Package org.aspectj.org.eclipse.jdt.internal.core.hierarchy

Class TypeHierarchy

java.lang.Object

org.aspectj.org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy

All Implemented Interfaces:

IElementChangedListener, ITypeHierarchy

Direct Known Subclasses:

RegionBasedTypeHierarchy

public class TypeHierarchy
extends Object
implements ITypeHierarchy, IElementChangedListener

See Also:

• ITypeHierarchy

Field Summary

Fields

Modifier and Type	Field	Description
protected ChangeCollector	changeCollector
protected ArrayList<ITypeHierarchyChangedListener>	changeListeners	Change listeners - null if no one is listening.
protected Map<IType,IType>	classToSuperclass
protected boolean	computeSubtypes	Whether this hierarchy should contains subtypes.
static boolean	DEBUG
Map<IOpenable,ArrayList<IType>>	files
protected IType	focusType	The type the hierarchy was specifically computed for, possibly null.
protected Set<IType>	interfaces
Set<String>	missingTypes
boolean	needsRefresh
protected static final IType[]	NO_TYPE
protected Region	packageRegion	A region describing the packages considered by this hierarchy.
protected org.eclipse.core.runtime.SubMonitor	progressMonitor	The progress monitor to report work completed too.
protected IJavaProject	project	The Java Project in which the hierarchy is being built - this provides the context for determining a classpath and namelookup rules.
protected Region	projectRegion	A region describing the projects considered by this hierarchy.
protected Set<IType>	rootClasses
protected Map<IType,Integer>	typeFlags
protected Map<IType,Set<IType>>	typeToSubtypes
protected Map<IType,IType[]>	typeToSuperInterfaces
protected ICompilationUnit[]	workingCopies

Constructor Summary

Constructors

Constructor	Description
TypeHierarchy()	Creates an empty TypeHierarchy
TypeHierarchy(IType type, ICompilationUnit[] workingCopies, IJavaProject project, boolean computeSubtypes)	Creates a TypeHierarchy on the given type.
TypeHierarchy(IType type, ICompilationUnit[] workingCopies, IJavaSearchScope scope, boolean computeSubtypes)	Creates a TypeHierarchy on the given type.

