com.dynatrace.openkit.util.json.lexer

Class JSONLexer

java.lang.Object

com.dynatrace.openkit.util.json.lexer.JSONLexer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class JSONLexer
extends java.lang.Object
implements java.io.Closeable

Lexical analyzer for JSON, based on RFC 8259 (see also https://tools.ietf.org/html/rfc8259).

Unlike traditional lexers, which are normally generated, this one is implemented by hand. A normal implementation would rely on a DFA, this one encapsulates substates in subroutines.

Constructor Summary

Constructors

Constructor and Description
JSONLexer(java.io.Reader input) Constructor taking a Reader from where to read the JSON data.
JSONLexer(java.lang.String input) Constructor taking the JSON string.

Method Summary

Modifier and Type	Method and Description
void	close()
JSONToken	nextToken() Get the next token, or null if no next token is available.

Methods inherited from class java.lang.Object

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

Constructor Detail

JSONLexer

public JSONLexer(java.lang.String input)

Constructor taking the JSON string.

Parameters:

input - JSON string for lexical analysis.

JSONLexer

public JSONLexer(java.io.Reader input)

Constructor taking a Reader from where to read the JSON data.

Parameters:

input - A Reader instance from where to read the JSON data.

Method Detail

nextToken

public JSONToken nextToken()
                    throws LexerException

Get the next token, or null if no next token is available.

Returns:

The next JSONToken or null if there is no next token.

Throws:

LexerException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException