Examples of groovy.lang.Closure

groovy.lang.Closure
Represents any closure object in Groovy.
Groovy allows instances of Closures to be called in a short form. For example:
```
 def a = 1 def c = {a} assert c() == 1 
```
To be able to use a Closure in this way with your own subclass, you need to provide a doCall method with any signature you want to. This ensures that {@link #getMaximumNumberOfParameters()} and {@link #getParameterTypes()} will work too without any additional code. If no doCall method is provided a closure must be used in its long form like
```
 def a = 1 def c = {a} assert c.call() == 1 
```
@author James Strachan @author John Wilson @author Jochen Theodorou @author Graeme Rocher @author Paul King @version $Revision: 22366 $

                    public CachedClass getDeclaringClass() {
                        return ReflectionCache.getCachedClass(declaringClass);
                    }


                    public Object invoke(Object object, Object[] arguments) {
                        Closure cloned = (Closure) closure.clone();
                        cloned.setDelegate(object);
                        arguments = coerceArgumentsToClasses(arguments);
                        return InvokerHelper.invokeMethod(cloned, "call", arguments);
                    }
                };
                res.add(adjustParamTypesForStdMethods(metaMethod, name));

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    }


    public Object invokeCustom(Object proxy, Method method, Object[] args)
            throws Throwable {
        Map m = (Map) getDelegate();
        Closure cl = (Closure) m.get(method.getName());
        if (cl == null) {
            throw new UnsupportedOperationException();
        }
        return cl.call(args);
    }

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        assertTrue(obj.getMetaClass().getAttribute(obj, "x") == newX3);
    }


    public void testObjectSupportNameHandlingWitnClosureValues() {
        final Tt1cgo obj = new Tt1cgo();  // Test subclass of GroovyObjectSupport
        final Closure newX = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x";
            }
        };
        final Closure newX1 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x1";
            }
        };
        final Closure newX2 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x2";
            }
        };
        final Closure newX3 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x3";
            }
        };


        assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
        assertTrue(obj.invokeMethod("x", new Object[]{}) == obj.x());


        obj.setProperty("x", newX);
        obj.getMetaClass().setAttribute(obj, "x", newX1);


        assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());


        obj.setX(newX2);
        obj.x = newX3;


        assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
    }

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    }


    public void testObjectSupportNameHandlingWitnClosureValuesi() {
        final Tt1cgo obj = new Tt1cgo() {
        };  // repeat test with subclass
        final Closure newX = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x";
            }
        };
        final Closure newX1 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x1";
            }
        };
        final Closure newX2 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x2";
            }
        };
        final Closure newX3 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x3";
            }
        };


        assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
        assertTrue(obj.invokeMethod("x", new Object[]{}) == obj.x());


        obj.setProperty("x", newX);
        obj.getMetaClass().setAttribute(obj, "x", newX1);


        assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());


        obj.setX(newX2);
        obj.x = newX3;


        assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
    }

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        assertTrue(obj.getMetaClass().getAttribute(obj, "x") == newX3);
    }


    public void testMetaClassNameHandlingWithClosures() {
        final Tt1cgi obj = new Tt1cgi();  // Test class implementing GroovyObject
        final Closure newX = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x";
            }
        };
        final Closure newX1 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x1";
            }
        };
        final Closure newX2 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x2";
            }
        };
        final Closure newX3 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x3";
            }
        };


        assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
        assertTrue(obj.invokeMethod("x", new Object[]{}) == obj.x());


        obj.setProperty("x", newX);
        obj.getMetaClass().setAttribute(obj, "x", newX1);


        assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());


        obj.setX(newX2);
        obj.x = newX3;


        assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
    }

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    }


    public void testMetaClassNameHandlingWithClosures1() {
        final Tt1cgi obj = new Tt1cgi() {
        };  // repeat test with subclass
        final Closure newX = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x";
            }
        };
        final Closure newX1 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x1";
            }
        };
        final Closure newX2 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x2";
            }
        };
        final Closure newX3 = new Closure(null) {
            public Object doCall(final Object params) {
                return "new x3";
            }
        };


        assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
        assertTrue(obj.invokeMethod("x", new Object[]{}) == obj.x());


        obj.setProperty("x", newX);
        obj.getMetaClass().setAttribute(obj, "x", newX1);


        assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());


        obj.setX(newX2);
        obj.x = newX3;


        assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
        assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
    }

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        appendNode(newValue);
        return this;
    }
    
    public Object plus(final Object newValue) {
        this.replaceNode(new Closure(this) {
            public void doCall(Object[] args) {
            final GroovyObject delegate = (GroovyObject)getDelegate();
             
                delegate.getProperty("mkp");
                delegate.invokeMethod("yield", args);

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    public boolean isEmpty() {
        return size() == 0;
    }
    
    public Closure getBody() {
        return new Closure(this.parent(),this) {
            public void doCall(Object[] args) {
                final GroovyObject delegate = (GroovyObject)getDelegate();
                final GPathResult thisObject = (GPathResult)getThisObject();


                Node node = (Node)thisObject.getAt(0);

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        Closure handler;


        public EventTriggerFullBinding(final SourceBinding sourceBinding, TargetBinding targetBinding) {
            setSourceBinding(sourceBinding);
            setTargetBinding(targetBinding);
            handler = new Closure(triggerBean) {
                public Object call(Object[] params) {
                    if (sourceBinding instanceof ClosureSourceBinding) {
                        ((ClosureSourceBinding)sourceBinding).setClosureArguments(params);
                    }
                    update();

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        final ServletBinding binding = new ServletBinding(request, response, servletContext);
        setVariables(binding);


        // Run the script
        try {
            Closure closure = new Closure(gse) {


                public Object call() {
                    try {
                        return ((GroovyScriptEngine) getDelegate()).run(scriptUri, binding);
                    } catch (ResourceException e) {

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