From: Vincent Pit Date: Sun, 28 Dec 2008 18:40:48 +0000 (+0100) Subject: This is 0.02 X-Git-Tag: v0.02^0 X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2FScope-Upper.git;a=commitdiff_plain;h=5d565c2feed583ba26f5451a0b25f1a5df2be4ed This is 0.02 --- diff --git a/Changes b/Changes index 7cb3a02..e872d83 100644 --- a/Changes +++ b/Changes @@ -1,5 +1,11 @@ Revision history for Scope-Upper +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. diff --git a/META.yml b/META.yml index c56dad6..12989c5 100644 --- a/META.yml +++ b/META.yml @@ -1,6 +1,6 @@ --- #YAML:1.0 name: Scope-Upper -version: 0.01 +version: 0.02 abstract: Act on upper scopes. author: - Vincent Pit @@ -9,6 +9,7 @@ distribution_type: module configure_requires: ExtUtils::MakeMaker: 0 requires: + Exporter: 0 XSLoader: 0 no_index: directory: diff --git a/README b/README index 52a7611..5e2fb7e 100644 --- a/README +++ b/README @@ -2,7 +2,7 @@ NAME Scope::Upper - Act on upper scopes. VERSION - Version 0.01 + Version 0.02 SYNOPSIS package X; @@ -60,16 +60,19 @@ FUNCTIONS to 1. * A string beginning with a sigil, representing the symbol to localize - and assign to. If the sigil is '$', then $value isn't dereferenced, - that is + and to assign to. If the sigil is '$', "localize" follows the same + syntax as "local $x = $value", i.e. $value isn't dereferenced. For + example, localize '$x', \'foo' => 0; - will set $x to a reference to the string 'foo'. Other sigils behave - as if a glob was passed. + will set $x to a reference to the string 'foo'. Other sigils ('@', + '%', '&' and '*') require $value to be a reference of the + corresponding type. - The symbol is resolved when the actual localization takes place and - not when "localize" is called. This means that + When the symbol is given by a string, it is resolved when the actual + localization takes place and not when "localize" is called. This + means that sub tag { localize '$x', $_[0] => 1; } @@ -89,6 +92,33 @@ EXPORT only exported on request, either individually or by the tags ':funcs' and ':all'. +CAVEATS + Be careful that local variables are restored in the reverse order in + which they were localized. Consider those examples: + + local $x = 0; + { + reap sub { print $x } => 0; + local $x = 1; + ... + } + # prints '0' + ... + { + local $x = 1; + reap sub { $x = 2 } => 0; + ... + } + # $x is 0 + + The first case is "solved" by moving the "local" before the "reap", and + the second by using "localize" instead of "reap". + + "reap", "localize" and "localize_elem" effects can't cross "BEGIN" + blocks, hence calling those functions in "import" is deemed to be + useless. This is an hopeless case because "BEGIN" blocks are executed + once while localizing constructs should do their job at each run. + DEPENDENCIES XSLoader (standard since perl 5.006). @@ -112,6 +142,9 @@ SUPPORT perldoc Scope::Upper + Tests code coverage report is available at + . + ACKNOWLEDGEMENTS Inspired by Ricardo Signes. diff --git a/lib/Scope/Upper.pm b/lib/Scope/Upper.pm index ae9683d..f4e276d 100644 --- a/lib/Scope/Upper.pm +++ b/lib/Scope/Upper.pm @@ -9,13 +9,13 @@ Scope::Upper - Act on upper scopes. =head1 VERSION -Version 0.01 +Version 0.02 =cut our $VERSION; BEGIN { - $VERSION = '0.01'; + $VERSION = '0.02'; } =head1 SYNOPSIS