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

Class ModularClassFile

java.lang.Object

org.eclipse.core.runtime.PlatformObject

org.aspectj.org.eclipse.jdt.internal.core.JavaElement

org.aspectj.org.eclipse.jdt.internal.core.Openable

org.aspectj.org.eclipse.jdt.internal.core.AbstractClassFile

org.aspectj.org.eclipse.jdt.internal.core.ModularClassFile

All Implemented Interfaces:

IBufferChangedListener, IClassFile, ICodeAssist, IJavaElement, IModularClassFile, IOpenable, IParent, ISourceReference, ITypeRoot, SuffixConstants, org.eclipse.core.runtime.IAdaptable

public class ModularClassFile
extends AbstractClassFile
implements IModularClassFile

A handle to a modular class file.

Field Summary

Fields inherited from class org.aspectj.org.eclipse.jdt.internal.core.AbstractClassFile

name

Fields inherited from class org.aspectj.org.eclipse.jdt.internal.core.JavaElement

JEM_ANNOTATION, JEM_CLASSFILE, JEM_COMPILATIONUNIT, JEM_COUNT, JEM_DELIMITER_ESCAPE, JEM_ESCAPE, JEM_FIELD, JEM_IMPORTDECLARATION, JEM_INITIALIZER, JEM_JAVAPROJECT, JEM_LAMBDA_EXPRESSION, JEM_LAMBDA_METHOD, JEM_LOCALVARIABLE, JEM_METHOD, JEM_MODULAR_CLASSFILE, JEM_MODULE, JEM_PACKAGEDECLARATION, JEM_PACKAGEFRAGMENT, JEM_PACKAGEFRAGMENTROOT, JEM_STRING, JEM_TYPE, JEM_TYPE_PARAMETER, NO_ELEMENTS, NO_INFO, NO_STRINGS

Fields inherited from interface org.aspectj.org.eclipse.jdt.core.IJavaElement

ANNOTATION, CLASS_FILE, COMPILATION_UNIT, FIELD, IMPORT_CONTAINER, IMPORT_DECLARATION, INITIALIZER, JAVA_MODEL, JAVA_MODULE, JAVA_PROJECT, LOCAL_VARIABLE, METHOD, PACKAGE_DECLARATION, PACKAGE_FRAGMENT, PACKAGE_FRAGMENT_ROOT, TYPE, TYPE_PARAMETER

Fields inherited from interface org.aspectj.org.eclipse.jdt.internal.compiler.util.SuffixConstants

EXTENSION_aj, EXTENSION_AJ, EXTENSION_class, EXTENSION_CLASS, EXTENSION_java, EXTENSION_JAVA, EXTENSION_jmod, EXTENSION_JMOD, SUFFIX_aj, SUFFIX_AJ, SUFFIX_class, SUFFIX_CLASS, SUFFIX_java, SUFFIX_JAVA, SUFFIX_STRING_aj, SUFFIX_STRING_AJ, SUFFIX_STRING_class, SUFFIX_STRING_CLASS, SUFFIX_STRING_java, SUFFIX_STRING_JAVA

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ModularClassFile(PackageFragment parent)

Method Summary

Modifier and Type	Method	Description
protected boolean	buildStructure(OpenableElementInfo info, org.eclipse.core.runtime.IProgressMonitor pm, Map<IJavaElement,IElementInfo> newElements, org.eclipse.core.resources.IResource underlyingResource)	Creates the single child element for this class file adding the resulting new handle (of type IBinaryModule) and info object to the newElements table.
void	codeComplete(int offset, CompletionRequestor requestor, WorkingCopyOwner owner, org.eclipse.core.runtime.IProgressMonitor monitor)	Performs code completion at the given offset position in this compilation unit, reporting results to the given completion requestor.
IJavaElement[]	codeSelect(int offset, int length, WorkingCopyOwner owner)	Returns the Java elements corresponding to the given selected text in this compilation unit.
protected void	escapeMementoName(StringBuilder buffer, String mementoName)
boolean	exists()	Returns whether this Java element exists in the model.
IType	findPrimaryType()	Finds the primary type of this Java type root (that is, the type with the same name as the compilation unit, or the type of a class file), or null if no such a type exists.
IBinaryModule	getBinaryModuleInfo()	Returns the IBinaryModule specific for this IClassFile, based on its underlying resource, or null if unable to create the diet class file.
IJavaElement	getElementAt(int position)	Returns the smallest element within this Java type root that includes the given source position (that is, a method, field, etc.), or null if there is no element other than the Java type root itself at the given position, or if the given position is not within the source range of the source of this Java type root.
IJavaElement	getHandleFromMemento(String token, MementoTokenizer memento, WorkingCopyOwner owner)
protected char	getHandleMementoDelimiter()	Returns the char that marks the start of this handles contribution to a memento.
IModuleDescription	getModule()	Returns the module description contained in this type root or null if there is no module in this type root.
IType	getType()	Deprecated. should only be used as IOrdinaryClassFile.getType().
ICompilationUnit	getWorkingCopy(WorkingCopyOwner owner, org.eclipse.core.runtime.IProgressMonitor monitor)	Returns a shared working copy on this compilation unit or class file using the given working copy owner to create the buffer.
boolean	isClass()	Returns whether this type represents a class.
boolean	isInterface()	Returns whether this type represents an interface.
protected IBuffer	openBuffer(org.eclipse.core.runtime.IProgressMonitor pm, IElementInfo info)	Opens and returns buffer on the source code associated with this class file.

