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package Perl::MinimumVersion; |
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$Perl::MinimumVersion::VERSION = '1.42'; # TRIAL |
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=pod |
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=head1 NAME |
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Perl::MinimumVersion - Find a minimum required version of perl for Perl code |
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=head1 SYNOPSIS |
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# Create the version checking object |
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$object = Perl::MinimumVersion->new( $filename ); |
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$object = Perl::MinimumVersion->new( \$source ); |
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$object = Perl::MinimumVersion->new( $ppi_document ); |
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# Find the minimum version |
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$version = $object->minimum_version; |
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=head1 DESCRIPTION |
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C takes Perl source code and calculates the minimum |
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version of perl required to be able to run it. Because it is based on |
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L, it can do this without having to actually load the code. |
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Currently it tests both the syntax of your code, and the use of explicit |
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version dependencies such as C. |
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Future plans are to also add support for tracing module dependencies. |
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Using C is dead simple, the synopsis pretty much |
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covers it. |
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The distribution comes with a script called L, |
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which is the easiest way to run C on your code: |
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% perlver lib/Foo/Bar.pm |
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See the L for more details. |
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=head1 METHODS |
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=cut |
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use 5.006; |
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use strict; |
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use warnings; |
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use version 0.76 (); |
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41485
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use Carp (); |
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use Exporter (); |
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use List::Util 1.20 qw(max first); |
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use Params::Util 0.25 ('_INSTANCE', '_CLASS'); |
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use PPI::Util ('_Document'); |
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use PPI 1.252 (); |
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5334
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use PPIx::Utils qw{ |
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:classification |
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:traversal |
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}; |
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325975
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use PPIx::Regexp 0.051; |
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2684354
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807
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10312
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use Perl::MinimumVersion::Reason (); |
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89
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5772
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60
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61
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our (@ISA, @EXPORT_OK, %CHECKS, @CHECKS_RV ,%MATCHES); |
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BEGIN { |
63
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# Export the PMV convenience constant |
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596
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@ISA = 'Exporter'; |
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94
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@EXPORT_OK = 'PMV'; |
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67
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# The primary list of version checks |
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21
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1384
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%CHECKS = ( |
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_heredoc_indent => version->new('5.025.007'), |
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_double_diamond_operator => version->new('5.021.005'), |
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_postfix_deref => version->new('5.020'), |
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73
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# _stacked_labels => version->new('5.014'), |
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75
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_yada_yada_yada => version->new('5.012'), |
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_pkg_name_version => version->new('5.012'), |
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_postfix_when => version->new('5.012'), |
78
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_perl_5012_pragmas => version->new('5.012'), |
79
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_while_readdir => version->new('5.012'), |
80
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81
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_perl_5010_pragmas => version->new('5.010'), |
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_perl_5010_operators => version->new('5.010'), |
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_perl_5010_magic => version->new('5.010'), |
84
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_state_declaration => version->new('5.010'), |
85
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86
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# Various small things |
87
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_bugfix_magic_errno => version->new('5.008.003'), |
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_is_utf8 => version->new('5.008.001'), |
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_unquoted_versions => version->new('5.008.001'), |
90
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_perl_5008_pragmas => version->new('5.008'), |
91
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_constant_hash => version->new('5.008'), |
92
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_local_soft_reference => version->new('5.008'), |
93
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_use_carp_version => version->new('5.008'), |
94
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_open_temp => version->new('5.008'), |
95
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_open_scalar => version->new('5.008'), |
96
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_internals_svreadonly => version->new('5.008'), |
97
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98
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# Included in 5.6. Broken until 5.8 |
99
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_pragma_utf8 => version->new('5.008'), |
100
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); |
101
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21
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113
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@CHECKS_RV = ( #subs that return version |
102
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'_feature_bundle', '_regex', '_re_flags', '_each_argument', '_binmode_2_arg', |
103
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'_scheduled_blocks', '_experimental_bundle', |
104
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); |
105
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106
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# Predefine some indexes needed by various check methods |
107
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21
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151809
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%MATCHES = ( |
108
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_perl_5012_pragmas => { |
109
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deprecate => 1, |
110
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}, |
111
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_perl_5010_pragmas => { |
112
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mro => 1, |
113
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feature => 1, |
114
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}, |
115
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_perl_5010_operators => { |
116
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'//' => 1, |
117
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'//=' => 1, |
118
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'~~' => 1, |
119
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}, |
120
