redef class ModelBuilder
# Register the npropdef associated to each mpropdef
# FIXME: why not refine the `MPropDef` class with a nullable attribute?
- var mpropdef2npropdef: HashMap[MPropDef, APropdef] = new HashMap[MPropDef, APropdef]
+ var mpropdef2npropdef = new HashMap[MPropDef, APropdef]
# Build the properties of `nclassdef`.
# REQUIRE: all superclasses are built.
# Are we a refinement
if not mclassdef.is_intro then return
- var mmodule = nclassdef.mclassdef.mmodule
-
# Look for the init in Object, or create it
if mclassdef.mclass.name == "Object" and the_root_init_mmethod == null then
# Create the implicit root-init method
if mpropdef.mproperty.is_root_init then
assert defined_init == null
defined_init = mpropdef
- else
- # An explicit old-style init, so return
+ else if mpropdef.mproperty.name == "init" then
+ # An explicit old-style init named "init", so return
return
end
end
if not nclassdef isa AStdClassdef then return
- # Do we inherit a old-style constructor?
- var combine = new Array[MMethod] # old-style constructors without arguments
- var inhc: nullable MClass = null # single super-class with a constructor with arguments
- if defined_init == null then for st in mclassdef.supertypes do
- var c = st.mclass
- if not c.kind.need_init then continue
- st = st.anchor_to(mmodule, mclassdef.bound_mtype)
- var candidate = self.try_get_mproperty_by_name2(nclassdef, mmodule, st, "init").as(nullable MMethod)
- if candidate != null then
- if candidate.is_root_init then continue
- if candidate.intro.msignature != null then
- if candidate.intro.msignature.arity == 0 then
- combine.add(candidate)
- continue
- end
- end
- end
- var inhc2 = c.inherit_init_from
- if inhc2 == null then inhc2 = c
- if inhc2 == inhc then continue
- if inhc != null then
- self.error(nclassdef, "Error: Cannot provide a defaut constructor: conflict for {inhc} and {c}")
- else
- inhc = inhc2
- end
- end
-
# Collect undefined attributes
var mparameters = new Array[MParameter]
var initializers = new Array[MProperty]
- var anode: nullable ANode = null
for npropdef in nclassdef.n_propdefs do
+ if npropdef isa AMethPropdef then
+ if npropdef.mpropdef == null then return # Skip broken attribute
+ var at = npropdef.get_single_annotation("autoinit", self)
+ if at == null then continue # Skip non tagged init
+
+ var sig = npropdef.mpropdef.msignature
+ if sig == null then continue # Skip broken method
+
+ if not npropdef.mpropdef.is_intro then
+ self.error(at, "Error: `autoinit` cannot be set on redefinitions")
+ continue
+ end
+
+ for param in sig.mparameters do
+ var ret_type = param.mtype
+ var mparameter = new MParameter(param.name, ret_type, false)
+ mparameters.add(mparameter)
+ end
+ initializers.add(npropdef.mpropdef.mproperty)
+ end
if npropdef isa AAttrPropdef then
if npropdef.mpropdef == null then return # Skip broken attribute
var at = npropdef.get_single_annotation("noinit", self)
# Add the setter to the list
initializers.add(msetter.mproperty)
end
- if anode == null then anode = npropdef
end
end
- if anode == null then anode = nclassdef
-
- if combine.is_empty and inhc != null then
- if not mparameters.is_empty then
- self.error(anode,"Error: {mclassdef} cannot inherit constructors from {inhc} because there is attributes without initial values: {mparameters.join(", ")}")
- return
- end
-
- # TODO: actively inherit the consturctor
- self.toolcontext.info("{mclassdef} inherits all constructors from {inhc}", 3)
- #mclassdef.mclass.inherit_init_from = inhc
- #return
- end
-
- if not combine.is_empty and inhc != null then
- self.error(nclassdef, "Error: Cannot provide a defaut constructor: conflict for {combine.join(", ")} and {inhc}")
- return
- end
- if not combine.is_empty then
- if mparameters.is_empty and combine.length == 1 then
- # No need to create a local init, the inherited one is enough
- inhc = combine.first.intro_mclassdef.mclass
- mclassdef.mclass.inherit_init_from = inhc
- self.toolcontext.info("{mclassdef} inherits all constructors from {inhc}", 3)
- return
- end
- nclassdef.super_inits = combine
- var mprop = new MMethod(mclassdef, "init", mclassdef.mclass.visibility)
- var mpropdef = new MMethodDef(mclassdef, mprop, nclassdef.location)
- var msignature = new MSignature(mparameters, null)
- mpropdef.msignature = msignature
- mprop.is_init = true
- nclassdef.mfree_init = mpropdef
- self.toolcontext.info("{mclassdef} gets a free empty constructor {mpropdef}{msignature}", 3)
- return
- end
if the_root_init_mmethod == null then return
- # Look for nost-specific new-stype init definitions
+ # Look for most-specific new-stype init definitions
var spropdefs = the_root_init_mmethod.lookup_super_definitions(mclassdef.mmodule, mclassdef.bound_mtype)
if spropdefs.is_empty then
toolcontext.fatal_error(nclassdef.location, "Fatal error: {mclassdef} does not specialize {the_root_init_mmethod.intro_mclassdef}. Possible duplication of the root class `Object`?")
