org.gjt.sp.jedit.syntax
Class KeywordMap
java.lang.Object
|
+--org.gjt.sp.jedit.syntax.KeywordMap
- public class KeywordMap
- extends java.lang.Object
A KeywordMap
is similar to a hashtable in that it maps keys
to values. However, the `keys' are Swing segments. This allows lookups of
text substrings without the overhead of creating a new string object.
This class is used by CTokenMarker
to map keywords to ids.
Constructor Summary |
KeywordMap(boolean ignoreCase)
Creates a new KeywordMap . |
KeywordMap(boolean ignoreCase,
int mapLength)
Creates a new KeywordMap . |
Method Summary |
void |
add(java.lang.String keyword,
byte id)
Adds a key-value mapping. |
boolean |
getIgnoreCase()
Returns true if the keyword map is set to be case insensitive,
false otherwise. |
protected int |
getSegmentMapKey(javax.swing.text.Segment s,
int off,
int len)
|
protected int |
getStringMapKey(java.lang.String s)
|
byte |
lookup(javax.swing.text.Segment text,
int offset,
int length)
Looks up a key. |
void |
setIgnoreCase(boolean ignoreCase)
Sets if the keyword map should be case insensitive. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
mapLength
protected int mapLength
KeywordMap
public KeywordMap(boolean ignoreCase)
- Creates a new
KeywordMap
.
- Parameters:
ignoreCase
- True if keys are case insensitive
KeywordMap
public KeywordMap(boolean ignoreCase,
int mapLength)
- Creates a new
KeywordMap
.
- Parameters:
ignoreCase
- True if the keys are case insensitivemapLength
- The number of `buckets' to create.
A value of 52 will give good performance for most maps.
lookup
public byte lookup(javax.swing.text.Segment text,
int offset,
int length)
- Looks up a key.
- Parameters:
text
- The text segmentoffset
- The offset of the substring within the text segmentlength
- The length of the substring
add
public void add(java.lang.String keyword,
byte id)
- Adds a key-value mapping.
- Parameters:
keyword
- The key
getIgnoreCase
public boolean getIgnoreCase()
- Returns true if the keyword map is set to be case insensitive,
false otherwise.
setIgnoreCase
public void setIgnoreCase(boolean ignoreCase)
- Sets if the keyword map should be case insensitive.
- Parameters:
ignoreCase
- True if the keyword map should be case
insensitive, false otherwise
getStringMapKey
protected int getStringMapKey(java.lang.String s)
getSegmentMapKey
protected int getSegmentMapKey(javax.swing.text.Segment s,
int off,
int len)