style: YYUSE is private, make it YY_USE

This macro is not exposed to users, make start it with 'YY_'.

* data/skeletons/bison.m4, data/skeletons/c.m4, data/skeletons/glr.c,
* data/skeletons/glr.cc, data/skeletons/glr2.cc, data/skeletons/lalr1.cc,
* src/parse-gram.c, tests/actions.at, tests/c++.at, tests/headers.at,
* tests/local.at (YYUSE): Rename as...
(YY_USE): this.

tests/actions.at

@@ -334,10 +334,10 @@ exp: { ]AT_CXX_IF([[std::cerr << @$ << '\n']],
 
 ]AT_YYLEX_PROTOTYPE[
 {]AT_PURE_IF([
-  YYUSE(lvalp);
-  YYUSE(llocp);], [AT_CXX_IF([
-  YYUSE(lvalp);
-  YYUSE(llocp);])])[
+  YY_USE (lvalp);
+  YY_USE (llocp);], [AT_CXX_IF([
+  YY_USE (lvalp);
+  YY_USE (llocp);])])[
   return 'x';
 }
 

tests/c++.at

@@ -1233,10 +1233,10 @@ list:
 
 item:
   'a'     { $$ = $][1; }
-| 'e'     { YYUSE ($$); YYUSE ($][1); error ("syntax error"); }
+| 'e'     { YY_USE ($$); YY_USE ($][1); error ("syntax error"); }
 // Not just 'E', otherwise we reduce when 'E' is the lookahead, and
 // then the stack is emptied, defeating the point of the test.
-| 'E' 'a' { YYUSE ($][1); $$ = $][2; }
+| 'E' 'a' { YY_USE ($][1); $$ = $][2; }
 | 'R'     { ]AT_VARIANT_IF([], [$$ = YY_NULLPTR; delete $][1]; )[YYERROR; }
 | 'p'     { $$ = $][1; }
 | 's'     { $$ = $][1; throw std::runtime_error ("reduction"); }
@@ -1395,7 +1395,7 @@ int yylex (yy::parser::semantic_type *lvalp)
   // Note: this argument is unused, but named on purpose.  There used to be a
   // bug with a macro that erroneously expanded this identifier to
   // yystackp->yyval.
-  YYUSE (lvalp);
+  YY_USE (lvalp);
   return ]AT_TOKEN([ZERO])[;
 }
 

tests/headers.at

@@ -339,9 +339,8 @@ AT_PERL_CHECK([[-n -0777 -e '
       |YYNTOKENS  # This is actual scoped in a C++ class.
       |YYPUSH_MORE(?:_DEFINED)?
       |S_(YY(ACCEPT|EMPTY|EOF|error|UNDEF))  # These guys are scoped.
-      |YYUSE
-      |YY_ATTRIBUTE(?:_PURE|_UNUSED)
       |YY(?:_REINTERPRET)?_CAST
+      |YY_ATTRIBUTE(?:_PURE|_UNUSED)
       |YY_CONSTEXPR
       |YY_COPY
       |YY_CPLUSPLUS
@@ -354,6 +353,7 @@ AT_PERL_CHECK([[-n -0777 -e '
       |YY_NOTHROW
       |YY_NULLPTR
       |YY_RVREF
+      |YY_USE
       |YY_\w+_INCLUDED
       |FILE\ \*yyo   # Function argument.
       |const\ yylocp # Function argument.

tests/local.at

@@ -584,11 +584,11 @@ m4_define([AT_YYLEX_DEFINE],  [AT_LANG_DISPATCH([$0], $@)])
 # AT_YYERROR_DEFINE
 # -------------------------
 # Must be called inside a AT_BISON_OPTION_PUSHDEFS/POPDEFS pair.
-m4_define([AT_YYERROR_FORMALS],  [AT_LANG_DISPATCH([$0], $@)])
-m4_define([AT_YYERROR_PROTOTYPE],[AT_LANG_DISPATCH([$0], $@)])
+m4_define([AT_YYERROR_FORMALS],        [AT_LANG_DISPATCH([$0], $@)])
+m4_define([AT_YYERROR_PROTOTYPE],      [AT_LANG_DISPATCH([$0], $@)])
 m4_define([AT_YYERROR_DECLARE_EXTERN], [AT_LANG_DISPATCH([$0], $@)])
-m4_define([AT_YYERROR_DECLARE],  [AT_LANG_DISPATCH([$0], $@)])
-m4_define([AT_YYERROR_DEFINE],   [AT_LANG_DISPATCH([$0], $@)])
+m4_define([AT_YYERROR_DECLARE],        [AT_LANG_DISPATCH([$0], $@)])
+m4_define([AT_YYERROR_DEFINE],         [AT_LANG_DISPATCH([$0], $@)])
 
 # AT_MAIN_DEFINE
 # --------------
@@ -671,7 +671,7 @@ yyreport_syntax_error (const yypcontext_t *ctx]AT_PARAM_IF([, AT_PARSE_PARAMS])[
 {
   int res = 0;]AT_PARAM_IF([m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  YY_USE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs], [[
   ++global_nerrs;
   ++*nerrs;]])[]AT_LOCATION_IF([[
   LOCATION_PRINT (stderr, *yypcontext_location (ctx));
@@ -707,11 +707,11 @@ static
 ]AT_YYERROR_PROTOTYPE[
 {]m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])dnl
+  YY_USE (\1);])dnl
 AT_YYERROR_SEES_LOC_IF([[
   LOCATION_PRINT (stderr, ]AT_LOC[);
   fprintf (stderr, ": ");]])[
-  fprintf (stderr, "%s\n", msg);]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  fprintf (stderr, "%s\n", msg);]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs], [[
   ++global_nerrs;
   ++*nerrs;]])[
 }]])])
@@ -779,7 +779,7 @@ m4_define([AT_YYERROR_DEFINE(c++)],
 [[/* A C++ error reporting function.  */
 void
 ]AT_NAMESPACE[::parser::error (]AT_LOCATION_IF([[const location_type& l, ]])[const std::string& m)
-{]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+{]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs], [[
   ++global_nerrs;
   ++*nerrs;]])[
   std::cerr << ]AT_LOCATION_IF([l << ": " << ])[m << '\n';
@@ -788,7 +788,7 @@ void
 ]AT_NAMESPACE[::parser::report_syntax_error (const context& ctx) const
 {]AT_PARAM_IF([m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  YY_USE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs], [[
   ++global_nerrs;
   ++*nerrs;]])[]AT_LOCATION_IF([[
   std::cerr << ctx.location () << ": ";]])[
@@ -1047,7 +1047,7 @@ m4_define([AT_YYERROR_DEFINE(java)],
   }
 ]], [[
   public void yyerror (String m)
-  {]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  {]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs], [[
     ++global_nerrs;
     ++*nerrs;]])[
     System.err.println (m);