Packets/ParseHelpers.ih

   1 # // Copyright (C) 2007
   2 # // Fraunhofer Institute for Open Communication Systems (FOKUS)
   3 # // Competence Center NETwork research (NET), St. Augustin, GERMANY
   4 # //     Stefan Bund <g0dil@berlios.de>
   5 # //
   6 # // This program is free software; you can redistribute it and/or modify
   7 # // it under the terms of the GNU General Public License as published by
   8 # // the Free Software Foundation; either version 2 of the License, or
   9 # // (at your option) any later version.
  10 # //
  11 # // This program is distributed in the hope that it will be useful,
  12 # // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # // GNU General Public License for more details.
  15 # //
  16 # // You should have received a copy of the GNU General Public License
  17 # // along with this program; if not, write to the
  18 # // Free Software Foundation, Inc.,
  19 # // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 #
  21 # /** \file
  22 #     \brief ParseHelpers internal header */
  23 #
  24 # if !defined(IH_ParseHelpers_)
  25 # define IH_ParseHelpers_ 1
  26 #
  27 # // Custom includes
  28 # include <boost/preprocessor/cat.hpp>
  29 # include <boost/preprocessor/if.hpp>
  30 # include <boost/preprocessor/expand.hpp>
  31 # include <boost/preprocessor/facilities/is_empty.hpp>
  32 # include <boost/preprocessor/punctuation/comma.hpp>
  33 # include "../Utils/mpl.hh"
  34 #
  35 # ////////////////////////////////ih.p///////////////////////////////////////
  36 #
  37 # ///////////////////////////////////////////////////////////////////////////
  38 # // SENF_PARSER_INITIALIZE
  39 #
  40 # define SENF_PARSER_INITIALIZE  BOOST_PP_CAT( SENF_PARSER_INITIALIZE_ , SENF_PARSER_TYPE )
  41 #
  42 # define SENF_PARSER_INITIALIZE_fix()                                                             \
  43     private:                                                                                      \
  44         SENF_MPL_SLOT_DEF_ZERO(index);                                                            \
  45         SENF_MPL_SLOT_DEF_ZERO(offset);                                                           \
  46         SENF_MPL_SLOT_DEF_ZERO(bit);                                                              \
  47         SENF_MPL_SLOT_DEF_ZERO(bitfield_size);                                                    \
  48         void init_chain(senf::mpl::rv<0>*) const {}                                               \
  49     public:
  50 #
  51 # define SENF_PARSER_INITIALIZE_var()                                                             \
  52     private:                                                                                      \
  53         SENF_MPL_SLOT_DEF_ZERO(index);                                                            \
  54         SENF_MPL_SLOT_DEF_ZERO(init_bytes);                                                       \
  55         SENF_MPL_SLOT_DEF_ZERO(bit);                                                              \
  56         SENF_MPL_SLOT_DEF_ZERO(bitfield_size);                                                    \
  57         SENF_MPL_SLOT_DEF_ZERO(group);                                                            \
  58         void init_chain(senf::mpl::rv<0>*) const {}                                               \
  59         size_type field_offset_(senf::mpl::rv<0>*) const { return 0; }                            \
  60     public:
  61 #
  62 # ///////////////////////////////////////////////////////////////////////////
  63 # // SENF_PARSER_INHERIT_*
  64 #
  65 # define SENF_PARSER_INHERIT_var(name)                                                            \
  66         typedef name parser_base_type;                                                            \
  67     private:                                                                                      \
  68         SENF_MPL_SLOT_SET(index, 1);                                                              \
  69         SENF_MPL_SLOT_SET(init_bytes, senf::init_bytes<name>::value);                             \