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_perl_5010_magic => { |
121
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'%+' => 1, |
122
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'%-' => 1, |
123
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}, |
124
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_perl_5008_pragmas => { |
125
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threads => 1, |
126
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'threads::shared' => 1, |
127
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sort => 1, |
128
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encoding => 1, |
129
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}, |
130
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); |
131
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} |
132
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133
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sub PMV () { 'Perl::MinimumVersion' } |
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135
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136
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137
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138
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139
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##################################################################### |
140
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# Constructor |
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142
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=pod |
143
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144
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=head2 new |
145
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146
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# Create the version checking object |
147
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$object = Perl::MinimumVersion->new( $filename ); |
148
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$object = Perl::MinimumVersion->new( \$source ); |
149
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$object = Perl::MinimumVersion->new( $ppi_document ); |
150
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151
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The C constructor creates a new version checking object for a |
152
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L. You can also provide the document to be read as a |
153
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file name, or as a C reference containing the code. |
154
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155
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Returns a new C object, or C on error. |
156
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157
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=cut |
158
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159
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sub new { |
160
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205
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50
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205
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1
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200941
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my $class = ref $_[0] ? ref shift : shift; |
161
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205
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100
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693
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my $Document = _Document(shift) or return undef; |
162
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202
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33
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562333
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my $default = _INSTANCE(shift, 'version') || version->new('5.006'); |
163
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164
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# Create the object |
165
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202
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1257
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my $self = bless { |
166
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Document => $Document, |
167
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168
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# Checking limit and default minimum version. |
169
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# Explicitly don't check below this version. |
170
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default => $default, |
171
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172
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# Caches for resolved versions |
173
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explicit => undef, |
174
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syntax => undef, |
175
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external => undef, |
176
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}, $class; |
177
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178
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202
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607
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$self; |
179
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} |
180
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181
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=pod |
182
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183
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=head2 Document |
184
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185
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The C accessor can be used to get the L object |
186
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back out of the version checker. |
187
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188
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=cut |
189
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190
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sub Document { |
191
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$_[0]->{Document} |
192
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1416
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1416
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1
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8409
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} |
193
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194
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195
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196
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197
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198
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##################################################################### |
199
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# Main Methods |
200
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201
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=pod |
202
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203
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=head2 minimum_version |
204
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205
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The C method is the primary method for finding the |
206
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minimum perl version required based on C factors in the document. |
207
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208
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At the present time, this is just syntax and explicit version checks, |
209
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as L is not yet completed. |
210
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211
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Returns a L object, or C on error. |
212
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213
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=cut |
214
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215
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sub minimum_version { |
216
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56
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50
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56
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1
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6356
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my $self = _SELF(\@_) or return undef; |
217
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56
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123
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my $minimum = $self->{default}; # Sensible default |
218
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219
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# Is the explicit version greater? |
220
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150
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my $explicit = $self->minimum_explicit_version; |
221
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56
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50
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return undef unless defined $explicit; |
222
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56
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100
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100
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180
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if ( $explicit and $explicit > $minimum ) { |
223
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1
