Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch maint

Browse Source 
* maint:
  maint: post-release administrivia
  version 3.3.2
  style: minor fixes
  NEWS: named constructors are preferable to symbol_type ctors
  gram: fix handling of nterms in actions when some are unused
  style: rename local variable
  CI: update the ICC serial number for travis-ci.org
This commit is contained in:
Akim Demaille
2019-02-03 15:23:54 +01:00
parent 56c00ed1ea 3d25b52a10
commit cf96d1b0af
10 changed files with 198 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
NEWS
View File

@@ -9,6 +9,13 @@ GNU Bison NEWS
When given -fsyntax-only, the diagnostics are reported, but no output is
generated.
* Noteworthy changes in release 3.3.2 (2019-02-03) [stable]
** Bug fixes
Bison 3.3 failed to generate parsers for grammars with unused nonterminal
symbols.
* Noteworthy changes in release 3.3.1 (2019-01-27) [stable]
** Changes
@@ -225,17 +232,18 @@ GNU Bison NEWS
symbol_type (int token, const int&);
symbol_type (int token);
which should be used in a Flex-scanner as follows.
%%
[a-z]+ return yy::parser::symbol_type (ID, yytext);
[0-9]+ return yy::parser::symbol_type (INT, text_to_int (yytext);
":" return yy::parser::symbol_type (’:’);
<<EOF>> return yy::parser::symbol_type (0);
Correct matching between token types and value types is checked via
'assert'. For instance, 'symbol_type (ID, 42)' would abort (while
'make_ID (42)' would not even compile).
'assert'; for instance, 'symbol_type (ID, 42)' would abort. Named
constructors are preferable, as they offer better type safety (for
instance 'make_ID (42)' would not even compile), but symbol_type
constructors may help when token types are discovered at run-time, e.g.,
[a-z]+ {
if (auto i = lookup_keyword (yytext))
return yy::parser::symbol_type (i);
else
return yy::parser::make_ID (yytext);
}
*** C++: Variadic emplace
@@ -3488,7 +3496,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
LocalWords: Heimbigner AST src ast Makefile srcdir MinGW xxlex XXSTYPE
LocalWords: XXLTYPE strictfp IDEs ffixit fdiagnostics parseable fixits
LocalWords: Wdeprecated yytext Variadic variadic yyrhs yyphrs RCS README
LocalWords: noexcept constexpr ispell american
LocalWords: noexcept constexpr ispell american deprecations
Local Variables:
ispell-dictionary: "american"