parser: style changes

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 0552ba212a001a5e30d8b8a479b674c0074010e5..fd749368d50ebcfa12ffcb784fd99b2ee572b346 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -2,9 +2,18 @@ GNU Bison NEWS
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
+** Incompatible changes
+
+*** Obsolete features
+
+  Support for YYFAIL is removed (deprecated in Bison 2.4.2).
+  Support for yystype and yyltype (instead of YYSTYPE and YYLTYPE)
+  is removed (deprecated in Bison 1.875).
+  Support for YYPARSE_PARAM is removed (deprecated in Bison 1.875).
+
 ** Warnings
 
-*** Warning categories are now displayed in warnings
+*** Warning categories are now displayed
 
   For instance:
 
@@ -74,7 +83,19 @@ GNU Bison NEWS
   Also, it is possible to add code to the parser's constructors using
   "%code init" and "%define init_throws".
 
-** C++ skeleton improvements
+** C++ skeletons improvements
+
+*** parser header (%defines) is no longer mandatory (lalr1.cc)
+
+  In which case, if needed, the support classes are defined in the generated
+  parser, instead of additional files (location.hh, position.hh and
+  stack.hh).
+
+*** locations are no longer mandatory (lalr1.cc, glr.cc)
+
+  Both lalr1.cc and glr.cc no longer require %location.
+
+*** syntax_error exception (lalr1.cc)
 
   The C++ parser features a syntax_error exception, which can be
   thrown from the scanner or from user rules to raise syntax errors.
@@ -122,14 +143,68 @@ GNU Bison NEWS
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
 
-* Noteworthy changes in release 2.5.90 (2012-07-05) [beta]
+* Noteworthy changes in release 2.6.2 (2012-08-03) [stable]
+
+** Bug fixes
+
+  Buffer overruns, complaints from Flex, and portability issues in the test
+  suite have been fixed.
+
+** Spaces in %lex- and %parse-param (lalr1.cc, glr.cc)
+
+  Trailing end-of-lines in %parse-param or %lex-param would result in
+  invalid C++.  This is fixed.
+
+** Spurious spaces and end-of-lines
+
+  The generated files no longer end (nor start) with empty lines.
+
+* Noteworthy changes in release 2.6.1 (2012-07-30) [stable]
+
+ Bison no longer executes user-specified M4 code when processing a grammar.
+
+** Future Changes
+
+  In addition to the removal of the features announced in Bison 2.6, the
+  next major release will remove the "Temporary hack for adding a semicolon
+  to the user action", as announced in the release 2.5.  Instead of:
+
+    exp: exp "+" exp { $$ = $1 + $3 };
+
+  write:
+
+    exp: exp "+" exp { $$ = $1 + $3; };
+
+** Bug fixes
+
+*** Type names are now properly escaped.
+
+*** glr.cc: set_debug_level and debug_level work as expected.
+
+*** Stray @ or $ in actions
+
+  While Bison used to warn about stray $ or @ in action rules, it did not
+  for other actions such as printers, destructors, or initial actions.  It
+  now does.
+
+** Type names in actions
+
+  For consistency with rule actions, it is now possible to qualify $$ by a
+  type-name in destructors, printers, and initial actions.  For instance:
+
+    %printer { fprintf (yyo, "(%d, %f)", $<ival>$, $<fval>$); } <*> <>;
+
+  will display two values for each typed and untyped symbol (provided
+  that YYSTYPE has both "ival" and "fval" fields).
+
+* Noteworthy changes in release 2.6 (2012-07-19) [stable]
 
 ** Future changes:
 
   The next major release of Bison will drop support for the following
   deprecated features.  Please report disagreements to bug-bison@gnu.org.
 
-*** K&C parsers
+*** K&R C parsers
 
   Support for generating parsers in K&R C will be removed.  Parsers
   generated for C support ISO C90, and are tested with ISO C99 and ISO C11