# Generate a alloc-instance + init-attributes
fun init_instance(mtype: MClassType): RuntimeVariable is abstract
+ # Allocate and init attributes of an instance of a standard or extern class
+ #
+ # Does not support universals and the pseudo-internal `NativeArray` class.
+ fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
+ do
+ var recv
+ var ctype = mtype.ctype
+ assert mtype.mclass.name != "NativeArray"
+ if ctype == "val*" then
+ recv = init_instance(mtype)
+ else if ctype == "char*" then
+ recv = new_expr("NULL/*special!*/", mtype)
+ else
+ recv = new_expr("({ctype})0/*special!*/", mtype)
+ end
+ return recv
+ end
+
# Set a GC finalizer on `recv`, only if `recv` isa Finalizable
fun set_finalizer(recv: RuntimeVariable)
do
do
var mtype = self.recvtype
assert mtype != null
- var recv
- var ctype = mtype.ctype
+
if mtype.mclass.name == "NativeArray" then
assert self.n_args.n_exprs.length == 1
var l = v.expr(self.n_args.n_exprs.first, null)
assert mtype isa MGenericType
var elttype = mtype.arguments.first
return v.native_array_instance(elttype, l)
- else if ctype == "val*" then
- recv = v.init_instance(mtype)
- else if ctype == "char*" then
- recv = v.new_expr("NULL/*special!*/", mtype)
- else
- recv = v.new_expr("({ctype})0/*special!*/", mtype)
end
+ var recv = v.init_instance_or_extern(mtype)
+
var callsite = self.callsite.as(not null)
var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
var res2 = v.compile_callsite(callsite, args)
--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Test callback to an extern constructor from extern code
+
+import standard::string
+
+extern class IntPtr `{ int* `}
+ new (v: Int) `{
+ int *r = malloc(sizeof(int));
+ *r = v;
+ return r;
+ `}
+
+ redef fun to_s import NativeString, NativeString.to_s `{
+ int len = snprintf(NULL, 0, "%d", *recv) + 1;
+ char *c = new_NativeString(len);
+ sprintf(c, "%d", *recv);
+ return NativeString_to_s(c);
+ `}
+end
+
+fun foo: IntPtr import IntPtr `{
+ int *c = new_IntPtr(5678);
+ return c;
+`}
+
+var a = new IntPtr(1234)
+a.to_s.output
+"\n".output
+
+var b = foo
+b.to_s.output
+"\n".output