c++: remove the yy prefix from some functions

yy::parser features a parse() function, not a yyparse() one.

* data/skeletons/lalr1.cc (yyreport_syntax_error)
(context::yyexpected_tokens): Rename as...
(report_syntax_error, context::expected_tokens): these.

TODO

@@ -1,20 +1,11 @@
 * Bison 3.6
-** C++
-yyreport_syntax_error should always be the name of the reporting, yyparse
-should not have to dispatch to several APIs.
-
 ** Documentation
-- yyexpected_tokens in all the languages.
+- yyexpected_tokens/expected_tokens/expectedTokens in all the languages.
 - YYENOMEM
 - YYERRCODE, YYUNDEF, YYEOF
 - i18n in Java
 - symbol.type_get should be kind_get, and it's not documented.
 
-** Naming conventions
-There's no good reason to use the "yy" prefix in parser::context, is there?
-See also the case of Java.  We should keep the prefix for private
-implementation details, but maybe not for public APIs.
-
 ** User token number, internal symbol number, external token number, etc.
 There is some confusion over these terms, which is even a problem for
 translators.  We need something clear, especially if we provide access to

data/skeletons/lalr1.cc

@@ -247,7 +247,7 @@ m4_define([b4_shared_declarations],
       /// Put in YYARG at most YYARGN of the expected tokens, and return the
       /// number of tokens stored in YYARG.  If YYARG is null, return the
       /// number of expected tokens (guaranteed to be less than YYNTOKENS).
-      int yyexpected_tokens (symbol_kind_type yyarg[], int yyargn) const;
+      int expected_tokens (symbol_kind_type yyarg[], int yyargn) const;
 
     private:
       const ]b4_parser_class[& yyparser_;
@@ -276,7 +276,7 @@ m4_define([b4_shared_declarations],
       [custom], [[
     /// Report a syntax error
     /// \param yyctx     the context in which the error occurred.
-    void yyreport_syntax_error (const context& yyctx) const;]],
+    void report_syntax_error (const context& yyctx) const;]],
       [detailed\|verbose], [[
     /// The arguments of the error message.
     int yy_syntax_error_arguments_ (const context& yyctx,
@@ -1074,7 +1074,7 @@ b4_dollar_popdef])[]dnl
         error (]b4_join(b4_locations_if([yyla.location]), [[YY_MOVE (msg)]])[);]],
                   [custom], [[
         context yyctx (*this, yyla);
-        yyreport_syntax_error (yyctx);]],
+        report_syntax_error (yyctx);]],
                   [[
         context yyctx (*this, yyla);
         std::string msg = yysyntax_error_ (yyctx);
@@ -1230,7 +1230,7 @@ b4_dollar_popdef])[]dnl
   {}
 
   int
-  ]b4_parser_class[::context::yyexpected_tokens (symbol_kind_type yyarg[], int yyargn) const
+  ]b4_parser_class[::context::expected_tokens (symbol_kind_type yyarg[], int yyargn) const
   {
     // Actual number of expected tokens
     int yycount = 0;
@@ -1462,7 +1462,7 @@ b4_dollar_popdef])[]dnl
       {
         if (yyarg)
           yyarg[0] = yyctx.token ();
-        int yyn = yyctx.yyexpected_tokens (yyarg ? yyarg + 1 : yyarg, yyargn - 1);
+        int yyn = yyctx.expected_tokens (yyarg ? yyarg + 1 : yyarg, yyargn - 1);
         return yyn + 1;
       }
     return 0;

tests/local.at

@@ -746,7 +746,7 @@ void
   std::cerr << ]AT_LOCATION_IF([l << ": " << ])[m << '\n';
 }]AT_ERROR_CUSTOM_IF([[
 void
-]AT_NAMESPACE[::parser::yyreport_syntax_error (const context& ctx) const
+]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],[[
@@ -762,7 +762,7 @@ void
   {
     enum { TOKENMAX = 10 };
     symbol_kind_type expected[TOKENMAX];
-    int n = ctx.yyexpected_tokens (expected, TOKENMAX);
+    int n = ctx.expected_tokens (expected, TOKENMAX);
     if (0 < n)
       {
         std::cerr << " (expected:";