private static JMethod createEmptyMethodFromExample(
JDeclaredType inType, JMethod exampleMethod, boolean isAbstract) {
JMethod emptyMethod =
new JMethod(
exampleMethod.getSourceInfo(),
exampleMethod.getName(),
inType,
exampleMethod.getType(),
isAbstract,
false,
false,
exampleMethod.getAccess());
emptyMethod.addThrownExceptions(exampleMethod.getThrownExceptions());
emptyMethod.setSynthetic();
// Copy parameters.
for (JParameter param : exampleMethod.getParams()) {
emptyMethod.addParam(
new JParameter(
param.getSourceInfo(),
param.getName(),
param.getType(),
param.isFinal(),
param.isThis(),
emptyMethod));
}
JMethodBody body = new JMethodBody(exampleMethod.getSourceInfo());
emptyMethod.setBody(body);
emptyMethod.freezeParamTypes();
inType.addMethod(emptyMethod);
return emptyMethod;
}
/**
* Creates a synthetic forwarding stub in {@code type} with the same signature as {@code
* superTypeMethod} that dispatchs to that method..
*/
public static JMethod createForwardingMethod(JDeclaredType type, JMethod methodToDelegateTo) {
JMethod forwardingMethod = createEmptyMethodFromExample(type, methodToDelegateTo, false);
forwardingMethod.setForwarding();
// This is a synthetic forwading method due to a default.
if (methodToDelegateTo.isDefaultMethod()) {
forwardingMethod.setDefaultMethod();
}
// Create the forwarding body.
JMethodBody body = (JMethodBody) forwardingMethod.getBody();
// Invoke methodToDelegate
JMethodCall forwardingCall =
new JMethodCall(
methodToDelegateTo.getSourceInfo(),
new JThisRef(methodToDelegateTo.getSourceInfo(), type),
methodToDelegateTo);
forwardingCall.setStaticDispatchOnly();
// copy params
for (JParameter p : forwardingMethod.getParams()) {
forwardingCall.addArg(new JParameterRef(p.getSourceInfo(), p));
}
// return statement if not void return type
body.getBlock().addStmt(makeMethodEndStatement(forwardingMethod.getType(), forwardingCall));
return forwardingMethod;
}
/** Returns a description for a member suitable for reporting errors to the users. */
public static String getReadableDescription(JMember member) {
if (member instanceof JField) {
return String.format(
"%s %s.%s",
getReadableDescription(member.getType()),
getReadableDescription(member.getEnclosingType()),
member.getName());
}
JMethod method = (JMethod) member;
String printableDescription = "";
if (!method.isConstructor()) {
printableDescription += getReadableDescription(method.getType()) + " ";
}
printableDescription +=
String.format(
"%s.%s(%s)",
getReadableDescription(method.getEnclosingType()),
method.getName(),
Joiner.on(", ")
.join(
Iterables.transform(
method.getOriginalParamTypes(),
new Function<JType, String>() {
@Override
public String apply(JType type) {
return getReadableDescription(type);
}
})));
return printableDescription;
}
@Override
public void exit(JMethod x, Context ctx) {
JType type = x.getType();
if (type instanceof JReferenceType
&& !program.typeOracle.isInstantiatedType((JReferenceType) type)) {
x.setType(JReferenceType.NULL_TYPE);
}
Predicate<JMethod> isPruned =
new Predicate<JMethod>() {
@Override
public boolean apply(JMethod method) {
return isPruned(method);
}
};
Iterables.removeIf(x.getOverriddenMethods(), isPruned);
Iterables.removeIf(x.getOverridingMethods(), isPruned);
}