# Can we just inherit?
if spropdefs.length == 1 and mparameters.is_empty and defined_init == null then
self.toolcontext.info("{mclassdef} inherits the basic constructor {longest}", 3)
+ mclassdef.mclass.root_init = longest
return
end
var msignature = new MSignature(mparameters, null)
defined_init.new_msignature = msignature
self.toolcontext.info("{mclassdef} extends its basic constructor signature to {defined_init}{msignature}", 3)
+ mclassdef.mclass.root_init = defined_init
return
end
mpropdef.msignature = new MSignature(new Array[MParameter], null) # always an empty real signature
nclassdef.mfree_init = mpropdef
self.toolcontext.info("{mclassdef} gets a free constructor for attributes {mpropdef}{msignature}", 3)
+ mclassdef.mclass.root_init = mpropdef
end
# Check the visibility of `mtype` as an element of the signature of `mpropdef`.
# Extract visibility information of the main part of `mtype`
# It is a case-by case
var vis_type: nullable MVisibility = null # The own visibility of the type
- var mmodule_type: nullable MModule = null # The origial module of the type
+ var mmodule_type: nullable MModule = null # The original module of the type
mtype = mtype.as_notnullable
if mtype isa MClassType then
vis_type = mtype.mclass.visibility
end
end
-redef class MClass
- # The class whose self inherit all the constructors.
- # FIXME: this is needed to implement the crazy constructor mixin thing of the of old compiler. We need to think what to do with since this cannot stay in the modelbuilder
- var inherit_init_from: nullable MClass = null
-end
-
redef class MPropDef
# Does the MPropDef contains a call to super or a call of a super-constructor?
# Subsequent phases of the frontend (esp. typing) set it if required
end
redef class AClassdef
- var build_properties_is_done: Bool = false
- # The list of super-constructor to call at the start of the free constructor
- # FIXME: this is needed to implement the crazy constructor thing of the of old compiler. We need to think what to do with since this cannot stay in the modelbuilder
- var super_inits: nullable Collection[MMethod] = null
+ var build_properties_is_done = false
# The free init (implicitely constructed by the class if required)
var mfree_init: nullable MMethodDef = null
end
+redef class MClass
+ # The base init of the class.
+ # Used to get the common new_msignature and initializers
+ #
+ # TODO: Where to put this information is not clear because unlike other
+ # informations, the initialisers are stable in a same class.
+ var root_init: nullable MMethodDef = null
+end
+
redef class MClassDef
# What is the `APropdef` associated to a `MProperty`?
# Used to check multiple definition of a property.
modelbuilder.error(nvisibility, "Error: The only legal visibility for properties in a private class is private.")
else if mvisibility == private_visibility then
assert nvisibility != null
- # Not yet
- # modelbuilder.warning(nvisibility, "Warning: private is unrequired since the only legal visibility for properties in a private class is private.")
