private static boolean checkOnlyDefaultConstructor(CtClass<?> ctClass) {
Set<? extends CtConstructor<?>> constructors = ctClass.getConstructors();
if (constructors.size() > 1) return false;
if (constructors.isEmpty()) return true;
CtConstructor<?> constructor = constructors.iterator().next();
return constructor.isImplicit();
}
private static <T> void processConstructor(CtConstructor<T> c, CtClass<T> toMerge) {
CtStatement firstStmt = c.getBody().getStatements().get(0);
if (firstStmt instanceof CtInvocation) {
CtInvocation<?> superConstructorCall = (CtInvocation) firstStmt;
if (!(superConstructorCall.getExecutable().getDeclaration() instanceof CtConstructor)) return;
CtConstructor superConstructor =
(CtConstructor) superConstructorCall.getExecutable().getDeclaration();
if (superConstructor.getDeclaringType() == toMerge) {
CtBlock superConstructorBody = c.getFactory().Core().clone(superConstructor.getBody());
superConstructorBody.accept(
new CtScanner() {
@Override
public <T> void visitCtParameterReference(CtParameterReference<T> ref) {
int parameterOrder = superConstructor.getParameters().indexOf(ref.getDeclaration());
ref.setDeclaringExecutable(c.getReference());
CtExpression<?> arg = superConstructorCall.getArguments().get(parameterOrder);
if (!(arg instanceof CtVariableAccess))
throw sgce("super() should be directly called in " + c);
CtVariable param = ((CtVariableAccess) arg).getVariable().getDeclaration();
if (!(param instanceof CtParameter))
throw sgce("super() should be directly called in " + c);
ref.setSimpleName(param.getSimpleName());
super.visitCtParameterReference(ref);
}
});
c.getBody().removeStatement(firstStmt);
List<CtStatement> superConstructorBodyStatements = superConstructorBody.getStatements();
for (int i = superConstructorBodyStatements.size() - 1; i >= 0; i--) {
c.getBody().insertBegin(superConstructorBodyStatements.get(i));
}
}
}
}