%define: accept unquoted values.

[bison.git] / data / bison.m4

diff --git a/data/bison.m4 b/data/bison.m4
index 670200337e8173259b332c05bcbc3081a67720f2..09287214f69f3eb0756461eb582c51ca3ee86e33 100644 (file)
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -255,9 +255,9 @@ m4_define([b4_integral_parser_tables_map],
 STATE-NUM.]])
 
 $1([defact], [b4_defact],
 STATE-NUM.]])
 
 $1([defact], [b4_defact],

-   [[YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-does not specify something else to do.  Zero means the default is an
-error.]])
+   [[YYDEFACT[S] -- default reduction number in state S.  Performed when
+YYTABLE does not specify something else to do.  Zero means the default
+is an error.]])

 
 $1([pgoto], [b4_pgoto], [[YYPGOTO[NTERM-NUM].]])
 
 
 $1([pgoto], [b4_pgoto], [[YYPGOTO[NTERM-NUM].]])
 


@@ -266,8 +266,7 @@ $1([defgoto], [b4_defgoto], [[YYDEFGOTO[NTERM-NUM].]])
 $1([table], [b4_table],
    [[YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
 positive, shift that token.  If negative, reduce the rule which
 $1([table], [b4_table],
    [[YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
 positive, shift that token.  If negative, reduce the rule which

-number is the opposite.  If zero, do what YYDEFACT says.
-If YYTABLE_NINF, syntax error.]])
+number is the opposite.  If YYTABLE_NINF, syntax error.]])

 
 $1([check], [b4_check])
 
 
 $1([check], [b4_check])
 


@@ -332,9 +331,7 @@ m4_define([b4_$3_if],
 # -----------------------------
 # Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise.
 b4_define_flag_if([defines])           # Whether headers are requested.
 # -----------------------------
 # Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise.
 b4_define_flag_if([defines])           # Whether headers are requested.

-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([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([yacc])              # Whether POSIX Yacc is emulated.
 
 b4_define_flag_if([nondeterministic])  # Whether conflicts should be handled.
 b4_define_flag_if([yacc])              # Whether POSIX Yacc is emulated.
 


@@ -357,7 +354,7 @@ m4_define([b4_symbol_],
 # undefined.  If FIELD = id, prepend the prefix.
 m4_define([b4_symbol],
 [m4_case([$2],
 # undefined.  If FIELD = id, prepend the prefix.
 m4_define([b4_symbol],
 [m4_case([$2],

-         [id],    [m4_do([b4_percent_define_get([token.prefix])],
+         [id],    [m4_do([b4_percent_define_get([api.tokens.prefix])],

                          [b4_symbol_([$1], [id])])],
          [b4_symbol_($@)])])
 
                          [b4_symbol_([$1], [id])])],
          [b4_symbol_($@)])])
 


@@ -508,8 +505,8 @@ b4_define_user_code([stype])
 # but is not used by Bison (as recorded by macros in the namespace
 # BISON-NAMESPACE).
 #
 # 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.
 #
 # occurrence: name, start boundary, and end boundary.  Empty string names are
 # fine.  An empty list is fine.
 #


@@ -553,6 +550,20 @@ m4_popdef([b4_start])dnl
 m4_popdef([b4_end])dnl
 ])])
 
 m4_popdef([b4_end])dnl
 ])])
 

+
+
+## --------------------- ##
+## b4_percent_define_*.  ##
+## --------------------- ##
+
+
+# b4_percent_define_use(VARIABLE)
+# -------------------------------
+# Declare that VARIABLE was used.
+m4_define([b4_percent_define_use],
+[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
+])
+

 # b4_percent_define_get(VARIABLE)
 # -------------------------------
 # Mimic muscle_percent_define_get in ../src/muscle_tab.h exactly.  That is, if
 # b4_percent_define_get(VARIABLE)
 # -------------------------------
 # Mimic muscle_percent_define_get in ../src/muscle_tab.h exactly.  That is, if


@@ -564,7 +575,7 @@ m4_popdef([b4_end])dnl
 #
 #   b4_percent_define_get([[foo]])
 m4_define([b4_percent_define_get],
 #
 #   b4_percent_define_get([[foo]])
 m4_define([b4_percent_define_get],

-[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
+[b4_percent_define_use([$1])dnl

 m4_ifdef([b4_percent_define(]$1[)], [m4_indir([b4_percent_define(]$1[)])])])
 
 # b4_percent_define_get_loc(VARIABLE)
 m4_ifdef([b4_percent_define(]$1[)], [m4_indir([b4_percent_define(]$1[)])])])
 
 # b4_percent_define_get_loc(VARIABLE)


@@ -615,34 +626,15 @@ m4_define([b4_percent_define_get_syncline],
 #   b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]])
 m4_define([b4_percent_define_ifdef],
 [m4_ifdef([b4_percent_define(]$1[)],
 #   b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]])
 m4_define([b4_percent_define_ifdef],
 [m4_ifdef([b4_percent_define(]$1[)],

-         [m4_define([b4_percent_define_bison_variables(]$1[)])$2],
+         [b4_percent_define_use([$1])$2],

