diff options
Diffstat (limited to 'node_modules/scheduler/cjs/scheduler-unstable_mock.development.js')
-rw-r--r-- | node_modules/scheduler/cjs/scheduler-unstable_mock.development.js | 857 |
1 files changed, 857 insertions, 0 deletions
diff --git a/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js b/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js new file mode 100644 index 0000000..a143004 --- /dev/null +++ b/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js @@ -0,0 +1,857 @@ +/** @license React v0.19.1 + * scheduler-unstable_mock.development.js + * + * Copyright (c) Facebook, Inc. and its affiliates. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +'use strict'; + + + +if (process.env.NODE_ENV !== "production") { + (function() { +'use strict'; + +var enableSchedulerDebugging = false; +var enableProfiling = true; + +var currentTime = 0; +var scheduledCallback = null; +var scheduledTimeout = null; +var timeoutTime = -1; +var yieldedValues = null; +var expectedNumberOfYields = -1; +var didStop = false; +var isFlushing = false; +var needsPaint = false; +var shouldYieldForPaint = false; +function requestHostCallback(callback) { + scheduledCallback = callback; +} +function requestHostTimeout(callback, ms) { + scheduledTimeout = callback; + timeoutTime = currentTime + ms; +} +function cancelHostTimeout() { + scheduledTimeout = null; + timeoutTime = -1; +} +function shouldYieldToHost() { + if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) { + // We yielded at least as many values as expected. Stop flushing. + didStop = true; + return true; + } + + return false; +} +function getCurrentTime() { + return currentTime; +} +function forceFrameRate() {// No-op +} + +function unstable_flushNumberOfYields(count) { + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + var cb = scheduledCallback; + expectedNumberOfYields = count; + isFlushing = true; + + try { + var hasMoreWork = true; + + do { + hasMoreWork = cb(true, currentTime); + } while (hasMoreWork && !didStop); + + if (!hasMoreWork) { + scheduledCallback = null; + } + } finally { + expectedNumberOfYields = -1; + didStop = false; + isFlushing = false; + } + } +} +function unstable_flushUntilNextPaint() { + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + var cb = scheduledCallback; + shouldYieldForPaint = true; + needsPaint = false; + isFlushing = true; + + try { + var hasMoreWork = true; + + do { + hasMoreWork = cb(true, currentTime); + } while (hasMoreWork && !didStop); + + if (!hasMoreWork) { + scheduledCallback = null; + } + } finally { + shouldYieldForPaint = false; + didStop = false; + isFlushing = false; + } + } +} +function unstable_flushExpired() { + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + isFlushing = true; + + try { + var hasMoreWork = scheduledCallback(false, currentTime); + + if (!hasMoreWork) { + scheduledCallback = null; + } + } finally { + isFlushing = false; + } + } +} +function unstable_flushAllWithoutAsserting() { + // Returns false if no work was flushed. + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + var cb = scheduledCallback; + isFlushing = true; + + try { + var hasMoreWork = true; + + do { + hasMoreWork = cb(true, currentTime); + } while (hasMoreWork); + + if (!hasMoreWork) { + scheduledCallback = null; + } + + return true; + } finally { + isFlushing = false; + } + } else { + return false; + } +} +function unstable_clearYields() { + if (yieldedValues === null) { + return []; + } + + var values = yieldedValues; + yieldedValues = null; + return values; +} +function unstable_flushAll() { + if (yieldedValues !== null) { + throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.'); + } + + unstable_flushAllWithoutAsserting(); + + if (yieldedValues !== null) { + throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])'); + } +} +function unstable_yieldValue(value) { + if (yieldedValues === null) { + yieldedValues = [value]; + } else { + yieldedValues.push(value); + } +} +function unstable_advanceTime(ms) { + currentTime += ms; + + if (scheduledTimeout !== null && timeoutTime <= currentTime) { + scheduledTimeout(currentTime); + timeoutTime = -1; + scheduledTimeout = null; + } +} +function requestPaint() { + needsPaint = true; +} + +function push(heap, node) { + var index = heap.length; + heap.push(node); + siftUp(heap, node, index); +} +function peek(heap) { + var first = heap[0]; + return first === undefined ? null : first; +} +function pop(heap) { + var first = heap[0]; + + if (first !== undefined) { + var last = heap.pop(); + + if (last !== first) { + heap[0] = last; + siftDown(heap, last, 0); + } + + return first; + } else { + return null; + } +} + +function siftUp(heap, node, i) { + var index = i; + + while (true) { + var parentIndex = index - 1 >>> 1; + var parent = heap[parentIndex]; + + if (parent !