Methods inherited from class org.aspectj.org.eclipse.jdt.internal.core.AbstractClassFile

becomeWorkingCopy, calculateHashCode, codeComplete, codeComplete, codeComplete, codeComplete, codeComplete, codeComplete, codeSelect, createElementInfo, equals, findElement, getBuffer, getBytes, getClassFileContent, getCorrespondingResource, getElementAtConsideringSibling, getElementName, getElementType, getNameRange, getPath, getPathIdentifier, getSource, getSourceRange, getTypeRoot, getWorkingCopy, hasBuffer, isReadOnly, resource, validateExistence

Methods inherited from class org.aspectj.org.eclipse.jdt.internal.core.Openable

bufferChanged, canBeRemovedFromCache, canBufferBeRemovedFromCache, closeBuffer, closing, codeComplete, codeSelect, findRecommendedLineSeparator, generateInfos, getBufferFactory, getBufferManager, getOpenable, getPackageFragmentRoot, getResource, getUnderlyingResource, hasUnsavedChanges, ignoreErrorStatus, isConsistent, isOpen, isSourceElement, isStructureKnown, makeConsistent, open, openAncestors, resource, resourceExists, save

Methods inherited from class org.aspectj.org.eclipse.jdt.internal.core.JavaElement

appendEscapedDelimiter, close, findNode, getAncestor, getAttachedJavadoc, getChildren, getChildrenOfType, getClassFile, getCompilationUnit, getElementInfo, getElementInfo, getHandleFromMemento, getHandleIdentifier, getHandleMemento, getHandleMemento, getJavadocBaseLocation, getJavaModel, getJavaProject, getLibraryJavadocLocation, getOpenableParent, getParent, getPrimaryElement, getPrimaryElement, getSchedulingRule, getSourceElementAt, getSourceMapper, getURLContents, hasChildren, hashCode, isAncestorOf, newDoesNotExistStatus, newJavaModelException, newNotPresentException, openWhenClosed, readableName, resetHashCode, resolved, tabString, toDebugString, toString, toString, toStringAncestors, toStringChildren, toStringInfo, toStringInfo, toStringName, toStringWithAncestors, toStringWithAncestors, unresolved, validateAndCache

Methods inherited from class org.eclipse.core.runtime.PlatformObject

getAdapter

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.core.runtime.IAdaptable

getAdapter

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IClassFile

becomeWorkingCopy, getBytes, getWorkingCopy

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.ICodeAssist

codeComplete, codeComplete, codeComplete, codeComplete, codeComplete, codeComplete, codeSelect

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IJavaElement

getAncestor, getAttachedJavadoc, getCorrespondingResource, getElementName, getElementType, getHandleIdentifier, getJavaModel, getJavaProject, getOpenable, getParent, getPath, getPrimaryElement, getResource, getSchedulingRule, getUnderlyingResource, isReadOnly, isStructureKnown

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IOpenable

close, findRecommendedLineSeparator, getBuffer, hasUnsavedChanges, isConsistent, isOpen, makeConsistent, open, save

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IParent

getChildren, hasChildren

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.ISourceReference

getNameRange, getSource, getSourceRange

Constructor Details

ModularClassFile

protected ModularClassFile(PackageFragment parent)

Method Details

buildStructure

protected boolean buildStructure(OpenableElementInfo info,
 org.eclipse.core.runtime.IProgressMonitor pm,
 Map<IJavaElement,IElementInfo> newElements,
 org.eclipse.core.resources.IResource underlyingResource)
                          throws JavaModelException

Creates the single child element for this class file adding the resulting new handle (of type IBinaryModule) and info object to the newElements table. Returns true if successful, or false if an error is encountered parsing the class file.

