* src/lalr.c (state_lookahead_tokens_count): Correct comment.

[bison.git] / data / bison.m4

diff --git a/data/bison.m4 b/data/bison.m4
index fbf375bda08cc97f3ea51d46b998bc41a0325b24..585fb1d0c2e5ab8453519052b4ef88b684598b68 100644 (file)
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -1,7 +1,8 @@
                                                             -*- Autoconf -*-
 
 # Language-independent M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -74,7 +75,8 @@ version 2.2 of Bison.])])
 m4_define([b4_cat],
 [m4_syscmd([cat <<'_m4eof'
 ]m4_bpatsubst(m4_dquote($1), [_m4eof], [_m4@`eof])[@
-_m4eof])dnl
+_m4eof
+])dnl
 m4_if(m4_sysval, [0], [], [m4_fatal([$0: cannot write to stdout])])])
 
 # b4_error(KIND, FORMAT, [ARG1], [ARG2], ...)
@@ -249,7 +251,6 @@ b4_define_flag_if([error_verbose])  # Whether error are verbose.
 b4_define_flag_if([glr])               # Whether a GLR parser is requested.
 b4_define_flag_if([locations])         # Whether locations are tracked.
 b4_define_flag_if([nondeterministic])  # Whether conflicts should be handled.
-b4_define_flag_if([pure])              # Whether the interface is pure.
 b4_define_flag_if([yacc])              # Whether POSIX Yacc is emulated.
 
 
@@ -316,8 +317,8 @@ b4_define_user_code([stype])
 # but is not used by Bison (as recorded by macros in the namespace
 # BISON-NAMESPACE).
 #
-# USER-LIST must expand to a list specifying all grammar occurrences of all
-# names of type WHAT.   Each item in the list must be a triplet specifying one
+# USER-LIST must expand to a list specifying all user occurrences of all names
+# of type WHAT.   Each item in the list must be a triplet specifying one
 # occurrence: name, start boundary, and end boundary.  Empty string names are
 # fine.  An empty list is fine.
 #
@@ -463,10 +464,9 @@ m4_define([b4_percent_define_default],
 [m4_ifndef([b4_percent_define(]$1[)],
            [m4_define([b4_percent_define(]$1[)], [$2])dnl
             m4_define([b4_percent_define_loc(]$1[)],
-                      [[[[[Bison:b4_percent_define_default]:1.0]], [[[Bison:b4_percent_define_default]:1.0]]]])dnl
-            m4_define([b4_percent_define_syncline(]$1[)],
-                      [[]b4_syncline(1, [["[Bison:b4_percent_define_default]"]])[
-]])])])
+                      [[[[<skeleton default value>:-1.-1]],
+                        [[<skeleton default value>:-1.-1]]]])dnl
+            m4_define([b4_percent_define_syncline(]$1[)], [[]])])])
 
 # b4_percent_define_check_values(VALUES)
 # --------------------------------------
@@ -499,7 +499,11 @@ m4_define([_b4_percent_define_check_values],
          [b4_complain_at(b4_percent_define_get_loc([$1]),
                          [[invalid value for %%define variable `%s': `%s']],
                          [$1],
-                         m4_dquote(m4_indir([b4_percent_define(]$1[)])))])dnl
+                         m4_dquote(m4_indir([b4_percent_define(]$1[)])))
+          m4_foreach([b4_value], m4_dquote(m4_shift($@)),
+                     [b4_complain_at(b4_percent_define_get_loc([$1]),
+                                     [[accepted value: `%s']],
+                                     m4_dquote(b4_value))])])dnl
    m4_popdef([b4_good_value])],
   [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])])
 
@@ -521,7 +525,7 @@ m4_define([b4_percent_code_get],
 m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])dnl
 m4_ifdef(b4_macro_name,
 [b4_comment([m4_if([$#], [0], [[Unqualified %code]],
-                   [[%code "]$1["]])[ blocks.]])
+                   [["%code ]$1["]])[ blocks.]])
 b4_user_code([m4_indir(b4_macro_name)])
 ])dnl
 m4_popdef([b4_macro_name])])
@@ -549,7 +553,7 @@ m4_define([b4_check_user_names_wrap],
                                [b4_percent_]$1[_user_]$2[s],
                                [[b4_percent_]$1[_bison_]$2[s]])])])
 
-m4_wrap([
+m4_wrap_lifo([
 b4_check_user_names_wrap([[define]], [[variable]])
 b4_check_user_names_wrap([[code]], [[qualifier]])
 ])