PsiUtilCore.NullPsiElement (Unofficial IntelliJ Community Edition API docs)

java.lang.Object
- com.intellij.psi.util.PsiUtilCore.NullPsiElement

All Implemented Interfaces:: Iconable, UserDataHolder, PsiElement

Enclosing class:: PsiUtilCore

protected static class PsiUtilCore.NullPsiElement
extends java.lang.Object
implements PsiElement

Nested Class Summary
- Nested classes/interfaces inherited from interface com.intellij.openapi.util.Iconable
  Iconable.IconFlags, Iconable.LastComputedIcon

Field Summary
- Fields inherited from interface com.intellij.psi.PsiElement
  ARRAY_FACTORY, EMPTY_ARRAY
- Fields inherited from interface com.intellij.openapi.util.Iconable
  ICON_FLAG_IGNORE_MASK, ICON_FLAG_OPEN, ICON_FLAG_READ_STATUS, ICON_FLAG_VISIBILITY

Constructor Summary

Constructors
Modifier Constructor and Description

protected NullPsiElement()

Constructors
Modifier	Constructor and Description
`protected`	`NullPsiElement()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`accept(PsiElementVisitor visitor)` Passes the element to the specified visitor.
`void`	`acceptChildren(PsiElementVisitor visitor)` Passes the children of the element to the specified visitor.
`PsiElement`	`add(PsiElement element)` Adds a child to this PSI element.
`PsiElement`	`addAfter(PsiElement element, PsiElement anchor)` Adds a child to this PSI element, after the specified anchor element.
`PsiElement`	`addBefore(PsiElement element, PsiElement anchor)` Adds a child to this PSI element, before the specified anchor element.
`PsiElement`	`addRange(PsiElement first, PsiElement last)` Adds a range of elements as children to this PSI element.
`PsiElement`	`addRangeAfter(PsiElement first, PsiElement last, PsiElement anchor)` Adds a range of elements as children to this PSI element, after the specified anchor element.
`PsiElement`	`addRangeBefore(PsiElement first, PsiElement last, PsiElement anchor)` Adds a range of elements as children to this PSI element, before the specified anchor element.
`void`	`checkAdd(PsiElement element)` Checks if it is possible to add the specified element as a child to this element, and throws an exception if the add is not possible.
`void`	`checkDelete()` Checks if it is possible to delete the specified element from the tree, and throws an exception if the add is not possible.
`PsiElement`	`copy()` Creates a copy of the file containing the PSI element and returns the corresponding element in the created copy.
`void`	`delete()` Deletes this PSI element from the tree.
`void`	`deleteChildRange(PsiElement first, PsiElement last)` Deletes a range of children of this PSI element from the tree.
`PsiElement`	`findElementAt(int offset)` Finds a leaf PSI element at the specified offset from the start of the text range of this node.
`PsiReference`	`findReferenceAt(int offset)` Finds a reference at the specified offset from the start of the text range of this node.
`PsiElement []`	`getChildren()` Returns the array of children for the PSI element.
`PsiFile`	`getContainingFile()` Returns the file containing the PSI element.
`PsiElement`	`getContext()` Returns the element which should be used as the parent of this element in a tree up walk during a resolve operation.
`<T> T`	`getCopyableUserData(Key<T> key)` Returns a copyable user data object attached to this element.
`PsiElement`	`getFirstChild()` Returns the first child of the PSI element.
`javax.swing.Icon`	`getIcon(int flags)`
`Language`	`getLanguage()` Returns the language of the PSI element.
`PsiElement`	`getLastChild()` Returns the last child of the PSI element.
`PsiManager`	`getManager()` Returns the PSI manager for the project to which the PSI element belongs.
`PsiElement`	`getNavigationElement()` Returns the PSI element which should be used as a navigation target when navigation to this PSI element is requested.
`PsiElement`	`getNextSibling()` Returns the next sibling of the PSI element.
`ASTNode`	`getNode()` Returns the AST node corresponding to the element.
`PsiElement`	`getOriginalElement()` Returns the PSI element which corresponds to this element and belongs to either the project source path or class path.
`PsiElement`	`getParent()` Returns the parent of the PSI element.
`PsiElement`	`getPrevSibling()` Returns the previous sibling of the PSI element.
`Project`	`getProject()` Returns the project to which the PSI element belongs.
`PsiReference`	`getReference()` Returns the reference from this PSI element to another PSI element (or elements), if one exists.
`PsiReference []`	`getReferences()` Returns all references from this PSI element to other PSI elements.
`GlobalSearchScope`	`getResolveScope()` Returns the scope in which the declarations for the references in this PSI element are searched.
`int`	`getStartOffsetInParent()` Returns the text offset of the PSI element relative to its parent.
`java.lang.String`	`getText()` Returns the text of the PSI element.
`int`	`getTextLength()` Returns the length of text of the PSI element.
`int`	`getTextOffset()` Returns the offset in the file to which the caret should be placed when performing the navigation to the element.
`TextRange`	`getTextRange()` Returns the text range in the document occupied by the PSI element.
`<T> T`	`getUserData(Key<T> key)`
`SearchScope`	`getUseScope()` Returns the scope in which references to this element are searched.
`boolean`	`isEquivalentTo(PsiElement another)` This method shouldn't be called by clients directly, because there are no guarantees of it being symmetric.
`boolean`	`isPhysical()` Checks if an actual source or class file corresponds to the element.
`boolean`	`isValid()` Checks if this PSI element is valid.
`boolean`	`isWritable()` Checks if the contents of the element can be modified (if it belongs to a non-read-only source file.)
`boolean`	`processDeclarations(PsiScopeProcessor processor, ResolveState state, PsiElement lastParent, PsiElement place)` Passes the declarations contained in this PSI element and its children for processing to the specified scope processor.
`<T> void`	`putCopyableUserData(Key<T> key, T value)` Attaches a copyable user data object to this element.
`<T> void`	`putUserData(Key<T> key, T value)` Add a new user data value to this object.
`PsiElement`	`replace(PsiElement newElement)` Replaces this PSI element (along with all its children) with another element (along with the children).
`boolean`	`textContains(char c)` Checks if the text of this element contains the specified character.
`boolean`	`textMatches(java.lang.CharSequence text)` Checks if the text of this PSI element is equal to the specified character sequence.
`boolean`	`textMatches(PsiElement element)` Checks if the text of this PSI element is equal to the text of the specified PSI element.
`char []`	`textToCharArray()` Returns the text of the PSI element as a character array.
`java.lang.String`	`toString()` toString() should never be presented to the user.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.intellij.psi.PsiElement
getOwnReferences, getTextRangeInParent

