Revision history for Scope-Upper
0.22 2013-01-30 23:35 UTC
+ Chg : perl 5.6.1 is required.
+ Fix : context_info() now ignores %warnings::Bits for perl 5.8.6 and
below, just like caller().
+ Fix : [RT #82220] : Scope-Upper-0.21 test stuck on Windows perl 5.12.3
t/93-pod-spelling.t will not crash anymore on perl 5.12 and
below.
Thanks Gabor Szabo for reporting and Slaven Rezic for debugging
this issue.
+ Tst : Rare test failures of t/07-context_info.t on perl 5.6,
t/55-yield-target.t on perl 5.[68], and t/63-uplevel-ctl.t on
perl 5.8.[345] have been addressed.
0.21 2012-09-21 15:10 UTC
+ Fix : context_info() has been taught about perl 5.17.4.
+ Fix : t/07-context_info.t will no longer fail with perls that have
sitecustomize enabled (like many perl builds for Windows).
Thanks Steve Hay and Nicholas Clark for debugging help.
+ Fix : Broken linkage on Windows with gcc 3.4, which appears in
particular when using ActivePerl's default compiler suite.
For those setups, the Scope::Upper shared library will now be
linked against the perl dll directly (instead of the import
library).
0.20 2012-09-17 11:00 UTC
+ Add : The new yield(@values, $context) function can be used to return
values to any upper scope, including do or map blocks.
The new leave(@values) function is an alias for
yield(@values, HERE).
+ Add : The new context_info($context) function return information
about context $context, similarly to what caller() provides
but for any upper scope.
+ Chg : Contexts are now normalized. In previous versions, it was
possible for different contexts to refer to the same scope :
for example, "for (my $i = 0; $i < 10; ++$i) { ... }" was
reachable through two contexts, while "for (@array) { ... }"
only by one. Starting from this version, contexts are
normalized so that they always represent an actual scope.
+ Doc : C++ compilers are officially NOT supported.
+ Fix : Building with a more recent version of perl 5.17.4.
+ Fix : Debugger compatibility with perl 5.17.1 and above.
0.19 2012-09-01 13:25 UTC
+ Doc : POD headings have been made linkable.
+ Fix : Building with perl 5.17.4.
+ Fix : BUILD_PREREQS are now set for ExtUtils::MakeMaker.
+ Opt : uplevel() private data structure is 7% smaller on 64 bits
architectures.
+ Tst : Author tests overhaul.
0.18 2011-10-10 20:50 UTC
+ Add : The uid() function returns an unique identifier for each dynamic
scope. The validate_uid() function can be used to check whether
one such identifier is valid (i.e. that the scope it refers to
is still alive).
+ Chg : It is no longer possible on perl 5.6 to call goto() in an
uplevel callback to replace the uplevel call. This change was
needed in order to ensure consistency between platforms
regarding to the following fix just below.
+ Fix : The uplevel() tests now pass on Windows.
Thanks C.H. Kang for bringing this to my attention.
0.17 2011-10-03 21:45 UTC
+ Fix : uplevel() will now use the correct pad when executing its
callback. This fixes at least two issues :
- closures defined inside the uplevel callback can now correctly
access lexicals from inside and outside the callback.
- state variables in the uplevel callback now work properly.
+ Fix : It is now generally possible to call goto() in the uplevel'd
code to replace the uplevel stack frame. There are two cases
for which it is still not possible :
- if -D flags were set when running perl (as in "perl -Dt ...").
- if the perl runloop has been replaced with a custom one by
another module.
If uplevel() detects that the replacement code contains a goto
statement, and is in one of those two cases, then it will refuse
to execute the callback and throw an exception.
Note that this fix implies a run-time overhead of uplevel()
proportional to the size of the the callback in every case
(with a small ratio), and proportional to the size of ALL the
code executed as the result of the uplevel call (including
subroutine calls inside the callback) when a goto statement is
found in the uplevel callback.
+ Fix : uplevel() has been taught how to handle XS callbacks properly.
+ Fix : The cause of "Attempt to free unreferenced scalar" warnings
when using uplevel() has been addressed.
+ Fix : [RT #71212] : build failure on Windows.
The module does no longer rely on calling Perl_cv_clone, which
isn't exported.
Thanks C.H. Kang for reporting.
0.16 2011-09-03 23:00 UTC
+ Add : uplevel($code, @args, $cxt) executes $code with arguments @args
in the upper context pointed by $cxt.
This is an XS version of the well-known uplevel() routine from
Sub::Uplevel. There are a few differences between both
implmentations that are listed in the documentation.
The XS version is roughly 10 times faster than the pure-Perl
version.
0.15 2011-08-24 14:20 UTC
+ Fix : Localizing subroutines in an higher scope will now correctly
update the method cache.
0.14 2011-02-27 00:00 UTC
+ Fix : [RT #64997] : Compatibility with perl 5.13.10.
Thanks Dave Mitchell for the notice.
