org.codehaus.groovy.classgen
Classes 
AnnotationVisitor
AsmClassGenerator
BytecodeExpression
BytecodeHelper
BytecodeInstruction
BytecodeSequence
ClassCompletionVerifier
ClassGenerator
CompileStack
DummyClassGenerator
EnumVisitor
ExtendedVerifier
GeneratorContext
MethodCaller
MethodCallerMultiAdapter
ReflectorGenerator
Variable
VariableScopeVisitor
Verifier
VerifierCodeVisitor
Exceptions 
ClassGeneratorException
RuntimeIncompleteClassException