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eric sciple 2020-01-24 12:20:47 -05:00
parent a004f0ae58
commit fc725ba36b
7280 changed files with 19 additions and 1796407 deletions
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838
node_modules/symbol-tree/lib/SymbolTree.js generated vendored
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@ -1,838 +0,0 @@
'use strict';
/**
* @module symbol-tree
* @author Joris van der Wel <joris@jorisvanderwel.com>
*/
const SymbolTreeNode = require('./SymbolTreeNode');
const TreePosition = require('./TreePosition');
const TreeIterator = require('./TreeIterator');
function returnTrue() {
return true;
}
function reverseArrayIndex(array, reverseIndex) {
return array[array.length - 1 - reverseIndex]; // no need to check `index >= 0`
}
class SymbolTree {
/**
* @constructor
* @alias module:symbol-tree
* @param {string} [description='SymbolTree data'] Description used for the Symbol
*/
constructor(description) {
this.symbol = Symbol(description || 'SymbolTree data');
}
/**
* You can use this function to (optionally) initialize an object right after its creation,
* to take advantage of V8's fast properties. Also useful if you would like to
* freeze your object.
*
* `O(1)`
*
* @method
* @alias module:symbol-tree#initialize
* @param {Object} object
* @return {Object} object
*/
initialize(object) {
this._node(object);
return object;
}
_node(object) {
if (!object) {
return null;
}
const node = object[this.symbol];
if (node) {
return node;
}
return (object[this.symbol] = new SymbolTreeNode());
}
/**
* Returns `true` if the object has any children. Otherwise it returns `false`.
*
* * `O(1)`
*
* @method hasChildren
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Boolean}
*/
hasChildren(object) {
return this._node(object).hasChildren;
}
/**
* Returns the first child of the given object.
*
* * `O(1)`
*
* @method firstChild
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
firstChild(object) {
return this._node(object).firstChild;
}
/**
* Returns the last child of the given object.
*
* * `O(1)`
*
* @method lastChild
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
lastChild(object) {
return this._node(object).lastChild;
}
/**
* Returns the previous sibling of the given object.
*
* * `O(1)`
*
* @method previousSibling
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
previousSibling(object) {
return this._node(object).previousSibling;
}
/**
* Returns the next sibling of the given object.
*
* * `O(1)`
*
* @method nextSibling
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
nextSibling(object) {
return this._node(object).nextSibling;
}
/**
* Return the parent of the given object.
*
* * `O(1)`
*
* @method parent
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
parent(object) {
return this._node(object).parent;
}
/**
* Find the inclusive descendant that is last in tree order of the given object.
*
* * `O(n)` (worst case) where `n` is the depth of the subtree of `object`
*
* @method lastInclusiveDescendant
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object}
*/
lastInclusiveDescendant(object) {
let lastChild;
let current = object;
while ((lastChild = this._node(current).lastChild)) {
current = lastChild;
}
return current;
}
/**
* Find the preceding object (A) of the given object (B).
* An object A is preceding an object B if A and B are in the same tree
* and A comes before B in tree order.
*
* * `O(n)` (worst case)
* * `O(1)` (amortized when walking the entire tree)
*
* @method preceding
* @memberOf module:symbol-tree#
* @param {Object} object
* @param {Object} [options]
* @param {Object} [options.root] If set, `root` must be an inclusive ancestor
* of the return value (or else null is returned). This check _assumes_
* that `root` is also an inclusive ancestor of the given `object`
* @return {?Object}
*/
preceding(object, options) {
const treeRoot = options && options.root;
if (object === treeRoot) {
return null;
}
const previousSibling = this._node(object).previousSibling;
if (previousSibling) {
return this.lastInclusiveDescendant(previousSibling);
}
// if there is no previous sibling return the parent (might be null)
return this._node(object).parent;
}
/**
* Find the following object (A) of the given object (B).
* An object A is following an object B if A and B are in the same tree
* and A comes after B in tree order.