  70         size_type field_offset_(senf::mpl::rv<1>*) const {                                        \
  71             return senf::bytes( *static_cast<name const*>(this) );                                \
  72         }                                                                                         \
  73         void init_chain(senf::mpl::rv<1>*) const {                                                \
  74             name::init();                                                                         \
  75         }                                                                                         \
  76     public:
  77 #
  78 # define SENF_PARSER_INHERIT_fix(name)                                                            \
  79         typedef name parser_base_type;                                                            \
  80     private:                                                                                      \
  81         SENF_MPL_SLOT_SET(offset, name::fixed_bytes);                                             \
  82         SENF_MPL_SLOT_SET(index, 1);                                                              \
  83         void init_chain(senf::mpl::rv<1>*) const {                                                \
  84             name::init();                                                                         \
  85         }                                                                                         \
  86     public:
  87 #
  88 # ///////////////////////////////////////////////////////////////////////////
  89 # // SENF_PARSER_FIELD*
  90 # // SENF_PARSER_P_FIELD_*
  91 #
  92 # define SENF_PARSER_FIELD_var(name, type)    SENF_PARSER_FIELD_I(name, type, var, rw, public)
  93 # define SENF_PARSER_FIELD_RO_var(name, type) SENF_PARSER_FIELD_I(name, type, var, ro, public)
  94 # define SENF_PARSER_FIELD_fix(name, type)    SENF_PARSER_FIELD_I(name, type, fix, rw, public)
  95 # define SENF_PARSER_FIELD_RO_fix(name, type) SENF_PARSER_FIELD_I(name, type, fix, ro, public)
  96 #
  97 # define SENF_PARSER_P_FIELD_var(name, type)    SENF_PARSER_FIELD_I(name, type, var, rw, private)
  98 # define SENF_PARSER_P_FIELD_fix(name, type)    SENF_PARSER_FIELD_I(name, type, fix, rw, private)
  99 #
 100 # define SENF_PARSER_FIELD_I(name, type, ofstype, rwtype, access)                                 \
 101     access:                                                                                       \
 102         SENF_PARSER_FIELD_SETUP_I(name, type, ofstype, rwtype, access)                            \
 103         BOOST_PP_CAT(SENF_PARSER_I_FIELD_VAL_, rwtype) (name, type, access)                       \
 104     public:
 105 #
 106 # define SENF_PARSER_FIELD_SETUP_I(name, type, ofstype, rwtype, access)                           \
 107         SENF_PARSER_I_BITFIELD_RESET()                                                            \
 108         SENF_PARSER_I_FIELD_INTRO(name, type, access)                                             \
 109         BOOST_PP_CAT(SENF_PARSER_I_FIELD_INIT_, rwtype) (name, type, access)                      \
 110         BOOST_PP_CAT(SENF_PARSER_I_FIELD_OFS_, ofstype) (name, type, access)                      \
 111         BOOST_PP_CAT(SENF_PARSER_I_ADVANCE_OFS_, ofstype) (                                       \
 112             name, type,                                                                           \
 113             BOOST_PP_CAT(SENF_PARSER_I_SIZE_, ofstype) (name, type),                              \
 114             BOOST_PP_CAT(SENF_PARSER_I_INITBYTES_, ofstype) (name, type),                         \
 115             BOOST_PP_CAT(SENF_PARSER_I_ISVAR_, ofstype) (name, type),                             \
 116             access )
 117 #
 118 # ////////////////////////////////////////
 119 # // SENF_PARSER_I_FIELD_INTRO
 120 #
 121 # define SENF_PARSER_I_FIELD_INTRO(name, type, access)                                            \
 122         typedef type BOOST_PP_CAT(name, _t);                                                      \
 123         static size_type const BOOST_PP_CAT(name,_index) = SENF_MPL_SLOT_GET(index)+1;            \
 124     private:                                                                                      \
 125         SENF_MPL_SLOT_SET(index, BOOST_PP_CAT(name,_index));                                      \
 126     access:
 127 #
 128 # ////////////////////////////////////////
 129 # // SENF_PARSER_I_FIELD_INIT_*
 130 #
 131 # define SENF_PARSER_I_FIELD_INIT_rw(name, type, access)                                          \
 132     private:                                                                                      \
 133         void init_chain(senf::mpl::rv<BOOST_PP_CAT(name,_index)>*) const {                        \
 134             init_chain(static_cast<senf::mpl::rv<BOOST_PP_CAT(name,_index)-1>*>(0));              \
 135             name().init();                                                                        \
 136         }                                                                                         \
 137     access:
 138 #
 139 # define SENF_PARSER_I_FIELD_INIT_ro(name, type, access)                                          \
 140     private:                                                                                      \
 141         void init_chain(senf::mpl::rv<BOOST_PP_CAT(name,_index)>*) const {                        \
 142             init_chain(static_cast<senf::mpl::rv<BOOST_PP_CAT(name,_index)-1>*>(0));              \
 143         }                                                                                         \
 144     access:
 145 #
 146 # ////////////////////////////////////////
 147 # // SENF_PARSER_I_FIELD_OFS_*
 148 #
 149 # define SENF_PARSER_I_FIELD_OFS_var(name, type, access)                                          \
 150         size_type BOOST_PP_CAT(name,_offset)() const {                                            \
 151             return field_offset_(static_cast<senf::mpl::rv<BOOST_PP_CAT(name,_index)-1>*>(0));    \
 152         }                                                                                         \
 153         static size_type const BOOST_PP_CAT(name, _init_bytes) = SENF_MPL_SLOT_GET(init_bytes);
 154 #
 155 # define SENF_PARSER_I_FIELD_OFS_fix(name, type, access)                                          \
 156         static size_type const BOOST_PP_CAT(name, _offset) = SENF_MPL_SLOT_GET(offset);
 157 #
 158 # ////////////////////////////////////////
 159 # // SENF_PARSER_I_ADVANCE_OFS_*
 160 #
 161 # define SENF_PARSER_I_SIZE_var(name, type) senf::bytes(BOOST_PP_CAT(name, _)())
 162 # define SENF_PARSER_I_INITBYTES_var(name, type) senf::init_bytes<type>::value
 163 #
 164 # define SENF_PARSER_I_SIZE_fix(name, type) type::fixed_bytes
 165 # define SENF_PARSER_I_INITBYTES_fix(name, type) void
 166 #
 167 # define SENF_PARSER_I_ISVAR_fix(name, type) 0
 168 # define SENF_PARSER_I_ISVAR_var(name, type) (senf::is_fixed<type>::value?0:1)
 169 #
 170 # define SENF_PARSER_I_ADVANCE_OFS_var(name, type, size, isize, isvar, access)                    \
 171         size_type BOOST_PP_CAT(name, _next_offset)() const {                                      \
 172             return BOOST_PP_CAT(name,_offset)() + size;                                           \
 173         }                                                                                         \
 174         static size_type const BOOST_PP_CAT(name, _next_init_bytes) =                             \
 175             BOOST_PP_CAT(name, _init_bytes) + isize;                                              \
 176     private:                                                                                      \
 177         size_type field_offset_(senf::mpl::rv<BOOST_PP_CAT(name,_index)>*) const {                \
 178             return BOOST_PP_CAT(name, _next_offset)();                                            \
 179         }                                                                                         \
