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allow iflags to be constant expressions with typing-strictness==2

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* libguile/tags.h (SCM_MAKE_ITAG8_BITS): New helper, produces a
  scm_t_bits instead of a SCM, because SCM_UNPACK is not a constant
  expression with SCM_DEBUG_TYPING_STRICTNESS==2.
  (SCM_MAKIFLAG_BITS): Remove SCM_MAKIFLAG, and replace with this, which
  returns bits.
  (SCM_BOOL_F_BITS, SCM_ELISP_NIL_BITS, SCM_EOL_BITS, SCM_BOOL_T_BITS):
  (SCM_UNSPECIFIED_BITS, SCM_UNDEFINED_BITS, SCM_EOF_VAL_BITS):
  (SCM_UNBOUND_BITS): New definitions.  Defined SCM_BOOL_F, etc in terms
  of them.
  (SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_0):
  (SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_1):
  (SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_2):
  (SCM_XXX_ANOTHER_LISP_FALSE_DONT_USE): Be bits instead of SCM values.
  (SCM_BITS_DIFFER_IN_EXACTLY_ONE_BIT_POSITION):
  (SCM_BITS_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS): Rename from
  SCM_VALUES_DIFFER_..., and take unpacked bits as the args.

* libguile/boolean.c: Update verify block to use
  SCM_BITS_DIFFER_IN_EXACTLY_TWO_BIT_POSITIONS et al.

* libguile/debug.c (scm_debug_opts):
* libguile/print.c (scm_print_opts):
* libguile/read.c (scm_read_opts): Use iflags bits for initializers.

* libguile/hash.c (scm_hasher): Use _BITS for iflags as case labels.

* libguile/pairs.c: Nil/null compile-time check uses
  SCM_ELISP_NIL_BITS.
This commit is contained in:
Andy Wingo 2011-05-13 10:19:48 +02:00
parent 544a29de14
commit 210c0325d3
7 changed files with 58 additions and 48 deletions
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4
libguile/debug.c
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@ -1,5 +1,5 @@
/* Debugging extensions for Guile
* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010 Free Software Foundation
* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010, 2011 Free Software Foundation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -82,7 +82,7 @@ scm_t_option scm_debug_opts[] = {
for anyone!) or a whoppin' 1280 KB on 64-bit arches.
*/
{ SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." },
{ SCM_OPTION_SCM, "show-file-name", (scm_t_bits)SCM_BOOL_T,
{ SCM_OPTION_SCM, "show-file-name", SCM_BOOL_T_BITS,
"Show file names and line numbers "
"in backtraces when not `#f'. A value of `base' "
"displays only base names, while `#t' displays full names."},