Method Summary

Modifier and Type	Method	Description
protected void	addInterface(IType type)	Adds the type to the collection of interfaces.
protected void	addRootClass(IType type)	Adds the type to the collection of root classes if the classes is not already present in the collection.
protected void	addSubtype(IType type, IType subtype)	Adds the given subtype to the type.
void	addTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener)	Adds the given listener for changes to this type hierarchy.
void	cacheFlags(IType type, int flags)	cacheFlags.
protected void	cacheSuperclass(IType type, IType superclass)	Caches the handle of the superclass for the specified type.
protected void	cacheSuperInterfaces(IType type, IType[] superinterfaces)	Caches all of the superinterfaces that are specified for the type.
protected void	checkCanceled()	Checks with the progress monitor to see whether the creation of the type hierarchy should be canceled.
protected void	compute()	Compute this type hierarchy.
boolean	contains(IType type)	Returns whether the given type is part of this hierarchy.
void	elementChanged(ElementChangedEvent event)	Determines if the change affects this hierarchy, and fires change notification if required.
boolean	exists()	Returns whether the type and project this hierarchy was created on exist.
void	fireChange()	Notifies listeners that this hierarchy has changed and needs refreshing.
IType[]	getAllClasses()	Returns all classes in this type hierarchy's graph, in no particular order.
IType[]	getAllInterfaces()	Returns all interfaces in this type hierarchy's graph, in no particular order.
IType[]	getAllSubtypes(IType type)	Returns all resolved subtypes (direct and indirect) of the given type, in no particular order, limited to the types in this type hierarchy's graph.
IType[]	getAllSuperclasses(IType type)	Returns all resolved superclasses of the given class, in bottom-up order.
IType[]	getAllSuperInterfaces(IType type)	Returns all resolved superinterfaces (direct and indirect) of the given type.
IType[]	getAllSupertypes(IType type)	Returns all resolved supertypes of the given type, in bottom-up order.
IType[]	getAllTypes()	Returns all types in this type hierarchy's graph, in no particular order.
int	getCachedFlags(IType type)	Return the flags associated with the given type (would be equivalent to IMember.getFlags()), or -1 if this information wasn't cached on the hierarchy during its computation.
IType[]	getExtendingInterfaces(IType type)	Returns all interfaces resolved to extend the given interface, in no particular order, limited to the interfaces in this hierarchy's graph.
IType[]	getImplementingClasses(IType type)	Returns all classes resolved to implement the given interface, in no particular order, limited to the classes in this type hierarchy's graph.
IType[]	getRootClasses()	Returns all classes in the graph which have no resolved superclass, in no particular order.
IType[]	getRootInterfaces()	Returns all interfaces in the graph which have no resolved superinterfaces, in no particular order.
IType[]	getSubclasses(IType type)	Returns the direct resolved subclasses of the given class, in no particular order, limited to the classes in this type hierarchy's graph.
IType[]	getSubtypes(IType type)	Returns the direct resolved subtypes of the given type, in no particular order, limited to the types in this type hierarchy's graph.
IType	getSuperclass(IType type)	Returns the resolved superclass of the given class, or null if the given class has no superclass, the superclass could not be resolved, or if the given type is an interface.
IType[]	getSuperInterfaces(IType type)	Returns the direct resolved interfaces that the given type implements or extends, in no particular order, limited to the interfaces in this type hierarchy's graph.
IType[]	getSupertypes(IType type)	Returns the resolved supertypes of the given type, in no particular order, limited to the types in this type hierarchy's graph.
IType	getType()	Returns the type this hierarchy was computed for.
protected IType[]	growAndAddToArray(IType[] array, IType addition)	Adds the new element to a new array that contains all of the elements of the old array.
protected IType[]	growAndAddToArray(IType[] array, IType[] additions)	Adds the new elements to a new array that contains all of the elements of the old array.
boolean	hasFineGrainChanges()
protected void	initialize(int size)	Initializes this hierarchy's internal tables with the given size.
protected void	initializeRegions()	Initializes the file, package and project regions
boolean	isAffected(IJavaElementDelta delta, int eventType)	Returns true if the given delta could change this type hierarchy
protected boolean	isAffectedByOpenable(IJavaElementDelta delta, IJavaElement element, int eventType)	Returns true if the given type delta (a compilation unit delta or a class file delta) could affect this type hierarchy.
IJavaProject	javaProject()	Returns the java project this hierarchy was created in.
static ITypeHierarchy	load(IType type, InputStream input, WorkingCopyOwner owner)
protected boolean	packageRegionContainsSamePackageFragment(PackageFragment element)	Returns true if an equivalent package fragment is included in the package region.
protected static byte[]	readUntil(InputStream input, byte separator)
protected static byte[]	readUntil(InputStream input, byte separator, int offset)
void	refresh(org.eclipse.core.runtime.IProgressMonitor monitor)	Re-computes the type hierarchy reporting progress.
void	removeTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener)	Removes the given listener from this type hierarchy.
void	store(OutputStream output, org.eclipse.core.runtime.IProgressMonitor monitor)	Stores the type hierarchy in an output stream.
String	toString()
protected void	worked(int work)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

DEBUG

public static boolean DEBUG

project

protected IJavaProject project

The Java Project in which the hierarchy is being built - this provides the context for determining a classpath and namelookup rules. Possibly null.

focusType

protected IType focusType

The type the hierarchy was specifically computed for, possibly null.

workingCopies

protected ICompilationUnit[] workingCopies

classToSuperclass

protected Map<IType,IType> classToSuperclass

typeToSuperInterfaces

protected Map<IType,IType[]> typeToSuperInterfaces

typeToSubtypes

protected Map<IType,Set<IType>> typeToSubtypes

typeFlags

protected Map<IType,Integer> typeFlags

rootClasses

protected Set<IType> rootClasses

interfaces

protected Set<IType> interfaces

missingTypes

public Set<String> missingTypes

NO_TYPE

protected static final IType[] NO_TYPE

progressMonitor

protected org.eclipse.core.runtime.SubMonitor progressMonitor

The progress monitor to report work completed too.