*
* * `O(n)` (worst case) where `n` is the amount of objects in the entire tree
* * `O(1)` (amortized when walking the entire tree)
*
* @method following
* @memberOf module:symbol-tree#
* @param {!Object} object
* @param {Object} [options]
* @param {Object} [options.root] If set, `root` must be an inclusive ancestor
* of the return value (or else null is returned). This check _assumes_
* that `root` is also an inclusive ancestor of the given `object`
* @param {Boolean} [options.skipChildren=false] If set, ignore the children of `object`
* @return {?Object}
*/
following(object, options) {
const treeRoot = options && options.root;
const skipChildren = options && options.skipChildren;
const firstChild = !skipChildren && this._node(object).firstChild;
if (firstChild) {
return firstChild;
}
let current = object;
do {
if (current === treeRoot) {
return null;
}
const nextSibling = this._node(current).nextSibling;
if (nextSibling) {
return nextSibling;
}
current = this._node(current).parent;
} while (current);
return null;
}
/**
* Append all children of the given object to an array.
*
* * `O(n)` where `n` is the amount of children of the given `parent`
*
* @method childrenToArray
* @memberOf module:symbol-tree#
* @param {Object} parent
* @param {Object} [options]
* @param {Object[]} [options.array=[]]
* @param {Function} [options.filter] Function to test each object before it is added to the array.
* Invoked with arguments (object). Should return `true` if an object
* is to be included.
* @param {*} [options.thisArg] Value to use as `this` when executing `filter`.
* @return {Object[]}
*/
childrenToArray(parent, options) {
const array = (options && options.array) || [];
const filter = (options && options.filter) || returnTrue;
const thisArg = (options && options.thisArg) || undefined;
const parentNode = this._node(parent);
let object = parentNode.firstChild;
let index = 0;
while (object) {
const node = this._node(object);
node.setCachedIndex(parentNode, index);
if (filter.call(thisArg, object)) {
array.push(object);
}
object = node.nextSibling;
++index;
}
return array;
}
/**
* Append all inclusive ancestors of the given object to an array.
*
* * `O(n)` where `n` is the amount of ancestors of the given `object`
*
* @method ancestorsToArray
* @memberOf module:symbol-tree#
* @param {Object} object
* @param {Object} [options]
* @param {Object[]} [options.array=[]]
* @param {Function} [options.filter] Function to test each object before it is added to the array.
* Invoked with arguments (object). Should return `true` if an object
* is to be included.
* @param {*} [options.thisArg] Value to use as `this` when executing `filter`.
* @return {Object[]}
*/
ancestorsToArray(object, options) {
const array = (options && options.array) || [];
const filter = (options && options.filter) || returnTrue;
const thisArg = (options && options.thisArg) || undefined;
let ancestor = object;
while (ancestor) {
if (filter.call(thisArg, ancestor)) {
array.push(ancestor);
}
ancestor = this._node(ancestor).parent;
}
return array;
}
/**
* Append all descendants of the given object to an array (in tree order).
*
* * `O(n)` where `n` is the amount of objects in the sub-tree of the given `object`
*
* @method treeToArray
* @memberOf module:symbol-tree#
* @param {Object} root
* @param {Object} [options]
* @param {Object[]} [options.array=[]]
* @param {Function} [options.filter] Function to test each object before it is added to the array.
* Invoked with arguments (object). Should return `true` if an object
* is to be included.
* @param {*} [options.thisArg] Value to use as `this` when executing `filter`.