+ modelbuilder.advice(nvisibility, "useless-visibility", "Warning: private is superfluous since the only legal visibility for properties in a private class is private.")
end
mvisibility = private_visibility
end
return mvisibility
end
- private fun set_doc(mpropdef: MPropDef)
+ private fun set_doc(mpropdef: MPropDef, modelbuilder: ModelBuilder)
do
var ndoc = self.n_doc
if ndoc != null then
var mdoc = ndoc.to_mdoc
mpropdef.mdoc = mdoc
mdoc.original_mentity = mpropdef
+ else if mpropdef.is_intro and mpropdef.mproperty.visibility >= protected_visibility then
+ modelbuilder.advice(self, "missing-doc", "Documentation warning: Undocumented property `{mpropdef.mproperty}`")
+ end
+
+ var at_deprecated = get_single_annotation("deprecated", modelbuilder)
+ if at_deprecated != null then
+ if not mpropdef.is_intro then
+ modelbuilder.error(self, "Error: method redefinition cannot be deprecated.")
+ else
+ var info = new MDeprecationInfo
+ ndoc = at_deprecated.n_doc
+ if ndoc != null then info.mdoc = ndoc.to_mdoc
+ mpropdef.mproperty.deprecation = info
+ end
end
end
var ntype = self.n_type
if ntype != null then
self.ret_type = modelbuilder.resolve_mtype(mmodule, mclassdef, ntype)
- if self.ret_type == null then return false # Skip errir
+ if self.ret_type == null then return false # Skip error
end
self.is_visited = true
if not is_init or n_kwredef != null then mprop = modelbuilder.try_get_mproperty_by_name(name_node, mclassdef, name).as(nullable MMethod)
if mprop == null and look_like_a_root_init(modelbuilder) then
mprop = modelbuilder.the_root_init_mmethod
+ var nb = n_block
+ if nb isa ABlockExpr and nb.n_expr.is_empty and n_doc == null then
+ modelbuilder.advice(self, "useless-init", "Warning: useless empty init in {mclassdef}")
+ end
end
if mprop == null then
var mvisibility = new_property_visibility(modelbuilder, mclassdef, self.n_visibility)
var mpropdef = new MMethodDef(mclassdef, mprop, self.location)
- set_doc(mpropdef)
+ set_doc(mpropdef, modelbuilder)
self.mpropdef = mpropdef
modelbuilder.mpropdef2npropdef[mpropdef] = self
var mmodule = mclassdef.mmodule
var nsig = self.n_signature
+ if mpropdef.mproperty.is_root_init and not mclassdef.is_intro then
+ var root_init = mclassdef.mclass.root_init
+ if root_init != null then
+ # Inherit the initializers by refinement
+ mpropdef.new_msignature = root_init.new_msignature
+ assert mpropdef.initializers.is_empty
+ mpropdef.initializers.add_all root_init.initializers
+ end
+ end
+
# Retrieve info from the signature AST
var param_names = new Array[String] # Names of parameters from the AST
var param_types = new Array[MType] # Types of parameters from the AST
msignature = new MSignature(mparameters, ret_type)
mpropdef.msignature = msignature
- mpropdef.is_abstract = self isa ADeferredMethPropdef
- mpropdef.is_intern = self isa AInternMethPropdef
- mpropdef.is_extern = self isa AExternPropdef
+ mpropdef.is_abstract = self.get_single_annotation("abstract", modelbuilder) != null
+ mpropdef.is_intern = self.get_single_annotation("intern", modelbuilder) != null
+ mpropdef.is_extern = self.n_extern_code_block != null or self.get_single_annotation("extern", modelbuilder) != null
end
redef fun check_signature(modelbuilder)
# Is the node tagged `noinit`?
var noinit = false
- # Is the node taggeg lazy?
+ # Is the node tagged lazy?
var is_lazy = false
- # The guard associated to a lasy attribute.
+ # The guard associated to a lazy attribute.
# Because some engines does not have a working `isset`,
- # this additionnal attribute is used to guard the lazy initialization.
+ # this additional attribute is used to guard the lazy initialization.
# TODO: to remove once isset is correctly implemented
var mlazypropdef: nullable MAttributeDef
var mclass = mclassdef.mclass
var name: String
- if self.n_id != null then
- name = self.n_id.text
- else
- name = self.n_id2.text
- end
+ name = self.n_id2.text
if mclass.kind == interface_kind or mclassdef.mclass.kind == enum_kind then
modelbuilder.error(self, "Error: Attempt to define attribute {name} in the interface {mclass}.")
modelbuilder.error(self, "Error: Attempt to define attribute {name} in the extern class {mclass}.")
