2 files changed, 64 insertions, 0 deletions
diff --git a/ext/-test-/st/numhash/extconf.rb b/ext/-test-/st/numhash/extconf.rb
new file mode 100644
index 0000000000..867fd75d2a
--- /dev/null
+++ b/ext/-test-/st/numhash/extconf.rb
@@ -0,0 +1 @@
+create_makefile("-test-/st/numhash")
diff --git a/ext/-test-/st/numhash/numhash.c b/ext/-test-/st/numhash/numhash.c
new file mode 100644
index 0000000000..3659100613
--- /dev/null
+++ b/ext/-test-/st/numhash/numhash.c
@@ -0,0 +1,63 @@
+#include <ruby.h>
+#include <ruby/st.h>
+
+static VALUE
+numhash_alloc(VALUE klass)
+{
+    return Data_Wrap_Struct(klass, 0, 0, 0);
+}
+
+static VALUE
+numhash_init(VALUE self)
+{
+    st_table *tbl = (st_table *)DATA_PTR(self);
+    if (tbl) st_free_table(tbl);
+    DATA_PTR(self) = st_init_numtable();
+    return self;
+}
+
+static VALUE
+numhash_aref(VALUE self, VALUE key)
+{
+    st_data_t data;
+    if (!SPECIAL_CONST_P(key)) rb_raise(rb_eArgError, "not a special const");
+    if (st_lookup((st_table *)DATA_PTR(self), (st_data_t)key, &data))
+	return (VALUE)data;
+    return Qnil;
+}
+
+static VALUE
+numhash_aset(VALUE self, VALUE key, VALUE data)
+{
+    if (!SPECIAL_CONST_P(key)) rb_raise(rb_eArgError, "not a special const");
+    if (!SPECIAL_CONST_P(data)) rb_raise(rb_eArgError, "not a special const");
+    st_insert((st_table *)DATA_PTR(self), (st_data_t)key, (st_data_t)data);
+    return self;
+}
+
+static int
+numhash_i(st_data_t key, st_data_t value, st_data_t arg, int error)
+{
+    VALUE ret;
+    if (key == 0 && value == 0 && error == 1) rb_raise(rb_eRuntimeError, "numhash modified");
+    ret = rb_yield_values(3, (VALUE)key, (VALUE)value, (VALUE)arg);
+    if (ret == Qtrue) return ST_CHECK;
+    return ST_CONTINUE;
+}
+
+static VALUE
+numhash_each(VALUE self)
+{
+    return st_foreach((st_table *)DATA_PTR(self), numhash_i, self) ? Qtrue : Qfalse;
+}
+
+void
+Init_numhash(void)
+{
+    VALUE st = rb_define_class_under(rb_define_module("Bug"), "StNumHash", rb_cData);
+    rb_define_alloc_func(st, numhash_alloc);
+    rb_define_method(st, "initialize", numhash_init, 0);
+    rb_define_method(st, "[]", numhash_aref, 1);
+    rb_define_method(st, "[]=", numhash_aset, 2);
+    rb_define_method(st, "each", numhash_each, 0);
+}