StringBuffer is a legacy synchronized class. StringBuilder is a direct replacement to StringBuffer which generally have better performance.

This was required by the Eclipse team as one precondition for the next
release.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

This involves replacing references in weaver application code as well as
a few tests.

In order to make AspectJ weaver + tools contain a relocated ASM version,
I added a Maven Shade relocation step after Maven Assembly created the
uber JARs. Relocation works for both binaries and sources and also
encompasses Class::forName calls like in class AsmDetector.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

Reports calls to Collections.sort(list, comparator) which could be replaced with list.sort(comparator).

Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>

Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>

Reports for loops which iterate over collections or arrays, and can be replaced with an enhanced for loop (i.e. the foreach iteration syntax).

Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>

Move initialization of static final serialVersionUID field to clinit, since as of java9+, the runtime won't allow setting final fields outside clinit

Signed-off-by: Eli Finkel <eyfinkel@gmail.com>

More testcases for overweaving and better handling of WeaverStateInfo
to avoid the dreaded problems deserialized the 'special key' used
to store diffs.

With these changes once a class is woven via overweaving we switch
the diff we store in the weaverstateinfo to 0 byte array (indicating
overweaving happened for later weavers that see it). We also stop
writing the special 'key' into the attribute and avoid looking-for
and attempting to replace it at the end of weaving.

This commit introduces some new methods into the
runtime Factory class and modifies code generation
to use them (and to use the form of the LDC bytecode
that loads class constants).