From de98e0b232509d5f40c135d540a70e415272ff85 Mon Sep 17 00:00:00 2001 From: Florian Dold Date: Wed, 3 May 2017 15:35:00 +0200 Subject: node_modules --- node_modules/react/lib/ReactComponentTreeHook.js | 333 +++++++++++++++++++++++ 1 file changed, 333 insertions(+) create mode 100644 node_modules/react/lib/ReactComponentTreeHook.js (limited to 'node_modules/react/lib/ReactComponentTreeHook.js') diff --git a/node_modules/react/lib/ReactComponentTreeHook.js b/node_modules/react/lib/ReactComponentTreeHook.js new file mode 100644 index 000000000..b2faa205f --- /dev/null +++ b/node_modules/react/lib/ReactComponentTreeHook.js @@ -0,0 +1,333 @@ +/** + * Copyright 2016-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + * + */ + +'use strict'; + +var _prodInvariant = require('./reactProdInvariant'); + +var ReactCurrentOwner = require('./ReactCurrentOwner'); + +var invariant = require('fbjs/lib/invariant'); +var warning = require('fbjs/lib/warning'); + +function isNative(fn) { + // Based on isNative() from Lodash + var funcToString = Function.prototype.toString; + var hasOwnProperty = Object.prototype.hasOwnProperty; + var reIsNative = RegExp('^' + funcToString + // Take an example native function source for comparison + .call(hasOwnProperty) + // Strip regex characters so we can use it for regex + .replace(/[\\^$.*+?()[\]{}|]/g, '\\$&') + // Remove hasOwnProperty from the template to make it generic + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'); + try { + var source = funcToString.call(fn); + return reIsNative.test(source); + } catch (err) { + return false; + } +} + +var canUseCollections = +// Array.from +typeof Array.from === 'function' && +// Map +typeof Map === 'function' && isNative(Map) && +// Map.prototype.keys +Map.prototype != null && typeof Map.prototype.keys === 'function' && isNative(Map.prototype.keys) && +// Set +typeof Set === 'function' && isNative(Set) && +// Set.prototype.keys +Set.prototype != null && typeof Set.prototype.keys === 'function' && isNative(Set.prototype.keys); + +var setItem; +var getItem; +var removeItem; +var getItemIDs; +var addRoot; +var removeRoot; +var getRootIDs; + +if (canUseCollections) { + var itemMap = new Map(); + var rootIDSet = new Set(); + + setItem = function (id, item) { + itemMap.set(id, item); + }; + getItem = function (id) { + return itemMap.get(id); + }; + removeItem = function (id) { + itemMap['delete'](id); + }; + getItemIDs = function () { + return Array.from(itemMap.keys()); + }; + + addRoot = function (id) { + rootIDSet.add(id); + }; + removeRoot = function (id) { + rootIDSet['delete'](id); + }; + getRootIDs = function () { + return Array.from(rootIDSet.keys()); + }; +} else { + var itemByKey = {}; + var rootByKey = {}; + + // Use non-numeric keys to prevent V8 performance issues: + // https://github.com/facebook/react/pull/7232 + var getKeyFromID = function (id) { + return '.' + id; + }; + var getIDFromKey = function (key) { + return parseInt(key.substr(1), 10); + }; + + setItem = function (id, item) { + var key = getKeyFromID(id); + itemByKey[key] = item; + }; + getItem = function (id) { + var key = getKeyFromID(id); + return itemByKey[key]; + }; + removeItem = function (id) { + var key = getKeyFromID(id); + delete itemByKey[key]; + }; + getItemIDs = function () { + return Object.keys(itemByKey).map(getIDFromKey); + }; + + addRoot = function (id) { + var key = getKeyFromID(id); + rootByKey[key] = true; + }; + removeRoot = function (id) { + var key = getKeyFromID(id); + delete rootByKey[key]; + }; + getRootIDs = function () { + return Object.keys(rootByKey).map(getIDFromKey); + }; +} + +var unmountedIDs = []; + +function purgeDeep(id) { + var item = getItem(id); + if (item) { + var childIDs = item.childIDs; + + removeItem(id); + childIDs.forEach(purgeDeep); + } +} + +function describeComponentFrame(name, source, ownerName) { + return '\n in ' + (name || 'Unknown') + (source ? ' (at ' + source.fileName.replace(/^.*[\\\/]/, '') + ':' + source.lineNumber + ')' : ownerName ? ' (created by ' + ownerName + ')' : ''); +} + +function getDisplayName(element) { + if (element == null) { + return '#empty'; + } else if (typeof element === 'string' || typeof element === 'number') { + return '#text'; + } else if (typeof element.type === 'string') { + return element.type; + } else { + return element.type.displayName || element.type.name || 'Unknown'; + } +} + +function describeID(id) { + var name = ReactComponentTreeHook.getDisplayName(id); + var element = ReactComponentTreeHook.getElement(id); + var ownerID = ReactComponentTreeHook.getOwnerID(id); + var ownerName; + if (ownerID) { + ownerName = ReactComponentTreeHook.getDisplayName(ownerID); + } + process.env.NODE_ENV !== 'production' ? warning(element, 'ReactComponentTreeHook: Missing React element for debugID %s when ' + 'building stack', id) : void 0; + return describeComponentFrame(name, element && element._source, ownerName); +} + +var ReactComponentTreeHook = { + onSetChildren: function (id, nextChildIDs) { + var item = getItem(id); + !item ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Item must have been set') : _prodInvariant('144') : void 0; + item.childIDs = nextChildIDs; + + for (var i = 0; i < nextChildIDs.length; i++) { + var nextChildID = nextChildIDs[i]; + var nextChild = getItem(nextChildID); + !nextChild ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Expected hook events to fire for the child before its parent includes it in onSetChildren().') : _prodInvariant('140') : void 0; + !