|Devel::Cover::Truth_Table(3pm)||User Contributed Perl Documentation||Devel::Cover::Truth_Table(3pm)|
NAME¶Devel::Cover::Truth_Table - Truth tables for coverage objects.
use Devel::Cover::Truth_Table; # $a || $b my $or_tt = Devel::Cover::Truth_Table->new_primitive('or_3', 0, 1, 1); # $c && $d my $and_tt = Devel::Cover::Truth_Table->new_primitive('and_3', 1, 0, 1); # merge contents of $and_tt into right column of $or_tt, to create # $a || ($c && $d) $or_tt->right_merge($and_tt); # get a (sorted) textual representation my @text = $or_tt->sort->text; print "$_\n" foreach @text; __END__ A B C |exp|hit -------------- 0 0 X | 0 |--- 0 1 0 | 0 |--- 0 1 1 | 1 |+++ 1 X X | 1 |+++ --------------
DESCRIPTION¶This module provides methods for creating and merging conditional primitives ("$a && $b", "$c || $d", etc.) into more complex composite expressions.
new_primitive($op, @coverage)¶Create a new truth table based on one of the built-in primitives, which are the subclasses of Devel::Cover::DB::Condition. $op is one of the following:
- "and" or "&&" with three conditional paths.
- "or" or "||" with three conditional paths.
- "or" or "||" with two conditional paths. (i.e., when the right hand side of the expression is a constant)
- "xor" with four conditional paths.
@coverage is a list booleans identifying which of the possible paths have been covered.
sort()¶Sorts a truth table (in place) and returns the sorted object.
text()¶Format a truth table to an array of strings for printing.
html()¶Format a truth table in HTML.
percentage()¶Determines the proportion of possible conditions that have coverage.
right_merge($sub_table)¶Merge entries from $sub_table into right column of table.
left_merge($sub_table)¶Merge entries from $sub_table into left column of table.
BUGS¶None that I'm aware of...
LICENSE¶Copyright 2002 Michael Carman <firstname.lastname@example.org>
This software is free. It is licensed under the same terms as Perl itself. The latest version should be available from: http://www.pjcj.net