changeListeners

protected ArrayList<ITypeHierarchyChangedListener> changeListeners

Change listeners - null if no one is listening.

files

public Map<IOpenable,ArrayList<IType>> files

packageRegion

protected Region packageRegion

A region describing the packages considered by this hierarchy. Null if not activated.

projectRegion

protected Region projectRegion

A region describing the projects considered by this hierarchy. Null if not activated.

computeSubtypes

protected boolean computeSubtypes

Whether this hierarchy should contains subtypes.

needsRefresh

public boolean needsRefresh

changeCollector

protected ChangeCollector changeCollector

Constructor Details

TypeHierarchy

public TypeHierarchy()

Creates an empty TypeHierarchy

TypeHierarchy

public TypeHierarchy(IType type,
 ICompilationUnit[] workingCopies,
 IJavaProject project,
 boolean computeSubtypes)

Creates a TypeHierarchy on the given type.

TypeHierarchy

public TypeHierarchy(IType type,
 ICompilationUnit[] workingCopies,
 IJavaSearchScope scope,
 boolean computeSubtypes)

Creates a TypeHierarchy on the given type.

Method Details

initializeRegions

protected void initializeRegions()

Initializes the file, package and project regions

addInterface

protected void addInterface(IType type)

Adds the type to the collection of interfaces.

addRootClass

protected void addRootClass(IType type)

Adds the type to the collection of root classes if the classes is not already present in the collection.

addSubtype

protected void addSubtype(IType type,
 IType subtype)

Adds the given subtype to the type.

addTypeHierarchyChangedListener

public void addTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener)

Description copied from interface: ITypeHierarchy

Adds the given listener for changes to this type hierarchy. Listeners are notified when this type hierarchy changes and needs to be refreshed. Has no effect if an identical listener is already registered.

Specified by:

addTypeHierarchyChangedListener in interface ITypeHierarchy

Parameters:

listener - the listener

See Also:

• ITypeHierarchy

cacheFlags

public void cacheFlags(IType type,
 int flags)

cacheFlags.

cacheSuperclass

protected void cacheSuperclass(IType type,
 IType superclass)

Caches the handle of the superclass for the specified type. As a side effect cache this type as a subtype of the superclass.

cacheSuperInterfaces

protected void cacheSuperInterfaces(IType type,
 IType[] superinterfaces)

Caches all of the superinterfaces that are specified for the type.

checkCanceled

protected void checkCanceled()

Checks with the progress monitor to see whether the creation of the type hierarchy should be canceled. Should be regularly called so that the user can cancel.

Throws:

org.eclipse.core.runtime.OperationCanceledException - if cancelling the operation has been requested

See Also:

• IProgressMonitor.isCanceled()

compute

protected void compute()
                throws JavaModelException,
org.eclipse.core.runtime.CoreException

Compute this type hierarchy.

Throws:

JavaModelException

org.eclipse.core.runtime.CoreException

contains

public boolean contains(IType type)

Description copied from interface: ITypeHierarchy

Returns whether the given type is part of this hierarchy.

Specified by:

contains in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

true if the given type is part of this hierarchy, false otherwise

See Also:

• ITypeHierarchy

elementChanged

public void elementChanged(ElementChangedEvent event)

Determines if the change affects this hierarchy, and fires change notification if required.

Specified by:

elementChanged in interface IElementChangedListener

Parameters:

event - the change event

exists

public boolean exists()

Description copied from interface: ITypeHierarchy

Returns whether the type and project this hierarchy was created on exist.

Specified by:

exists in interface ITypeHierarchy

Returns:

true if the type and project this hierarchy was created on exist, false otherwise

See Also:

• ITypeHierarchy

fireChange

public void fireChange()

Notifies listeners that this hierarchy has changed and needs refreshing. Note that listeners can be removed as we iterate through the list.

getAllClasses

public IType[] getAllClasses()

Description copied from interface: ITypeHierarchy

Returns all classes in this type hierarchy's graph, in no particular order. Any classes in the creation region which were not resolved to have any subtypes or supertypes are not included in the result.

Specified by:

getAllClasses in interface ITypeHierarchy

Returns:

all classes in this type hierarchy's graph

See Also:

• ITypeHierarchy

getAllInterfaces

public IType[] getAllInterfaces()

Description copied from interface: ITypeHierarchy

Returns all interfaces in this type hierarchy's graph, in no particular order. Any interfaces in the creation region which were not resolved to have any subtypes or supertypes are not included in the result.

Specified by:

getAllInterfaces in interface ITypeHierarchy

Returns:

all interfaces in this type hierarchy's graph

See Also:

• ITypeHierarchy

getAllSubtypes

public IType[] getAllSubtypes(IType type)

Description copied from interface: ITypeHierarchy

Returns all resolved subtypes (direct and indirect) of the given type, in no particular order, limited to the types in this type hierarchy's graph. An empty array is returned if there are no resolved subtypes for the given type.

Specified by:

getAllSubtypes in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all resolved subtypes (direct and indirect) of the given type

See Also:

• ITypeHierarchy

getAllSuperclasses

public IType[] getAllSuperclasses(IType type)

Description copied from interface: ITypeHierarchy

Returns all resolved superclasses of the given class, in bottom-up order. An empty array is returned if there are no resolved superclasses for the given class.

NOTE: once a type hierarchy has been created, it is more efficient to query the hierarchy for superclasses than to query a class recursively up the superclass chain. Querying an element performs a dynamic resolution, whereas the hierarchy returns a pre-computed result.

Specified by:

getAllSuperclasses in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all resolved superclasses of the given class, in bottom-up order, an empty array if none.

See Also:

• ITypeHierarchy

getAllSuperInterfaces

public IType[] getAllSuperInterfaces(IType type)

Description copied from interface: ITypeHierarchy

Returns all resolved superinterfaces (direct and indirect) of the given type. If the given type is a class, this includes all superinterfaces of all superclasses. An empty array is returned if there are no resolved superinterfaces for the given type.

NOTE: once a type hierarchy has been created, it is more efficient to query the hierarchy for superinterfaces than to query a type recursively. Querying an element performs a dynamic resolution, whereas the hierarchy returns a pre-computed result.

Specified by:

getAllSuperInterfaces in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all resolved superinterfaces (direct and indirect) of the given type, an empty array if none

See Also:

• ITypeHierarchy

getAllSupertypes

public IType[] getAllSupertypes(IType type)

Description copied from interface: ITypeHierarchy

Returns all resolved supertypes of the given type, in bottom-up order. An empty array is returned if there are no resolved supertypes for the given type.

Note that java.lang.Object is NOT considered to be a supertype of any interface type.

NOTE: once a type hierarchy has been created, it is more efficient to query the hierarchy for supertypes than to query a type recursively up the supertype chain. Querying an element performs a dynamic resolution, whereas the hierarchy returns a pre-computed result.

Specified by:

getAllSupertypes in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all resolved supertypes of the given class, in bottom-up order, an empty array if none

See Also:

• ITypeHierarchy

getAllTypes

public IType[] getAllTypes()

Description copied from interface: ITypeHierarchy

Returns all types in this type hierarchy's graph, in no particular order. Any types in the creation region which were not resolved to have any subtypes or supertypes are not included in the result.

Specified by:

getAllTypes in interface ITypeHierarchy

Returns:

all types in this type hierarchy's graph

See Also:

• ITypeHierarchy

getCachedFlags

public int getCachedFlags(IType type)

Description copied from interface: ITypeHierarchy

Return the flags associated with the given type (would be equivalent to IMember.getFlags()), or -1 if this information wasn't cached on the hierarchy during its computation.

Specified by:

getCachedFlags in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the modifier flags for this member

See Also:

• ITypeHierarchy.getCachedFlags(IType)

getExtendingInterfaces

public IType[] getExtendingInterfaces(IType type)

Description copied from interface: ITypeHierarchy

Returns all interfaces resolved to extend the given interface, in no particular order, limited to the interfaces in this hierarchy's graph. Returns an empty collection if the given type is a class, or if no interfaces were resolved to extend the given interface.

