we don't\n // accidentally pass it on to the delegate.\n arg = undefined;\n }\n } else {\n return info;\n }\n\n } else if (record.type === \"throw\") {\n state = GenStateCompleted;\n // Dispatch the exception by looping back around to the\n // context.dispatchException(arg) call above.\n method = \"throw\";\n arg = record.arg;\n }\n }\n };\n }\n\n // Define Generator.prototype.{next,throw,return} in terms of the\n // unified ._invoke helper method.\n defineIteratorMethods(Gp);\n\n Gp[iteratorSymbol] = function() {\n return this;\n };\n\n Gp.toString = function() {\n return \"[object Generator]\";\n };\n\n function pushTryEntry(locs) {\n var entry = { tryLoc: locs[0] };\n\n if (1 in locs) {\n entry.catchLoc = locs[1];\n }\n\n if (2 in locs) {\n entry.finallyLoc = locs[2];\n entry.afterLoc = locs[3];\n }\n\n this.tryEntries.push(entry);\n }\n\n function resetTryEntry(entry) {\n var record = entry.completion || {};\n record.type = \"normal\";\n delete record.arg;\n entry.completion = record;\n }\n\n function Context(tryLocsList) {\n // The root entry object (effectively a try statement without a catch\n // or a finally block) gives us a place to store values thrown from\n // locations where there is no enclosing try statement.\n this.tryEntries = [{ tryLoc: \"root\" }];\n tryLocsList.forEach(pushTryEntry, this);\n this.reset();\n }\n\n runtime.keys = function(object) {\n var keys = [];\n for (var key in object) {\n keys.push(key);\n }\n keys.reverse();\n\n // Rather than returning an object with a next method, we keep\n // things simple and return the next function itself.\n return function next() {\n while (keys.length) {\n var key = keys.pop();\n if (key in object) {\n next.value = key;\n next.done = false;\n return next;\n }\n }\n\n // To avoid creating an additional object, we just hang the .value\n // and .done properties off the next function object itself. This\n // also ensures that the minifier will not anonymize the function.\n next.done = true;\n return next;\n };\n };\n\n function values(iterable) {\n if (iterable) {\n var iteratorMethod = iterable[iteratorSymbol];\n if (iteratorMethod) {\n return iteratorMethod.call(iterable);\n }\n\n if (typeof iterable.next === \"function\") {\n return iterable;\n }\n\n if (!isNaN(iterable.length)) {\n var i = -1, next = function next() {\n while (++i < iterable.length) {\n if (hasOwn.call(iterable, i)) {\n next.value = iterable[i];\n next.done = false;\n return next;\n }\n }\n\n next.value = undefined;\n next.done = true;\n\n return next;\n };\n\n return next.next = next;\n }\n }\n\n // Return an iterator with no values.\n return { next: doneResult };\n }\n runtime.values = values;\n\n function doneResult() {\n return { value: undefined, done: true };\n }\n\n Context.prototype = {\n constructor: Context,\n\n reset: function() {\n this.prev = 0;\n this.next = 0;\n this.sent = undefined;\n this.done = false;\n this.delegate = null;\n\n this.tryEntries.forEach(resetTryEntry);\n\n // Pre-initialize at least 20 temporary variables to enable hidden\n // class optimizations for simple generators.\n for (var tempIndex = 0, tempName;\n hasOwn.call(this, tempName = \"t\" + tempIndex) || tempIndex < 20;\n ++tempIndex) {\n this[tempName] = null;\n }\n },\n\n stop: function() {\n this.done = true;\n\n var rootEntry = this.tryEntries[0];\n var rootRecord = rootEntry.completion;\n if (rootRecord.type === \"throw\") {\n throw rootRecord.arg;\n }\n\n return this.rval;\n },\n\n dispatchException: function(exception) {\n if (this.done) {\n throw exception;\n }\n\n var context = this;\n function handle(loc, caught) {\n record.type = \"throw\";\n record.arg = exception;\n context.next = loc;\n return !!caught;\n }\n\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n var record = entry.completion;\n\n if (entry.tryLoc === \"root\") {\n // Exception thrown outside of any try block that could handle\n // it, so set the completion value of the entire function to\n // throw the exception.