protected ClassVisitor createClassVisitor() {
CompilerConfiguration config = getConfiguration();
int computeMaxStackAndFrames = ClassWriter.COMPUTE_MAXS;
if (CompilerConfiguration.isPostJDK7(config.getTargetBytecode())
|| Boolean.TRUE.equals(config.getOptimizationOptions().get("indy"))) {
computeMaxStackAndFrames += ClassWriter.COMPUTE_FRAMES;
}
return new ClassWriter(computeMaxStackAndFrames) {
private ClassNode getClassNode(String name) {
// try classes under compilation
CompileUnit cu = getAST();
ClassNode cn = cu.getClass(name);
if (cn != null) return cn;
// try inner classes
cn = cu.getGeneratedInnerClass(name);
if (cn != null) return cn;
// try class loader classes
try {
cn = ClassHelper.make(cu.getClassLoader().loadClass(name, false, true), false);
} catch (Exception e) {
throw new GroovyBugError(e);
}
return cn;
}
private ClassNode getCommonSuperClassNode(ClassNode c, ClassNode d) {
// adapted from ClassWriter code
if (c.isDerivedFrom(d)) return d;
if (d.isDerivedFrom(c)) return c;
if (c.isInterface() || d.isInterface()) return ClassHelper.OBJECT_TYPE;
do {
c = c.getSuperClass();
} while (c != null && !d.isDerivedFrom(c));
if (c == null) return ClassHelper.OBJECT_TYPE;
return c;
}
@Override
protected String getCommonSuperClass(String arg1, String arg2) {
ClassNode a = getClassNode(arg1.replace('/', '.'));
ClassNode b = getClassNode(arg2.replace('/', '.'));
return getCommonSuperClassNode(a, b).getName().replace('.', '/');
}
};
}
