public boolean acceptBinding(IBinding binding) {
if (fFound) return true;
if (binding == null) return false;
if (fToSearch.getKind() != binding.getKind()) {
return false;
}
boolean checkVisibility = hasFlag(CHECK_VISIBILITY, fFlags);
if (binding == fToSearch) {
fFound = true;
} else {
IBinding bindingDeclaration = Bindings.getDeclaration(binding);
if (bindingDeclaration == fToSearch) {
fFound = true;
} else if (bindingDeclaration.getName().equals(fToSearch.getName())) {
String signature = getSignature(bindingDeclaration);
if (signature != null && signature.equals(getSignature(fToSearch))) {
if (checkVisibility) {
fIsVisible = false;
}
return true; // found element that hides the binding to find
}
}
}
if (fFound && checkVisibility) {
fIsVisible = ScopeAnalyzer.isVisible(binding, fParentTypeBinding);
}
return fFound;
}
private static String getSignature(IBinding binding) {
if (binding != null) {
switch (binding.getKind()) {
case IBinding.METHOD:
StringBuffer buf = new StringBuffer();
buf.append('M');
buf.append(binding.getName()).append('(');
ITypeBinding[] parameters = ((IMethodBinding) binding).getParameterTypes();
for (int i = 0; i < parameters.length; i++) {
if (i > 0) {
buf.append(',');
}
ITypeBinding paramType = parameters[i].getErasure();
buf.append(paramType.getQualifiedName());
}
buf.append(')');
return buf.toString();
case IBinding.VARIABLE:
return 'V' + binding.getName();
case IBinding.TYPE:
return 'T' + binding.getName();
}
}
return null;
}
private static Map<String, String> getCleanUpOptions(IBinding binding, boolean removeAll) {
Map<String, String> result = new HashMap<String, String>();
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_PRIVATE_MEMBERS, CleanUpOptions.TRUE);
switch (binding.getKind()) {
case IBinding.TYPE:
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_PRIVATE_TYPES, CleanUpOptions.TRUE);
break;
case IBinding.METHOD:
if (((IMethodBinding) binding).isConstructor()) {
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_PRIVATE_CONSTRUCTORS, CleanUpOptions.TRUE);
} else {
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_PRIVATE_METHODS, CleanUpOptions.TRUE);
}
break;
case IBinding.VARIABLE:
if (removeAll) return null;
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_PRIVATE_FELDS, CleanUpOptions.TRUE);
result.put(CleanUpConstants.REMOVE_UNUSED_CODE_LOCAL_VARIABLES, CleanUpOptions.TRUE);
break;
}
return result;
}
private void removeUnusedName(CompilationUnitRewrite cuRewrite, SimpleName simpleName) {
ASTRewrite rewrite = cuRewrite.getASTRewrite();
CompilationUnit completeRoot = cuRewrite.getRoot();
IBinding binding = simpleName.resolveBinding();
CompilationUnit root = (CompilationUnit) simpleName.getRoot();
String displayString = getDisplayString(binding);
TextEditGroup group = createTextEditGroup(displayString, cuRewrite);
if (binding.getKind() == IBinding.METHOD) {
IMethodBinding decl = ((IMethodBinding) binding).getMethodDeclaration();
ASTNode declaration = root.findDeclaringNode(decl);
rewrite.remove(declaration, group);
} else if (binding.getKind() == IBinding.TYPE) {
ITypeBinding decl = ((ITypeBinding) binding).getTypeDeclaration();
ASTNode declaration = root.findDeclaringNode(decl);
if (declaration.getParent() instanceof TypeDeclarationStatement) {
declaration = declaration.getParent();
}
rewrite.remove(declaration, group);
} else if (binding.getKind() == IBinding.VARIABLE) {
SimpleName nameNode =
(SimpleName)
NodeFinder.perform(
completeRoot, simpleName.getStartPosition(), simpleName.getLength());
SimpleName[] references =
LinkedNodeFinder.findByBinding(completeRoot, nameNode.resolveBinding());
for (int i = 0; i < references.length; i++) {
removeVariableReferences(rewrite, references[i], group);
}
IVariableBinding bindingDecl =
((IVariableBinding) nameNode.resolveBinding()).getVariableDeclaration();
ASTNode declaringNode = completeRoot.findDeclaringNode(bindingDecl);
if (declaringNode instanceof SingleVariableDeclaration) {
removeParamTag(rewrite, (SingleVariableDeclaration) declaringNode, group);
}
} else {
// unexpected
}
}
/**
* Evaluates if the declaration is visible in a certain context.
*
* @param binding The binding of the declaration to examine
* @param context The context to test in
* @return Returns
*/
public static boolean isVisible(IBinding binding, ITypeBinding context) {
if (binding.getKind() == IBinding.VARIABLE && !((IVariableBinding) binding).isField()) {
return true; // all local variables found are visible
}
ITypeBinding declaring = getDeclaringType(binding);
if (declaring == null) {
return false;
}
declaring = declaring.getTypeDeclaration();
int modifiers = binding.getModifiers();
if (Modifier.isPublic(modifiers) || declaring.isInterface()) {
return true;
} else if (Modifier.isProtected(modifiers) || !Modifier.isPrivate(modifiers)) {
if (declaring.getPackage() == context.getPackage()) {
return true;
}
return isTypeInScope(declaring, context, Modifier.isProtected(modifiers));
}
// private visibility
return isTypeInScope(declaring, context, false);
}
private static ITypeBinding getDeclaringType(IBinding binding) {
switch (binding.getKind()) {
case IBinding.VARIABLE:
return ((IVariableBinding) binding).getDeclaringClass();
case IBinding.METHOD:
return ((IMethodBinding) binding).getDeclaringClass();
case IBinding.TYPE:
ITypeBinding typeBinding = (ITypeBinding) binding;
if (typeBinding.getDeclaringClass() != null) {
return typeBinding;
}
return typeBinding;
}
return null;
}
private String getDisplayString(IBinding binding) {
switch (binding.getKind()) {
case IBinding.TYPE:
return FixMessages.INSTANCE.UnusedCodeFix_RemoveUnusedType_description();
case IBinding.METHOD:
if (((IMethodBinding) binding).isConstructor()) {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveUnusedConstructor_description();
} else {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveUnusedPrivateMethod_description();
}
case IBinding.VARIABLE:
if (((IVariableBinding) binding).isField()) {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveUnusedField_description();
} else {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveUnusedVariabl_description();
}
default:
return ""; //$NON-NLS-1$
}
}
private static String getDisplayString(
SimpleName simpleName, IBinding binding, boolean removeAllAssignements) {
String name = simpleName.getIdentifier();
switch (binding.getKind()) {
case IBinding.TYPE:
return FixMessages.INSTANCE.UnusedCodeFix_RemoveType_description(name);
case IBinding.METHOD:
if (((IMethodBinding) binding).isConstructor()) {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveConstructor_description(name);
} else {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveMethod_description(name);
}
case IBinding.VARIABLE:
if (removeAllAssignements) {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveFieldOrLocalWithInitializer_description(
name);
} else {
return FixMessages.INSTANCE.UnusedCodeFix_RemoveFieldOrLocal_description(name);
}
default:
return ""; //$NON-NLS-1$
}
}