/usr/share/bison/glr.cc is in bison 2:3.0.4.dfsg-1build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 | # C++ GLR skeleton for Bison
# Copyright (C) 2002-2015 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
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This skeleton produces a C++ class that encapsulates a C glr parser.
# This is in order to reduce the maintenance burden. The glr.c
# skeleton is clean and pure enough so that there are no real
# problems. The C++ interface is the same as that of lalr1.cc. In
# fact, glr.c can replace yacc.c without the user noticing any
# difference, and similarly for glr.cc replacing lalr1.cc.
#
# The passing of parse-params
#
# The additional arguments are stored as members of the parser
# object, yyparser. The C routines need to carry yyparser
# 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
# (and c.m4 strips one level of quotes). This is a PITA, and
# explains why there are so many levels of quotes.
#
# The locations
#
# We use location.cc just like lalr1.cc, but because glr.c stores
# 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.
m4_define([b4_pure_flag], [1])
m4_include(b4_pkgdatadir/[c++.m4])
b4_bison_locations_if([m4_include(b4_pkgdatadir/[location.cc])])
m4_define([b4_parser_class_name],
[b4_percent_define_get([[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_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. |
`--------------------*/
]b4_function_define([yy_symbol_print],
[static void],
[[FILE *], []],
[[int yytype], [yytype]],
[[const ]b4_namespace_ref::b4_parser_class_name[::semantic_type *yyvaluep],
[yyvaluep]][]dnl
b4_locations_if([,
[[const ]b4_namespace_ref::b4_parser_class_name[::location_type *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],
[b4_syncline([@oline@], [@ofile@])[
]b4_yylloc_default_define[
#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
]b4_function_declare([yyerror],
[static void],b4_locations_if([
[[const ]b4_namespace_ref::b4_parser_class_name[::location_type *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_function_define([yyerror],
[static void],b4_locations_if([
[[const ]b4_namespace_ref::b4_parser_class_name[::location_type *yylocationp],
[yylocationp]],])
b4_parse_param,
[[const char* msg], [msg]])[
{
]b4_parse_param_use[]dnl
[ yyparser.error (]b4_locations_if([[*yylocationp, ]])[msg);
}
]b4_namespace_open[
]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], [
:])[
#if ]b4_api_PREFIX[DEBUG
]m4_ifset([b4_parse_param], [ ], [ :])[yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
#endif]b4_parse_param_cons[
{
}
]b4_parser_class_name::~b4_parser_class_name[ ()
{
}
int
]b4_parser_class_name[::parse ()
{
return ::yyparse (*this]b4_user_args[);
}
#if ]b4_api_PREFIX[DEBUG
/*--------------------.
| Print this symbol. |
`--------------------*/
inline void
]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
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;
YYUSE (yyo);
]b4_symbol_actions([printer])[
}
void
]b4_parser_class_name[::yy_symbol_print_ (int yytype,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[)
{
*yycdebug_ << (yytype < YYNTOKENS ? "token" : "nterm")
<< ' ' << yytname[yytype] << " ("]b4_locations_if([[
<< *yylocationp << ": "]])[;
yy_symbol_value_print_ (yytype, yyvaluep]b4_locations_if([[, yylocationp]])[);
*yycdebug_ << ')';
}
std::ostream&
]b4_parser_class_name[::debug_stream () const
{
return *yycdebug_;
}
void
]b4_parser_class_name[::set_debug_stream (std::ostream& o)
{
yycdebug_ = &o;
}
]b4_parser_class_name[::debug_level_type
]b4_parser_class_name[::debug_level () const
{
return yydebug;
}
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
])
# 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 <stdexcept>
#include <string>
#include <iostream>]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[
{
public:
]b4_public_types_declare[
/// Build a parser object.
]b4_parser_class_name[ (]b4_parse_param_decl[);
virtual ~]b4_parser_class_name[ ();
/// Parse.
/// \returns 0 iff parsing succeeded.
virtual int parse ();
/// The current debugging stream.
std::ostream& debug_stream () const;
/// Set the current debugging stream.
void set_debug_stream (std::ostream &);
/// Type for debugging levels.
typedef int debug_level_type;
/// The current debugging level.
debug_level_type debug_level () const;
/// Set the current debugging level.
void set_debug_level (debug_level_type l);
public:
/// 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);
# 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.]b4_locations_if([[
/// \param yylocationp Its location.]])[
virtual void yy_symbol_value_print_ (int 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,
const semantic_type* yyvaluep]b4_locations_if([[,
const location_type* yylocationp]])[);
private:
// Debugging.
std::ostream* yycdebug_;
#endif
]b4_parse_param_vars[
};
]dnl Redirections for glr.c.
b4_percent_define_flag_if([[global_tokens_and_yystype]],
[b4_token_defines])
[
#ifndef ]b4_api_PREFIX[STYPE
# define ]b4_api_PREFIX[STYPE ]b4_namespace_ref[::]b4_parser_class_name[::semantic_type
#endif
#ifndef ]b4_api_PREFIX[LTYPE
# define ]b4_api_PREFIX[LTYPE ]b4_namespace_ref[::]b4_parser_class_name[::location_type
#endif
]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++],
[2002-2015])[
// 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])[
]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])
|