 180         SENF_MPL_SLOT_SET(init_bytes, BOOST_PP_CAT(name,_next_init_bytes));                       \
 181         static size_type const BOOST_PP_CAT(name, _group) = SENF_MPL_SLOT_GET(group) + isvar;     \
 182         SENF_MPL_SLOT_SET(group, BOOST_PP_CAT(name, _group));                                     \
 183     access:
 184 #
 185 # define SENF_PARSER_I_ADVANCE_OFS_fix(name, type, size, isize, isvar, access)                    \
 186         static size_type const BOOST_PP_CAT(name, _next_offset) =                                 \
 187             BOOST_PP_CAT(name, _offset) + size;                                                   \
 188     private:                                                                                      \
 189         SENF_MPL_SLOT_SET(offset, BOOST_PP_CAT(name, _next_offset));                              \
 190     access:
 191 #
 192 # ////////////////////////////////////////
 193 # // SENF_PARSER_I_FIELD_VAL_*
 194 #
 195 # define SENF_PARSER_I_FIELD_VAL_rw(name, type, access)                                           \
 196     private:                                                                                      \
 197         BOOST_PP_CAT(name, _t) BOOST_PP_CAT(name, _)() const {                                    \
 198             return parse<type>( SENF_PARSER_OFFSET(name) );                                       \
 199         }                                                                                         \
 200     access:                                                                                       \
 201         BOOST_PP_CAT(name, _t) name() const {                                                     \
 202             return BOOST_PP_CAT(name,_)();                                                        \
 203         }
 204 #
 205 # define SENF_PARSER_I_FIELD_VAL_ro(name, type, access)                                           \
 206     private:                                                                                      \
 207         BOOST_PP_CAT(name, _t) BOOST_PP_CAT(name, _)() const {                                    \
 208             return parse<type>( SENF_PARSER_OFFSET(name) );                                       \
 209         }                                                                                         \
 210     access:                                                                                       \
 211         BOOST_PP_CAT(name, _t)::value_type name() const {                                         \
 212             return BOOST_PP_CAT(name,_)();                                                        \
 213         }
 214 #
 215 # ///////////////////////////////////////////////////////////////////////////
 216 # // SENF_PARSER_CUSTOM_FIELD_*
 217 #
 218 # define SENF_PARSER_CUSTOM_FIELD_var(name, type, size, isize)                                    \
 219       SENF_PARSER_CUSTOM_FIELD_I(name, type, size, isize, var)
 220 # define SENF_PARSER_CUSTOM_FIELD_fix(name, type, size)                                           \
 221       SENF_PARSER_CUSTOM_FIELD_I(name, type, size, size, fix)
 222 #
 223 # define SENF_PARSER_CUSTOM_FIELD_I(name, type, size, isize, ofstype)                             \
 224         SENF_PARSER_I_BITFIELD_RESET()                                                            \
 225         SENF_PARSER_I_FIELD_INTRO(name, type, public)                                             \
 226         SENF_PARSER_I_FIELD_INIT_ro(name, type, public)                                           \
 227         BOOST_PP_CAT(SENF_PARSER_I_FIELD_OFS_, ofstype) (name, type, public)                      \
 228         BOOST_PP_CAT(SENF_PARSER_I_ADVANCE_OFS_, ofstype) (name, type, size, isize, 1, public)    \
 229         BOOST_PP_CAT(name, _t) name() const
 230 #
 231 # ///////////////////////////////////////////////////////////////////////////
 232 # // SENF_PARSER_BITFIELD_*
 233 # // SENF_PARSER_P_BITFIELD_*
 234 #
 235 # define SENF_PARSER_BITFIELD_var(name, bits, type)                                               \
