/ 
Pistachio-0.10
River stage zero No dependents
/ Pistachio::Token::Transformer::Rule

NAME

Pistachio::Token::Transformer::Rule - express a token transformer rule as an object

VERSION

version 0.10

SYNOPSIS

my $rule = Pistachio::Token::Transformer::Rule->new(
    type => 'Word',
    prec => [['Word::Reserved', 'package']],
    succ => [['Structure', ';']],
    into => 'Word::Package',
);

print $rule->type  # Word
print $rule->into  # Word::Package
print $rule->value # (Undef)

print join ', ', @{$rule->prec}; # Word::Reserved, package
print join ', ', @{$rule->succ}; # Structure, ;


$rule = Pistachio::Token::Transformer::Rule->new(
    type => 'Symbol',
    val  => sub {shift =~ /^&/},
    into => 'Symbol::Sub'
);

print $rule->value->('&call_sub') # 1 (True)
print $rule->value->('wtf&')      #   (False)

AUTHOR

Joel Dalley <joeldalley@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Joel Dalley.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.