if res == null then
res = mclass
else
- error(anode, "Ambigous class name '{name}'; conflict between {mclass.full_name} and {res.full_name}")
+ error(anode, "Error: ambiguous class name `{name}`; conflict between `{mclass.full_name}` and `{res.full_name}`.")
return null
end
end
return res
end
+ # Like `try_get_mclass_by_name` but display an error message when the class is not found
+ fun get_mclass_by_name(node: ANode, mmodule: MModule, name: String): nullable MClass
+ do
+ var mclass = try_get_mclass_by_name(node, mmodule, name)
+ if mclass == null then
+ error(node, "Type Error: missing primitive class `{name}'.")
+ end
+ return mclass
+ end
+
# Return a property named `name` on the type `mtype` visible in the module `mmodule`.
# Visibility in modules is correctly handled.
# Protected properties are returned (it is up to the caller to check and reject protected properties).
assert ress.length > 1
var s = new Array[String]
for mprop in ress do s.add mprop.full_name
- self.error(anode, "Ambigous property name '{name}' for {mtype}; conflict between {s.join(" and ")}")
+ self.error(anode, "Error: ambiguous property name `{name}` for `{mtype}`; conflict between {s.join(" and ")}.")
end
self.try_get_mproperty_by_name2_cache[mmodule, mtype, name] = res
# Helper function to display an error on a node.
# Alias for `self.toolcontext.error(n.hot_location, text)`
- fun error(n: ANode, text: String)
+ fun error(n: nullable ANode, text: String)
do
- self.toolcontext.error(n.hot_location, text)
+ var l = null
+ if n != null then l = n.hot_location
+ self.toolcontext.error(l, text)
end
# Helper function to display a warning on a node.
# Alias for: `self.toolcontext.warning(n.hot_location, text)`
- fun warning(n: ANode, tag, text: String)
+ fun warning(n: nullable ANode, tag, text: String)
do
- self.toolcontext.warning(n.hot_location, tag, text)
+ var l = null
+ if n != null then l = n.hot_location
+ self.toolcontext.warning(l, tag, text)
end
# Helper function to display an advice on a node.
# Alias for: `self.toolcontext.advice(n.hot_location, text)`
- fun advice(n: ANode, tag, text: String)
+ fun advice(n: nullable ANode, tag, text: String)
do
- self.toolcontext.advice(n.hot_location, tag, text)
+ var l = null
+ if n != null then l = n.hot_location
+ self.toolcontext.advice(l, tag, text)
end
# Force to get the primitive method named `name` on the type `recv` or do a fatal error on `n`
if res == null then
var l = null
if n != null then l = n.hot_location
- self.toolcontext.fatal_error(l, "Fatal Error: {recv} must have a property named {name}.")
+ self.toolcontext.fatal_error(l, "Fatal Error: `{recv}` must have a property named `{name}`.")
abort
end
return res
end
+
+ # Return the static type associated to the node `ntype`.
+ # `mmodule` and `mclassdef` is the context where the call is made (used to understand formal types)
+ # In case of problem, an error is displayed on `ntype` and null is returned.
+ # FIXME: the name "resolve_mtype" is awful
+ fun resolve_mtype_unchecked(mmodule: MModule, mclassdef: nullable MClassDef, ntype: AType, with_virtual: Bool): nullable MType
+ do
+ var name = ntype.n_id.text
+ var res: MType
+
+ # Check virtual type
+ if mclassdef != null and with_virtual then
+ var prop = try_get_mproperty_by_name(ntype, mclassdef, name).as(nullable MVirtualTypeProp)
+ if prop != null then
+ if not ntype.n_types.is_empty then
+ error(ntype, "Type Error: formal type `{name}` cannot have formal parameters.")
+ end
+ res = prop.mvirtualtype
+ if ntype.n_kwnullable != null then res = res.as_nullable
+ ntype.mtype = res
+ return res
+ end
+ end
+
+ # Check parameter type
+ if mclassdef != null then
+ for p in mclassdef.mclass.mparameters do
+ if p.name != name then continue
+
+ if not ntype.n_types.is_empty then
+ error(ntype, "Type Error: formal type `{name}` cannot have formal parameters.")
