“use strict”;

const conversions = require(“webidl-conversions”); const utils = require(“./utils.js”); const impl = utils.implSymbol;

function TreeWalker() {

throw new TypeError("Illegal constructor");

}

TreeWalker.prototype.parentNode = function parentNode() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].parentNode.apply(this[impl], args));

};

TreeWalker.prototype.firstChild = function firstChild() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].firstChild.apply(this[impl], args));

};

TreeWalker.prototype.lastChild = function lastChild() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].lastChild.apply(this[impl], args));

};

TreeWalker.prototype.previousSibling = function previousSibling() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].previousSibling.apply(this[impl], args));

};

TreeWalker.prototype.nextSibling = function nextSibling() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].nextSibling.apply(this[impl], args));

};

TreeWalker.prototype.previousNode = function previousNode() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].previousNode.apply(this[impl], args));

};

TreeWalker.prototype.nextNode = function nextNode() {

if (!this || !module.exports.is(this)) {
  throw new TypeError("Illegal invocation");
}
const args = [];
for (let i = 0; i < arguments.length && i < 0; ++i) {
  args[i] = utils.tryImplForWrapper(arguments[i]);
}
return utils.tryWrapperForImpl(this[impl].nextNode.apply(this[impl], args));

};

TreeWalker.prototype.toString = function () {

if (this === TreeWalker.prototype) {
  return "[object TreeWalkerPrototype]";
}
return this[impl].toString();

}; Object.defineProperty(TreeWalker.prototype, “root”, {

get() {
  return utils.tryWrapperForImpl(this[impl].root);
},
enumerable: true,
configurable: true

});

Object.defineProperty(TreeWalker.prototype, “whatToShow”, {

get() {
  return this[impl].whatToShow;
},
enumerable: true,
configurable: true

});

Object.defineProperty(TreeWalker.prototype, “filter”, {

get() {
  return utils.tryWrapperForImpl(this[impl].filter);
},
enumerable: true,
configurable: true

});

Object.defineProperty(TreeWalker.prototype, “currentNode”, {

get() {
  return utils.tryWrapperForImpl(this[impl].currentNode);
},
set(V) {
  this[impl].currentNode = utils.tryImplForWrapper(V);
},
enumerable: true,
configurable: true

});

const iface = {

mixedInto: [],
is(obj) {
  if (obj) {
    if (obj[impl] instanceof Impl.implementation) {
      return true;
    }
    for (let i = 0; i < module.exports.mixedInto.length; ++i) {
      if (obj instanceof module.exports.mixedInto[i]) {
        return true;
      }
    }
  }
  return false;
},
isImpl(obj) {
  if (obj) {
    if (obj instanceof Impl.implementation) {
      return true;
    }

    const wrapper = utils.wrapperForImpl(obj);
    for (let i = 0; i < module.exports.mixedInto.length; ++i) {
      if (wrapper instanceof module.exports.mixedInto[i]) {
        return true;
      }
    }
  }
  return false;
},
create(constructorArgs, privateData) {
  let obj = Object.create(TreeWalker.prototype);
  this.setup(obj, constructorArgs, privateData);
  return obj;
},
createImpl(constructorArgs, privateData) {
  let obj = Object.create(TreeWalker.prototype);
  this.setup(obj, constructorArgs, privateData);
  return utils.implForWrapper(obj);
},
_internalSetup(obj) {
},
setup(obj, constructorArgs, privateData) {
  if (!privateData) privateData = {};
  privateData.wrapper = obj;

  this._internalSetup(obj);

  obj[impl] = new Impl.implementation(constructorArgs, privateData);
  obj[impl][utils.wrapperSymbol] = obj;
},
interface: TreeWalker,
expose: {
  Window: { TreeWalker: TreeWalker }
}

}; module.exports = iface;

const Impl = require(“../traversal/TreeWalker-impl.js”);