1 files changed, 36 insertions, 0 deletions
diff --git a/ext/psych/psych.c b/ext/psych/psych.c
new file mode 100644
index 0000000000..afbd7a3571
--- /dev/null
+++ b/ext/psych/psych.c
@@ -0,0 +1,36 @@
+#include <psych.h>
+
+/* call-seq: Psych.libyaml_version
+ *
+ * Returns the version of libyaml being used
+ */
+static VALUE libyaml_version(VALUE module)
+{
+    int major, minor, patch;
+    VALUE list[3];
+
+    yaml_get_version(&major, &minor, &patch);
+
+    list[0] = INT2NUM(major);
+    list[1] = INT2NUM(minor);
+    list[2] = INT2NUM(patch);
+
+    return rb_ary_new4((long)3, list);
+}
+
+VALUE mPsych;
+
+void Init_psych(void)
+{
+    #ifdef HAVE_RB_EXT_RACTOR_SAFE
+        RB_EXT_RACTOR_SAFE(true);
+    #endif
+    mPsych = rb_define_module("Psych");
+
+    rb_define_singleton_method(mPsych, "libyaml_version", libyaml_version, 0);
+
+    Init_psych_parser();
+    Init_psych_emitter();
+    Init_psych_to_ruby();
+    Init_psych_yaml_tree();
+}