org.eclipse.jdt.core.search.SearchPattern Java Examples

private static List<TypeNameMatch> findTypeInfos(String typeName, IType contextType, IProgressMonitor pm) throws JavaModelException {
	IJavaSearchScope scope= SearchEngine.createJavaSearchScope(new IJavaProject[]{contextType.getJavaProject()}, true);
	IPackageFragment currPackage= contextType.getPackageFragment();
	ArrayList<TypeNameMatch> collectedInfos= new ArrayList<TypeNameMatch>();
	TypeNameMatchCollector requestor= new TypeNameMatchCollector(collectedInfos);
	int matchMode= SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE;
	new SearchEngine().searchAllTypeNames(null, matchMode, typeName.toCharArray(), matchMode, IJavaSearchConstants.TYPE, scope, requestor, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, pm);

	List<TypeNameMatch> result= new ArrayList<TypeNameMatch>();
	for (Iterator<TypeNameMatch> iter= collectedInfos.iterator(); iter.hasNext();) {
		TypeNameMatch curr= iter.next();
		IType type= curr.getType();
		if (type != null) {
			boolean visible=true;
			try {
				visible= JavaModelUtil.isVisible(type, currPackage);
			} catch (JavaModelException e) {
				//Assume visibile if not available
			}
			if (visible) {
				result.add(curr);
			}
		}
	}
	return result;
}
 

private Map<ICompilationUnit, SearchMatch[]> createTypeReferencesMapping(IProgressMonitor pm, RefactoringStatus status) throws JavaModelException {
	final RefactoringSearchEngine2 engine= new RefactoringSearchEngine2(SearchPattern.createPattern(fType, IJavaSearchConstants.ALL_OCCURRENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE));
	engine.setFiltering(true, true);
	engine.setScope(RefactoringScopeFactory.create(fType));
	engine.setStatus(status);
	engine.searchPattern(new SubProgressMonitor(pm, 1));
	final SearchResultGroup[] groups= (SearchResultGroup[]) engine.getResults();
	Map<ICompilationUnit, SearchMatch[]> result= new HashMap<ICompilationUnit, SearchMatch[]>();
	for (int i= 0; i < groups.length; i++) {
		SearchResultGroup group= groups[i];
		ICompilationUnit cu= group.getCompilationUnit();
		if (cu == null)
			continue;
		result.put(cu, group.getSearchResults());
	}
	return result;
}
 

private static IJavaElement[] getReferencingElementsFromSameClass(IMember member, IProgressMonitor pm, RefactoringStatus status) throws JavaModelException {
	Assert.isNotNull(member);
	final RefactoringSearchEngine2 engine= new RefactoringSearchEngine2(SearchPattern.createPattern(member, IJavaSearchConstants.REFERENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE));
	engine.setFiltering(true, true);
	engine.setScope(SearchEngine.createJavaSearchScope(new IJavaElement[] { member.getDeclaringType() }));
	engine.setStatus(status);
	engine.searchPattern(new SubProgressMonitor(pm, 1));
	SearchResultGroup[] groups= (SearchResultGroup[]) engine.getResults();
	Set<IJavaElement> result= new HashSet<IJavaElement>(3);
	for (int i= 0; i < groups.length; i++) {
		SearchResultGroup group= groups[i];
		SearchMatch[] results= group.getSearchResults();
		for (int j= 0; j < results.length; j++) {
			SearchMatch searchResult= results[j];
			result.add(SearchUtils.getEnclosingJavaElement(searchResult));
		}
	}
	return result.toArray(new IJavaElement[result.size()]);
}
 

