69 lines
1.6 KiB
JavaScript
69 lines
1.6 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const LocalModule = require("./LocalModule");
|
|
|
|
/** @typedef {import("../javascript/JavascriptParser").ParserState} ParserState */
|
|
|
|
/**
|
|
* @param {string} parent parent module
|
|
* @param {string} mod module to resolve
|
|
* @returns {string} resolved module
|
|
*/
|
|
const lookup = (parent, mod) => {
|
|
if (mod.charAt(0) !== ".") return mod;
|
|
|
|
const path = parent.split("/");
|
|
const segments = mod.split("/");
|
|
path.pop();
|
|
|
|
for (let i = 0; i < segments.length; i++) {
|
|
const seg = segments[i];
|
|
if (seg === "..") {
|
|
path.pop();
|
|
} else if (seg !== ".") {
|
|
path.push(seg);
|
|
}
|
|
}
|
|
|
|
return path.join("/");
|
|
};
|
|
|
|
/**
|
|
* @param {ParserState} state parser state
|
|
* @param {string} name name
|
|
* @returns {LocalModule} local module
|
|
*/
|
|
module.exports.addLocalModule = (state, name) => {
|
|
if (!state.localModules) {
|
|
state.localModules = [];
|
|
}
|
|
const m = new LocalModule(name, state.localModules.length);
|
|
state.localModules.push(m);
|
|
return m;
|
|
};
|
|
|
|
/**
|
|
* @param {ParserState} state parser state
|
|
* @param {string} name name
|
|
* @param {string=} namedModule named module
|
|
* @returns {LocalModule | null} local module or null
|
|
*/
|
|
module.exports.getLocalModule = (state, name, namedModule) => {
|
|
if (!state.localModules) return null;
|
|
if (namedModule) {
|
|
// resolve dependency name relative to the defining named module
|
|
name = lookup(namedModule, name);
|
|
}
|
|
for (let i = 0; i < state.localModules.length; i++) {
|
|
if (state.localModules[i].name === name) {
|
|
return state.localModules[i];
|
|
}
|
|
}
|
|
return null;
|
|
};
|