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java.lang.Objectfr.umlv.tatoo.runtime.buffer.impl.AbstractLexerBuffer
fr.umlv.tatoo.runtime.buffer.impl.InputStreamWrapper
public class InputStreamWrapper
A ReadWrapper wraps a Reader in order to allow
a lexer to process it and a developper to extract tokens recognized.
Lexer| Constructor Summary | |
|---|---|
InputStreamWrapper(InputStream inputStream,
LocationTracker tracker)
Constructs an InputStreamWrapper wrapper used by the lexer to process the InputStream. |
|
InputStreamWrapper(int capacity,
int increment,
int chunkSize,
InputStream inputStream,
LocationTracker tracker)
Construct a InputStreamWrapper used by the lexer to process the InputStream. |
|
| Method Summary | |
|---|---|
protected void |
discardImpl()
|
boolean |
hasRemaining()
Returns true if more characters are availables in the buffer. |
int |
lastChar()
Returns last read char or -1 if not available. |
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()
|
String |
toString()
Returns a String representation of the current token using the platform default encoding. |
String |
toString(String encoding)
Returns a String representation of the current token using the specified encoding. |
protected void |
unwindImpl(int l)
Performs unwind operation on buffer without taking care of locations |
InputStream |
view()
Returns the token part of the buffer as a InputStream. |
| 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, wait, wait, wait |
| Methods inherited from interface fr.umlv.tatoo.runtime.buffer.TokenBuffer |
|---|
discard |
| Constructor Detail |
|---|
public InputStreamWrapper(InputStream inputStream,
LocationTracker tracker)
InputStreamWrapper wrapper used by the lexer to process the InputStream.
inputStream - the InputStream to wraptracker - the location tracker
public InputStreamWrapper(int capacity,
int increment,
int chunkSize,
InputStream inputStream,
LocationTracker tracker)
InputStreamWrapper used by the lexer to process the InputStream.
The parameters specify how the underlying buffer which stores data in allocated and reallocated
when more space is needed.
capacity - the initial capacityincrement - how much to increment the size of the buffer when more space is requiredchunkSize - how many bytes are read at once is the inputinputStream - the inputtracker - the location tracker| Method Detail |
|---|
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
true if the last unwinded character was an end of line;
false otherwisepublic boolean hasRemaining()
LexerBuffer
public boolean read()
throws IOException
LexerBufferSimpleLexer.run().
read in interface LexerBufferfalse at end of stream
IOException - if an i/o operation failed.protected int nextImpl()
AbstractLexerBuffer
nextImpl in class AbstractLexerBufferLexerBuffer.next()protected void discardImpl()
discardImpl in class AbstractLexerBufferpublic String toString()
CharsetDecoder
at each call.
toString in class ObjectCharset.defaultCharset()public String toString(String encoding)
CharsetDecoder
at each call.
encoding - the character encoding
IllegalCharsetNameException - if the encoding is not supportedCharsetprotected void restartImpl()
restartImpl in class AbstractLexerBufferpublic InputStream view()
public int lastChar()
LexerBuffer
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