Long-Jump-0.000001/0000755000175000017500000000000013544237671013476 5ustar exodistexodistLong-Jump-0.000001/xt/0000755000175000017500000000000013544237671014131 5ustar exodistexodistLong-Jump-0.000001/xt/author/0000755000175000017500000000000013544237671015433 5ustar exodistexodistLong-Jump-0.000001/xt/author/pod-syntax.t0000644000175000017500000000025213544237671017725 0ustar exodistexodist#!perl # This file was automatically generated by Dist::Zilla::Plugin::PodSyntaxTests. use strict; use warnings; use Test::More; use Test::Pod 1.41; all_pod_files_ok(); Long-Jump-0.000001/lib/0000755000175000017500000000000013544237671014244 5ustar exodistexodistLong-Jump-0.000001/lib/Long/0000755000175000017500000000000013544237671015143 5ustar exodistexodistLong-Jump-0.000001/lib/Long/Jump.pm0000644000175000017500000000744013544237671016421 0ustar exodistexodistpackage Long::Jump; use strict; use warnings; our $VERSION = '0.000001'; use Carp qw/croak/; use Importer Importer => 'import'; our @EXPORT_OK = qw/setjump longjump/; my (%STACK, $SEEK, $OUT); sub setjump { my ($name, $code, @args) = @_; croak "You must name your jump point" unless defined $name; croak "You must provide a subroutine as a second argument" unless $code && ref($code) eq 'CODE'; croak "There is already a jump point named '$name'" if exists $STACK{$name}; local $STACK{$name} = 1; LONG_JUMP_SET: { $code->(@args); return undef; } longjump($SEEK, @$OUT) if $name ne $SEEK; my $out = $OUT; $OUT = undef; return $out; } sub longjump { $SEEK = shift; croak "No such jump point: '$SEEK'" unless $STACK{$SEEK}; $OUT = [@_]; my $ok = eval { no warnings 'exiting'; last LONG_JUMP_SET; 1 }; my $err = $@; my $msg = "longjump('$SEEK') failed"; $msg .= ", error: $err" unless $ok; croak $msg; } 1; __END__ =pod =encoding UTF-8 =head1 NAME Long::Jump - Mechanism for returning to a specific point from a deeply nested stack. =head1 DESCRIPTION This module essentially provides a multi-level return. You can mark a spot with C and then unwind the stack back to that point from any nested stack frame by name using C. You can also provide a list of return values. This is not quite a match for C's long jump, but it is "close enough". It is safer than C's jump in that it only lets you escape frames by going up the stack, you cannot jump in other ways. =head1 SYNOPSIS use Long::Jump qw/setjump longjump/; my $out = setjump foo => sub { bar(); ...; # Will never get here }; is($out, [qw/x y z/], "Got results of the long jump"); $out = setjump foo => sub { print "Not calling longjump"; }; is($out, undef, "longjump was not called so we got an undef response"); sub bar { baz(); return 'bar'; # Will never get here } sub baz { bat(); return 'baz'; # Will never get here } sub bat { my @out = qw/x y z/; longjump foo => @out; return 'bat'; # Will never get here } =head1 EXPORTS =over 4 =item $out = setjump($NAME, sub { ... }) =item $out = setjump $NAME, sub { ... } =item $out = setjump($NAME => sub { ... }) =item $out = setjump $NAME => sub { ... } Set a named point to which you will return when calling C. C<$out> will be C if C was not called. C<$out> will be an arrayref if C was called. The C<$out> arrayref will be empty, but present if C is called without any return values. The return value will always be false if C was not called, and will always be true if it was called. You cannot nest multiple jump points with the same name, but you can nest multiple jump points if they have unqiue names. C will always jump to the correct name. =item longjump($NAME) =item longjump $NAME =item longjump($NAME, @RETURN_LIST) =item longjump($NAME => @RETURN_LIST) =item longjump $NAME => @RETURN_LIST Jump to the named point, optionally with values to return. This will throw exceptions if you use an invalid C<$NAME>, which includes the case of calling it without a set jump point. =back =head1 SOURCE The source code repository for Long-Jump can be found at F. =head1 MAINTAINERS =over 4 =item Chad Granum Eexodist@cpan.orgE =back =head1 AUTHORS =over 4 =item Chad Granum Eexodist@cpan.orgE =back =head1 COPYRIGHT Copyright 2018 Chad Granum Eexodist7@gmail.comE. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See F =cut Long-Jump-0.000001/Makefile.PL0000644000175000017500000000203213544237671015445 0ustar exodistexodist# This file was automatically generated by Dist::Zilla::Plugin::MakeMaker v6.012. use strict; use warnings; use 5.008001; use ExtUtils::MakeMaker; my %WriteMakefileArgs = ( "ABSTRACT" => "Mechanism for returning to a specific point from a deeply nested stack.", "AUTHOR" => "Chad Granum ", "CONFIGURE_REQUIRES" => { "ExtUtils::MakeMaker" => 0 }, "DISTNAME" => "Long-Jump", "LICENSE" => "perl", "MIN_PERL_VERSION" => "5.008001", "NAME" => "Long::Jump", "PREREQ_PM" => {}, "TEST_REQUIRES" => { "Test2::Suite" => "0.000126" }, "VERSION" => "0.000001", "test" => { "TESTS" => "t/*.t" } ); my %FallbackPrereqs = ( "Test2::Suite" => "0.000126" ); unless ( eval { ExtUtils::MakeMaker->VERSION(6.63_03) } ) { delete $WriteMakefileArgs{TEST_REQUIRES}; delete $WriteMakefileArgs{BUILD_REQUIRES}; $WriteMakefileArgs{PREREQ_PM} = \%FallbackPrereqs; } delete $WriteMakefileArgs{CONFIGURE_REQUIRES} unless eval { ExtUtils::MakeMaker->VERSION(6.52) }; WriteMakefile(%WriteMakefileArgs); Long-Jump-0.000001/README.md0000644000175000017500000000520513544237671014757 0ustar exodistexodist# NAME Long::Jump - Mechanism for returning to a specific point from a deeply nested stack. # DESCRIPTION This module essentially provides a multi-level return. You can mark a spot with `setjump()` and then unwind the stack back to that point from any nested stack frame by name using `longjump()`. You can also provide a list of return values. This is not quite a match for C's long jump, but it is "close enough". It is safer than C's jump in that it only lets you escape frames by going up the stack, you cannot jump in other ways. # SYNOPSIS use Long::Jump qw/setjump longjump/; my $out = setjump foo => sub { bar(); ...; # Will never get here }; is($out, [qw/x y z/], "Got results of the long jump"); $out = setjump foo => sub { print "Not calling longjump"; }; is($out, undef, "longjump was not called so we got an undef response"); sub bar { baz(); return 'bar'; # Will never get here } sub baz { bat(); return 'baz'; # Will never get here } sub bat { my @out = qw/x y z/; longjump foo => @out; return 'bat'; # Will never get here } # EXPORTS - $out = setjump($NAME, sub { ... }) - $out = setjump $NAME, sub { ... } - $out = setjump($NAME => sub { ... }) - $out = setjump $NAME => sub { ... } Set a named point to which you will return when calling `longjump()`. `$out` will be `undef` if `longjump()` was not called. `$out` will be an arrayref if `longjump()` was called. The `$out` arrayref will be empty, but present if `longjump()` is called without any return values. The return value will always be false if `longjump` was not called, and will always be true if it was called. You cannot nest multiple jump points with the same name, but you can nest multiple jump points if they have unqiue names. `longjump()` will always jump to the correct name. - longjump($NAME) - longjump $NAME - longjump($NAME, @RETURN\_LIST) - longjump($NAME => @RETURN\_LIST) - longjump $NAME => @RETURN\_LIST Jump to the named point, optionally with values to return. This will throw exceptions if you use an invalid `$NAME`, which includes the case of calling it without a set jump point. # SOURCE The source code repository for Long-Jump can be found at `https://github.com/exodist/Long-Jump/`. # MAINTAINERS - Chad Granum # AUTHORS - Chad Granum # COPYRIGHT Copyright 2018 Chad Granum . This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See `http://dev.perl.org/licenses/` Long-Jump-0.000001/META.json0000644000175000017500000000235313544237671015122 0ustar exodistexodist{ "abstract" : "Mechanism for returning to a specific point from a deeply nested stack.", "author" : [ "Chad Granum " ], "dynamic_config" : 0, "generated_by" : "Dist::Zilla version 6.012, CPAN::Meta::Converter version 2.150010", "license" : [ "perl_5" ], "meta-spec" : { "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", "version" : 2 }, "name" : "Long-Jump", "prereqs" : { "configure" : { "requires" : { "ExtUtils::MakeMaker" : "0" } }, "develop" : { "requires" : { "Test::Pod" : "1.41" } }, "runtime" : { "requires" : { "perl" : "5.008001" } }, "test" : { "requires" : { "Test2::Suite" : "0.000126" } } }, "release_status" : "stable", "resources" : { "bugtracker" : { "web" : "https://github.com/exodist/Long-Jump/issues" }, "repository" : { "type" : "git", "url" : "https://github.com/exodist/Long-Jump/" } }, "version" : "0.000001", "x_generated_by_perl" : "v5.30.0", "x_serialization_backend" : "Cpanel::JSON::XS version 4.12" } Long-Jump-0.000001/t/0000755000175000017500000000000013544237671013741 5ustar exodistexodistLong-Jump-0.000001/t/basic.t0000644000175000017500000000461313544237671015213 0ustar exodistexodistuse Test2::V0; use Long::Jump qw/setjump longjump/; BEGIN { my $got = setjump foo => sub { longjump foo => qw/x y z/; ok(0, "Should not get here"); }; is($got, [qw/x y z/], "Got the results of the long jump in a BEGIN"); } my $got = setjump foo => sub { longjump foo => qw/x y z/; ok(0, "Should not get here"); }; is($got, [qw/x y z/], "Got the results of the long jump at runtime"); $got = setjump foo => sub { 1 }; is($got, undef, "Did not jump"); $got = setjump foo => sub { longjump 'foo' }; is($got, [], "Jump with no values"); $got = setjump foo => sub { setjump bar => sub { setjump baz => sub { longjump foo => qw/x y z/; ok(0, "Should not get here"); }; ok(0, "Should not get here"); }; ok(0, "Should not get here"); }; is($got, [qw/x y z/], "Got the results of the long jump within several jump points"); $got = setjump foo => sub { my $in = setjump bar => sub { setjump baz => sub { longjump bar => qw/x y z/; ok(0, "Should not get here"); }; ok(0, "Should not get here"); }; is($in, [qw/x y z/], "inner jump got args"); }; is($got, undef, "Outer jump did not get anything"); like(dies { setjump() }, qr/You must name your jump point/, "Need to label the jump" ); like(dies { setjump('foo') }, qr/You must provide a subroutine as a second argument/, "Need a sub" ); like(dies { setjump('foo', {}) }, qr/You must provide a subroutine as a second argument/, "Must be a coderef" ); like( dies { setjump( 'foo', sub { setjump('foo', sub { }); } ) }, qr/There is already a jump point named 'foo'/, "Cannot nest jump points with the same name" ); like( dies { longjump 'foo' }, qr/No such jump point: 'foo'/, "Must be a valid jump point" ); { no warnings 'redefine'; my $count = 1; # This lets us skip the first croak and test the second local *Long::Jump::croak = sub { return if $count--; Carp::croak(@_); }; # Theoretically a user can never get here, but if they do we want to be # sure to see the full error message. like( dies { longjump 'foo' }, qr/longjump\('foo'\) failed, error: Label not found for "last LONG_JUMP_SET"/, "Errors in the call to 'last' get passed on" ); } done_testing; Long-Jump-0.000001/META.yml0000644000175000017500000000126613544237671014754 0ustar exodistexodist--- abstract: 'Mechanism for returning to a specific point from a deeply nested stack.' author: - 'Chad Granum ' build_requires: Test2::Suite: '0.000126' configure_requires: ExtUtils::MakeMaker: '0' dynamic_config: 0 generated_by: 'Dist::Zilla version 6.012, CPAN::Meta::Converter version 2.150010' license: perl meta-spec: url: http://module-build.sourceforge.net/META-spec-v1.4.html version: '1.4' name: Long-Jump requires: perl: '5.008001' resources: bugtracker: https://github.com/exodist/Long-Jump/issues repository: https://github.com/exodist/Long-Jump/ version: '0.000001' x_generated_by_perl: v5.30.0 x_serialization_backend: 'YAML::Tiny version 1.73' Long-Jump-0.000001/cpanfile0000644000175000017500000000034013544237671015177 0ustar exodistexodistrequires "perl" => "5.008001"; on 'test' => sub { requires "Test2::Suite" => "0.000126"; }; on 'configure' => sub { requires "ExtUtils::MakeMaker" => "0"; }; on 'develop' => sub { requires "Test::Pod" => "1.41"; }; Long-Jump-0.000001/dist.ini0000644000175000017500000000316213544237671015144 0ustar exodistexodistname = Long-Jump author = Chad Granum license = Perl_5 copyright_holder = Chad Granum [RewriteVersion] ; sets dist version from main module's $VERSION [License] [ManifestSkip] [Manifest] [NextRelease] [GatherDir] exclude_match = ^xt/downstream ; only run these tests locally exclude_filename = LICENSE exclude_filename = Makefile.PL exclude_filename = cpanfile exclude_filename = README exclude_filename = README.md [PodSyntaxTests] [TestRelease] [MetaResources] bugtracker.web = https://github.com/exodist/Long-Jump/issues repository.url = https://github.com/exodist/Long-Jump/ repository.type = git [Prereqs] perl = 5.008001 [Prereqs / TestRequires] Test2::Suite = 0.000126 [MakeMaker] [CPANFile] [MetaYAML] [MetaJSON] ; authordep Pod::Markdown [ReadmeFromPod / Markdown] filename = lib/Long/Jump.pm type = markdown readme = README.md [ReadmeFromPod / Text] filename = lib/Long/Jump.pm type = text readme = README [CopyFilesFromBuild] copy = LICENSE copy = cpanfile copy = README copy = README.md copy = Makefile.PL [Git::Check] allow_dirty = Makefile.PL allow_dirty = README allow_dirty = README.md allow_dirty = cpanfile allow_dirty = LICENSE allow_dirty = Changes [Git::Commit] allow_dirty = Makefile.PL allow_dirty = README allow_dirty = README.md allow_dirty = cpanfile allow_dirty = LICENSE allow_dirty = Changes [Git::Tag] [FakeRelease] [BumpVersionAfterRelease] [Git::Commit / Commit_Changes] munge_makefile_pl = true allow_dirty_match = ^lib allow_dirty = Makefile.PL allow_dirty = README allow_dirty = README.md allow_dirty = cpanfile allow_dirty = LICENSE commit_msg = Automated Version Bump Long-Jump-0.000001/MANIFEST0000644000175000017500000000033613544237671014631 0ustar exodistexodist# This file was automatically generated by Dist::Zilla::Plugin::Manifest v6.012. Changes LICENSE MANIFEST META.json META.yml Makefile.PL README README.md cpanfile dist.ini lib/Long/Jump.pm t/basic.t xt/author/pod-syntax.t Long-Jump-0.000001/Changes0000644000175000017500000000011713544237671014770 0ustar exodistexodist0.000001 2019-09-29 16:35:20-07:00 America/Los_Angeles - Initial Version Long-Jump-0.000001/LICENSE0000644000175000017500000004365213544237671014515 0ustar exodistexodistThis software is copyright (c) 2019 by Chad Granum. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. Terms of the Perl programming language system itself a) the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version, or b) the "Artistic License" --- The GNU General Public License, Version 1, February 1989 --- This software is Copyright (c) 2019 by Chad Granum. This is free software, licensed under: The GNU General Public License, Version 1, February 1989 GNU GENERAL PUBLIC LICENSE Version 1, February 1989 Copyright (C) 1989 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The license agreements of most software companies try to keep users at the mercy of those companies. By contrast, our General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. The General Public License applies to the Free Software Foundation's software and to any other program whose authors commit to using it. You can use it for your programs, too. When we speak of free software, we are referring to freedom, not price. Specifically, the General Public License is designed to make sure that you have the freedom to give away or sell copies of free software, that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of a such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must tell them their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License Agreement applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any work containing the Program or a portion of it, either verbatim or with modifications. Each licensee is addressed as "you". 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this General Public License and to the absence of any warranty; and give any other recipients of the Program a copy of this General Public License along with the Program. You may charge a fee for the physical act of transferring a copy. 2. You may modify your copy or copies of the Program or any portion of it, and copy and distribute such modifications under the terms of Paragraph 1 above, provided that you also do the following: a) cause the modified files to carry prominent notices stating that you changed the files and the date of any change; and b) cause the whole of any work that you distribute or publish, that in whole or in part contains the Program or any part thereof, either with or without modifications, to be licensed at no charge to all third parties under the terms of this General Public License (except that you may choose to grant warranty protection to some or all third parties, at your option). c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the simplest and most usual way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this General Public License. d) You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. Mere aggregation of another independent work with the Program (or its derivative) on a volume of a storage or distribution medium does not bring the other work under the scope of these terms. 3. You may copy and distribute the Program (or a portion or derivative of it, under Paragraph 2) in object code or executable form under the terms of Paragraphs 1 and 2 above provided that you also do one of the following: a) accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Paragraphs 1 and 2 above; or, b) accompany it with a written offer, valid for at least three years, to give any third party free (except for a nominal charge for the cost of distribution) a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Paragraphs 1 and 2 above; or, c) accompany it with the information you received as to where the corresponding source code may be obtained. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form alone.) Source code for a work means the preferred form of the work for making modifications to it. For an executable file, complete source code means all the source code for all modules it contains; but, as a special exception, it need not include source code for modules which are standard libraries that accompany the operating system on which the executable file runs, or for standard header files or definitions files that accompany that operating system. 4. You may not copy, modify, sublicense, distribute or transfer the Program except as expressly provided under this General Public License. Any attempt otherwise to copy, modify, sublicense, distribute or transfer the Program is void, and will automatically terminate your rights to use the Program under this License. However, parties who have received copies, or rights to use copies, from you under this General Public License will not have their licenses terminated so long as such parties remain in full compliance. 5. By copying, distributing or modifying the Program (or any work based on the Program) you indicate your acceptance of this license to do so, and all its terms and conditions. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. 7. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of the license which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the license, you may choose any version ever published by the Free Software Foundation. 8. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 9. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS Appendix: How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to humanity, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19xx name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (a program to direct compilers to make passes at assemblers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice That's all there is to it! --- The Artistic License 1.0 --- This software is Copyright (c) 2019 by Chad Granum. This is free software, licensed under: The Artistic License 1.0 The Artistic License Preamble The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications. 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The End Long-Jump-0.000001/README0000644000175000017500000000547213544237671014366 0ustar exodistexodistNAME Long::Jump - Mechanism for returning to a specific point from a deeply nested stack. DESCRIPTION This module essentially provides a multi-level return. You can mark a spot with setjump() and then unwind the stack back to that point from any nested stack frame by name using longjump(). You can also provide a list of return values. This is not quite a match for C's long jump, but it is "close enough". It is safer than C's jump in that it only lets you escape frames by going up the stack, you cannot jump in other ways. SYNOPSIS use Long::Jump qw/setjump longjump/; my $out = setjump foo => sub { bar(); ...; # Will never get here }; is($out, [qw/x y z/], "Got results of the long jump"); $out = setjump foo => sub { print "Not calling longjump"; }; is($out, undef, "longjump was not called so we got an undef response"); sub bar { baz(); return 'bar'; # Will never get here } sub baz { bat(); return 'baz'; # Will never get here } sub bat { my @out = qw/x y z/; longjump foo => @out; return 'bat'; # Will never get here } EXPORTS $out = setjump($NAME, sub { ... }) $out = setjump $NAME, sub { ... } $out = setjump($NAME => sub { ... }) $out = setjump $NAME => sub { ... } Set a named point to which you will return when calling longjump(). $out will be undef if longjump() was not called. $out will be an arrayref if longjump() was called. The $out arrayref will be empty, but present if longjump() is called without any return values. The return value will always be false if longjump was not called, and will always be true if it was called. You cannot nest multiple jump points with the same name, but you can nest multiple jump points if they have unqiue names. longjump() will always jump to the correct name. longjump($NAME) longjump $NAME longjump($NAME, @RETURN_LIST) longjump($NAME => @RETURN_LIST) longjump $NAME => @RETURN_LIST Jump to the named point, optionally with values to return. This will throw exceptions if you use an invalid $NAME, which includes the case of calling it without a set jump point. SOURCE The source code repository for Long-Jump can be found at https://github.com/exodist/Long-Jump/. MAINTAINERS Chad Granum AUTHORS Chad Granum COPYRIGHT Copyright 2018 Chad Granum . This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/