org.waterken.syntax.json
Class JSONLexer

java.lang.Object
  org.waterken.syntax.json.JSONLexer

public final class JSONLexer
extends java.lang.Object

A JSON token reader.

Constructor Summary

JSONLexer(java.io.Reader in)
Constructs an instance.

Method Summary

void	close()
int	getColumn() Gets the column number of the head token.
java.lang.String	getHead() Gets the most recently read token.
int	getLine() Gets the line number of the head token.
java.lang.String	next() Move to the next token in the input stream.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JSONLexer

public JSONLexer(java.io.Reader in)

Constructs an instance.

Parameters:

in - UTF-8 input stream

Method Detail

getLine

public int getLine()

Gets the line number of the head token.

getColumn

public int getColumn()

Gets the column number of the head token.

getHead

public java.lang.String getHead()

Gets the most recently read token.

Returns:

most recent token, or null if EOF

next

public java.lang.String next()
                      throws java.io.EOFException,
                             java.io.IOException,
                             java.lang.Exception

Move to the next token in the input stream.

Returns:

newly read token

Throws:

java.io.EOFException - EOF

java.io.IOException - any I/O error

java.lang.Exception - invalid character escape

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException