Added META (package information) for perl4caml.

[perl4caml.git] / perl_c.c

diff --git a/perl_c.c b/perl_c.c
index 9056591..9ad8d68 100644 (file)
--- a/perl_c.c
+++ b/perl_c.c
@@ -1,6 +1,6 @@
 /* Interface to Perl from OCaml.
  * Copyright (C) 2003 Merjis Ltd.
- * $Id: perl_c.c,v 1.7 2003-10-16 11:03:51 rich Exp $
+ * $Id: perl_c.c,v 1.8 2003-10-18 12:36:09 rich Exp $
  */
 
 #include <stdio.h>
@@ -42,6 +42,8 @@ static value unoption (value option, value deflt);
 #define Sv_val(svv) (Voidptr_val (SV, (svv)))
 #define Val_av(av) (Val_voidptr ((av)))
 #define Av_val(avv) (Voidptr_val (AV, (avv)))
+#define Val_hv(hv) (Val_voidptr ((hv)))
+#define Hv_val(hvv) (Voidptr_val (HV, (hvv)))
 
 CAMLprim value
 perl4caml_init (value unit)
@@ -193,14 +195,14 @@ perl4caml_sv_is_undef (value svv)
 {
   CAMLparam1 (svv);
   SV *sv = Sv_val (svv);
-  CAMLreturn (sv == &PL_sv_undef ? Val_true : Val_false);
+  CAMLreturn (SvLEN (sv) == 0 ? Val_true : Val_false);
 }
 
 CAMLprim value
 perl4caml_sv_undef (value unit)
 {
   CAMLparam1 (unit);
-  CAMLreturn (Val_sv (&PL_sv_undef));
+  CAMLreturn (Val_sv (newSV (0)));
 }
 
 CAMLprim value
@@ -281,6 +283,25 @@ perl4caml_deref_array (value svv)
 }
 
 CAMLprim value
+perl4caml_deref_hash (value svv)
+{
+  CAMLparam1 (svv);
+  CAMLlocal1 (rhvv);
+  SV *sv = Sv_val (svv);
+
+  if (SvTYPE (sv) != SVt_RV)
+    invalid_argument ("deref_array: SV is not a reference");
+  switch (SvTYPE (SvRV (sv))) {
+  case SVt_PVHV:
+    break;
+  default:
+    invalid_argument ("deref_array: SV is not a reference to a hash");
+  }
+  rhvv = Val_hv ((HV *) SvRV (sv));
+  CAMLreturn (rhvv);
+}
+
+CAMLprim value
 perl4caml_av_empty (value unit)
 {
   CAMLparam1 (unit);
@@ -419,6 +440,72 @@ perl4caml_av_extend (value avv, value i)
 }
 
 CAMLprim value
+perl4caml_hv_empty (value unit)
+{
+  CAMLparam1 (unit);
+  HV *hv = newHV ();
+  CAMLreturn (Val_hv (hv));
+}
+
+CAMLprim value
+perl4caml_hv_set (value hvv, value key, value svv)
+{
+  CAMLparam3 (hvv, key, svv);
+  HV *hv = Hv_val (hvv);
+  SV *sv = Sv_val (svv);
+  SvREFCNT_inc (sv);
+  if (hv_store (hv, String_val (key), string_length (key), sv, 0) == 0)
+    SvREFCNT_dec (sv);
+  CAMLreturn (Val_unit);
+}
+
+CAMLprim value
+perl4caml_hv_get (value hvv, value key)
+{
+  CAMLparam2 (hvv, key);
+  HV *hv = Hv_val (hvv);
+  SV **svp = hv_fetch (hv, String_val (key), string_length (key), 0);
+  if (svp == 0) raise_not_found ();
+  CAMLreturn (Val_sv (*svp));
+}
+
+CAMLprim value
+perl4caml_hv_exists (value hvv, value key)
+{
+  CAMLparam2 (hvv, key);
+  HV *hv = Hv_val (hvv);
+  bool r = hv_exists (hv, String_val (key), string_length (key));
+  CAMLreturn (r ? Val_true : Val_false);
+}
+
+CAMLprim value
+perl4caml_hv_delete (value hvv, value key)
+{
+  CAMLparam2 (hvv, key);
+  HV *hv = Hv_val (hvv);
+  hv_delete (hv, String_val (key), string_length (key), G_DISCARD);
+  CAMLreturn (Val_unit);
+}
+
+CAMLprim value
+perl4caml_hv_clear (value hvv)
+{
+  CAMLparam1 (hvv);
+  HV *hv = Hv_val (hvv);
+  hv_clear (hv);
+  CAMLreturn (Val_unit);
+}
+
+CAMLprim value
+perl4caml_hv_undef (value hvv)
+{
+  CAMLparam1 (hvv);
+  HV *hv = Hv_val (hvv);
+  hv_undef (hv);
+  CAMLreturn (Val_unit);
+}
+
+CAMLprim value
 perl4caml_get_sv (value optcreate, value name)
 {
   CAMLparam2 (optcreate, name);
@@ -446,6 +533,20 @@ perl4caml_get_av (value optcreate, value name)
   CAMLreturn (Val_av (av));
 }
 
+CAMLprim value
+perl4caml_get_hv (value optcreate, value name)
+{
+  CAMLparam2 (optcreate, name);
+  CAMLlocal1 (create);
+  HV *hv;
+
+  create = unoption (optcreate, Val_false);
+  hv = get_hv (String_val (name), create == Val_true ? TRUE : FALSE);
+  if (hv == NULL) raise_not_found ();
+
+  CAMLreturn (Val_hv (hv));
+}
+
 static inline void
 check_perl_failure ()
 {