protected void findCandidateTypes(final JvmDeclaredType contextType, final String typeSimpleName,
		IJavaSearchScope searchScope, final IAcceptor<JvmDeclaredType> acceptor) throws JavaModelException {
	BasicSearchEngine searchEngine = new BasicSearchEngine();
	final IVisibilityHelper contextualVisibilityHelper = new ContextualVisibilityHelper(visibilityHelper, contextType);
	searchEngine.searchAllTypeNames(null, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE, typeSimpleName.toCharArray(),
			SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE, IJavaSearchConstants.TYPE, searchScope,
			new IRestrictedAccessTypeRequestor() {
				@Override
				public void acceptType(int modifiers, char[] packageName, char[] simpleTypeName,
						char[][] enclosingTypeNames, String path, AccessRestriction access) {
					final String qualifiedTypeName = getQualifiedTypeName(packageName, enclosingTypeNames,
							simpleTypeName);
					if ((access == null
							|| (access.getProblemId() != IProblem.ForbiddenReference && !access.ignoreIfBetter()))
						&& !TypeFilter.isFiltered(packageName, simpleTypeName)) {
						JvmType importType = typeRefs.findDeclaredType(qualifiedTypeName, contextType.eResource());
						if (importType instanceof JvmDeclaredType
								&& contextualVisibilityHelper.isVisible((JvmDeclaredType) importType)) {
							acceptor.accept((JvmDeclaredType) importType);
						}
					}
				}
			}, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, new NullProgressMonitor());
}
 

/**
 * Computes the compilation units referencing the subtype to replace.
 *
 * @param type
 *            the subtype
 * @param monitor
 *            the progress monitor to use
 * @param status
 *            the refactoring status
 * @return the referenced compilation units (element type:
 *         <code>&lt;IJavaProject, Collection&lt;SearchResultGroup&gt;&gt;</code>)
 * @throws JavaModelException
 *             if an error occurs
 */
protected final Map<IJavaProject, Set<SearchResultGroup>> getReferencingCompilationUnits(final IType type, final IProgressMonitor monitor, final RefactoringStatus status) throws JavaModelException {
	try {
		monitor.beginTask("", 100); //$NON-NLS-1$
		monitor.setTaskName(RefactoringCoreMessages.SuperTypeRefactoringProcessor_creating);
		final RefactoringSearchEngine2 engine= new RefactoringSearchEngine2();
		engine.setOwner(fOwner);
		engine.setFiltering(true, true);
		engine.setStatus(status);
		engine.setScope(RefactoringScopeFactory.create(type));
		engine.setPattern(SearchPattern.createPattern(type, IJavaSearchConstants.REFERENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE));
		engine.searchPattern(new SubProgressMonitor(monitor, 100));
		@SuppressWarnings("unchecked")
		Map<IJavaProject, Set<SearchResultGroup>> result= (Map<IJavaProject, Set<SearchResultGroup>>) engine.getAffectedProjects();
		return result;
	} finally {
		monitor.done();
	}
}
 

private TypeNameMatch[] findAllTypes(String simpleTypeName, IJavaSearchScope searchScope, SimpleName nameNode, IProgressMonitor monitor) throws JavaModelException {
	boolean is50OrHigher= JavaModelUtil.is50OrHigher(fCompilationUnit.getJavaProject());

	int typeKinds= SimilarElementsRequestor.ALL_TYPES;
	if (nameNode != null) {
		typeKinds= ASTResolving.getPossibleTypeKinds(nameNode, is50OrHigher);
	}

	ArrayList<TypeNameMatch> typeInfos= new ArrayList<TypeNameMatch>();
	TypeNameMatchCollector requestor= new TypeNameMatchCollector(typeInfos);
	int matchMode= SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE;
	new SearchEngine().searchAllTypeNames(null, matchMode, simpleTypeName.toCharArray(), matchMode, getSearchForConstant(typeKinds), searchScope, requestor, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, monitor);

	ArrayList<TypeNameMatch> typeRefsFound= new ArrayList<TypeNameMatch>(typeInfos.size());
	for (int i= 0, len= typeInfos.size(); i < len; i++) {
		TypeNameMatch curr= typeInfos.get(i);
		if (curr.getPackageName().length() > 0) { // do not suggest imports from the default package
			if (isOfKind(curr, typeKinds, is50OrHigher) && isVisible(curr)) {
				typeRefsFound.add(curr);
			}
		}
	}
	return typeRefsFound.toArray(new TypeNameMatch[typeRefsFound.size()]);
}
 

