private static void checkAlternateBinding(
BlockScope scope,
Expression receiver,
TypeBinding receiverType,
MethodBinding binding,
Expression[] arguments,
TypeBinding[] originalArgumentTypes,
TypeBinding[] alternateArgumentTypes,
final InvocationSite invocationSite) {
InvocationSite fakeInvocationSite =
new InvocationSite() {
public TypeBinding[] genericTypeArguments() {
return null;
}
public boolean isSuperAccess() {
return invocationSite.isSuperAccess();
}
public boolean isTypeAccess() {
return invocationSite.isTypeAccess();
}
public void setActualReceiverType(ReferenceBinding actualReceiverType) {
/* ignore */
}
public void setDepth(int depth) {
/* ignore */
}
public void setFieldIndex(int depth) {
/* ignore */
}
public int sourceStart() {
return 0;
}
public int sourceEnd() {
return 0;
}
};
MethodBinding bindingIfNoCast;
if (binding.isConstructor()) {
bindingIfNoCast =
scope.getConstructor(
(ReferenceBinding) receiverType, alternateArgumentTypes, fakeInvocationSite);
} else {
bindingIfNoCast =
receiver.isImplicitThis()
? scope.getImplicitMethod(
binding.selector, alternateArgumentTypes, fakeInvocationSite)
: scope.getMethod(
receiverType, binding.selector, alternateArgumentTypes, fakeInvocationSite);
}
if (bindingIfNoCast == binding) {
int argumentLength = originalArgumentTypes.length;
if (binding.isVarargs()) {
int paramLength = binding.parameters.length;
if (paramLength == argumentLength) {
int varargsIndex = paramLength - 1;
ArrayBinding varargsType = (ArrayBinding) binding.parameters[varargsIndex];
TypeBinding lastArgType = alternateArgumentTypes[varargsIndex];
// originalType may be compatible already, but cast mandated
// to clarify between varargs/non-varargs call
if (varargsType.dimensions != lastArgType.dimensions()) {
return;
}
if (lastArgType.isCompatibleWith(varargsType.elementsType())
&& lastArgType.isCompatibleWith(varargsType)) {
return;
}
}
}
for (int i = 0; i < argumentLength; i++) {
if (originalArgumentTypes[i] != alternateArgumentTypes[i]) {
scope.problemReporter().unnecessaryCast((CastExpression) arguments[i]);
}
}
}
}
