PPI::Token::Number(3) User Contributed Perl Documentation PPI::Token::Number(3)

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

$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 )

isa PPI::Token
    isa PPI::Element

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

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

Return the numeric value of this token.

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:


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

- Break out decimal integers into their own subclass?

- Implement literal()

See the support section in the main module.

Adam Kennedy <adamk@cpan.org>

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.

2022-07-23 perl v5.36.0