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

NAME  SYNOPSIS  INHERITANCE  DESCRIPTION  METHODS  base  literal  CAVEATS  TO DO  SUPPORT  AUTHOR  COPYRIGHT 

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NAME

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

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 <[email protected]>

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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