Deprecation in Parrot
This is a list of currently deprecated features of Parrot. Every deprecation has an associated RT ticket. Each item indicates the last release it's guaranteed to appear in. Items marked with a release of ??? are still deprecated, but a firm deadline for their removal has not yet been established.
When deprecated items are removed, all usage of the feature in the repository should be updated or removed; including documentation.
vtable entries
get_attr
[post 0.5.2]See RT #48583.
set_attr
[post 0.5.2]See RT #48585.
type_keyed
[post 0.5.2]See RT #48577.
type_keyed_int
[post 0.5.2]See RT #48579.
type_keyed_str
[post 0.5.2]See RT #48581.
type
[post 0.5.2]See RT #48567.
new_from_string
[post 0.5.0]See RT #47011.
Opcodes
pioctl
[post 0.5.1]See RT #48589.
store_global
[post 0.5.0]See RT #48016. Replace usage with set_[hll,root]_global variants.
find_global
[post 0.5.0]See RT #48018. Replace usage with get_[hll,root]_global variants.
new
(out PMC, in INT, in STR) [post 0.5.0]See RT #47011.
getclass
[post 0.5.0]See RT #47972. Future use should use the
get_class
opcode.get_mro
[post 0.5.0]See RT #47976.
getfd
[post 0.5.1]See RT #48310.
saveall
andrestoreall
("register stack" ops) [post 0.6.1]It is much faster to use Parrot Calling Conventions or a separate set of registers rather than
bsr
/ret
calling. See RT #52838.save
,restore
, other "user stack" ops [post 0.7.0]It is much faster and more flexible to use
push
andpop
on an explicit array object. The full list of deprecated ops is show below:depth entrytype lookback restore rotate_up save savec
See RT #52842 for details.
Class Features
Integer Type IDs [post 0.5.0]
See RT #48024. Instead of
$P0 = new Integer
or$P0 = new .Integer
, use the following syntax, which works for both PMCs and objects.$P0 = new 'Integer'
PMC union struct [post 0.5.0]
See RT #48014. This will be removed once all core PMCs have been updated.
Exceptions
Keyed access to exception attributes [post 0.5.1]
See RT #48012. Attributes on exception objects will no longer be accessible by integer or string key, use
getattribute
andsetattribute
instead.
PIR syntax
<.namespace <identifier
>> syntax [post 0.5.1]See RT #48737.
Use of
::
in identifiers [post 0.5.1]See RT #48735.
.namespace [ "a" .. "b" ]
[post 0.5.0]See RT #46715.
vtable name .constants and __vtable overrides [post 0.5.2]
See RT #48877.
Assignment syntax with opcodes [post ???]
See RT #36283. When the first argument of an opcode is
OUT
, then the assignment syntax will be allowed, as it is today.In any other case (i.e.
INOUT
,IN
), this will become a syntax error. For example:$S0 = print $P0 = substr 1, 2, "x"
Will have to be:
print $S0 substr $P0, 1, 2, "x"
Parrot Compiler tools
Currently there are no deprecations.