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3
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$minimum = $explicit; |
224
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} |
225
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226
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# Is the syntax version greater? |
227
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# Since this is the most expensive operation (for this file), |
228
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# we need to be careful we don't run things we don't need to. |
229
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56
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147
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my $syntax = $self->minimum_syntax_version; |
230
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56
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50
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159
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return undef unless defined $syntax; |
231
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56
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100
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66
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558
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if ( $syntax and $syntax > $minimum ) { |
232
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40
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96
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$minimum = $syntax; |
233
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} |
234
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235
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### FIXME - Disabled until minimum_external_version completed |
236
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# Is the external version greater? |
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#my $external = $self->minimum_external_version; |
238
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#return undef unless defined $external; |
239
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#if ( $external and $external > $minimum ) { |
240
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# $minimum = $external; |
241
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#} |
242
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243
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56
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227
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$minimum; |
244
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} |
245
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246
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sub minimum_reason { |
247
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0
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0
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0
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0
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0
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my $self = _SELF(\@_) or return undef; |
248
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0
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0
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my $minimum = $self->default_reason; # Sensible default |
249
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250
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# Is the explicit version greater? |
251
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0
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0
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my $explicit = $self->minimum_explicit_version; |
252
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0
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0
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0
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return undef unless defined $explicit; |
253
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0
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0
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0
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0
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if ( $explicit and $explicit > $minimum ) { |
254
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0
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0
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$minimum = $explicit; |
255
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} |
256
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257
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} |
258
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259
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sub default_reason { |
260
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Perl::MinimumVersion::Reason->new( |
261
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rule => 'default', |
262
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version => $_[0]->{default}, |
263
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0
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0
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0
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0
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element => undef, |
264
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); |
265
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} |
266
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267
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=pod |
268
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269
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=head2 minimum_explicit_version |
270
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271
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The C method checks through Perl code for the |
272
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use of explicit version dependencies such as. |
273
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274
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use 5.006; |
275
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require 5.005_03; |
276
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277
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Although there is almost always only one of these in a file, if more than |
278
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|
one are found, the highest version dependency will be returned. |
279
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280
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Returns a L object, false if no dependencies could be found, |
281
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|
or C on error. |
282
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283
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|
=cut |
284
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285
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|
sub minimum_explicit_version { |
286
|
57
|
50
|
|
57
|
1
|
126
|
my $self = _SELF(\@_) or return undef; |
287
|
57
|
|
|
|
|
166
|
my $reason = $self->minimum_explicit_reason(@_); |
288
|
57
|
100
|
|
|
|
178
|
return $reason ? $reason->version : $reason; |
289
|
|
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|
|
|
} |
290
|
|
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291
|
|
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|
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|
|
sub minimum_explicit_reason { |
292
|
57
|
50
|
|
57
|
0
|
130
|
my $self = _SELF(\@_) or return undef; |
293
|
57
|
50
|
|
|
|
202
|
unless ( defined $self->{explicit} ) { |
294
|
57
|
|
|
|
|
150
|
$self->{explicit} = $self->_minimum_explicit_version; |
295
|
|
|
|
|
|
|
} |
296
|
57
|
|
|
|
|
139
|
return $self->{explicit}; |
297
|
|
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|
|
|
} |
298
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|
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|
299
|
|
|
|
|
|
|
sub _minimum_explicit_version { |
300
|
57
|
50
|
|
57
|
|
156
|
my $self = shift or return undef; |
301
|
|
|
|
|
|
|
my $explicit = $self->Document->find( sub { |
302
|
591
|
100
|
|
591
|
|
8172
|
$_[1]->isa('PPI::Statement::Include') or return ''; |
303
|
25
|
100
|
|
|
|
82
|
$_[1]->version or return ''; |
304
|
4
|
|
|
|
|
110
|
1; |
305
|
57
|
|
|
|
|
144
|
} ); |
306
|
57
|
100
|
|
|
|
885
|
return $explicit unless $explicit; |
307
|
|
|
|
|
|
|
|
308
|
|
|
|
|
|
|
# Find the highest version |
309
|
3
|
|
|
|
|
7
|
my $max = undef; |
310
|
3
|
|
|
|
|
7
|
my $element = undef; |
311
|
3
|
|
|
|
|
11
|
foreach my $include ( @$explicit ) { |
312
|
4
|
|
|
|
|
10
|
my $version = version->new($include->version); |
313
|
4
|
50
|
66
|
|
|
121
|
if ( not $element or $version > $max ) { |
314
|
4
|
|
|
|
|
9
|
$max = $version; |
315
|
4
|
|
|
|
|
12
|
$element = $include; |
316
|
|
|
|
|
|
|
} |
317
|
|
|
|
|
|
|
} |
318
|
|
|
|
|
|
|
|
319
|
3
|
|
|
|
|
20
|
return Perl::MinimumVersion::Reason->new( |
320
|
|
|
|
|
|
|
rule => 'explicit', |
321
|
|
|
|
|
|
|
version => $max, |
322
|
|
|
|
|
|
|
element => $element, |
323
|
|
|
|
|
|
|
); |
324
|
|
|
|
|
|
|
} |
325
|
|
|
|
|
|
|
|
326
|
|
|
|
|
|
|
=pod |
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
=head2 minimum_syntax_version $limit |
329
|
|
|
|
|
|
|
|
330
|
|
|
|
|
|
|
The C method will explicitly test only the |
331
|
|
|
|
|
|
|
Document's syntax to determine it's minimum version, to the extent |
332
|
|
|
|
|
|
|
that this is possible. |
333
|
|
|
|
|
|
|
|
334
|
|
|
|
|
|
|
It takes an optional parameter of a L object defining |
335
|
|
|
|
|
|
|
the lowest known current value. For example, if it is already known |
336
|
|
|
|
|
|
|
