# Visibility is not considered.
#
# Note: this function is expensive and is usually used for the main
- # module of a program only. Do not use it to do you own subtype
+ # module of a program only. Do not use it to do your own subtype
# functions.
fun flatten_mclass_hierarchy: POSet[MClass]
do
# A named class
#
-# `MClass` are global to the model; it means that a `MClass` is not bound to a
-# specific `MModule`.
+# `MClass`es are global to the model; it means that a `MClass` is not bound
+# to a specific `MModule`.
#
# This characteristic helps the reasoning about classes in a program since a
# single `MClass` object always denote the same class.
end
# The kind of the class (interface, abstract class, etc.)
- # In Nit, the kind of a class cannot evolve in refinements
+ #
+ # In Nit, the kind of a class cannot evolve in refinements.
var kind: MClassKind
# The visibility of the class
- # In Nit, the visibility of a class cannot evolve in refinements
+ #
+ # In Nit, the visibility of a class cannot evolve in refinements.
redef var visibility
init
# Warning: such a definition may not exist in the early life of the object.
# In this case, the method will abort.
#
- # Use `try_intro` instead
+ # Use `try_intro` instead.
var intro: MClassDef is noinit
- # The definition that introduces the class or null if not yet known.
+ # The definition that introduces the class or `null` if not yet known.
#
- # See `intro`
+ # SEE: `intro`
fun try_intro: nullable MClassDef do
if isset _intro then return _intro else return null
end
# A VT is fixed when:
# * the VT is (re-)defined with the annotation `is fixed`
- # * the VT is (indirectly) bound to an enum class (see `enum_kind`) since there is no subtype possible
- # * the receiver is an enum class since there is no subtype possible
+ # * the receiver is an enum class since there is no subtype that can
+ # redefine this virtual type
redef fun lookup_fixed(mmodule: MModule, resolved_receiver: MType): MType
do
assert not resolved_receiver.need_anchor
# Recursively lookup the fixed result
res = res.lookup_fixed(mmodule, resolved_receiver)
- # 1. For a fixed VT, return the resolved bound
+ # For a fixed VT, return the resolved bound
if prop.is_fixed then return res
- # 2. For a enum boud, return the bound
- if res isa MClassType and res.mclass.kind == enum_kind then return res
-
- # 3. for a enum receiver return the bound
+ # For a enum receiver return the bound
if resolved_receiver.mclass.kind == enum_kind then return res
return self
end
# A PT is fixed when:
- # * Its bound is a enum class (see `enum_kind`).
- # The PT is just useless, but it is still a case.
- # * More usually, the `resolved_receiver` is a subclass of `self.mclass`,
+ # * The `resolved_receiver` is a subclass of `self.mclass`,
# so it is necessarily fixed in a `super` clause, either with a normal type
# or with another PT.
# See `resolve_for` for examples about related issues.
#print "{class_name}: {self}/{mtype}/{anchor}?"
if mtype isa MGenericType and mtype.mclass == self.mclass then
- var res = mtype.arguments[self.rank]
- if anchor != null and res.need_anchor then
- # Maybe the result can be resolved more if are bound to a final class
- var r2 = res.anchor_to(mmodule, anchor)
- if r2 isa MClassType and r2.mclass.kind == enum_kind then return r2
- end
- return res
+ return mtype.arguments[self.rank]
end
# self is a parameter type of mtype (or of a super-class of mtype)
res.append "::"
end
end
- if mclassdef.mclass != mproperty.intro_mclassdef.mclass then
- # precise "B" only if not the same class than "A"
- res.append mproperty.intro_mclassdef.name
- res.append "::"
- end
+ # precise "B" because it is not the same class than "A"
+ res.append mproperty.intro_mclassdef.name
+ res.append "::"
# Always use the property name "x"
res.append mproperty.name
end
res.append mproperty.intro_mclassdef.mmodule.c_name
res.append "__"
end
- if mclassdef.mclass != mproperty.intro_mclassdef.mclass then
- res.append mproperty.intro_mclassdef.name.to_cmangle
- res.append "__"
- end
+ res.append mproperty.intro_mclassdef.name.to_cmangle
+ res.append "__"
res.append mproperty.name.to_cmangle
end
return res.to_s
# TODO: private init because enumeration.
- # Can a class of kind `self` specializes a class of kine `other`?
+ # Can a class of kind `self` specializes a class of kind `other`?
fun can_specialize(other: MClassKind): Bool
do
if other == interface_kind then return true # everybody can specialize interfaces
nitlanguage / nit.git / blobdiff