X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/35b8730d018b0bb25f7864d0db20f687ebad11b6..4b7a4c1b1c8c18e9ad2517c117442b9b7d7e671a:/src/muscle_tab.h?ds=sidebyside

diff --git a/src/muscle_tab.h b/src/muscle_tab.h
index 19fba8b9..e06126b3 100644
--- a/src/muscle_tab.h
+++ b/src/muscle_tab.h
@@ -1,5 +1,6 @@
 /* Muscle table manager for Bison,
-   Copyright (C) 2001, 2002, 2003, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002, 2003, 2006, 2007, 2009 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -122,12 +123,25 @@ void muscle_boundary_grow (char const *key, boundary bound);
 void muscle_user_name_list_grow (char const *key, char const *user_name,
                                  location loc);
 
-/* Define the muscle for the %define variable VARIABLE appearing at
-   VARIABLE_LOC in the grammar file with value VALUE.  Warn if VARIABLE is
-   already defined.  Record this as a grammar occurrence of VARIABLE by
-   invoking muscle_user_name_list_grow.  */
+/* Indicates whether a variable's value was specified with -D/--define, with
+   -F/--force-define, or in the grammar file.  */
+typedef enum {
+  MUSCLE_PERCENT_DEFINE_D = 0, MUSCLE_PERCENT_DEFINE_F,
+  MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE
+} muscle_percent_define_how;
+
+/* Define the muscles for %define variable VARIABLE with VALUE specified
+   at VARIABLE_LOC in the manner HOW unless it was specified in the
+   grammar file while the previous definition for VARIABLE was specified
+   with -F/--force-define.  Complain if a previous definition is being
+   overridden and the new definition is specified in the grammar file.
+   (These rules support the documented behavior as long as command-line
+   definitions are processed before grammar file definitions.)  Record
+   this as a user occurrence of VARIABLE by invoking
+   muscle_user_name_list_grow.  */
 void muscle_percent_define_insert (char const *variable, location variable_loc,
-                                   char const *value);
+                                   char const *value,
+                                   muscle_percent_define_how how);
 
 /* Mimic b4_percent_define_get in ../data/bison.m4 exactly.  That is, if the
    %define variable VARIABLE is defined, return its value.  Otherwise, return
@@ -185,9 +199,10 @@ void muscle_percent_define_default (char const *variable, char const *value);
    output.  */
 void muscle_percent_define_check_values (char const * const *values);
 
-/* Grow the muscle for the %code qualifier QUALIFIER appearing at QUALIFIER_LOC
-   in the grammar file with code CODE appearing at CODE_LOC.  Record this as a
-   grammar occurrence of VARIABLE by invoking muscle_user_name_list_grow.  */
+/* Grow the muscle for the %code qualifier QUALIFIER appearing at
+   QUALIFIER_LOC with code CODE appearing at CODE_LOC.  Record this as a
+   user occurrence of QUALIFIER by invoking
+   muscle_user_name_list_grow.  */
 void muscle_percent_code_grow (char const *qualifier, location qualifier_loc,
                                char const *code, location code_loc);