82 lines
2.1 KiB
JavaScript
82 lines
2.1 KiB
JavaScript
/**
|
|
* @fileoverview SourceCodeVisitor class
|
|
* @author Nicholas C. Zakas
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Helpers
|
|
//-----------------------------------------------------------------------------
|
|
|
|
const emptyArray = Object.freeze([]);
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Exports
|
|
//------------------------------------------------------------------------------
|
|
|
|
/**
|
|
* A structure to hold a list of functions to call for a given name.
|
|
* This is used to allow multiple rules to register functions for a given name
|
|
* without having to know about each other.
|
|
*/
|
|
class SourceCodeVisitor {
|
|
/**
|
|
* The functions to call for a given name.
|
|
* @type {Map<string, Function[]>}
|
|
*/
|
|
#functions = new Map();
|
|
|
|
/**
|
|
* Adds a function to the list of functions to call for a given name.
|
|
* @param {string} name The name of the function to call.
|
|
* @param {Function} func The function to call.
|
|
* @returns {void}
|
|
*/
|
|
add(name, func) {
|
|
if (this.#functions.has(name)) {
|
|
this.#functions.get(name).push(func);
|
|
} else {
|
|
this.#functions.set(name, [func]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the list of functions to call for a given name.
|
|
* @param {string} name The name of the function to call.
|
|
* @returns {Function[]} The list of functions to call.
|
|
*/
|
|
get(name) {
|
|
if (this.#functions.has(name)) {
|
|
return this.#functions.get(name);
|
|
}
|
|
|
|
return emptyArray;
|
|
}
|
|
|
|
/**
|
|
* Iterates over all names and calls the callback with the name.
|
|
* @param {(name:string) => void} callback The callback to call for each name.
|
|
* @returns {void}
|
|
*/
|
|
forEachName(callback) {
|
|
this.#functions.forEach((funcs, name) => {
|
|
callback(name);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Calls the functions for a given name with the given arguments.
|
|
* @param {string} name The name of the function to call.
|
|
* @param {any[]} args The arguments to pass to the function.
|
|
* @returns {void}
|
|
*/
|
|
callSync(name, ...args) {
|
|
if (this.#functions.has(name)) {
|
|
this.#functions.get(name).forEach(func => func(...args));
|
|
}
|
|
}
|
|
}
|
|
|
|
module.exports = { SourceCodeVisitor };
|