NAME

PYX::Stack - Processing PYX data or file and process element stack.

SYNOPSIS

 use PYX::Stack;

 my $obj = PYX::Stack->new(%parameters);
 $obj->parse($pyx, $out);
 $obj->parse_file($input_file, $out);
 $obj->parse_handler($input_file_handler, $out);

METHODS

new

 my $obj = PYX::Stack->new(%parameters);

Constructor.

• bad_end

  Check bad end of element. If set, print error on unopened end of element.

  Default value is 0.

• output_handler

  Output handler.

  Default value is \*STDOUT.

• verbose

  Verbose flag. If set, each start element prints information to 'output_handler'.

  Default value is 0.

Returns instance of object.

parse

 $obj->parse($pyx, $out);

Parse PYX text or array of PYX text. If $out not present, use 'output_handler'.

Returns undef.

parse_file

 $obj->parse_file($input_file, $out);

Parse file with PYX data. If $out not present, use 'output_handler'.

Returns undef.

parse_handler

 $obj->parse_handler($input_file_handler, $out);

Parse PYX defined by handler. If $out not present, use 'output_handler'.

Returns undef.

ERRORS

 new():
         From Class::Utils::set_params():
                 Unknown parameter '%s'.

 parse():
         Bad end of element.
                 Element: %s
         Stack has some elements.

 parse_file():
         Bad end of element.
                 Element: %s
         Stack has some elements.

 parse_handler():
         Bad end of element.
                 Element: %s
         Stack has some elements.

EXAMPLE1

 use strict;
 use warnings;

 use PYX::Stack;

 # Example data.
 my $pyx = <<'END';
 (begin
 (middle
 (end
 -data
 )end
 )middle
 )begin
 END

 # PYX::Stack object.
 my $obj = PYX::Stack->new(
         'verbose' => 1,
 );

 # Parse.
 $obj->parse($pyx);

 # Output:
 # begin
 # begin/middle
 # begin/middle/end
 # begin/middle
 # begin

EXAMPLE2

 use strict;
 use warnings;

 use Error::Pure;
 use PYX::Stack;

 # Error output.
 $Error::Pure::TYPE = 'PrintVar';

 # Example data.
 my $pyx = <<'END';
 (begin
 (middle
 (end
 -data
 )middle
 )begin
 END

 # PYX::Stack object.
 my $obj = PYX::Stack->new;

 # Parse.
 $obj->parse($pyx);

 # Output:
 # PYX::Stack: Stack has some elements.

EXAMPLE3

 use strict;
 use warnings;

 use Error::Pure;
 use PYX::Stack;

 # Error output.
 $Error::Pure::TYPE = 'PrintVar';

 # Example data.
 my $pyx = <<'END';
 (begin
 (middle
 -data
 )end
 )middle
 )begin
 END

 # PYX::Stack object.
 my $obj = PYX::Stack->new(
         'bad_end' => 1,
 );

 # Parse.
 $obj->parse($pyx);

 # Output:
 # PYX::Stack: Bad end of element.
 # Element: end

DEPENDENCIES

Class::Utils, Error::Pure, PYX::Parser.

SEE ALSO

Task::PYX

Install the PYX modules.

REPOSITORY

https://github.com/michal-josef-spacek/PYX-Stack

AUTHOR

Michal Josef Špaček mailto:skim@cpan.org

http://skim.cz

LICENSE AND COPYRIGHT

© 2011-2023 Michal Josef Špaček

BSD 2-Clause License

VERSION

0.06

cpanm PYX::Stack

perl -MCPAN -e shell
install PYX::Stack