 236       SENF_PARSER_BITFIELD_I(name, bits, type, var, rw, public)
 237 # define SENF_PARSER_BITFIELD_RO_var(name, bits, type)                                            \
 238       SENF_PARSER_BITFIELD_I(name, bits, type, var, ro, public)
 239 # define SENF_PARSER_BITFIELD_fix(name, bits, type)                                               \
 240       SENF_PARSER_BITFIELD_I(name, bits, type, fix, rw, public)
 241 # define SENF_PARSER_BITFIELD_RO_fix(name, bits, type)                                            \
 242       SENF_PARSER_BITFIELD_I(name, bits, type, fix, ro, public)
 243 #
 244 # define SENF_PARSER_P_BITFIELD_var(name, bits, type)                                             \
 245       SENF_PARSER_BITFIELD_I(name, bits, type, var, rw, private)
 246 # define SENF_PARSER_P_BITFIELD_fix(name, bits, type)                                             \
 247       SENF_PARSER_BITFIELD_I(name, bits, type, fix, rw, private)
 248 #
 249 # ////////////////////////////////////////
 250 # // SENF_PARSER_BITFIELD_I
 251 #
 252 # define SENF_PARSER_BITFIELD_TYPE_signed(start, bits)   senf::IntFieldParser<start, start+bits>
 253 # define SENF_PARSER_BITFIELD_TYPE_unsigned(start, bits) senf::UIntFieldParser<start, start+bits>
 254 # define SENF_PARSER_BITFIELD_TYPE_bool(start, bits)     senf::FlagParser<start>
 255 #
 256 # define SENF_PARSER_BITFIELD_I(name, bits, type, ofstype, rwtype, access)                        \
 257     access:                                                                                       \
 258         static size_type const BOOST_PP_CAT(name, _bit) = SENF_MPL_SLOT_GET(bit);                 \
 259     private:                                                                                      \
 260         SENF_MPL_SLOT_SET(bit, BOOST_PP_CAT(name, _bit) + bits);                                  \
 261         typedef BOOST_PP_CAT(SENF_PARSER_BITFIELD_TYPE_, type)( BOOST_PP_CAT(name, _bit), bits )  \
 262              BOOST_PP_CAT(name,_bit_t );                                                          \
 263     access:                                                                                       \
 264         SENF_PARSER_BITFIELD_II( name, bits, BOOST_PP_CAT(name, _bit_t), ofstype, rwtype, access) \
 265     public:
 266 #
 267 # define SENF_PARSER_BITFIELD_II(name, bits, type, ofstype, rwtype, access)                       \
 268          SENF_PARSER_I_FIELD_INTRO(name, type, access)                                            \
 269          SENF_PARSER_I_FIELD_INIT_ro(name, type, access)                                          \
 270          BOOST_PP_CAT(SENF_PARSER_I_BITFIELD_OFS_, ofstype) (name, type, access)                  \
 271          BOOST_PP_CAT(SENF_PARSER_I_ADVANCE_OFS_, ofstype) (                                      \
 272              name, type,                                                                          \
 273              BOOST_PP_CAT(name, _t)::fixed_bytes, BOOST_PP_CAT(name, _t)::fixed_bytes,            \
 274              0,                                                                                   \
 275              access)                                                                              \
 276     private:                                                                                      \
 277          SENF_MPL_SLOT_SET(bitfield_size, BOOST_PP_CAT(name, _t)::fixed_bytes);                   \
 278     access:                                                                                       \
 279          BOOST_PP_CAT(SENF_PARSER_I_FIELD_VAL_, rwtype) (name, type, access)                      \
 280     public:
 281 #
 282 # ////////////////////////////////////////
 283 # // SENF_PARSER_I_BITFIELD_OFS_*
 284 #
 285 # define SENF_PARSER_I_BITFIELD_OFS_var(name, type, access)                                       \
 286         size_type BOOST_PP_CAT(name,_offset)() const {                                            \
 287             return field_offset_(static_cast<senf::mpl::rv<BOOST_PP_CAT(name,_index)-1>*>(0))     \