/**
 * @param scope search scope
 * @param pm mrogress monitor
 * @return all package fragments in <code>scope</code> with same name as <code>fPackage</code>, excluding fPackage
 * @throws CoreException if search failed
 */
private IPackageFragment[] getNamesakePackages(IJavaSearchScope scope, IProgressMonitor pm) throws CoreException {
	SearchPattern pattern= SearchPattern.createPattern(fPackage.getElementName(), IJavaSearchConstants.PACKAGE, IJavaSearchConstants.DECLARATIONS, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE);

	final HashSet<IPackageFragment> packageFragments= new HashSet<>();
	SearchRequestor requestor= new SearchRequestor() {
		@Override
		public void acceptSearchMatch(SearchMatch match) throws CoreException {
			IJavaElement enclosingElement= SearchUtils.getEnclosingJavaElement(match);
			if (enclosingElement instanceof IPackageFragment) {
				IPackageFragment pack= (IPackageFragment) enclosingElement;
				if (! fPackage.equals(pack)) {
					packageFragments.add(pack);
				}
			}
		}
	};
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, pm);

	return packageFragments.toArray(new IPackageFragment[packageFragments.size()]);
}
 

private SearchResult findTypesBySimpleName(String simpleTypeName, final boolean searchForSources) {
	final SearchResult result = new SearchResult();
	try {
		new SearchEngine().searchAllTypeNames(null, 0, // match all package names
				simpleTypeName.toCharArray(), SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE,
					IJavaSearchConstants.TYPE,
					SearchEngine.createWorkspaceScope(),
					new TypeNameMatchRequestor() {
						@Override
						public void acceptTypeNameMatch(TypeNameMatch match) {
							IPackageFragmentRoot fragmentRoot = match.getPackageFragmentRoot();
							boolean externalLib = fragmentRoot.isArchive() || fragmentRoot.isExternal();
							if (externalLib ^ searchForSources) {
								result.foundTypes.add(match.getType());
							}
						}
					}, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, // wait for the jdt index to be ready
					new NullProgressMonitor());
	} catch (JavaModelException e) {
		logger.error(e.getMessage(), e);
	}
	return result;
}
 

/**
 * Searches for a class that matches a pattern.
 */
@VisibleForTesting
static boolean performSearch(SearchPattern pattern, IJavaSearchScope scope,
    IProgressMonitor monitor) {
  try {
    SearchEngine searchEngine = new SearchEngine();
    TypeSearchRequestor requestor = new TypeSearchRequestor();
    searchEngine.search(pattern,
        new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() },
        scope, requestor, monitor);
    return requestor.foundMatch();
  } catch (CoreException ex) {
    logger.log(Level.SEVERE, ex.getMessage());
    return false;
  }
}
 

private void addAccessorOccurrences(IProgressMonitor pm, IMethod accessor, String editName, String newAccessorName, RefactoringStatus status) throws CoreException {
	Assert.isTrue(accessor.exists());

	IJavaSearchScope scope= RefactoringScopeFactory.create(accessor);
	SearchPattern pattern= SearchPattern.createPattern(accessor, IJavaSearchConstants.ALL_OCCURRENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE);
	SearchResultGroup[] groupedResults= RefactoringSearchEngine.search(
		pattern, scope, new MethodOccurenceCollector(accessor.getElementName()), pm, status);

	for (int i= 0; i < groupedResults.length; i++) {
		ICompilationUnit cu= groupedResults[i].getCompilationUnit();
		if (cu == null) {
			continue;
		}
		SearchMatch[] results= groupedResults[i].getSearchResults();
		for (int j= 0; j < results.length; j++){
			SearchMatch searchResult= results[j];
			TextEdit edit= new ReplaceEdit(searchResult.getOffset(), searchResult.getLength(), newAccessorName);
			addTextEdit(fChangeManager.get(cu), editName, edit);
		}
	}
}
 

