Revision history for Scope-Upper
+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.
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