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Diffstat (limited to 'node_modules/react/lib/traverseAllChildren.js')
| -rw-r--r-- | node_modules/react/lib/traverseAllChildren.js | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/node_modules/react/lib/traverseAllChildren.js b/node_modules/react/lib/traverseAllChildren.js deleted file mode 100644 index 52fdb6e6f..000000000 --- a/node_modules/react/lib/traverseAllChildren.js +++ /dev/null @@ -1,175 +0,0 @@ -/** - * Copyright 2013-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 REACT_ELEMENT_TYPE = require('./ReactElementSymbol'); - -var getIteratorFn = require('./getIteratorFn'); -var invariant = require('fbjs/lib/invariant'); -var KeyEscapeUtils = require('./KeyEscapeUtils'); -var warning = require('fbjs/lib/warning'); - -var SEPARATOR = '.'; -var SUBSEPARATOR = ':'; - -/** - * This is inlined from ReactElement since this file is shared between - * isomorphic and renderers. We could extract this to a - * - */ - -/** - * TODO: Test that a single child and an array with one item have the same key - * pattern. - */ - -var didWarnAboutMaps = false; - -/** - * Generate a key string that identifies a component within a set. - * - * @param {*} component A component that could contain a manual key. - * @param {number} index Index that is used if a manual key is not provided. - * @return {string} - */ -function getComponentKey(component, index) { - // Do some typechecking here since we call this blindly. We want to ensure - // that we don't block potential future ES APIs. - if (component && typeof component === 'object' && component.key != null) { - // Explicit key - return KeyEscapeUtils.escape(component.key); - } - // Implicit key determined by the index in the set - return index.toString(36); -} - -/** - * @param {?*} children Children tree container. - * @param {!string} nameSoFar Name of the key path so far. - * @param {!function} callback Callback to invoke with each child found. - * @param {?*} traverseContext Used to pass information throughout the traversal - * process. - * @return {!number} The number of children in this subtree. - */ -function traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) { - var type = typeof children; - - if (type === 'undefined' || type === 'boolean') { - // All of the above are perceived as null. - children = null; - } - - if (children === null || type === 'string' || type === 'number' || - // The following is inlined from ReactElement. This means we can optimize - // some checks. React Fiber also inlines this logic for similar purposes. - type === 'object' && children.$$typeof === REACT_ELEMENT_TYPE) { - callback(traverseContext, children, - // If it's the only child, treat the name as if it was wrapped in an array - // so that it's consistent if the number of children grows. - nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar); - return 1; - } - - var child; - var nextName; - var subtreeCount = 0; // Count of children found in the current subtree. - var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR; - - if (Array.isArray(children)) { - for (var i = 0; i < children.length; i++) { - child = children[i]; - nextName = nextNamePrefix + getComponentKey(child, i); - subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext); - } - } else { - var iteratorFn = getIteratorFn(children); - if (iteratorFn) { - var iterator = iteratorFn.call(children); - var step; - if (iteratorFn !== children.entries) { - var ii = 0; - while (!(step = iterator.next()).done) { - child = step.value; - nextName = nextNamePrefix + getComponentKey(child, ii++); - subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext); - } - } else { - if (process.env.NODE_ENV !== 'production') { - var mapsAsChildrenAddendum = ''; - if (ReactCurrentOwner.current) { - var mapsAsChildrenOwnerName = ReactCurrentOwner.current.getName(); - if (mapsAsChildrenOwnerName) { - mapsAsChildrenAddendum = ' Check the render method of `' + mapsAsChildrenOwnerName + '`.'; - } - } - process.env.NODE_ENV !== 'production' ? warning(didWarnAboutMaps, 'Using Maps as children is not yet fully supported. It is an ' + 'experimental feature that might be removed. Convert it to a ' + 'sequence / iterable of keyed ReactElements instead.%s', mapsAsChildrenAddendum) : void 0; - didWarnAboutMaps = true; - } - // Iterator will provide entry [k,v] tuples rather than values. - while (!(step = iterator.next()).done) { - var entry = step.value; - if (entry) { - child = entry[1]; - nextName = nextNamePrefix + KeyEscapeUtils.escape(entry[0]) + SUBSEPARATOR + getComponentKey(child, 0); - subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext); - } - } - } - } else if (type === 'object') { - var addendum = ''; - if (process.env.NODE_ENV !== 'production') { - addendum = ' If you meant to render a collection of children, use an array ' + 'instead or wrap the object using createFragment(object) from the ' + 'React add-ons.'; - if (children._isReactElement) { - addendum = " It looks like you're using an element created by a different " + 'version of React. Make sure to use only one copy of React.'; - } - if (ReactCurrentOwner.current) { - var name = ReactCurrentOwner.current.getName(); - if (name) { - addendum += ' Check the render method of `' + name + '`.'; - } - } - } - var childrenString = String(children); - !false ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Objects are not valid as a React child (found: %s).%s', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : _prodInvariant('31', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : void 0; - } - } - - return subtreeCount; -} - -/** - * Traverses children that are typically specified as `props.children`, but - * might also be specified through attributes: - * - * - `traverseAllChildren(this.props.children, ...)` - * - `traverseAllChildren(this.props.leftPanelChildren, ...)` - * - * The `traverseContext` is an optional argument that is passed through the - * entire traversal. It can be used to store accumulations or anything else that - * the callback might find relevant. - * - * @param {?*} children Children tree object. - * @param {!function} callback To invoke upon traversing each child. - * @param {?*} traverseContext Context for traversal. - * @return {!number} The number of children in this subtree. - */ -function traverseAllChildren(children, callback, traverseContext) { - if (children == null) { - return 0; - } - - return traverseAllChildrenImpl(children, '', callback, traverseContext); -} - -module.exports = traverseAllChildren;
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