 288                 - SENF_MPL_SLOT_GET(bitfield_size);                                               \
 289         }                                                                                         \
 290         static size_type const BOOST_PP_CAT(name, _init_bytes) = SENF_MPL_SLOT_GET(init_bytes)    \
 291             - SENF_MPL_SLOT_GET(bitfield_size);
 292 #
 293 # define SENF_PARSER_I_BITFIELD_OFS_fix(name, type, access)                                       \
 294         static size_type const BOOST_PP_CAT(name, _offset) = SENF_MPL_SLOT_GET(offset)            \
 295             - SENF_MPL_SLOT_GET(bitfield_size);
 296 #
 297 # ////////////////////////////////////////
 298 # // SENF_PARSER_I_BITFIELD_RESET
 299 #
 300 # define SENF_PARSER_I_BITFIELD_RESET()                                                           \
 301         SENF_MPL_SLOT_SET(bit, 0);                                                                \
 302         SENF_MPL_SLOT_SET(bitfield_size, 0);
 303 #
 304 # ///////////////////////////////////////////////////////////////////////////
 305 # // SENF_PARSER_SKIP_*
 306 #
 307 # define SENF_PARSER_SKIP_var(bytes, ibytes)                                                      \
 308       SENF_PARSER_I_SKIP( BOOST_PP_CAT(senf_anon_, __LINE__), bytes, ibytes, var)
 309 #
 310 # define SENF_PARSER_SKIP_fix(bytes)                                                              \
 311       SENF_PARSER_I_SKIP( BOOST_PP_CAT(senf_anon_, __LINE__), bytes, bytes, fix)
 312 #
 313 # define SENF_PARSER_I_SKIP(name, bytes, ibytes, ofstype)                                         \
 314     private:                                                                                      \
 315           SENF_PARSER_I_BITFIELD_RESET()                                                          \
 316           SENF_PARSER_I_FIELD_INTRO(name, void, private)                                          \
 317           SENF_PARSER_I_FIELD_INIT_ro(name, void, private)                                        \
 318           BOOST_PP_CAT(SENF_PARSER_I_FIELD_OFS_, ofstype) (name, type, access)                    \
 319           BOOST_PP_CAT(SENF_PARSER_I_ADVANCE_OFS_, ofstype) (name, void, bytes, ibytes, 1,        \
 320                                                              private)                             \
 321     public:
 322 #
 323 # ///////////////////////////////////////////////////////////////////////////
 324 # // SENF_PARSER_SKIP_BITS_*
 325 #
 326 # define SENF_PARSER_SKIP_BITS_var(bits) SENF_PARSER_I_SKIP_BITS(bits, var)
 327 # define SENF_PARSER_SKIP_BITS_fix(bits) SENF_PARSER_I_SKIP_BITS(bits, fix)
 328 #
 329 # define SENF_PARSER_I_SKIP_BITS(bits, ofstype)                                                   \
 330       private:                                                                                    \
 331           SENF_MPL_SLOT_SET(bit, SENF_MPL_SLOT_GET(bit) + bits);                                  \
 332       public:
 333 #
 334 # ///////////////////////////////////////////////////////////////////////////
 335 # // SENF_PARSER_GOTO_*
 336 #
 337 # define SENF_PARSER_GOTO_var(name)                                                               \
 338       SENF_PARSER_I_GOTO( BOOST_PP_CAT(senf_anon_, __LINE__),                                     \
 339                           BOOST_PP_CAT(name, _offset)(),                                          \
 340                           BOOST_PP_CAT(name, _init_bytes),                                        \
 341                           var )
 342 #
 343 # define SENF_PARSER_GOTO_fix(name)                                                               \
 344       SENF_PARSER_I_GOTO( BOOST_PP_CAT(senf_anon_, __LINE__),                                     \
 345                           BOOST_PP_CAT(name, _offset),                                            \
 346                           BOOST_PP_CAT(name, _offset),                                            \
 347                           fix )
 348 #
