Mercurial > pub > Impl
annotate Lib/IMPL/lang.pm @ 379:a471e8b77544
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| author | cin |
|---|---|
| date | Thu, 16 Jan 2014 18:10:50 +0400 |
| parents | d5c8b955bf8d |
| children |
| 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); |
| 280 | 9 use Carp qw(carp); |
| 164 | 10 |
| 274 | 11 our @EXPORT = qw(&is &isclass &typeof); |
| 167 | 12 our %EXPORT_TAGS = ( |
| 194 | 13 base => [ |
| 14 qw( | |
| 15 &is | |
| 16 &clone | |
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17 &isclass |
| 274 | 18 &typeof |
| 194 | 19 ) |
| 20 ], | |
| 167 | 21 |
| 194 | 22 declare => [ |
| 23 qw( | |
| 24 &public | |
| 25 &protected | |
| 26 &private | |
| 27 &property | |
| 28 &static | |
| 29 &property | |
| 278 | 30 &_direct |
| 213 | 31 &ACCESS_PUBLIC |
| 32 &ACCESS_PROTECTED | |
| 33 &ACCESS_PRIVATE | |
| 34 &PROP_GET | |
| 35 &PROP_SET | |
| 36 &PROP_OWNERSET | |
| 37 &PROP_LIST | |
| 38 &PROP_ALL | |
| 230 | 39 &PROP_RO |
| 40 &PROP_RW | |
| 278 | 41 &PROP_DIRECT |
| 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($$) { | |
| 280 | 68 carp "A typename can't be undefined" unless $_[1]; |
| 371 | 69 blessed($_[0]) and $_[0]->isa( $_[1] ); |
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70 } |
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71 |
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72 sub isclass { |
| 280 | 73 carp "A typename can't be undefined" unless $_[1]; |
| 371 | 74 local $@; |
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75 eval {not ref $_[0] and $_[0]->isa( $_[1] ) }; |
| 167 | 76 } |
| 77 | |
| 274 | 78 sub typeof(*) { |
| 371 | 79 local $@; |
| 315 | 80 eval { $_[0]->_typeof } || blessed($_[0]) || ref($_[0]); |
| 274 | 81 } |
| 82 | |
| 167 | 83 sub public($) { |
| 278 | 84 my $info = shift; |
| 85 $info->{access} = ACCESS_PUBLIC; | |
| 86 my $implementor = delete $info->{implementor}; | |
| 87 $implementor->Implement($info); | |
| 167 | 88 } |
| 89 | |
| 90 sub private($) { | |
| 278 | 91 my $info = shift; |
| 92 $info->{access} = ACCESS_PRIVATE; | |
| 93 my $implementor = delete $info->{implementor}; | |
| 94 $implementor->Implement($info); | |
| 167 | 95 } |
| 96 | |
| 97 sub protected($) { | |
| 278 | 98 my $info = shift; |
| 99 $info->{access} = ACCESS_PROTECTED; | |
| 100 my $implementor = delete $info->{implementor}; | |
| 101 $implementor->Implement($info); | |
| 102 } | |
| 103 | |
| 104 sub _direct ($) { | |
| 105 my $info = shift; | |
| 106 $info->{direct} = 1; | |
| 107 return $info; | |
| 164 | 108 } |
| 109 | |
| 278 | 110 sub property($$) { |
| 111 my ($propName,$attributes) = @_; | |
| 112 | |
| 113 $attributes = { | |
| 114 get => $attributes & PROP_GET, | |
| 115 set => $attributes & PROP_SET, | |
| 116 isList => $attributes & PROP_LIST | |
| 117 } unless ref $attributes; | |
| 118 | |
| 119 my $class = caller; | |
| 120 | |
| 121 return hashMerge ( | |
| 122 $attributes, | |
| 194 | 123 { |
| 278 | 124 implementor => $class->ClassPropertyImplementor, |
| 125 name => $propName, | |