- Constructor Detail
  - NullPsiElement
```
protected NullPsiElement()
```
- Method Detail
  - getProject
```
public Project getProject()
```
    Description copied from interface: PsiElement
    
    Returns the project to which the PSI element belongs.
    
    Specified by:
    
    getProject in interface PsiElement
    
    Returns:
    
    the project instance.
  - getLanguage
```
public Language getLanguage()
```
    Description copied from interface: PsiElement
    
    Returns the language of the PSI element.
    
    Specified by:
    
    getLanguage in interface PsiElement
    
    Returns:
    
    the language instance.
  - getManager
```
public PsiManager getManager()
```
    Description copied from interface: PsiElement
    
    Returns the PSI manager for the project to which the PSI element belongs.
    
    Specified by:
    
    getManager in interface PsiElement
    
    Returns:
    
    the PSI manager instance.
  - getChildren
```
public PsiElement [] getChildren()
```
    Description copied from interface: PsiElement
    
    Returns the array of children for the PSI element. Important: In some implementations children are only composite elements, i.e. not a leaf elements
    
    Specified by:
    
    getChildren in interface PsiElement
    
    Returns:
    
    the array of child elements.
  - getParent
```
public PsiElement getParent()
```
    Description copied from interface: PsiElement
    
    Returns the parent of the PSI element.
    
    Specified by:
    
    getParent in interface PsiElement
    
    Returns:
    
    the parent of the element, or null if the element has no parent.
  - getFirstChild
```
public PsiElement getFirstChild()
```
    Description copied from interface: PsiElement
    
    Returns the first child of the PSI element.
    
