X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3bb211139b8f250e7045f59a61a23c7e47ec6a3e..22b081deb7ab1d0ec7a279e5213fa7fdc2c85207:/data/glr.cc diff --git a/data/glr.cc b/data/glr.cc index 51460fa3..9a9d7764 100644 --- a/data/glr.cc +++ b/data/glr.cc @@ -1,6 +1,6 @@ # C++ GLR skeleton for Bison -# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, -# Inc. + +# Copyright (C) 2002-2012 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -27,7 +27,7 @@ # # The additional arguments are stored as members of the parser # object, yyparser. The C routines need to carry yyparser -# throughout the C parser; that easy: just let yyparser become an +# throughout the C parser; that's easy: make yyparser an # additional parse-param. But because the C++ skeleton needs to # know the "real" original parse-param, we save them # (b4_parse_param_orig). Note that b4_parse_param is overquoted @@ -37,14 +37,14 @@ # The locations # # We use location.cc just like lalr1.cc, but because glr.c stores -# the locations in a (C++) union, the position and location classes +# the locations in a union, the position and location classes # must not have a constructor. Therefore, contrary to lalr1.cc, we # must not define "b4_location_constructors". As a consequence the # user must initialize the first positions (in particular the # filename member). # We require a pure interface using locations. -m4_define([b4_locations_flag], [1]) +m4_define([b4_percent_define(locations)], []) m4_define([b4_pure_flag], [1]) # The header is mandatory. @@ -52,7 +52,8 @@ b4_defines_if([], [b4_fatal([b4_skeleton[: using %%defines is mandatory]])]) m4_include(b4_pkgdatadir/[c++.m4]) -m4_include(b4_pkgdatadir/[location.cc]) +b4_percent_define_ifdef([[location_type]], [], + [m4_include(b4_pkgdatadir/[location.cc])]) m4_define([b4_parser_class_name], [b4_percent_define_get([[parser_class_name]])]) @@ -76,9 +77,9 @@ m4_define([b4_yy_symbol_print_generate], [[FILE *], []], [[int yytype], [yytype]], [[const b4_namespace_ref::b4_parser_class_name::semantic_type *yyvaluep], - [yyvaluep]], + [yyvaluep]], [[const b4_namespace_ref::b4_parser_class_name::location_type *yylocationp], - [yylocationp]], + [yylocationp]], b4_parse_param)[ { ]b4_parse_param_use[]dnl @@ -93,7 +94,8 @@ m4_append([b4_post_prologue], b4_c_ansi_function_decl([yyerror], [static void], - [[b4_namespace_ref::b4_parser_class_name::location_type *yylocationp], [yylocationp]], + [[const b4_namespace_ref::b4_parser_class_name::location_type *yylocationp], + [yylocationp]], b4_parse_param, [[const char* msg], [msg]])]) @@ -107,7 +109,8 @@ m4_append([b4_epilogue], ]b4_c_ansi_function_def([yyerror], [static void], - [[b4_namespace_ref::b4_parser_class_name::location_type *yylocationp], [yylocationp]], + [[const b4_namespace_ref::b4_parser_class_name::location_type *yylocationp], + [yylocationp]], b4_parse_param, [[const char* msg], [msg]])[ { @@ -123,8 +126,7 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [ :])[ #if YYDEBUG - ]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false), - yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[ + ]m4_ifset([b4_parse_param], [ ], [ :])[yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[ #endif]b4_parse_param_cons[ { } @@ -146,27 +148,31 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl inline void ]b4_parser_class_name[::yy_symbol_value_print_ (int yytype, - const semantic_type* yyvaluep, const location_type* yylocationp) + const semantic_type* yyvaluep, + const location_type* yylocationp) { - /* Pacify ``unused variable'' warnings. */ - YYUSE (yyvaluep); YYUSE (yylocationp); + YYUSE (yyvaluep); + std::ostream& yyoutput = debug_stream (); + std::ostream& yyo = yyoutput; + YYUSE (yyo); switch (yytype) { ]b4_symbol_foreach([b4_symbol_printer])dnl [ default: - break; + break; } } void ]b4_parser_class_name[::yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, const location_type* yylocationp) + const semantic_type* yyvaluep, + const location_type* yylocationp) { *yycdebug_ << (yytype < YYNTOKENS ? "token" : "nterm") - << ' ' << yytname[yytype] << " (" - << *yylocationp << ": "; + << ' ' << yytname[yytype] << " (" + << *yylocationp << ": "; yy_symbol_value_print_ (yytype, yyvaluep, yylocationp); *yycdebug_ << ')'; } @@ -187,29 +193,28 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl ]b4_parser_class_name[::debug_level_type ]b4_parser_class_name[::debug_level () const { - return yydebug_; + return yydebug; } void ]b4_parser_class_name[::set_debug_level (debug_level_type l) { - yydebug_ = l; + yydebug = l; } #endif ]m4_popdef([b4_parse_param])dnl