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Mini Shell
Mini Shell
import { ElementType, isTag as isTagRaw } from "domelementtype";
/**
* This object will be used as the prototype for Nodes when creating a
* DOM-Level-1-compliant structure.
*/
export class Node {
constructor() {
/** Parent of the node */
this.parent = null;
/** Previous sibling */
this.prev = null;
/** Next sibling */
this.next = null;
/** The start index of the node. Requires `withStartIndices` on the handler to be `true. */
this.startIndex = null;
/** The end index of the node. Requires `withEndIndices` on the handler to be `true. */
this.endIndex = null;
}
// Read-write aliases for properties
/**
* Same as {@link parent}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get parentNode() {
return this.parent;
}
set parentNode(parent) {
this.parent = parent;
}
/**
* Same as {@link prev}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get previousSibling() {
return this.prev;
}
set previousSibling(prev) {
this.prev = prev;
}
/**
* Same as {@link next}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get nextSibling() {
return this.next;
}
set nextSibling(next) {
this.next = next;
}
/**
* Clone this node, and optionally its children.
*
* @param recursive Clone child nodes as well.
* @returns A clone of the node.
*/
cloneNode(recursive = false) {
return cloneNode(this, recursive);
}
}
/**
* A node that contains some data.
*/
export class DataNode extends Node {
/**
* @param data The content of the data node
*/
constructor(data) {
super();
this.data = data;
}
/**
* Same as {@link data}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get nodeValue() {
return this.data;
}
set nodeValue(data) {
this.data = data;
}
}
/**
* Text within the document.
*/
export class Text extends DataNode {
constructor() {
super(...arguments);
this.type = ElementType.Text;
}
get nodeType() {
return 3;
}
}
/**
* Comments within the document.
*/
export class Comment extends DataNode {
constructor() {
super(...arguments);
this.type = ElementType.Comment;
}
get nodeType() {
return 8;
}
}
/**
* Processing instructions, including doc types.
*/
export class ProcessingInstruction extends DataNode {
constructor(name, data) {
super(data);
this.name = name;
this.type = ElementType.Directive;
}
get nodeType() {
return 1;
}
}
/**
* A `Node` that can have children.
*/
export class NodeWithChildren extends Node {
/**
* @param children Children of the node. Only certain node types can have children.
*/
constructor(children) {
super();
this.children = children;
}
// Aliases
/** First child of the node. */
get firstChild() {
var _a;
return (_a = this.children[0]) !== null && _a !== void 0 ? _a : null;
}
/** Last child of the node. */
get lastChild() {
return this.children.length > 0
? this.children[this.children.length - 1]
: null;
}
/**
* Same as {@link children}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get childNodes() {
return this.children;
}
set childNodes(children) {
this.children = children;
}
}
export class CDATA extends NodeWithChildren {
constructor() {
super(...arguments);
this.type = ElementType.CDATA;
}
get nodeType() {
return 4;
}
}
/**
* The root node of the document.
*/
export class Document extends NodeWithChildren {
constructor() {
super(...arguments);
this.type = ElementType.Root;
}
get nodeType() {
return 9;
}
}
/**
* An element within the DOM.
*/
export class Element extends NodeWithChildren {
/**
* @param name Name of the tag, eg. `div`, `span`.
* @param attribs Object mapping attribute names to attribute values.
* @param children Children of the node.
*/
constructor(name, attribs, children = [], type = name === "script"
? ElementType.Script
: name === "style"
? ElementType.Style
: ElementType.Tag) {
super(children);
this.name = name;
this.attribs = attribs;
this.type = type;
}
get nodeType() {
return 1;
}
// DOM Level 1 aliases
/**
* Same as {@link name}.
* [DOM spec](https://dom.spec.whatwg.org)-compatible alias.
*/
get tagName() {
return this.name;
}
set tagName(name) {
this.name = name;
}
get attributes() {
return Object.keys(this.attribs).map((name) => {
var _a, _b;
return ({
name,
value: this.attribs[name],
namespace: (_a = this["x-attribsNamespace"]) === null || _a === void 0 ? void 0 : _a[name],
prefix: (_b = this["x-attribsPrefix"]) === null || _b === void 0 ? void 0 : _b[name],
});
});
}
}
/**
* @param node Node to check.
* @returns `true` if the node is a `Element`, `false` otherwise.
*/
export function isTag(node) {
return isTagRaw(node);
}
/**
* @param node Node to check.
* @returns `true` if the node has the type `CDATA`, `false` otherwise.
*/
export function isCDATA(node) {
return node.type === ElementType.CDATA;
}
/**
* @param node Node to check.
* @returns `true` if the node has the type `Text`, `false` otherwise.
*/
export function isText(node) {
return node.type === ElementType.Text;
}
/**
* @param node Node to check.
* @returns `true` if the node has the type `Comment`, `false` otherwise.
*/
export function isComment(node) {
return node.type === ElementType.Comment;
}
/**
* @param node Node to check.
* @returns `true` if the node has the type `ProcessingInstruction`, `false` otherwise.
*/
export function isDirective(node) {
return node.type === ElementType.Directive;
}
/**
* @param node Node to check.
* @returns `true` if the node has the type `ProcessingInstruction`, `false` otherwise.
*/
export function isDocument(node) {
return node.type === ElementType.Root;
}
/**
* @param node Node to check.
* @returns `true` if the node has children, `false` otherwise.
*/
export function hasChildren(node) {
return Object.prototype.hasOwnProperty.call(node, "children");
}
/**
* Clone a node, and optionally its children.
*
* @param recursive Clone child nodes as well.
* @returns A clone of the node.
*/
export function cloneNode(node, recursive = false) {
let result;
if (isText(node)) {
result = new Text(node.data);
}
else if (isComment(node)) {
result = new Comment(node.data);
}
else if (isTag(node)) {
const children = recursive ? cloneChildren(node.children) : [];
const clone = new Element(node.name, { ...node.attribs }, children);
children.forEach((child) => (child.parent = clone));
if (node.namespace != null) {
clone.namespace = node.namespace;
}
if (node["x-attribsNamespace"]) {
clone["x-attribsNamespace"] = { ...node["x-attribsNamespace"] };
}
if (node["x-attribsPrefix"]) {
clone["x-attribsPrefix"] = { ...node["x-attribsPrefix"] };
}
result = clone;
}
else if (isCDATA(node)) {
const children = recursive ? cloneChildren(node.children) : [];
const clone = new CDATA(children);
children.forEach((child) => (child.parent = clone));
result = clone;
}
else if (isDocument(node)) {
const children = recursive ? cloneChildren(node.children) : [];
const clone = new Document(children);
children.forEach((child) => (child.parent = clone));
if (node["x-mode"]) {
clone["x-mode"] = node["x-mode"];
}
result = clone;
}
else if (isDirective(node)) {
const instruction = new ProcessingInstruction(node.name, node.data);
if (node["x-name"] != null) {
instruction["x-name"] = node["x-name"];
instruction["x-publicId"] = node["x-publicId"];
instruction["x-systemId"] = node["x-systemId"];
}
result = instruction;
}
else {
throw new Error(`Not implemented yet: ${node.type}`);
}
result.startIndex = node.startIndex;
result.endIndex = node.endIndex;
if (node.sourceCodeLocation != null) {
result.sourceCodeLocation = node.sourceCodeLocation;
}
return result;
}
function cloneChildren(childs) {
const children = childs.map((child) => cloneNode(child, true));
for (let i = 1; i < children.length; i++) {
children[i].prev = children[i - 1];
children[i - 1].next = children[i];
}
return children;
}
Zerion Mini Shell 1.0