 349 # define SENF_PARSER_GOTO_OFFSET_var(offset, isize)                                               \
 350       SENF_PARSER_I_GOTO( BOOST_PP_CAT(senf_anon_, __LINE__), offset, isize, var )
 351 #
 352 # define SENF_PARSER_GOTO_OFFSET_fix(offset)                                                      \
 353       SENF_PARSER_I_GOTO( BOOST_PP_CAT(senf_anon_, __LINE__), offset, offset, fix )
 354 #
 355 # define SENF_PARSER_I_GOTO(name, offset, initsize, ofstype)                                      \
 356       private:                                                                                    \
 357           SENF_PARSER_I_BITFIELD_RESET()                                                          \
 358           SENF_PARSER_I_FIELD_INTRO(name, void, private)                                          \
 359           SENF_PARSER_I_FIELD_INIT_ro(name, void, private)                                        \
 360           BOOST_PP_CAT( SENF_PARSER_I_GOTO_SET_OFS_, ofstype ) (name, offset, initsize)           \
 361       public:
 362 #
 363 # define SENF_PARSER_I_GOTO_SET_OFS_var(name, offs, initsize)                                     \
 364           size_type field_offset_(senf::mpl::rv<BOOST_PP_CAT(name,_index)>*) const {              \
 365               return offs;                                                                        \
 366           }                                                                                       \
 367           SENF_MPL_SLOT_SET(init_bytes, initsize);
 368 #
 369 # define SENF_PARSER_I_GOTO_SET_OFS_fix(name, offs, initsize)                                     \
 370           SENF_MPL_SLOT_SET(offset, offs);
 371 #
 372 # ///////////////////////////////////////////////////////////////////////////
 373 # // SENF_PARSER_LABEL_*
 374 #
 375 # define SENF_PARSER_LABEL_var(name) SENF_PARSER_I_LABEL( name, var, public )
 376 # define SENF_PARSER_LABEL_fix(name) SENF_PARSER_I_LABEL( name, fix, public )
 377 #
 378 # define SENF_PARSER_I_LABEL(name, ofstype, access)                                               \
 379       access:                                                                                     \
 380           SENF_PARSER_I_BITFIELD_RESET()                                                          \
 381           SENF_PARSER_I_FIELD_INTRO(name, void, access)                                           \
 382           SENF_PARSER_I_FIELD_INIT_ro(name, void, access)                                         \
 383           BOOST_PP_CAT(SENF_PARSER_I_FIELD_OFS_, ofstype) (name, type, access)                    \
 384           BOOST_PP_CAT(SENF_PARSER_I_ADVANCE_OFS_, ofstype) (name, void, 0, 0, 0, access)         \
 385       public:
 386 #
 387 # ///////////////////////////////////////////////////////////////////////////
 388 # // SENF_PARSER_OFFSET_*
 389 #
 390 # define SENF_PARSER_OFFSET_fix(name) BOOST_PP_CAT(name, _offset)
 391 # define SENF_PARSER_OFFSET_var(name) BOOST_PP_CAT(name, _offset)()
 392 #
 393 # ///////////////////////////////////////////////////////////////////////////
 394 # // SENF_PARSER_FIXED_OFFSET_*
 395 #
 396 # define SENF_PARSER_FIXED_OFFSET_fix(name) BOOST_PP_CAT(name, _offset)
 397 # define SENF_PARSER_FIXED_OFFSET_var(name) BOOST_PP_CAT(name, _init_bytes)
 398 #
 399 # ///////////////////////////////////////////////////////////////////////////
 400 # // SENF_PARSER_CURRENT_FIXED_OFFSET_*
 401 #
 402 # define SENF_PARSER_CURRENT_FIXED_OFFSET_fix() SENF_MPL_SLOT_GET(offset)
 403 # define SENF_PARSER_CURRENT_FIXED_OFFSET_var() SENF_MPL_SLOT_GET(init_bytes)
 404 #
 405 # ///////////////////////////////////////////////////////////////////////////
 406 # // SENF_PARSER_FINALIZE_*
 407 #
 408 # define SENF_PARSER_FINALIZE_var(name)                                                           \
 409     SENF_PARSER_FINALIZE_GENERIC(name)                                                            \
 410     size_type bytes() const {                                                                     \
 411         return field_offset_(static_cast<senf::mpl::rv<SENF_MPL_SLOT_GET(index)>*>(0));           \