\n return handle(\"end\");\n }\n\n if (entry.tryLoc <= this.prev) {\n var hasCatch = hasOwn.call(entry, \"catchLoc\");\n var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n if (hasCatch && hasFinally) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n } else if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else if (hasCatch) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n }\n\n } else if (hasFinally) {\n if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else {\n throw new Error(\"try statement without catch or finally\");\n }\n }\n }\n },\n\n abrupt: function(type, arg) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc <= this.prev &&\n hasOwn.call(entry, \"finallyLoc\") &&\n this.prev < entry.finallyLoc) {\n var finallyEntry = entry;\n break;\n }\n }\n\n if (finallyEntry &&\n (type === \"break\" ||\n type === \"continue\") &&\n finallyEntry.tryLoc <= arg &&\n arg <= finallyEntry.finallyLoc) {\n // Ignore the finally entry if control is not jumping to a\n // location outside the try/catch block.\n finallyEntry = null;\n }\n\n var record = finallyEntry ? finallyEntry.completion : {};\n record.type = type;\n record.arg = arg;\n\n if (finallyEntry) {\n this.next = finallyEntry.finallyLoc;\n } else {\n this.complete(record);\n }\n\n return ContinueSentinel;\n },\n\n complete: function(record, afterLoc) {\n if (record.type === \"throw\") {\n throw record.arg;\n }\n\n if (record.type === \"break\" ||\n record.type === \"continue\") {\n this.next = record.arg;\n } else if (record.type === \"return\") {\n this.rval = record.arg;\n this.next = \"end\";\n } else if (record.type === \"normal\" && afterLoc) {\n this.next = afterLoc;\n }\n },\n\n finish: function(finallyLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.finallyLoc === finallyLoc) {\n this.complete(entry.completion, entry.afterLoc);\n resetTryEntry(entry);\n return ContinueSentinel;\n }\n }\n },\n\n \"catch\": function(tryLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc === tryLoc) {\n var record = entry.completion;\n if (record.type === \"throw\") {\n var thrown = record.arg;\n resetTryEntry(entry);\n }\n return thrown;\n }\n }\n\n // The context.catch method must only be called with a location\n // argument that corresponds to a known catch block.\n throw new Error(\"illegal catch attempt\");\n },\n\n delegateYield: function(iterable, resultName, nextLoc) {\n this.delegate = {\n iterator: values(iterable),\n resultName: resultName,\n nextLoc: nextLoc\n };\n\n return ContinueSentinel;\n }\n };\n})(\n // Among the various tricks for obtaining a reference to the global\n // object, this seems to be the most reliable technique that does not\n // use indirect eval (which violates Content Security Policy).\n typeof global === \"object\" ? global :\n typeof window === \"object\" ? window :\n typeof self === \"object\" ? self : this\n);\n","/* @flow */\nclass AbstractTransaction { //eslint-disable-line no-unused-vars\n constructor (store : OperationStore) {\n this.store = store;\n }\n // Throws if operation is not expected.\n *addOperation (op) {\n var state = this.getState(op.id[0]);\n if (op.id[1] === state.clock){\n state.clock++;\n yield* this.setState(state);\n this.store.operationAdded(op);\n return true;\n } else {\n return false;\n }\n }\n}\n\ntype Listener = {\n f : GeneratorFunction, // is called when all operations are available\n missing : number // number of operations that are missing\n}\n\ntype Id = [string, number];\n\nclass AbstractOperationStore { //eslint-disable-line no-unused-vars\n constructor () {\n // E.g. this.listenersById[id] : Array<Listener>\n this.listenersById = {};\n // Execute the next time a transaction is requested\n this.listenersByIdExecuteNow = [];\n // A transaction is requested\n this.listenersByIdRequestPending = false;\n /* To make things more clear, the following naming conventions:\n * ls : we put this.listenersById on ls\n * l : Array<Listener>\n * id : Id (can't use as property name)\n * sid : String (converted from id via JSON.stringify\n so we can use it as a property name)\n\n Always remember to first overwrite over\n a property before you iterate over it!