/
setting
224 lines (188 loc) · 7.44 KB
/
setting
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# vim: ft=perl6
# We have to do this directly due to the circularity saw. Same
# reason forces uncontainerized .NET values.
#
# ClassHOW instances are shared between lexical instantiations of a class.
#
# class ClassHOW {
# has Array[Frame] $.outers;
#
# # TODO
# has Array[Sub] $.scoped-parents;
# has Array[Sub] $.scoped-roles;
#
# # used to stage for composition - not yet
# has Dictionary[str,int] $.method-scopes;
# has Dictionary[str,Sub] $.methods;
#
# has DynProtoMetaObject $.meta-object;
# }
#
# Due to concerns of screwing up composition, adding new superclasses, roles,
# or attributes in an augment is not allowed at this time. Methods only.
#
# to create a class:
# BEGIN my $Foo_HOW ::= ClassHOW.new("Foo");
# BEGIN {
# $Foo_HOW.push-scope(callframe);
# $Foo_HOW.add-super(...);
# $Foo_HOW.add-role(...);
# $Foo_HOW.add-scoped-method("bar", 0, sub { ... });
# $Foo_HOW.compose;
# }
# my ::Foo will begin { $Foo_HOW.create-protoobject(callframe) }
# will enter { $Foo_HOW.create-protoobject(callframe) };
#
# to augment:
# BEGIN my $scopenum = $Foo_HOW.push-scope(callframe);
# BEGIN { $Foo_HOW.add-scoped-method("baz", $scopenum, sub { ... }); }
# Foo.^bind-outer($scopenum, callframe);
my class ClassHOW { ... }
PRE-INIT {
# ClassHOW.new($name) --> meta class instance
sub new { Q:NIL {
LEXICALS: $pmo : DynProtoMetaObject, $self : DynObject
new/0:DynProtoMetaObject L!$pmo
new/0:DynObject L!$self
L@$pmo L@$self !.how
L@$pmo =[1] @ unwrap:String !.name
L@$self @.slots L@$pmo wrap ![meta-object]
L@$self =[0] @ cast:DynObject @.klass !.klass
L@$self wrapobj
} }
# $how.push-scope($outer)
sub push-scope { Q:NIL {
=[0] @ @!meta-object unwrap:DynProtoMetaObject @.def_outers
=[1] @ unwrap:Frame .virtcall/1:Add
null:Variable
} }
# $how.add-super($how)
sub add-super { Q:NIL {
=[0] @ @!meta-object unwrap:DynProtoMetaObject @.superclasses
=[1] @ @!meta-object unwrap:DynProtoMetaObject .virtcall/1:Add
null:Variable
} }
# $how.add-scoped-method($name, $index, $sub)
sub add-scoped-method { Q:NIL {
LEXICALS: $name : String, $index : Int32, $sub : DynObject
LEXICALS: $mo : DynProtoMetaObject
=[0] @ @!meta-object unwrap:DynProtoMetaObject L!$mo
=[1] @ unwrap:String L!$name
=[2] @ unwrap:Int32 L!$index
=[3] @ cast:DynObject L!$sub
LEXICALS: $proto : Frame, $code : DynBlockDelegate
L@$sub @.slots @[code] cast:DynBlockDelegate L!$code
L@$sub @.slots @[proto] cast:Frame L!$proto
LEXICALS: $m : DynProtoMetaObject.Method
L@$code L@$proto L@$index new/3:DynProtoMetaObject.Method L!$m
L@$mo @.local L@$name L@$m ![]
null:Variable
} }
# $how.create-protoobject($callframe, $superlist)
sub create-protoobject { Q:NIL {
LEXICALS: $p : DynObject, $pmo : DynProtoMetaObject, $mo : DynMetaObject
new/0:DynObject L!$p
=[0] @ @!meta-object unwrap:DynProtoMetaObject L!$pmo
L@$pmo new/1:DynMetaObject L!$mo
L@$mo @.outers =[1] @ unwrap:Frame .virtcall/1:Add
L@$mo =[2] @ unwrap:List<DynMetaObject> .virtcall/1:BuildC3MRO
L@$p null:Dictionary<string,object> !.slots
L@$p L@$mo !.klass
L@$p wrapobj
} }
sub compose { Q:NIL { null:Variable } }
Q:NIL {
LEXICALS: $chpmo : DynProtoMetaObject, $ch : DynObject
new/0:DynProtoMetaObject L!$chpmo
new/0:DynObject L!$ch
L@$chpmo L@$ch !.how
