src/v5/OutputBuilders/JsArrBuilder.js
const {buildOptions,registerCommonValueParsers} = require("./ParserOptionsBuilder");
class OutputBuilder{
constructor(options){
this.options = buildOptions(options);
this.registeredParsers = registerCommonValueParsers();
}
registerValueParser(name,parserInstance){//existing name will override the parser without warning
this.registeredParsers[name] = parserInstance;
}
getInstance(parserOptions){
return new JsArrBuilder(parserOptions, this.options, this.registeredParsers);
}
}
const rootName = '!js_arr';
const BaseOutputBuilder = require("./BaseOutputBuilder");
class JsArrBuilder extends BaseOutputBuilder{
constructor(parserOptions, options,registeredParsers) {
super();
this.tagsStack = [];
this.parserOptions = parserOptions;
this.options = options;
this.registeredParsers = registeredParsers;
this.root = new Node(rootName);
this.currentNode = this.root;
this.attributes = {};
}
addTag(tag){
//when a new tag is added, it should be added as child of current node
//TODO: shift this check to the parser
if(tag.name === "__proto__") tag.name = "#__proto__";
this.tagsStack.push(this.currentNode);
this.currentNode = new Node(tag.name, this.attributes);
this.attributes = {};
}
/**
* Check if the node should be added by checking user's preference
* @param {Node} node
* @returns boolean: true if the node should not be added
*/
closeTag(){
const node = this.currentNode;
this.currentNode = this.tagsStack.pop(); //set parent node in scope
if(this.options.onClose !== undefined){
//TODO TagPathMatcher
const resultTag = this.options.onClose(node,
new TagPathMatcher(this.tagsStack,node));
if(resultTag) return;
}
this.currentNode.child.push(node); //to parent node
}
//Called by parent class methods
_addChild(key, val){
// if(key === "__proto__") tagName = "#__proto__";
this.currentNode.child.push( {[key]: val });
// this.currentNode.leafType = false;
}
/**
* Add text value child node
* @param {string} text
*/
addValue(text){
this.currentNode.child.push( {[this.options.nameFor.text]: this.parseValue(text, this.options.tags.valueParsers) });
}
addPi(name){
//TODO: set pi flag
if(!this.options.ignorePiTags){
const node = new Node(name, this.attributes);
this.currentNode[":@"] = this.attributes;
this.currentNode.child.push(node);
}
this.attributes = {};
}
getOutput(){
return this.root.child[0];
}
}
class Node{
constructor(tagname, attributes){
this.tagname = tagname;
this.child = []; //nested tags, text, cdata, comments
if(attributes && Object.keys(attributes).length > 0)
this[":@"] = attributes;
}
}
module.exports = OutputBuilder;