* @return {Object[]}
*/
treeToArray(root, options) {
const array = (options && options.array) || [];
const filter = (options && options.filter) || returnTrue;
const thisArg = (options && options.thisArg) || undefined;
let object = root;
while (object) {
if (filter.call(thisArg, object)) {
array.push(object);
}
object = this.following(object, {root: root});
}
return array;
}
/**
* Iterate over all children of the given object
*
* * `O(1)` for a single iteration
*
* @method childrenIterator
* @memberOf module:symbol-tree#
* @param {Object} parent
* @param {Object} [options]
* @param {Boolean} [options.reverse=false]
* @return {Object} An iterable iterator (ES6)
*/
childrenIterator(parent, options) {
const reverse = options && options.reverse;
const parentNode = this._node(parent);
return new TreeIterator(
this,
parent,
reverse ? parentNode.lastChild : parentNode.firstChild,
reverse ? TreeIterator.PREV : TreeIterator.NEXT
);
}
/**
* Iterate over all the previous siblings of the given object. (in reverse tree order)
*
* * `O(1)` for a single iteration
*
* @method previousSiblingsIterator
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object} An iterable iterator (ES6)
*/
previousSiblingsIterator(object) {
return new TreeIterator(
this,
object,
this._node(object).previousSibling,
TreeIterator.PREV
);
}
/**
* Iterate over all the next siblings of the given object. (in tree order)
*
* * `O(1)` for a single iteration
*
* @method nextSiblingsIterator
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object} An iterable iterator (ES6)
*/
nextSiblingsIterator(object) {
return new TreeIterator(
this,
object,
this._node(object).nextSibling,
TreeIterator.NEXT
);
}
/**
* Iterate over all inclusive ancestors of the given object
*
* * `O(1)` for a single iteration
*
* @method ancestorsIterator
* @memberOf module:symbol-tree#
* @param {Object} object
* @return {Object} An iterable iterator (ES6)
*/
ancestorsIterator(object) {
return new TreeIterator(
this,
object,
object,
TreeIterator.PARENT
);
}
/**
* Iterate over all descendants of the given object (in tree order).
*
* Where `n` is the amount of objects in the sub-tree of the given `root`:
*
* * `O(n)` (worst case for a single iteration)
* * `O(n)` (amortized, when completing the iterator)
*
* @method treeIterator
* @memberOf module:symbol-tree#
* @param {Object} root
* @param {Object} options
* @param {Boolean} [options.reverse=false]
* @return {Object} An iterable iterator (ES6)
*/
treeIterator(root, options) {
const reverse = options && options.reverse;
return new TreeIterator(
this,
root,
reverse ? this.lastInclusiveDescendant(root) : root,
reverse ? TreeIterator.PRECEDING : TreeIterator.FOLLOWING
);
}
/**
* Find the index of the given object (the number of preceding siblings).
*
* * `O(n)` where `n` is the amount of preceding siblings
* * `O(1)` (amortized, if the tree is not modified)
*
* @method index
* @memberOf module:symbol-tree#
* @param {Object} child
* @return {Number} The number of preceding siblings, or -1 if the object has no parent
*/
index(child) {
const childNode = this._node(child);
const parentNode = this._node(childNode.parent);
if (!parentNode) {
// In principal, you could also find out the number of preceding siblings
// for objects that do not have a parent. This method limits itself only to
// objects that have a parent because that lets us optimize more.
return -1;
}
let currentIndex = childNode.getCachedIndex(parentNode);
if (currentIndex >= 0) {
return currentIndex;
}
currentIndex = 0;
let object = parentNode.firstChild;
if (parentNode.childIndexCachedUpTo) {
const cachedUpToNode = this._node(parentNode.childIndexCachedUpTo);
object = cachedUpToNode.nextSibling;
currentIndex = cachedUpToNode.getCachedIndex(parentNode) + 1;
}
while (object) {
const node = this._node(object);
node.setCachedIndex(parentNode, currentIndex);
if (object === child) {
break;
}
++currentIndex;
object = node.nextSibling;
}
parentNode.childIndexCachedUpTo = child;
return currentIndex;
}
/**
* Calculate the number of children.
