Script that performs method invocations and property access like groovy.lang.Closure does.

DelegatingScript is a convenient basis for loading a custom-defined DSL as a Script, then execute it. The following sample code illustrates how to do it:

class MyDSL {
    public void foo(int x, int y, Closure z) { ... }
    public void setBar(String a) { ... }
}

CompilerConfiguration cc = new CompilerConfiguration();
cc.setScriptBaseClass(DelegatingScript.class.getName());
GroovyShell sh = new GroovyShell(cl,new Binding(),cc);
DelegatingScript script = (DelegatingScript)sh.parse(new File("my.dsl"))
script.setDelegate(new MyDSL());
script.run();

my.dsl can look like this:

foo(1,2) {
    ....
}
bar = ...;

DelegatingScript does this by delegating property access and method invocation to the delegate object.

More formally speaking, given the following script:

a = 1;
b(2);

Using DelegatingScript as the base class, the code will run as:

delegate.a = 1;
delegate.b(2);

... whereas in plain Script, this will be run as:

binding.setProperty("a",1);
((Closure)binding.getProperty("b")).call(2);