README.TXT
1KNOWN ISSUES
2------------
3
4- Unit tests for the beans package may fail in the Harmony self-hosting
5 environment due to the incomplete functionality of stub classes in awt
6 and applet packages. The failing tests are:
7 java.beans.EventHandlerTest
8 java.beans.SimpleBeanInfoTest
9
10- The find() and findBack() methods in regex nodes may work incorrectly with back references.
11The issue may show up for such patterns as below:
12 .*(.)\\1
13 (.)\\1
14
15- The Node.match() method is not completely optimized in regex. It may call the CharSequence.toString() method
16even if CharacterSequence is not a string, which leads to a String creation during each call to
17this node�s match() method.
18
19- Methods implementing bitwise operations (and, or, and xor) in the BigInteger class might seem complicated
20although they work rather efficiently. These methods might be rewritten in a more comprehensive form.
21
22
23TODO
24----
25
26- Implement canonical equivalence support in regex.
27
28- Simplify multistep operations in the BigInteger class, which create
29multiple BigInteger objects on each step. The methods gcd (), isProbablePrime(),
30modInverse(), and modPow()can be speeded up with implementing safe in-place computations.
31
32- Enhance the multistep BigInteger.pow() method. To reduce the number of created
33objects, the method can be implemented by using the square-and-multiply algorithm.
34However, the proposed implementation works longer due to longer multiplication of large numbers.
35The enhancement may consist of implementing safe in-place multiplication
36and possible combination of the two algorithms.
37
38- Implement special cases for more efficient exponentiation of BigInteger.TEN and
39multiplication by using BigInteger.TEN. These mechanisms are widely used in the BigDecimal implementation.
40
41- Optimize the BigInteger.toString() method.
42