(nextChild.childIDs != null || typeof nextChild.element !== 'object' || nextChild.element == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Expected onSetChildren() to fire for a container child before its parent includes it in onSetChildren().') : _prodInvariant('141') : void 0; + !nextChild.isMounted ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Expected onMountComponent() to fire for the child before its parent includes it in onSetChildren().') : _prodInvariant('71') : void 0; + if (nextChild.parentID == null) { + nextChild.parentID = id; + // TODO: This shouldn't be necessary but mounting a new root during in + // componentWillMount currently causes not-yet-mounted components to + // be purged from our tree data so their parent id is missing. + } + !(nextChild.parentID === id) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Expected onBeforeMountComponent() parent and onSetChildren() to be consistent (%s has parents %s and %s).', nextChildID, nextChild.parentID, id) : _prodInvariant('142', nextChildID, nextChild.parentID, id) : void 0; + } + }, + onBeforeMountComponent: function (id, element, parentID) { + var item = { + element: element, + parentID: parentID, + text: null, + childIDs: [], + isMounted: false, + updateCount: 0 + }; + setItem(id, item); + }, + onBeforeUpdateComponent: function (id, element) { + var item = getItem(id); + if (!item || !item.isMounted) { + // We may end up here as a result of setState() in componentWillUnmount(). + // In this case, ignore the element. + return; + } + item.element = element; + }, + onMountComponent: function (id) { + var item = getItem(id); + !item ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Item must have been set') : _prodInvariant('144') : void 0; + item.isMounted = true; + var isRoot = item.parentID === 0; + if (isRoot) { + addRoot(id); + } + }, + onUpdateComponent: function (id) { + var item = getItem(id); + if (!item || !item.isMounted) { + // We may end up here as a result of setState() in componentWillUnmount(). + // In this case, ignore the element. + return; + } + item.updateCount++; + }, + onUnmountComponent: function (id) { + var item = getItem(id); + if (item) { + // We need to check if it exists. + // `item` might not exist if it is inside an error boundary, and a sibling + // error boundary child threw while mounting. Then this instance never + // got a chance to mount, but it still gets an unmounting event during + // the error boundary cleanup. + item.isMounted = false; + var isRoot = item.parentID === 0; + if (isRoot) { + removeRoot(id); + } + } + unmountedIDs.push(id); + }, + purgeUnmountedComponents: function () { + if (ReactComponentTreeHook._preventPurging) { + // Should only be used for testing. + return; + } + + for (var i = 0; i < unmountedIDs.length; i++) { + var id = unmountedIDs[i]; + purgeDeep(id); + } + unmountedIDs.length = 0; + }, + isMounted: function (id) { + var item = getItem(id); + return item ? item.isMounted : false; + }, + getCurrentStackAddendum: function (topElement) { + var info = ''; + if (topElement) { + var name = getDisplayName(topElement); + var owner = topElement._owner; + info += describeComponentFrame(name, topElement._source, owner && owner.getName()); + } + + var currentOwner = ReactCurrentOwner.current; + var id = currentOwner && currentOwner._debugID; + + info += ReactComponentTreeHook.getStackAddendumByID(id); + return info; + }, + getStackAddendumByID: function (id) { + var info = ''; + while (id) { + info += describeID(id); + id = ReactComponentTreeHook.getParentID(id); + } + return info; + }, + getChildIDs: function (id) { + var item = getItem(id); + return item ? item.childIDs : []; + }, + getDisplayName: function (id) { + var element = ReactComponentTreeHook.getElement(id); + if (!element) { + return null; + } + return getDisplayName(element); + }, + getElement: function (id) { + var item = getItem(id); + return item ? item.element : null; + }, + getOwnerID: function (id) { + var element = ReactComponentTreeHook.getElement(id); + if (!element || !element._owner) { + return null; + } + return element._owner._debugID; + }, + getParentID: function (id) { + var item = getItem(id); + return item ? item.parentID : null; + }, + getSource: function (id) { + var item = getItem(id); + var element = item ? item.element : null; + var source = element != null ? element._source : null; + return source; + }, + getText: function (id) { + var element = ReactComponentTreeHook.getElement(id); + if (typeof element === 'string') { + return element; + } else if (typeof element === 'number') { + return '' + element; + } else { + return null; + } + }, + getUpdateCount: function (id) { + var item = getItem(id); + return item ? item.updateCount : 0; + }, + + + getRootIDs: getRootIDs, + getRegisteredIDs: getItemIDs +}; + +module.exports = ReactComponentTreeHook; \ No newline at end of file -- cgit v1.2.3