*
* * `O(n)` where `n` is the amount of children
* * `O(1)` (amortized, if the tree is not modified)
*
* @method childrenCount
* @memberOf module:symbol-tree#
* @param {Object} parent
* @return {Number}
*/
childrenCount(parent) {
const parentNode = this._node(parent);
if (!parentNode.lastChild) {
return 0;
}
return this.index(parentNode.lastChild) + 1;
}
/**
* Compare the position of an object relative to another object. A bit set is returned:
*
* <ul>
* <li>DISCONNECTED : 1</li>
* <li>PRECEDING : 2</li>
* <li>FOLLOWING : 4</li>
* <li>CONTAINS : 8</li>
* <li>CONTAINED_BY : 16</li>
* </ul>
*
* The semantics are the same as compareDocumentPosition in DOM, with the exception that
* DISCONNECTED never occurs with any other bit.
*
* where `n` and `m` are the amount of ancestors of `left` and `right`;
* where `o` is the amount of children of the lowest common ancestor of `left` and `right`:
*
* * `O(n + m + o)` (worst case)
* * `O(n + m)` (amortized, if the tree is not modified)
*
* @method compareTreePosition
* @memberOf module:symbol-tree#
* @param {Object} left
* @param {Object} right
* @return {Number}
*/
compareTreePosition(left, right) {
// In DOM terms:
// left = reference / context object
// right = other
if (left === right) {
return 0;
}
/* jshint -W016 */
const leftAncestors = []; { // inclusive
let leftAncestor = left;
while (leftAncestor) {
if (leftAncestor === right) {
return TreePosition.CONTAINS | TreePosition.PRECEDING;
// other is ancestor of reference
}
leftAncestors.push(leftAncestor);
leftAncestor = this.parent(leftAncestor);
}
}
const rightAncestors = []; {
let rightAncestor = right;
while (rightAncestor) {
if (rightAncestor === left) {
return TreePosition.CONTAINED_BY | TreePosition.FOLLOWING;
}
rightAncestors.push(rightAncestor);
rightAncestor = this.parent(rightAncestor);
}
}
const root = reverseArrayIndex(leftAncestors, 0);
if (!root || root !== reverseArrayIndex(rightAncestors, 0)) {
// note: unlike DOM, preceding / following is not set here
return TreePosition.DISCONNECTED;
}
// find the lowest common ancestor
let commonAncestorIndex = 0;
const ancestorsMinLength = Math.min(leftAncestors.length, rightAncestors.length);
for (let i = 0; i < ancestorsMinLength; ++i) {
const leftAncestor = reverseArrayIndex(leftAncestors, i);
const rightAncestor = reverseArrayIndex(rightAncestors, i);
if (leftAncestor !== rightAncestor) {
break;
}
commonAncestorIndex = i;
}
// indexes within the common ancestor
const leftIndex = this.index(reverseArrayIndex(leftAncestors, commonAncestorIndex + 1));
const rightIndex = this.index(reverseArrayIndex(rightAncestors, commonAncestorIndex + 1));
return rightIndex < leftIndex
? TreePosition.PRECEDING
: TreePosition.FOLLOWING;
}
/**
* Remove the object from this tree.
* Has no effect if already removed.
*
* * `O(1)`
*
* @method remove
* @memberOf module:symbol-tree#
* @param {Object} removeObject
* @return {Object} removeObject
*/
remove(removeObject) {
const removeNode = this._node(removeObject);
const parentNode = this._node(removeNode.parent);
const prevNode = this._node(removeNode.previousSibling);
const nextNode = this._node(removeNode.nextSibling);
if (parentNode) {
if (parentNode.firstChild === removeObject) {
parentNode.firstChild = removeNode.nextSibling;
}
if (parentNode.lastChild === removeObject) {
parentNode.lastChild = removeNode.previousSibling;
}
}
if (prevNode) {
prevNode.nextSibling = removeNode.nextSibling;
}
if (nextNode) {
nextNode.previousSibling = removeNode.previousSibling;
}
removeNode.parent = null;
removeNode.previousSibling = null;
removeNode.nextSibling = null;
removeNode.cachedIndex = -1;
removeNode.cachedIndexVersion = NaN;
if (parentNode) {
parentNode.childrenChanged();
}
return removeObject;
}
/**
* Insert the given object before the reference object.
