org.luaj.vm2.lib.ZeroArgFunction Java Examples
The following examples show how to use
org.luaj.vm2.lib.ZeroArgFunction.
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Example #1
Source File: LHttp.java From HtmlNative with Apache License 2.0 | 5 votes |
LResponse() { super(); set("header", new ZeroArgFunction() { @Override public LuaValue call() { if (mHeader == null) { return LuaValue.NIL; } return LuaString.valueOf(mHeader); } }); set("body", new ZeroArgFunction() { @Override public LuaValue call() { if (mBody == null) { return LuaValue.NIL; } return LuaString.valueOf(mBody); } }); set("status", new ZeroArgFunction() { @Override public LuaValue call() { return LuaInteger.valueOf(mStatusCode); } }); }
Example #2
Source File: LObject.java From HtmlNative with Apache License 2.0 | 5 votes |
LObject() { super(); set("type", new ZeroArgFunction() { @Override public LuaValue call() { String className = LObject.this.onObjectClassName(); if (className != null) { return LuaString.valueOf(className); } else { return LuaValue.NIL; } } }); }
Example #3
Source File: LuaOperationsTest.java From luaj with MIT License | 5 votes |
public void testFunctionClosureThreadEnv() { // set up suitable environments for execution LuaValue aaa = LuaValue.valueOf("aaa"); LuaValue eee = LuaValue.valueOf("eee"); final Globals globals = org.luaj.vm2.lib.jse.JsePlatform.standardGlobals(); LuaTable newenv = LuaValue.tableOf( new LuaValue[] { LuaValue.valueOf("a"), LuaValue.valueOf("aaa"), LuaValue.valueOf("b"), LuaValue.valueOf("bbb"), } ); LuaTable mt = LuaValue.tableOf( new LuaValue[] { LuaValue.INDEX, globals } ); newenv.setmetatable(mt); globals.set("a", aaa); newenv.set("a", eee); // function tests { LuaFunction f = new ZeroArgFunction() { public LuaValue call() { return globals.get("a");}}; assertEquals( aaa, f.call() ); } // closure tests { Prototype p = createPrototype( "return a\n", "closuretester" ); LuaClosure c = new LuaClosure(p, globals); // Test that a clusure with a custom enviroment uses that environment. assertEquals( aaa, c.call() ); c = new LuaClosure(p, newenv); assertEquals( newenv, c.upValues[0].getValue() ); assertEquals( eee, c.call() ); } }
Example #4
Source File: LuaPackage.java From Cubes with MIT License | 5 votes |
public LuaPackage(final String path) { super(new Object()); this.path = path; LuaTable metatable = new LuaTable(); metatable.rawset("__index", new TwoArgFunction() { @Override public LuaValue call(LuaValue arg1, LuaValue arg2) { if (arg2.checkjstring().equals("class")) { try { Class<?> cla = Class.forName(path); return new LuaClass(cla); } catch (ClassNotFoundException e) { throw new LuaError("No such class: " + path); } } String name = path.isEmpty() ? arg2.checkjstring() : path + "." + arg2.checkjstring(); return new LuaPackage(name); } }); metatable.rawset("__tostring", new ZeroArgFunction() { @Override public LuaValue call() { if (path.isEmpty()) return LuaValue.valueOf("[JPackage Root]"); return LuaValue.valueOf("[JPackage: " + path + "]"); } }); metatable.rawset("__metatable", LuaValue.FALSE); setmetatable(metatable); }
Example #5
Source File: SampleSandboxed.java From luaj with MIT License | 4 votes |
static void runScriptInSandbox(String script) { // Each script will have it's own set of globals, which should // prevent leakage between scripts running on the same server. Globals user_globals = new Globals(); user_globals.load(new JseBaseLib()); user_globals.load(new PackageLib()); user_globals.load(new Bit32Lib()); user_globals.load(new TableLib()); user_globals.load(new JseStringLib()); user_globals.load(new JseMathLib()); // This library is dangerous as it gives unfettered access to the // entire Java VM, so it's not suitable within this lightweight sandbox. // user_globals.load(new LuajavaLib()); // Starting coroutines in scripts will result in threads that are // not under the server control, so this libary should probably remain out. // user_globals.load(new CoroutineLib()); // These are probably unwise and unnecessary for scripts on servers, // although some date and time functions may be useful. // user_globals.load(new JseIoLib()); // user_globals.load(new