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add scm_c_values helper

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* libguile/values.h:
* libguile/values.c (scm_c_values): New public helper.
This commit is contained in:
Andy Wingo 2012-04-30 19:40:52 +02:00
parent 4bd53c1ba3
commit c15defef7f
2 changed files with 18 additions and 5 deletions
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20
libguile/values.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2001, 2006, 2008, 2009, 2011 Free Software Foundation, Inc. /* Copyright (C) 2000, 2001, 2006, 2008, 2009, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -108,14 +108,26 @@ SCM_DEFINE (scm_values, "values", 0, 0, 1,
if (n == 1) if (n == 1)
result = SCM_CAR (args); result = SCM_CAR (args);
else else
{ result = scm_c_make_struct (scm_values_vtable, 0, 1, SCM_UNPACK (args));
result = scm_c_make_struct (scm_values_vtable, 0, 1, SCM_UNPACK (args));
}
return result; return result;
} }
#undef FUNC_NAME #undef FUNC_NAME
SCM
scm_c_values (SCM *base, size_t nvalues)
{
SCM ret, *walk;
if (nvalues == 1)
return *base;
for (ret = SCM_EOL, walk = base + nvalues - 1; walk >= base; walk--)
ret = scm_cons (*walk, ret);
return scm_values (ret);
}
void void
scm_init_values (void) scm_init_values (void)
{ {

3
libguile/values.h
View file

@ -3,7 +3,7 @@
#ifndef SCM_VALUES_H #ifndef SCM_VALUES_H
#define SCM_VALUES_H #define SCM_VALUES_H
/* Copyright (C) 2000,2001, 2006, 2008 Free Software Foundation, Inc. /* Copyright (C) 2000,2001, 2006, 2008, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -33,6 +33,7 @@ SCM_API SCM scm_values_vtable;
SCM_INTERNAL void scm_i_extract_values_2 (SCM obj, SCM *p1, SCM *p2); SCM_INTERNAL void scm_i_extract_values_2 (SCM obj, SCM *p1, SCM *p2);
SCM_API SCM scm_values (SCM args); SCM_API SCM scm_values (SCM args);
SCM_API SCM scm_c_values (SCM *base, size_t nvalues);
SCM_API SCM scm_c_value_ref (SCM values, size_t idx); SCM_API SCM scm_c_value_ref (SCM values, size_t idx);
SCM_INTERNAL void scm_init_values (void); SCM_INTERNAL void scm_init_values (void);