/[cvs]/nfo/perl/libs/Data/Mungle/Transform/Deep.pm
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revision 1.10 by joko, Thu Feb 20 20:48:00 2003 UTC revision 1.11 by joko, Thu Feb 20 21:13:54 2003 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ---------------------------------------------------------------------------  ## ---------------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.11  2003/02/20 21:13:54  joko
6    ##  - removed implementation of deep_copy2 - get this from the Pitonyak namespace (now cloned to repository)
7    ##
8  ##  Revision 1.10  2003/02/20 20:48:00  joko  ##  Revision 1.10  2003/02/20 20:48:00  joko
9  ##  - refactored lots of code to Data::Code::Ref  ##  - refactored lots of code to Data::Code::Ref
10  ##  + alternative 'deep_copy' implementation  ##  + alternative 'deep_copy' implementation
# Line 441  sub deep_copy1 { Line 444  sub deep_copy1 {
444  # ACK's go to Andrew Pitonyak  # ACK's go to Andrew Pitonyak
445  # Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org)  # Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org)
446  # please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html  # please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html
 sub deep_copy2 {  
   
     # if not defined then return it  
     return undef if $#_ < 0 || !defined( $_[0] );  
   
     # if not a reference then return the parameter  
     return $_[0] if !ref( $_[0] );  
     my $obj = shift;  
     if ( UNIVERSAL::isa( $obj, 'SCALAR' ) ) {  
         my $temp = deep_copy2($$obj);  
         return \$temp;  
     }  
     elsif ( UNIVERSAL::isa( $obj, 'HASH' ) ) {  
         my $temp_hash = {};  
         foreach my $key ( keys %$obj ) {  
             if ( !defined( $obj->{$key} ) || !ref( $obj->{$key} ) ) {  
                 $temp_hash->{$key} = $obj->{$key};  
             }  
             else {  
                 $temp_hash->{$key} = deep_copy2( $obj->{$key} );  
             }  
         }  
         return $temp_hash;  
     }  
     elsif ( UNIVERSAL::isa( $obj, 'ARRAY' ) ) {  
         my $temp_array = [];  
         foreach my $array_val (@$obj) {  
             if ( !defined($array_val) || !ref($array_val) ) {  
                 push ( @$temp_array, $array_val );  
             }  
             else {  
                 push ( @$temp_array, deep_copy2($array_val) );  
             }  
         }  
         return $temp_array;  
     }  
   
     # ?? I am uncertain about this one  
     elsif ( UNIVERSAL::isa( $obj, 'REF' ) ) {  
         my $temp = deep_copy2($$obj);  
         return \$temp;  
     }  
   
     # I guess that it is either CODE, GLOB or LVALUE  
     else {  
         return $obj;  
     }  
 }  
   
447  sub deep_copy {  sub deep_copy {
448    deep_copy2(@_);    Pitonyak::deep_copy(@_);
449  }  }
450    
451  1;  1;
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