that it must be 5.006 or higher, then you can provide a param of |
337
|
|
|
|
|
|
|
qv(5.006) and the method will not run any of the tests below this |
338
|
|
|
|
|
|
|
version. This should provide dramatic speed improvements for |
339
|
|
|
|
|
|
|
large and/or complex documents. |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
The limitations of parsing Perl mean that this method may provide |
342
|
|
|
|
|
|
|
artificially low results, but should not artificially high results. |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
For example, if C returned 5.006, you can be |
345
|
|
|
|
|
|
|
confident it will not run on anything lower, although there is a chance |
346
|
|
|
|
|
|
|
that during actual execution it may use some untestable feature that |
347
|
|
|
|
|
|
|
creates a dependency on a higher version. |
348
|
|
|
|
|
|
|
|
349
|
|
|
|
|
|
|
Returns a L object, false if no dependencies could be found, |
350
|
|
|
|
|
|
|
or C on error. |
351
|
|
|
|
|
|
|
|
352
|
|
|
|
|
|
|
=cut |
353
|
|
|
|
|
|
|
|
354
|
|
|
|
|
|
|
sub minimum_syntax_version { |
355
|
62
|
50
|
|
62
|
1
|
174
|
my $self = _SELF(\@_) or return undef; |
356
|
62
|
|
|
|
|
177
|
my $reason = $self->minimum_syntax_reason(@_); |
357
|
62
|
100
|
|
|
|
233
|
return $reason ? $reason->version : $reason; |
358
|
|
|
|
|
|
|
} |
359
|
|
|
|
|
|
|
|
360
|
|
|
|
|
|
|
sub minimum_syntax_reason { |
361
|
65
|
50
|
|
65
|
0
|
161
|
my $self = _SELF(\@_) or return undef; |
362
|
65
|
|
|
|
|
131
|
my $limit = shift; |
363
|
65
|
100
|
100
|
|
|
259
|
if ( defined $limit and not _INSTANCE($limit, 'version') ) { |
364
|
1
|
|
|
|
|
17
|
$limit = version->new("$limit"); |
365
|
|
|
|
|
|
|
} |
366
|
65
|
100
|
|
|
|
174
|
if ( defined $self->{syntax} ) { |
367
|
5
|
100
|
100
|
|
|
22
|
if ( !defined($limit) or $self->{syntax}->version >= $limit ) { |
368
|
|
|
|
|
|
|
# Previously discovered minimum is what they want |
369
|
4
|
|
|
|
|
12
|
return $self->{syntax}; |
370
|
|
|
|
|
|
|
} |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
# Rather than return a value BELOW their filter, |
373
|
|
|
|
|
|
|
# which they would not be expecting, return false. |
374
|
1
|
|
|
|
|
4
|
return ''; |
375
|
|
|
|
|
|
|
} |
376
|
|
|
|
|
|
|
|
377
|
|
|
|
|
|
|
# Look for the value |
378
|
60
|
|
|
|
|
158
|
my $syntax = $self->_minimum_syntax_version( $limit ); |
379
|
|
|
|
|
|
|
|
380
|
|
|
|
|
|
|
# If we found a value, it will be stable, cache it. |
381
|
|
|
|
|
|
|
# If we did NOT, don't cache as subsequent runs without |
382
|
|
|
|
|
|
|
# the filter may find a version. |
383
|
60
|
100
|
|
|
|
179
|
if ( $syntax ) { |
384
|
42
|
|
|
|
|
96
|
$self->{syntax} = $syntax; |
385
|
42
|
|
|
|
|
99
|
return $self->{syntax}; |
386
|
|
|
|
|
|
|
} |
387
|
|
|
|
|
|
|
|
388
|
18
|
|
|
|
|
48
|
return ''; |
389
|
|
|
|
|
|
|
} |
390
|
|
|
|
|
|
|
|
391
|
|
|
|
|
|
|
#for Perl::Critic::Policy::Compatibility::PerlMinimumVersionAndWhy |
392
|
|
|
|
|
|
|
sub _set_checks2skip { |
393
|
1
|
|
|
1
|
|
8
|
my $self = shift; |
394
|
1
|
|
|
|
|
2
|
my $list = shift; |
395
|
1
|
|
|
|
|
5
|
$self->{_checks2skip} = $list; |
396
|
|
|
|
|
|
|
} |
397
|
|
|
|
|
|
|
sub _set_collect_all_reasons { |
398
|
1
|
|
|
1
|
|
8
|
my $self = shift; |
399
|
1
|
|
|
|
|
3
|
my $value = shift; |
400
|
1
|
50
|
|
|
|
5
|
$value = 1 unless defined $value; |
401
|
1
|
|
|
|
|
4
|
$self->{_collect_all_reasons} = $value; |
402
|
|
|
|
|
|
|
} |
403
|
|
|
|
|
|
|
|
404
|
|
|
|
|
|
|
sub _minimum_syntax_version { |
405
|
60
|
|
|
60
|
|
136
|
my $self = shift; |
406
|
60
|
|
66
|
|
|
484
|
my $filter = shift || $self->{default}; |
407
|
|
|
|
|
|
|
|
408
|
60
|
|
|
|
|
177
|
my %checks2skip; |
409
|
60
|
100
|
|
|
|
102
|
@checks2skip{ @{ $self->{_checks2skip} || [] } } = (); |
|
60
|
|
|
|
|
264
|
|
410
|
|
|
|
|
|
|
|
411
|
60
|
|
|
|
|
126
|
my %rv_result; |
412
|
|
|
|
|
|
|
my $current_reason; |
413
|
60
|
|
|
|
|
150
|
foreach my $rule ( @CHECKS_RV ) { |
414
|
420
|
100
|
|
|
|
957
|
next if exists $checks2skip{$rule}; |
415
|
419
|
|
|
|
|
1185
|
my ($v, $obj) = $self->$rule(); |
416
|
419
|
|
|
|
|
2156
|
$v = version->new($v); |
417
|
419
|
100
|
|
|
|
2276
|
if ( $v > $filter ) { |
418
|
19
|
|
|
|
|
206
|
$current_reason = Perl::MinimumVersion::Reason->new( |
419
|
|
|
|
|
|
|
rule => $rule, |
420
|
|
|
|
|
|
|
version => $v, |
421
|
|
|
|
|
|
|
element => _INSTANCE($obj, 'PPI::Element'), |
422
|
|
|
|
|
|
|
); |
423
|
19
|
100
|
|
|
|
65
|
if ($self->{_collect_all_reasons}) { |
424
|
1
|
|
|
|
|
3
|
push @{ $self->{_all_reasons} }, $current_reason; |
|
1
|
|
|
|
|
5
|
|
425
|
|
|
|
|
|
|
} else { |
426
|
18
|
|
|
|
|
56
|
$filter = $v; |
427
|
|
|
|
|
|
|
} |
428
|
|
|
|
|
|
|
} |
429
|
|
|
|
|
|
|
} |
430
|
|
|
|
|
|
|
|
431
|
|
|
|
|
|
|
|
432
|
|
|
|
|
|
|
# Always check in descending version order. |
433
|
|
|
|
|
|
|
# By doing it this way, the version of the first check that matches |
434
|
|
|
|
|
|
|
# is also the version of the document as a whole. |
435
|
|
|
|
|
|
|
my @rules = sort { |
436
|
3386
|
|
|
|
|
7440
|
$CHECKS{$b} <=> $CHECKS{$a} |
437
|
|
|
|
|
|
|
} grep { |
438
|
60
|
50
|
|
|
|
385
|
not(exists $checks2skip{$_}) and $CHECKS{$_} > $filter |
|
1380
|
|
|
|
|
5788
|
|
439
|
|
|
|
|
|
|
} keys %CHECKS; |
440
|
|
|
|
|
|
|
|
441
|
60
|
|
|
|
|
205
|
foreach my $rule ( @rules ) { |
442
|
707
|
100
|
|
|
|
10917
|
my $result = $self->$rule() or next; |
443
|
|
|
|
|
|
|
|
444
|
|
|
|
|
|
|
# Create the result object |
445
|
|
|
|
|
|
|
my $reason = Perl::MinimumVersion::Reason->new( |
446
|
|
|
|
|
|
|
rule => $rule, |
447
|
25
|
|
|
|
|
988
|
version => $CHECKS{$rule}, |
448
|
|
|
|
|
|
|
element => _INSTANCE($result, 'PPI::Element'), |
449
|
|
|
|
|
|
|
); |
450
|
25
|
50
|
|
|
|
92
|
if ($self->{_collect_all_reasons}) { |
451
|
0
|
|
|
|
|
0
|
push @{ $self->{_all_reasons} }, $current_reason; |
|
0
|
|
|
|
|
0
|
|
452
|
|
|
|
|
|
|
} else { |
453
|
25
|
|
|
|
|
100
|
return $reason; |
454
|
|
|
|
|
|
|
} |
455
|
|
|
|
|
|
|
|
456
|
|
|
|
|
|
|
} |
457
|
|
|
|
|
|
|
|
458
|
|
|
|
|
|
|
# Found nothing of interest |
459
|
35
|
|
100
|
|
|
630
|
return $current_reason || ''; |
460
|
|
|
|
|
|
|
} |
461
|
|
|
|
|
|
|
|
462
|
|
|
|
|
|
|
=pod |
463
|
|
|
|
|
|
|
|
464
|
|
|
|
|
|
|
=head2 minimum_external_version |
465
|
|
|
|
|
|
|
|
466
|
|
|
|
|
|
|
B
|
467
|
|
|
|
|
|
|
an exception> |
468
|
|
|
|
|
|
|
|
469
|
|
|
|
|
|
|
The C examines code for dependencies on other |
470
|
|
|
|
|
|
|
external files, and recursively traverses the dependency tree applying the |
471
|
|
|
|
|
|
|
same tests to those files as it does to the original. |
472
|
|
|
|
|
|
|
|
473
|
|
|
|
|
|
|
Returns a C object, false if no dependencies could be found, or |
474
|
|
|
|
|
|
|
C on error. |
475
|
|
|
|
|
|
|
|
476
|
|
|
|
|
|
|
=cut |
477
|
|
|
|
|
|
|
|
478
|
|
|
|
|
|
|
sub minimum_external_version { |
479
|
0
|
0
|
|
0
|
1
|
0
|
my $self = _SELF(\@_) or return undef; |
480
|
0
|
|
|
|
|
0
|
my $reason = $self->minimum_explicit_reason(@_); |
481
|
0
|
0
|
|
|
|
0
|
return $reason ? $reason->version : $reason; |
482
|
|
|
|
|
|
|
} |
483
|
|
|
|
|
|
|
|
484
|
|
|
|
|
|
|
sub minimum_external_reason { |
485
|
0
|
0
|
|
0
|
0
|
0
|
my $self = _SELF(\@_) or return undef; |
486
|
0
|
0
|
|
|
|
0
|
unless ( defined $self->{external} ) { |
487
|
0
|
|
|
|
|
0
|
$self->{external} = $self->_minimum_external_version; |
488
|
|
|
|
|
|
|
} |
489
|
0
|
|
|
|
|
0
|
$self->{external}; |
490
|
|
|
|
|
|
|
} |
491
|
|
|
|
|
|
|
|
492
|
|
|
|
|
|
|
sub _minimum_external_version { |
493
|
0
|
|
|
0
|
|
0
|
Carp::croak("Perl::MinimumVersion::minimum_external_version is not implemented"); |
494
|
|
|
|
|
|
|
} |
495
|
|
|
|
|
|
|
|
496
|
|
|
|
|
|
|
=pod |
497
|
|
|
|
|
|
|
|
498
|
|
|
|
|
|
|
=head2 version_markers |
499
|
|
|
|
|
|
|
|
500
|
|
|
|
|
|
|
This method returns a list of pairs in the form: |
501
|
|
|
|
|
|
|
|
502
|
|
|
|
|
|
|
($version, \@markers) |
503
|
|
|
|
|
|
|
|
504
|
|
|
|
|
|
|
Each pair represents all the markers that could be found indicating that the |
505
|
|
|
|
|
|
|
version was the minimum needed version. C<@markers> is an array of strings. |
506
|
|
|
|
|
|
|
Currently, these strings are not as clear as they might be, but this may be |
507
|
|
|
|
|
|
|
changed in the future. In other words: don't rely on them as specific |
508
|
|
|
|
|
|
|
identifiers. |
509
|
|
|
|
|
|
|
|
510
|
|
|
|
|
|
|
=cut |
511
|
|
|
|
|
|
|
|
512
|
|
|
|
|
|
|
sub version_markers { |
513
|
1
|
50
|
|
1
|
1
|
717
|
my $self = _SELF(\@_) or return undef; |
514
|
|
|
|
|
|
|
|
515
|
1
|
|
|
|
|
3
|
my %markers; |
516
|
|
|
|
|
|
|
|
517
|
1
|
50
|
|
|
|
6
|
if ( my $explicit = $self->minimum_explicit_version ) { |
518
|
1
|
|
|
|
|
9
|
$markers{ $explicit } = [ 'explicit' ]; |
519
|
|
|
|
|
|
|
} |
520
|
|
|
|
|
|
|
|
521
|
1
|
|
|
|
|
10
|
foreach my $check ( keys %CHECKS ) { |
522
|
23
|
100
|
|
|
|
355
|
next unless $self->$check(); |
523
|
1
|
|
50
|
|
|
54
|
my $markers = $markers{ $CHECKS{$check} } ||= []; |
524
|
1
|
|
|
|
|
4
|
push @$markers, $check; |
525
|
|
|
|
|
|
|
} |
526
|
|
|
|
|
|
|
|
527
|
1
|
|
|
|
|
18
|
my @rv; |
528
|
1
|
|
|
|
|
5
|
my %marker_ver = map { $_ => version->new($_) } keys %markers; |
|
2
|
|
|
|
|
15
|
|
529
|
|
|
|
|
|
|
|
530
|
1
|
|
|
|
|
6
|
foreach my $ver ( sort { $marker_ver{$b} <=> $marker_ver{$a} } keys %markers ) { |
|
1
|
|
|
|
|
8
|
|
531
|
2
|
|
|
|
|
7
|
push @rv, $marker_ver{$ver} => $markers{$ver}; |
532
|
|
|
|
|
|
|
} |
533
|
|
|
|
|
|
|
|
534
|
1
|
|
|
|
|
9
|
return @rv; |
535
|
|
|
|
|
|
|
} |
536
|
|
|
|
|
|
|
|
537
|
|
|
|
|
|
|
|
538
|
|
|
|
|
|
|
|
539
|
|
|
|
|
|
|
|
540
|
|
|
|
|
|
|
##################################################################### |
541
|
|
|
|
|
|
|
# Version Check Methods |
542
|
|
|
|
|
|
|
|
543
|
|
|
|
|
|
|
my %feature = |
544
|
|
|
|
|
|
|
( |
545
|
|
