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java.lang.Objectfr.umlv.tatoo.runtime.buffer.impl.AbstractLexerBuffer
fr.umlv.tatoo.runtime.buffer.impl.CharSequenceWrapper
public class CharSequenceWrapper
A CharSequenceWrapper wraps a CharSequence in order to allow
a lexer to process its content in order to have its tokens extracted.
Lexer| Constructor Summary | |
|---|---|
CharSequenceWrapper(CharSequence seq,
LocationTracker tracker)
Constructs a CharSequenceWrapper which wraps specified CharSequence. |
|
| Method Summary | |
|---|---|
char |
charAt(int position)
|
protected void |
discardImpl()
|
int |
getPosition()
|
CharSequence |
getSequence()
|
int |
getTokenEnd()
|
int |
getTokenStart()
|
boolean |
hasRemaining()
Returns true if more characters are availables in the buffer. |
int |
lastChar()
Returns last read char or -1 if not available. |
int |
length()
|
protected int |
nextImpl()
Returns next character in buffer without taking care of locations |
boolean |
previousWasNewLine()
Determines if the last unwinded character was an end of line. |
boolean |
read()
Reads at some bytes from the stream. |
protected void |
resetImpl()
Moves current position back to first non unwinded character without taking care of locations |
protected void |
restartImpl()
|
CharSequence |
subSequence(int start,
int end)
|
protected void |
unwindImpl(int l)
Performs unwind operation on buffer without taking care of locations |
CharSequence |
view()
Provides a view of all available tokens. |
| Methods inherited from class fr.umlv.tatoo.runtime.buffer.impl.AbstractLexerBuffer |
|---|
discard, getLocationProvider, locationClear, next, reset, restart, unwind |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Methods inherited from interface fr.umlv.tatoo.runtime.buffer.TokenBuffer |
|---|
discard |
| Methods inherited from interface java.lang.CharSequence |
|---|
toString |
| Constructor Detail |
|---|
public CharSequenceWrapper(CharSequence seq,
LocationTracker tracker)
CharSequenceWrapper which wraps specified CharSequence.
seq - the CharSequence to wraptracker - the location tracker| Method Detail |
|---|
public int getPosition()
public CharSequence getSequence()
public int getTokenStart()
public int getTokenEnd()
protected void unwindImpl(int l)
AbstractLexerBuffer
unwindImpl in class AbstractLexerBufferl - the number of characters to unwindLexerBuffer.unwind(int)protected void resetImpl()
AbstractLexerBuffer
resetImpl in class AbstractLexerBufferLexerBuffer.reset()public boolean previousWasNewLine()
LexerBuffer
previousWasNewLine in interface LexerBuffertrue if the last unwinded character was an end of line;
false otherwisepublic boolean hasRemaining()
LexerBuffer
hasRemaining in interface LexerBufferpublic boolean read()
LexerBufferSimpleLexer.run().
read in interface LexerBufferfalse at end of streamprotected int nextImpl()
AbstractLexerBuffer
nextImpl in class AbstractLexerBufferLexerBuffer.next()protected void discardImpl()
discardImpl in class AbstractLexerBufferpublic CharSequence view()
TokenBuffer
view in interface TokenBuffer<CharSequence>public char charAt(int position)
charAt in interface CharSequencepublic int length()
length in interface CharSequence
public CharSequence subSequence(int start,
int end)
subSequence in interface CharSequencepublic int lastChar()
LexerBuffer
lastChar in interface LexerBufferprotected void restartImpl()
restartImpl in class AbstractLexerBuffer
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