X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/15f666695818e8821398763650e216f5d25d505e..ae7cd18c98d9bad7e95d4f4070d2d09e8db675f8:/data/glr.cc diff --git a/data/glr.cc b/data/glr.cc index 8da5a99a..e57308bd 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 @@ -46,13 +46,8 @@ # 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]])]) @@ -60,12 +55,23 @@ 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. | @@ -85,12 +91,16 @@ b4_locations_if([, ]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) @@ -102,10 +112,28 @@ m4_append([b4_post_prologue], [[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. | `------------------*/ @@ -123,7 +151,7 @@ m4_append([b4_epilogue], ]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], [ @@ -159,12 +187,7 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl std::ostream& yyoutput = debug_stream (); std::ostream& yyo = yyoutput; YYUSE (yyo); - switch (yytype) - { -]b4_symbol_foreach([b4_symbol_printer])dnl -[ default: - break; - } + ]b4_symbol_actions([printer])[ } @@ -208,38 +231,29 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl #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]) - # 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], -[b4_percent_code_get([[requires]])[ +[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[ { @@ -289,7 +303,7 @@ m4_define([b4_shared_declarations], const semantic_type* yyvaluep]b4_locations_if([[, const location_type* yylocationp]])[); private: - /* Debugging. */ + // Debugging. std::ostream* yycdebug_; #endif @@ -309,16 +323,23 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]], ]b4_namespace_close[ ]b4_percent_code_get([[provides]])[ -]]) +]m4_popdef([b4_parse_param])dnl +]) -m4_divert_push(0) -@output(b4_spec_defines_file@)@ +b4_defines_if( +[b4_output_begin([b4_spec_defines_file]) b4_copyright([Skeleton interface for Bison GLR parsers in C++], - [2002-2012])[ + [2002-2013])[ -/* C++ GLR parser skeleton written by Akim Demaille. */ +// 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])