Rename %before-definitions to %start-header and %after-definitions to

%end-header.  Don't use these declarations to separate pre-prologue
blocks from post-prologue blocks.  Add new order-independent
declarations %before-header and %after-header as alternatives to the
traditional Yacc pre-prologue and post-prologue blocks.  Discussed at
<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00110.html>.
* NEWS (2.3+): Update for these changes.
* data/glr.c (b4_before_definitions): Update to...
(b4_start_header): ... this.
(b4_after_definitions): Update to...
(b4_end_header): ... this.
* data/glr.cc: Likewise.
* data/lalr1.cc: Likewise.
* data/yacc.c: Likewise.
* doc/bison.texinfo (The prologue): Update names, and replace remaining
prologue blocks with %*-header declarations.
(Calc++ Parser): Likewise.
(Bison Declaration Summary): Update names.
(Bison Symbols): Update description.
* src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to...
(PERCENT_END_HEADER): ... this.
(PERCENT_BEFORE_DEFINITIONS): Update to...
(PERCENT_START_HEADER): ... this.
(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
(declaration): Update token names and m4 macro names.
When parsing %end-header and %start-header, invoke translate_code
before muscle_code_grow, and no longer set global booleans to remember
whether these declarations have been seen.
Parse new %after-header and %before-header.
* src/reader.c (before_definitions, after_definitions): Remove.
(prologue_augment): Accept a new bool argument to specify whether to
augment the pre-prologue or post-prologue.
* src/reader.h (before_definitions, after_definitions): Remove these
extern's.
(prologue_augment): Add new bool argument.
* src/scan-gram.l (PERCENT_AFTER_DEFINITIONS): Update to...
(PERCENT_END_HEADER): ... this.
(PERCENT_BEFORE_DEFINITIONS): Update to...
(PERCENT_START_HEADER): ... this.
(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
* tests/actions.at (Printers and Destructors): Update names.

