lix-website/themes/lix/assets/bootstrap/node_modules/traverse/index.js

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2024-04-27 03:39:10 +00:00
module.exports = Traverse;
function Traverse (obj) {
if (!(this instanceof Traverse)) return new Traverse(obj);
this.value = obj;
}
Traverse.prototype.get = function (ps) {
var node = this.value;
for (var i = 0; i < ps.length; i ++) {
var key = ps[i];
if (!Object.hasOwnProperty.call(node, key)) {
node = undefined;
break;
}
node = node[key];
}
return node;
};
Traverse.prototype.set = function (ps, value) {
var node = this.value;
for (var i = 0; i < ps.length - 1; i ++) {
var key = ps[i];
if (!Object.hasOwnProperty.call(node, key)) node[key] = {};
node = node[key];
}
node[ps[i]] = value;
return value;
};
Traverse.prototype.map = function (cb) {
return walk(this.value, cb, true);
};
Traverse.prototype.forEach = function (cb) {
this.value = walk(this.value, cb, false);
return this.value;
};
Traverse.prototype.reduce = function (cb, init) {
var skip = arguments.length === 1;
var acc = skip ? this.value : init;
this.forEach(function (x) {
if (!this.isRoot || !skip) {
acc = cb.call(this, acc, x);
}
});
return acc;
};
Traverse.prototype.deepEqual = function (obj) {
if (arguments.length !== 1) {
throw new Error(
'deepEqual requires exactly one object to compare against'
);
}
var equal = true;
var node = obj;
this.forEach(function (y) {
var notEqual = (function () {
equal = false;
//this.stop();
return undefined;
}).bind(this);
//if (node === undefined || node === null) return notEqual();
if (!this.isRoot) {
/*
if (!Object.hasOwnProperty.call(node, this.key)) {
return notEqual();
}
*/
if (typeof node !== 'object') return notEqual();
node = node[this.key];
}
var x = node;
this.post(function () {
node = x;
});
var toS = function (o) {
return Object.prototype.toString.call(o);
};
if (this.circular) {
if (Traverse(obj).get(this.circular.path) !== x) notEqual();
}
else if (typeof x !== typeof y) {
notEqual();
}
else if (x === null || y === null || x === undefined || y === undefined) {
if (x !== y) notEqual();
}
else if (x.__proto__ !== y.__proto__) {
notEqual();
}
else if (x === y) {
// nop
}
else if (typeof x === 'function') {
if (x instanceof RegExp) {
// both regexps on account of the __proto__ check
if (x.toString() != y.toString()) notEqual();
}
else if (x !== y) notEqual();
}
else if (typeof x === 'object') {
if (toS(y) === '[object Arguments]'
|| toS(x) === '[object Arguments]') {
if (toS(x) !== toS(y)) {
notEqual();
}
}
else if (x instanceof Date || y instanceof Date) {
if (!(x instanceof Date) || !(y instanceof Date)
|| x.getTime() !== y.getTime()) {
notEqual();
}
}
else {
var kx = Object.keys(x);
var ky = Object.keys(y);
if (kx.length !== ky.length) return notEqual();
for (var i = 0; i < kx.length; i++) {
var k = kx[i];
if (!Object.hasOwnProperty.call(y, k)) {
notEqual();
}
}
}
}
});
return equal;
};
Traverse.prototype.paths = function () {
var acc = [];
this.forEach(function (x) {
acc.push(this.path);
});
return acc;
};
Traverse.prototype.nodes = function () {
var acc = [];
this.forEach(function (x) {
acc.push(this.node);
});
return acc;
};
Traverse.prototype.clone = function () {
var parents = [], nodes = [];
return (function clone (src) {
for (var i = 0; i < parents.length; i++) {
if (parents[i] === src) {
return nodes[i];
}
}
if (typeof src === 'object' && src !== null) {
var dst = copy(src);
parents.push(src);
nodes.push(dst);
Object.keys(src).forEach(function (key) {
dst[key] = clone(src[key]);
});
parents.pop();
nodes.pop();
return dst;
}
else {
return src;
}
})(this.value);
};
function walk (root, cb, immutable) {
var path = [];
var parents = [];
var alive = true;
return (function walker (node_) {
var node = immutable ? copy(node_) : node_;
var modifiers = {};
var state = {
node : node,
node_ : node_,
path : [].concat(path),
parent : parents.slice(-1)[0],
key : path.slice(-1)[0],
isRoot : path.length === 0,
level : path.length,
circular : null,
update : function (x) {
if (!state.isRoot) {
state.parent.node[state.key] = x;
}
state.node = x;
},
'delete' : function () {
delete state.parent.node[state.key];
},
remove : function () {
if (Array.isArray(state.parent.node)) {
state.parent.node.splice(state.key, 1);
}
else {
delete state.parent.node[state.key];
}
},
before : function (f) { modifiers.before = f },
after : function (f) { modifiers.after = f },
pre : function (f) { modifiers.pre = f },
post : function (f) { modifiers.post = f },
stop : function () { alive = false }
};
if (!alive) return state;
if (typeof node === 'object' && node !== null) {
state.isLeaf = Object.keys(node).length == 0;
for (var i = 0; i < parents.length; i++) {
if (parents[i].node_ === node_) {
state.circular = parents[i];
break;
}
}
}
else {
state.isLeaf = true;
}
state.notLeaf = !state.isLeaf;
state.notRoot = !state.isRoot;
// use return values to update if defined
var ret = cb.call(state, state.node);
if (ret !== undefined && state.update) state.update(ret);
if (modifiers.before) modifiers.before.call(state, state.node);
if (typeof state.node == 'object'
&& state.node !== null && !state.circular) {
parents.push(state);
var keys = Object.keys(state.node);
keys.forEach(function (key, i) {
path.push(key);
if (modifiers.pre) modifiers.pre.call(state, state.node[key], key);
var child = walker(state.node[key]);
if (immutable && Object.hasOwnProperty.call(state.node, key)) {
state.node[key] = child.node;
}
child.isLast = i == keys.length - 1;
child.isFirst = i == 0;
if (modifiers.post) modifiers.post.call(state, child);
path.pop();
});
parents.pop();
}
if (modifiers.after) modifiers.after.call(state, state.node);
return state;
})(root).node;
}
Object.keys(Traverse.prototype).forEach(function (key) {
Traverse[key] = function (obj) {
var args = [].slice.call(arguments, 1);
var t = Traverse(obj);
return t[key].apply(t, args);
};
});
function copy (src) {
if (typeof src === 'object' && src !== null) {
var dst;
if (Array.isArray(src)) {
dst = [];
}
else if (src instanceof Date) {
dst = new Date(src);
}
else if (src instanceof Boolean) {
dst = new Boolean(src);
}
else if (src instanceof Number) {
dst = new Number(src);
}
else if (src instanceof String) {
dst = new String(src);
}
else {
dst = Object.create(Object.getPrototypeOf(src));
}
Object.keys(src).forEach(function (key) {
dst[key] = src[key];
});
return dst;
}
else return src;
}