X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBM%2FDeep%2FArray.pm;h=247d7307c3998c747cde8262928e830e6c1afde4;hb=2ba14e04118fbfa4f41947ac9273b97ca1cb78e2;hp=e60c152bcbc43dd86c662a59a2cfa749b4309078;hpb=151e00777a6e5ff803b5456075042d257dbcd4fc;p=dbsrgits%2FDBM-Deep.git

diff --git a/lib/DBM/Deep/Array.pm b/lib/DBM/Deep/Array.pm
index e60c152..247d730 100644
--- a/lib/DBM/Deep/Array.pm
+++ b/lib/DBM/Deep/Array.pm
@@ -3,9 +3,9 @@ package DBM::Deep::Array;
 use 5.006_000;
 
 use strict;
-use warnings;
+use warnings FATAL => 'all';
 
-our $VERSION = q(1.0001);
+our $VERSION = $DBM::Deep::VERSION;
 
 # This is to allow DBM::Deep::Array to handle negative indices on
 # its own. Otherwise, Perl would intercept the call to negative
@@ -20,16 +20,7 @@ sub _get_self {
     eval { local $SIG{'__DIE__'}; tied( @{$_[0]} ) } || $_[0]
 }
 
-sub _repr { shift;[ @_ ] }
-
-sub _import {
-    my $self = shift;
-    my ($struct) = @_;
-
-    $self->push( @$struct );
-
-    return 1;
-}
+sub _repr { [] }
 
 sub TIEARRAY {
     my $class = shift;
@@ -44,9 +35,10 @@ sub FETCH {
     my $self = shift->_get_self;
     my ($key) = @_;
 
-    $self->lock( $self->LOCK_SH );
+    $self->lock_shared;
 
     if ( !defined $key ) {
+        $self->unlock;
         DBM::Deep->_throw_error( "Cannot use an undefined array index." );
     }
     elsif ( $key =~ /^-?\d+$/ ) {
@@ -74,11 +66,12 @@ sub STORE {
     my $self = shift->_get_self;
     my ($key, $value) = @_;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $size;
     my $idx_is_numeric;
     if ( !defined $key ) {
+        $self->unlock;
         DBM::Deep->_throw_error( "Cannot use an undefined array index." );
     }
     elsif ( $key =~ /^-?\d+$/ ) {
@@ -114,9 +107,10 @@ sub EXISTS {
     my $self = shift->_get_self;
     my ($key) = @_;
 
-    $self->lock( $self->LOCK_SH );
+    $self->lock_shared;
 
     if ( !defined $key ) {
+        $self->unlock;
         DBM::Deep->_throw_error( "Cannot use an undefined array index." );
     }
     elsif ( $key =~ /^-?\d+$/ ) {
@@ -143,11 +137,13 @@ sub EXISTS {
 sub DELETE {
     my $self = shift->_get_self;
     my ($key) = @_;
+    warn "ARRAY::DELETE($self,$key)\n" if DBM::Deep::DEBUG;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $size = $self->FETCHSIZE;
     if ( !defined $key ) {
+        $self->unlock;
         DBM::Deep->_throw_error( "Cannot use an undefined array index." );
     }
     elsif ( $key =~ /^-?\d+$/ ) {
@@ -175,20 +171,20 @@ sub DELETE {
     return $rv;
 }
 
-# Now that we have a real Reference sector, we should store arrayzize there. However,
-# arraysize needs to be transactionally-aware, so a simple location to store it isn't
-# going to work.
+# Now that we have a real Reference sector, we should store arrayzize there.
+# However, arraysize needs to be transactionally-aware, so a simple location to
+# store it isn't going to work.
 sub FETCHSIZE {
     my $self = shift->_get_self;
 
-    $self->lock( $self->LOCK_SH );
+    $self->lock_shared;
 
-    my $SAVE_FILTER = $self->_storage->{filter_fetch_value};
-    $self->_storage->{filter_fetch_value} = undef;
+    my $SAVE_FILTER = $self->_engine->storage->{filter_fetch_value};
+    $self->_engine->storage->{filter_fetch_value} = undef;
 
     my $size = $self->FETCH('length') || 0;
 
-    $self->_storage->{filter_fetch_value} = $SAVE_FILTER;
+    $self->_engine->storage->{filter_fetch_value} = $SAVE_FILTER;
 
     $self->unlock;
 
@@ -199,14 +195,14 @@ sub STORESIZE {
     my $self = shift->_get_self;
     my ($new_length) = @_;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
-    my $SAVE_FILTER = $self->_storage->{filter_store_value};
-    $self->_storage->{filter_store_value} = undef;
+    my $SAVE_FILTER = $self->_engine->storage->{filter_store_value};
+    $self->_engine->storage->{filter_store_value} = undef;
 
     my $result = $self->STORE('length', $new_length, 'length');
 
-    $self->_storage->{filter_store_value} = $SAVE_FILTER;
+    $self->_engine->storage->{filter_store_value} = $SAVE_FILTER;
 
     $self->unlock;
 