== undefined && compare(parent, node) > 0) { + // The parent is larger. Swap positions. + heap[parentIndex] = node; + heap[index] = parent; + index = parentIndex; + } else { + // The parent is smaller. Exit. + return; + } + } +} + +function siftDown(heap, node, i) { + var index = i; + var length = heap.length; + + while (index < length) { + var leftIndex = (index + 1) * 2 - 1; + var left = heap[leftIndex]; + var rightIndex = leftIndex + 1; + var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. + + if (left !== undefined && compare(left, node) < 0) { + if (right !== undefined && compare(right, left) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + heap[index] = left; + heap[leftIndex] = node; + index = leftIndex; + } + } else if (right !== undefined && compare(right, node) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + // Neither child is smaller. Exit. + return; + } + } +} + +function compare(a, b) { + // Compare sort index first, then task id. + var diff = a.sortIndex - b.sortIndex; + return diff !== 0 ? diff : a.id - b.id; +} + +// TODO: Use symbols? +var NoPriority = 0; +var ImmediatePriority = 1; +var UserBlockingPriority = 2; +var NormalPriority = 3; +var LowPriority = 4; +var IdlePriority = 5; + +var runIdCounter = 0; +var mainThreadIdCounter = 0; +var profilingStateSize = 4; +var sharedProfilingBuffer = // $FlowFixMe Flow doesn't know about SharedArrayBuffer +typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer +typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9 +; +var profilingState = sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks + +var PRIORITY = 0; +var CURRENT_TASK_ID = 1; +var CURRENT_RUN_ID = 2; +var QUEUE_SIZE = 3; + +{ + profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue + // array might include canceled tasks. + + profilingState[QUEUE_SIZE] = 0; + profilingState[CURRENT_TASK_ID] = 0; +} // Bytes per element is 4 + + +var INITIAL_EVENT_LOG_SIZE = 131072; +var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes + +var eventLogSize = 0; +var eventLogBuffer = null; +var eventLog = null; +var eventLogIndex = 0; +var TaskStartEvent = 1; +var TaskCompleteEvent = 2; +var TaskErrorEvent = 3; +var TaskCancelEvent = 4; +var TaskRunEvent = 5; +var TaskYieldEvent = 6; +var SchedulerSuspendEvent = 7; +var SchedulerResumeEvent = 8; + +function logEvent(entries) { + if (eventLog !== null) { + var offset = eventLogIndex; + eventLogIndex += entries.length; + + if (eventLogIndex + 1 > eventLogSize) { + eventLogSize *= 2; + + if (eventLogSize > MAX_EVENT_LOG_SIZE) { + // Using console['error'] to evade Babel and ESLint + console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.'); + stopLoggingProfilingEvents(); + return; + } + + var newEventLog = new Int32Array(eventLogSize * 4); + newEventLog.set(eventLog); + eventLogBuffer = newEventLog.buffer; + eventLog = newEventLog; + } + + eventLog.set(entries, offset); + } +} + +function startLoggingProfilingEvents() { + eventLogSize = INITIAL_EVENT_LOG_SIZE; + eventLogBuffer = new ArrayBuffer(eventLogSize * 4); + eventLog = new Int32Array(eventLogBuffer); + eventLogIndex = 0; +} +function stopLoggingProfilingEvents() { + var buffer = eventLogBuffer; + eventLogSize = 0; + eventLogBuffer = null; + eventLog = null; + eventLogIndex = 0; + return buffer; +} +function markTaskStart(task, ms) { + { + profilingState[QUEUE_SIZE]++; + + if (eventLog !== null) { + // performance.now returns a float, representing milliseconds. When the + // event is logged, it's coerced to an int. Convert to microseconds to + // maintain extra degrees of precision. + logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]); + } + } +} +function markTaskCompleted(task, ms) { + { + profilingState[PRIORITY] = NoPriority; + profilingState[CURRENT_TASK_ID] = 0; + profilingState[QUEUE_SIZE]--; + + if (eventLog !== null) { + logEvent([TaskCompleteEvent, ms * 1000, task.id]); + } + } +} +function markTaskCanceled(task, ms) { + { + profilingState[QUEUE_SIZE]--; + + if (eventLog !== null) { + logEvent([TaskCancelEvent, ms * 1000, task.id]); + } + } +} +function markTaskErrored(task, ms) { + { + profilingState[PRIORITY] = NoPriority; + profilingState[CURRENT_TASK_ID] = 0; + profilingState[QUEUE_SIZE]--; + + if (eventLog !== null) { + logEvent([TaskErrorEvent, ms * 1000, task.id]); + } + } +} +function markTaskRun(task, ms) { + { + runIdCounter++; + profilingState[PRIORITY] = task.priorityLevel; + profilingState[CURRENT_TASK_ID] = task.id; + profilingState[CURRENT_RUN_ID] = runIdCounter; + + if (eventLog !== null) { + logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]); + } + } +} +function markTaskYield(task, ms) { + { + profilingState[PRIORITY] = NoPriority; + profilingState[CURRENT_TASK_ID] = 0; + profilingState[CURRENT_RUN_ID] = 0; + + if (eventLog !== null) { + logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]); + } + } +} +function markSchedulerSuspended(ms) { + { + mainThreadIdCounter++; + + if (eventLog !== null) { + logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]); + } + } +} +function markSchedulerUnsuspended(ms) { + { + if (eventLog !