Examples of org.luaj.vm2.lib.VarArgFunction

org.luaj.vm2.lib.OneArgFunction
Abstract base class for Java function implementations that takes varaiable arguments and returns multiple return values.
Subclasses need only implement {@link LuaValue#invoke(Varargs)} to complete this class, simplifying development. All other uses of {@link #call(LuaValue)}, {@link #invoke()},etc, are routed through this method by this class, converting arguments to {@linnk Varargs} and dropping or extending return values with {@code nil} values as required.
If between one and three arguments are required, and only one return value is returned, {@link ZeroArgFunction}, {@link OneArgFunction}, {@link TwoArgFunction}, or {@link ThreeArgFunction}.
See {@link LibFunction} for more information on implementation libraries and library functions. @see #invoke(Varargs) @see LibFunction @see ZeroArgFunction @see OneArgFunction @see TwoArgFunction @see ThreeArgFunction


                // Traverse the directions table.
                LuaValue key = LuaValue.NIL;
                while (true) {


                    Varargs keyValue = directionsTable.next(key);
                    key = keyValue.arg1();
                    if (key.isnil()) {
                        break;
                    }
                    LuaValue directionTable = keyValue.arg(2);


                    int x = directionTable.get("x").checkint();
                    int y = directionTable.get("y").checkint();
                    int frameWidth = directionTable.get("frame_width").checkint();
                    int frameHeight = directionTable.get("frame_height").checkint();

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        final int testCount        = tests.get("count").toint();
        final LuaValue provideFunc = tests.get("provide");
        final LuaValue runFunc     = tests.get("run");


        for (int i=1; i<testCount+1; i++) {
            final Varargs provideValue = provideFunc.invoke(valueOf(i));
            final LuaValue name = provideValue.arg(2);
            final String expected = provideValue.arg(3).checkjstring();


            Description testDescription = Description.createTestDescription(getClass(), name.toString());


            if (isIgnored(testDescription)) {
                notifier.fireTestIgnored(testDescription);

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    packageLib = new PackageLib();
    globals.load(packageLib);
    //globals.load(new Bit32Lib()); // not needed for 5.1 compatibility  
    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());
    globals.load(new DebugLib());

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    globals.load(new CoroutineLib());
    globals.load(new JseMathLib());
    globals.load(new JseIoLib());
    globals.load(new JseOsLib());
    globals.load(new LuajavaLib());
    globals.load(new DebugLib());
    globals.load(new LuaBytesLib(this));
    globals.load(new LuaListLib(this));
    globals.load(new LuaMapLib(this));
    globals.load(new LuaStreamLib(this));
    LuaC.install();

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        return table;
    }


    private LuaValue getUrl() {


        return new LibFunction() {
            /**
             *  $text, $which, $query = null, $proto = null
             */
            @Override public Varargs invoke(Varargs args) {
                return NIL;

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         * @param $ns           string|int Namespace
         * @param $text         string Title text
         * @param $fragment     string URI fragment
         * @param $interwiki    string Interwiki code
         */
        return new LibFunction() {
            @Override
            public Varargs invoke(Varargs args) {
                LuaValue ns    = args.arg(1);
                LuaValue title = args.arg(2);
                LuaValue fragment = args.arg(3);

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        }
        return frame;
    }


    private LuaValue getFrameTitle() {
        return new OneArgFunction() {
            @Override
            public LuaValue call(LuaValue arg) {
                return valueOf("getFrameTitleNotImplemented");
            }
        };

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            }
        };
    }


    private LuaValue getAllExpandedArguments() {
        return new OneArgFunction() {
            @Override public LuaValue call(LuaValue frameId) {
                return getFrameById(frameId).getAllArguments();
            }
        };
    }

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            }
        };
    }


    private LuaValue frameExists() {
        return new OneArgFunction() {
            @Override
            public LuaValue call(LuaValue arg) {
                // logger.debug("frameExists(" + arg + ")");
                return TRUE;
            }

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            }
        };
    }


    private OneArgFunction loadPackage() {
        return new OneArgFunction() {
            @Override
            public LuaValue call(LuaValue arg) {
                String name = arg.tojstring();


                InputStream is = loadLocally(name);

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