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Java Source Code / Java Documentation » Scripting » Nice » gnu.text 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.io.Reader
      gnu.text.Lexer

Lexer
public class Lexer extends Reader (Code)
Framework for implementing lexical scanners.
author:
   Per Bothner


Field Summary
 SourceMessagesmessages
    
protected  LineBufferedReaderport
    
public  char[]tokenBuffer
     For building tokens of various kinds.
public  inttokenBufferLength
     The number of chars of tokenBuffer that are used.

Constructor Summary
public  Lexer(LineBufferedReader port)
    
public  Lexer(LineBufferedReader port, SourceMessages messages)
    

Method Summary
public  booleancheckErrors(PrintWriter out, int max)
     Returns true if any error were seen.
public  voidclearErrors()
    
public  voidclose()
    
public  voideofError(String msg)
    
public  voiderror(char severity, String filename, int line, int column, String message)
    
public  voiderror(char severity, String message)
    
public  voiderror(String message)
    
public  voidfatal(String message)
    
public  intgetColumnNumber()
    
public  SourceErrorgetErrors()
    
public  intgetLineNumber()
    
public  SourceMessagesgetMessages()
    
public  StringgetName()
    
final public  LineBufferedReadergetPort()
    
public  intpeek()
    
public  intread()
    
public  intread(char[] buf, int offset, int length)
    
public static  longreadDigitsInBuffer(LineBufferedReader port, int radix)
    
public  intreadOptionalExponent()
     Read an optional signed integer.
public  booleanseenErrors()
    
public  voidsetMessages(SourceMessages messages)
    
public  voidskip()
    
protected  voidskip_quick()
    
public  voidtokenBufferAppend(int ch)
     Append one character to tokenBuffer, resizing it if need be.
public  voidunread(int ch)
    
protected  voidunread()
    
protected  voidunread_quick()
    

Field Detail
messages
SourceMessages messages(Code)



port
protected LineBufferedReader port(Code)



tokenBuffer
public char[] tokenBuffer(Code)
For building tokens of various kinds.



tokenBufferLength
public int tokenBufferLength(Code)
The number of chars of tokenBuffer that are used.




Constructor Detail
Lexer
public Lexer(LineBufferedReader port)(Code)



Lexer
public Lexer(LineBufferedReader port, SourceMessages messages)(Code)




Method Detail
checkErrors
public boolean checkErrors(PrintWriter out, int max)(Code)
Returns true if any error were seen. Prints and clears the errors.
Parameters:
  out - where to write the error message to
Parameters:
  max - maximum number of messages to print (can be 0)



clearErrors
public void clearErrors()(Code)



close
public void close() throws java.io.IOException(Code)



eofError
public void eofError(String msg) throws SyntaxException(Code)



error
public void error(char severity, String filename, int line, int column, String message)(Code)



error
public void error(char severity, String message)(Code)



error
public void error(String message)(Code)



fatal
public void fatal(String message) throws SyntaxException(Code)



getColumnNumber
public int getColumnNumber()(Code)



getErrors
public SourceError getErrors()(Code)



getLineNumber
public int getLineNumber()(Code)



getMessages
public SourceMessages getMessages()(Code)



getName
public String getName()(Code)



getPort
final public LineBufferedReader getPort()(Code)



peek
public int peek() throws java.io.IOException(Code)



read
public int read() throws java.io.IOException(Code)



read
public int read(char[] buf, int offset, int length) throws java.io.IOException(Code)



readDigitsInBuffer
public static long readDigitsInBuffer(LineBufferedReader port, int radix)(Code)
Read digits, up to the first non-digit or the buffer limit the digits seen as a non-negative long, or -1 on overflow



readOptionalExponent
public int readOptionalExponent() throws java.io.IOException(Code)
Read an optional signed integer. If there is no integer in the input stream, return 1. For excessively large exponents, return Integer.MIN_VALUE or Integer.MAX_VALUE.



seenErrors
public boolean seenErrors()(Code)



setMessages
public void setMessages(SourceMessages messages)(Code)



skip
public void skip() throws java.io.IOException(Code)



skip_quick
protected void skip_quick() throws java.io.IOException(Code)



tokenBufferAppend
public void tokenBufferAppend(int ch)(Code)
Append one character to tokenBuffer, resizing it if need be.



unread
public void unread(int ch) throws java.io.IOException(Code)



unread
protected void unread() throws java.io.IOException(Code)



unread_quick
protected void unread_quick() throws java.io.IOException(Code)



Fields inherited from java.io.Reader
protected Object lock(Code)(Java Doc)

Methods inherited from java.io.Reader
abstract public void close() throws IOException(Code)(Java Doc)
public void mark(int readAheadLimit) throws IOException(Code)(Java Doc)
public boolean markSupported()(Code)(Java Doc)
public int read(java.nio.CharBuffer target) throws IOException(Code)(Java Doc)
public int read() throws IOException(Code)(Java Doc)
public int read(char cbuf) throws IOException(Code)(Java Doc)
abstract public int read(char cbuf, int off, int len) throws IOException(Code)(Java Doc)
public boolean ready() throws IOException(Code)(Java Doc)
public void reset() throws IOException(Code)(Java Doc)
public long skip(long n) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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