Examples of org.luaj.vm2.LuaValue.invoke()

org.luaj.vm2.LuaValue.invoke()
Call {@link this} with 0 arguments, including metatag processing, and retain all return values in a {@link Varargs}.
If {@code this} is a {@link LuaFunction}, call it, and return all values. Otherwise, look for the {@link CALL} metatag and call that.
To get a particular return value, us {@link Varargs#arg(int)}
To call {@link this} as a method call, use {@link #invokemethod(LuaValue)} instead. @return All return values as a {@link Varargs} instance. @throws LuaError if not a function and {@link CALL} is not defined, or the invoked function throws a {@link LuaError} or the invoked closure throw a lua {@code error} @see #call() @see #invoke(Varargs) @see #invokemethod(String) @see #invokemethod(LuaValue)

      return;
    }
    
    Prototype prototype = LuaCache.loadPackage(packageName, system);
    LuaClosure function = new LuaClosure(prototype, globals);
    function.invoke();
    
    packageLib.loaded.set(packageName, globals);
  }


  public void call(String functionName, LuaValue[] args) {

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      return;
    }
    
    Prototype prototype = LuaCache.loadPackage(packageName, system);
    LuaClosure function = new LuaClosure(prototype, globals);
    function.invoke();
    
    loadedTable.set(packageName, LuaValue.TRUE);
  }


  public void call(String functionName, LuaValue[] args) {

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      return;
    }
    
    Prototype prototype = LuaCache.loadPackage(packageName, system);
    LuaClosure function = new LuaClosure(prototype, globals);
    function.invoke();
    
    loadedTable.set(packageName, LuaValue.TRUE);
  }


  public void call(String functionName, LuaValue[] args) {

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      return;
    }
    
    Prototype prototype = LuaCache.loadPackage(packageName, system);
    LuaClosure function = new LuaClosure(prototype, globals);
    function.invoke();
    
    loadedTable.set(packageName, LuaValue.TRUE);
  }


  public void call(String functionName, LuaValue[] args) {

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      return;
    }
    
    Prototype prototype = LuaCache.loadPackage(packageName, system);
    LuaClosure function = new LuaClosure(prototype, globals);
    function.invoke();
    
    loadedTable.set(packageName, LuaValue.TRUE);
  }


  public void call(String functionName, LuaValue[] args) {

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    public Object eval(ScriptContext context) throws ScriptException {
          Bindings b = context.getBindings(ScriptContext.ENGINE_SCOPE);
          LuaFunction f = newFunctionInstance();
          ClientBindings cb = new ClientBindings(b);
          f.setfenv(cb.env);
      Varargs result = f.invoke(LuaValue.NONE);
      cb.copyGlobalsToBindings();
      return result;
    }
  }

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  public void testLuaErrorCause() {
    String script = "luajava.bindClass( \""+SomeClass.class.getName()+"\"):someMethod()";
    LuaValue chunk = _G.get("loadstring").call(LuaValue.valueOf(script));
    try {
      chunk.invoke(LuaValue.NONE);
      fail( "call should not have succeeded" );
    } catch ( LuaError lee ) {
      Throwable c = lee.getCause();
      assertEquals( SomeException.class, c.getClass() );
    }

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      // call with arguments
      LuaValue[] vargs = new LuaValue[args.length];
      for ( int i=0; i<args.length; i++ )
        vargs[i] = LuaValue.valueOf(args[i]);
      Varargs cargs = LuaValue.varargsOf(vargs);
      Varargs v = chunk.invoke(cargs);
      
      // print the result
      for ( int i=1; i<=v.narg(); i++ )
        System.out.println("result["+i+"]: "+v.arg(i));
    } catch ( Throwable e ) {

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    assertEquals( "uniq()",                   uniq.call(SOMEB).tojstring() );
    assertEquals( "uniqs(string:abc)",        uniqs.call(SOMEB,ABC).tojstring() );
    assertEquals( "uniqi(int:1)",             uniqi.call(SOMEB,ONE).tojstring() );
    assertEquals( "uniqsi(string:abc,int:1)", uniqsi.call(SOMEB,ABC,ONE).tojstring() );
    assertEquals( "uniqis(int:1,string:abc)", uniqis.call(SOMEB,ONE,ABC).tojstring() );
    assertEquals( "uniqis(int:1,string:abc)", uniqis.invoke(LuaValue.varargsOf(new LuaValue[] {SOMEB,ONE,ABC,ONE})).arg1().tojstring() );
  }
  public void testOverloadedMethodAttributeCoercible() {
    B b = new B();
    JavaInstance ib = new JavaInstance(b);
    LuaValue p = ib.get("pick");

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    assertEquals( "pick()",           p.call(SOMEB).tojstring() );
    assertEquals( "pick(string:abc)", p.call(SOMEB,ABC).tojstring() );
    assertEquals( "pick(int:1)",      p.call(SOMEB,ONE).tojstring() );
    assertEquals( "pick(string:abc,int:1)", p.call(SOMEB,ABC,ONE).tojstring() );
    assertEquals( "pick(int:1,string:abc)", p.call(SOMEB,ONE,ABC).tojstring() );
    assertEquals( "pick(int:1,string:abc)", p.invoke(LuaValue.varargsOf(new LuaValue[] {SOMEB,ONE,ABC,ONE})).arg1().tojstring() );
  }
  public void testUnboundOverloadedMethodAttributeCoercible() {
    B b = new B();
    JavaInstance ib = new JavaInstance(b);
    LuaValue p = ib.get("pick");

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