NAME

       AtteanX::API::Lexer - Role defining common functionality for lexers.

VERSION

       This document describes AtteanX::API::Lexer version 0.019

DESCRIPTION

       The AtteanX::API::Lexer role provides a common interface and implementation for lexer
       implementations, allowing line-based buffer filling, and consuming of characters, constant
       strings, and fixed-length buffers.

ATTRIBUTES

       "file"
       "linebuffer"
       "line"
       "column"
       "buffer"
       "start_column"
       "start_line"

METHODS

       "fill_buffer"
           Fills the buffer with a new line from the underlying filehandle.

       "check_for_bom"
           Remove a BOM character if one appears at the start of the buffer.

       "get_char_safe( $char )"
           Consume the single character $char from the buffer.  Throw an error if $char is not at
           the start of the buffer.

       "get_char( $char )"
           Consume and return a single character from the buffer.

       "peek_char( $char )"
           Return a single character from the start of the buffer.

       "read_word( $word )"
           Consume the string $word from the start of the buffer.  Throw an error if $word is not
           at the start of the buffer.

       "read_length( $length )"
           Consume and return $length characters  from the start of the buffer.

BUGS

       Please report any bugs or feature requests to through the GitHub web interface at
       <https://github.com/kasei/attean/issues>.

SEE ALSO

AUTHOR

       Gregory Todd Williams  "<gwilliams@cpan.org>"

COPYRIGHT

       Copyright (c) 2014--2018 Gregory Todd Williams.  This program is free software; you can
       redistribute it and/or modify it under the same terms as Perl itself.