X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ccdc1577ef7fb32a5e30cb655337e7cd42b98987..1fa19a769721658bb53177596531afbbea8b4e1c:/data/glr.cc diff --git a/data/glr.cc b/data/glr.cc index 2f986da2..0164eda6 100644 --- a/data/glr.cc +++ b/data/glr.cc @@ -1,6 +1,6 @@ # C++ GLR skeleton for Bison -# Copyright (C) 2002-2012 Free Software Foundation, Inc. +# Copyright (C) 2002-2013 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 @@ -43,17 +43,11 @@ # user must initialize the first positions (in particular the # filename member). -# We require a pure interface using locations. -m4_define([b4_percent_define(locations)], []) +# We require a pure interface. m4_define([b4_pure_flag], [1]) -# The header is mandatory. -b4_defines_if([], - [b4_fatal([b4_skeleton[: using %%defines is mandatory]])]) - m4_include(b4_pkgdatadir/[c++.m4]) -b4_percent_define_ifdef([[location_type]], [], - [m4_include(b4_pkgdatadir/[location.cc])]) +b4_bison_locations_if([m4_include(b4_pkgdatadir/[location.cc])]) m4_define([b4_parser_class_name], [b4_percent_define_get([[parser_class_name]])]) @@ -61,69 +55,103 @@ m4_define([b4_parser_class_name], # Save the parse parameters. m4_define([b4_parse_param_orig], m4_defn([b4_parse_param])) +# b4_parse_param_wrap +# ------------------- +# New ones. +m4_ifset([b4_parse_param], +[m4_define([b4_parse_param_wrap], + [[b4_namespace_ref::b4_parser_class_name[& yyparser], [[yyparser]]],] +m4_defn([b4_parse_param]))], +[m4_define([b4_parse_param_wrap], + [[b4_namespace_ref::b4_parser_class_name[& yyparser], [[yyparser]]]]) +]) + -# b4_yy_symbol_print_generate -# --------------------------- +# 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_generate], +m4_define([b4_yy_symbol_print_define], [[ /*--------------------. | Print this symbol. | `--------------------*/ -]b4_c_ansi_function_def([yy_symbol_print], +]b4_function_define([yy_symbol_print], [static void], - [[FILE *], []], - [[int yytype], [yytype]], + [[FILE *], []], + [[int yytype], [yytype]], [[const ]b4_namespace_ref::b4_parser_class_name[::semantic_type *yyvaluep], - [yyvaluep]], + [yyvaluep]][]dnl +b4_locations_if([, [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp], - [yylocationp]], + [yylocationp]]]), b4_parse_param)[ { ]b4_parse_param_use[]dnl [ yyparser.yy_symbol_print_ (yytype, yyvaluep]b4_locations_if([, yylocationp])[); } -]]) +]])[ +# Hijack the initial action to initialize the locations. +]b4_bison_locations_if([m4_define([b4_initial_action], +[yylloc.initialize ();]m4_ifdef([b4_initial_action], [ +m4_defn([b4_initial_action])]))])[ # Hijack the post prologue to insert early definition of YYLLOC_DEFAULT # and declaration of yyerror. -m4_append([b4_post_prologue], +]m4_append([b4_post_prologue], [b4_syncline([@oline@], [@ofile@])[ ]b4_yylloc_default_define[ #define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc) -]b4_c_ansi_function_decl([yyerror], - [static void], +]b4_function_declare([yyerror], + [static void],b4_locations_if([ [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp], - [yylocationp]], + [yylocationp]],]) b4_parse_param, [[const char* msg], [msg]])]) +#undef yynerrs +#undef yychar +#undef yylval]b4_locations_if([ +#undef yylloc]) + +m4_if(b4_prefix, [yy], [], +[[/* Substitute the variable and function names. */ +#define yyparse ]b4_prefix[parse +#define yylex ]b4_prefix[lex +#define yyerror ]b4_prefix[error +#define yydebug ]b4_prefix[debug +]]b4_pure_if([], [[ +#define yylval ]b4_prefix[lval +#define yychar ]b4_prefix[char +#define yynerrs ]b4_prefix[nerrs]b4_locations_if([[ +#define yylloc ]b4_prefix[lloc]])])) + # Hijack the epilogue to define implementations (yyerror, parser member # functions etc.). m4_append([b4_epilogue], [b4_syncline([@oline@], [@ofile@])[ + /*------------------. | Report an error. | `------------------*/ -]b4_c_ansi_function_def([yyerror], - [static void], +]b4_function_define([yyerror], + [static void],b4_locations_if([ [[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp], - [yylocationp]], + [yylocationp]],]) b4_parse_param, [[const char* msg], [msg]])[ { ]b4_parse_param_use[]dnl -[ yyparser.error (*yylocationp, msg); +[ yyparser.error (]b4_locations_if([[*yylocationp, ]])[msg); } ]b4_namespace_open[ -]dnl In this section, the parse param are the original parse_params. +]dnl In this section, the parse params are the original parse_params. m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl [ /// Build a parser object. ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [ @@ -151,10 +179,10 @@ 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) - { - YYUSE (yylocationp); + const semantic_type* yyvaluep]b4_locations_if([[, + const location_type* yylocationp]])[) + {]b4_locations_if([[ + YYUSE (yylocationp);]])[ YYUSE (yyvaluep); std::ostream& yyoutput = debug_stream (); std::ostream& yyo = yyoutput; @@ -170,13 +198,13 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl void ]b4_parser_class_name[::yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp) + const semantic_type* yyvaluep]b4_locations_if([[, + const location_type* yylocationp]])[) { *yycdebug_ << (yytype < YYNTOKENS ? "token" : "nterm") - << ' ' << yytname[yytype] << " (" - << *yylocationp << ": "; - yy_symbol_value_print_ (yytype, yyvaluep, yylocationp); + << ' ' << yytname[yytype] << " ("]b4_locations_if([[ + << *yylocationp << ": "]])[; + yy_symbol_value_print_ (yytype, yyvaluep]b4_locations_if([[, yylocationp]])[); *yycdebug_ << ')'; } @@ -202,46 +230,35 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl void ]b4_parser_class_name[::set_debug_level (debug_level_type l) { + // Actually, it is yydebug which is really used. 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], - [[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_close ]) -m4_include(b4_pkgdatadir/[glr.c]) -m4_popdef([b4_parse_param]) -m4_divert_push(0) -@output(b4_spec_defines_file@)@ -b4_copyright([Skeleton interface for Bison GLR parsers in C++], - [2002-2012])[ - -/* C++ GLR parser skeleton written by Akim Demaille. */ - -]b4_cpp_guard_open([b4_spec_defines_file])[ - -]b4_percent_code_get([[requires]])[ +# b4_shared_declarations +# ---------------------- +# Declaration that might either go into the header (if --defines) +# or open coded in the parser body. +m4_define([b4_shared_declarations], +[m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl +b4_percent_code_get([[requires]])[ #include #include -#include -]b4_percent_define_ifdef([[location_type]], [], - [[#include "location.hh"]])[ +#include ]b4_defines_if([ +b4_bison_locations_if([[#include "location.hh"]])])[ ]b4_YYDEBUG_define[ ]b4_namespace_open[ +]b4_defines_if([], +[b4_bison_locations_if([b4_position_define +b4_location_define])])[ + /// A Bison parser. class ]b4_parser_class_name[ { @@ -269,29 +286,29 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++], void set_debug_level (debug_level_type l); public: - /// Report a syntax error. - /// \param loc where the syntax error is found. + /// 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 (const location_type& loc, const std::string& msg); + virtual void error (]b4_locations_if([[const location_type& loc, ]])[const std::string& msg); # if ]b4_api_PREFIX[DEBUG public: /// \brief Report a symbol value on the debug stream. /// \param yytype The token type. - /// \param yyvaluep Its semantic value. - /// \param yylocationp Its location. + /// \param yyvaluep Its semantic value.]b4_locations_if([[ + /// \param yylocationp Its location.]])[ virtual void yy_symbol_value_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); + 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. - /// \param yylocationp Its location. + /// \param yyvaluep Its semantic value.]b4_locations_if([[ + /// \param yylocationp Its location.]])[ virtual void yy_symbol_print_ (int yytype, - const semantic_type* yyvaluep, - const location_type* yylocationp); + const semantic_type* yyvaluep]b4_locations_if([[, + const location_type* yylocationp]])[); private: - /* Debugging. */ + // Debugging. std::ostream* yycdebug_; #endif @@ -300,7 +317,7 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++], ]dnl Redirections for glr.c. b4_percent_define_flag_if([[global_tokens_and_yystype]], -[b4_token_defines(b4_tokens)]) +[b4_token_defines]) [ #ifndef ]b4_api_PREFIX[STYPE # define ]b4_api_PREFIX[STYPE ]b4_namespace_ref[::]b4_parser_class_name[::semantic_type @@ -311,5 +328,23 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]], ]b4_namespace_close[ ]b4_percent_code_get([[provides]])[ +]m4_popdef([b4_parse_param])dnl +]) + +b4_defines_if( +[b4_output_begin([b4_spec_defines_file]) +b4_copyright([Skeleton interface for Bison GLR parsers in C++], + [2002-2013])[ + +// C++ GLR parser skeleton written by Akim Demaille. + +]b4_cpp_guard_open([b4_spec_defines_file])[ +]b4_shared_declarations[ ]b4_cpp_guard_close([b4_spec_defines_file])[ -]m4_divert_pop(0) +]b4_output_end()]) + +# Let glr.c (and b4_shared_declarations) believe that the user +# arguments include the parser itself. +m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_wrap])) +m4_include(b4_pkgdatadir/[glr.c]) +m4_popdef([b4_parse_param])