#
# Each classdef is associated with its super-classdefs in regard to
# its module of definition.
+ #
+ # ~~~
+ # var m = new ModelDiamond
+ # assert m.mclassdef_hierarchy.has_edge(m.mclassdef_b, m.mclassdef_a)
+ # assert not m.mclassdef_hierarchy.has_edge(m.mclassdef_a, m.mclassdef_b)
+ # assert not m.mclassdef_hierarchy.has_edge(m.mclassdef_b, m.mclassdef_c)
+ # ~~~
var mclassdef_hierarchy = new POSet[MClassDef]
# Class-type hierarchy restricted to the introduction.
# (instead of an empty array)
#
# Visibility or modules are not considered
+ #
+ # ~~~
+ # var m = new ModelStandalone
+ # assert m.get_mclasses_by_name("Object") == [m.mclass_o]
+ # assert m.get_mclasses_by_name("Fail") == null
+ # ~~~
fun get_mclasses_by_name(name: String): nullable Array[MClass]
do
return mclasses_by_name.get_or_null(name)
# 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
class MClassKind
redef var to_s
+ # Can a class of kind `self` define a membership predicate?
+ var can_customize_isa: Bool
+
+ # Can a class of kind `self` define a constructor?
+ var can_init: Bool
+
# Is a constructor required?
var need_init: Bool
end
# The class kind `abstract`
-fun abstract_kind: MClassKind do return once new MClassKind("abstract class", true)
+fun abstract_kind: MClassKind do return once new MClassKind("abstract class", false, true, true)
# The class kind `concrete`
-fun concrete_kind: MClassKind do return once new MClassKind("class", true)
+fun concrete_kind: MClassKind do return once new MClassKind("class", false, true, true)
# The class kind `interface`
-fun interface_kind: MClassKind do return once new MClassKind("interface", false)
+fun interface_kind: MClassKind do return once new MClassKind("interface", false, true, false)
# The class kind `enum`
-fun enum_kind: MClassKind do return once new MClassKind("enum", false)
+fun enum_kind: MClassKind do return once new MClassKind("enum", false, true, false)
# The class kind `extern`
-fun extern_kind: MClassKind do return once new MClassKind("extern class", false)
+fun extern_kind: MClassKind do return once new MClassKind("extern class", false, true, false)
+
+# A standalone pre-constructed model used to test various model-related methods.
+#
+# When instantiated, a standalone model is already filled with entities that are exposed as attributes.
+class ModelStandalone
+ super Model
+
+ redef var location = new Location.opaque_file("ModelStandalone")
+
+ # The first module
+ var mmodule0 = new MModule(self, null, "module0", location)
+
+ # The root Object class
+ var mclass_o = new MClass(mmodule0, "Object", location, null, interface_kind, public_visibility)
+
+ # The introduction of `mclass_o`
+ var mclassdef_o = new MClassDef(mmodule0, mclass_o.mclass_type, location)
+end
+
+# A standalone model with the common class diamond-hierarchy ABCD
+class ModelDiamond
+ super ModelStandalone
+
+ # A, a simple subclass of Object
+ var mclass_a = new MClass(mmodule0, "A", location, null, concrete_kind, public_visibility)
+
+ # The introduction of `mclass_a`
+ var mclassdef_a: MClassDef do
+ var res = new MClassDef(mmodule0, mclass_a.mclass_type, location)
+ res.set_supertypes([mclass_o.mclass_type])
+ res.add_in_hierarchy
+ return res
+ end
+
+ # B, a subclass of A (`mclass_a`)
+ var mclass_b = new MClass(mmodule0, "B", location, null, concrete_kind, public_visibility)
+
+ # The introduction of `mclass_b`
+ var mclassdef_b: MClassDef do
+ var res = new MClassDef(mmodule0, mclass_b.mclass_type, location)
+ res.set_supertypes([mclass_a.mclass_type])
+ res.add_in_hierarchy
+ return res
+ end
+
+ # C, another subclass of A (`mclass_a`)
+ var mclass_c = new MClass(mmodule0, "C", location, null, concrete_kind, public_visibility)
+
+ # The introduction of `mclass_c`
+ var mclassdef_c: MClassDef do
+ var res = new MClassDef(mmodule0, mclass_c.mclass_type, location)
+ res.set_supertypes([mclass_a.mclass_type])
+ res.add_in_hierarchy
+ return res
+ end
+
+ # D, a multiple subclass of B (`mclass_b`) and C (`mclass_c`)
+ var mclass_d = new MClass(mmodule0, "D", location, null, concrete_kind, public_visibility)
+
+ # The introduction of `mclass_d`
+ var mclassdef_d: MClassDef do
+ var res = new MClassDef(mmodule0, mclass_d.mclass_type, location)
+ res.set_supertypes([mclass_b.mclass_type, mclass_c.mclass_type])
+ res.add_in_hierarchy
+ return res
+ end
+end
nitlanguage / nit.git / blobdiff