From: Pino Toscano <ptoscano@redhat.com>
Date: Thu, 30 Aug 2018 10:13:35 +0000 (+0200)
Subject: Add Val_opt_const & Val_const_ptr_t
X-Git-Url: http://git.annexia.org/?p=ocaml-libvirt.git;a=commitdiff_plain;h=afa590cde00a228a062461847a116d70145ef77f

Add Val_opt_const & Val_const_ptr_t

Counterparts of Val_opt & Val_ptr_t, but with constness for the pointer.
---

diff --git a/libvirt/libvirt_c_epilogue.c b/libvirt/libvirt_c_epilogue.c
index fa592c9..c7284b1 100644
--- a/libvirt/libvirt_c_epilogue.c
+++ b/libvirt/libvirt_c_epilogue.c
@@ -45,6 +45,22 @@ Val_opt (void *ptr, Val_ptr_t Val_ptr)
   CAMLreturn (optv);
 }
 
+static value
+Val_opt_const (const void *ptr, Val_const_ptr_t Val_ptr)
+{
+  CAMLparam0 ();
+  CAMLlocal2 (optv, ptrv);
+
+  if (ptr) {			/* Some ptr */
+    optv = caml_alloc (1, 0);
+    ptrv = Val_ptr (ptr);
+    Store_field (optv, 0, ptrv);
+  } else			/* None */
+    optv = Val_int (0);
+
+  CAMLreturn (optv);
+}
+
 #if 0
 static value
 option_default (value option, value deflt)
diff --git a/libvirt/libvirt_c_prologue.c b/libvirt/libvirt_c_prologue.c
index 710c0d6..c82bd5f 100644
--- a/libvirt/libvirt_c_prologue.c
+++ b/libvirt/libvirt_c_prologue.c
@@ -23,6 +23,8 @@
 static char *Optstring_val (value strv);
 typedef value (*Val_ptr_t) (void *);
 static value Val_opt (void *ptr, Val_ptr_t Val_ptr);
+typedef value (*Val_const_ptr_t) (const void *);
+static value Val_opt_const (const void *ptr, Val_const_ptr_t Val_ptr);
 /*static value option_default (value option, value deflt);*/
 static void _raise_virterror (const char *fn) Noreturn;
 static value Val_virterror (virErrorPtr err);