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Because void arrays are illegal (and nonsensical), now there is a new
Xlint warning whenever World.resolve resolves a new 'void[]'. Because
in the World class we do not have any source context, no path + line
number are logged. The user only sees something like:
[warning] arrays cannot have a void type, but found 'void[]' in
pointcut [Xlint:arrayCannotBeVoid]
Then later, if due to the returned MissingResolvedTypeWithKnownSignature
type a joinpoint does not match, there is an additional
my/path/MyAspect.aj:42 [warning] advice defined in MyAspect has not
been applied [Xlint:adviceDidNotMatch]
log line, but not necessarily anywhere near the former one.
On the one hand, this is better than nothing. OTOH, comparing the
situation with no logging message other than Xlint:adviceDidNotMatch in
case of something equally illegal like 'Foo<int>' (primitive generic
type parameter), this is actually more than we have in several other
situations and might even be regarded as superfluous. In case of
multiple 'void[]' cases within a big number of aspects, the same aspect
or even the same pointcut, the user would have no clue where exactly to
search for it. He would just see multiple log messages without source
context.
One option would be to set 'arrayCannotBeVoid=ignore' in
XlintDefault.properties, so the user would have to explicitly activate
it. But IMO, this message should be visible by default.
Another option would be to find out how to defer logging the messages
until later similarly to BcelWeaver.warnOnUnmatchedAdvice and then to
bulk-print them. But in order to achieve that, the information about the
existence of any 'void[]' occurrences would have to be stored in a flag
similar to BcelAdvice.hasMatchedAtLeastOnce, bloating BcelAdvice for
that rare case. Alternatively, each advice pointcut could be
heuristically scanned for the literal substring 'void[]', logging the
Xlint message if it is found anywhere.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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Closes #221
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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Replace them by a uniform method 'isVMGreaterOrEqual(double)', also
overloaded for int.
This gets rid of one 'AspectJ_JDK_Update' tag. One less place to check
and update with each newly supported Java version. :-)
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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After WildTypePattern.hashCode was fixed in the previous commit,
PointcutRewriterTest started failing, because in many places it was
falsely relying on a specific order of hash codes, which cannot be
guaranteed, especially since more instance fields are part of the hash
code now in accordance with 'equals'.
The new test helper class LogicalPointcutStructure is able to recognise
chained '&&' and '||' pointcuts of the same logical nesting level,
un-nesting them from the actual pointcut structure and making them
comparable, disregarding their order. I.e., something like
((A && B) && C) && D
is actually recognised to logically be
A && B && C && D
and equivalent to e.g. either of
D && B && A && C
A && B && D && C
C && A && D && B
This helps to compare rewritten pointcuts, as long as their logical
structure has not been altered.
Relates to #24.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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Trim trailing whitespaces.
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Trailing whitespaces are useless. Most of code-styles forbids them. Most of editors always trim them on save.
I propose to clean up project from trailing whitespaces in all java files at once.
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StringBuffer is a legacy synchronized class. StringBuilder is a direct replacement to StringBuffer which generally have better performance.
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This was required by the Eclipse team as one precondition for the next
release.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
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Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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Reports Collection.addAll() and Map.putAll() calls after instantiation of a collection using a constructor call without arguments. Such constructs can be replaced with a single call to a parametrized constructor which simplifies code. Also for some collections the replacement might be more performant.
Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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There are two styles to convert a collection to an array: either using a pre-sized array (like c.toArray(new String[c.size()])) or using an empty array (like c.toArray(new String[0]).
In older Java versions using pre-sized array was recommended, as the reflection call which is necessary to create an array of proper size was quite slow. However since late updates of OpenJDK 6 this call was intrinsified, making the performance of the empty array version the same and sometimes even better, compared to the pre-sized version. Also passing pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the size and toArray call which may result in extra nulls at the end of the array, if the collection was concurrently shrunk during the operation.
Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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Reports explicit boxing, i.e. wrapping of primitive values in objects. Explicit manual boxing is unnecessary under Java 5 and newer, and can be safely removed.
Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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Reports any String.indexOf() expressions which can be replaced with a call to the String.contains() method available in Java 5 and newer.
Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
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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>
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