== null) { + logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]); + } + } +} + +/* eslint-disable no-var */ +// Math.pow(2, 30) - 1 +// 0b111111111111111111111111111111 + +var maxSigned31BitInt = 1073741823; // Times out immediately + +var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out + +var USER_BLOCKING_PRIORITY = 250; +var NORMAL_PRIORITY_TIMEOUT = 5000; +var LOW_PRIORITY_TIMEOUT = 10000; // Never times out + +var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap + +var taskQueue = []; +var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. + +var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. +var currentTask = null; +var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy. + +var isPerformingWork = false; +var isHostCallbackScheduled = false; +var isHostTimeoutScheduled = false; + +function advanceTimers(currentTime) { + // Check for tasks that are no longer delayed and add them to the queue. + var timer = peek(timerQueue); + + while (timer !== null) { + if (timer.callback === null) { + // Timer was cancelled. + pop(timerQueue); + } else if (timer.startTime <= currentTime) { + // Timer fired. Transfer to the task queue. + pop(timerQueue); + timer.sortIndex = timer.expirationTime; + push(taskQueue, timer); + + { + markTaskStart(timer, currentTime); + timer.isQueued = true; + } + } else { + // Remaining timers are pending. + return; + } + + timer = peek(timerQueue); + } +} + +function handleTimeout(currentTime) { + isHostTimeoutScheduled = false; + advanceTimers(currentTime); + + if (!isHostCallbackScheduled) { + if (peek(taskQueue) !== null) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); + } else { + var firstTimer = peek(timerQueue); + + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); + } + } + } +} + +function flushWork(hasTimeRemaining, initialTime) { + { + markSchedulerUnsuspended(initialTime); + } // We'll need a host callback the next time work is scheduled. + + + isHostCallbackScheduled = false; + + if (isHostTimeoutScheduled) { + // We scheduled a timeout but it's no longer needed. Cancel it. + isHostTimeoutScheduled = false; + cancelHostTimeout(); + } + + isPerformingWork = true; + var previousPriorityLevel = currentPriorityLevel; + + try { + if (enableProfiling) { + try { + return workLoop(hasTimeRemaining, initialTime); + } catch (error) { + if (currentTask !== null) { + var currentTime = getCurrentTime(); + markTaskErrored(currentTask, currentTime); + currentTask.isQueued = false; + } + + throw error; + } + } else { + // No catch in prod codepath. + return workLoop(hasTimeRemaining, initialTime); + } + } finally { + currentTask = null; + currentPriorityLevel = previousPriorityLevel; + isPerformingWork = false; + + { + var _currentTime = getCurrentTime(); + + markSchedulerSuspended(_currentTime); + } + } +} + +function workLoop(hasTimeRemaining, initialTime) { + var currentTime = initialTime; + advanceTimers(currentTime); + currentTask = peek(taskQueue); + + while (currentTask !== null && !(enableSchedulerDebugging )) { + if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) { + // This currentTask hasn't expired, and we've reached the deadline. + break; + } + + var callback = currentTask.callback; + + if (callback !== null) { + currentTask.callback = null; + currentPriorityLevel = currentTask.priorityLevel; + var didUserCallbackTimeout = currentTask.expirationTime <= currentTime; + markTaskRun(currentTask, currentTime); + var continuationCallback = callback(didUserCallbackTimeout); + currentTime = getCurrentTime(); + + if (typeof continuationCallback === 'function') { + currentTask.callback = continuationCallback; + markTaskYield(currentTask, currentTime); + } else { + { + markTaskCompleted(currentTask, currentTime); + currentTask.isQueued = false; + } + + if (currentTask === peek(taskQueue)) { + pop(taskQueue); + } + } + + advanceTimers(currentTime); + } else { + pop(taskQueue); + } + + currentTask = peek(taskQueue); + } // Return whether there's additional work + + + if (currentTask !== null) { + return true; + } else { + var firstTimer = peek(timerQueue); + + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); + } + + return false; + } +} + +function unstable_runWithPriority(priorityLevel, eventHandler) { + switch (priorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + case LowPriority: + case IdlePriority: + break; + + default: + priorityLevel = NormalPriority; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} + +function unstable_next(eventHandler) { + var priorityLevel; + + switch (currentPriorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + // Shift down to normal priority + priorityLevel = NormalPriority; + break; + + default: + // Anything lower than normal priority should remain at the current level. + priorityLevel = currentPriorityLevel; + break; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} + +function unstable_wrapCallback(callback) { + var parentPriorityLevel = currentPriorityLevel; + return