@@ -216,7 +212,7 @@ sub STORESIZE {
 sub POP {
     my $self = shift->_get_self;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $length = $self->FETCHSIZE();
 
@@ -237,7 +233,7 @@ sub POP {
 sub PUSH {
     my $self = shift->_get_self;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $length = $self->FETCHSIZE();
 
@@ -251,44 +247,59 @@ sub PUSH {
     return $length;
 }
 
+# XXX This really needs to be something more direct within the file, not a
+# fetch and re-store. -RobK, 2007-09-20
+sub _move_value {
+    my $self = shift;
+    my ($old_key, $new_key) = @_;
+
+    return $self->_engine->make_reference( $self, $old_key, $new_key );
+}
+
 sub SHIFT {
     my $self = shift->_get_self;
+    warn "SHIFT($self)\n" if DBM::Deep::DEBUG;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $length = $self->FETCHSIZE();
 
-    if ($length) {
-        my $content = $self->FETCH( 0 );
+    if ( !$length ) {
+        $self->unlock;
+        return;
+    }
 
+    my $content = $self->DELETE( 0 );
+
+    # Unless the deletion above has cleared the array ...
+    if ( $length > 1 ) {
         for (my $i = 0; $i < $length - 1; $i++) {
-            $self->STORE( $i, $self->FETCH($i + 1) );
+            $self->_move_value( $i+1, $i );
         }
+
         $self->DELETE( $length - 1 );
+    }
 
-        $self->unlock;
+    $self->unlock;
 
-        return $content;
-    }
-    else {
-        $self->unlock;
-        return;
-    }
+    return $content;
 }
 
 sub UNSHIFT {
     my $self = shift->_get_self;
     my @new_elements = @_;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $length = $self->FETCHSIZE();
     my $new_size = scalar @new_elements;
 
     if ($length) {
         for (my $i = $length - 1; $i >= 0; $i--) {
-            $self->STORE( $i + $new_size, $self->FETCH($i) );
+            $self->_move_value( $i, $i+$new_size );
         }
+
+        $self->STORESIZE( $length + $new_size );
     }
 
     for (my $i = 0; $i < $new_size; $i++) {
@@ -303,7 +314,7 @@ sub UNSHIFT {
 sub SPLICE {
     my $self = shift->_get_self;
 
-    $self->lock( $self->LOCK_EX );
+    $self->lock_exclusive;
 
     my $length = $self->FETCHSIZE();
 
@@ -335,12 +346,13 @@ sub SPLICE {
     if ( $new_size != $splice_length ) {
         if ($new_size > $splice_length) {
             for (my $i = $length - 1; $i >= $offset + $splice_length; $i--) {
-                $self->STORE( $i + ($new_size - $splice_length), $self->FETCH($i) );
+                $self->_move_value( $i, $i + ($new_size - $splice_length) );
             }
+            $self->STORESIZE( $length + $new_size - $splice_length );
         }
         else {
             for (my $i = $offset + $splice_length; $i < $length; $i++) {
-                $self->STORE( $i + ($new_size - $splice_length), $self->FETCH($i) );
+                $self->_move_value( $i, $i + ($new_size - $splice_length) );
             }
             for (my $i = 0; $i < $splice_length - $new_size; $i++) {
                 $self->DELETE( $length - 1 );
@@ -366,12 +378,9 @@ sub SPLICE {
 
 # We don't need to populate it, yet.
 # It will be useful, though, when we split out HASH and ARRAY
-sub EXTEND {
-    ##
-    # Perl will call EXTEND() when the array is likely to grow.
-    # We don't care, but include it because it gets called at times.
-    ##
-}
+# Perl will call EXTEND() when the array is likely to grow.
+# We don't care, but include it because it gets called at times.
+sub EXTEND {}
 
 sub _copy_node {
     my $self = shift;
@@ -379,21 +388,29 @@ sub _copy_node {
 
     my $length = $self->length();
     for (my $index = 0; $index < $length; $index++) {
-        my $value = $self->get($index);
-        $self->_copy_value( \$db_temp->[$index], $value );
+        $self->_copy_value( \$db_temp->[$index], $self->get($index) );
     }
 
     return 1;
 }
 
-##
-# Public method aliases
-##
-sub length { (shift)->FETCHSIZE(@_) }
-sub pop { (shift)->POP(@_) }
-sub push { (shift)->PUSH(@_) }
-sub unshift { (shift)->UNSHIFT(@_) }
-sub splice { (shift)->SPLICE(@_) }
+sub _clear {
+    my $self = shift;
+
+    my $size = $self->FETCHSIZE;
+    for my $key ( 0 .. $size - 1 ) {
+        $self->_engine->delete_key( $self, $key, $key );
+    }
+    $self->STORESIZE( 0 );
+
+    return;
+}
+
+sub length  { (shift)->FETCHSIZE(@_) }
+sub pop     { (shift)->POP(@_)       }
+sub push    { (shift)->PUSH(@_)      }
+sub unshift { (shift)->UNSHIFT(@_)   }
+sub splice  { (shift)->SPLICE(@_)    }
 
 # This must be last otherwise we have to qualify all other calls to shift
 # as calls to CORE::shift