JseOsLib()); // Loading and compiling scripts from within scripts may also be // prohibited, though in theory it should be fairly safe. // LoadState.install(user_globals); // LuaC.install(user_globals); // The debug library must be loaded for hook functions to work, which // allow us to limit scripts to run a certain number of instructions at a time. // However we don't wish to expose the library in the user globals, // so it is immediately removed from the user globals once created. user_globals.load(new DebugLib()); LuaValue sethook = user_globals.get("debug").get("sethook"); user_globals.set("debug", LuaValue.NIL); // Set up the script to run in its own lua thread, which allows us // to set a hook function that limits the script to a specific number of cycles. // Note that the environment is set to the user globals, even though the // compiling is done with the server globals. LuaValue chunk = server_globals.load(script, "main", user_globals); LuaThread thread = new LuaThread(user_globals, chunk); // Set the hook function to immediately throw an Error, which will not be // handled by any Lua code other than the coroutine. LuaValue hookfunc = new ZeroArgFunction() { public LuaValue call() { // A simple lua error may be caught by the script, but a // Java Error will pass through to top and stop the script. throw new Error("Script overran resource limits."); } }; final int instruction_count = 20; sethook.invoke(LuaValue.varargsOf(new LuaValue[] { thread, hookfunc, LuaValue.EMPTYSTRING, LuaValue.valueOf(instruction_count) })); // When we resume the thread, it will run up to 'instruction_count' instructions // then call the hook function which will error out and stop the script. Varargs result = thread.resume(LuaValue.NIL); System.out.println("[["+script+"]] -> "+result); }
Example #6
Source File: CommandEvent.java From Lukkit with MIT License | 4 votes |
public CommandEvent(CommandSender sender, String command, String... args) { this.set("isPlayerSender", new ZeroArgFunction() { @Override public LuaValue call() { return sender instanceof Player ? TRUE : FALSE; } }); this.set("isConsoleSender", new ZeroArgFunction() { @Override public LuaValue call() { return sender instanceof ConsoleCommandSender ? TRUE : FALSE; } }); this.set("isBlockSender", new ZeroArgFunction() { @Override public LuaValue call() { return sender instanceof BlockCommandSender ? TRUE : FALSE; } }); this.set("isEntitySender", new ZeroArgFunction() { @Override public LuaValue call() { return sender instanceof Entity ? TRUE : FALSE; } }); this.set("getSender", new ZeroArgFunction() { @Override public LuaValue call() { return CoerceJavaToLua.coerce(sender); } }); this.set("getArgs", new ZeroArgFunction() { @Override public LuaValue call() { LuaTable tbl = new LuaTable(); for (int i = 0; i < args.length; i++) tbl.set(i + 1, args[i]); return tbl; } }); this.set("getCommand", new ZeroArgFunction() { @Override public LuaValue call() { return CoerceJavaToLua.coerce(command); } }); }
Example #7
Source File: SkullWrapper.java From Lukkit with MIT License | 4 votes |
public SkullWrapper(ItemStack skullItem) { this.skull = (skullItem == null) ? new ItemStack(Material.SKULL_ITEM, 1) : skull; this.self = this; // Allows access from setOwner() since this is populate by the function. if (skullItem == null) { this.skull.setDurability((short) 3); this.meta = (SkullMeta) Bukkit.getItemFactory().getItemMeta(Material.SKULL_ITEM); } else { this.meta = (SkullMeta) this.skull.getItemMeta(); } this.set("setOwner", new OneArgFunction() { @Override public LuaValue call(LuaValue username) { meta.setOwner(username.checkjstring()); return CoerceJavaToLua.coerce(self); } }); this.set("hasOwner", new ZeroArgFunction() { @Override public LuaValue call() { return LuaValue.valueOf(meta.hasOwner()); } }); this.set("getOwner", new ZeroArgFunction() { @Override public LuaValue call() { if (meta.getOwner() == null) { return LuaValue.NIL; } return LuaValue.valueOf(meta.getOwner()); } }); this.set("getItemStack", new ZeroArgFunction() { @Override public LuaValue call() { skull.setItemMeta(meta); return CoerceJavaToLua.coerce(skull); } }); }