Specified by:

buildStructure in class Openable

Throws:

JavaModelException

See Also:

• Openable
• Signature

codeComplete

public void codeComplete(int offset,
 CompletionRequestor requestor,
 WorkingCopyOwner owner,
 org.eclipse.core.runtime.IProgressMonitor monitor)
                  throws JavaModelException

Description copied from interface: ICodeAssist

Performs code completion at the given offset position in this compilation unit, reporting results to the given completion requestor. The offset is the 0-based index of the character, after which code assist is desired. An offset of -1 indicates to code assist at the beginning of this compilation unit. It considers types in the working copies with the given owner first. In other words, the owner's working copies will take precedence over their original compilation units in the workspace.

Note that if a working copy is empty, it will be as if the original compilation unit had been deleted.

If IProgressMonitor is not null then some proposals which can be very long to compute are proposed. To avoid that the code assist operation take too much time a IProgressMonitor which automatically cancel the code assist operation when a specified amount of time is reached could be used.

 new IProgressMonitor() {
     private final static int TIMEOUT = 500; //ms
     private long endTime;
     public void beginTask(String name, int totalWork) {
         fEndTime= System.currentTimeMillis() + TIMEOUT;
     }
     public boolean isCanceled() {
         return endTime <= System.currentTimeMillis();
     }
     ...
 };
 
 

Specified by:

codeComplete in interface ICodeAssist

Specified by:

codeComplete in class AbstractClassFile

Parameters:

offset - the given offset position

requestor - the given completion requestor

owner - the owner of working copies that take precedence over their original compilation units

monitor - the progress monitor used to report progress

Throws:

JavaModelException - if code assist could not be performed. Reasons include:

• This Java element does not exist (ELEMENT_DOES_NOT_EXIST)
• The position specified is < -1 or is greater than this compilation unit's source length (INDEX_OUT_OF_BOUNDS)

codeSelect

public IJavaElement[] codeSelect(int offset,
 int length,
 WorkingCopyOwner owner)
                          throws JavaModelException

Description copied from interface: ICodeAssist

Returns the Java elements corresponding to the given selected text in this compilation unit. The offset is the 0-based index of the first selected character. The length is the number of selected characters. It considers types in the working copies with the given owner first. In other words, the owner's working copies will take precedence over their original compilation units in the workspace.

Note that if the length is 0 and the offset is inside an identifier or the index just after an identifier then this identifier is considered as the selection.

Note that if a working copy is empty, it will be as if the original compilation unit had been deleted.

Specified by:

codeSelect in interface ICodeAssist

Specified by:

codeSelect in class AbstractClassFile

Parameters:

offset - the given offset position

length - the number of selected characters

owner - the owner of working copies that take precedence over their original compilation units

Returns:

the Java elements corresponding to the given selected text

Throws:

JavaModelException - if code resolve could not be performed. Reasons include:

• This Java element does not exist (ELEMENT_DOES_NOT_EXIST)
• The range specified is not within this element's source range (INDEX_OUT_OF_BOUNDS)

findPrimaryType

public IType findPrimaryType()

Description copied from interface: ITypeRoot

Finds the primary type of this Java type root (that is, the type with the same name as the compilation unit, or the type of a class file), or null if no such a type exists.

Specified by:

findPrimaryType in interface ITypeRoot

Returns:

the found primary type of this Java type root, or null if no such a type exists

isClass

public boolean isClass()
                throws JavaModelException

Description copied from interface: IClassFile

Returns whether this type represents a class. This is not guaranteed to be instantaneous, as it may require parsing the underlying file.

Specified by:

isClass in interface IClassFile

Returns:

true if the class file represents a class.

Throws:

JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource

isInterface

public boolean isInterface()
                    throws JavaModelException

Description copied from interface: IClassFile

Returns whether this type represents an interface. This is not guaranteed to be instantaneous, as it may require parsing the underlying file.

Specified by:

isInterface in interface IClassFile

Returns:

true if the class file represents an interface.

Throws:

JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource

getType

@Deprecated
public IType getType()

Deprecated.

should only be used as IOrdinaryClassFile.getType().

Description copied from interface: IClassFile

Returns the type contained in this class file. This is a handle-only method. The type may or may not exist.

Specified by:

getType in interface IClassFile

Returns:

never returns.

Throws:

UnsupportedOperationException - always.

See Also:

• IClassFile.getType()

getBinaryModuleInfo

public IBinaryModule getBinaryModuleInfo()
                                  throws JavaModelException

Returns the IBinaryModule specific for this IClassFile, based on its underlying resource, or null if unable to create the diet class file. There are two cases to consider:

• a class file corresponding to an IFile resource
• a class file corresponding to a zip entry in a JAR

Throws:

JavaModelException - when the IFile resource or JAR is not available or when this class file is not present in the JAR

getElementAt

public IJavaElement getElementAt(int position)
                          throws JavaModelException

Description copied from interface: ITypeRoot

Returns the smallest element within this Java type root that includes the given source position (that is, a method, field, etc.), or null if there is no element other than the Java type root itself at the given position, or if the given position is not within the source range of the source of this Java type root.