    Specified by:
    
    getFirstChild in interface PsiElement
    
    Returns:
    
    the first child, or null if the element has no children.
  - getLastChild
```
public PsiElement getLastChild()
```
    Description copied from interface: PsiElement
    
    Returns the last child of the PSI element.
    
    Specified by:
    
    getLastChild in interface PsiElement
    
    Returns:
    
    the last child, or null if the element has no children.
  - getNextSibling
```
public PsiElement getNextSibling()
```
    Description copied from interface: PsiElement
    
    Returns the next sibling of the PSI element.
    
    Specified by:
    
    getNextSibling in interface PsiElement
    
    Returns:
    
    the next sibling, or null if the node is the last in the list of siblings.
  - getPrevSibling
```
public PsiElement getPrevSibling()
```
    Description copied from interface: PsiElement
    
    Returns the previous sibling of the PSI element.
    
    Specified by:
    
    getPrevSibling in interface PsiElement
    
    Returns:
    
    the previous sibling, or null if the node is the first in the list of siblings.
  - getContainingFile
```
public PsiFile getContainingFile()
```
    Description copied from interface: PsiElement
    
    Returns the file containing the PSI element.
    Note: this method might need to traverse the whole AST up, which can be slow in deep trees, so invoking this method should be avoided if possible.
    
    Specified by:
    
    getContainingFile in interface PsiElement
    
    Returns:
    
    the file instance, or null if the PSI element is not contained in a file (for example, the element represents a package or directory).
  - getTextRange
```
public TextRange getTextRange()
```
    Description copied from interface: PsiElement
    
    Returns the text range in the document occupied by the PSI element.
    Note: it works in O(tree_depth) time, which can be slow in deep trees, so invoking this method should be avoided if possible.
    
    Specified by:
    
    getTextRange in interface PsiElement
    
    Returns:
    
    the text range.
  - getStartOffsetInParent
```
public int getStartOffsetInParent()
```
    Description copied from interface: PsiElement
    
    Returns the text offset of the PSI element relative to its parent.
    
    Specified by:
    
    getStartOffsetInParent in interface PsiElement
    
    Returns:
    
    the relative offset.
  - getTextLength
```
public int getTextLength()
```
    Description copied from interface: PsiElement
    
    Returns the length of text of the PSI element.
    
    Specified by:
    
    getTextLength in interface PsiElement
    
    Returns:
    
    the text length.
  - findElementAt
```
public PsiElement findElementAt(int offset)
```
    Description copied from interface: PsiElement
    
    Finds a leaf PSI element at the specified offset from the start of the text range of this node.
    
    Specified by:
    
    findElementAt in interface PsiElement
    
    Parameters:
    
    offset - the relative offset for which the PSI element is requested.
    
    Returns:
    
    the element at the offset, or null if none is found.
  - findReferenceAt
```
public PsiReference findReferenceAt(int offset)
```
    Description copied from interface: PsiElement
    
    Finds a reference at the specified offset from the start of the text range of this node.
    
    Specified by:
    
    findReferenceAt in interface PsiElement
    
    Parameters:
    
    offset - the relative offset for which the reference is requested.
    
    Returns:
    
    the reference at the offset, or null if none is found.
  - getTextOffset
```
public int getTextOffset()
```
    Description copied from interface: PsiElement
    
    Returns the offset in the file to which the caret should be placed when performing the navigation to the element. (For classes implementing PsiNamedElement, this should return the offset in the file of the name identifier.)
    
    Specified by:
    
    getTextOffset in interface PsiElement
    
    Returns:
    
    the offset of the PSI element.
  - getText
```
public java.lang.String getText()
```
    Description copied from interface: PsiElement
    
    Returns the text of the PSI element.
    Note: This call requires traversing whole subtree, so it can be expensive for composite elements, and should be avoided if possible.
    
    Specified by:
    
    getText in interface PsiElement
    
    Returns:
    
    the element text.
    
    See Also:
    
    PsiElement.textMatches(java.lang.CharSequence), PsiElement.textContains(char)
  - textToCharArray
```
public char [] textToCharArray()
```
    Description copied from interface: PsiElement
    
    Returns the text of the PSI element as a character array.
    