| 126 class => scalar(caller), | |
| 194 | 127 } |
| 128 ); | |
| 167 | 129 } |
| 130 | |
| 131 sub static($$) { | |
| 194 | 132 my ( $name, $value ) = @_; |
| 133 my $class = caller; | |
| 134 $class->static_accessor( $name, $value ); | |
| 167 | 135 } |
| 136 | |
| 137 sub equals { | |
| 194 | 138 if (defined $_[0]) { |
| 139 return 0 if (not defined $_[1]); | |
| 140 | |
| 141 return $_[0] == $_[1]; | |
| 142 } else { | |
| 143 return 0 if defined $_[1]; | |
| 144 | |
| 145 return 1; | |
| 146 } | |
| 167 | 147 } |
| 148 | |
| 149 sub equals_s { | |
| 194 | 150 if (defined $_[0]) { |
| 151 return 0 if (not defined $_[1]); | |
| 152 | |
| 153 return $_[0] eq $_[1]; | |
| 154 } else { | |
| 155 return 0 if defined $_[1]; | |
| 156 | |
| 157 return 1; | |
| 158 } | |
| 167 | 159 } |
| 160 | |
| 168 | 161 sub hashDiff { |
| 194 | 162 my ($src,$dst) = @_; |
| 163 | |
| 164 $dst = $dst ? { %$dst } : {} ; | |
| 165 $src ||= {}; | |
| 166 | |
| 167 my %result; | |
| 168 | |
| 169 foreach my $key ( keys %$src ) { | |
| 170 if (exists $dst->{$key}) { | |
| 171 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key}); | |
| 172 delete $dst->{$key}; | |
| 173 } else { | |
| 174 $result{"-$key"} = 1; | |
| 175 } | |
| 176 } | |
| 177 | |
| 178 $result{"+$_"} = $dst->{$_} foreach keys %$dst; | |
| 179 | |
| 180 return \%result; | |
| 168 | 181 } |
| 182 | |
| 183 sub hashMerge { | |
| 210 | 184 return hashApply( { %{$_[0] || {}} }, $_[1] ); |
| 168 | 185 } |
| 186 | |
| 187 sub hashApply { | |
| 194 | 188 my ($target,$diff) = @_; |
| 189 | |
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190 return $target unless ref $diff eq 'HASH'; |
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191 |
| 194 | 192 while ( my ($key,$value) = each %$diff) { |
| 193 $key =~ /^(\+|-)?(.*)$/; | |
| 194 my $op = $1 || '+'; | |
| 195 $key = $2; | |
| 196 | |
| 197 if ($op eq '-') { | |
| 198 delete $target->{$key}; | |
| 199 } else { | |
| 200 $target->{$key} = $value; | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 return $target; | |
| 168 | 205 } |
| 206 | |
| 207 sub hashCompare { | |
| 194 | 208 my ($l,$r,$cmp) = @_; |
| 209 | |
| 210 $cmp ||= \&equals_s; | |
| 211 | |
| 212 return 0 unless scalar keys %$l == scalar keys %$r; | |
| 213 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l; | |
| 214 | |
| 215 return 1; | |
| 168 | 216 } |
| 217 | |
| 174 | 218 sub hashParse { |
| 194 | 219 my ($s,$p,$d) = @_; |
| 220 | |
| 221 $p = $p ? qr/$p/ : qr/\n+/; | |
| 222 $d = $d ? qr/$d/ : qr/\s*=\s*/; | |
| 223 | |
| 224 return { | |
| 225 map split($d,$_,2), split($p,$s) | |
| 226 }; | |
| 174 | 227 } |
| 228 | |
| 229 sub hashSave { | |
| 194 | 230 my ($hash,$p,$d) = @_; |
| 231 | |
| 232 return "" unless ref $hash eq 'HASH'; | |
| 233 | |
| 234 $p ||= "\n"; | |
| 235 $d ||= " = "; | |
| 236 | |
| 237 return | |
| 238 join( | |
| 239 $p, | |
| 240 map( | |
| 241 join( | |
| 242 $d, | |
| 243 $_, | |
| 244 $hash->{$_} | |
| 245 ), | |
| 246 keys %$hash | |
| 247 ) | |
| 248 ); | |
| 174 | 249 } |
| 250 | |
| 167 | 251 1; |