private IMethod[] searchForDeclarationsOfClashingMethods(IProgressMonitor pm) throws CoreException {
	final List<IMethod> results= new ArrayList<>();
	SearchPattern pattern= createNewMethodPattern();
	IJavaSearchScope scope= RefactoringScopeFactory.create(getMethod().getJavaProject());
	SearchRequestor requestor= new SearchRequestor() {
		@Override
		public void acceptSearchMatch(SearchMatch match) throws CoreException {
			Object method= match.getElement();
			if (method instanceof IMethod) {
				results.add((IMethod) method);
			}
			else {
				JavaLanguageServerPlugin.logError("Unexpected element in search match: " + match.toString()); //$NON-NLS-1$
			}
		}
	};
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, pm);
	return results.toArray(new IMethod[results.size()]);
}
 

private IMethod[] searchForDeclarationsOfClashingMethods(IProgressMonitor pm) throws CoreException {
	final List<IMethod> results= new ArrayList<IMethod>();
	SearchPattern pattern= createNewMethodPattern();
	IJavaSearchScope scope= RefactoringScopeFactory.create(getMethod().getJavaProject());
	SearchRequestor requestor= new SearchRequestor() {
		@Override
		public void acceptSearchMatch(SearchMatch match) throws CoreException {
			Object method= match.getElement();
			if (method instanceof IMethod) // check for bug 90138: [refactoring] [rename] Renaming method throws internal exception
				results.add((IMethod) method);
			else
				JavaPlugin.logErrorMessage("Unexpected element in search match: " + match.toString()); //$NON-NLS-1$
		}
	};
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, pm);
	return results.toArray(new IMethod[results.size()]);
}
 

private List<SearchResultGroup> getReferencesToTypesInPackage(IProgressMonitor pm, ReferencesInBinaryContext binaryRefs, RefactoringStatus status) throws CoreException {
	pm.beginTask("", 2); //$NON-NLS-1$
	IJavaSearchScope referencedFromNamesakesScope= RefactoringScopeFactory.create(fPackage, true, false);
	IPackageFragment[] namesakePackages= getNamesakePackages(referencedFromNamesakesScope, new SubProgressMonitor(pm, 1));
	if (namesakePackages.length == 0) {
		pm.done();
		return new ArrayList<SearchResultGroup>(0);
	}

	IJavaSearchScope scope= SearchEngine.createJavaSearchScope(namesakePackages);
	IType[] typesToSearch= getTypesInPackage(fPackage);
	if (typesToSearch.length == 0) {
		pm.done();
		return new ArrayList<SearchResultGroup>(0);
	}
	SearchPattern pattern= RefactoringSearchEngine.createOrPattern(typesToSearch, IJavaSearchConstants.REFERENCES);
	CollectingSearchRequestor requestor= new CuCollectingSearchRequestor(binaryRefs);
	SearchResultGroup[] results= RefactoringSearchEngine.search(pattern, scope, requestor, new SubProgressMonitor(pm, 1), status);
	pm.done();
	return new ArrayList<SearchResultGroup>(Arrays.asList(results));
}
 

private int getMatchMode(String pattern) {
	if (pattern.indexOf('*') != -1 || pattern.indexOf('?') != -1) {
		return SearchPattern.R_PATTERN_MATCH;
	} else if (SearchUtils.isCamelCasePattern(pattern)) {
		return SearchPattern.R_CAMELCASE_MATCH;
	}
	return SearchPattern.R_EXACT_MATCH;
}
 

private static SearchResultGroup[] getReferences(IMember member, IProgressMonitor monitor, RefactoringStatus status) throws JavaModelException {
	final RefactoringSearchEngine2 engine= new RefactoringSearchEngine2(SearchPattern.createPattern(member, IJavaSearchConstants.REFERENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE));
	engine.setFiltering(true, true);
	engine.setScope(RefactoringScopeFactory.create(member));
	engine.setStatus(status);
	engine.searchPattern(new SubProgressMonitor(monitor, 1));
	return (SearchResultGroup[]) engine.getResults();
}
 

@Override
public ICompilationUnit[] getAffectedCompilationUnits(final RefactoringStatus status, ReferencesInBinaryContext binaryRefs, IProgressMonitor pm) throws CoreException {
	IMethod method= (IMethod)fMethodBinding.getJavaElement();
	Assert.isTrue(method != null);

	SearchPattern pattern= SearchPattern.createPattern(method, IJavaSearchConstants.REFERENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE);
	IJavaSearchScope scope= RefactoringScopeFactory.create(method, true, false);
	final HashSet<ICompilationUnit> affectedCompilationUnits= new HashSet<ICompilationUnit>();
	CollectingSearchRequestor requestor= new CollectingSearchRequestor(binaryRefs) {
		private ICompilationUnit fLastCU;
		@Override
		public void acceptSearchMatch(SearchMatch match) throws CoreException {
			if (filterMatch(match))
				return;
			if (match.isInsideDocComment())
				return; // TODO: should warn user (with something like a ReferencesInBinaryContext)

			ICompilationUnit unit= SearchUtils.getCompilationUnit(match);
			if (match.getAccuracy() == SearchMatch.A_INACCURATE) {
				if (unit != null) {
					status.addError(RefactoringCoreMessages.TargetProvider_inaccurate_match,
						JavaStatusContext.create(unit, new SourceRange(match.getOffset(), match.getLength())));
				} else {
					status.addError(RefactoringCoreMessages.TargetProvider_inaccurate_match);
				}
			} else if (unit != null) {
				if (! unit.equals(fLastCU)) {
					fLastCU= unit;
					affectedCompilationUnits.add(unit);
				}
			}
		}
	};
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, new SubProgressMonitor(pm, 1));
	return affectedCompilationUnits.toArray(new ICompilationUnit[affectedCompilationUnits.size()]);
}
 

@VisibleForTesting
static boolean classExists(IJavaProject project, String typeName) {
  if (Strings.isNullOrEmpty(typeName)) {
    return false;
  }
  SearchPattern pattern = SearchPattern.createPattern(typeName,
      IJavaSearchConstants.CLASS,
      IJavaSearchConstants.DECLARATIONS,
      SearchPattern.R_EXACT_MATCH | SearchPattern.R_ERASURE_MATCH);
  IJavaSearchScope scope = project == null ? SearchEngine.createWorkspaceScope()
      : SearchEngine.createJavaSearchScope(new IJavaElement[] {project});
  return performSearch(pattern, scope, null);
}
 

public static Collection/*<MethodDeclarationUnitPair>*/ 
		findCallees(IProgressMonitor progressMonitor, String methodName, IJavaProject project, boolean isConstructor) 
{
	try {
           MethodSearchRequestor.MethodDeclarationsSearchRequestor searchRequestor = 
           	new MethodSearchRequestor.MethodDeclarationsSearchRequestor();
           SearchEngine searchEngine = new SearchEngine();

           IProgressMonitor monitor = new SubProgressMonitor(
           		progressMonitor, 5, SubProgressMonitor.SUPPRESS_SUBTASK_LABEL);
           monitor.beginTask("Searching for declaration of " + methodName +
           		(project != null ? " in " + project.getProject().getName() : ""), 100);
           IJavaSearchScope searchScope = getSearchScope(project);
           int matchType = !isConstructor ? IJavaSearchConstants.METHOD : IJavaSearchConstants.CONSTRUCTOR;
           SearchPattern pattern = SearchPattern.createPattern(
           		methodName, 
				matchType,
				IJavaSearchConstants.DECLARATIONS, 
				SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE );
           
           searchEngine.search(
           		pattern, 
				new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() },
                   searchScope, 
				searchRequestor, 
				monitor
				);
           monitor.done();

           return searchRequestor.getMethodUnitPairs();
       } catch (CoreException e) {
           JavaPlugin.log(e);

           return new LinkedList();
       }
}
 

private boolean isSourceType(final String qualifiedClassname, final IJavaProject javaProject)
        throws JavaModelException {
    final SearchEngine sEngine = new SearchEngine();
    final IJavaSearchScope searchScope = SearchEngine.createJavaSearchScope(new IJavaElement[] { javaProject },
            IJavaSearchScope.SOURCES);
    final TypeNameFoundRequestor nameRequestor = new TypeNameFoundRequestor();
    sEngine.searchAllTypeNames(NamingUtils.getPackageName(qualifiedClassname).toCharArray(),
            SearchPattern.R_EXACT_MATCH,
            NamingUtils.getSimpleName(qualifiedClassname)
                    .toCharArray(),
            SearchPattern.R_EXACT_MATCH, IJavaSearchConstants.CLASS_AND_INTERFACE, searchScope, nameRequestor,
            IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH,
            Repository.NULL_PROGRESS_MONITOR);
    return nameRequestor.isFound();
}
 

