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# Copyright (c) 2003 Flavio Soibelmann Glock. All rights reserved. |
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# This program is free software; you can redistribute it and/or |
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# modify it under the same terms as Perl itself. |
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package DateTime::Span; |
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use strict; |
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use DateTime::Set; |
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use DateTime::SpanSet; |
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use Params::Validate qw( validate SCALAR BOOLEAN OBJECT CODEREF ARRAYREF ); |
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use vars qw( $VERSION ); |
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use constant INFINITY => DateTime::INFINITY; |
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use constant NEG_INFINITY => DateTime::NEG_INFINITY; |
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27990
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$VERSION = $DateTime::Set::VERSION; |
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sub set_time_zone { |
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my ( $self, $tz ) = @_; |
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$self->{set} = $self->{set}->iterate( |
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sub { |
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my %tmp = %{ $_[0]->{list}[0] }; |
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$tmp{a} = $tmp{a}->clone->set_time_zone( $tz ) if ref $tmp{a}; |
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$tmp{b} = $tmp{b}->clone->set_time_zone( $tz ) if ref $tmp{b}; |
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\%tmp; |
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} |
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2
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); |
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return $self; |
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} |
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# note: the constructor must clone its DateTime parameters, such that |
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# the set elements become immutable |
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sub from_datetimes { |
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1
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my $class = shift; |
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my %args = validate( @_, |
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{ start => |
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{ type => OBJECT, |
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optional => 1, |
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}, |
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end => |
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{ type => OBJECT, |
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optional => 1, |
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}, |
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after => |
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{ type => OBJECT, |
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optional => 1, |
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}, |
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before => |
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{ type => OBJECT, |
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optional => 1, |
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}, |
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} |
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); |
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115
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my $self = {}; |
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my $set; |
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115
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die "No arguments given to DateTime::Span->from_datetimes\n" |
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unless keys %args; |
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if ( exists $args{start} && exists $args{after} ) { |
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die "Cannot give both start and after arguments to DateTime::Span->from_datetimes\n"; |
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} |
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if ( exists $args{end} && exists $args{before} ) { |
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die "Cannot give both end and before arguments to DateTime::Span->from_datetimes\n"; |
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} |
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115
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my ( $start, $open_start, $end, $open_end ); |
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115
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( $start, $open_start ) = ( NEG_INFINITY, 0 ); |
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115
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100
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( $start, $open_start ) = ( $args{start}, 0 ) if exists $args{start}; |
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( $start, $open_start ) = ( $args{after}, 1 ) if exists $args{after}; |
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115
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( $end, $open_end ) = ( INFINITY, 0 ); |
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100
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( $end, $open_end ) = ( $args{end}, 0 ) if exists $args{end}; |
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( $end, $open_end ) = ( $args{before}, 1 ) if exists $args{before}; |
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514
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if ( $start > $end ) { |
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0
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die "Span cannot start after the end in DateTime::Span->from_datetimes\n"; |
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} |
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115
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2557
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$set = Set::Infinite::_recurrence->new( $start, $end ); |
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100
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4442
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if ( $start != $end ) { |
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# remove start, such that we have ">" instead of ">=" |
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105
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100
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$set = $set->complement( $start ) if $open_start; |