src/parse-gram.h

@@ -54,45 +54,47 @@
      PERCENT_PREC = 268,
      PERCENT_DPREC = 269,
      PERCENT_MERGE = 270,
-     PERCENT_AFTER_DEFINITIONS = 271,
-     PERCENT_BEFORE_DEFINITIONS = 272,
+     PERCENT_AFTER_HEADER = 271,
+     PERCENT_BEFORE_HEADER = 272,
      PERCENT_DEBUG = 273,
      PERCENT_DEFAULT_PREC = 274,
      PERCENT_DEFINE = 275,
      PERCENT_DEFINES = 276,
-     PERCENT_ERROR_VERBOSE = 277,
-     PERCENT_EXPECT = 278,
-     PERCENT_EXPECT_RR = 279,
-     PERCENT_FILE_PREFIX = 280,
-     PERCENT_GLR_PARSER = 281,
-     PERCENT_INITIAL_ACTION = 282,
-     PERCENT_LEX_PARAM = 283,
-     PERCENT_LOCATIONS = 284,
-     PERCENT_NAME_PREFIX = 285,
-     PERCENT_NO_DEFAULT_PREC = 286,
-     PERCENT_NO_LINES = 287,
-     PERCENT_NONDETERMINISTIC_PARSER = 288,
-     PERCENT_OUTPUT = 289,
-     PERCENT_PARSE_PARAM = 290,
-     PERCENT_PURE_PARSER = 291,
-     PERCENT_REQUIRE = 292,
-     PERCENT_SKELETON = 293,
-     PERCENT_START = 294,
-     PERCENT_TOKEN_TABLE = 295,
-     PERCENT_VERBOSE = 296,
-     PERCENT_YACC = 297,
-     BRACED_CODE = 298,
-     CHAR = 299,
-     EPILOGUE = 300,
-     EQUAL = 301,
-     ID = 302,
-     ID_COLON = 303,
-     PERCENT_PERCENT = 304,
-     PIPE = 305,
-     PROLOGUE = 306,
-     SEMICOLON = 307,
-     TYPE = 308,
-     PERCENT_UNION = 309
+     PERCENT_END_HEADER = 277,
+     PERCENT_ERROR_VERBOSE = 278,
+     PERCENT_EXPECT = 279,
+     PERCENT_EXPECT_RR = 280,
+     PERCENT_FILE_PREFIX = 281,
+     PERCENT_GLR_PARSER = 282,
+     PERCENT_INITIAL_ACTION = 283,
+     PERCENT_LEX_PARAM = 284,
+     PERCENT_LOCATIONS = 285,
+     PERCENT_NAME_PREFIX = 286,
+     PERCENT_NO_DEFAULT_PREC = 287,
+     PERCENT_NO_LINES = 288,
+     PERCENT_NONDETERMINISTIC_PARSER = 289,
+     PERCENT_OUTPUT = 290,
+     PERCENT_PARSE_PARAM = 291,
+     PERCENT_PURE_PARSER = 292,
+     PERCENT_REQUIRE = 293,
+     PERCENT_SKELETON = 294,
+     PERCENT_START = 295,
+     PERCENT_START_HEADER = 296,
+     PERCENT_TOKEN_TABLE = 297,
+     PERCENT_VERBOSE = 298,
+     PERCENT_YACC = 299,
+     BRACED_CODE = 300,
+     CHAR = 301,
+     EPILOGUE = 302,
+     EQUAL = 303,
+     ID = 304,
+     ID_COLON = 305,
+     PERCENT_PERCENT = 306,
+     PIPE = 307,
+     PROLOGUE = 308,
+     SEMICOLON = 309,
+     TYPE = 310,
+     PERCENT_UNION = 311
    };
 #endif
 /* Tokens.  */
@@ -110,45 +112,47 @@
 #define PERCENT_PREC 268
 #define PERCENT_DPREC 269
 #define PERCENT_MERGE 270
-#define PERCENT_AFTER_DEFINITIONS 271
-#define PERCENT_BEFORE_DEFINITIONS 272
+#define PERCENT_AFTER_HEADER 271
+#define PERCENT_BEFORE_HEADER 272
 #define PERCENT_DEBUG 273
 #define PERCENT_DEFAULT_PREC 274
 #define PERCENT_DEFINE 275
 #define PERCENT_DEFINES 276
-#define PERCENT_ERROR_VERBOSE 277
-#define PERCENT_EXPECT 278
-#define PERCENT_EXPECT_RR 279
-#define PERCENT_FILE_PREFIX 280
-#define PERCENT_GLR_PARSER 281
-#define PERCENT_INITIAL_ACTION 282
-#define PERCENT_LEX_PARAM 283
-#define PERCENT_LOCATIONS 284
-#define PERCENT_NAME_PREFIX 285
-#define PERCENT_NO_DEFAULT_PREC 286
-#define PERCENT_NO_LINES 287
-#define PERCENT_NONDETERMINISTIC_PARSER 288
-#define PERCENT_OUTPUT 289
-#define PERCENT_PARSE_PARAM 290
-#define PERCENT_PURE_PARSER 291
-#define PERCENT_REQUIRE 292
-#define PERCENT_SKELETON 293
-#define PERCENT_START 294
-#define PERCENT_TOKEN_TABLE 295
-#define PERCENT_VERBOSE 296
-#define PERCENT_YACC 297
-#define BRACED_CODE 298
-#define CHAR 299
-#define EPILOGUE 300
-#define EQUAL 301
-#define ID 302
-#define ID_COLON 303
-#define PERCENT_PERCENT 304
-#define PIPE 305
-#define PROLOGUE 306
-#define SEMICOLON 307
-#define TYPE 308
-#define PERCENT_UNION 309
+#define PERCENT_END_HEADER 277
+#define PERCENT_ERROR_VERBOSE 278
+#define PERCENT_EXPECT 279
+#define PERCENT_EXPECT_RR 280
+#define PERCENT_FILE_PREFIX 281
+#define PERCENT_GLR_PARSER 282
+#define PERCENT_INITIAL_ACTION 283
+#define PERCENT_LEX_PARAM 284
+#define PERCENT_LOCATIONS 285
+#define PERCENT_NAME_PREFIX 286
+#define PERCENT_NO_DEFAULT_PREC 287
+#define PERCENT_NO_LINES 288
+#define PERCENT_NONDETERMINISTIC_PARSER 289
+#define PERCENT_OUTPUT 290
+#define PERCENT_PARSE_PARAM 291
+#define PERCENT_PURE_PARSER 292
+#define PERCENT_REQUIRE 293
+#define PERCENT_SKELETON 294
+#define PERCENT_START 295
+#define PERCENT_START_HEADER 296
+#define PERCENT_TOKEN_TABLE 297
+#define PERCENT_VERBOSE 298
+#define PERCENT_YACC 299
+#define BRACED_CODE 300
+#define CHAR 301
+#define EPILOGUE 302
+#define EQUAL 303
+#define ID 304
+#define ID_COLON 305
+#define PERCENT_PERCENT 306
+#define PIPE 307
+#define PROLOGUE 308
+#define SEMICOLON 309
+#define TYPE 310
+#define PERCENT_UNION 311
 
 
 
@@ -166,7 +170,7 @@ typedef union YYSTYPE
   unsigned char character;
 }
 /* Line 1544 of yacc.c.  */
-#line 170 "parse-gram.h"
+#line 174 "parse-gram.h"
 	YYSTYPE;
 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1