From 5e86bfad5637289608ed35b439bb5247f96e8453 Mon Sep 17 00:00:00 2001
From: rich <rich>
Date: Sun, 26 Oct 2003 11:22:38 +0000
Subject: [PATCH] Added support for references. Fixed support for floats.

---
 perl.ml  | 10 +++++++---
 perl.mli | 19 ++++++++++++++++---
 perl_c.c | 32 +++++++++++++++++++++++++++++++-
 3 files changed, 54 insertions(+), 7 deletions(-)

diff --git a/perl.ml b/perl.ml
index 95ad3e5..5812a61 100644
--- a/perl.ml
+++ b/perl.ml
@@ -1,6 +1,6 @@
 (* Interface to Perl from OCaml.
  * Copyright (C) 2003 Merjis Ltd.
- * $Id: perl.ml,v 1.8 2003-10-18 12:36:09 rich Exp $
+ * $Id: perl.ml,v 1.9 2003-10-26 11:22:38 rich Exp $
  *)
 
 type t
@@ -36,8 +36,8 @@ external set_context : t -> unit
 
 external int_of_sv : sv -> int = "perl4caml_int_of_sv"
 external sv_of_int : int -> sv = "perl4caml_sv_of_int"
-external float_of_sv : sv -> int = "perl4caml_float_of_sv"
-external sv_of_float : int -> sv = "perl4caml_sv_of_float"
+external float_of_sv : sv -> float = "perl4caml_float_of_sv"
+external sv_of_float : float -> sv = "perl4caml_sv_of_float"
 external string_of_sv : sv -> string = "perl4caml_string_of_sv"
 external sv_of_string : string -> sv = "perl4caml_sv_of_string"
 external sv_is_true : sv -> bool = "perl4caml_sv_is_true"
@@ -77,6 +77,10 @@ let string_of_sv_t = function
   | SVt_PVGV  -> "SVt_PVGV"
   | SVt_PVMG  -> "SVt_PVMG"
 
+external scalarref : sv -> sv = "perl4caml_scalarref"
+external arrayref : av -> sv = "perl4caml_arrayref"
+external hashref : hv -> sv = "perl4caml_hashref"
+
 external deref : sv -> sv = "perl4caml_deref"
 external deref_array : sv -> av = "perl4caml_deref_array"
 external deref_hash : sv -> hv = "perl4caml_deref_hash"
diff --git a/perl.mli b/perl.mli
index ef8dea0..831d69b 100644
--- a/perl.mli
+++ b/perl.mli
@@ -2,7 +2,7 @@
   *
   * Copyright (C) 2003 Merjis Ltd.
   *
-  * $Id: perl.mli,v 1.9 2003-10-18 12:36:09 rich Exp $
+  * $Id: perl.mli,v 1.10 2003-10-26 11:22:38 rich Exp $
   *)
 
 type t
@@ -88,9 +88,9 @@ val int_of_sv : sv -> int
   *)
 val sv_of_int : int -> sv
 (** Convert an [int] into a Perl [SV]. *)
-val float_of_sv : sv -> int
+val float_of_sv : sv -> float
 (** Convert a Perl [SV] into a float. *)
-val sv_of_float : int -> sv
+val sv_of_float : float -> sv
 (** Convert a [float] into a Perl [SV]. *)
 val string_of_sv : sv -> string
 (** Convert a Perl [SV] into a string. *)
@@ -136,6 +136,19 @@ val sv_type : sv -> sv_t
 val string_of_sv_t : sv_t -> string
 (** Return a printable string for an [sv_t] ([SV] type). *)
 
+val scalarref : sv -> sv
+(** Given a scalar, this returns a reference to the scalar. Note that
+  * because references are [SV]s, this returns [sv].
+  *)
+val arrayref : av -> sv
+(** Given an array, this returns a reference to the array. Note that
+  * because references are [SV]s, this returns [sv].
+  *)
+val hashref : hv -> sv
+(** Given a hash, this returns a reference to the hash. Note that
+  * because references are [SV]s, this returns [sv].
+  *)
+
 val deref : sv -> sv
 (** The input is a reference to a scalar. This returns the underlying
   * scalar [SV]. If the input is not a reference to a scalar, throws
diff --git a/perl_c.c b/perl_c.c
index 9ad8d68..897e174 100644
--- 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 1.8 2003-10-18 12:36:09 rich Exp $
+ * $Id: perl_c.c,v 1.9 2003-10-26 11:22:38 rich Exp $
  */
 
 #include <stdio.h>
@@ -241,6 +241,36 @@ perl4caml_sv_type (value svv)
 }
 
 CAMLprim value
+perl4caml_scalarref (value svv)
+{
+  CAMLparam1 (svv);
+  CAMLlocal1 (rsvv);
+  SV *sv = Sv_val (svv);
+  rsvv = Val_sv (newRV_inc (sv));
+  CAMLreturn (rsvv);
+}
+
+CAMLprim value
+perl4caml_arrayref (value avv)
+{
+  CAMLparam1 (avv);
+  CAMLlocal1 (rsvv);
+  AV *av = Av_val (avv);
+  rsvv = Val_sv (newRV_inc ((SV *) av));
+  CAMLreturn (rsvv);
+}
+
+CAMLprim value
+perl4caml_hashref (value hvv)
+{
+  CAMLparam1 (hvv);
+  CAMLlocal1 (rsvv);
+  HV *hv = Hv_val (hvv);
+  rsvv = Val_sv (newRV_inc ((SV *) hv));
+  CAMLreturn (rsvv);
+}
+
+CAMLprim value
 perl4caml_deref (value svv)
 {
   CAMLparam1 (svv);
-- 
1.8.3.1