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# remove end, such that we have "<" instead of "<=" |
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105
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$set = $set->complement( $end ) if $open_end; |
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} |
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115
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3625
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$self->{set} = $set; |
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115
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bless $self, $class; |
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377
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return $self; |
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} |
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93
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sub from_datetime_and_duration { |
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3
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3
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1
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1320
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my $class = shift; |
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3
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my %args = @_; |
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3
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3
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my $key; |
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my $dt; |
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# extract datetime parameters |
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3
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for ( qw( start end before after ) ) { |
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100
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if ( exists $args{$_} ) { |
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3
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3
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$key = $_; |
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3
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$dt = delete $args{$_}; |
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} |
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} |
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107
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# extract duration parameters |
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3
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2
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my $dt_duration; |
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3
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50
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if ( exists $args{duration} ) { |
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0
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0
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$dt_duration = $args{duration}; |
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} |
112
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else { |
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3
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12
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$dt_duration = DateTime::Duration->new( %args ); |
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} |
115
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# warn "Creating span from $key => ".$dt->datetime." and $dt_duration"; |
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3
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150
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my $other_date; |
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my $other_key; |
118
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3
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100
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8
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if ( $dt_duration->is_positive ) { |
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2
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100
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40
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if ( $key eq 'end' || $key eq 'before' ) { |
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1
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1
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$other_key = 'start'; |
121
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1
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3
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$other_date = $dt->clone->subtract_duration( $dt_duration ); |
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} |
123
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else { |
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1
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2
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$other_key = 'before'; |
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1
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4
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$other_date = $dt->clone->add_duration( $dt_duration ); |
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} |
127
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} |
128
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else { |
129
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1
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50
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33
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12
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if ( $key eq 'end' || $key eq 'before' ) { |
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1
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2
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$other_key = 'start'; |
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1
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2
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$other_date = $dt->clone->add_duration( $dt_duration ); |
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} |
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else { |
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0
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0
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$other_key = 'before'; |
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0
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0
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$other_date = $dt->clone->subtract_duration( $dt_duration ); |
136
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} |
137
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} |
138
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# warn "Creating span from $key => ".$dt->datetime." and ".$other_date->datetime; |
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3
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1103
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return $class->new( $key => $dt, $other_key => $other_date ); |
140
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} |
141
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142
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# This method is intentionally not documented. It's really only for |
143
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# use by ::Set and ::SpanSet's as_list() and iterator() methods. |
144
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sub new { |
145
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32
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32
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0
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1289
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my $class = shift; |
146
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32
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62
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my %args = @_; |
147
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148
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# If we find anything _not_ appropriate for from_datetimes, we |
149
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# assume it must be for durations, and call this constructor. |
150
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# This way, we don't need to hardcode the DateTime::Duration |
151
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# parameters. |
152
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32
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73
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foreach ( keys %args ) |
153
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{ |
154
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43
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50
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212
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return $class->from_datetime_and_duration(%args) |
155
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unless /^(?:before|after|start|end)$/; |
156
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} |
157
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158
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32
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101
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return $class->from_datetimes(%args); |
159
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} |
160
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161
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sub is_empty_set { |
162
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0
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0
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0
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0
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my $set = $_[0]; |
163
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0
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0
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$set->{set}->is_null; |
164
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} |
165
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166
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sub clone { |
167
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bless { |
168
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set => $_[0]->{set}->copy, |
169
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1
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1
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1
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20
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}, ref $_[0]; |
170
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} |
171
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172
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# Set::Infinite methods |
173
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174
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sub intersection { |
175
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3
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3
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1
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14
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my ($set1, $set2) = @_; |
176
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3
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5
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my $class = ref($set1); |
177
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3
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3
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my $tmp = {}; # $class->new(); |
178
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3
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50
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19
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$set2 = $set2->as_spanset |
179
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if $set2->can( 'as_spanset' ); |
180
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3
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50
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14
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$set2 = $set2->as_set |
181
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if $set2->can( 'as_set' ); |
182
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3
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50
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15
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$set2 = DateTime::Set->from_datetimes( dates => [ $set2 ] ) |
183
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unless $set2->can( 'union' ); |
184
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3
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13
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$tmp->{set} = $set1->{set}->intersection( $set2->{set} ); |
185
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186
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# intersection() can generate something more complex than a span. |
187
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3
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6115
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bless $tmp, 'DateTime::SpanSet'; |
188
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189
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3
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12
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return $tmp; |
190
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} |
191
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192
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|
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sub intersects { |
193
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9
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9
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1
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8
