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c++: also use symbol_type_type

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Because of the insane current implementation of glr.cc, things are a
bit nasty.  We will rename symbol_number_type as symbol_type_type
later, to keep this commit small.

* data/skeletons/c++.m4 (b4_declare_symbol_enum): New.
Also define YYNTOKENS to avoid type clashes when yyntokens_ was
actually defined in another enum.
Use it.
(symbol_number_type): Be an alias of symbol_type_type.
Use YYSYMBOL_YYEMPTY and the like.
Use symbol_number_type where appropriate.
(empty_symbol): Remove.
(yytranslate_): Use symbol_number_type, not token_number_type.
* data/skeletons/lalr1.cc: Use symbol_number_type where appropriate.
Adjust to the replacement of empty_symbol by YYSYMBOL_YYEMPTY.
(yy_error_token_, yy_undef_token_, yyeof_, yyntokens_): Remove.
Adjust dependencies.

* data/skeletons/glr.cc: Use symbol_number_type where appropriate.
Forward definitions of YYSYMBOL_YYEMPTY, etc. to glr.c.

* tests/headers.at: Accept YYNTOKENS and other YYSYMBOL_*.
* tests/local.at (AT_YYERROR_DEFINE(c++)): Use symbol_number_type.
This commit is contained in:
Akim Demaille
2020-03-29 17:06:16 +02:00
parent 65df8d6747
commit 7e28dbea11
5 changed files with 109 additions and 77 deletions
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26
data/skeletons/glr.cc
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@@ -66,19 +66,24 @@ m4_defn([b4_parse_param]))],
[[b4_namespace_ref::b4_parser_class[& yyparser], [[yyparser]]]])
])
# b4_declare_symbol_enum
# ----------------------
m4_append([b4_declare_symbol_enum],
[[typedef symbol_type_type yysymbol_type_t;
]])
# b4_yy_symbol_print_define
# -------------------------
# Bypass the default implementation to generate the "yy_symbol_print"
# and "yy_symbol_value_print" functions.
m4_define([b4_yy_symbol_print_define],
[[
/*--------------------.
[[/*--------------------.
| Print this symbol. |
`--------------------*/
static void
yy_symbol_print (FILE *, int yytype,
yy_symbol_print (FILE *, ]b4_namespace_ref::b4_parser_class[::symbol_number_type yytype,
const ]b4_namespace_ref::b4_parser_class[::semantic_type *yyvaluep]b4_locations_if([[,
const ]b4_namespace_ref::b4_parser_class[::location_type *yylocationp]])[]b4_user_formals[)
{
@@ -170,7 +175,7 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
`--------------------*/
void
]b4_parser_class[::yy_symbol_value_print_ (int yytype,
]b4_parser_class[::yy_symbol_value_print_ (symbol_number_type yytype,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[)
{]b4_locations_if([[
@@ -184,7 +189,7 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
void
]b4_parser_class[::yy_symbol_print_ (int yytype,
]b4_parser_class[::yy_symbol_print_ (symbol_number_type yytype,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[)
{
@@ -320,14 +325,14 @@ b4_percent_code_get([[requires]])[
/// \param yytype The token type.
/// \param yyvaluep Its semantic value.]b4_locations_if([[
/// \param yylocationp Its location.]])[
virtual void yy_symbol_value_print_ (int yytype,
virtual void yy_symbol_value_print_ (symbol_number_type yytype,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[);
/// \brief Report a symbol on the debug stream.
/// \param yytype The token type.
/// \param yyvaluep Its semantic value.]b4_locations_if([[
/// \param yylocationp Its location.]])[
virtual void yy_symbol_print_ (int yytype,
virtual void yy_symbol_print_ (symbol_number_type yytype,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[);
private:
@@ -350,6 +355,13 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]],
#endif
]b4_namespace_close[
]m4_define([b4_declare_symbol_enum],
[[typedef ]b4_namespace_ref[::]b4_parser_class[::symbol_number_type yysymbol_type_t;
#define YYSYMBOL_YYEMPTY ]b4_namespace_ref[::]b4_parser_class[::YYSYMBOL_YYEMPTY
#define YYSYMBOL_YYERROR ]b4_namespace_ref[::]b4_parser_class[::YYSYMBOL_YYERROR
#define YYSYMBOL_YYEOF ]b4_namespace_ref[::]b4_parser_class[::YYSYMBOL_YYEOF
#define YYSYMBOL_YYUNDEF ]b4_namespace_ref[::]b4_parser_class[::YYSYMBOL_YYUNDEF
]])[
]b4_percent_code_get([[provides]])[
]m4_popdef([b4_parse_param])dnl
])