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glr2.cc: don't prepare for subclassing

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I am not aware of people subclassing the parser class, and I fail to
see how this could be useful.  Rather than leaving a badly baked
feature (as in glr.cc currently), let's not support it at all, until
someone comes and explains why and how it would be useful.

* data/skeletons/glr2.cc (parser): We need no virtual function members.
This commit is contained in:
Akim Demaille
2021-01-16 06:54:02 +01:00
parent 0923da74e8
commit c1494a7871
1 changed files with 9 additions and 9 deletions
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18
data/skeletons/glr2.cc
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@@ -207,7 +207,7 @@ m4_define([b4_shared_declarations],
/// Build a parser object.
]b4_parser_class[ (]b4_parse_param_decl[);
virtual ~]b4_parser_class[ ();
~]b4_parser_class[ ();
/// Parse. An alias for parse ().
/// \returns 0 iff parsing succeeded.
@@ -215,7 +215,7 @@ m4_define([b4_shared_declarations],
/// Parse.
/// \returns 0 iff parsing succeeded.
virtual int parse ();
int parse ();
#if ]b4_api_PREFIX[DEBUG
/// The current debugging stream.
@@ -234,7 +234,7 @@ m4_define([b4_shared_declarations],
/// Report a syntax error.]b4_locations_if([[
/// \param loc where the syntax error is found.]])[
/// \param msg a description of the syntax error.
virtual void error (]b4_locations_if([[const location_type& loc, ]])[const std::string& msg);
void error (]b4_locations_if([[const location_type& loc, ]])[const std::string& msg);
]b4_parse_error_bmatch(
[custom\|detailed],
@@ -260,16 +260,16 @@ m4_define([b4_shared_declarations],
/// \param yykind The symbol kind.
/// \param yyval Its semantic value.]b4_locations_if([[
/// \param yyloc Its location.]])[
virtual void yy_symbol_value_print_ (symbol_kind_type yykind,
const value_type& yyval]b4_locations_if([[,
const location_type& yyloc]])[) const;
void yy_symbol_value_print_ (symbol_kind_type yykind,
const value_type& yyval]b4_locations_if([[,
const location_type& yyloc]])[) const;
/// \brief Report a symbol on the debug stream.
/// \param yykind The symbol kind.
/// \param yyval Its semantic value.]b4_locations_if([[
/// \param yyloc Its location.]])[
virtual void yy_symbol_print_ (symbol_kind_type yykind,
const value_type& yyval]b4_locations_if([[,
const location_type& yyloc]])[) const;
void yy_symbol_print_ (symbol_kind_type yykind,
const value_type& yyval]b4_locations_if([[,
const location_type& yyloc]])[) const;
private:
/// Debug stream.
std::ostream* yycdebug_;