module modelize_property
import modelize_class
+import annotation
redef class ToolContext
var modelize_property_phase: Phase = new ModelizePropertyPhase(self, [modelize_class_phase])
var mparameters = new Array[MParameter]
var anode: nullable ANode = null
for npropdef in nclassdef.n_propdefs do
- if npropdef isa AAttrPropdef and npropdef.n_expr == null then
+ if npropdef isa AAttrPropdef then
if npropdef.mpropdef == null then return # Skip broken attribute
+ var at = npropdef.get_single_annotation("noinit", self)
+ if at != null then
+ npropdef.noinit = true
+ if npropdef.n_expr != null then
+ self.error(at, "Error: `noinit` attributes cannot have an initial value")
+ end
+ continue # Skip noinit attributes
+ end
+ if npropdef.n_expr != null then continue
var paramname = npropdef.mpropdef.mproperty.name.substring_from(1)
var ret_type = npropdef.mpropdef.static_mtype
if ret_type == null then return
redef class AAttrPropdef
redef type MPROPDEF: MAttributeDef
+ # Is the node tagged `noinit`?
+ var noinit = false
+
# The associated getter (read accessor) if any
var mreadpropdef: nullable MMethodDef writable
# The associated setter (write accessor) if any
else
# New attribute style
var nid2 = self.n_id2.as(not null)
- var mprop = new MAttribute(mclassdef, "@" + name, none_visibility)
+ var mprop = new MAttribute(mclassdef, "_" + name, private_visibility)
var mpropdef = new MAttributeDef(mclassdef, mprop, self.location)
self.mpropdef = mpropdef
modelbuilder.mpropdef2npropdef[mpropdef] = self
modelbuilder.mpropdef2npropdef[mreadpropdef] = self
mreadpropdef.mdoc = mpropdef.mdoc
+ 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 writename = name + "="
var nwritable = self.n_writable
+ 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
+ end
var mwriteprop = modelbuilder.try_get_mproperty_by_name(nid2, mclassdef, writename).as(nullable MMethod)
var nwkwredef: nullable Token = null
if nwritable != null then nwkwredef = nwritable.n_kwredef
+ if atwritable != null then nwkwredef = atwritable.n_kwredef
if mwriteprop == null then
var mvisibility
if nwritable != null then
mvisibility = new_property_visibility(modelbuilder, mclassdef, nwritable.n_visibility)
+ else if atwritable != null then
+ mvisibility = new_property_visibility(modelbuilder, mclassdef, atwritable.n_visibility)
else
mvisibility = private_visibility
end
if not self.check_redef_keyword(modelbuilder, mclassdef, nwkwredef or else n_kwredef, true, mwriteprop) then return
if nwritable != null then
check_redef_property_visibility(modelbuilder, nwritable.n_visibility, mwriteprop)
+ else if atwritable != null then
+ check_redef_property_visibility(modelbuilder, atwritable.n_visibility, mwriteprop)
end
end
mclassdef.mprop2npropdef[mwriteprop] = self
self.mpropdef = mpropdef
modelbuilder.mpropdef2npropdef[mpropdef] = self
set_doc(mpropdef)
+
+ var atfixed = get_single_annotation("fixed", modelbuilder)
+ if atfixed != null then
+ mpropdef.is_fixed = true
+ end
end
redef fun build_signature(modelbuilder)
modelbuilder.check_visibility(n_type, bound, mpropdef)
- # Fast case: the bound is not a formal type
- if not bound isa MVirtualType then return
-
var mclassdef = mpropdef.mclassdef
var mmodule = mclassdef.mmodule
var anchor = mclassdef.bound_mtype
- # Slow case: progress on each resolution until: (i) we loop, or (ii) we found a non formal type
- var seen = [self.mpropdef.mproperty.mvirtualtype]
- loop
- if seen.has(bound) then
+ # Check circularity
+ if bound isa MVirtualType then
+ # Slow case: progress on each resolution until: (i) we loop, or (ii) we found a non formal type
+ var seen = [self.mpropdef.mproperty.mvirtualtype]
+ loop
+ if seen.has(bound) then
+ seen.add(bound)
+ modelbuilder.error(self, "Error: circularity of virtual type definition: {seen.join(" -> ")}")
+ return
+ end
seen.add(bound)
- modelbuilder.error(self, "Error: circularity of virtual type definition: {seen.join(" -> ")}")
- return
+ var next = bound.lookup_bound(mmodule, anchor)
+ if not next isa MVirtualType then break
+ bound = next
+ end
+ end
+
+ # Check redefinitions
+ bound = mpropdef.bound.as(not null)
+ for p in mpropdef.mproperty.lookup_super_definitions(mmodule, anchor) do
+ var supbound = p.bound.as(not null)
+ if p.is_fixed then
+ modelbuilder.error(self, "Redef Error: Virtual type {mpropdef.mproperty} is fixed in super-class {p.mclassdef.mclass}")
+ break
+ 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.")
+ break
+ end
+ if not bound.is_subtype(mmodule, anchor, supbound) then
+ modelbuilder.error(n_type, "Redef Error: Wrong bound type. Found {bound}, expected a subtype of {supbound}, as in {p}.")
+ break
end
- seen.add(bound)
- var next = bound.lookup_bound(mmodule, anchor)
- if not next isa MVirtualType then break
- bound = next
end
end
end
nitlanguage / nit.git / blobdiff