import org.codehaus.groovy.control.CompilerConfiguration
import org.codehaus.groovy.runtime.InvokerHelper

class Bar {
    String bar

    void bar(String bar) {
        this.bar = bar
    }
}

class Foo {
    Bar bar

    void foo(@DelegatesTo(value = Bar, strategy = Closure.DELEGATE_FIRST) closure) {
        def bar = new Bar()
        def code = closure.rehydrate(bar, this, this)
        code()
        this.bar = bar
    }
}

abstract class MyScript extends Script  {

    Foo dslEntryPoint(@DelegatesTo(value = Foo, strategy = Closure.DELEGATE_FIRST) closure) {
        def foo = new Foo()
        def code = closure.rehydrate(foo, this, this)
        code()
        foo
    }
}

def DSL_NOT_OK = """
    dslEntryPoint() {
        foo {
            bar magicValue
        }
    }
"""

def DSL_OK = """
    def myMagicValue = magicValue
    dslEntryPoint() {
        foo {
            bar myMagicValue
        }
    }
"""

CompilerConfiguration config = new CompilerConfiguration(CompilerConfiguration.DEFAULT)
config.scriptBaseClass = MyScript.class.name
GroovyClassLoader groovyClassLoader = new GroovyClassLoader(getClass().getClassLoader(), config)
Class<Script> clazz = groovyClassLoader.parseClass(DSL_NOT_OK)
Binding binding = new Binding()
binding.setVariable('magicValue', '42')
Script script = InvokerHelper.createScript(clazz, binding)
Foo foo = script.run() as Foo
assert foo.bar.bar == '42'