io.continual.onap.services.mrCommon

Class SimplifiedJsonTokener

java.lang.Object

io.continual.onap.services.mrCommon.SimplifiedJsonTokener

public class SimplifiedJsonTokener
extends Object

A JSONTokener takes a source string and extracts characters and tokens from it. It is used by the JSONObject and JSONArray constructors to parse JSON source strings.

Version:

2012-02-16

Author:

JSON.org

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	SimplifiedJsonTokener.SimplifiedJsonException The JSONException is thrown by the JSON.org classes when things are amiss.

Constructor Summary

Constructors

Constructor and Description
SimplifiedJsonTokener(InputStream inputStream) Construct a JSONTokener from an InputStream.
SimplifiedJsonTokener(Reader reader) Construct a JSONTokener from a Reader.
SimplifiedJsonTokener(String s) Construct a JSONTokener from a string.

Method Summary

Modifier and Type	Method and Description
void	back() Back up one character.
static int	dehexchar(char c) Get the hex value of a character (base16).
boolean	end()
boolean	more() Determine if the source string still contains characters that next() can consume.
char	next() Get the next character in the source string.
char	next(char c) Consume the next character, and check that it matches a specified character.
String	next(int n) Get the next n characters.
char	nextClean() Get the next char in the string, skipping whitespace.
String	nextString(char quote) Return the characters up to the next close quote character.
String	nextTo(char delimiter) Get the text up but not including the specified character or the end of line, whichever comes first.
String	nextTo(String delimiters) Get the text up but not including one of the specified delimiter characters or the end of line, whichever comes first.
String	nextValue() Get the next value.
char	skipTo(char to) Skip characters until the next character is the requested character.
SimplifiedJsonTokener.SimplifiedJsonException	syntaxError(String message) Make a JSONException to signal a syntax error.
String	toString() Make a printable string of this JSONTokener.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimplifiedJsonTokener

public SimplifiedJsonTokener(Reader reader)

Construct a JSONTokener from a Reader.

Parameters:

reader - A reader.

SimplifiedJsonTokener

public SimplifiedJsonTokener(InputStream inputStream)
                      throws SimplifiedJsonTokener.SimplifiedJsonException

Construct a JSONTokener from an InputStream.

Parameters:

inputStream - the input stream to tokenize

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

SimplifiedJsonTokener

public SimplifiedJsonTokener(String s)

Construct a JSONTokener from a string.

Parameters:

s - A source string.

Method Detail

back

public void back()
          throws SimplifiedJsonTokener.SimplifiedJsonException

Back up one character. This provides a sort of lookahead capability, so that you can test for a digit or letter before attempting to parse the next number or identifier.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on attempt to step back twice

dehexchar

public static int dehexchar(char c)

Get the hex value of a character (base16).

Parameters:

c - A character between '0' and '9' or between 'A' and 'F' or between 'a' and 'f'.

Returns:

An int between 0 and 15, or -1 if c was not a hex digit.

end

public boolean end()

more

public boolean more()
             throws SimplifiedJsonTokener.SimplifiedJsonException

Determine if the source string still contains characters that next() can consume.

Returns:

true if not yet at the end of the source.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

next

public char next()
          throws SimplifiedJsonTokener.SimplifiedJsonException

Get the next character in the source string.

Returns:

The next character, or 0 if past the end of the source string.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO exception

next

public char next(char c)
          throws SimplifiedJsonTokener.SimplifiedJsonException

Consume the next character, and check that it matches a specified character.

Parameters:

c - The character to match.

Returns:

The character.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - if the character does not match.

next

public String next(int n)
            throws SimplifiedJsonTokener.SimplifiedJsonException

Get the next n characters.

Parameters:

n - The number of characters to take.

Returns:

A string of n characters.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - Substring bounds error if there are not n characters remaining in the source string.

nextClean

public char nextClean()
               throws SimplifiedJsonTokener.SimplifiedJsonException

Get the next char in the string, skipping whitespace.

Returns:

A character, or 0 if there are no more characters.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

nextString

public String nextString(char quote)
                  throws SimplifiedJsonTokener.SimplifiedJsonException

Return the characters up to the next close quote character. Backslash processing is done. The formal JSON format does not allow strings in single quotes, but an implementation is allowed to accept them.

Parameters:

quote - The quoting character, either " (double quote) or ' (single quote).

Returns:

A String.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - Unterminated string.

nextTo

public String nextTo(char delimiter)
              throws SimplifiedJsonTokener.SimplifiedJsonException

Get the text up but not including the specified character or the end of line, whichever comes first.

Parameters:

delimiter - A delimiter character.

Returns:

A string.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

nextTo

public String nextTo(String delimiters)
              throws SimplifiedJsonTokener.SimplifiedJsonException

Get the text up but not including one of the specified delimiter characters or the end of line, whichever comes first.

Parameters:

delimiters - A set of delimiter characters.

Returns:

A string, trimmed.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

nextValue

public String nextValue()
                 throws SimplifiedJsonTokener.SimplifiedJsonException

Get the next value. The value can be a Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the JSONObject.NULL object.

Returns:

An object.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - If syntax error.

skipTo

public char skipTo(char to)
            throws SimplifiedJsonTokener.SimplifiedJsonException

Skip characters until the next character is the requested character. If the requested character is not found, no characters are skipped.

Parameters:

to - A character to skip to.

Returns:

The requested character, or zero if the requested character is not found.

Throws:

SimplifiedJsonTokener.SimplifiedJsonException - on IO error

syntaxError

public SimplifiedJsonTokener.SimplifiedJsonException syntaxError(String message)

Make a JSONException to signal a syntax error.

Parameters:

message - The error message.

Returns:

A JSONException object, suitable for throwing

toString

public String toString()

Make a printable string of this JSONTokener.

Overrides:

toString in class Object

Returns:

" at {index} [character {character} line {line}]"