Specified by:

getExtendingInterfaces in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all interfaces resolved to extend the given interface limited to the interfaces in this hierarchy's graph, an empty array if none.

See Also:

• ITypeHierarchy

getImplementingClasses

public IType[] getImplementingClasses(IType type)

Description copied from interface: ITypeHierarchy

Returns all classes resolved to implement the given interface, in no particular order, limited to the classes in this type hierarchy's graph. Returns an empty collection if the given type is a class, or if no classes were resolved to implement the given interface.

Specified by:

getImplementingClasses in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

all classes resolved to implement the given interface limited to the classes in this type hierarchy's graph, an empty array if none

See Also:

• ITypeHierarchy

getRootClasses

public IType[] getRootClasses()

Description copied from interface: ITypeHierarchy

Returns all classes in the graph which have no resolved superclass, in no particular order.

Specified by:

getRootClasses in interface ITypeHierarchy

Returns:

all classes in the graph which have no resolved superclass

See Also:

• ITypeHierarchy

getRootInterfaces

public IType[] getRootInterfaces()

Description copied from interface: ITypeHierarchy

Returns all interfaces in the graph which have no resolved superinterfaces, in no particular order.

Specified by:

getRootInterfaces in interface ITypeHierarchy

Returns:

all interfaces in the graph which have no resolved superinterfaces

See Also:

• ITypeHierarchy

getSubclasses

public IType[] getSubclasses(IType type)

Description copied from interface: ITypeHierarchy

Returns the direct resolved subclasses of the given class, in no particular order, limited to the classes in this type hierarchy's graph. Returns an empty collection if the given type is an interface, or if no classes were resolved to be subclasses of the given class.

Specified by:

getSubclasses in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the direct resolved subclasses of the given class limited to the classes in this type hierarchy's graph, an empty collection if none.

See Also:

• ITypeHierarchy

getSubtypes

public IType[] getSubtypes(IType type)

Description copied from interface: ITypeHierarchy

Returns the direct resolved subtypes of the given type, in no particular order, limited to the types in this type hierarchy's graph. If the type is a class, this returns the resolved subclasses. If the type is an interface, this returns both the classes which implement the interface and the interfaces which extend it.

Specified by:

getSubtypes in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the direct resolved subtypes of the given type limited to the types in this type hierarchy's graph

See Also:

• ITypeHierarchy

getSuperclass

public IType getSuperclass(IType type)

Description copied from interface: ITypeHierarchy

Returns the resolved superclass of the given class, or null if the given class has no superclass, the superclass could not be resolved, or if the given type is an interface.

Specified by:

getSuperclass in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the resolved superclass of the given class, or null if the given class has no superclass, the superclass could not be resolved, or if the given type is an interface

See Also:

• ITypeHierarchy

getSuperInterfaces

public IType[] getSuperInterfaces(IType type)

Description copied from interface: ITypeHierarchy

Returns the direct resolved interfaces that the given type implements or extends, in no particular order, limited to the interfaces in this type hierarchy's graph. For classes, this gives the interfaces that the class implements. For interfaces, this gives the interfaces that the interface extends.

Specified by:

getSuperInterfaces in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the direct resolved interfaces that the given type implements or extends limited to the interfaces in this type hierarchy's graph

See Also:

• ITypeHierarchy

getSupertypes

public IType[] getSupertypes(IType type)

Description copied from interface: ITypeHierarchy

Returns the resolved supertypes of the given type, in no particular order, limited to the types in this type hierarchy's graph. For classes, this returns its superclass and the interfaces that the class implements. For interfaces, this returns the interfaces that the interface extends. As a consequence java.lang.Object is NOT considered to be a supertype of any interface type.

Specified by:

getSupertypes in interface ITypeHierarchy

Parameters:

type - the given type

Returns:

the resolved supertypes of the given type limited to the types in this type hierarchy's graph

See Also:

• ITypeHierarchy

getType

public IType getType()

Description copied from interface: ITypeHierarchy

Returns the type this hierarchy was computed for. Returns null if this hierarchy was computed for a region.

