A Map + Expando implementation for Groovy

anything.groovy

import groovy.json.*;

class MyBean extends Expando {
	def methodMissing(String name, def args) {
		if(args.size() == 0) {
			super.getProperty(name)
		} else if(args.size() == 1) {
			def value = args[0];
			def result = value;

			if(value instanceof Closure) {
				result = new MyBean();
				value.delegate = result;
				value.resolveStrategy = Closure.DELEGATE_FIRST;
				value.call(result);
			}

			super.setProperty(name, result);
		} else {
			throw new MissingMethodException(name, MyBean.class, args)
		}
	}

	def toMap() {
		return this.getProperties();
	}
}

def bean = new MyBean();

println bean.foo
bean.foo = "Bar"
println bean.foo
println bean.foo()
bean.foo("Hello")
println bean.foo
println bean.foo()

bean.foo {
	hello 'World'
}
bean.foo.bar = "Hey"

println bean.foo

bean.foo.hello = "Blah!"
println bean

println bean.toMap()