|
|
|
|
|
'say' => '5.10', |
546
|
|
|
|
|
|
|
'smartmatch' => '5.10', |
547
|
|
|
|
|
|
|
'state' => '5.10', |
548
|
|
|
|
|
|
|
'switch' => '5.10', |
549
|
|
|
|
|
|
|
'unicode_strings' => '5.14', |
550
|
|
|
|
|
|
|
'unicode_eval' => '5.16', |
551
|
|
|
|
|
|
|
'evalbytes' => '5.16', |
552
|
|
|
|
|
|
|
'current_sub' => '5.16', |
553
|
|
|
|
|
|
|
'array_base' => '5.16', #defined only in 5.16 |
554
|
|
|
|
|
|
|
'fc' => '5.16', |
555
|
|
|
|
|
|
|
'lexical_subs' => '5.18', |
556
|
|
|
|
|
|
|
'postderef' => '5.20', |
557
|
|
|
|
|
|
|
'postderef_qq' => '5.20', |
558
|
|
|
|
|
|
|
'signatures' => '5.20', |
559
|
|
|
|
|
|
|
'refaliasing' => '5.22', |
560
|
|
|
|
|
|
|
'bitwise' => '5.22', |
561
|
|
|
|
|
|
|
'declared_refs' => '5.26', |
562
|
|
|
|
|
|
|
'isa' => '5.32', |
563
|
|
|
|
|
|
|
'indirect' => '5.32', #defined only in 5.32 |
564
|
|
|
|
|
|
|
); |
565
|
|
|
|
|
|
|
my $feature_regexp = join('|', keys %feature); |
566
|
|
|
|
|
|
|
|
567
|
|
|
|
|
|
|
#:5.14 means same as :5.12, but :5.14 is not defined in feature.pm in perl 5.12. |
568
|
|
|
|
|
|
|
sub _feature_bundle { |
569
|
84
|
|
|
84
|
|
197
|
my @versions; |
570
|
84
|
|
|
|
|
155
|
my ($version, $obj); |
571
|
|
|
|
|
|
|
shift->Document->find( sub { |
572
|
772
|
100
|
|
772
|
|
10215
|
$_[1]->isa('PPI::Statement::Include') or return ''; |
573
|
49
|
100
|
|
|
|
152
|
$_[1]->pragma eq 'feature' or return ''; |
574
|
31
|
|
|
|
|
1089
|
my @child = $_[1]->schildren; |
575
|
31
|
|
|
|
|
493
|
my @args = @child[1..$#child]; # skip 'use', 'feature' and ';' |
576
|
31
|
|
|
|
|
65
|
foreach my $arg (@args) { |
577
|
92
|
|
|
|
|
663
|
my $v = 0; |
578
|
92
|
100
|
|
|
|
198
|
$v = $1 if ($arg->content =~ /:(5\.\d+)(?:\.\d+)?/); |
579
|
92
|
100
|
|
|
|
747
|
$v = max($v, $feature{$1}) if ($arg->content =~ /\b($feature_regexp)\b/); |
580
|
|
|
|
|
|
|
# |
581
|
92
|
100
|
100
|
|
|
1147
|
if ($v and $v > ($version || 0) ) { |
|
|
|
100
|
|
|
|
|
582
|
29
|
|
|
|
|
56
|
$version = $v; |
583
|
29
|
|
|
|
|
62
|
$obj = $_[1]; |
584
|
|
|
|
|
|
|
} |
585
|
|
|
|
|
|
|
} |
586
|
31
|
|
|
|
|
86
|
return ''; |
587
|
84
|
|
|
|
|
173
|
} ); |
588
|
84
|
100
|
|
|
|
1577
|
return (defined($version)?"$version.0":undef, $obj); |
589
|
|
|
|
|
|
|
} |
590
|
|
|
|
|
|
|
|
591
|
|
|
|
|
|
|
# list copied from experimental.pm v0.021 itself |
592
|
|
|
|
|
|
|
my %experimental = |
593
|
|
|
|
|
|
|
( |
594
|
|
|
|
|
|
|
array_base => '5', |
595
|
|
|
|
|
|
|
autoderef => '5.14', |
596
|
|
|
|
|
|
|
bitwise => '5.22', |
597
|
|
|
|
|
|
|
const_attr => '5.22', |
598
|
|
|
|
|
|
|
current_sub => '5.16', |
599
|
|
|
|
|
|
|
declared_refs => '5.26', |
600
|
|
|
|
|
|
|
evalbytes => '5.16', |
601
|
|
|
|
|
|
|
fc => '5.16', |
602
|
|
|
|
|
|
|
isa => '5.32', |
603
|
|
|
|
|
|
|
lexical_topic => '5.10', |
604
|
|
|
|
|
|
|
lexical_subs => '5.18', |
605
|
|
|
|
|
|
|
postderef => '5.20', |
606
|
|
|
|
|
|
|
postderef_qq => '5.20', |
607
|
|
|
|
|
|
|
refaliasing => '5.22', |
608
|
|
|
|
|
|
|
regex_sets => '5.18', |
609
|
|
|
|
|
|
|
say => '5.10', |
610
|
|
|
|
|
|
|
smartmatch => '5.10', |
611
|
|
|
|
|
|
|
signatures => '5.20', |
612
|
|
|
|
|
|
|
state => '5.10', |
613
|
|
|
|
|
|
|
switch => '5.10', |
614
|
|
|
|
|
|
|
unicode_eval => '5.16', |
615
|
|
|
|
|
|
|
unicode_strings => '5.12', |
616
|
|
|
|
|
|
|
); |
617
|
|
|
|
|
|
|
my $experimental_regexp = join('|', keys %experimental); |
618
|
|
|
|
|
|
|
sub _experimental_bundle { |
619
|
60
|
|
|
60
|
|
131
|
my ($version, $obj); |
620
|
|
|
|
|
|
|
|
621
|
|
|
|
|
|
|
shift->Document->find( sub { |
622
|
591
|
100
|
100
|
591
|
|
7944
|
return '' unless $_[1]->isa('PPI::Statement::Include') |
623
|
|
|
|
|
|
|
and $_[1]->pragma eq 'experimental'; |
624
|
|
|
|
|
|
|
|
625
|
2
|
|
|
|
|
82
|
my @child = $_[1]->schildren; |
626
|
2
|
|
|
|
|
39
|
my @args = @child[1..$#child]; # skip 'use', 'experimental' and ';' |
627
|
2
|
|
|
|
|
6
|
foreach my $arg (@args) { |
628
|
5
|
|
|
|
|
9
|
my $v = 0; |
629
|
5
|
50
|
|
|
|
22
|
$v = $1 if ($arg->content =~ /:(5\.\d+)(?:\.\d+)?/); |
630
|
5
|
100
|
|
|
|
31
|
$v = max($v, $experimental{$1}) if ($arg->content =~ /\b($experimental_regexp)\b/); |
631
|
|
|
|
|
|
|
|
632
|
5
|
100
|
50
|
|
|
189
|
if ($v and $v > ($version || 0) ) { |
|
|
|
66
|
|
|
|
|
633
|
1
|
|
|
|
|
4
|
$version = $v; |
634
|
1
|
|
|
|
|
3
|
$obj = $_[1]; |
635
|
|
|
|
|
|
|
} |
636
|
|
|
|
|
|
|
} |
637
|
2
|
|
|
|
|
6
|
return ''; |
638
|
60
|
|
|
|
|
150
|
} ); |
639
|
|
|
|
|
|
|
|
640
|
60
|
100
|
|
|
|
1053
|
return (defined($version)?"$version.0":undef, $obj); |
641
|
|
|
|
|
|
|
} |
642
|
|
|
|
|
|
|
|
643
|
|
|
|
|
|
|
my %SCHEDULED_BLOCK = |
644
|
|
|
|
|
|
|
( |
645
|
|
|
|
|
|
|
'INIT' => '5.006', |
646
|
|
|
|
|
|
|
'CHECK' => '5.006002', |
647
|
|
|
|
|
|
|
'UNITCHECK' => '5.010', |
648
|
|
|
|
|
|
|
); |
649
|
|
|
|
|
|
|
|
650
|
|
|
|
|
|
|
sub _scheduled_blocks |
651
|
|
|
|
|
|
|
{ |
652
|
60
|
|
|
60
|
|
109
|
my @versions; |
653
|
60
|
|
|
|
|
99
|
my ($version, $obj); |
654
|
|
|
|
|
|
|
|
655
|
|
|
|
|
|
|
shift->Document->find( sub { |
656
|
591
|
100
|
|
591
|
|
7016
|
$_[1]->isa('PPI::Statement::Scheduled') or return ''; |
657
|
4
|
50
|
|
|
|
16
|
($_[1]->children)[0]->isa('PPI::Token::Word') or return ''; |
658
|
4
|
|
|
|
|
43
|
my $function = (($_[1]->children)[0])->content; |
659
|
4
|
100
|
|
|
|
42
|
exists( $SCHEDULED_BLOCK{ $function }) or return ''; |
660
|
|
|
|
|
|
|
|
661
|
3
|
|
|
|
|
9
|
my $v = $SCHEDULED_BLOCK{ ($_[1]->children)[0]->content }; |
662
|
3
|
50
|
50
|
|
|
39
|
if ($v and $v > ($version || 0) ) { |
|
|
|
33
|
|
|
|
|
663
|
3
|
|
|
|
|
7
|
$version = $v; |
664
|
3
|
|
|
|
|
16
|
$obj = $_[1]; |
665
|
|
|
|
|
|
|
} |
666
|
|
|
|
|
|
|
|
667
|
3
|
|
|
|
|
8
|
return ''; |
668
|
60
|
|
|
|
|
146
|
} ); |
669
|
60
|
100
|
|
|
|
980
|
return (defined($version) ? $version : undef, $obj); |
670
|
|
|
|
|
|
|
} |
671
|
|
|
|
|
|
|
|
672
|
|
|
|
|
|
|
sub _regex { |
673
|
68
|
|
|
68
|
|
142
|
my $self = shift; |
674
|
68
|
|
|
|
|
120
|
my @versions; |
675
|
68
|
|
|
|
|
122
|
my ($version, $obj); |
676
|
|
|
|
|
|
|
$self->Document->find( sub { |
677
|
|
|
|
|
|
|
return '' unless |
678
|
606
|
100
|
|
606
|
|
8099
|
grep { $_[1]->isa($_) } |
|
1818
|
|
|
|
|
5580
|
|
679
|
|
|
|
|
|
|
qw/PPI::Token::QuoteLike::Regexp PPI::Token::Regexp::Match PPI::Token::Regexp::Substitute/; |
680
|
13
|
|
|
|
|
67
|
my $re = PPIx::Regexp->new( $_[1] ); |
681
|
13
|
|
|
|
|
51191
|
my $v = $re->perl_version_introduced; |
682
|
13
|
50
|
50
|
|
|
3933
|
if ($v and $v > ($version || 0) ) { |
|
|
|
33
|
|
|
|
|
683
|
13
|
|
|
|
|
26
|
$version = $v; |
684
|
13
|
|
|
|
|
27
|
$obj = $_[1]; |
685
|
|
|
|
|
|
|
} |
686
|
13
|
|
|
|
|
59
|
return ''; |
687
|
68
|
|
|
|
|
156
|
} ); |
688
|
68
|
|
|
|
|
2111
|
my $tr_r_version = version->new('5.013.007'); |
689
|
|
|
|
|
|
|
$self->Document->find( sub { |
690
|
606
|
100
|
|
606
|
|
7303
|
return '' unless |
691
|
|
|
|
|
|
|
$_[1]->isa(q/PPI::Token::Regexp::Transliterate/); |
692
|
2
|
50
|
50
|
|
|
17
|
if( exists $_[1]->get_modifiers->{r} |
|
|
|
33
|
|
|
|
|
693
|
|
|
|
|
|
|
&& $tr_r_version > ( $version || 0 ) |
694
|
|
|
|
|
|
|
) { |
695
|
2
|
|
|
|
|
57
|
$version = $tr_r_version; |
696
|
2
|
|
|
|
|
3
|
$obj = $_[1]; |
697
|
|
|
|
|
|
|
} |
698
|
2
|
|
|
|
|
8
|
return ''; |
699
|
68
|
|
|
|
|
213
|
} ); |
700
|
68
|
100
|
100
|
|
|
998
|
$version = undef if ($version and $version eq '5.000'); |
701
|
68
|
|
|
|
|
278
|
return ($version, $obj); |
702
|
|
|
|
|
|
|
} |
703
|
|
|
|
|
|
|
|
704
|
|
|
|
|
|
|
# Check for use re "/flags"; |
705
|
|
|
|
|
|
|
sub _re_flags { |
706
|
60
|
|
|
60
|
|
107
|
my ($version, $obj); |
707
|
|
|
|
|
|
|
shift->Document->find( sub { |
708
|
586
|
100
|
66
|
586
|
|
8014
|
return '' unless $_[1]->isa('PPI::Statement::Include') |
|
|
|
66
|
|
|
|
|
709
|
|
|
|
|
|
|
and ($_[1]->module eq 're' or $_[1]->pragma eq 're'); |
710
|
9
|
|
|
|
|
228
|
my $included = $_[1]->schild(2); |
711
|
9
|
100
|
|
|
|
231
|
my @literal = $included->can('literal') ? $included->literal() : $included->string(); |
712
|
8
|
|
|
|
|
267
|
my $v = "5.005"; |
713
|
8
|
|
|
|
|
16
|
my @flags = grep {index($_, '/') == 0} @literal; |
|
11
|
|
|
|
|
38
|
|
714
|
8
|
100
|
|
|
|
22
|
$v = '5.014' if @flags; |
715
|
|
|
|
|
|
|
$v = max $v, map { |
716
|
8
|
|
|
|
|
20
|
my $empty_regex_w_flag = "/$_"; |
|
8
|
|
|
|
|
1637
|
|
717
|
8
|
|
|
|
|
29
|
PPIx::Regexp->new( $empty_regex_w_flag )->perl_version_introduced; |
718
|
|
|
|
|
|
|
} @flags; |
719
|
8
|
50
|
50
|
|
|
12523
|
if ($v and $v > ($version || 0) ) { |
|
|
|
33
|
|
|
|
|
720
|
8
|
|
|
|
|
16
|
$version = $v; |
721
|
8
|
|
|
|
|
45
|
$obj = $_[1]; |
722
|
|
|
|
|
|
|
} |
723
|
|
|
|
|
|
|
|
724
|
60
|
|
|
|
|
144
|
} ); |
725
|
60
|
50
|
66
|
|
|
1087
|
$version = undef if ($version and $version eq '5.000'); |
726
|
60
|
|
|
|
|
159
|
return ($version, $obj); |
727
|
|
|
|
|
|
|
} |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
sub _each_argument { |
730
|
102
|
|
|
102
|
|
264
|
my ($version, $obj); |
731
|
|
|
|
|
|
|
shift->Document->find( sub { |
732
|
899
|
100
|
|
899
|
|
12449
|
$_[1]->isa('PPI::Token::Word') or return ''; |
733
|
128
|
100
|
|
|
|
329
|
$_[1]->content =~ '^(each|keys|values)$' or return ''; |
734
|
44
|
100
|
|
|
|
387
|
return '' if is_method_call($_[1]); |
735
|
42
|
|
|
|
|
1336
|
my $next = $_[1]->snext_sibling; |
736
|
42
|
100
|
|
|
|
867
|
$next = $next->schild(0)->schild(0) if $next->isa('PPI::Structure::List'); |
737
|
41
|
100
|
|
|
|
609
|
if($next->isa('PPI::Token::Cast')) { |
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
738
|
4
|
100
|
50
|
|
|
11
|
if($next->content eq '@' && 5.012 > ($version || 0)) { |
|
|
50
|
66
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
33
|
|
|
|
|
739
|
3
|
|
|
|
|
27
|
$version = 5.012; |
740
|
3
|
|
|
|
|
10
|
