From 28ce07061ebc5c4769908853934784ed526be387 Mon Sep 17 00:00:00 2001
From: moro <moro>
Date: Wed, 12 Mar 2003 16:53:59 +0000
Subject: [PATCH] add set operations.

---
 CHISE.pm |   34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/CHISE.pm b/CHISE.pm
index cff017e..8eebbda 100644
--- a/CHISE.pm
+++ b/CHISE.pm
@@ -1,12 +1,16 @@
 #
 # CHISE.pm by Shigeki Moro
-# $Id: CHISE.pm,v 1.2 2003-02-23 09:17:19 moro Exp $
+# $Id: CHISE.pm,v 1.3 2003-03-12 16:53:59 moro Exp $
 #
 package CHISE;
 
 use strict;
 use BerkeleyDB;
 
+our ($EXCLUSIVE, $HAVE_INTERSECTION, $PROPER_SUBSET, $PROPER_SUPERSET, $EQSET);
+($EXCLUSIVE, $HAVE_INTERSECTION, $PROPER_SUBSET, $PROPER_SUPERSET, $EQSET)
+  = (1, 2, 3, 4, 5);
+
 my $DB_HOME = '/usr/local/lib/xemacs-21.4.10/i686-pc-linux/char-db';
 
 my %alias = ();
@@ -111,7 +115,33 @@ for my $attrname (keys %alias) {
 #}
 
 sub compare {
-  # ø½Š²¡å­—オブジェクトと比ø½Š‘Š
+  # ø½Š²¡å­—オブジェクトどうしを比ø½Š‘Šã—て、
+  # ø½ŠŸ›åˆã®é‡ãªã‚Šð¯ ‘合をø½Š²¿ã™ã€‚
+  my($a, $b) = @_;
+  my($aonly, $bonly, $common) = (0, 0, 0);
+  for my $i (&cup(keys %$a, keys %$b)) {
+    if ($a->{$i} eq $b->{$i}) {
+      $common++;
+    } else {
+      $aonly++ if (exists $a->{$i});
+      $bonly++ if (exists $b->{$i});
+    }
+  }
+  if ($common == 0) {
+    return $EXCLUSIVE; # ø»‚´¦ä»–
+  } elsif ($aonly == 0 and $bonly == 0) {
+    return $EQSET; # ø½Š’…全一致
+  } elsif ($aonly == 0) {
+    return $PROPER_SUBSET; # $aは$bのø½Š¢žø½Š±¿ø»‚¸™ø½ŠŸ›åˆ
+  } elsif ($bonly == 0) {
+    return $PROPER_SUPERSET; # $bは$aのø½Š¢žø½Š±¿ø»‚¸™ø½ŠŸ›åˆ
+  } else {
+    return $HAVE_INTERSECTION;
+  }
+}
+
+sub rate_of_coincidence {
+  # ø½Š²¡å­—オブジェクトどうしの属性の一致ø½Š¸‰ã‚’出す。
   my($a, $b) = @_;
   my($all_attr, $common_attr) = (0, 0);
   for my $i (&cup(keys %$a, keys %$b)) {
-- 
1.7.10.4