L@$chpmo "ClassHOW" !.name
L@$ch @.slots L@$chpmo wrap ![meta-object]
L@&push-scope @ L@$ch wrapobj callframe wrap .call/2:v
L@&add-scoped-method @ L@$ch wrapobj ="new" 0 wrap L@&new .call/4:v
L@&add-scoped-method @ L@$ch wrapobj ="push-scope" 0 wrap
L@&push-scope .call/4:v
L@&add-scoped-method @ L@$ch wrapobj ="add-scoped-method" 0 wrap
L@&add-scoped-method .call/4:v
L@&add-scoped-method @ L@$ch wrapobj ="add-super" 0 wrap
L@&add-super .call/4:v
L@&add-scoped-method @ L@$ch wrapobj ="compose" 0 wrap
L@&compose .call/4:v
L@&add-scoped-method @ L@$ch wrapobj ="create-protoobject" 0 wrap
L@&create-protoobject .call/4:v
L@&create-protoobject @ L@$ch wrapobj callframe wrap
new/0:List<DynMetaObject> wrap .call/3 L!^ClassHOW
L@$ch L@^ClassHOW @ cast:DynObject @.klass !.klass
L@$ch wrapobj L!^'ClassHOW!HOW'
null:Variable
}
}
# cannot be a normal class - it has no parents (and must not be cloned)
my class Mu { ... }
my class Any { ... }
my class Cool { ... }
# these are really defined in the kernel
my class Scalar { ... }
my class Sub { ... }
PRE-INIT {
# (DynProtoMetaObject $dpmo, ClassHOW $super --> ClassHOW)
sub wrap-dpmo { Q:NIL {
LEXICALS: $ch : Variable, $dp : DynProtoMetaObject
L@^^ClassHOW dup@ ="" .method/1:new L!$ch
=[0] @ unwrap:DynProtoMetaObject L!$dp
L@$ch @ L@$dp wrap @ !!meta-object
L@$ch dup@ =[1] .method/1:add-super:v
L@$ch
} }
# (ClassHOW $me, DynMetaObject $use, DynMetaObject $p --> Variable)
sub wrapped-protoobj { Q:NIL {
LEXICALS: $p : DynObject, $pmo : DynProtoMetaObject, $mo : DynMetaObject
LEXICALS: $s : List<DynMetaObject>
new/0:DynObject L!$p
=[0] @ @!meta-object unwrap:DynProtoMetaObject L!$pmo
=[1] @ unwrap:DynMetaObject L!$mo
new/0:List<DynMetaObject> L!$s
L@$s =[2] @ unwrap:DynMetaObject .virtcall/1:Add
L@$mo L@$s .virtcall/1:BuildC3MRO
L@$pmo =[0] @ !.how
L@$p null:Dictionary<string,object> !.slots
L@$p L@$mo !.klass
L@$p wrapobj
} }
Q:NIL {
LEXICALS: $plist : List<DynMetaObject>
L@^ClassHOW dup@ ="Mu" .method/1:new L!^'Mu!HOW'
new/0:List<DynMetaObject> L!$plist
L@^'Mu!HOW' dup@ callframe wrap L@$plist wrap
.method/2:create-protoobject L!^Mu
L@^ClassHOW dup@ ="Any" .method/1:new L!^'Any!HOW'
L@^'Any!HOW' dup@ L@^'Mu!HOW' .method/1:add-super:v
new/0:List<DynMetaObject> L!$plist
L@$plist L@^Mu @ cast:DynObject @.klass .virtcall/1:Add
L@^'Any!HOW' dup@ callframe wrap L@$plist wrap
.method/2:create-protoobject L!^Any
L@^ClassHOW dup@ ="Any" .method/1:new L!^'Cool!HOW'
L@^'Cool!HOW' dup@ L@^'Any!HOW' .method/1:add-super:v
new/0:List<DynMetaObject> L!$plist
L@$plist L@^Any @ cast:DynObject @.klass .virtcall/1:Add
L@^'Cool!HOW' dup@ callframe wrap L@$plist wrap
.method/2:create-protoobject L!^Cool
L@&wrap-dpmo @ F@Kernel.SubPMO wrap L@^'Any!HOW'
.call/2 L!^'Sub!HOW'
L@&wrapped-protoobj @ L@^'Sub!HOW' F@Kernel.SubMO wrap
L@^Any @ cast:DynObject @.klass wrap .call/3 L!^Sub
L@&wrap-dpmo @ F@Kernel.ScalarContainerPMO wrap L@^'Any!HOW'
.call/2 L!^'Scalar!HOW'
L@&wrapped-protoobj @ L@^'Scalar!HOW' F@Kernel.ScalarContainerMO wrap
L@^Any @ cast:DynObject @.klass wrap .call/3 L!^Scalar
null:Variable
} }
sub infix:<~> { Q:NIL {
=[0] @ unwrap:String =[1] @ unwrap:String .plaincall/2:String.Concat
wrap
} }
sub say { Q:NIL {
=[0] @ unwrap:String .plaincall/1:Console.WriteLine null:Variable
} }
my class Foo { }
say("Hello, " ~ "World");