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Man Pages


Manual Reference Pages  -  PPI::TOKEN::NUMBER (3)

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NAME

PPI::Token::Number - Token class for a number

CONTENTS

SYNOPSIS



  $n = 1234;       # decimal integer
  $n = 0b1110011;  # binary integer
  $n = 01234;      # octal integer
  $n = 0x1234;     # hexadecimal integer
  $n = 12.34e-56;  # exponential notation ( currently not working )



INHERITANCE



  PPI::Token::Number
  isa PPI::Token
      isa PPI::Element



DESCRIPTION

The PPI::Token::Number class is used for tokens that represent numbers, in the various types that Perl supports.

METHODS

    base

The base method is provided by all of the ::Number subclasses. This is 10 for decimal, 16 for hexadecimal, 2 for binary, etc.

    literal

Return the numeric value of this token.

CAVEATS

Compared to Perl, the number tokenizer is too liberal about allowing underscores anywhere. For example, the following is a syntax error in Perl, but is allowed in PPI:



   0_b10



TO DO

- Treat v-strings as binary strings or barewords, not as base-256
numbers

- Break out decimal integers into their own subclass?

- Implement literal()

SUPPORT

See the support section in the main module.

AUTHOR

Adam Kennedy <adamk@cpan.org>

COPYRIGHT

Copyright 2001 - 2011 Adam Kennedy.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.

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perl v5.20.3 PPI::TOKEN::NUMBER (3) 2014-11-11

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