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my ($set1, $set2) = @_; |
194
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9
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11
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my $class = ref($set1); |
195
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9
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50
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21
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$set2 = $set2->as_spanset |
196
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if $set2->can( 'as_spanset' ); |
197
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9
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50
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20
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$set2 = $set2->as_set |
198
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if $set2->can( 'as_set' ); |
199
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9
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50
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39
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$set2 = DateTime::Set->from_datetimes( dates => [ $set2 ] ) |
200
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unless $set2->can( 'union' ); |
201
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9
|
|
|
|
|
23
|
return $set1->{set}->intersects( $set2->{set} ); |
202
|
|
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|
} |
203
|
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204
|
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|
|
sub contains { |
205
|
1
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|
|
1
|
1
|
4
|
my ($set1, $set2) = @_; |
206
|
1
|
|
|
|
|
1
|
my $class = ref($set1); |
207
|
1
|
50
|
|
|
|
6
|
$set2 = $set2->as_spanset |
208
|
|
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|
|
|
|
if $set2->can( 'as_spanset' ); |
209
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1
|
50
|
|
|
|
4
|
$set2 = $set2->as_set |
210
|
|
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|
|
|
|
if $set2->can( 'as_set' ); |
211
|
1
|
50
|
|
|
|
15
|
$set2 = DateTime::Set->from_datetimes( dates => [ $set2 ] ) |
212
|
|
|
|
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|
|
unless $set2->can( 'union' ); |
213
|
1
|
|
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|
|
6
|
return $set1->{set}->contains( $set2->{set} ); |
214
|
|
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|
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|
|
} |
215
|
|
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|
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216
|
|
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|
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|
|
sub union { |
217
|
5
|
|
|
5
|
1
|
7
|
my ($set1, $set2) = @_; |
218
|
5
|
|
|
|
|
6
|
my $class = ref($set1); |
219
|
5
|
|
|
|
|
7
|
my $tmp = {}; # $class->new(); |
220
|
5
|
50
|
|
|
|
16
|
$set2 = $set2->as_spanset |
221
|
|
|
|
|
|
|
if $set2->can( 'as_spanset' ); |
222
|
5
|
50
|
|
|
|
39
|
$set2 = $set2->as_set |
223
|
|
|
|
|
|
|
if $set2->can( 'as_set' ); |
224
|
5
|
50
|
|
|
|
12
|
$set2 = DateTime::Set->from_datetimes( dates => [ $set2 ] ) |
225
|
|
|
|
|
|
|
unless $set2->can( 'union' ); |
226
|
5
|
|
|
|
|
13
|
$tmp->{set} = $set1->{set}->union( $set2->{set} ); |
227
|
|
|
|
|
|
|
|
228
|
|
|
|
|
|
|
# union() can generate something more complex than a span. |
229
|
5
|
|
|
|
|
945
|
bless $tmp, 'DateTime::SpanSet'; |
230
|
|
|
|
|
|
|
|
231
|
|
|
|
|
|
|
# # We have to check it's internal structure to find out. |
232
|
|
|
|
|
|
|
# if ( $#{ $tmp->{set}->{list} } != 0 ) { |
233
|
|
|
|
|
|
|
# bless $tmp, 'Date::SpanSet'; |
234
|
|
|
|
|
|
|
# } |
235
|
|
|
|
|
|
|
|
236
|
5
|
|
|
|
|
9
|
return $tmp; |
237
|
|
|
|
|
|
|
} |
238
|
|
|
|
|
|
|
|
239
|
|
|
|
|
|
|
sub complement { |
240
|
0
|
|
|
0
|
1
|
0
|
my ($set1, $set2) = @_; |
241
|
0
|
|
|
|
|
0
|
my $class = ref($set1); |
242
|
0
|
|
|
|
|
0
|
my $tmp = {}; # $class->new; |
243
|
0
|
0
|
|
|
|
0
|
if (defined $set2) { |
244
|
0
|
0
|
|
|
|
0
|
$set2 = $set2->as_spanset |
245
|
|
|
|
|
|
|
if $set2->can( 'as_spanset' ); |
246
|
0
|
0
|
|
|
|
0
|
$set2 = $set2->as_set |
247
|
|
|
|
|
|
|
if $set2->can( 'as_set' ); |
248
|
0
|
0
|
|
|
|
0
|
$set2 = DateTime::Set->from_datetimes( dates => [ $set2 ] ) |
249
|
|
|
|
|
|
|
unless $set2->can( 'union' ); |
250
|
0
|
|
|
|
|
0
|
$tmp->{set} = $set1->{set}->complement( $set2->{set} ); |
251
|
|
|
|
|
|
|
} |
252
|
|
|
|
|
|
|
else { |
253
|
0
|
|
|
|
|
0
|
$tmp->{set} = $set1->{set}->complement; |
254
|
|
|
|
|
|
|
} |
255
|
|
|
|
|
|
|
|
256
|
|
|
|
|
|
|
# complement() can generate something more complex than a span. |
257
|
0
|
|
|
|
|
0
|
bless $tmp, 'DateTime::SpanSet'; |
258
|
|
|
|
|
|
|
|
259
|
|
|
|
|
|
|
# # We have to check it's internal structure to find out. |
260
|
|
|
|
|
|
|
# if ( $#{ $tmp->{set}->{list} } != 0 ) { |
261
|
|
|
|
|
|
|
# bless $tmp, 'Date::SpanSet'; |
262
|
|
|
|
|
|
|
# } |
263
|
|
|
|
|
|
|
|
264
|
0
|
|
|
|
|
0
|
return $tmp; |
265
|
|
|
|
|
|
|
} |
266
|
|
|
|
|
|
|
|
267
|
|
|
|
|
|
|
sub start { |
268
|
53
|
|
|
53
|
1
|
1735
|
return DateTime::Set::_fix_datetime( $_[0]->{set}->min ); |
269
|
|
|
|
|
|
|
} |
270
|
|
|
|
|
|
|
|
271
|
|
|
|
|
|
|
*min = \&start; |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
sub end { |
274
|
53
|
|
|
53
|
1
|
3835
|
return DateTime::Set::_fix_datetime( $_[0]->{set}->max ); |
275
|
|
|
|
|
|
|
} |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
*max = \&end; |
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
sub start_is_open { |
280
|
|
|
|
|
|
|
# min_a returns info about the set boundary |
281
|
3
|
|
|
3
|
1
|
10
|
my ($min, $open) = $_[0]->{set}->min_a; |
282
|
3
|
|
|
|
|
19
|
return $open; |
283
|
|
|
|
|
|
|
} |
284
|
|
|
|
|
|
|
|
285
|
0
|
0
|
|
0
|
1
|
0
|
sub start_is_closed { $_[0]->start_is_open ? 0 : 1 } |
286
|
|
|
|
|
|
|
|
287
|
|
|
|
|
|
|
sub end_is_open { |
288
|
|
|
|
|
|
|
# max_a returns info about the set boundary |
289
|
3
|
|
|
3
|
1
|
857
|
my ($max, $open) = $_[0]->{set}->max_a; |
290
|
3
|
|
|
|
|
19
|
return $open; |
291
|
|
|
|
|
|
|
} |
292
|
|
|
|
|
|
|
|
293
|
0
|
0
|
|
0
|
1
|
|
sub end_is_closed { $_[0]->end_is_open ? 0 : 1 } |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
|
296
|
|
|
|
|
|
|
# span == $self |
297
|
0
|
|
|
0
|
0
|
|
sub span { @_ } |
298
|
|
|
|
|
|
|
|
299
|
|
|
|
|
|
|
sub duration { |
300
|
0
|
|
|
0
|
1
|
|
my $dur; |
301
|
|
|
|
|
|
|
|
302
|
0
|
|
|
|
|
|
local $@; |
303
|
0
|
|
|
|
|
|
eval { |
304
|
0
|
|
|
|
|
|
local $SIG{__DIE__}; # don't want to trap this (rt ticket 5434) |
305
|
0
|
|
|
|
|
|
$dur = $_[0]->end->subtract_datetime_absolute( $_[0]->start ) |
306
|
|
|
|
|
|
|
}; |
307
|
|
|
|
|
|
|
|
308
|
0
|
0
|
|
|
|
|
return $dur if defined $dur; |
309
|
|
|
|
|
|
|
|
310
|
0
|
|
|
|
|
|
return DateTime::Infinite::Future->new - |
311
|
|
|
|
|
|
|
DateTime::Infinite::Past->new; |
312
|
|
|
|
|
|
|
} |
313
|
|
|
|
|
|
|
*size = \&duration; |
314
|
|
|
|
|
|
|
|
315
|
|
|
|
|
|
|
1; |
316
|
|
|
|
|
|
|
|
317
|
|
|
|
|
|
|
__END__ |