Specified by:

getElementAt in interface ITypeRoot

Parameters:

position - a source position inside the Java type root

Returns:

the innermost Java element enclosing a given source position or null if none (excluding the Java type root).

Throws:

JavaModelException - if the Java type root does not exist or if an exception occurs while accessing its corresponding resource

See Also:

• ITypeRoot

getHandleFromMemento

public IJavaElement getHandleFromMemento(String token,
 MementoTokenizer memento,
 WorkingCopyOwner owner)

Specified by:

getHandleFromMemento in class JavaElement

getHandleMementoDelimiter

protected char getHandleMementoDelimiter()

Description copied from class: JavaElement

Returns the char that marks the start of this handles contribution to a memento.

Specified by:

getHandleMementoDelimiter in class JavaElement

See Also:

• JavaElement.getHandleMemento()

escapeMementoName

protected void escapeMementoName(StringBuilder buffer,
 String mementoName)

Overrides:

escapeMementoName in class JavaElement

getWorkingCopy

public ICompilationUnit getWorkingCopy(WorkingCopyOwner owner,
 org.eclipse.core.runtime.IProgressMonitor monitor)
                                throws JavaModelException

Description copied from interface: ITypeRoot

Returns a shared working copy on this compilation unit or class file using the given working copy owner to create the buffer. If this is already a working copy of the given owner, the element itself is returned. This API can only answer an already existing working copy if it is based on the same original Java type root AND was using the same working copy owner (that is, as defined by Object.equals(java.lang.Object)).

The life time of a shared working copy is as follows:

• The first call to ITypeRoot.getWorkingCopy(WorkingCopyOwner, IProgressMonitor) creates a new working copy for this element
• Subsequent calls increment an internal counter.
• A call to ICompilationUnit.discardWorkingCopy() decrements the internal counter.
• When this counter is 0, the working copy is discarded.

So users of this method must discard exactly once the working copy.

Note that the working copy owner will be used for the life time of the shared working copy, that is if the working copy is closed then reopened, this owner will be used. The buffer will be automatically initialized with the original's Java type root content upon creation.

When the shared working copy instance is created, an ADDED IJavaElementDelta is reported on this working copy.

A working copy can be created on a not-yet existing compilation unit. In particular, such a working copy can then be committed in order to create the corresponding compilation unit.

Note that possible problems of this working copy are reported using this method only if the given working copy owner returns a problem requestor for this working copy (see WorkingCopyOwner.getProblemRequestor(ICompilationUnit)).

Specified by:

getWorkingCopy in interface ITypeRoot

Parameters:

owner - the working copy owner that creates a buffer that is used to get the content of the working copy

monitor - a progress monitor used to report progress while opening this compilation unit or null if no progress should be reported

Returns:

a new working copy of this Java type root using the given owner to create the buffer, or this Java type root if it is already a working copy

Throws:

JavaModelException - if the contents of this element can not be determined.

openBuffer

protected IBuffer openBuffer(org.eclipse.core.runtime.IProgressMonitor pm,
 IElementInfo info)
                      throws JavaModelException

Opens and returns buffer on the source code associated with this class file. Maps the source code to the children elements of this class file. If no source code is associated with this class file, null is returned.

Overrides:

openBuffer in class Openable

Throws:

JavaModelException

See Also:

• Openable

getModule

public IModuleDescription getModule()
                             throws JavaModelException

Description copied from interface: ITypeRoot

Returns the module description contained in this type root or null if there is no module in this type root.

Only subtype IModularClassFile promises to return non-null.

Specified by:

getModule in interface IModularClassFile

Specified by:

getModule in interface ITypeRoot

Returns:

the module description contained in the type root or null.

Throws:

JavaModelException

exists

public boolean exists()

Description copied from interface: IJavaElement

Returns whether this Java element exists in the model.

Java elements are handle objects that may or may not be backed by an actual element. Java elements that are backed by an actual element are said to "exist", and this method returns true. For Java elements that are not working copies, it is always the case that if the element exists, then its parent also exists (provided it has one) and includes the element as one of its children. It is therefore possible to navigated to any existing Java element from the root of the Java model along a chain of existing Java elements. On the other hand, working copies are said to exist until they are destroyed (with IWorkingCopy.destroy). Unlike regular Java elements, a working copy never shows up among the children of its parent element (which may or may not exist).

Specified by:

exists in interface IJavaElement

Specified by:

exists in interface ISourceReference

Overrides:

exists in class Openable

Returns:

true if this element exists in the Java model, and false if this element does not exist

See Also:

• IJavaElement