chushihua

node_modules/webpack/lib/dependencies/LocalModulesHelpers.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const LocalModule = require("./LocalModule");
+const LocalModulesHelpers = exports;
+
+const lookup = (parent, mod) => {
+	if(mod.charAt(0) !== ".") return mod;
+
+	var path = parent.split("/"),
+		segs = mod.split("/");
+	path.pop();
+
+	for(let i = 0; i < segs.length; i++) {
+		const seg = segs[i];
+		if(seg === "..") path.pop();
+		else if(seg !== ".") path.push(seg);
+	}
+
+	return path.join("/");
+};
+
+LocalModulesHelpers.addLocalModule = (state, name) => {
+	if(!state.localModules) state.localModules = [];
+	const m = new LocalModule(state.module, name, state.localModules.length);
+	state.localModules.push(m);
+	return m;
+};
+
+LocalModulesHelpers.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;
+};
+
+module.exports = LocalModulesHelpers;