function () { + // This is a fork of runWithPriority, inlined for performance. + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = parentPriorityLevel; + + try { + return callback.apply(this, arguments); + } finally { + currentPriorityLevel = previousPriorityLevel; + } + }; +} + +function timeoutForPriorityLevel(priorityLevel) { + switch (priorityLevel) { + case ImmediatePriority: + return IMMEDIATE_PRIORITY_TIMEOUT; + + case UserBlockingPriority: + return USER_BLOCKING_PRIORITY; + + case IdlePriority: + return IDLE_PRIORITY; + + case LowPriority: + return LOW_PRIORITY_TIMEOUT; + + case NormalPriority: + default: + return NORMAL_PRIORITY_TIMEOUT; + } +} + +function unstable_scheduleCallback(priorityLevel, callback, options) { + var currentTime = getCurrentTime(); + var startTime; + var timeout; + + if (typeof options === 'object' && options !== null) { + var delay = options.delay; + + if (typeof delay === 'number' && delay > 0) { + startTime = currentTime + delay; + } else { + startTime = currentTime; + } + + timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel); + } else { + timeout = timeoutForPriorityLevel(priorityLevel); + startTime = currentTime; + } + + var expirationTime = startTime + timeout; + var newTask = { + id: taskIdCounter++, + callback: callback, + priorityLevel: priorityLevel, + startTime: startTime, + expirationTime: expirationTime, + sortIndex: -1 + }; + + { + newTask.isQueued = false; + } + + if (startTime > currentTime) { + // This is a delayed task. + newTask.sortIndex = startTime; + push(timerQueue, newTask); + + if (peek(taskQueue) === null && newTask === peek(timerQueue)) { + // All tasks are delayed, and this is the task with the earliest delay. + if (isHostTimeoutScheduled) { + // Cancel an existing timeout. + cancelHostTimeout(); + } else { + isHostTimeoutScheduled = true; + } // Schedule a timeout. + + + requestHostTimeout(handleTimeout, startTime - currentTime); + } + } else { + newTask.sortIndex = expirationTime; + push(taskQueue, newTask); + + { + markTaskStart(newTask, currentTime); + newTask.isQueued = true; + } // Schedule a host callback, if needed. If we're already performing work, + // wait until the next time we yield. + + + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); + } + } + + return newTask; +} + +function unstable_pauseExecution() { +} + +function unstable_continueExecution() { + + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); + } +} + +function unstable_getFirstCallbackNode() { + return peek(taskQueue); +} + +function unstable_cancelCallback(task) { + { + if (task.isQueued) { + var currentTime = getCurrentTime(); + markTaskCanceled(task, currentTime); + task.isQueued = false; + } + } // Null out the callback to indicate the task has been canceled. (Can't + // remove from the queue because you can't remove arbitrary nodes from an + // array based heap, only the first one.) + + + task.callback = null; +} + +function unstable_getCurrentPriorityLevel() { + return currentPriorityLevel; +} + +function unstable_shouldYield() { + var currentTime = getCurrentTime(); + advanceTimers(currentTime); + var firstTask = peek(taskQueue); + return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost(); +} + +var unstable_requestPaint = requestPaint; +var unstable_Profiling = { + startLoggingProfilingEvents: startLoggingProfilingEvents, + stopLoggingProfilingEvents: stopLoggingProfilingEvents, + sharedProfilingBuffer: sharedProfilingBuffer +} ; + +exports.unstable_IdlePriority = IdlePriority; +exports.unstable_ImmediatePriority = ImmediatePriority; +exports.unstable_LowPriority = LowPriority; +exports.unstable_NormalPriority = NormalPriority; +exports.unstable_Profiling = unstable_Profiling; +exports.unstable_UserBlockingPriority = UserBlockingPriority; +exports.unstable_advanceTime = unstable_advanceTime; +exports.unstable_cancelCallback = unstable_cancelCallback; +exports.unstable_clearYields = unstable_clearYields; +exports.unstable_continueExecution = unstable_continueExecution; +exports.unstable_flushAll = unstable_flushAll; +exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting; +exports.unstable_flushExpired = unstable_flushExpired; +exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields; +exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint; +exports.unstable_forceFrameRate = forceFrameRate; +exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; +exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; +exports.unstable_next = unstable_next; +exports.unstable_now = getCurrentTime; +exports.unstable_pauseExecution = unstable_pauseExecution; +exports.unstable_requestPaint = unstable_requestPaint; +exports.unstable_runWithPriority = unstable_runWithPriority; +exports.unstable_scheduleCallback = unstable_scheduleCallback; +exports.unstable_shouldYield = unstable_shouldYield; +exports.unstable_wrapCallback = unstable_wrapCallback; +exports.unstable_yieldValue = unstable_yieldValue; + })(); +} |