    Specified by:
    
    textToCharArray in interface PsiElement
    
    Returns:
    
    the element text as a character array.
  - getNavigationElement
```
public PsiElement getNavigationElement()
```
    Description copied from interface: PsiElement
    
    Returns the PSI element which should be used as a navigation target when navigation to this PSI element is requested. The method can either return this or substitute a different element if this element does not have an associated file and offset. (For example, if the source code of a library is attached to a project, the navigation element for a compiled library class is its source class.)
    
    Specified by:
    
    getNavigationElement in interface PsiElement
    
    Returns:
    
    the navigation target element.
  - getOriginalElement
```
public PsiElement getOriginalElement()
```
    Description copied from interface: PsiElement
    
    Returns the PSI element which corresponds to this element and belongs to either the project source path or class path. The method can either return this or substitute a different element if this element does not belong to the source path or class path. (For example, the original element for a library source file is the corresponding compiled class file.)
    
    Specified by:
    
    getOriginalElement in interface PsiElement
    
    Returns:
    
    the original element.
  - textMatches
```
public boolean textMatches(java.lang.CharSequence text)
```
    Description copied from interface: PsiElement
    
    Checks if the text of this PSI element is equal to the specified character sequence.
    
    Specified by:
    
    textMatches in interface PsiElement
    
    Parameters:
    
    text - the character sequence to compare with.
    
    Returns:
    
    true if the text is equal, false otherwise.
  - textMatches
```
public boolean textMatches(PsiElement element)
```
    Description copied from interface: PsiElement
    
    Checks if the text of this PSI element is equal to the text of the specified PSI element.
    
    Specified by:
    
    textMatches in interface PsiElement
    
    Parameters:
    
    element - the element to compare the text with.
    
    Returns:
    
    true if the text is equal, false otherwise.
  - textContains
```
public boolean textContains(char c)
```
    Description copied from interface: PsiElement
    
    Checks if the text of this element contains the specified character.
    
    Specified by:
    
    textContains in interface PsiElement
    
    Parameters:
    
    c - the character to search for.
    
    Returns:
    
    true if the character is found, false otherwise.
  - accept
```
public void accept(PsiElementVisitor visitor)
```
    Description copied from interface: PsiElement
    
    Passes the element to the specified visitor.
    
    Specified by:
    
    accept in interface PsiElement
    
    Parameters:
    
    visitor - the visitor to pass the element to.
  - acceptChildren
```
public void acceptChildren(PsiElementVisitor visitor)
```
    Description copied from interface: PsiElement
    
    Passes the children of the element to the specified visitor.
    
    Specified by:
    
    acceptChildren in interface PsiElement
    
    Parameters:
    
    visitor - the visitor to pass the children to.
  - copy
```
public PsiElement copy()
```
    Description copied from interface: PsiElement
    
    Creates a copy of the file containing the PSI element and returns the corresponding element in the created copy. Resolve operations performed on elements in the copy of the file will resolve to elements in the copy, not in the original file.
    
    Specified by:
    
    copy in interface PsiElement
    
    Returns:
    
    the element in the file copy corresponding to this element.
  - add
```
public PsiElement add(PsiElement element)
```
    Description copied from interface: PsiElement
    
    Adds a child to this PSI element.
    
    Specified by:
    
    add in interface PsiElement
    
    Parameters:
    
    element - the child element to add.
    
    Returns:
    
    the element which was actually added (either element or its copy).
  - addBefore
```
public PsiElement addBefore(PsiElement element,
                            PsiElement anchor)
```
    Description copied from interface: PsiElement
    
    Adds a child to this PSI element, before the specified anchor element.
    
    Specified by:
    
    addBefore in interface PsiElement
    
    Parameters:
    
    element - the child element to add.
    
    anchor - the anchor before which the child element is inserted (must be a child of this PSI element)
    
    Returns:
    
    the element which was actually added (either element or its copy).
  - addAfter
```
public PsiElement addAfter(PsiElement element,
                           PsiElement anchor)
```
    Description copied from interface: PsiElement
    
    Adds a child to this PSI element, after the specified anchor element.
    
