X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f6b561d9f9cbc6fc95bbb86518372a5cb52f45a6..ea9e670d728ac659e139434de31ea9306ecdd117:/data/bison.m4?ds=sidebyside

diff --git a/data/bison.m4 b/data/bison.m4
index 1907e42e..6f06266d 100644
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -61,6 +61,30 @@ This special exception was added by the Free Software Foundation in
 version 2.2 of Bison.])])
 
 
+## -------- ##
+## Output.  ##
+## -------- ##
+
+# b4_output_begin(FILE)
+# ---------------------
+# Enable output, i.e., send to diversion 0, expand after "#", and
+# generate the tag to output into FILE.  Must be followed by EOL.
+m4_define([b4_output_begin],
+[m4_changecom()
+m4_divert_push(0)dnl
+@output(m4_unquote([$1])@)@dnl
+])
+
+
+# b4_output_end()
+# ---------------
+# Output nothing, restore # as comment character (no expansions after #).
+m4_define([b4_output_end],
+[m4_divert_pop(0)
+m4_changecom([#])
+])
+
+
 ## ---------------- ##
 ## Error handling.  ##
 ## ---------------- ##
@@ -333,7 +357,7 @@ m4_define([b4_symbol_],
 # undefined.  If FIELD = id, prepend the prefix.
 m4_define([b4_symbol],
 [m4_case([$2],
-         [id],    [m4_do([b4_percent_define_get([api.tokens.prefix])],
+         [id],    [m4_do([b4_percent_define_get([api.token.prefix])],
                          [b4_symbol_([$1], [id])])],
          [b4_symbol_($@)])])
 
@@ -697,17 +721,18 @@ m4_define([b4_percent_define_default],
             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
+# b4_percent_define_if_define(NAME, [VARIABLE = NAME])
+# ----------------------------------------------------
+# Define b4_NAME_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])])])
+           [b4_percent_define_flag_if(m4_default([$2], [$1]),
+                                      [$3], [$4])])])
 m4_define([b4_percent_define_if_define],
-[b4_percent_define_default([[$1]], [[false]])
-b4_percent_define_if_define_([$1], $[1], $[2])])
+[b4_percent_define_default([m4_default([$2], [$1])], [[false]])
+b4_percent_define_if_define_([$1], [$2], $[1], $[2])])
 
 
 # b4_percent_define_check_values(VALUES)
@@ -790,20 +815,27 @@ m4_define([b4_percent_code_ifdef],
 
 # Default values for %define.
 # ---------------------------
-# If the api.tokens.prefix, it is empty.
-m4_percent_define_default([[api.tokens.prefix]], [[]])
+# If the api.token.prefix, it is empty.
+m4_percent_define_default([[api.token.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_token_ctor_if([IF-YYLEX-RETURNS-A-TOKEN], [IF-NOT])
 # b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
 # ----------------------------------------------
-b4_percent_define_if_define([lex_symbol])
+b4_percent_define_if_define([token_ctor], [api.token.constructor])
 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_bison_locations_if([IF-TRUE])
+# --------------------------------
+# Expand IF-TRUE if using locations, and using the default location
+# type.
+m4_define([b4_bison_locations_if],
+[b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [], [$1])])])
+
 
 # b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
 # ------------------------------------------------------