* `newObject` is now the previous sibling of `referenceObject`.
*
* * `O(1)`
*
* @method insertBefore
* @memberOf module:symbol-tree#
* @param {Object} referenceObject
* @param {Object} newObject
* @throws {Error} If the newObject is already present in this SymbolTree
* @return {Object} newObject
*/
insertBefore(referenceObject, newObject) {
const referenceNode = this._node(referenceObject);
const prevNode = this._node(referenceNode.previousSibling);
const newNode = this._node(newObject);
const parentNode = this._node(referenceNode.parent);
if (newNode.isAttached) {
throw Error('Given object is already present in this SymbolTree, remove it first');
}
newNode.parent = referenceNode.parent;
newNode.previousSibling = referenceNode.previousSibling;
newNode.nextSibling = referenceObject;
referenceNode.previousSibling = newObject;
if (prevNode) {
prevNode.nextSibling = newObject;
}
if (parentNode && parentNode.firstChild === referenceObject) {
parentNode.firstChild = newObject;
}
if (parentNode) {
parentNode.childrenChanged();
}
return newObject;
}
/**
* Insert the given object after the reference object.
* `newObject` is now the next sibling of `referenceObject`.
*
* * `O(1)`
*
* @method insertAfter
* @memberOf module:symbol-tree#
* @param {Object} referenceObject
* @param {Object} newObject
* @throws {Error} If the newObject is already present in this SymbolTree
* @return {Object} newObject
*/
insertAfter(referenceObject, newObject) {
const referenceNode = this._node(referenceObject);
const nextNode = this._node(referenceNode.nextSibling);
const newNode = this._node(newObject);
const parentNode = this._node(referenceNode.parent);
if (newNode.isAttached) {
throw Error('Given object is already present in this SymbolTree, remove it first');
}
newNode.parent = referenceNode.parent;
newNode.previousSibling = referenceObject;
newNode.nextSibling = referenceNode.nextSibling;
referenceNode.nextSibling = newObject;
if (nextNode) {
nextNode.previousSibling = newObject;
}
if (parentNode && parentNode.lastChild === referenceObject) {
parentNode.lastChild = newObject;
}
if (parentNode) {
parentNode.childrenChanged();
}
return newObject;
}
/**
* Insert the given object as the first child of the given reference object.
* `newObject` is now the first child of `referenceObject`.
*
* * `O(1)`
*
* @method prependChild
* @memberOf module:symbol-tree#
* @param {Object} referenceObject
* @param {Object} newObject
* @throws {Error} If the newObject is already present in this SymbolTree
* @return {Object} newObject
*/
prependChild(referenceObject, newObject) {
const referenceNode = this._node(referenceObject);
const newNode = this._node(newObject);
if (newNode.isAttached) {
throw Error('Given object is already present in this SymbolTree, remove it first');
}
if (referenceNode.hasChildren) {
this.insertBefore(referenceNode.firstChild, newObject);
}
else {
newNode.parent = referenceObject;
referenceNode.firstChild = newObject;
referenceNode.lastChild = newObject;
referenceNode.childrenChanged();
}
return newObject;
}
/**
* Insert the given object as the last child of the given reference object.
* `newObject` is now the last child of `referenceObject`.
