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add foreign value wrapper

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* libguile/foreign.h:
* libguile/foreign.c: New files, implementing simple wrappers around
  foreign values, such as those that one might link in dynamically from
  a library.

* libguile/tags.h (scm_tc7_foreign): Take a tc7 for foreign values.

* libguile.h:
* libguile/init.c: Add foreign.h to headers and init.

* libguile/print.c (iprin1): Add printer for foreign values.

* libguile/gc.c (scm_i_tag_name): Case for foreign values.
* libguile/goops.c (scm_class_of, create_standard_classes): Add a class
  for foreign values.

* libguile/evalext.c (scm_self_evaluating_p): Add case for foreign
  values.

* libguile/Makefile.am: Add foreign.[ch] to the build.
This commit is contained in:
Andy Wingo 2010-01-04 12:11:33 +01:00
parent 208fae8a0e
commit e2c2a6994d
10 changed files with 401 additions and 9 deletions
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7
libguile/goops.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009
/* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010
* Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
@ -157,6 +157,7 @@ SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_
SCM scm_class_scm;
SCM scm_class_int, scm_class_float, scm_class_double;
static SCM class_foreign;
static SCM class_hashtable;
static SCM class_fluid;
static SCM class_dynamic_state;
@ -213,6 +214,8 @@ SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0,
case scm_tc7_vector:
case scm_tc7_wvect:
return scm_class_vector;
case scm_tc7_foreign:
return class_foreign;
case scm_tc7_hashtable:
return class_hashtable;
case scm_tc7_fluid:
@ -2394,6 +2397,8 @@ create_standard_classes (void)
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&scm_class_vector, "<vector>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_foreign, "<foreign>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_hashtable, "<hashtable>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_fluid, "<fluid>",