Mercurial > pub > Impl
annotate Lib/IMPL/Object/Abstract.pm @ 276:8a5da17d7ef9
*IMPL::Class refactoring property definition mechanism (incomplete).
author | sergey |
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date | Thu, 31 Jan 2013 17:37:44 +0400 |
parents | ad93c9f4dd93 |
children | c6d0f889ef87 |
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49 | 1 package IMPL::Object::Abstract; |
2 use strict; | |
3 use warnings; | |
4 | |
166 | 5 use parent qw(IMPL::Class::Meta); |
49 | 6 |
7 our $MemoryLeakProtection; | |
8 my $Cleanup = 0; | |
9 | |
10 my %cacheCTOR; | |
11 | |
12 my $t = 0; | |
13 sub cache_ctor { | |
14 my $class = shift; | |
15 | |
16 no strict 'refs'; | |
17 my @sequence; | |
18 | |
19 my $refCTORS = *{"${class}::CTOR"}{HASH}; | |
20 | |
21 foreach my $super ( @{"${class}::ISA"} ) { | |
194 | 22 my $superSequence = $cacheCTOR{$super} || cache_ctor($super); |
23 | |
24 my $mapper = $refCTORS ? $refCTORS->{$super} : undef; | |
25 if (ref $mapper eq 'CODE') { | |
26 if ($mapper == *_pass_through_mapper{CODE}) { | |
27 push @sequence,@$superSequence; | |
28 } else { | |
29 push @sequence, sub { | |
30 my $this = shift; | |
31 $this->$_($mapper->(@_)) foreach @$superSequence; | |
32 } if @$superSequence; | |
33 } | |
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34 } elsif ($mapper and not ref $mapper and $mapper eq '@_') { |
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35 push @sequence,@$superSequence; |
194 | 36 } else { |
37 warn "Unsupported mapper type, in '$class' for the super class '$super'" if $mapper; | |
38 push @sequence, sub { | |
39 my $this = shift; | |
40 $this->$_() foreach @$superSequence; | |
41 } if @$superSequence; | |
42 } | |
49 | 43 } |
44 | |
45 push @sequence, *{"${class}::CTOR"}{CODE} if *{"${class}::CTOR"}{CODE}; | |
46 | |
47 $cacheCTOR{$class} = \@sequence; | |
48 return \@sequence; | |
49 } | |
50 | |
90 | 51 sub dump_ctor { |
194 | 52 my ($self) = @_; |
53 $self = ref $self || $self; | |
54 | |
55 warn "dumping $self .ctor"; | |
56 warn "$_" foreach @{$cacheCTOR{$self}||[]}; | |
90 | 57 } |
58 | |
49 | 59 sub callCTOR { |
60 my $self = shift; | |
61 my $class = ref $self; | |
62 | |
63 $self->$_(@_) foreach @{$cacheCTOR{$class} || cache_ctor($class)}; | |
64 } | |
65 | |
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66 sub _init_dtor { |
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67 my ($class) = @_; |
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68 |
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69 no strict 'refs'; |
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70 |
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71 # avoid warnings for classes without destructors |
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72 no warnings 'once'; |
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73 |
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74 my @dtors; |
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75 |
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76 my @hierarchy = ($class); |
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77 my %visited; |
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78 |
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79 while(my $subclass = shift @hierarchy) { |
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80 if(*{"${subclass}::DTOR"}{CODE}) { |
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81 push @dtors, *{"${subclass}::DTOR"}{CODE}; |
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82 } |
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83 |
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84 push @hierarchy, @{"${subclass}::ISA"}; |
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85 } |
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86 |
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87 if (@dtors) { |
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88 |
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89 return *{"${class}::callDTOR"} = sub { |
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90 my ($self) = @_; |
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91 my $selfClass = ref $self; |
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92 if ($selfClass ne $class) { |
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93 goto &{$selfClass->_init_dtor()}; |
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94 } else { |
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95 map $_->($self), @dtors; |
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96 } |
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97 } |
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98 |
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99 } else { |
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100 return *{"${class}::callDTOR"} = sub { |
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101 my $self = ref $_[0]; |
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102 |
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103 goto &{$self->_init_dtor()} unless $self eq $class; |
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104 } |
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105 } |
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106 } |
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107 |
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108 __PACKAGE__->_init_dtor(); |
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109 |
49 | 110 sub toString { |
111 my $self = shift; | |
112 | |
113 return (ref $self || $self); | |
114 } | |
115 | |
122 | 116 sub typeof { |
194 | 117 ref $_[0] || $_[0]; |
93 | 118 } |
119 | |
49 | 120 sub isDisposed { |
121 0; | |
122 } | |
123 | |
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124 sub DESTROY { |
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125 shift->callDTOR(); |
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126 } |
49 | 127 |
128 sub END { | |
129 $Cleanup = 1; | |
130 } | |
131 | |
174 | 132 sub _pass_through_mapper { |
49 | 133 @_; |
134 } | |
135 | |
136 sub PassArgs { | |
174 | 137 \&_pass_through_mapper; |
49 | 138 } |
139 | |
140 sub PassThroughArgs { | |
141 my $class = shift; | |
142 $class = ref $class || $class; | |
143 no strict 'refs'; | |
144 no warnings 'once'; | |
174 | 145 ${"${class}::CTOR"}{$_} = \&_pass_through_mapper foreach @{"${class}::ISA"}; |
49 | 146 } |
147 | |
148 package self; | |
149 | |
150 our $AUTOLOAD; | |
151 sub AUTOLOAD { | |
108 | 152 goto &{caller(). substr $AUTOLOAD,6}; |
49 | 153 } |
154 | |
155 package supercall; | |
156 | |
157 our $AUTOLOAD; | |
158 sub AUTOLOAD { | |
159 my $sub; | |
160 my $methodName = substr $AUTOLOAD,11; | |
161 no strict 'refs'; | |
162 $sub = $_->can($methodName) and $sub->(@_) foreach @{caller().'::ISA'}; | |
163 } | |
164 | |
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165 1; |
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166 |
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167 __END__ |
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168 |
49 | 169 =pod |
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170 =head1 SYNOPSIS |
49 | 171 |
172 package MyBaseObject; | |
166 | 173 use parent qw(IMPL::Object::Abstract); |
49 | 174 |
175 sub new { | |
176 # own implementation of the new opeator | |
177 } | |
178 | |
179 sub surrogate { | |
180 # own implementation of the surrogate operator | |
181 } | |
182 | |
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183 =head1 DESCRIPTION |
49 | 184 |
180 | 185 Реализация механизма вызова конструкторов и других вспомогательных вещей, кроме операторов |
186 создания экземпляров. | |
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187 |
49 | 188 =cut |