private IType[] searchForOuterTypesOfReferences(IMethod[] newNameMethods, IProgressMonitor pm) throws CoreException {
	final Set<IType> outerTypesOfReferences= new HashSet<>();
	SearchPattern pattern= RefactoringSearchEngine.createOrPattern(newNameMethods, IJavaSearchConstants.REFERENCES);
	IJavaSearchScope scope= createRefactoringScope(getMethod());
	SearchRequestor requestor= new SearchRequestor() {
		@Override
		public void acceptSearchMatch(SearchMatch match) throws CoreException {
			Object element= match.getElement();
			if (!(element instanceof IMember))
			 {
				return; // e.g. an IImportDeclaration for a static method import
			}
			IMember member= (IMember) element;
			IType declaring= member.getDeclaringType();
			if (declaring == null) {
				return;
			}
			IType outer= declaring.getDeclaringType();
			if (outer != null) {
				outerTypesOfReferences.add(declaring);
			}
		}
	};
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(),
			scope, requestor, pm);
	return outerTypesOfReferences.toArray(new IType[outerTypesOfReferences.size()]);
}
 

public AndLocator(AndPattern pattern) {
	super(pattern);

	SearchPattern[] patterns = pattern.patterns;
	PatternLocator[] locators = new PatternLocator[patterns.length];
	this.levels = new int[patterns.length];
	for (int i=0, l=patterns.length; i<l; i++) {
		locators[i] = PatternLocator.patternLocator(patterns[i]);
		this.levels[i] = IMPOSSIBLE_MATCH;
	}
	this.patternLocators = locators;
}
 

private List<SearchResultGroup> getReferencesToTypesInNamesakes(IProgressMonitor pm, RefactoringStatus status) throws CoreException {
	pm.beginTask("", 2); //$NON-NLS-1$
	// e.g. renaming B-p.p; project C requires B, X and has ref to B-p.p and X-p.p;
	// goal: find refs to X-p.p in CUs from fOccurrences

	// (1) find namesake packages (scope: all packages referenced by CUs in fOccurrences and fPackage)
	IJavaElement[] elements= new IJavaElement[fOccurrences.length + 1];
	for (int i= 0; i < fOccurrences.length; i++) {
		elements[i]= fOccurrences[i].getCompilationUnit();
	}
	elements[fOccurrences.length]= fPackage;
	IJavaSearchScope namesakePackagesScope= RefactoringScopeFactory.createReferencedScope(elements);
	IPackageFragment[] namesakePackages= getNamesakePackages(namesakePackagesScope, new SubProgressMonitor(pm, 1));
	if (namesakePackages.length == 0) {
		pm.done();
		return new ArrayList<>(0);
	}

	// (2) find refs in fOccurrences and fPackage to namesake packages
	// (from fOccurrences (without namesakes): may have shared star import)
	// (from fPackage: may have unimported references to types of namesake packages)
	IType[] typesToSearch= getTypesInPackages(namesakePackages);
	if (typesToSearch.length == 0) {
		pm.done();
		return new ArrayList<>(0);
	}
	SearchPattern pattern= RefactoringSearchEngine.createOrPattern(typesToSearch, IJavaSearchConstants.REFERENCES);
	IJavaSearchScope scope= getPackageAndOccurrencesWithoutNamesakesScope();
	SearchResultGroup[] results= RefactoringSearchEngine.search(pattern, scope, new SubProgressMonitor(pm, 1), status);
	pm.done();
	return new ArrayList<>(Arrays.asList(results));
}
 

