return self.visit_expr_subtype(nexpr, self.type_bool(nexpr))
end
-
fun check_expr_cast(node: ANode, nexpr: AExpr, ntype: AType): nullable MType
do
var sub = nexpr.mtype
var mproperty = self.try_get_mproperty_by_name2(node, unsafe_type, name)
if name == "new" and mproperty == null then
- name = "init"
+ name = "defaultinit"
mproperty = self.try_get_mproperty_by_name2(node, unsafe_type, name)
+ if mproperty == null then
+ name = "init"
+ mproperty = self.try_get_mproperty_by_name2(node, unsafe_type, name)
+ end
end
if mproperty == null then
if recv_is_self then
- self.modelbuilder.error(node, "Error: method or variable `{name}` unknown in `{recvtype}`.")
+ # FIXME This test was added to display a more explicit error when a potential duplication of root object class.
+ if name == "init" then
+ self.modelbuilder.error(node, "Possible duplication of the root class `Object`")
+ else
+ self.modelbuilder.error(node, "Error: method or variable `{name}` unknown in `{recvtype}`.")
+ end
else if recvtype.need_anchor then
self.modelbuilder.error(node, "Error: method `{name}` does not exists in `{recvtype}: {unsafe_type}`.")
else
# The `build_callsite_by_propdef` builds the callsite directly with the `mprodef` passed in argument.
fun build_callsite_by_propdef(node: ANode, recvtype: MType, mpropdef: MMethodDef, recv_is_self: Bool): nullable CallSite
do
- var msignature = mpropdef.new_msignature or else mpropdef.msignature
+ var msignature = mpropdef.msignature
if msignature == null then return null # skip error
msignature = resolve_for(msignature, recvtype, recv_is_self).as(MSignature)
return build_callsite_by_name(node, recvtype, name, recv_is_self)
end
-
# Visit the expressions of args and check their conformity with the corresponding type in signature
# The point of this method is to handle varargs correctly
# Note: The signature must be correctly adapted
# Other cases are managed later
end
-
#debug("CALL {unsafe_type}.{msignature}")
# Associate each parameter to a position in the arguments
end
return res
end
+
+ # Type the expression as if located in `visited_mpropdef`
+ # `TypeVisitor` and `PostTypingVisitor` will be used to do the typing, see them for more information.
+ #
+ # `visited_mpropdef`: Correspond to the evaluation context in which the expression is located.
+ fun do_typing(modelbuilder: ModelBuilder, visited_mpropdef: MPropDef)
+ do
+ var type_visitor = new TypeVisitor(modelbuilder, visited_mpropdef)
+ type_visitor.visit_stmt(self)
+ var post_visitor = new PostTypingVisitor(type_visitor)
+ post_visitor.enter_visit(self)
+ end
end
redef class ABlockExpr
end
end
-
redef class AContinueExpr
redef fun accept_typing(v)
do
end
end
-
redef class ANotExpr
redef fun accept_typing(v)
do
# get the constructor
var callsite
if self isa ACrangeExpr then
- callsite = v.build_callsite_by_name(self, mtype, "init", false)
+ callsite = v.build_callsite_by_name(self, mtype, "defaultinit", false)
else if self isa AOrangeExpr then
callsite = v.build_callsite_by_name(self, mtype, "without_last", false)
else
var args = compute_raw_arguments
- callsite.check_signature(v, node, args)
+ if not self isa ACallrefExpr then
+ callsite.check_signature(v, node, args)
+ end
if callsite.mproperty.is_init then
var vmpropdef = v.mpropdef
redef fun compute_raw_arguments do return new Array[AExpr]
end
-
redef class ACallExpr
redef fun property_name do return n_qid.n_id.text
redef fun property_node do return n_qid
end
redef class AInitExpr
- redef fun property_name do return "init"
+ redef fun property_name do if n_args.n_exprs.is_empty then return "init" else return "defaultinit"
redef fun property_node do return n_kwinit
redef fun compute_raw_arguments do return n_args.to_a
end
redef fun accept_typing(v)
do
super # do the job as if it was a real call
-
- # TODO: inspect self.callsite to get information about the method
var res = callsite.mproperty
- # TODO: return a functionnal type
- self.mtype = null
- v.error(self, "Error: NOT YET IMPLEMENTED callref expressions.")
+ var msignature = callsite.mpropdef.msignature
+ var recv = callsite.recv
+ assert msignature != null
+ var arity = msignature.mparameters.length
+
+ var routine_type_name = "ProcRef"
+ if msignature.return_mtype != null then
+ routine_type_name = "FunRef"
+ end
+
+ var target_routine_class = "{routine_type_name}{arity}"
+ var routine_mclass = v.get_mclass(self, target_routine_class)
+
+ if routine_mclass == null then
+ v.error(self, "Error: missing functional types, try `import functional`")
+ return
+ end
+
+ var types_list = new Array[MType]
+ for param in msignature.mparameters do
+ if param.is_vararg then
+ types_list.push(v.mmodule.array_type(param.mtype))
+ else
+ types_list.push(param.mtype)
+ end
+ end
+ if msignature.return_mtype != null then
+ types_list.push(msignature.return_mtype.as(not null))
+ end
+
+ # Why we need an anchor :
+ #
+ # ~~~~nitish
+ # class A[E]
+ # def toto(x: E) do print "{x}"
+ # end
+ #
+ # var a = new A[Int]
+ # var f = &a.toto # without anchor : ProcRef1[E]
+ # # with anchor : ProcRef[Int]
+ # ~~~~
+ # However, we can only anchor if we can resolve every formal
+ # parameter, here's an example where we can't.
+ # ~~~~nitish
+ # class A[E]
+ # fun bar: A[E] do return self
+ # fun foo: Fun0[A[E]] do return &bar # here we can't anchor
+ # end
+ # var f1 = a1.foo # when this expression will be evaluated,
+ # # `a1` will anchor `&bar` returned by `foo`.
+ # print f1.call
+ # ~~~~
+ var routine_type = routine_mclass.get_mtype(types_list)
+ if not recv.need_anchor then
+ routine_type = routine_type.anchor_to(v.mmodule, recv.as(MClassType))
+ end
+ is_typed = true
+ self.mtype = routine_type
end
end
return
end
- var msignature = superprop.new_msignature or else superprop.msignature.as(not null)
+ var msignature = superprop.msignature.as(not null)
msignature = v.resolve_for(msignature, recvtype, true).as(MSignature)
var callsite = new CallSite(hot_location, recvtype, v.mmodule, v.anchor, true, superprop.mproperty, superprop, msignature, false)
end
end
-
redef class AAttrAssignExpr
redef fun accept_typing(v)
do
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