*
* * `O(1)`
*
* @method appendChild
* @memberOf module:symbol-tree#
* @param {Object} referenceObject
* @param {Object} newObject
* @throws {Error} If the newObject is already present in this SymbolTree
* @return {Object} newObject
*/
appendChild(referenceObject, newObject) {
const referenceNode = this._node(referenceObject);
const newNode = this._node(newObject);
if (newNode.isAttached) {
throw Error('Given object is already present in this SymbolTree, remove it first');
}
if (referenceNode.hasChildren) {
this.insertAfter(referenceNode.lastChild, newObject);
}
else {
newNode.parent = referenceObject;
referenceNode.firstChild = newObject;
referenceNode.lastChild = newObject;
referenceNode.childrenChanged();
}
return newObject;
}
}
module.exports = SymbolTree;
SymbolTree.TreePosition = TreePosition;

54
node_modules/symbol-tree/lib/SymbolTreeNode.js generated vendored
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@ -1,54 +0,0 @@
'use strict';
module.exports = class SymbolTreeNode {
constructor() {
this.parent = null;
this.previousSibling = null;
this.nextSibling = null;
this.firstChild = null;
this.lastChild = null;
/** This value is incremented anytime a children is added or removed */
this.childrenVersion = 0;
/** The last child object which has a cached index */
this.childIndexCachedUpTo = null;
/** This value represents the cached node index, as long as
* cachedIndexVersion matches with the childrenVersion of the parent */
this.cachedIndex = -1;
this.cachedIndexVersion = NaN; // NaN is never equal to anything
}
get isAttached() {
return Boolean(this.parent || this.previousSibling || this.nextSibling);
}
get hasChildren() {
return Boolean(this.firstChild);
}
childrenChanged() {
/* jshint -W016 */
// integer wrap around
this.childrenVersion = (this.childrenVersion + 1) & 0xFFFFFFFF;
this.childIndexCachedUpTo = null;
}
getCachedIndex(parentNode) {
// (assumes parentNode is actually the parent)
if (this.cachedIndexVersion !== parentNode.childrenVersion) {
this.cachedIndexVersion = NaN;
// cachedIndex is no longer valid
return -1;
}
return this.cachedIndex; // -1 if not cached
}
setCachedIndex(parentNode, index) {
// (assumes parentNode is actually the parent)
this.cachedIndexVersion = parentNode.childrenVersion;
this.cachedIndex = index;
}
};

69
node_modules/symbol-tree/lib/TreeIterator.js generated vendored
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@ -1,69 +0,0 @@
'use strict';
const TREE = Symbol();
const ROOT = Symbol();
const NEXT = Symbol();
const ITERATE_FUNC = Symbol();
class TreeIterator {
constructor(tree, root, firstResult, iterateFunction) {
this[TREE] = tree;
this[ROOT] = root;
this[NEXT] = firstResult;
this[ITERATE_FUNC] = iterateFunction;
}
next() {
const tree = this[TREE];
const iterateFunc = this[ITERATE_FUNC];
const root = this[ROOT];
if (!this[NEXT]) {
return {
done: true,
value: root,
};
}
const value = this[NEXT];
if (iterateFunc === 1) {
this[NEXT] = tree._node(value).previousSibling;
}
else if (iterateFunc === 2) {
this[NEXT] = tree._node(value).nextSibling;
}
else if (iterateFunc === 3) {
this[NEXT] = tree._node(value).parent;
}
else if (iterateFunc === 4) {
this[NEXT] = tree.preceding(value, {root: root});
}
else /* if (iterateFunc === 5)*/ {
this[NEXT] = tree.following(value, {root: root});
}
return {
done: false,
value: value,
};
}
}
Object.defineProperty(TreeIterator.prototype, Symbol.iterator, {
value: function() {
return this;
},
writable: false,
});
TreeIterator.PREV = 1;
TreeIterator.NEXT = 2;
TreeIterator.PARENT = 3;
TreeIterator.PRECEDING = 4;
TreeIterator.FOLLOWING = 5;
Object.freeze(TreeIterator);
Object.freeze(TreeIterator.prototype);
module.exports = TreeIterator;

11
node_modules/symbol-tree/lib/TreePosition.js generated vendored
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@ -1,11 +0,0 @@
'use strict';
/* eslint-disable sort-keys */
module.exports = Object.freeze({
// same as DOM DOCUMENT_POSITION_
DISCONNECTED: 1,
PRECEDING: 2,
FOLLOWING: 4,
CONTAINS: 8,
CONTAINED_BY: 16,
});