NAME

Module::Extract::Use - Pull out the modules a module uses

SYNOPSIS

        use Module::Extract::Use;

        my $extor = Module::Extract::Use->new;

        my @modules = $extor->get_modules( $file );
        if( $extor->error ) { ... }

        my $details = $extor->get_modules_with_details( $file );
        foreach my $detail ( @$details ) {
                printf "%s %s imports %s\n",
                        $detail->module, $detail->version,
                        join ' ', @{ $detail->imports }
                }

DESCRIPTION

Extract the names of the modules used in a file using a static analysis. Since this module does not run code, it cannot find dynamic uses of modules, such as eval "require $class".

new

Makes an object. The object doesn't do anything just yet, but you need it to call the methods.

init

Set up the object. You shouldn't need to call this yourself.

get_modules( FILE )

Returns a list of namespaces explicity use-d in FILE. Returns undef if the file does not exist or if it can't parse the file.

Each used namespace is only in the list even if it is used multiple times in the file. The order of the list does not correspond to anything so don't use the order to infer anything.

get_modules_with_details( FILE )

Returns a list of hash references, one reference for each namespace explicitly use-d in FILE. Each reference has keys for:

        namespace - the namespace, always defined
        version   - defined if a module version was specified
        imports   - an array reference to the import list
        pragma    - true if the module thinks this namespace is a pragma

Each used namespace is only in the list even if it is used multiple times in the file. The order of the list does not correspond to anything so don't use the order to infer anything.

error