\n */\n }\n // f is called as soon as every operation requested is available.\n // Note that Transaction can (and should) buffer requests.\n whenOperationsExist (ids : Array<Id>, f : GeneratorFunction, args : Array<any>) {\n if (ids.length > 0) {\n let listener : Listener = {\n f: f,\n args: args || [],\n missing: ids.length\n };\n\n for (let id of ids) {\n let sid = JSON.stringify(id);\n let l = this.listenersById[sid];\n if (l == null){\n l = [];\n this.listenersById[sid] = l;\n }\n l.push(listener);\n }\n } else {\n this.listenersByIdExecuteNow.push({\n f: f,\n args: args || []\n });\n }\n\n if (this.listenersByIdRequestPending){\n return;\n }\n\n this.listenersByIdRequestPending = true;\n var store = this;\n\n this.requestTransaction(function*(){\n var exeNow = store.listenersByIdExecuteNow;\n store.listenersByIdExecuteNow = [];\n\n var ls = store.listenersById;\n store.listenersById = {};\n\n store.listenersByIdRequestPending = false;\n\n for (let listener of exeNow) {\n yield* listener.f.apply(this, listener.args);\n }\n\n for (var sid in ls){\n var l = ls[sid];\n var id = JSON.parse(sid);\n if ((yield* this.getOperation(id)) == null){\n store.listenersById[sid] = l;\n } else {\n for (let listener of l) {\n if (--listener.missing === 0){\n yield* listener.f.apply(this, listener.args);\n }\n }\n }\n }\n });\n }\n // called by a transaction when an operation is added\n operationAdded (op) {\n var l = this.listenersById[op.id];\n if (l != null) {\n for (var listener of l){\n if (--listener.missing === 0){\n this.whenOperationsExist([], listener.f, listener.args);\n }\n }\n }\n }\n}\n","/* @flow */\n\n// Op is anything that we could get from the OperationStore.\ntype Op = Object;\n\nvar Struct = {\n Operation: { //eslint-disable-line no-unused-vars\n create: function*(op : Op, user : string) : Struct.Operation {\n var state = yield* this.getState(user);\n op.id = [user, state.clock];\n return yield* this.addOperation(op);\n }\n },\n Insert: {\n create: function*( op : Op,\n user : string,\n left : Struct.Insert,\n right : Struct.Insert) : Struct.Insert {\n op.left = left ? left.id : null;\n op.origin = op.left;\n op.right = right ? right.id : null;\n op.type = \"Insert\";\n yield* Struct.Operation.create(op, user);\n\n if (left != null) {\n left.right = op.id;\n yield* this.setOperation(left);\n }\n if (right != null) {\n right.left = op.id;\n yield* this.setOperation(right);\n }\n return op;\n },\n requiredOps: function(op, ids){\n ids.push(op.left);\n ids.push(op.right);\n return ids;\n },\n execute: function*(op){\n return op;\n }\n }\n};\n","\ntype State = {\n user: string,\n clock: number\n};\n\ntype StateVector = Array<State>;\n\ntype StateSet = Object;\n\ntype IDBTransaction = Function;\ntype IDBObjectStore = Function;\ntype IDBRequest = Function;\ntype IDBCursor = Function;\ntype IDBKeyRange = Function;\n\ntype IDBOpenDBRequest = Function;\n\ndeclare var indexedDB : Object;\n\ndeclare var setTimeout : Function;\n\nvar GeneratorFunction = (function*(){}).constructor;\n\nvar IndexedDB = (function(){ //eslint-disable-line no-unused-vars\n class Transaction extends AbstractTransaction { //eslint-disable-line\n transaction: IDBTransaction;\n sv: IDBObjectStore;\n os: IDBObjectStore;\n store: OperationStore;\n\n constructor (store : OperationStore) {\n super(store);\n this.transaction = store.db.transaction([\"OperationStore\", \"StateVector\"], \"readwrite\");\n this.sv = this.transaction.objectStore(\"StateVector\");\n this.os = this.transaction.objectStore(\"OperationStore\");\n this.buffer = {};\n }\n *setOperation (op) {\n yield this.os.put(op);\n