    Specified by:
    
    addAfter in interface PsiElement
    
    Parameters:
    
    element - the child element to add.
    
    anchor - the anchor after which the child element is inserted (must be a child of this PSI element)
    
    Returns:
    
    the element which was actually added (either element or its copy).
  - checkAdd
```
public void checkAdd(PsiElement element)
```
    Description copied from interface: PsiElement
    
    Checks if it is possible to add the specified element as a child to this element, and throws an exception if the add is not possible. Does not actually modify anything.
    
    Specified by:
    
    checkAdd in interface PsiElement
    
    Parameters:
    
    element - the child element to check the add possibility.
  - addRange
```
public PsiElement addRange(PsiElement first,
                           PsiElement last)
```
    Description copied from interface: PsiElement
    
    Adds a range of elements as children to this PSI element.
    
    Specified by:
    
    addRange in interface PsiElement
    
    Parameters:
    
    first - the first child element to add.
    
    last - the last child element to add (must have the same parent as first)
    
    Returns:
    
    the first child element which was actually added (either first or its copy).
  - addRangeBefore
```
public PsiElement addRangeBefore(PsiElement first,
                                 PsiElement last,
                                 PsiElement anchor)
```
    Description copied from interface: PsiElement
    
    Adds a range of elements as children to this PSI element, before the specified anchor element.
    
    Specified by:
    
    addRangeBefore in interface PsiElement
    
    Parameters:
    
    first - the first child element to add.
    
    last - the last child element to add (must have the same parent as first)
    
    anchor - the anchor before which the child element is inserted (must be a child of this PSI element)
    
    Returns:
    
    the first child element which was actually added (either first or its copy).
  - addRangeAfter
```
public PsiElement addRangeAfter(PsiElement first,
                                PsiElement last,
                                PsiElement anchor)
```
    Description copied from interface: PsiElement
    
    Adds a range of elements as children to this PSI element, after the specified anchor element.
    
    Specified by:
    
    addRangeAfter in interface PsiElement
    
    Parameters:
    
    first - the first child element to add.
    
    last - the last child element to add (must have the same parent as first)
    
    anchor - the anchor after which the child element is inserted (must be a child of this PSI element)
    
    Returns:
    
    the first child element which was actually added (either first or its copy).
  - delete
```
public void delete()
```
    Description copied from interface: PsiElement
    
    Deletes this PSI element from the tree.
    
    Specified by:
    
    delete in interface PsiElement
  - checkDelete
```
public void checkDelete()
```
    Description copied from interface: PsiElement
    
    Checks if it is possible to delete the specified element from the tree, and throws an exception if the add is not possible. Does not actually modify anything.
    
    Specified by:
    
    checkDelete in interface PsiElement
  - deleteChildRange
```
public void deleteChildRange(PsiElement first,
                             PsiElement last)
```
    Description copied from interface: PsiElement
    
    Deletes a range of children of this PSI element from the tree.
    
    Specified by:
    
    deleteChildRange in interface PsiElement
    
    Parameters:
    
    first - the first child to delete (must be a child of this PSI element)
    
    last - the last child to delete (must be a child of this PSI element)
  - replace
```
public PsiElement replace(PsiElement newElement)
```
    Description copied from interface: PsiElement
    
    Replaces this PSI element (along with all its children) with another element (along with the children).
    
    Specified by:
    
    replace in interface PsiElement
    
    Parameters:
    
    newElement - the element to replace this element with.
    
    Returns:
    
    the element which was actually inserted in the tree (either newElement or its copy)
  - isValid
```
public boolean isValid()
```
    Description copied from interface: PsiElement
    Checks if this PSI element is valid. Valid elements and their hierarchy members can be accessed for reading and writing. Valid elements can still correspond to underlying documents whose text is different, when those documents have been changed and not yet committed (PsiDocumentManager.commitDocument(com.intellij.openapi.editor.Document)). (In this case an attempt to change PSI will result in an exception). Any access to invalid elements results in PsiInvalidElementAccessException. Once invalid, elements can't become valid again. Elements become invalid in following cases:
    - They have been deleted via PSI operation (PsiElement.delete())
    - They have been deleted as a result of an incremental reparse (document commit)
    - Their containing file has been changed externally, or renamed so that its PSI had to be rebuilt from scratch
    Specified by:
    
    isValid in interface PsiElement
    
    Returns:
    
    true if the element is valid, false otherwise.
    
