/ 
Rakudo-Star-2012.08_000
2 ++
/ Parrot::H2inc

NAME

Parrot::H2inc - Subroutines used in tools/build/h2inc.pl

DESCRIPTION

This package exports on demand only four subroutines used in tools/build/h2inc.pl.

SUBROUTINES

parse_file()

  • Arguments

        $directive = parse_file($in_file, $out_file);

    List of 2 elements: string holding name of incoming file; string holding name of outgoing file.

  • Return Value

    If successful, returns a hash reference.

perform_directive()

  • Arguments

        $defs_ref = perform_directive($directive);

    Single hash reference (which is the return value from a successful run of parse_file().

  • Return Value

    Array reference.

const_to_parrot()

  • Arguments

        $gen = join "\n", const_to_parrot(@defs);

    List.

  • Return Value

    String.

const_to_perl()

  • Arguments

        $gen = join "\n", const_to_perl(@defs);

    List.

  • Return Value

    String.

transform_name()

  • Arguments

        transform_name( sub { $prefix . $_[0] }, @_ );

    List of two or more elements, the first element of which is a subroutine reference.

  • Return Value

    List which is a mapping of the transformations executed by the first argument upon the remaining arguments.

prepend_prefix()

  • Arguments

        @defs = prepend_prefix $d->{prefix}, @{ $d->{defs} };

    List of two or more elements, the first element of which is a string.

  • Return Value

    List.

generate_text()

  • Argument

        $generated_text = generate_text($directive, \@defs);

    List of two arguments: Directive hashref; reference to array of definitions.

  • Return Value

    String holding main text to be printed to new file.

  • Argument

        print_generated_file( {
        in      => $in_file,
        out     => $out_file,
        script  => $0,
        gen     => $generated_text,
    } );

    Hash reference. Elements pertain to file being read, file being created, calling program (typically, tools/build/h2inc.pl) and string of text to be printed to file.

  • Return Value

    Implicitly returns true upon success.