end
- var nid = self.n_id
- if nid != null then
- # Old attribute style
- var mprop = modelbuilder.try_get_mproperty_by_name(nid, mclassdef, name)
- if mprop == null then
- var mvisibility = new_property_visibility(modelbuilder, mclassdef, self.n_visibility)
- mprop = new MAttribute(mclassdef, name, mvisibility)
- if not self.check_redef_keyword(modelbuilder, mclassdef, self.n_kwredef, false, mprop) then return
- else
- assert mprop isa MAttribute
- check_redef_property_visibility(modelbuilder, self.n_visibility, mprop)
- if not self.check_redef_keyword(modelbuilder, mclassdef, self.n_kwredef, true, mprop) then return
- end
- mclassdef.mprop2npropdef[mprop] = self
-
- var mpropdef = new MAttributeDef(mclassdef, mprop, self.location)
- self.mpropdef = mpropdef
- modelbuilder.mpropdef2npropdef[mpropdef] = self
- set_doc(mpropdef)
+ # New attribute style
+ var nid2 = self.n_id2
+ var mprop = new MAttribute(mclassdef, "_" + name, private_visibility)
+ var mpropdef = new MAttributeDef(mclassdef, mprop, self.location)
+ self.mpropdef = mpropdef
+ modelbuilder.mpropdef2npropdef[mpropdef] = self
- var nreadable = self.n_readable
- if nreadable != null then modelbuilder.error(nreadable, "Error: old-style getter no more supported")
- var nwritable = self.n_writable
- if nwritable != null then modelbuilder.error(nwritable, "Error: old-style setter no more supported")
+ var readname = name
+ var mreadprop = modelbuilder.try_get_mproperty_by_name(nid2, mclassdef, readname).as(nullable MMethod)
+ if mreadprop == null then
+ var mvisibility = new_property_visibility(modelbuilder, mclassdef, self.n_visibility)
+ mreadprop = new MMethod(mclassdef, readname, mvisibility)
+ if not self.check_redef_keyword(modelbuilder, mclassdef, n_kwredef, false, mreadprop) then return
+ mreadprop.deprecation = mprop.deprecation
else
- # New attribute style
- var nid2 = self.n_id2.as(not null)
- var mprop = new MAttribute(mclassdef, "_" + name, private_visibility)
- var mpropdef = new MAttributeDef(mclassdef, mprop, self.location)
- self.mpropdef = mpropdef
- modelbuilder.mpropdef2npropdef[mpropdef] = self
- set_doc(mpropdef)
-
- var readname = name
- var mreadprop = modelbuilder.try_get_mproperty_by_name(nid2, mclassdef, readname).as(nullable MMethod)
- if mreadprop == null then
- var mvisibility = new_property_visibility(modelbuilder, mclassdef, self.n_visibility)
- mreadprop = new MMethod(mclassdef, readname, mvisibility)
- if not self.check_redef_keyword(modelbuilder, mclassdef, n_kwredef, false, mreadprop) then return
- else
- if not self.check_redef_keyword(modelbuilder, mclassdef, n_kwredef, true, mreadprop) then return
- check_redef_property_visibility(modelbuilder, self.n_visibility, mreadprop)
+ if not self.check_redef_keyword(modelbuilder, mclassdef, n_kwredef, true, mreadprop) then return
+ check_redef_property_visibility(modelbuilder, self.n_visibility, mreadprop)
+ end
+ mclassdef.mprop2npropdef[mreadprop] = self
+
+ var mreadpropdef = new MMethodDef(mclassdef, mreadprop, self.location)
+ self.mreadpropdef = mreadpropdef
+ modelbuilder.mpropdef2npropdef[mreadpropdef] = self
+ set_doc(mreadpropdef, modelbuilder)
+ mpropdef.mdoc = mreadpropdef.mdoc
+
+ var atlazy = self.get_single_annotation("lazy", modelbuilder)
+ if atlazy != null then
+ if n_expr == null then
+ modelbuilder.error(atlazy, "Error: a lazy attribute needs a value")
end
- mclassdef.mprop2npropdef[mreadprop] = self
-
- var mreadpropdef = new MMethodDef(mclassdef, mreadprop, self.location)
- self.mreadpropdef = mreadpropdef
- modelbuilder.mpropdef2npropdef[mreadpropdef] = self
- mreadpropdef.mdoc = mpropdef.mdoc
+ is_lazy = true
+ var mlazyprop = new MAttribute(mclassdef, "lazy _" + name, none_visibility)
+ var mlazypropdef = new MAttributeDef(mclassdef, mlazyprop, self.location)
