SYNOPSIS

     use Data::CSel qw(csel);
     use Data::CSel::WrapStruct qw(wrap_struct);
    
     my $data = [
         0,
         1,
         [2, ["two","dua"], {url=>"http://example.com/two.jpg"}, ["even","prime"]],
         3,
         [4, ["four","empat"], {}, ["even"]],
     ];
    
     my $tree = wrap_struct($data);
     my @nodes = csel(":root > * > *:nth-child(4) > *", $tree);
     my @tags = map { $_->value } @nodes; # -> ("even", "prime", "even")

    Arrays are wrapped in a Data::CSel::WrapStruct::Array, hashes in a
    Data::CSel::WrapStruct::Hash, and so on. So if you are using type
    selectors, you might want to add Data::CSel::WrapStruct into
    class_prefixes for convenience:

     my @hashes = map {$_->value} csel({class_prefixes=>["Data::CSel::WrapStruct"]}, "Hash", $tree);
     # -> ({url=>"http://example.com/two.jpg"}, {})

    The wrapper objects provide some methods, e.g.:

     my @empty_hashes = map {$_->value} csel({class_prefixes=>["Data::CSel::WrapStruct"]}, "Hash[length=0]", $tree);
     # -> ({})

    Refer to their respective documentation for the list of methods
    available.

    Some more examples:

     [map {$_->value} csel({class_prefixes=>["Data::CSel::WrapStruct"]}, "Scalar[value >= 3]")]
     # -> (3, 4)

DESCRIPTION

    This module provides wrap_struct() which creates a tree of objects from
    a generic data structure. You can then perform node selection using
    Data::CSel's csel().

    You can retrieve the original value of data items by calling value()
    method on the tree nodes.

FUNCTIONS

    None exported by default, but exportable.

 wrap_struct($data) => tree

    Wrap a data structure using a tree of objects.

    Currently cannot handle recursive structure.

SEE ALSO

    Data::CSel