|
Oracle Fusion Middleware Java API Reference for Oracle Extension SDK Reference 11g Release 1 (11.1.1.7.2) E13403-10 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object
oracle.javatools.editor.language.DefaultWordLocator
public final class DefaultWordLocator
A simple WordLocator
implementation suitable for most artificial languages. The implementation is particularly targetted to Java, but in practice works for a wide variety of languages, including XML. Characters fit into either identifier, punctuation, or space categories. In general, a word is a run of identifier characters followed by a punctuation or space character, or a run of punctuation characters followed by an identifier or space character. Space characters are never part of a word.
Subclasses can redefine what characters are identifier characters by overriding isIdentifierCharacter(int, boolean)
and what characters are space characters by overriding isSpaceCharacter(int)
; punctuation characters are everything else. Subclasses can redefine how word boundaries are recognized by overriding isWordStart(int,boolean,boolean,boolean,boolean)
and/or isWordEnd(int,boolean,boolean,boolean,boolean)
.
WordLocator
, LanguageSupport.getWordLocator()
Constructor Summary | |
---|---|
DefaultWordLocator(LanguageSupport support) Constructs a new DefaultWordLocator. |
Method Summary | |
---|---|
int |
getNextWordEnd(int offset) Gets the offset of the word end after an offset. |
int |
getNextWordStart(int offset) Gets the offset of the word start after an offset. |
int |
getPreviousWordEnd(int offset) Gets the offset of the word end before an offset. |
int |
getPreviousWordStart(int offset) Gets the offset of the word start before an offset. |
protected ReadTextBuffer |
getTextBuffer() Gets the text buffer to which this locator is bound. |
int |
getWordEnd(int offset) Gets the offset of the word end at or after an offset. |
int |
getWordStart(int offset) Gets the offset of the word start at or before an offset. |
protected boolean |
isIdentifierCharacter(int c, boolean caseChange) Gets whether a character is an identifier character. |
protected boolean |
isSpaceCharacter(int c) Gets whether a character is a space character. |
protected boolean |
isWordEnd(int offset, boolean caseChange, boolean spaceChange, boolean lineStart, boolean lineEnd) Gets whether an offset is at the end of a word. |
protected boolean |
isWordStart(int offset, boolean caseChange, boolean spaceChange, boolean lineStart, boolean lineEnd) Gets whether an offset is the start of a word. |
protected static boolean |
useCaseChangeForWordBoundary() Gets whether change of case should be considered a word boundary. |
protected static boolean |
useLineEndForWordBoundary() Gets whether line end should be considered a word boundary. |
protected static boolean |
useLineStartForWordBoundary() Gets whether line start should be considered a word boundary. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public DefaultWordLocator(LanguageSupport support)
support
- the language support and document this locator is used forMethod Detail |
---|
public int getWordStart(int offset)
getWordStart
in interface WordLocator
offset
- the specified document offsetpublic int getPreviousWordStart(int offset)
getPreviousWordStart
in interface WordLocator
offset
- the specified document offsetpublic int getNextWordStart(int offset)
getNextWordStart
in interface WordLocator
offset
- the specified document offsetpublic int getWordEnd(int offset)
getWordEnd
in interface WordLocator
offset
- the specified document offsetpublic int getPreviousWordEnd(int offset)
getPreviousWordEnd
in interface WordLocator
offset
- the specified document offsetpublic int getNextWordEnd(int offset)
getNextWordEnd
in interface WordLocator
offset
- the specified document offsetprotected final ReadTextBuffer getTextBuffer()
protected boolean isSpaceCharacter(int c)
DefaultWordLocator
implementation uses Character.isWhitespace(char)
.protected boolean isIdentifierCharacter(int c, boolean caseChange)
DefaultWordLocator
implementation uses Character.isJavaIdentifierPart(char)
except that an underscore is not considered an identifier if caseChange
is true.caseChange
- recognize a word start at change of case.protected boolean isWordStart(int offset, boolean caseChange, boolean spaceChange, boolean lineStart, boolean lineEnd)
DefaultWordLocator
never invokes this method with those offsets).offset
- the offset of the character to test.caseChange
- recognize a word start at change of case.spaceChange
- recognize a word start at start of run of spaces.lineStart
- recognize a word start at line start.lineEnd
- recognize a word start at line end.protected boolean isWordEnd(int offset, boolean caseChange, boolean spaceChange, boolean lineStart, boolean lineEnd)
DefaultWordLocator
never invokes this method with those offsets).offset
- the offset of the character to test.caseChange
- recognize a word end at change of case.spaceChange
- recognize a word end at end of run of spaces.lineStart
- recognize a word end at line start.lineEnd
- recognize a word end at line end.protected static boolean useCaseChangeForWordBoundary()
protected static boolean useLineStartForWordBoundary()
protected static boolean useLineEndForWordBoundary()
|
Oracle Fusion Middleware Java API Reference for Oracle Extension SDK Reference 11g Release 1 (11.1.1.7.2) E13403-10 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |