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 package divconq.json3.io;
 
 
Abstract base class that defines interface for customizing character escaping aspects for String values, for formats that use escaping. For JSON this applies to both property names and String values.
public abstract class CharacterEscapes
    implements java.io.Serializable // since 2.1
{
    
Value used for lookup tables to indicate that matching characters do not need to be escaped.
    public final static int ESCAPE_NONE = 0;

    
Value used for lookup tables to indicate that matching characters are to be escaped using standard escaping; for JSON this means (for example) using "backslash - u" escape method.
    public final static int ESCAPE_STANDARD = -1;

    
Value used for lookup tables to indicate that matching characters will need custom escapes; and that another call to getEscapeSequence(int) is needed to figure out exact escape sequence to output.
    public final static int ESCAPE_CUSTOM = -2;
    
    /*
     * Method generators can call to get lookup table for determining
     * escape handling for first 128 characters of Unicode (ASCII
     * characters. Caller is not to modify contents of this array, since
     * this is expected to be a shared copy.
     * 
     * @return Array with size of at least 128, where first 128 entries
     *    have either one of <code>ESCAPE_xxx</code> constants, or non-zero positive
     *    integer (meaning of which is data format specific; for JSON it means
     *    that combination of backslash and character with that value is to be used)
     *    to indicate that specific escape sequence is to be used.
     */
    public abstract int[] getEscapeCodesForAscii();
    /*
     * Method generators can call to get lookup table for determining
     * exact escape sequence to use for given character.
     * It can be called for any character, but typically is called for
     * either for ASCII characters for which custom escape
     * sequence is needed; or for any non-ASCII character.
     */
    public abstract SerializableString getEscapeSequence(int ch);
    /*
     * Helper method that can be used to get a copy of standard JSON
     * escape definitions; this is useful when just wanting to slightly
     * customize definitions. Caller can modify this array as it sees
     * fit and usually returns modified instance via {@link #getEscapeCodesForAscii}
     */
    public static int[] standardAsciiEscapesForJSON()
    {
        int[] esc = CharTypes.get7BitOutputEscapes();
        return Arrays.copyOf(escesc.length);
    }
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