You cannot select more than 25 topics
			Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
		
		
		
		
		
			
		
			
				
	
	
		
			52 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Perl
		
	
			
		
		
	
	
			52 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Perl
		
	
package TQt::attributes;
 | 
						|
#
 | 
						|
# I plan to support public/protected/private attributes. here goes.
 | 
						|
# Attributes default to protected.
 | 
						|
#
 | 
						|
# package MyBase;
 | 
						|
# use TQt::attributes qw(
 | 
						|
# private:
 | 
						|
#    foo
 | 
						|
# protected:
 | 
						|
#    bar
 | 
						|
# public:
 | 
						|
#    baz
 | 
						|
# );
 | 
						|
#
 | 
						|
# package MyDerived;
 | 
						|
# use TQt::isa qw(MyBase);
 | 
						|
#
 | 
						|
# sub foo {
 | 
						|
#     # 1 way to access private attributes from derived class
 | 
						|
#     #
 | 
						|
#     # this->{$class} contains private attributes for $class
 | 
						|
#     # I specify it to always work that way,
 | 
						|
#     # so feel free to use it in code.
 | 
						|
#     this->{MyBase}{foo} = 10;
 | 
						|
#
 | 
						|
#     # 2 ways to access protected attributes
 | 
						|
#     bar = 10;
 | 
						|
#     this->{bar} = 10;
 | 
						|
#
 | 
						|
#     # 3 ways to access public attributes
 | 
						|
#     baz = 10;
 | 
						|
#     this->{baz} = 10;
 | 
						|
#     this->baz = 10;
 | 
						|
# }
 | 
						|
#
 | 
						|
# Attributes override any method with the same name, so you may want
 | 
						|
# to prefix them with _ to prevent conflicts.
 | 
						|
#
 | 
						|
sub import {
 | 
						|
    my $class = shift;
 | 
						|
    my $caller = (caller)[0];
 | 
						|
 | 
						|
    for my $attribute (@_) {
 | 
						|
	exists ${ ${$caller . '::META'}{'attributes'} }{$attribute} and next;
 | 
						|
	TQt::_internal::installattribute($caller, $attribute);
 | 
						|
        ${ ${$caller . '::META'}{'attributes'} }{$attribute} = 1;
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
1;
 |