this.buffer[JSON.stringify(op.id)] = op;\n return op;\n }\n *getOperation (id) {\n var op = this.buffer[JSON.stringify(id)];\n if (op == null) {\n op = yield this.os.get(id);\n this.buffer[JSON.stringify(id)] = op;\n }\n return op;\n }\n *removeOperation (id) {\n this.buffer[JSON.stringify(id)] = null;\n return yield this.os.delete(id);\n }\n *setState (state : State) : State {\n return yield this.sv.put(state);\n }\n *getState (user : string) : State {\n var state;\n if ((state = yield this.sv.get(user)) != null){\n return state;\n } else {\n return {\n user: user,\n clock: 0\n };\n }\n }\n *getStateVector () : StateVector {\n var stateVector = [];\n var cursorResult = this.sv.openCursor();\n var cursor;\n while ((cursor = yield cursorResult) != null) {\n stateVector.push(cursor.value);\n cursor.continue();\n }\n return stateVector;\n }\n *getStateSet () : StateSet {\n var sv : StateVector = yield* this.getStateVector();\n var ss : StateSet = {};\n for (var state of sv){\n ss[state.user] = state.clock;\n }\n return ss;\n }\n\n *getOperations (startSS : StateSet) {\n if (startSS == null){\n startSS = {};\n }\n var ops = [];\n\n var endSV : StateVector = yield* this.getStateVector();\n for (var endState of endSV) {\n var user = endState.user;\n var startPos = startSS[user] || 0;\n var endPos = endState.clock;\n var range = IDBKeyRange.bound([user, startPos], [user, endPos]);\n var cursorResult = this.os.openCursor(range);\n var cursor;\n while ((cursor = yield cursorResult) != null) {\n ops.push(cursor.value);\n cursor.continue();\n }\n }\n return ops;\n }\n }\n class OperationStore extends AbstractOperationStore { //eslint-disable-line no-undef\n namespace: string;\n ready: Promise;\n whenReadyListeners: Array<Function>;\n constructor (namespace : string) {\n super();\n this.namespace = namespace;\n this.transactionQueue = {\n queue: [],\n onRequest: null\n };\n\n var store = this;\n\n var tGen = (function *transactionGen(){\n store.db = yield indexedDB.open(namespace, 3);\n var transactionQueue = store.transactionQueue;\n\n var transaction = null;\n var cont = true;\n while (cont) {\n var request = yield transactionQueue;\n transaction = new Transaction(store);\n\n yield* request.call(transaction);/*\n while (transactionQueue.queue.length > 0) {\n yield* transactionQueue.queue.shift().call(transaction);\n }*/\n }\n })();\n\n function handleTransactions(t){ //eslint-disable-line no-unused-vars\n var request = t.value;\n if (t.done){\n } else if (request.constructor === IDBRequest\n || request.constructor === IDBCursor ) {\n request.onsuccess = function(){\n handleTransactions(tGen.next(request.result));\n };\n request.onerror = function(err){\n tGen.throw(err);\n };\n } else if (request === store.transactionQueue) {\n if (request.queue.length > 0){\n handleTransactions(tGen.next(request.queue.shift()));\n } else {\n request.onRequest = function(){\n request.onRequest = null;\n handleTransactions(tGen.next(request.queue.shift()));\n };\n }\n } else if ( request.constructor === IDBOpenDBRequest ) {\n request.onsuccess = function(event){\n var db = event.target.result;\n handleTransactions(tGen.next(db));\n };\n request.onerror = function(){\n tGen.throw(\"Couldn't open IndexedDB database!\");\n };\n request.onupgradeneeded = function(event){\n var db = event.target.result;\n db.createObjectStore(\"OperationStore\", {keyPath: \"id\"});\n db.createObjectStore(\"StateVector\", {keyPath: \"user\"});\n };\n } else {\n tGen.throw(\"You can not yield this type!\");\n }\n }\n handleTransactions(tGen.next());\n\n }\n requestTransaction (makeGen : Function) {\n this.transactionQueue.queue.push(makeGen);\n if (this.transactionQueue.onRequest != null) {\n this.transactionQueue.onRequest();\n }\n }\n *removeDatabase () {\n this.db.close();\n yield indexedDB.deleteDatabase(this.namespace);\n }\n }\n return OperationStore;\n})();\n"],"sourceRoot":"/source/"}
\ No newline at end of file