private static IJavaElement[] getFocusedElementsAndTypes(SearchPattern pattern, IJavaElement focusElement, ObjectVector superTypes) throws JavaModelException {
	if (pattern instanceof MethodPattern) {
		// For method pattern, it needs to walk along the focus type super hierarchy
		// and add jars/projects of all the encountered types.
		IType type = (IType) pattern.focus.getAncestor(IJavaElement.TYPE);
		MethodPattern methodPattern = (MethodPattern) pattern;
		String selector = new String(methodPattern.selector);
		int parameterCount = methodPattern.parameterCount;
		ITypeHierarchy superHierarchy = type.newSupertypeHierarchy(null);
		IType[] allTypes = superHierarchy.getAllSupertypes(type);
		int length = allTypes.length;
		SimpleSet focusSet = new SimpleSet(length+1);
		if (focusElement != null) focusSet.add(focusElement);
		for (int i=0; i<length; i++) {
			IMethod[] methods = allTypes[i].getMethods();
			int mLength = methods.length;
			for (int m=0; m<mLength; m++) {
				if (parameterCount == methods[m].getNumberOfParameters() && methods[m].getElementName().equals(selector)) {
					IPackageFragmentRoot root = (IPackageFragmentRoot) allTypes[i].getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
					IJavaElement element = root.isArchive() ? root : root.getParent();
					focusSet.add(element);
					if (superTypes != null) superTypes.add(allTypes[i]);
					break;
				}
			}
		}
		// Rebuilt a contiguous array
		IJavaElement[] focuses = new IJavaElement[focusSet.elementSize];
		Object[] values = focusSet.values;
		int count = 0;
		for (int i = values.length; --i >= 0;) {
			if (values[i] != null) {
				focuses[count++] = (IJavaElement) values[i];
			}
		}
		return focuses;
	}
	if (focusElement == null) return new IJavaElement[0];
	return new IJavaElement[] { focusElement };
}
 

private static SearchPattern createSearchPattern(IType type) throws JavaModelException {
	SearchPattern pattern= SearchPattern.createPattern(type, IJavaSearchConstants.ALL_OCCURRENCES, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE);
	IMethod[] constructors= JavaElementUtil.getAllConstructors(type);
	if (constructors.length == 0)
		return pattern;
	SearchPattern constructorDeclarationPattern= RefactoringSearchEngine.createOrPattern(constructors, IJavaSearchConstants.DECLARATIONS);
	return SearchPattern.createOrPattern(pattern, constructorDeclarationPattern);
}
 

private static SearchResultGroup[] internalSearch(SearchEngine searchEngine, SearchPattern pattern, IJavaSearchScope scope,
		CollectingSearchRequestor requestor, IProgressMonitor monitor, RefactoringStatus status) throws JavaModelException {
	try {
		searchEngine.search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, monitor);
	} catch (CoreException e) {
		throw new JavaModelException(e);
	}
	return groupByCu(requestor.getResults(), status);
}
 

public boolean matchesDecodedKey(SearchPattern decodedPattern) {
	ConstructorPattern pattern = (ConstructorPattern) decodedPattern;

	return pattern.parameterCount != -1
		&& (this.parameterCount == pattern.parameterCount || this.parameterCount == -1 || this.varargs)
		&& matchesName(this.declaringSimpleName, pattern.declaringSimpleName);
}
 

/**
 * Sets the search pattern to be used during search.
 * <p>
 * This method must be called before {@link RefactoringSearchEngine2#searchPattern(IProgressMonitor)}
 *
 * @param elements the set of elements
 * @param limitTo determines the nature of the expected matches. This is a combination of {@link org.eclipse.jdt.core.search.IJavaSearchConstants}.
 */
public final void setPattern(final IJavaElement[] elements, final int limitTo) {
	Assert.isNotNull(elements);
	Assert.isTrue(elements.length > 0);
	SearchPattern pattern= SearchPattern.createPattern(elements[0], limitTo, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE);
	IJavaElement element= null;
	for (int index= 1; index < elements.length; index++) {
		element= elements[index];
		pattern= SearchPattern.createOrPattern(pattern, SearchPattern.createPattern(element, limitTo, SearchUtils.GENERICS_AGNOSTIC_MATCH_RULE));
	}
	setPattern(pattern);
}
 