$obj = $_[1]->parent; |
741
|
|
|
|
|
|
|
} elsif($next->content eq '$' && 5.014 > ($version || 0)) { |
742
|
0
|
|
|
|
|
0
|
$version = 5.014; |
743
|
0
|
|
|
|
|
0
|
$obj = $_[1]->parent; |
744
|
|
|
|
|
|
|
} |
745
|
|
|
|
|
|
|
} elsif($next->isa('PPI::Token::Symbol')) { |
746
|
28
|
100
|
100
|
|
|
74
|
if($next->raw_type eq '@' && 5.012 > ($version || 0)) { |
|
|
100
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
66
|
|
|
|
|
747
|
7
|
|
|
|
|
74
|
$version = 5.012; |
748
|
7
|
|
|
|
|
19
|
$obj = $_[1]->parent; |
749
|
|
|
|
|
|
|
} elsif($next->raw_type eq '$' && 5.014 > ($version || 0)) { |
750
|
14
|
|
|
|
|
216
|
$version = 5.014; |
751
|
14
|
|
|
|
|
38
|
$obj = $_[1]->parent; |
752
|
|
|
|
|
|
|
} |
753
|
|
|
|
|
|
|
} elsif($next->isa('PPI::Token::Operator')) { # % $a |
754
|
1
|
|
|
|
|
3
|
return ''; |
755
|
|
|
|
|
|
|
} elsif($_[1]->parent->isa('PPI::Statement::Sub')) { # sub each|keys|values |
756
|
2
|
|
|
|
|
13
|
return ''; |
757
|
|
|
|
|
|
|
} else { # function call or other should be reference |
758
|
6
|
50
|
50
|
|
|
51
|
if(5.014 > ($version || 0)) { |
759
|
6
|
|
|
|
|
11
|
$version = 5.014; |
760
|
6
|
|
|
|
|
13
|
$obj = $_[1]->parent; |
761
|
|
|
|
|
|
|
} |
762
|
|
|
|
|
|
|
} |
763
|
38
|
100
|
100
|
|
|
312
|
return 1 if ($version and $version == 5.014); |
764
|
17
|
|
|
|
|
38
|
return ''; |
765
|
102
|
|
|
|
|
231
|
} ); |
766
|
102
|
100
|
|
|
|
2230
|
return (defined($version)?"$version":undef, $obj); |
767
|
|
|
|
|
|
|
} |
768
|
|
|
|
|
|
|
|
769
|
|
|
|
|
|
|
#Is string (first argument) in list (other arguments) |
770
|
|
|
|
|
|
|
sub _str_in_list { |
771
|
7
|
|
|
7
|
|
16
|
my $str = shift; |
772
|
7
|
|
|
|
|
18
|
foreach my $s (@_) { |
773
|
11
|
100
|
|
|
|
34
|
return 1 if $s eq $str; |
774
|
|
|
|
|
|
|
} |
775
|
4
|
|
|
|
|
26
|
return 0; |
776
|
|
|
|
|
|
|
} |
777
|
|
|
|
|
|
|
|
778
|
|
|
|
|
|
|
|
779
|
|
|
|
|
|
|
sub _binmode_2_arg { |
780
|
69
|
|
|
69
|
|
145
|
my ($version, $obj); |
781
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
782
|
663
|
|
|
663
|
|
7630
|
my $main_element=$_[1]; |
783
|
663
|
100
|
|
|
|
2144
|
$main_element->isa('PPI::Token::Word') or return ''; |
784
|
82
|
100
|
|
|
|
195
|
$main_element->content eq 'binmode' or return ''; |
785
|
10
|
50
|
|
|
|
65
|
return '' if is_hash_key($main_element); |
786
|
10
|
50
|
|
|
|
451
|
return '' if is_method_call($main_element); |
787
|
10
|
50
|
|
|
|
299
|
return '' if is_subroutine_name($main_element); |
788
|
10
|
50
|
|
|
|
238
|
return '' if is_included_module_name($main_element); |
789
|
10
|
50
|
|
|
|
276
|
return '' if is_package_declaration($main_element); |
790
|
10
|
|
|
|
|
225
|
my @arguments = parse_arg_list($main_element); |
791
|
10
|
100
|
|
|
|
1152
|
if ( scalar @arguments == 2 ) { |
792
|
8
|
|
|
|
|
29
|
my $arg2=$arguments[1][0]; |
793
|
8
|
100
|
|
|
|
33
|
if ( $arg2->isa('PPI::Token::Quote')) { #check second argument |
794
|
7
|
|
|
|
|
27
|
my $str = $arg2->string; |
795
|
7
|
|
|
|
|
84
|
$str =~ s/^\s+//s; |
796
|
7
|
|
|
|
|
24
|
$str =~ s/\s+$//s; |
797
|
7
|
|
|
|
|
56
|
$str =~ s/:\s+/:/g; |
798
|
7
|
100
|
100
|
|
|
23
|
if ( !_str_in_list( $str => qw/:raw :crlf/) and $str !~ /[\$\@\%]/) { |
799
|
3
|
|
|
|
|
5
|
$version = 5.008; |
800
|
3
|
|
|
|
|
7
|
$obj = $main_element; |
801
|
3
|
|
|
|
|
13
|
return 1; |
802
|
|
|
|
|
|
|
} |
803
|
|
|
|
|
|
|
} |
804
|
5
|
50
|
|
|
|
13
|
if (!$version) { |
805
|
5
|
|
|
|
|
8
|
$version = 5.006; |
806
|
5
|
|
|
|
|
9
|
$obj = $main_element; |
807
|
|
|
|
|
|
|
} |
808
|
|
|
|
|
|
|
} |
809
|
7
|
|
|
|
|
20
|
return ''; |
810
|
69
|
|
|
|
|
189
|
} ); |
811
|
69
|
|
|
|
|
1245
|
return ($version, $obj); |
812
|
|
|
|
|
|
|
} |
813
|
|
|
|
|
|
|
|
814
|
|
|
|
|
|
|
|
815
|
|
|
|
|
|
|
|
816
|
|
|
|
|
|
|
#http://perldoc.perl.org/functions/readdir.html |
817
|
|
|
|
|
|
|
#while(readdir $dh) requires perl 5.12 |
818
|
|
|
|
|
|
|
sub _while_readdir { |
819
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
820
|
474
|
100
|
|
474
|
|
6122
|
$_[1]->isa('PPI::Token::Word') or return ''; |
821
|
59
|
100
|
|
|
|
188
|
$_[1]->content eq 'while' or return ''; |
822
|
8
|
50
|
|
|
|
60
|
return '' if is_hash_key($_[1]); |
823
|
8
|
50
|
|
|
|
610
|
return '' if is_method_call($_[1]); |
824
|
8
|
100
|
|
|
|
232
|
my $e1 = $_[1]->next_sibling or return ''; |
825
|
7
|
50
|
|
|
|
144
|
if ($e1->isa('PPI::Structure::Condition')) { #while () |
826
|
7
|
|
|
|
|
25
|
my @children = $e1->children; |
827
|
7
|
|
|
|
|
45
|
$e1 = $children[0]; |
828
|
|
|
|
|
|
|
} |
829
|
7
|
50
|
|
|
|
36
|
$e1->isa('PPI::Statement::Expression') or return ''; |
830
|
7
|
|
|
|
|
21
|
my @children = $e1->schildren; |
831
|
7
|
|
|
|
|
95
|
$e1 = $children[0]; |
832
|
|
|
|
|
|
|
|
833
|
7
|
100
|
|
|
|
34
|
$e1->isa('PPI::Token::Word') or return ''; |
834
|
6
|
100
|
|
|
|
13
|
$e1->content eq 'readdir' or return ''; |
835
|
5
|
50
|
|
|
|
26
|
return 1 if @children == 1; #incorrect call |
836
|
5
|
100
|
|
|
|
14
|
return '' if @children > 2; #not only readdir |
837
|
3
|
|
|
|
|
11
|
$e1 = $children[1]; |
838
|
3
|
50
|
66
|
|
|
25
|
$e1->isa('PPI::Structure::List') or $e1->isa('PPI::Token::Symbol') or return ''; |
839
|
|
|
|
|
|
|
#readdir($dh) or readdir $dh |
840
|
|
|
|
|
|
|
|
841
|
3
|
|
|
|
|
12
|
return 1; |
842
|
44
|
|
|
44
|
|
176
|
} ); |
843
|
|
|
|
|
|
|
} |
844
|
|
|
|
|
|
|
|
845
|
|
|
|
|
|
|
sub _perl_5012_pragmas { |
846
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
847
|
|
|
|
|
|
|
$_[1]->isa('PPI::Statement::Include') |
848
|
|
|
|
|
|
|
and |
849
|
329
|
100
|
|
329
|
|
4489
|
$MATCHES{_perl_5012_pragmas}->{$_[1]->pragma} |
850
|
37
|
|
|
37
|
|
93
|
} ); |
851
|
|
|
|
|
|
|
} |
852
|
|
|
|
|
|
|
|
853
|
|
|
|
|
|
|
sub _open_temp { |
854
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
855
|
344
|
100
|
|
344
|
|
4305
|
$_[1]->isa('PPI::Statement') or return ''; |
856
|
50
|
|
|
|
|
136
|
my @children = $_[1]->children; |
857
|
|
|
|
|
|
|
#@children >= 7 or return ''; |
858
|
50
|
|
|
|
|
279
|
my $main_element = $children[0]; |
859
|
50
|
100
|
|
|
|
198
|
$main_element->isa('PPI::Token::Word') or return ''; |
860
|
29
|
100
|
|
|
|
91
|
$main_element->content eq 'open' or return ''; |
861
|
7
|
|
|
|
|
60
|
my @arguments = parse_arg_list($main_element); |
862
|
7
|
100
|
66
|
|
|
1672
|
if ( scalar @arguments == 3 and scalar(@{$arguments[2]}) == 1) { |
|
5
|
|
|
|
|
22
|
|
863
|
5
|
|
|
|
|
11
|
my $arg3 = $arguments[2][0]; |
864
|
5
|
100
|
66
|
|
|
22
|
if ($arg3->isa('PPI::Token::Word') and $arg3->content eq 'undef') { |
865
|
3
|
|
|
|
|
29
|
return 1; |
866
|
|
|
|
|
|
|
} |
867
|
|
|
|
|
|
|
} |
868
|
4
|
|
|
|
|
18
|
return ''; |
869
|
30
|
|
|
30
|
|
122
|
} ); |
870
|
|
|
|
|
|
|
} |
871
|
|
|
|
|
|
|
|
872
|
|
|
|
|
|
|
sub _open_scalar { |
873
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
874
|
348
|
100
|
|
348
|
|
4254
|
$_[1]->isa('PPI::Statement') or return ''; |
875
|
51
|
|
|
|
|
152
|
my @children = $_[1]->children; |
876
|
|
|
|
|
|
|
#@children >= 7 or return ''; |
877
|
51
|
|
|
|
|
284
|
my $main_element = $children[0]; |
878
|
51
|
100
|
|
|
|
185
|
$main_element->isa('PPI::Token::Word') or return ''; |
879
|
30
|
100
|
|
|
|
83
|
$main_element->content eq 'open' or return ''; |
880
|
8
|
|
|
|
|
67
|
my @arguments = parse_arg_list($main_element); |
881
|
8
|
100
|
|
|
|
2026
|
if ( scalar @arguments == 3) { |
882
|
6
|
|
|
|
|
16
|
my $arg3 = $arguments[2][0]; |
883
|
6
|
100
|
66
|
|
|
57
|
if ($arg3->isa('PPI::Token::Cast') and $arg3->content eq '\\') { |
884
|
4
|
|
|
|
|
30
|
return 1; |
885
|
|
|
|
|
|
|
} |
886
|
|
|
|
|
|
|
} |
887
|
4
|
|
|
|
|
18
|
return ''; |
888
|
31
|
|
|
31
|
|
160
|
} ); |
889
|
|
|
|
|
|
|
} |
890
|
|
|
|
|
|
|
|
891
|
|
|
|
|
|
|
sub _get_resulting_sigil { |
892
|
10
|
|
|
10
|
|
18
|
my $elem = shift; |
893
|
10
|
50
|
|
|
|
68
|
if ($elem->isa('PPI::Token::Cast')) { |
|
|
50
|
|
|
|
|
|
894
|
0
|
|
|
|
|
0
|
return $elem->content; |
895
|
|
|
|
|
|
|
} elsif ($elem->isa('PPI::Token::Symbol')) { |
896
|
10
|
|
|
|
|
31
|
return $elem->symbol_type; |
897
|
|
|
|
|
|
|
} else { |
898
|
0
|
|
|
|
|
0
|
return undef; |
899
|
|
|
|
|
|
|
} |
900
|
|
|
|
|
|
|
} |
901
|
|
|
|
|
|
|
|
902
|
|
|
|
|
|
|
sub _heredoc_indent { |
903
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
904
|
570
|
|
|
570
|
|
5874
|
my $main_element = $_[1]; |
905
|
570
|
100
|
|
|
|
1850
|
$main_element->isa('PPI::Token::HereDoc') or return ''; |
906
|
2
|
100
|
|
|
|
5
|
$main_element->content =~ /^\Q<<~\E/ or return ''; |
907
|
1
|
|
|
|
|
10
|
return 1; |
908
|
57
|
|
|
57
|
|
138
|
}); |
909
|
|
|
|
|
|
|
} |
910
|
|
|
|
|
|
|
|
911
|
|
|
|
|
|
|
# Postfix dereference new (and experimental) in 5.20, mainstream in 5.24. |
912
|
|
|
|
|
|
|
# THIS CODE ASSUMES PPI 1.237_001 OR ABOVE -- i.e. support for postfix |
913
|
|
|
|
|
|
|
# dereferencing. |
914
|
|
|
|
|
|
|
# |
915
|
|
|
|
|
|
|
my %postfix_deref = ( |
916
|
|
|
|
|
|
|
'$*' => \&_postfix_deref_entire, |
917
|
|
|
|
|
|
|
'@*' => \&_postfix_deref_entire, |
918
|
|
|
|
|
|
|
'$#*' => \&_postfix_deref_entire, |
919
|
|
|
|
|
|
|
'%*' => \&_postfix_deref_entire, |
920
|
|
|
|
|
|
|
'&*' => \&_postfix_deref_entire, |
921
|
|
|
|
|
|
|
'**' => \&_postfix_deref_entire, |
922
|
|
|
|
|
|
|
'@' => \&_postfix_deref_slice, |
923
|
|
|
|
|
|
|
'%' => \&_postfix_deref_slice, |
924
|
|
|
|
|
|
|
); |
925
|
|
|
|
|
|
|
|
926
|
|
|
|
|
|
|
sub _postfix_deref_slice { |
927
|
4
|
|
|
4
|
|
12
|
my ( $elem ) = @_; |
928
|
4
|
50
|
|
|
|
32
|
my $next = $elem->snext_sibling() |
929
|
|
|
|
|
|
|
or return; |
930
|
4
|
|
|
|
|
112
|
return $next->isa( 'PPI::Structure::Subscript' ); |
931
|
|
|
|
|
|
|
} |
932
|
|
|
|
|
|
|
|
933
|
|
|
|
|
|
|
sub _postfix_deref_entire { |
934
|
6
|
|
|
6
|
|
19
|
return 1; |
935
|
|
|
|
|
|
|
} |
936
|
|
|
|
|
|
|
|
937
|
|
|
|
|
|
|
