Mercurial > pub > Impl
annotate Lib/IMPL/lang.pm @ 275:6253872024a4
*refactoring IMPL::Class
| author | cin |
|---|---|
| date | Thu, 31 Jan 2013 02:18:31 +0400 |
| parents | 8d36073411b1 |
| children | 4ddb27ff4a0b |
| rev | line source |
|---|---|
| 164 | 1 package IMPL::lang; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 165 | 5 use parent qw(Exporter); |
| 164 | 6 use IMPL::_core::version; |
| 173 | 7 use IMPL::clone qw(clone); |
| 274 | 8 use Scalar::Util qw(blessed); |
| 164 | 9 |
| 167 | 10 require IMPL::Class::PropertyInfo; |
| 164 | 11 |
| 274 | 12 our @EXPORT = qw(&is &isclass &typeof); |
| 167 | 13 our %EXPORT_TAGS = ( |
| 194 | 14 base => [ |
| 15 qw( | |
| 16 &is | |
| 17 &clone | |
|
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18 &isclass |
| 274 | 19 &typeof |
| 194 | 20 ) |
| 21 ], | |
| 167 | 22 |
| 194 | 23 declare => [ |
| 24 qw( | |
| 25 &public | |
| 26 &protected | |
| 27 &private | |
| 28 &virtual | |
| 29 &property | |
| 30 &static | |
| 31 &property | |
| 213 | 32 &ACCESS_PUBLIC |
| 33 &ACCESS_PROTECTED | |
| 34 &ACCESS_PRIVATE | |
| 35 &PROP_GET | |
| 36 &PROP_SET | |
| 37 &PROP_OWNERSET | |
| 38 &PROP_LIST | |
| 39 &PROP_ALL | |
| 230 | 40 &PROP_RO |
| 41 &PROP_RW | |
| 194 | 42 ) |
| 43 ], | |
| 44 compare => [ | |
| 45 qw( | |
| 46 &equals | |
| 47 &equals_s | |
| 48 &hashCompare | |
| 49 ) | |
| 50 ], | |
| 51 hash => [ | |
| 52 qw( | |
| 53 &hashApply | |
| 54 &hashMerge | |
| 55 &hashDiff | |
| 56 &hashCompare | |
| 57 &hashParse | |
| 58 &hashSave | |
| 59 ) | |
| 60 ] | |
| 167 | 61 ); |
| 62 | |
| 63 our @EXPORT_OK = keys %{ { map (($_,1) , map (@{$_}, values %EXPORT_TAGS) ) } }; | |
| 64 | |
| 230 | 65 use IMPL::Const qw(:all); |
| 164 | 66 |
| 67 sub is($$) { | |
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68 eval {ref $_[0] and $_[0]->isa( $_[1] ) }; |
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69 } |
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70 |
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71 sub isclass { |
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72 eval {not ref $_[0] and $_[0]->isa( $_[1] ) }; |
| 167 | 73 } |
| 74 | |
| 274 | 75 sub typeof(*) { |
| 76 eval { $_[0]->typeof } || blessed($_[0]); | |
| 77 } | |
| 78 | |
| 167 | 79 sub virtual($) { |
| 194 | 80 $_[0]->Virtual(1); |
| 81 $_[0]; | |
| 167 | 82 } |
| 83 | |
| 84 sub public($) { | |
| 275 | 85 $_[0]->access(ACCESS_PUBLIC); |
| 194 | 86 $_[0]->Implement; |
| 87 $_[0]; | |
| 167 | 88 } |
| 89 | |
| 90 sub private($) { | |
| 275 | 91 $_[0]->access(ACCESS_PRIVATE); |
| 194 | 92 $_[0]->Implement; |
| 93 $_[0]; | |
| 167 | 94 } |
| 95 | |
| 96 sub protected($) { | |
| 275 | 97 $_[0]->access(ACCESS_PROTECTED); |
| 194 | 98 $_[0]->Implement; |
| 99 $_[0]; | |
| 164 | 100 } |
| 101 | |
| 167 | 102 sub property($$;$) { |
| 194 | 103 my ( $propName, $mutators, $attributes ) = @_; |
| 104 my $Info = new IMPL::Class::PropertyInfo( | |
| 105 { | |
| 275 | 106 name => $propName, |
| 107 mutators => $mutators, | |
| 108 class => scalar(caller), | |
| 109 attributes => $attributes | |