          [$3])])
 
 
          [$3])])
 
 

-# b4_percent_define_if_define(VARIABLE)
-# -------------------------------------
-# Define b4_VARIABLE_if that executes its $1 or $2 depending whether VARIABLE
-# was %defined.
-m4_define([b4_percent_define_if_define_],
-[m4_define([b4_$1_if], [b4_percent_define_ifdef([$1], [$2], [$3])])])
-m4_define([b4_percent_define_if_define],
-[b4_percent_define_if_define_([$1], $[1], $[2])])
-

 ## --------- ##
 ## Options.  ##
 ## --------- ##
 
 
 ## --------- ##
 ## Options.  ##
 ## --------- ##
 
 

-# b4_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT])
-# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT])
-# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
-# ----------------------------------------------
-b4_percent_define_if_define([assert])
-b4_percent_define_if_define([lex_symbol])
-b4_percent_define_if_define([variant])
-
-
-

 # b4_percent_define_flag_if(VARIABLE, IF-TRUE, [IF-FALSE])
 # --------------------------------------------------------
 # Mimic muscle_percent_define_flag_if in ../src/muscle_tab.h exactly.  That is,
 # b4_percent_define_flag_if(VARIABLE, IF-TRUE, [IF-FALSE])
 # --------------------------------------------------------
 # Mimic muscle_percent_define_flag_if in ../src/muscle_tab.h exactly.  That is,


@@ -666,6 +658,7 @@ m4_define([b4_percent_define_flag_if],
                            [[b4_percent_define_flag_if($1)]])])],
   [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_flag_if]], [$1])])])
 
                            [[b4_percent_define_flag_if($1)]])])],
   [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_flag_if]], [$1])])])
 

+

 # b4_percent_define_default(VARIABLE, DEFAULT)
 # --------------------------------------------
 # Mimic muscle_percent_define_default in ../src/muscle_tab.h exactly.  That is,
 # b4_percent_define_default(VARIABLE, DEFAULT)
 # --------------------------------------------
 # Mimic muscle_percent_define_default in ../src/muscle_tab.h exactly.  That is,


@@ -680,10 +673,23 @@ 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[)],
 [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_if_define(VARIABLE)
+# -------------------------------------
+# Define b4_VARIABLE_if that executes its $1 or $2 depending whether
+# VARIABLE was %defined.  The characters `.' and `-' in VARIABLE are mapped
+# to `_'.
+m4_define([b4_percent_define_if_define_],
+[m4_define(m4_bpatsubst([b4_$1_if], [[-.]], [_]),
+           [b4_percent_define_flag_if([$1], [$2], [$3])])])
+m4_define([b4_percent_define_if_define],
+[b4_percent_define_default([[$1]], [[false]])
+b4_percent_define_if_define_([$1], $[1], $[2])])
+

 
 # b4_percent_define_check_values(VALUES)
 # --------------------------------------
 
 # b4_percent_define_check_values(VALUES)
 # --------------------------------------


@@ -716,7 +722,11 @@ m4_define([_b4_percent_define_check_values],
          [b4_complain_at(b4_percent_define_get_loc([$1]),
                          [[invalid value for %%define variable `%s': `%s']],
                          [$1],
          [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])])])
 
    m4_popdef([b4_good_value])],
   [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])])
 


@@ -755,12 +765,40 @@ m4_define([b4_percent_code_ifdef],
          [$3])])
 
 
          [$3])])
 
 

+## ------------------ ##
+## Common variables.  ##
+## ------------------ ##
+

 # Default values for %define.
 # ---------------------------
 # Default values for %define.
 # ---------------------------

-# If the %token.prefix, it is empty.
-m4_percent_define_default([[token.prefix]], [[]])
+# If the api.tokens.prefix, it is empty.
+m4_percent_define_default([[api.tokens.prefix]], [[]])
+
+# b4_parse_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT])
+# b4_parse_trace_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT])
+# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT])
+# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
+# ----------------------------------------------
+b4_percent_define_if_define([lex_symbol])
+b4_percent_define_if_define([locations])     # Whether locations are tracked.
+b4_percent_define_if_define([parse.assert])
+b4_percent_define_if_define([parse.trace])
+b4_percent_define_if_define([variant])

 
 
 
 

+# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
+# ------------------------------------------------------
+# Map %define parse.error "(simple|verbose)" to b4_error_verbose_if and
+# b4_error_verbose_flag.
+b4_percent_define_default([[parse.error]], [[simple]])
+b4_percent_define_check_values([[[[parse.error]],
+                                 [[simple]], [[verbose]]]])
+m4_define([b4_error_verbose_flag],
+          m4_case(b4_percent_define_get([[parse.error]]),
+                  [simple],  [[0]],
+                  [verbose], [[1]]))
+b4_define_flag_if([error_verbose])
+

 
 ## ----------------------------------------------------------- ##
 ## After processing the skeletons, check that all the user's   ##
 
 ## ----------------------------------------------------------- ##
 ## After processing the skeletons, check that all the user's   ##