+ self.mlazypropdef = mlazypropdef
+ end
- var atlazy = self.get_single_annotation("lazy", modelbuilder)
- if atlazy != null then
- if n_expr == null then
- modelbuilder.error(atlazy, "Error: a lazy attribute needs a value")
- end
- is_lazy = true
- var mlazyprop = new MAttribute(mclassdef, "lazy _" + name, none_visibility)
- var mlazypropdef = new MAttributeDef(mclassdef, mlazyprop, self.location)
- self.mlazypropdef = mlazypropdef
+ var atreadonly = self.get_single_annotation("readonly", modelbuilder)
+ if atreadonly != null then
+ if n_expr == null then
+ modelbuilder.error(atreadonly, "Error: a readonly attribute needs a value")
end
+ # No setter, so just leave
+ return
+ end
- var atreadonly = self.get_single_annotation("readonly", modelbuilder)
- if atreadonly != null then
- if n_expr == null then
- modelbuilder.error(atreadonly, "Error: a readonly attribute needs a value")
- end
- # No setter, so just leave
- return
+ var writename = name + "="
+ var atwritable = self.get_single_annotation("writable", modelbuilder)
+ if atwritable != null then
+ if not atwritable.n_args.is_empty then
+ writename = atwritable.arg_as_id(modelbuilder) or else writename
end
-
- var writename = name + "="
- var nwritable = self.n_writable
- if nwritable != null then modelbuilder.error(nwritable, "Error: old-style setter no more supported")
- var atwritable = self.get_single_annotation("writable", modelbuilder)
+ end
+ var mwriteprop = modelbuilder.try_get_mproperty_by_name(nid2, mclassdef, writename).as(nullable MMethod)
+ var nwkwredef: nullable Token = null
+ if atwritable != null then nwkwredef = atwritable.n_kwredef
+ if mwriteprop == null then
+ var mvisibility
if atwritable != null then
- if not atwritable.n_args.is_empty then
- writename = atwritable.arg_as_id(modelbuilder) or else writename
- end
- end
- var mwriteprop = modelbuilder.try_get_mproperty_by_name(nid2, mclassdef, writename).as(nullable MMethod)
- var nwkwredef: nullable Token = null
- if atwritable != null then nwkwredef = atwritable.n_kwredef
- if mwriteprop == null then
- var mvisibility
- if atwritable != null then
- mvisibility = new_property_visibility(modelbuilder, mclassdef, atwritable.n_visibility)
- else
- mvisibility = private_visibility
- end
- mwriteprop = new MMethod(mclassdef, writename, mvisibility)
- if not self.check_redef_keyword(modelbuilder, mclassdef, nwkwredef, false, mwriteprop) then return
+ mvisibility = new_property_visibility(modelbuilder, mclassdef, atwritable.n_visibility)
else
- if not self.check_redef_keyword(modelbuilder, mclassdef, nwkwredef or else n_kwredef, true, mwriteprop) then return
- if atwritable != null then
- check_redef_property_visibility(modelbuilder, atwritable.n_visibility, mwriteprop)
- end
+ mvisibility = private_visibility
+ end
+ mwriteprop = new MMethod(mclassdef, writename, mvisibility)
+ if not self.check_redef_keyword(modelbuilder, mclassdef, nwkwredef, false, mwriteprop) then return
+ mwriteprop.deprecation = mprop.deprecation
+ else
+ if not self.check_redef_keyword(modelbuilder, mclassdef, nwkwredef or else n_kwredef, true, mwriteprop) then return
+ if atwritable != null then
+ check_redef_property_visibility(modelbuilder, atwritable.n_visibility, mwriteprop)
end
- mclassdef.mprop2npropdef[mwriteprop] = self
-
- var mwritepropdef = new MMethodDef(mclassdef, mwriteprop, self.location)
- self.mwritepropdef = mwritepropdef
- modelbuilder.mpropdef2npropdef[mwritepropdef] = self
- mwritepropdef.mdoc = mpropdef.mdoc
end
+ mclassdef.mprop2npropdef[mwriteprop] = self
+
+ var mwritepropdef = new MMethodDef(mclassdef, mwriteprop, self.location)
+ self.mwritepropdef = mwritepropdef
+ modelbuilder.mpropdef2npropdef[mwritepropdef] = self
+ mwritepropdef.mdoc = mpropdef.mdoc
