org.luaj.vm2.LoadState Java Examples

/**
     * Create a standard set of globals for JSE including all the libraries.
     *
     * @return Table of globals initialized with the standard JSE libraries
     * @see #debugGlobals()
     * @see JsePlatform
     * @see JmePlatform
     */
    public static Globals standardGlobals(Globals globals) {
        globals.load(new JseBaseLib());
        globals.load(new PackageLib());
        globals.load(new Bit32Lib());
        globals.load(new TableLib());
        globals.load(new StringLib());
        globals.load(new CoroutineLib());
        globals.load(new JseMathLib());
        globals.load(new JseOsLib());
//		globals.load(new JseIoLib());//安全考虑，删除for LuaView
//		globals.load(new LuajavaLib());//安全考虑，删除for LuaView
        LoadState.install(globals);
        LuaC.install(globals);
        return globals;
    }
 

/**
 * Create a standard set of globals for JSE including all the libraries.
 * 
 * @return Table of globals initialized with the standard JSE libraries
 * @see #debugGlobals()
 * @see org.luaj.vm2.lib.jse.JsePlatform
 * @see org.luaj.vm2.lib.jme.JmePlatform
 */
public static Globals standardGlobals() {
	Globals globals = new Globals();
	globals.load(new JseBaseLib());
	globals.load(new PackageLib());
	globals.load(new Bit32Lib());
	globals.load(new TableLib());
	globals.load(new StringLib());
	globals.load(new CoroutineLib());
	globals.load(new JseMathLib());
	globals.load(new JseIoLib());
	globals.load(new JseOsLib());
	globals.load(new LuajavaLib());
	LoadState.install(globals);
	LuaC.install(globals);
	return globals;		
}
 

/**
 * Create a standard set of globals for JSE including all the libraries.
 * 
 * @return Table of globals initialized with the standard JSE libraries
 * @see #debugGlobals()
 * @see org.luaj.vm2.lib.jse.JsePlatform
 * @see org.luaj.vm2.lib.jme.JmePlatform
 */
public static Globals standardGlobals() {
	Globals globals = new Globals();
	globals.load(new JseBaseLib());
	globals.load(new PackageLib());
	globals.load(new Bit32Lib());
	globals.load(new TableLib());
	globals.load(new JseStringLib());
	globals.load(new CoroutineLib());
	globals.load(new JseMathLib());
	globals.load(new JseIoLib());
	globals.load(new JseOsLib());
	globals.load(new LuajavaLib());
	LoadState.install(globals);
	LuaC.install(globals);
	return globals;
}
 

/**
 * Create a standard set of globals for JME including all the libraries.
 * 
 * @return Table of globals initialized with the standard JME libraries
 * @see #debugGlobals()
 * @see org.luaj.vm2.lib.jse.JsePlatform
 * @see org.luaj.vm2.lib.jme.JmePlatform
 */
public static Globals standardGlobals() {
	Globals globals = new Globals();
	globals.load(new BaseLib());
	globals.load(new PackageLib());
	globals.load(new Bit32Lib());
	globals.load(new OsLib());
	globals.load(new MathLib());
	globals.load(new TableLib());
	globals.load(new StringLib());
	globals.load(new CoroutineLib());
	globals.load(new JmeIoLib());
	LoadState.install(globals);
	LuaC.install(globals);
	return globals;		
}
 

private LuaEngine() {
	globals = new Globals();
	globals.load(new JseBaseLib());
	globals.load(new PackageLib());
	globals.load(new Bit32Lib());
	globals.load(new TableLib());
	globals.load(new StringLib());
	globals.load(new CoroutineLib());
	globals.load(new JseMathLib());
	globals.load(new JseIoLib());
	globals.load(new JseOsLib());
	globals.load(new MultiDexLuajavaLib());
	LoadState.install(globals);
	LuaC.install(globals);

	globals.finder = this;
	globals.set("loadResource", new resLoader());
}
 

void dumpHeader() throws IOException {
	writer.write( LoadState.LUA_SIGNATURE );
	writer.write( LoadState.LUAC_VERSION );
	writer.write( LoadState.LUAC_FORMAT );
	writer.write( IS_LITTLE_ENDIAN? 1: 0 );
	writer.write( SIZEOF_INT );
	writer.write( SIZEOF_SIZET );
	writer.write( SIZEOF_INSTRUCTION );
	writer.write( SIZEOF_LUA_NUMBER );
	writer.write( NUMBER_FORMAT );
	writer.write( LoadState.LUAC_TAIL );
}
 

/**
 * load a prototype
 *
 * @param scriptFile
 * @return
 */
private Prototype loadPrototype( ScriptFile scriptFile) {
    if (LoadState.instance != null && scriptFile != null) {
        try {
            return LoadState.instance.undump(new BufferedInputStream(new ByteArrayInputStream(scriptFile.scriptData)), scriptFile.getFilePath());//TODO 低端机性能上可以进一步优化
        } catch (LuaError error) {
        } catch (Exception e) {
        }
    }
    return null;
}
 

void dumpHeader() throws IOException {
	writer.write( LoadState.LUA_SIGNATURE );
	writer.write( LoadState.LUAC_VERSION );
	writer.write( LoadState.LUAC_FORMAT );
	writer.write( IS_LITTLE_ENDIAN? 1: 0 );
	writer.write( SIZEOF_INT );
	writer.write( SIZEOF_SIZET );
	writer.write( SIZEOF_INSTRUCTION );
	writer.write( SIZEOF_LUA_NUMBER );
	writer.write( NUMBER_FORMAT );
	writer.write( LoadState.LUAC_TAIL );
}
 

