abstract syntax tree - Groovy - Add Class to script via AST transformations -

i'm creating groovy dsl looks this:

types {    "http://some.namespace.here"    b "..." }  testmethod(a a, b b) { ... } 

the user defines several types , methods on these types. need create a , b classnodes in ast groovy can find them.

to so, created following ast transformation:

@groovyasttransformation(phase = compilephase.semantic_analysis) class generateclassestransformer implements asttransformation  {      @override     public void visit(astnode[] nodes, sourceunit source) {          classnode = createclass("a")         classnode b = createclass("b")          modulenode module = sourceunit.getast()         module.addclass(a)         module.addclass(b)         module.getclasses().each {             println "class: " +         }      }      private classnode createclass(string classname) {          new astbuilder().buildfromspec {             classnode(classname, classnode.acc_public) {                 classnode object                 interfaces { classnode groovyobject }                 mixins { }             }         }.first()      }  } 

i add ast transformation groovy shell:

compilerconfiguration cc = new compilerconfiguration(); cc.setscriptbaseclass("groovy.util.delegatingscript"); cc.addcompilationcustomizers(new asttransformationcustomizer(new generateclassestransformer())); groovyshell sh = new groovyshell(loader, binding, cc); // ... 

when run code , not reference a , b, works out fine. however, use a , b, groovy cannot find classes (although on ast). instead, get:

org.codehaus.groovy.control.multiplecompilationerrorsexception: startup failed: c:\...\test.groovy: 23: unable resolve class  @ line 23, column 6.    a = null          ^ 

any appreciated!

update: classloader

i'm using custom urlclassloader, since i'm adding couple of jars classpath:

url[] urls = this.getextrajarurls(); // read jars directory relative dsl script classloader base = launcher.class.getclassloader(); loader = new urlclassloader(urls, base);