sub _postfix_deref { |
938
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
939
|
509
|
|
|
509
|
|
5171
|
my $main_element=$_[1]; |
940
|
509
|
100
|
|
|
|
1696
|
$main_element->isa('PPI::Token::Cast') or return ''; |
941
|
11
|
50
|
|
|
|
96
|
my $prev = $main_element->sprevious_sibling() |
942
|
|
|
|
|
|
|
or return ''; |
943
|
11
|
100
|
66
|
|
|
355
|
return '' unless $prev->isa('PPI::Token::Operator') && |
944
|
|
|
|
|
|
|
$prev->content() eq '->'; |
945
|
10
|
50
|
|
|
|
66
|
$prev = $prev->sprevious_sibling() |
946
|
|
|
|
|
|
|
or return ''; |
947
|
10
|
50
|
50
|
|
|
276
|
return '' unless $prev->isa('PPI::Token::Symbol') && |
|
|
|
33
|
|
|
|
|
948
|
|
|
|
|
|
|
(_get_resulting_sigil($prev) || '') eq '$'; |
949
|
10
|
50
|
|
|
|
538
|
my $code = $postfix_deref{ $main_element->content() } |
950
|
|
|
|
|
|
|
or return ''; |
951
|
10
|
|
50
|
|
|
68
|
return $code->( $main_element ) || ''; |
952
|
54
|
|
|
54
|
|
182
|
} ); |
953
|
|
|
|
|
|
|
} |
954
|
|
|
|
|
|
|
|
955
|
|
|
|
|
|
|
sub _postfix_when { |
956
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
957
|
442
|
|
|
442
|
|
4664
|
my $main_element=$_[1]; |
958
|
442
|
100
|
|
|
|
1563
|
$main_element->isa('PPI::Token::Word') or return ''; |
959
|
53
|
100
|
|
|
|
167
|
$main_element->content eq 'when' or return ''; |
960
|
5
|
50
|
|
|
|
30
|
return '' if is_hash_key($main_element); |
961
|
5
|
50
|
|
|
|
409
|
return '' if is_method_call($main_element); |
962
|
5
|
50
|
|
|
|
175
|
return '' if is_subroutine_name($main_element); |
963
|
5
|
50
|
|
|
|
216
|
return '' if is_included_module_name($main_element); |
964
|
5
|
50
|
|
|
|
134
|
return '' if is_package_declaration($main_element); |
965
|
5
|
|
|
|
|
110
|
my $stmnt = $main_element->statement(); |
966
|
5
|
50
|
|
|
|
58
|
return '' if !$stmnt; |
967
|
5
|
100
|
|
|
|
19
|
return '' if $stmnt->isa('PPI::Statement::When'); |
968
|
3
|
|
|
|
|
7
|
return 1; |
969
|
41
|
|
|
41
|
|
133
|
} ); |
970
|
|
|
|
|
|
|
} |
971
|
|
|
|
|
|
|
|
972
|
|
|
|
|
|
|
sub _yada_yada_yada { |
973
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
974
|
469
|
100
|
100
|
469
|
|
6033
|
$_[1]->isa('PPI::Token::Operator') |
975
|
|
|
|
|
|
|
and $_[1]->content eq '...' or return ''; |
976
|
8
|
|
|
|
|
72
|
my @child = $_[1]->parent->schildren; |
977
|
8
|
100
|
|
|
|
122
|
@child == 1 and return 1; |
978
|
3
|
100
|
|
|
|
12
|
if (@child == 2) { |
979
|
1
|
|
|
|
|
10
|
$child[1]->isa('PPI::Token::Structure') |
980
|
|
|
|
|
|
|
} |
981
|
46
|
|
|
46
|
|
156
|
} ); |
982
|
|
|
|
|
|
|
} |
983
|
|
|
|
|
|
|
|
984
|
|
|
|
|
|
|
sub _state_declaration { |
985
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
986
|
331
|
100
|
66
|
331
|
|
4204
|
$_[1]->isa('PPI::Statement::Variable') |
987
|
|
|
|
|
|
|
and ($_[1]->children)[0]->isa('PPI::Token::Word') |
988
|
|
|
|
|
|
|
and ($_[1]->children)[0]->content eq 'state' |
989
|
34
|
|
|
34
|
|
89
|
} ); |
990
|
|
|
|
|
|
|
} |
991
|
|
|
|
|
|
|
|
992
|
|
|
|
|
|
|
sub _stacked_labels { |
993
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
994
|
0
|
0
|
|
0
|
|
0
|
$_[1]->isa('PPI::Statement::Compound') || return ''; |
995
|
0
|
0
|
|
|
|
0
|
$_[1]->schild(0)->isa('PPI::Token::Label') || return ''; |
996
|
|
|
|
|
|
|
|
997
|
0
|
|
0
|
|
|
0
|
my $next = $_[1]->snext_sibling || return ''; |
998
|
|
|
|
|
|
|
|
999
|
0
|
0
|
0
|
|
|
0
|
if ( $next->isa('PPI::Statement::Compound') |
1000
|
|
|
|
|
|
|
&& $next->schild(0)->isa('PPI::Token::Label')) { |
1001
|
0
|
|
|
|
|
0
|
return 1; |
1002
|
|
|
|
|
|
|
} |
1003
|
|
|
|
|
|
|
|
1004
|
0
|
|
|
|
|
0
|
0; |
1005
|
0
|
|
|
0
|
|
0
|
} ); |
1006
|
|
|
|
|
|
|
} |
1007
|
|
|
|
|
|
|
|
1008
|
|
|
|
|
|
|
sub _internals_svreadonly { |
1009
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1010
|
277
|
100
|
100
|
277
|
|
3997
|
$_[1]->isa('PPI::Statement') |
1011
|
|
|
|
|
|
|
and ($_[1]->children)[0]->isa('PPI::Token::Word') |
1012
|
|
|
|
|
|
|
and ($_[1]->children)[0]->content eq 'Internals::SvREADONLY' |
1013
|
27
|
|
|
27
|
|
97
|
} ); |
1014
|
|
|
|
|
|
|
} |
1015
|
|
|
|
|
|
|
|
1016
|
|
|
|
|
|
|
sub _pkg_name_version { |
1017
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1018
|
420
|
100
|
|
420
|
|
5207
|
$_[1]->isa('PPI::Statement::Package') or return ''; |
1019
|
9
|
|
|
|
|
24
|
my @child = $_[1]->schildren(); |
1020
|
9
|
50
|
|
|
|
129
|
$child[0]->isa('PPI::Token::Word') or return ''; |
1021
|
9
|
50
|
|
|
|
20
|
$child[0]->content eq 'package' or return ''; |
1022
|
9
|
50
|
|
|
|
51
|
$child[1]->isa('PPI::Token::Word') or return ''; |
1023
|
9
|
100
|
|
|
|
35
|
$child[2]->isa('PPI::Token::Number') or return ''; |
1024
|
6
|
|
|
|
|
15
|
return 1; |
1025
|
46
|
|
|
46
|
|
169
|
} ); |
1026
|
|
|
|
|
|
|
} |
1027
|
|
|
|
|
|
|
|
1028
|
|
|
|
|
|
|
sub _perl_5010_pragmas { |
1029
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1030
|
|
|
|
|
|
|
$_[1]->isa('PPI::Statement::Include') |
1031
|
|
|
|
|
|
|
and |
1032
|
255
|
100
|
|
255
|
|
3433
|
$MATCHES{_perl_5010_pragmas}->{$_[1]->pragma} |
1033
|
30
|
|
|
30
|
|
634
|
} ); |
1034
|
|
|
|
|
|
|
} |
1035
|
|
|
|
|
|
|
|
1036
|
|
|
|
|
|
|
sub _perl_5010_operators { |
1037
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1038
|
|
|
|
|
|
|
$_[1]->isa('PPI::Token::Operator') |
1039
|
|
|
|
|
|
|
and |
1040
|
364
|
100
|
|
364
|
|
4783
|
$MATCHES{_perl_5010_operators}->{$_[1]->content} |
1041
|
34
|
|
|
34
|
|
94
|
} ); |
1042
|
|
|
|
|
|
|
} |
1043
|
|
|
|
|
|
|
|
1044
|
|
|
|
|
|
|
sub _perl_5010_magic { |
1045
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1046
|
|
|
|
|
|
|
$_[1]->isa('PPI::Token::Magic') |
1047
|
|
|
|
|
|
|
and |
1048
|
339
|
100
|
|
339
|
|
4317
|
$MATCHES{_perl_5010_magic}->{$_[1]->symbol} |
1049
|
33
|
|
|
33
|
|
92
|
} ); |
1050
|
|
|
|
|
|
|
} |
1051
|
|
|
|
|
|
|
|
1052
|
|
|
|
|
|
|
sub _perl_5008_pragmas { |
1053
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1054
|
|
|
|
|
|
|
$_[1]->isa('PPI::Statement::Include') |
1055
|
|
|
|
|
|
|
and |
1056
|
203
|
100
|
|
203
|
|
2782
|
$MATCHES{_perl_5008_pragmas}->{$_[1]->pragma} |
1057
|
23
|
|
|
23
|
|
71
|
} ); |
1058
|
|
|
|
|
|
|
} |
1059
|
|
|
|
|
|
|
|
1060
|
|
|
|
|
|
|
# 5.8.3: Reading $^E now preserves $!. Previously, the C code implementing $^E did not preserve errno, so reading $^E could cause errno and therefore $! to change unexpectedly. |
1061
|
|
|
|
|
|
|
sub _bugfix_magic_errno { |
1062
|
26
|
|
|
26
|
|
651
|
my $Document = shift->Document; |
1063
|
|
|
|
|
|
|
my $element = $Document->find_first( sub { |
1064
|
291
|
|
|
291
|
|
3565
|
$_[1]->isa('PPI::Token::Magic') |
1065
|
|
|
|
|
|
|
and |
1066
|
|
|
|
|
|
|
$_[1]->symbol eq '$^E' |
1067
|
26
|
|
100
|
|
|
121
|
} ) || return undef; |
1068
|
|
|
|
|
|
|
#$^E is more rare than $!, so search for it first and return it |
1069
|
|
|
|
|
|
|
$Document->find_any( sub { |
1070
|
4
|
100
|
|
4
|
|
81
|
$_[1]->isa('PPI::Token::Magic') |
1071
|
|
|
|
|
|
|
and |
1072
|
|
|
|
|
|
|
$_[1]->symbol eq '$!' |
1073
|
2
|
50
|
|
|
|
109
|
} ) || return ''; |
1074
|
2
|
|
|
|
|
101
|
return $element; |
1075
|
|
|
|
|
|
|
} |
1076
|
|
|
|
|
|
|
|
1077
|
|
|
|
|
|
|
# utf8::is_utf requires 5.8.1 unlike the rest of utf8 |
1078
|
|
|
|
|
|
|
sub _is_utf8 { |
1079
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1080
|
279
|
100
|
|
279
|
|
3766
|
$_[1]->isa('PPI::Token::Word') or return ''; |
1081
|
31
|
50
|
|
|
|
146
|
$_[1] eq 'utf8::is_utf' or return ''; |
1082
|
0
|
|
|
|
|
0
|
return 1; |
1083
|
24
|
|
|
24
|
|
73
|
} ); |
1084
|
|
|
|
|
|
|
} |
1085
|
|
|
|
|
|
|
|
1086
|
|
|
|
|
|
|
# version->new(5.005.004); |
1087
|
|
|
|
|
|
|
sub _unquoted_versions { |
1088
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1089
|
279
|
100
|
|
279
|
|
3359
|
$_[1]->isa('PPI::Token::Number') or return ''; |
1090
|
17
|
50
|
|
|
|
51
|
$_[1]->{_subtype} or return ''; |
1091
|
0
|
0
|
|
|
|
0
|
$_[1]->{_subtype} eq 'base256' or return ''; |
1092
|
0
|
0
|
|
|
|
0
|
my $stmt = $_[1]->parent or return ''; |
1093
|
0
|
0
|
|
|
|
0
|
my $braces = $stmt->parent or return ''; |
1094
|
0
|
0
|
|
|
|
0
|
$braces->isa('PPI::Structure') or return ''; |
1095
|
0
|
0
|
|
|
|
0
|
$braces->braces eq '()' or return ''; |
1096
|
0
|
0
|
|
|
|
0
|
my $new = $braces->previous_sibling or return ''; |
1097
|
0
|
0
|
|
|
|
0
|
$new->isa('PPI::Token::Word') or return ''; |
1098
|
0
|
0
|
|
|
|
0
|
$new->content eq 'new' or return ''; |
1099
|
0
|
0
|
|
|
|
0
|
my $method = $new->previous_sibling or return ''; |
1100
|
0
|
0
|
|
|
|
0
|
$method->isa('PPI::Token::Operator') or return ''; |
1101
|
0
|
0
|
|
|
|
0
|
$method->content eq '->' or return ''; |
1102
|
0
|
0
|
|
|
|
0
|
my $_class = $method->previous_sibling or return ''; |
1103
|
0
|
0
|
|
|
|
0
|
$_class->isa('PPI::Token::Word') or return ''; |
1104
|
0
|
0
|
|
|
|
0
|
$_class->content eq 'version' or return ''; |
1105
|
0
|
|
|
|
|
0
|
1; |
1106
|
24
|
|
|
24
|
|
72
|
} ); |
1107
|
|
|
|
|
|
|
} |
1108
|
|
|
|
|
|
|
|
1109
|
|
|
|
|
|
|
sub _pragma_utf8 { |
1110
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1111
|
217
|
100
|
100
|
217
|
|
3343
|
$_[1]->isa('PPI::Statement::Include') |
|
|
|
66
|
|
|
|
|
|
|
|
66
|
|
|
|
|
1112
|
|
|
|
|
|
|
and |
1113
|
|
|
|
|
|
|
( |
1114
|
|
|
|
|
|
|
($_[1]->module and $_[1]->module eq 'utf8') |
1115
|
|
|
|
|
|
|
or |
1116
|
|
|
|
|
|
|
($_[1]->pragma and $_[1]->pragma eq 'utf8') |
1117
|
|
|
|
|
|
|
) |
1118
|
|
|
|
|
|
|
# This used to be just pragma(), but that was buggy in PPI v1.118 |
1119
|
21
|
|
|
21
|
|
75
|
} ); |
1120
|
|
|
|
|
|
|
} |
1121
|
|
|
|
|
|
|
|
1122
|
|
|
|
|
|
|
# Check for the use of 'use constant { ... }' |
1123
|
|
|
|
|
|
|
sub _constant_hash { |
1124
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1125
|
244
|
100
|
66
|
244
|
|
3626
|
$_[1]->isa('PPI::Statement::Include') |
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
1126
