Package org.codehaus.janino

Class UnicodeUnescapeReader

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable
    public class UnicodeUnescapeReader
extends java.io.FilterReader
    A FilterReader that unescapes the "Unicode Escapes" as described in JLS7 3.10.6.

    Notice that it is possible to formulate invalid escape sequences, e.g. "\u123g" ("g" is not a valid hex character). This is handled by throwing a RuntimeException-derived UnicodeUnescapeException.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private boolean oddPrecedingBackslashes  
      private int unreadChar  

      • Fields inherited from class java.io.FilterReader

        in

      • Fields inherited from class java.io.Reader

        lock

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static void main​(java.lang.String[] args)
      Simple unit testing.
      int read()
      Overrides FilterReader.read().
      int read​(char[] cbuf, int off, int len)
      Overrides FilterReader.read(char[], int, int).

      • Methods inherited from class java.io.FilterReader

        close, mark, markSupported, ready, reset, skip

      • Methods inherited from class java.io.Reader

        nullReader, read, read, transferTo

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • unreadChar

        private int unreadChar

      • oddPrecedingBackslashes

        private boolean oddPrecedingBackslashes

    • Constructor Detail

      • UnicodeUnescapeReader

        public UnicodeUnescapeReader​(java.io.Reader in)

    • Method Detail

      • read

        public int read()
         throws java.io.IOException
        Overrides FilterReader.read().
        Overrides:
        read in class java.io.FilterReader
        Throws:
        UnicodeUnescapeException - Invalid escape sequence encountered
        java.io.IOException

      • read

        public int read​(@Nullable
                char[] cbuf,
                int off,
                int len)
         throws java.io.IOException
        Overrides FilterReader.read(char[], int, int).
        Overrides:
        read in class java.io.FilterReader
        Throws:
        java.io.IOException

      • main

        public static void main​(java.lang.String[] args)
                 throws java.io.IOException
        Simple unit testing.
        Throws:
        java.io.IOException