    See Also:
    
    PsiUtilCore.ensureValid(PsiElement)
  - isWritable
```
public boolean isWritable()
```
    Description copied from interface: PsiElement
    
    Checks if the contents of the element can be modified (if it belongs to a non-read-only source file.)
    
    Specified by:
    
    isWritable in interface PsiElement
    
    Returns:
    
    true if the element can be modified, false otherwise.
  - getReference
```
public PsiReference getReference()
```
    Description copied from interface: PsiElement
    
    Returns the reference from this PSI element to another PSI element (or elements), if one exists. If the element has multiple associated references (see PsiElement.getReferences() for an example), returns the first associated reference.
    
    Specified by:
    
    getReference in interface PsiElement
    
    Returns:
    
    the reference instance, or null if the PSI element does not have any associated references.
    
    See Also:
    
    ReferencesSearch
  - getReferences
```
public PsiReference [] getReferences()
```
    Description copied from interface: PsiElement
    
    Returns all references from this PSI element to other PSI elements. An element can have multiple references when, for example, the element is a string literal containing multiple sub-strings which are valid full-qualified class names. If an element contains only one text fragment which acts as a reference but the reference has multiple possible targets, PsiPolyVariantReference should be used instead of returning multiple references.
    Actually, it's preferable to call PsiReferenceService.getReferences(com.intellij.psi.PsiElement, com.intellij.psi.PsiReferenceService.Hints) instead as it allows adding references by plugins when the element implements ContributedReferenceHost.
    
    Specified by:
    
    getReferences in interface PsiElement
    
    Returns:
    
    the array of references, or an empty array if the element has no associated references.
    
    See Also:
    
    PsiReferenceService.getReferences(com.intellij.psi.PsiElement, com.intellij.psi.PsiReferenceService.Hints), ReferencesSearch
  - getCopyableUserData
```
public <T> T getCopyableUserData(Key<T> key)
```
    Description copied from interface: PsiElement
    
    Returns a copyable user data object attached to this element.
    
    Specified by:
    
    getCopyableUserData in interface PsiElement
    
    Parameters:
    
    key - the key for accessing the user data object.
    
    Returns:
    
    the user data object, or null if no such object is found in the current element.
    
    See Also:
    
    PsiElement.putCopyableUserData(Key, Object)
  - putCopyableUserData
```
public <T> void putCopyableUserData(Key<T> key,
                                    T value)
```
    Description copied from interface: PsiElement
    
    Attaches a copyable user data object to this element. Copyable user data objects are copied when the PSI elements are copied.
    
    Specified by:
    
    putCopyableUserData in interface PsiElement
    
    Parameters:
    
    key - the key for accessing the user data object.
    
    value - the user data object to attach.
    
    See Also:
    
    PsiElement.getCopyableUserData(Key)
  - processDeclarations
```
public boolean processDeclarations(PsiScopeProcessor processor,
                                   ResolveState state,
                                   PsiElement lastParent,
                                   PsiElement place)
```
    Description copied from interface: PsiElement
    
    Passes the declarations contained in this PSI element and its children for processing to the specified scope processor.
    
    Specified by:
    
    processDeclarations in interface PsiElement
    
    Parameters:
    
    processor - the processor receiving the declarations.
    
    lastParent - the child of this element has been processed during the previous step of the tree up walk (declarations under this element do not need to be processed again)
    
    place - the original element from which the tree up walk was initiated.
    
    Returns:
    
    true if the declaration processing should continue or false if it should be stopped.
  - getContext
```
public PsiElement getContext()
```
    Description copied from interface: PsiElement
    
    Returns the element which should be used as the parent of this element in a tree up walk during a resolve operation. For most elements, this returns getParent(), but the context can be overridden for some elements like code fragments (see JavaCodeFragmentFactory.createCodeBlockCodeFragment(String, PsiElement, boolean)).
    
    Specified by:
    
    getContext in interface PsiElement
    
    Returns:
    
    the resolve context element.
  - isPhysical
```
public boolean isPhysical()
```
    Description copied from interface: PsiElement
    
    Checks if an actual source or class file corresponds to the element. Non-physical elements include, for example, PSI elements created for the watch expressions in the debugger. Non-physical elements do not generate tree change events. Also, PsiDocumentManager.getDocument(PsiFile) returns null for non-physical elements. Not to be confused with FileViewProvider.isPhysical().
    
    Specified by:
    
    isPhysical in interface PsiElement
    
    Returns:
    
    true if the element is physical, false otherwise.
  - getResolveScope
```
public GlobalSearchScope getResolveScope()
```
    Description copied from interface: PsiElement
    
    Returns the scope in which the declarations for the references in this PSI element are searched.
    
    Specified by:
    
    getResolveScope in interface PsiElement
    
    Returns:
    
    the resolve scope instance.
  - getUseScope
```
public SearchScope getUseScope()
```
    Description copied from interface: PsiElement
    
    Returns the scope in which references to this element are searched.
    
    Specified by:
    
    getUseScope in interface PsiElement
    
    Returns:
    
    the search scope instance.
    
    See Also:
    
    PsiSearchHelper.getUseScope(PsiElement)
  - getNode
```
public ASTNode getNode()
```
    Description copied from interface: PsiElement
    
    Returns the AST node corresponding to the element.
    
    Specified by:
    
    getNode in interface PsiElement
    
    Returns:
    
    the AST node instance.
  - getUserData
```
public <T> T getUserData(Key<T> key)
```
    Specified by:
    
    getUserData in interface UserDataHolder
    
    Returns:
    
    a user data value associated with this object. Doesn't require read action.
  - putUserData
```
public <T> void putUserData(Key<T> key,
                            T value)
```
    Description copied from interface: UserDataHolder
    
    Add a new user data value to this object. Doesn't require write action.
    
    Specified by:
    
    putUserData in interface UserDataHolder
  - getIcon
```
public javax.swing.Icon getIcon(int flags)
```
    Specified by:
    
    getIcon in interface Iconable
  - isEquivalentTo
```
public boolean isEquivalentTo(PsiElement another)
```
    Description copied from interface: PsiElement
    
    This method shouldn't be called by clients directly, because there are no guarantees of it being symmetric. It's called by PsiManager.areElementsEquivalent(PsiElement, PsiElement) internally, which clients should invoke instead.
    Implementations of this method should return true if the parameter is resolve-equivalent to this, i.e. it represents the same entity from the language perspective. See also PsiManager.areElementsEquivalent(PsiElement, PsiElement) documentation.
    
    Specified by:
    
    isEquivalentTo in interface PsiElement
  - toString
```
public java.lang.String toString()
```
    Description copied from interface: PsiElement
    
    toString() should never be presented to the user.
    
    Specified by:
    
    toString in interface PsiElement
    
    Overrides:
    
    toString in class java.lang.Object

Class PsiUtilCore.NullPsiElement

Nested Class Summary

Nested classes/interfaces inherited from interface com.intellij.openapi.util.Iconable

Field Summary

Fields inherited from interface com.intellij.psi.PsiElement

Fields inherited from interface com.intellij.openapi.util.Iconable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.intellij.psi.PsiElement

Constructor Detail

NullPsiElement

Method Detail

getProject

getLanguage

getManager

getChildren

getParent

getFirstChild

getLastChild

getNextSibling

getPrevSibling

getContainingFile

getTextRange

getStartOffsetInParent

getTextLength

findElementAt

findReferenceAt

getTextOffset

getText

textToCharArray

getNavigationElement

getOriginalElement

textMatches

textMatches

textContains

accept

acceptChildren

copy

add

addBefore

addAfter

checkAdd

addRange

addRangeBefore

addRangeAfter

delete

checkDelete

deleteChildRange

replace

isValid

isWritable

getReference

getReferences

getCopyableUserData

putCopyableUserData

processDeclarations

getContext

isPhysical

getResolveScope

getUseScope

getNode

getUserData

putUserData

getIcon

isEquivalentTo

toString