b4_namespace_close[ - ]]) # Let glr.c believe that the user arguments include the parser itself. m4_ifset([b4_parse_param], [m4_pushdef([b4_parse_param], - m4_dquote([[[b4_namespace_ref::b4_parser_class_name& yyparser], [[yyparser]]],] + m4_dquote([[[b4_namespace_ref::b4_parser_class_name& yyparser], [[yyparser]]],] m4_defn([b4_parse_param])))], [m4_pushdef([b4_parse_param], - [[[[b4_namespace_ref::b4_parser_class_name& yyparser], [[yyparser]]]]]) + [[[[b4_namespace_ref::b4_parser_class_name& yyparser], [[yyparser]]]]]) ]) m4_include(b4_pkgdatadir/[glr.c]) m4_popdef([b4_parse_param]) @@ -217,31 +222,26 @@ m4_popdef([b4_parse_param]) m4_divert_push(0) @output(b4_spec_defines_file@)@ b4_copyright([Skeleton interface for Bison GLR parsers in C++], - [2002, 2003, 2004, 2005, 2006])[ + [2002-2012])[ /* C++ GLR parser skeleton written by Akim Demaille. */ -#ifndef PARSER_HEADER_H -# define PARSER_HEADER_H +]b4_cpp_guard_open([b4_spec_defines_file])[ ]b4_percent_code_get([[requires]])[ +#include #include #include +]b4_percent_define_ifdef([[location_type]], [], + [[#include "location.hh"]])[ /* Using locations. */ -#define YYLSP_NEEDED ]b4_locations_flag[ - -]b4_namespace_open[ - class position; - class location; -]b4_namespace_close[ - -#include "location.hh" +#define YYLSP_NEEDED ]b4_locations_if([1], [0])[ /* Enabling traces. */ #ifndef YYDEBUG -# define YYDEBUG ]b4_debug_flag[ +# define YYDEBUG ]b4_parse_trace_if([1], [0])[ #endif /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. @@ -249,17 +249,17 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++], the previous symbol: RHS[0] (always defined). */ #ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(Current, Rhs, N) \ - do \ - if (N) \ - { \ - (Current).begin = YYRHSLOC (Rhs, 1).begin; \ - (Current).end = YYRHSLOC (Rhs, N).end; \ - } \ - else \ - { \ - (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end; \ - } \ +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (N) \ + { \ + (Current).begin = YYRHSLOC (Rhs, 1).begin; \ + (Current).end = YYRHSLOC (Rhs, N).end; \ + } \ + else \ + { \ + (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end; \ + } \ while (/*CONSTCOND*/ 0) #endif @@ -268,28 +268,7 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++], class ]b4_parser_class_name[ { public: - /// Symbol semantic values. -#ifndef YYSTYPE -]m4_ifdef([b4_stype], -[ union semantic_type - { -b4_user_stype - };], -[m4_if(b4_tag_seen_flag, 0, -[[ typedef int semantic_type;]], -[[ typedef YYSTYPE semantic_type;]])])[ -#else - typedef YYSTYPE semantic_type; -#endif - /// Symbol locations. - typedef ]b4_percent_define_get([[location_type]])[ location_type; - /// Tokens. - struct token - { - ]b4_token_enums(b4_tokens)[ - }; - /// Token type. - typedef token::yytokentype token_type; +]b4_public_types_declare[ /// Build a parser object. ]b4_parser_class_name[ (]b4_parse_param_decl[); @@ -311,14 +290,11 @@ b4_user_stype /// Set the current debugging level. void set_debug_level (debug_level_type l); - private: - public: /// Report a syntax error. /// \param loc where the syntax error is found. /// \param msg a description of the syntax error. virtual void error (const location_type& loc, const std::string& msg); - private: #if YYDEBUG public: @@ -327,32 +303,20 @@ b4_user_stype /// \param yyvaluep Its semantic value. /// \param yylocationp Its location. virtual void yy_symbol_value_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); + const semantic_type* yyvaluep, + const location_type* yylocationp); /// \brief Report a symbol on the debug stream. /// \param yytype The token type. /// \param yyvaluep Its semantic value. /// \param yylocationp Its location. virtual void yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); + const semantic_type* yyvaluep, + const location_type* yylocationp); private: /* Debugging. */ - int yydebug_; std::ostream* yycdebug_; #endif - - /// \brief Reclaim the memory associated to a symbol. - /// \param yymsg Why this token is reclaimed. - /// \param yytype The symbol type. - /// \param yyvaluep Its semantic value. - /// \param yylocationp Its location. - inline void yydestruct_ (const char* yymsg, - int yytype, - semantic_type* yyvaluep, - location_type* yylocationp); - ]b4_parse_param_vars[ }; @@ -368,8 +332,6 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]], #endif ]b4_namespace_close[ - -]b4_percent_code_get([[provides]])[]dnl - -[#endif /* ! defined PARSER_HEADER_H */] -m4_divert_pop(0) +]b4_percent_code_get([[provides]])[ +]b4_cpp_guard_close([b4_spec_defines_file])[ +]m4_divert_pop(0)