/**
 * Create a standard set of globals for JSE including all the libraries.
 *
 * @return Table of globals initialized with the standard JSE libraries
 * @see #debugGlobals()
 * @see org.luaj.vm2.lib.jse.JsePlatform
 * @see org.luaj.vm2.lib.jme.JmePlatform
 */
public static Globals standardGlobals() {
    Globals globals = new Globals();
    globals.load(new JseBaseLib());
    globals.load(new PackageLib());
    globals.load(new Bit32Lib());
    globals.load(new TableLib());
    globals.load(new StringLib());
    globals.load(new JseMathLib());
    globals.load(new JseOsLib());
    LoadState.install(globals);
    LuaC.install(globals);
    return globals;
}
 

void dumpHeader() throws IOException {
	writer.write( LoadState.LUA_SIGNATURE );
	writer.write( LoadState.LUAC_VERSION );
	writer.write( LoadState.LUAC_FORMAT );
	writer.write( IS_LITTLE_ENDIAN? 1: 0 );
	writer.write( SIZEOF_INT );
	writer.write( SIZEOF_SIZET );
	writer.write( SIZEOF_INSTRUCTION );
	writer.write( SIZEOF_LUA_NUMBER );
	writer.write( NUMBER_FORMAT );
	writer.write( LoadState.LUAC_TAIL );
}
 

public void init() {
	// Find the script to load from the applet parameters.
	String script = getParameter(script_parameter);
	if (script == null)
		script = default_script;
	System.out.println("Loading " + script);

	// Construct globals specific to the applet platform.
	globals = new Globals();
	globals.load(new JseBaseLib());
	globals.load(new PackageLib());
	globals.load(new Bit32Lib());
	globals.load(new TableLib());
	globals.load(new JseStringLib());
	globals.load(new CoroutineLib());
	globals.load(new JseMathLib());
	globals.load(new JseIoLib());
	globals.load(new JseOsLib());
	globals.load(new AppletLuajavaLib());
	LoadState.install(globals);
	LuaC.install(globals);

	// Use custom resource finder.
	globals.finder = this;

	// Look up and save the handy pcall method.
	pcall = globals.get("pcall");

	// Load and execute the script, supplying this Applet as the only
	// argument.
	globals.loadfile(script).call(CoerceJavaToLua.coerce(this));
}
 

void dumpHeader() throws IOException {
	writer.write( LoadState.LUA_SIGNATURE );
	writer.write( LoadState.LUAC_VERSION );
	writer.write( LoadState.LUAC_FORMAT );
	writer.write( IS_LITTLE_ENDIAN? 1: 0 );
	writer.write( SIZEOF_INT );
	writer.write( SIZEOF_SIZET );
	writer.write( SIZEOF_INSTRUCTION );
	writer.write( SIZEOF_LUA_NUMBER );
	writer.write( NUMBER_FORMAT );
	writer.write( LoadState.LUAC_TAIL );
}
 

public static void main(String[] args) {
	// Create server globals with just enough library support to compile user scripts.
	server_globals = new Globals();
	server_globals.load(new JseBaseLib());
	server_globals.load(new PackageLib());
	server_globals.load(new JseStringLib());

	// To load scripts, we occasionally need a math library in addition to compiler support.
	// To limit scripts using the debug library, they must be closures, so we only install LuaC.
	server_globals.load(new JseMathLib());
	LoadState.install(server_globals);
	LuaC.install(server_globals);

	// Set up the LuaString metatable to be read-only since it is shared across all scripts.
	LuaString.s_metatable = new ReadOnlyLuaTable(LuaString.s_metatable);

	// Example normal scripts that behave as expected.
	runScriptInSandbox( "return 'foo'" );
	runScriptInSandbox( "return ('abc'):len()" );
	runScriptInSandbox( "return getmetatable('abc')" );
	runScriptInSandbox( "return getmetatable('abc').len" );
	runScriptInSandbox( "return getmetatable('abc').__index" );

	// Example user scripts that attempt rogue operations, and will fail.
	runScriptInSandbox( "return setmetatable('abc', {})" );
	runScriptInSandbox( "getmetatable('abc').len = function() end" );
	runScriptInSandbox( "getmetatable('abc').__index = {}" );
	runScriptInSandbox( "getmetatable('abc').__index.x = 1" );
	runScriptInSandbox( "while true do print('loop') end" );
	
	// Example use of other shared metatables, which should also be made read-only.
	// This toy example allows booleans to be added to numbers.
	runScriptInSandbox( "return 5 + 6, 5 + true, false + 6" );
	LuaBoolean.s_metatable = new ReadOnlyLuaTable(LuaValue.tableOf(new LuaValue[] {
			LuaValue.ADD, new TwoArgFunction() {
				public LuaValue call(LuaValue x, LuaValue y) {
					return LuaValue.valueOf(
							(x == TRUE ? 1.0 : x.todouble()) +
							(y == TRUE ? 1.0 : y.todouble()) );
				}
			},
	}));
	runScriptInSandbox( "return 5 + 6, 5 + true, false + 6" );
}