+ end
+
+ res = p
+ if ntype.n_kwnullable != null then res = res.as_nullable
+ ntype.mtype = res
+ return res
+ end
+ end
+
+ # Check class
+ var mclass = try_get_mclass_by_name(ntype, mmodule, name)
+ if mclass != null then
+ var arity = ntype.n_types.length
+ if arity != mclass.arity then
+ if arity == 0 then
+ error(ntype, "Type Error: `{mclass.signature_to_s}` is a generic class.")
+ else if mclass.arity == 0 then
+ error(ntype, "Type Error: `{name}` is not a generic class.")
+ else
+ error(ntype, "Type Error: expected {mclass.arity} formal argument(s) for `{mclass.signature_to_s}`; got {arity}.")
+ end
+ return null
+ end
+ if arity == 0 then
+ res = mclass.mclass_type
+ if ntype.n_kwnullable != null then res = res.as_nullable
+ ntype.mtype = res
+ return res
+ else
+ var mtypes = new Array[MType]
+ for nt in ntype.n_types do
+ var mt = resolve_mtype_unchecked(mmodule, mclassdef, nt, with_virtual)
+ if mt == null then return null # Forward error
+ mtypes.add(mt)
+ end
+ res = mclass.get_mtype(mtypes)
+ if ntype.n_kwnullable != null then res = res.as_nullable
+ ntype.mtype = res
+ return res
+ end
+ end
+
+ # If everything fail, then give up :(
+ error(ntype, "Error: class `{name}` not found in module `{mmodule}`.")
+ return null
+ end
+
+ # Return the static type associated to the node `ntype`.
+ # `mmodule` and `mclassdef` is the context where the call is made (used to understand formal types)
+ # In case of problem, an error is displayed on `ntype` and null is returned.
+ # FIXME: the name "resolve_mtype" is awful
+ fun resolve_mtype(mmodule: MModule, mclassdef: nullable MClassDef, ntype: AType): nullable MType
+ do
+ var mtype = ntype.mtype
+ if mtype == null then mtype = resolve_mtype_unchecked(mmodule, mclassdef, ntype, true)
+ if mtype == null then return null # Forward error
+
+ if ntype.checked_mtype then return mtype
+ if mtype isa MGenericType then
+ var mclass = mtype.mclass
+ for i in [0..mclass.arity[ do
+ var intro = mclass.try_intro
+ if intro == null then return null # skip error
+ var bound = intro.bound_mtype.arguments[i]
+ var nt = ntype.n_types[i]
+ var mt = resolve_mtype(mmodule, mclassdef, nt)
+ if mt == null then return null # forward error
+ var anchor
+ if mclassdef != null then anchor = mclassdef.bound_mtype else anchor = null
+ if not check_subtype(nt, mmodule, anchor, mt, bound) then
+ error(nt, "Type Error: expected `{bound}`, got `{mt}`.")
+ return null
+ end
+ end
+ end
+ ntype.checked_mtype = true
+ return mtype
+ end
+
+ # Check that `sub` is a subtype of `sup`.
+ # Do not display an error message.
+ #
+ # This method is used a an entry point for the modelize phase to test static subtypes.
+ # Some refinements could redefine it to collect statictics.
+ fun check_subtype(node: ANode, mmodule: MModule, anchor: nullable MClassType, sub, sup: MType): Bool
+ do
+ return sub.is_subtype(mmodule, anchor, sup)
+ end
+
+ # Check that `sub` and `sup` are equvalent types.
+ # Do not display an error message.
+ #
+ # This method is used a an entry point for the modelize phase to test static equivalent types.
+ # Some refinements could redefine it to collect statictics.
+ fun check_sametype(node: ANode, mmodule: MModule, anchor: nullable MClassType, sub, sup: MType): Bool
+ do
+ return sub.is_subtype(mmodule, anchor, sup) and sup.is_subtype(mmodule, anchor, sub)
+ end
+end
+
+redef class AType
+ # The mtype associated to the node
+ var mtype: nullable MType = null
+
+ # Is the mtype a valid one?
+ var checked_mtype: Bool = false
end
redef class AVisibility
redef class ADoc
private var mdoc_cache: nullable MDoc
+
+ # Convert `self` to a `MDoc`
fun to_mdoc: MDoc
do
var res = mdoc_cache
if res != null then return res
- res = new MDoc
+ res = new MDoc(location)
for c in n_comment do
var text = c.text
if text.length < 2 then
nitlanguage / nit.git / blobdiff