Specified by:

getType in interface ITypeHierarchy

Returns:

the type this hierarchy was computed for

See Also:

• ITypeHierarchy

growAndAddToArray

protected IType[] growAndAddToArray(IType[] array,
 IType[] additions)

Adds the new elements to a new array that contains all of the elements of the old array. Returns the new array.

growAndAddToArray

protected IType[] growAndAddToArray(IType[] array,
 IType addition)

Adds the new element to a new array that contains all of the elements of the old array. Returns the new array.

hasFineGrainChanges

public boolean hasFineGrainChanges()

initialize

protected void initialize(int size)

Initializes this hierarchy's internal tables with the given size.

isAffected

public boolean isAffected(IJavaElementDelta delta,
 int eventType)

Returns true if the given delta could change this type hierarchy

Parameters:

eventType - TODO

isAffectedByOpenable

protected boolean isAffectedByOpenable(IJavaElementDelta delta,
 IJavaElement element,
 int eventType)

Returns true if the given type delta (a compilation unit delta or a class file delta) could affect this type hierarchy.

Parameters:

eventType - TODO

javaProject

public IJavaProject javaProject()

Returns the java project this hierarchy was created in.

readUntil

protected static byte[] readUntil(InputStream input,
 byte separator)
                           throws JavaModelException,
IOException

Throws:

JavaModelException

IOException

readUntil

protected static byte[] readUntil(InputStream input,
 byte separator,
 int offset)
                           throws IOException,
JavaModelException

Throws:

IOException

JavaModelException

load

public static ITypeHierarchy load(IType type,
 InputStream input,
 WorkingCopyOwner owner)
                           throws JavaModelException

Throws:

JavaModelException

packageRegionContainsSamePackageFragment

protected boolean packageRegionContainsSamePackageFragment(PackageFragment element)

Returns true if an equivalent package fragment is included in the package region. Package fragments are equivalent if they both have the same name.

refresh

public void refresh(org.eclipse.core.runtime.IProgressMonitor monitor)
             throws JavaModelException

Description copied from interface: ITypeHierarchy

Re-computes the type hierarchy reporting progress.

Specified by:

refresh in interface ITypeHierarchy

Parameters:

monitor - the given progress monitor

Throws:

JavaModelException - if unable to refresh the hierarchy

See Also:

• TODO (jerome) should use a PerThreadObject to build the hierarchy instead of synchronizing (see also isAffected(IJavaElementDelta))

removeTypeHierarchyChangedListener

public void removeTypeHierarchyChangedListener(ITypeHierarchyChangedListener listener)

Description copied from interface: ITypeHierarchy

Removes the given listener from this type hierarchy. Has no effect if an identical listener is not registered.

Specified by:

removeTypeHierarchyChangedListener in interface ITypeHierarchy

Parameters:

listener - the listener

See Also:

• ITypeHierarchy

store

public void store(OutputStream output,
 org.eclipse.core.runtime.IProgressMonitor monitor)
           throws JavaModelException

Description copied from interface: ITypeHierarchy

Stores the type hierarchy in an output stream. This stored hierarchy can be load by IType#loadTypeHierachy(IJavaProject, InputStream, IProgressMonitor). Listeners of this hierarchy are not stored. Only hierarchies created by the following methods can be store:

• IType#newSupertypeHierarchy(IProgressMonitor)
• IType#newTypeHierarchy(IJavaProject, IProgressMonitor)
• IType#newTypeHierarchy(IProgressMonitor)

Specified by:

store in interface ITypeHierarchy

Parameters:

output - output stream where the hierarchy will be stored

monitor - the given progress monitor

Throws:

JavaModelException - if unable to store the hierarchy in the ouput stream

See Also:

• ITypeHierarchy

toString

public String toString()

Overrides:

toString in class Object

See Also:

• ITypeHierarchy

worked

protected void worked(int work)

See Also:

• IProgressMonitor