end
redef fun build_signature(modelbuilder)
do
var mpropdef = self.mpropdef
- if mpropdef == null then return # Error thus skiped
+ if mpropdef == null then return # Error thus skipped
var mclassdef = mpropdef.mclassdef
var mmodule = mclassdef.mmodule
var mtype: nullable MType = null
if mtype == null then return
end
- # Inherit the type from the getter (usually an abstact getter)
+ # Inherit the type from the getter (usually an abstract getter)
if mtype == null and mreadpropdef != null and not mreadpropdef.is_intro then
var msignature = mreadpropdef.mproperty.intro.msignature
- if msignature == null then return # Error, thus skiped
+ if msignature == null then return # Error, thus skipped
mtype = msignature.return_mtype
end
else if ntype != null then
if nexpr isa ANewExpr then
var xmtype = modelbuilder.resolve_mtype(mmodule, mclassdef, nexpr.n_type)
- if xmtype == mtype and modelbuilder.toolcontext.opt_warn.value >= 2 then
- modelbuilder.warning(ntype, "Warning: useless type definition")
+ if xmtype == mtype then
+ modelbuilder.advice(ntype, "useless-type", "Warning: useless type definition")
end
end
end
var mwritepropdef = self.mwritepropdef
if mwritepropdef != null then
var name: String
- if n_id != null then
- name = n_id.text.substring_from(1)
- else
- name = n_id2.text
- end
+ name = n_id2.text
var mparameter = new MParameter(name, mtype, false)
var msignature = new MSignature([mparameter], null)
mwritepropdef.msignature = msignature
redef fun check_signature(modelbuilder)
do
var mpropdef = self.mpropdef
- if mpropdef == null then return # Error thus skiped
- var mclassdef = mpropdef.mclassdef
- var mmodule = mclassdef.mmodule
+ if mpropdef == null then return # Error thus skipped
var ntype = self.n_type
var mtype = self.mpropdef.static_mtype
- if mtype == null then return # Error thus skiped
+ if mtype == null then return # Error thus skipped
# Lookup for signature in the precursor
# FIXME all precursors should be considered
var mvisibility = new_property_visibility(modelbuilder, mclassdef, self.n_visibility)
mprop = new MVirtualTypeProp(mclassdef, name, mvisibility)
for c in name.chars do if c >= 'a' and c<= 'z' then
- modelbuilder.warning(n_id, "Warning: lowercase in the virtual type {name}")
+ modelbuilder.warning(n_id, "bad-type-name", "Warning: lowercase in the virtual type {name}")
break
end
if not self.check_redef_keyword(modelbuilder, mclassdef, self.n_kwredef, false, mprop) then return
var mpropdef = new MVirtualTypeDef(mclassdef, mprop, self.location)
self.mpropdef = mpropdef
modelbuilder.mpropdef2npropdef[mpropdef] = self
- set_doc(mpropdef)
+ set_doc(mpropdef, modelbuilder)
var atfixed = get_single_annotation("fixed", modelbuilder)
if atfixed != null then
redef fun build_signature(modelbuilder)
do
var mpropdef = self.mpropdef
- if mpropdef == null then return # Error thus skiped
+ if mpropdef == null then return # Error thus skipped
var mclassdef = mpropdef.mclassdef
var mmodule = mclassdef.mmodule
var mtype: nullable MType = null
redef fun check_signature(modelbuilder)
do
var mpropdef = self.mpropdef
- if mpropdef == null then return # Error thus skiped
+ if mpropdef == null then return # Error thus skipped
var bound = self.mpropdef.bound
- if bound == null then return # Error thus skiped
+ if bound == null then return # Error thus skipped
modelbuilder.check_visibility(n_type, bound, mpropdef)
end
if p.mclassdef.mclass == mclassdef.mclass then
# Still a warning to pass existing bad code
- modelbuilder.warning(n_type, "Redef Error: a virtual type cannot be refined.")
+ modelbuilder.warning(n_type, "refine-type", "Redef Error: a virtual type cannot be refined.")
break
end
if not bound.is_subtype(mmodule, anchor, supbound) then
nitlanguage / nit.git / blobdiff