|
|
|
|
|
|
|
and |
1127
|
|
|
|
|
|
|
$_[1]->type |
1128
|
|
|
|
|
|
|
and |
1129
|
|
|
|
|
|
|
$_[1]->type eq 'use' |
1130
|
|
|
|
|
|
|
and |
1131
|
|
|
|
|
|
|
$_[1]->module eq 'constant' |
1132
|
|
|
|
|
|
|
and |
1133
|
|
|
|
|
|
|
$_[1]->schild(2)->isa('PPI::Structure') |
1134
|
23
|
|
|
23
|
|
75
|
} ); |
1135
|
|
|
|
|
|
|
} |
1136
|
|
|
|
|
|
|
|
1137
|
|
|
|
|
|
|
# You can't localize a soft reference |
1138
|
|
|
|
|
|
|
sub _local_soft_reference { |
1139
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1140
|
228
|
100
|
|
228
|
|
2833
|
$_[1]->isa('PPI::Statement::Variable') or return ''; |
1141
|
3
|
100
|
|
|
|
27
|
$_[1]->type eq 'local' or return ''; |
1142
|
|
|
|
|
|
|
|
1143
|
|
|
|
|
|
|
# The second child should be a '$' cast. |
1144
|
2
|
|
|
|
|
108
|
my @child = $_[1]->schildren; |
1145
|
2
|
50
|
|
|
|
40
|
scalar(@child) >= 2 or return ''; |
1146
|
2
|
50
|
|
|
|
9
|
$child[1]->isa('PPI::Token::Cast') or return ''; |
1147
|
2
|
50
|
|
|
|
8
|
$child[1]->content eq '$' or return ''; |
1148
|
|
|
|
|
|
|
|
1149
|
|
|
|
|
|
|
# The third child should be a block |
1150
|
2
|
50
|
|
|
|
15
|
$child[2]->isa('PPI::Structure::Block') or return ''; |
1151
|
|
|
|
|
|
|
|
1152
|
|
|
|
|
|
|
# Inside the block should be a string in a statement |
1153
|
2
|
50
|
|
|
|
14
|
my $statement = $child[2]->schild(0) or return ''; |
1154
|
2
|
50
|
|
|
|
44
|
$statement->isa('PPI::Statement') or return ''; |
1155
|
2
|
50
|
|
|
|
5
|
my $inside = $statement->schild(0) or return ''; |
1156
|
2
|
50
|
|
|
|
29
|
$inside->isa('PPI::Token::Quote') or return ''; |
1157
|
|
|
|
|
|
|
|
1158
|
|
|
|
|
|
|
# This is indeed a localized soft reference |
1159
|
2
|
|
|
|
|
5
|
return 1; |
1160
|
23
|
|
|
23
|
|
678
|
} ); |
1161
|
|
|
|
|
|
|
} |
1162
|
|
|
|
|
|
|
|
1163
|
|
|
|
|
|
|
# Carp.pm did not have a $VERSION in 5.6.2 |
1164
|
|
|
|
|
|
|
# Therefore, even "use Carp 0" imposes a 5.8.0 dependency. |
1165
|
|
|
|
|
|
|
sub _use_carp_version { |
1166
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1167
|
226
|
100
|
|
226
|
|
2872
|
$_[1]->isa('PPI::Statement::Include') or return ''; |
1168
|
9
|
50
|
|
|
|
36
|
$_[1]->module eq 'Carp' or return ''; |
1169
|
|
|
|
|
|
|
|
1170
|
0
|
|
|
|
|
0
|
my $version = $_[1]->module_version; |
1171
|
0
|
|
0
|
|
|
0
|
return !! ( defined $version and length "$version" ); |
1172
|
21
|
|
|
21
|
|
95
|
} ); |
1173
|
|
|
|
|
|
|
} |
1174
|
|
|
|
|
|
|
|
1175
|
|
|
|
|
|
|
# Double-diamond operator. |
1176
|
|
|
|
|
|
|
# Detecting this requires at least PPI 1.252 |
1177
|
|
|
|
|
|
|
sub _double_diamond_operator { |
1178
|
|
|
|
|
|
|
shift->Document->find_first( sub { |
1179
|
561
|
100
|
|
561
|
|
6817
|
$_[1]->isa('PPI::Token::QuoteLike::Readline') or return ''; |
1180
|
2
|
100
|
|
|
|
9
|
$_[1]->content eq '<<>>' or return ''; |
1181
|
1
|
|
|
|
|
10
|
return 1; |
1182
|
59
|
|
|
59
|
|
190
|
} ); |
1183
|
|
|
|
|
|
|
} |
1184
|
|
|
|
|
|
|
|
1185
|
|
|
|
|
|
|
##################################################################### |
1186
|
|
|
|
|
|
|
# Support Functions |
1187
|
|
|
|
|
|
|
|
1188
|
|
|
|
|
|
|
# Let sub be a function, object method, and static method |
1189
|
|
|
|
|
|
|
sub _SELF { |
1190
|
298
|
|
|
298
|
|
460
|
my $param = shift; |
1191
|
298
|
100
|
|
|
|
1981
|
if ( _INSTANCE($param->[0], 'Perl::MinimumVersion') ) { |
1192
|
296
|
|
|
|
|
1001
|
return shift @$param; |
1193
|
|
|
|
|
|
|
} |
1194
|
2
|
50
|
33
|
|
|
16
|
if ( |
1195
|
|
|
|
|
|
|
_CLASS($param->[0]) |
1196
|
|
|
|
|
|
|
and |
1197
|
|
|
|
|
|
|
$param->[0]->isa('Perl::MinimumVersion') |
1198
|
|
|
|
|
|
|
) { |
1199
|
2
|
|
|
|
|
47
|
my $class = shift @$param; |
1200
|
2
|
|
|
|
|
6
|
my $options = shift @$param; |
1201
|
2
|
|
|
|
|
9
|
return $class->new($options); |
1202
|
|
|
|
|
|
|
} |
1203
|
0
|
|
|
|
|
0
|
Perl::MinimumVersion->new(shift @$param); |
1204
|
|
|
|
|
|
|
} |
1205
|
|
|
|
|
|
|
|
1206
|
|
|
|
|
|
|
# Find the maximum version, ignoring problems |
1207
|
|
|
|
|
|
|
sub _max { |
1208
|
18
|
100
|
100
|
18
|
|
1135
|
defined $_[0] and "$_[0]" eq PMV and shift; |
1209
|
|
|
|
|
|
|
|
1210
|
|
|
|
|
|
|
# Filter and prepare for a Schwartian maximum |
1211
|
|
|
|
|
|
|
my @valid = map { |
1212
|
26
|
50
|
|
|
|
117
|
[ $_, $_->isa('Perl::MinimumVersion::Reason') ? $_->version : $_ ] |
1213
|
|
|
|
|
|
|
} grep { |
1214
|
18
|
50
|
|
|
|
61
|
_INSTANCE($_, 'Perl::MinimumVersion::Reason') |
|
36
|
100
|
|
|
|
560
|
|
1215
|
|
|
|
|
|
|
or |
1216
|
|
|
|
|
|
|
_INSTANCE($_, 'version') |
1217
|
|
|
|
|
|
|
} @_ or return ''; |
1218
|
|
|
|
|
|
|
|
1219
|
|
|
|
|
|
|
# Find the maximum |
1220
|
12
|
|
|
|
|
30
|
my $max = shift @valid; |
1221
|
12
|
|
|
|
|
25
|
foreach my $it ( @valid ) { |
1222
|
14
|
100
|
|
|
|
62
|
$max = $it if $it->[1] > $max->[1]; |
1223
|
|
|
|
|
|
|
} |
1224
|
|
|
|
|
|
|
|
1225
|
12
|
|
|
|
|
130
|
return $max->[0]; |
1226
|
|
|
|
|
|
|
} |
1227
|
|
|
|
|
|
|
|
1228
|
|
|
|
|
|
|
1; |
1229
|
|
|
|
|
|
|
|
1230
|
|
|
|
|
|
|
=pod |
1231
|
|
|
|
|
|
|
|
1232
|
|
|
|
|
|
|
=head1 BUGS |
1233
|
|
|
|
|
|
|
|
1234
|
|
|
|
|
|
|
B does a reasonable job of catching the best-known |
1235
|
|
|
|
|
|
|
explicit version dependencies. |
1236
|
|
|
|
|
|
|
|
1237
|
|
|
|
|
|
|
B it is exceedingly easy to add a new syntax check, so if you |
1238
|
|
|
|
|
|
|
find something this is missing, copy and paste one of the existing |
1239
|
|
|
|
|
|
|
5 line checking functions, modify it to find what you want, and report it |
1240
|
|
|
|
|
|
|
to rt.cpan.org, along with the version needed. |
1241
|
|
|
|
|
|
|
|
1242
|
|
|
|
|
|
|
I don't even need an entire diff... just the function and version. |
1243
|
|
|
|
|
|
|
|
1244
|
|
|
|
|
|
|
=head1 TO DO |
1245
|
|
|
|
|
|
|
|
1246
|
|
|
|
|
|
|
B |
1247
|
|
|
|
|
|
|
|
1248
|
|
|
|
|
|
|
- Perl 5.10 operators and language structures |
1249
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1250
|
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- Three-argument open |
1251
|
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1252
|
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B |
1253
|
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1254
|
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B |
1255
|
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1256
|
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_while_readdir for postfix while without brackets |
1257
|
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1258
|
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B
|
1259
|
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|
C, C<...>, and C |
1260
|
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1261
|
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=head1 SUPPORT |
1262
|
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|
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|
1263
|
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|
All bugs should be filed via the CPAN bug tracker at |
1264
|
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|
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|
1265
|
|
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|
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L |
1266
|
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1267
|
|
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|
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|
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For other issues, or commercial enhancement or support, contact the author. |
1268
|
|
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|
|
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|
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1269
|
|
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|
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|
|
=head1 AUTHORS |
1270
|
|
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|
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1271
|
|
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|
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|
|
Adam Kennedy Eadamk@cpan.orgE |
1272
|
|
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1273
|
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|
|
=head1 SEE ALSO |
1274
|
|
|
|
|
|
|
|
1275
|
|
|
|
|
|
|
L - the command-line script for running C |
1276
|
|
|
|
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|
|
on your code. |
1277
|
|
|
|
|
|
|
|
1278
|
|
|
|
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|
|
L - another module which does the same thing. |
1279
|
|
|
|
|
|
|
It's a lot faster, but only supports Perl 5.8.1+. |
1280
|
|
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|
|
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|
|
1281
|
|
|
|
|
|
|
L, L, L |
1282
|
|
|
|
|
|
|
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1283
|
|
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|
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|
|
=head1 REPOSITORY |
1284
|
|
|
|
|
|
|
|
1285
|
|
|
|
|
|
|
L |
1286
|
|
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1287
|
|
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|
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|
|
=head1 COPYRIGHT |
1288
|
|
|
|
|
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|
|
1289
|
|
|
|
|
|
|
Copyright 2005 - 2014 Adam Kennedy. |
1290
|
|
|
|
|
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|
|
1291
|
|
|
|
|
|
|
This program is free software; you can redistribute |
1292
|
|
|
|
|
|
|
it and/or modify it under the same terms as Perl itself. |
1293
|
|
|
|
|
|
|
|
1294
|
|
|
|
|
|
|
The full text of the license can be found in the |
1295
|
|
|
|
|
|
|
LICENSE file included with this module. |
1296
|
|
|
|
|
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|
|
1297
|
|
|
|
|
|
|
=cut |