private static SearchResultGroup[] getReferences(ICompilationUnit unit, IProgressMonitor pm, RefactoringStatus status) throws CoreException {
	final SearchPattern pattern = RefactoringSearchEngine.createOrPattern(unit.getTypes(), IJavaSearchConstants.REFERENCES);
	if (pattern != null) {
		String binaryRefsDescription = Messages.format(RefactoringCoreMessages.ReferencesInBinaryContext_ref_in_binaries_description, BasicElementLabels.getFileName(unit));
		ReferencesInBinaryContext binaryRefs = new ReferencesInBinaryContext(binaryRefsDescription);
		Collector requestor = new Collector(((IPackageFragment) unit.getParent()), binaryRefs);
		IJavaSearchScope scope = RefactoringScopeFactory.create(unit, true, false);

		SearchResultGroup[] result = RefactoringSearchEngine.search(pattern, scope, requestor, new SubProgressMonitor(pm, 1), status);
		binaryRefs.addErrorIfNecessary(status);
		return result;
	}
	return new SearchResultGroup[] {};
}
 

public static ICompilationUnit[] findAffectedCompilationUnits(SearchPattern pattern, IJavaSearchScope scope, final IProgressMonitor pm, RefactoringStatus status, final boolean tolerateInAccurateMatches) throws JavaModelException {

		boolean hasNonCuMatches = false;

		class ResourceSearchRequestor extends SearchRequestor {
			boolean hasPotentialMatches = false;
			Set<IResource> resources = new HashSet<>(5);
			private IResource fLastResource;

			@Override
			public void acceptSearchMatch(SearchMatch match) {
				if (!tolerateInAccurateMatches && match.getAccuracy() == SearchMatch.A_INACCURATE) {
					hasPotentialMatches = true;
				}
				if (fLastResource != match.getResource()) {
					fLastResource = match.getResource();
					resources.add(fLastResource);
				}
			}
		}
		ResourceSearchRequestor requestor = new ResourceSearchRequestor();
		try {
			new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, pm);
		} catch (CoreException e) {
			throw new JavaModelException(e);
		}

		List<IJavaElement> result = new ArrayList<>(requestor.resources.size());
		for (Iterator<IResource> iter = requestor.resources.iterator(); iter.hasNext();) {
			IResource resource = iter.next();
			IJavaElement element = JavaCore.create(resource);
			if (element instanceof ICompilationUnit) {
				result.add(element);
			} else {
				hasNonCuMatches = true;
			}
		}
		addStatusErrors(status, requestor.hasPotentialMatches, hasNonCuMatches);
		return result.toArray(new ICompilationUnit[result.size()]);
	}
 

public int addMatch(ASTNode node, int matchLevel) {
	int maskedLevel = matchLevel & PatternLocator.MATCH_LEVEL_MASK;
	switch (maskedLevel) {
		case PatternLocator.INACCURATE_MATCH:
			if (matchLevel != maskedLevel) {
				addTrustedMatch(node, new Integer(SearchMatch.A_INACCURATE+(matchLevel & PatternLocator.FLAVORS_MASK)));
			} else {
				addTrustedMatch(node, POTENTIAL_MATCH);
			}
			break;
		case PatternLocator.POSSIBLE_MATCH:
			addPossibleMatch(node);
			break;
		case PatternLocator.ERASURE_MATCH:
			if (matchLevel != maskedLevel) {
				addTrustedMatch(node, new Integer(SearchPattern.R_ERASURE_MATCH+(matchLevel & PatternLocator.FLAVORS_MASK)));
			} else {
				addTrustedMatch(node, ERASURE_MATCH);
			}
			break;
		case PatternLocator.ACCURATE_MATCH:
			if (matchLevel != maskedLevel) {
				addTrustedMatch(node, new Integer(SearchMatch.A_ACCURATE+(matchLevel & PatternLocator.FLAVORS_MASK)));
			} else {
				addTrustedMatch(node, EXACT_MATCH);
			}
			break;
	}
	return matchLevel;
}