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c++: improvements on symbol kinds

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Instead of

    /// (Internal) symbol kind.
    enum symbol_kind_type
    {
      YYNTOKENS = 5, ///< Number of tokens.
      YYSYMBOL_YYEMPTY = -2,
      YYSYMBOL_YYEOF = 0,                      // END_OF_FILE
      YYSYMBOL_YYERROR = 1,                    // error
      YYSYMBOL_YYUNDEF = 2,                    // $undefined
      YYSYMBOL_TEXT = 3,                       // TEXT
      YYSYMBOL_NUMBER = 4,                     // NUMBER
      YYSYMBOL_YYACCEPT = 5,                   // $accept
      YYSYMBOL_result = 6,                     // result
      YYSYMBOL_list = 7,                       // list
      YYSYMBOL_item = 8                        // item
    };

generate

    /// Symbol kinds.
    struct symbol_kind
    {
      enum symbol_kind_type
      {
        YYNTOKENS = 5, ///< Number of tokens.
        S_YYEMPTY = -2,
        S_YYEOF = 0,                             // END_OF_FILE
        S_YYERROR = 1,                           // error
        S_YYUNDEF = 2,                           // $undefined
        S_TEXT = 3,                              // TEXT
        S_NUMBER = 4,                            // NUMBER
        S_YYACCEPT = 5,                          // $accept
        S_result = 6,                            // result
        S_list = 7,                              // list
        S_item = 8                               // item
      };
    };

* data/skeletons/c++.m4 (api.symbol.prefix): Define to S_.
Adjust all the uses.
(b4_public_types_declare): Nest the enum inside 'struct symbol_kind'.
* data/skeletons/glr.cc, data/skeletons/lalr1.cc,
* tests/headers.at, tests/local.at: Adjust.
This commit is contained in:
Akim Demaille
2020-04-09 08:19:40 +02:00
parent 6c5f690da4
commit 00a654c8ad
5 changed files with 38 additions and 26 deletions
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16
data/skeletons/lalr1.cc
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@@ -700,7 +700,7 @@ b4_parse_error_case([verbose], [[
]b4_parser_class[::by_state::type_get () const YY_NOEXCEPT
{
if (state == empty_state)
return ]b4_symbol_prefix[YYEMPTY;
return symbol_kind::]b4_symbol_prefix[YYEMPTY;
else
return YY_CAST (symbol_kind_type, yystos_[+state]);
}
@@ -725,7 +725,7 @@ b4_parse_error_case([verbose], [[
b4_symbol_variant([that.type_get ()],
[value], [move], [YY_MOVE (that.value)])])[
// that is emptied.
that.type = ]b4_symbol_prefix[YYEMPTY;
that.type = symbol_kind::]b4_symbol_prefix[YYEMPTY;
}
#if YY_CPLUSPLUS < 201103L
@@ -1089,7 +1089,7 @@ b4_dollar_popdef])[]dnl
error, discard it. */
// Return failure if at end of input.
if (yyla.type_get () == ]b4_symbol_prefix[YYEOF)
if (yyla.type_get () == symbol_kind::]b4_symbol_prefix[YYEOF)
YYABORT;
else if (!yyla.empty ())
{
@@ -1131,8 +1131,9 @@ b4_dollar_popdef])[]dnl
yyn = yypact_[+yystack_[0].state];
if (!yy_pact_value_is_default_ (yyn))
{
yyn += ]b4_symbol_prefix[YYERROR;
if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == ]b4_symbol_prefix[YYERROR)
yyn += symbol_kind::]b4_symbol_prefix[YYERROR;
if (0 <= yyn && yyn <= yylast_
&& yycheck_[yyn] == symbol_kind::]b4_symbol_prefix[YYERROR)
{
yyn = yytable_[yyn];
if (0 < yyn)
@@ -1244,7 +1245,8 @@ b4_dollar_popdef])[]dnl
for (int yyx = 0; yyx < YYNTOKENS; ++yyx)
{
symbol_kind_type yysym = YY_CAST (symbol_kind_type, yyx);
if (yysym != ]b4_symbol_prefix[YYERROR && yysym != ]b4_symbol_prefix[YYUNDEF
if (yysym != symbol_kind::]b4_symbol_prefix[YYERROR
&& yysym != symbol_kind::]b4_symbol_prefix[YYUNDEF
&& yyparser_.yy_lac_check_ (yysym))
{
if (!yyarg)
@@ -1266,7 +1268,7 @@ b4_dollar_popdef])[]dnl
int yychecklim = yylast_ - yyn + 1;
int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
for (int yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck_[yyx + yyn] == yyx && yyx != ]b4_symbol_prefix[YYERROR
if (yycheck_[yyx + yyn] == yyx && yyx != symbol_kind::]b4_symbol_prefix[YYERROR
&& !yy_table_value_is_error_ (yytable_[yyx + yyn]))
{
if (!yyarg)