/ 
Language-Expr-0.21
River stage three • 4 direct dependents • 701 total dependents
/ Language::Expr::Interpreter::Default

NAME

Language::Expr::Interpreter::Default - A default interpreter for Language::Expr

VERSION

version 0.21

SYNOPSIS

use Language::Expr::Interpreter::Default;
my $itp = Language::Expr::Interpreter::Default->new;
$itp->vars->{a} = 'A';
say $itp->eval(q["$a b" . "c"]); # "A b c"

DESCRIPTION

Interprets Language::Expr expression. Some notes:

  • Uses boolean module.

    Comparison like '1 > 1' and '

  • Follows Perl's notion of true and false.

    That is, this expression ' "" || "0" || 2 ' will result to 2 because Perl thinks "" and "0" are false.

ATTRIBUTES

vars => {NAME => VAL, ...}

Store variables.

funcs => {NAME => CODEREF, ...}

List known functions.

level => INT

Current recursion level.

METHODS

BUGS/TODOS

Currently subexpression (map/grep/usort) doesn't work yet.

AUTHOR

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Steven Haryanto.

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