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-rw-r--r--libguile/srcprop.c63
1 files changed, 41 insertions, 22 deletions
diff --git a/libguile/srcprop.c b/libguile/srcprop.c
index f63f1bc61..cc71fd182 100644
--- a/libguile/srcprop.c
+++ b/libguile/srcprop.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002, 2006, 2008, 2009, 2010, 2011 Free Software Foundation
+/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2006,
+ * 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@@ -91,6 +92,14 @@ static SCM scm_srcprops_to_alist (SCM obj);
scm_t_bits scm_tc16_srcprops;
+
+static int
+supports_source_props (SCM obj)
+{
+ return SCM_NIMP (obj) && !scm_is_symbol (obj) && !scm_is_keyword (obj);
+}
+
+
static int
srcprops_print (SCM obj, SCM port, scm_print_state *pstate)
{
@@ -157,21 +166,33 @@ scm_srcprops_to_alist (SCM obj)
return alist;
}
+SCM_DEFINE (scm_supports_source_properties_p, "supports-source-properties?", 1, 0, 0,
+ (SCM obj),
+ "Return #t if @var{obj} supports adding source properties,\n"
+ "otherwise return #f.")
+#define FUNC_NAME s_scm_supports_source_properties_p
+{
+ return scm_from_bool (supports_source_props (obj));
+}
+#undef FUNC_NAME
+
SCM_DEFINE (scm_source_properties, "source-properties", 1, 0, 0,
(SCM obj),
"Return the source property association list of @var{obj}.")
#define FUNC_NAME s_scm_source_properties
{
- SCM p;
- SCM_VALIDATE_NIM (1, obj);
-
- p = scm_weak_table_refq (scm_source_whash, obj, SCM_EOL);
-
- if (SRCPROPSP (p))
- return scm_srcprops_to_alist (p);
+ if (SCM_IMP (obj))
+ return SCM_EOL;
else
- /* list from set-source-properties!, or SCM_EOL for not found */
- return p;
+ {
+ SCM p = scm_weak_table_refq (scm_source_whash, obj, SCM_EOL);
+
+ if (SRCPROPSP (p))
+ return scm_srcprops_to_alist (p);
+ else
+ /* list from set-source-properties!, or SCM_EOL for not found */
+ return p;
+ }
}
#undef FUNC_NAME
@@ -195,13 +216,10 @@ int
scm_i_has_source_properties (SCM obj)
#define FUNC_NAME "%set-source-properties"
{
- int ret;
-
- SCM_VALIDATE_NIM (1, obj);
-
- ret = scm_is_true (scm_weak_table_refq (scm_source_whash, obj, SCM_BOOL_F));
-
- return ret;
+ if (SCM_IMP (obj))
+ return 0;
+ else
+ return scm_is_true (scm_weak_table_refq (scm_source_whash, obj, SCM_BOOL_F));
}
#undef FUNC_NAME
@@ -228,18 +246,20 @@ SCM_DEFINE (scm_source_property, "source-property", 2, 0, 0,
#define FUNC_NAME s_scm_source_property
{
SCM p;
- SCM_VALIDATE_NIM (1, obj);
+
+ if (SCM_IMP (obj))
+ return SCM_BOOL_F;
p = scm_weak_table_refq (scm_source_whash, obj, SCM_EOL);
if (!SRCPROPSP (p))
goto alist;
if (scm_is_eq (scm_sym_line, key))
- p = scm_from_int (SRCPROPLINE (p));
+ return scm_from_int (SRCPROPLINE (p));
else if (scm_is_eq (scm_sym_column, key))
- p = scm_from_int (SRCPROPCOL (p));
+ return scm_from_int (SRCPROPCOL (p));
else if (scm_is_eq (scm_sym_copy, key))
- p = SRCPROPCOPY (p);
+ return SRCPROPCOPY (p);
else
{
p = SRCPROPALIST (p);
@@ -247,7 +267,6 @@ SCM_DEFINE (scm_source_property, "source-property", 2, 0, 0,
p = scm_assoc (key, p);
return (scm_is_pair (p) ? SCM_CDR (p) : SCM_BOOL_F);
}
- return SCM_UNBNDP (p) ? SCM_BOOL_F : p;
}
#undef FUNC_NAME