| 194 | 110 } |
| 111 ); | |
| 112 return $Info; | |
| 167 | 113 } |
| 114 | |
| 115 sub static($$) { | |
| 194 | 116 my ( $name, $value ) = @_; |
| 117 my $class = caller; | |
| 118 $class->static_accessor( $name, $value ); | |
| 167 | 119 } |
| 120 | |
| 121 sub equals { | |
| 194 | 122 if (defined $_[0]) { |
| 123 return 0 if (not defined $_[1]); | |
| 124 | |
| 125 return $_[0] == $_[1]; | |
| 126 } else { | |
| 127 return 0 if defined $_[1]; | |
| 128 | |
| 129 return 1; | |
| 130 } | |
| 167 | 131 } |
| 132 | |
| 133 sub equals_s { | |
| 194 | 134 if (defined $_[0]) { |
| 135 return 0 if (not defined $_[1]); | |
| 136 | |
| 137 return $_[0] eq $_[1]; | |
| 138 } else { | |
| 139 return 0 if defined $_[1]; | |
| 140 | |
| 141 return 1; | |
| 142 } | |
| 167 | 143 } |
| 144 | |
| 168 | 145 sub hashDiff { |
| 194 | 146 my ($src,$dst) = @_; |
| 147 | |
| 148 $dst = $dst ? { %$dst } : {} ; | |
| 149 $src ||= {}; | |
| 150 | |
| 151 my %result; | |
| 152 | |
| 153 foreach my $key ( keys %$src ) { | |
| 154 if (exists $dst->{$key}) { | |
| 155 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key}); | |
| 156 delete $dst->{$key}; | |
| 157 } else { | |
| 158 $result{"-$key"} = 1; | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 $result{"+$_"} = $dst->{$_} foreach keys %$dst; | |
| 163 | |
| 164 return \%result; | |
| 168 | 165 } |
| 166 | |
| 167 sub hashMerge { | |
| 210 | 168 return hashApply( { %{$_[0] || {}} }, $_[1] ); |
| 168 | 169 } |
| 170 | |
| 171 sub hashApply { | |
| 194 | 172 my ($target,$diff) = @_; |
| 173 | |
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174 return $target unless ref $diff eq 'HASH'; |
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175 |
| 194 | 176 while ( my ($key,$value) = each %$diff) { |
| 177 $key =~ /^(\+|-)?(.*)$/; | |
| 178 my $op = $1 || '+'; | |
| 179 $key = $2; | |
| 180 | |
| 181 if ($op eq '-') { | |
| 182 delete $target->{$key}; | |
| 183 } else { | |
| 184 $target->{$key} = $value; | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 return $target; | |
| 168 | 189 } |
| 190 | |
| 191 sub hashCompare { | |
| 194 | 192 my ($l,$r,$cmp) = @_; |
| 193 | |
| 194 $cmp ||= \&equals_s; | |
| 195 | |
| 196 return 0 unless scalar keys %$l == scalar keys %$r; | |
| 197 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l; | |
| 198 | |
| 199 return 1; | |
| 168 | 200 } |
| 201 | |
| 174 | 202 sub hashParse { |
| 194 | 203 my ($s,$p,$d) = @_; |
| 204 | |
| 205 $p = $p ? qr/$p/ : qr/\n+/; | |
| 206 $d = $d ? qr/$d/ : qr/\s*=\s*/; | |
| 207 | |
| 208 return { | |
| 209 map split($d,$_,2), split($p,$s) | |
| 210 }; | |
| 174 | 211 } |
| 212 | |
| 213 sub hashSave { | |
| 194 | 214 my ($hash,$p,$d) = @_; |
| 215 | |
| 216 return "" unless ref $hash eq 'HASH'; | |
| 217 | |
| 218 $p ||= "\n"; | |
| 219 $d ||= " = "; | |
| 220 | |
| 221 return | |
| 222 join( | |
| 223 $p, | |
| 224 map( | |
| 225 join( | |
| 226 $d, | |
| 227 $_, | |
| 228 $hash->{$_} | |
| 229 ), | |
| 230 keys %$hash | |
| 231 ) | |
| 232 ); | |
| 174 | 233 } |
| 234 | |
| 167 | 235 1; |