3 === Revise MetaRole API to reunify class/role metaroles:
10 role_attribute => [ ... ],
14 If the $meta is a class, we apply the roles to the class. If it's a role, we
15 hold onto them and apply them as part of applying the role to a class.
17 To make this all work nicely, we'll probably want to track the original role
18 where a method was defined, just like we do with attributes currently. We'll
19 also need to store method modifiers with their original role, which may mean
20 adding some sort of Moose::Meta::Role::MethodModifier class.
22 For each role-specific thing (methods, attributes, etc.) we should allow a
23 role_attribute, role_method, etc. key. The common case will be that the
24 metaroles are intended for the consuming class, but we should allow for
25 metaroles on the role's metaobjects as well.
27 === Remove a bunch of deprecated crap
29 See Moose::Manual::Delta for a list. Some of this is important to make merging
30 Class::MOP into Moose core much easier. Other is just removing complexity
31 needed to support ancient APIs.
33 == Old todo (does anyone look at this?)
35 -------------------------------------------------------------------------------
37 -------------------------------------------------------------------------------
39 -------------------------------------------------------------------------------
41 -------------------------------------------------------------------------------
47 => where { Encode::is_utf8( $_[0] ) or $_[0] !~ m/[^0x00-0x7F]/x }
48 => optimize_as { defined($_[0]) && !ref($_[0]) };
52 => where { !Encode::is_utf8( $_[0] ) }
53 => optimize_as { defined($_[0]) && !ref($_[0]) };
57 Add support for doing it with Classes which do not have
58 a type constraint yet created
64 - inherited slot specs
66 'does' can be added to,.. but not changed
67 (need type unions for this)
71 a proxied attribute is an attribute
72 which looks like an attribute,
73 talks like an attribute, smells
74 like an attribute,.. but if you
75 look behind the curtain,.. its
76 over there.. in that other object
78 (... probably be a custom metaclass)
82 [13:16] mst stevan: slight problem with coerce
83 [13:16] mst I only get to declare it once
84 [13:17] mst so if I'm trying to declare it cast-style per-source-class rather than per-target-class
85 [13:17] mst I am extremely screwed
87 [13:17] stevan they are not class specific
88 [13:18] stevan they are attached to the type constraint itself
89 [13:18] * stevan ponders anon-coercion-metaobjects
90 [13:18] mst yes, that's fine
91 [13:19] mst but when I declare a class
92 [13:19] mst I want to be able to say "this class coerces to X type via <this>"
93 [13:19] stevan yeah something like that
94 [13:19] stevan oh,.. hmm
95 [13:20] stevan sort of like inflate/deflate?
96 [13:20] stevan around the accessors?
97 [13:25] * bluefeet has quit (Remote host closed the connection)
99 [13:27] mst nothing like that
100 [13:27] mst like a cast
101 [13:31] mst stevan: $obj->foo($bar); where 'foo' expects a 'Foo' object
102 [13:31] mst stevan: is effectively <Foo>$bar, right?
103 [13:32] mst stevan: I want to be able to say in package Bar
104 [13:32] mst stevan: coerce_to 'Foo' via { ... };
108 -----------------------------------------------------------
109 -- Type Constraints refactor
110 -----------------------------------------------------------
112 - add support for locally scoped TC
114 This would borrow from MooseX::TypeLibrary to prefix the TC with the name
115 of the package. It would then be accesible from the outside as the fully
116 scoped name, but the local attributes would use it first. (this would need support
117 in the registry for this).
119 - look into sugar extensions
121 Use roles as sugar layer function providers (ala MooseX::AttributeHelpers). This
122 would allow custom metaclasses to provide roles to extend the sugar syntax with.
124 (NOTE: Talk to phaylon a bit more on this)
126 - allow a switch of some kind to optionally turn TC checking off at runtime
128 The type checks can get expensive and some people have suggested that allowing
129 the checks to be turned off would be helpful for deploying into performance
130 intensive systems. Perhaps this can actually be done as an option to make_immutable?
134 * make the errors for TCs use ->message
135 * look into localizing the messages too
136 * make ANON TCs be lazy, so they can possibly be subsituted for the real thing later
137 * make ANON TCs more introspectable
145 where { (/[a-z][a-z0-9]+/i or fail('Invalid character(s)'))
146 and (length($_) >= 5 or fail('Too short (less than 5 chars)'))
148 on_fail { MyException->throw(value => $_[0], message => $_[1]) };
150 # fail() will just return false unless the call is made via
151 $tc->check_or_fail($value);
153 * and then something like this:
155 subtype Foo => as Bar => where { ... } => scoped => -global;
156 subtype Foo => as Bar => where { ... } => scoped => -local;
160 subtype Foo => as Bar => where { ... } => in __PACKAGE__ ;
162 # or (not sure if it would be possible)
164 my $Foo = subtype Bar => where { ... };
168 [17:10] <autarch> stevan: it should do it if I pass coerce => 1 as part of the attribute definition
169 [17:12] <stevan> autarch: what I am not 100% sure of is how to tell it to deep coerce and when to not
170 [17:13] <stevan> cause a basic coerce is from A to B
171 [17:13] <autarch> hmm
172 [17:13] <stevan> which is valid for collection types too
173 [17:13] <stevan> deep coercion is what you are asking for
174 [17:13] <autarch> yeah
175 [17:13] <stevan> so perhaps we add deep_coerce => 1
176 [17:13] <stevan> which will do it
177 [17:13] <autarch> that's fine for me
180 coerce_deeply => 1 # reads better
182 -------------------------------------------------------------------------------
184 -------------------------------------------------------------------------------
186 - rationalize all the get_X methods for classes (and roles)
188 We have get_attribute, get_attributes_list, get_all_attributes,
189 etc. First, we need to make the method names consistent. If something
190 returns an attribute vs a name, that needs to be clear from the method
191 name. We also need to make sure that local vs. "entire inheritance
192 chain" is clear from the name.
194 This is mostly a CMOP change.
196 - Metaclass constructors
198 There's a _lot_ of different conventions in here. Some things to consider:
201 * allowing new( 'name', %args ) vs ( name => 'name', %args )
202 * Method->wrap vs Method->new
204 - Moose::Meta::TypeConstraint::Parameter{izable,ized}
206 The relationship between these two classes is very odd. In particular,
207 this line in Parameterized is insane:
209 foreach my $type (Moose::Util::TypeConstraints::get_all_parameterizable_types()) {
211 Why does it need to loop through all parameterizable types? Shouldn't
212 it know which parameterizable type it "came from"?
214 - Moose::Util::TypeConstraints vs Moose::Meta::Type{Coercion,Constraint}
216 The Util module has _way_ too much functionality. It needs to be
217 refactored so it's a thin sugar layer on top of the meta API. As it
218 stands now, it does things like parse type names (and determine if
219 they're valid), manage the registry, and much more.
221 - Anything with a _(meta)?class method
223 Every method that returns a class name needs to become a rw attribute
224 that can be set via the constructor.
226 - The Moose::Error stuff
228 This is sort of half-implemented. We still use Carp directly, and the
229 internals can't decide how to throw an error (is it
230 Moose->throw_error, __PACKAGE__->throw_error, what?).
232 The internals need to be made consistent before we expose this to the
235 -------------------------------------------------------------------------------
237 -------------------------------------------------------------------------------
239 - Moose "strict" mode
241 use Moose 'strict'; This would allow us to have all sort of expensive tests
242 which can be turned off in prod.
244 - Moose::Philosophy.pod
246 To explain Moose from a very high level
250 We certainly have enough meta-information to make pretty complete POD docs.