+ Tst : Lengthy tests have been ported to Test::Leaner, making the
whole test suite about 50% faster.
0.13 2010-12-20 01:00 UTC
+ Fix : [RT #61904] : Stack corruption when using unwind() under
Devel::NYTProf.
Thanks Sergey Aleynikov for contributing a fix.
+ Fix : [RT #63378] : Compatibility with perl 5.13.8.
Thanks Andreas J. König for bisecting the issue.
+ Tst : Threads tests are now only run on perl 5.13.4 and higher.
They could segfault randomly because of what seems to be an
internal bug of Perl, which has been addressed in 5.13.4.
There is also an environment variable that allows you to
forcefully run those tests, but it should be set only for
author testing and not for end users.
0.12 2010-05-19 00:45 UTC
+ Fix : Compatibility with perl 5.13.
+ Fix : Test failures with perl 5.8.0.
+ Fix : A minor leak of SVs when a non array/hash was passed to
localize_elem().
0.11 2010-04-16 23:20 UTC
+ Chg : It's now forbiddent to pass a reference to a non-glob variable
as the localization target of localize(), localize_elem() and
localize_delete().
+ Chg : localize_elem() now only accepts localization of arrays or hashs
elements. For other types, it used to be a synonym of localize.
+ Chg : localize_elem() no longer accepts a glob as the target. You now
have to specify the variable as a string. This is because it was
impossible in this case to handle meaningfully the array or the
hash reference passed as the assigned value.
+ Doc : The synopsys was revamped, and the rest of the documentation was
reviewed.
+ Fix : [RT #55593] : Segfault when localizing hash or array element to
different package in different file.
Thanks Dagfinn Ilmari Mannsåker for reporting.
+ Fix : [RT #56301] : reap loses eval context when dying naturally.
Thanks Andrew Main for reporting.
+ Fix : Scope inconsistencies and segfaults when saving several
localizations into the same target scope.
+ Fix : Stop skipping frames as a pop optimization. This caused breakage
under the debugger (and most likely outside as well).
0.10 2010-01-18 23:50 UTC
+ Fix : Properly handle given/when on 5.10.
+ Fix : Some stack inconsistencies were fixed, though they were unlikely
to have an impact on your real-life code.
+ Fix : Work around Kwalitee test misfailures.
0.09 2009-05-17 20:20 UTC
+ Add : The new SU_THREADSAFE constant can be used to know whether the
module could have been built with thread safety enabled.
+ Chg : Thread safety is disabled for perl 5.8 on Win32.
+ Chg : A saner workaround for the "call_sv() during LEAVE clobbers the
still used last popped stack element" issue on 5.10.
0.08 2009-04-16 22:50 UTC
+ Fix : [RT #44204] : Stack corruption with reap(). Thanks Torsten
Foertsch for reporting.
+ Fix : Building with Solaris CC.
+ Tst : unwind() in threads.
0.07 2009-02-20 00:20 UTC
+ Chg : The CLONE method will no longer be defined for non-threaded
perls.
+ Doc : Some examples on how to build the target context from the words.
+ Fix : Some unlikely possible uninitialized reads, indirectly pointed
out in a Redhat review request.
+ Fix : "localize *x, 'y' => $cxt" now matches Perl's behaviour for
"local *x = 'y'".
+ Fix : Miscellanous code cleanups, courtesy of Florian Ragwitz.
+ Upd : Resources in META.yml.
0.06 2009-01-17 00:05 UTC
+ Chg : INCOMPATIBLE CHANGE: The level is now absolute and no longer
relative to the current frame - we'll call it "context" from now
on. You should replace all your raw levels by combinations of
words.
The old behaviour of "=> $n" can be easily reobtained by using
"=> SCOPE($n)".
+ Fix : As a result of this change, the module now plays nicely with
the debugger.
0.05 2009-01-12 18:15 UTC
+ Fix : Stack mess when using unwind() in scalar context.
+ Fix : Returning an automatic variable isn't wise, so let's use a
context instead.
+ Doc : Clarifications.
+ Tst : Stress tests for unwind().
0.04 2009-01-11 18:40 UTC
+ Add : unwind(@things, $level), that returns to an upper context.
+ Add : want_at($level), that gives the wantarray for $level.
+ Add : Control words, to reliably get the level of the n-th upper
subroutine or eval scope. TOPLEVEL was renamed to TOP.
+ Fix : Tests with 5.6.
+ Tst : Reordering and factoring some of the stress tests so that they
aren't needlessly ran several times.
0.03 2009-01-04 15:55 UTC
+ Add : localize_delete(), that localize array/hash elements in upper
scopes.
+ Fix : Segfault when localizing array elements with an invalid negative
index.
0.02 2008-12-28 18:40 UTC
+ Doc : Clarifications and improvements.
+ Fix : Missing compatibility macros.
+ Fix : Localized nonexistant array elements should be deleted when
their time comes so that the array recovers its original length.
0.01 2008-12-26 16:05 UTC
First version, released on an unsuspecting world.