 412     }                                                                                             \
 413     static size_type const init_bytes = SENF_MPL_SLOT_GET(init_bytes)
 414 #
 415 # define SENF_PARSER_FINALIZE_fix(name)                                                           \
 416     SENF_PARSER_FINALIZE_GENERIC(name)                                                            \
 417     static size_type const fixed_bytes = SENF_MPL_SLOT_GET(offset);
 418 #
 419 # define SENF_PARSER_FINALIZE_GENERIC(name)                                                       \
 420          void defaultInit() const {                                                               \
 421              init_chain(static_cast<senf::mpl::rv<SENF_MPL_SLOT_GET(index)>*>(0));                \
 422          }                                                                                        \
 423          name(data_iterator i, state_type s) : parser_base_type(i,s) {}                           \
 424     private:                                                                                      \
 425          template <class T> void init(T) const { defaultInit(); }                                 \
 426     public:                                                                                       \
 427          void init() const { init(0); }
 428 #
 429 # ///////////////////////////////////////////////////////////////////////////
 430 # // SENF_PARSER_REQUIRE_VAR
 431 #
 432 # define SENF_PARSER_REQUIRE_VAR(description) \
 433       BOOST_PP_CAT(SENF_PARSER_REQUIRE_VAR_, SENF_PARSER_TYPE)(description)
 434 #
 435 # define SENF_PARSER_REQUIRE_VAR_var(description)
 436 #
 437 # define SENF_PARSER_REQUIRE_VAR_fix(description)                                                 \
 438       typedef BOOST_PP_CAT( PARSER_ERROR__,                                                       \
 439                             BOOST_PP_CAT(description, _not_allowed_in_fixed_parser) )             \
 440           BOOST_PP_CAT(errsym_, __LINE__);
 441 #
 442 # ///////////////////////////////////////////////////////////////////////////
 443 # // SENF_PARSER_COLLECTION_I
 444 #
 445 # ifndef DOXYGEN
 446 #
 447   namespace senf { namespace detail { namespace auxtag {
 448       struct none {}; } } }
 449   namespace senf { namespace detail { namespace auxtag {
 450       struct bytes {}; } } }
 451   namespace senf { namespace detail { namespace auxtag {
 452       template <class Transform, class Tag>
 453       struct transform {}; } } }
 454 #
 455 # endif
 456 #
 457 # define SENF_PARSER_COLLECTION_TAG_GOBBLE__bytes(x)
 458 # define SENF_PARSER_COLLECTION_TAG__bytes(x) bytes()
 459 # define SENF_PARSER_COLLECTION_TAG_EXPAND__bytes() senf::detail::auxtag::bytes
 460 # define SENF_PARSER_COLLECTION_TAG_GETAUX__bytes(x) x
 461 #
 462 # // No recursive call so we need some more of theese ... ARGH !!!
 463 # define SENF_CAT_RECURS1(a, b) SENF_CAT_RECURS1_I(a,b)
 464 # define SENF_CAT_RECURS1_I(a, b) a ## b
 465 # define SENF_CAT_RECURS2(a, b) SENF_CAT_RECURS2_I(a,b)
 466 # define SENF_CAT_RECURS2_I(a, b) a ## b
 467 # define SENF_CAT_RECURS3(a, b) SENF_CAT_RECURS3_I(a,b)
 468 # define SENF_CAT_RECURS3_I(a, b) a ## b
 469 #
 470 # define SENF_PARSER_COLLECTION_TAG_GOBBLE__transform(x,y)
 471 # define SENF_PARSER_COLLECTION_TAG__transform(x,y) \
 472       transform(x, SENF_PARSER_COLLECTION_TAG_RECURS1(y))
 473 # define SENF_PARSER_COLLECTION_TAG_EXPAND__transform(x,y)                                        \
 474       senf::detail::auxtag::transform<                                                            \
 475           x,                                                                                      \
 476           SENF_CAT_RECURS1(SENF_PARSER_COLLECTION_TAG_EXPAND__, y)>
 477 # define SENF_PARSER_COLLECTION_TAG_GETAUX__transform(x,y) \
 478       SENF_PARSER_COLLECTION_TAG_GETAUX_RECURS1(y)
 479 #
 480 # define SENF_PARSER_COLLECTION_TAG_EXPAND__none() senf::detail::auxtag::none
 481 #
 482 # define SENF_PARSER_COLLECTION_TAG_RECURS1(aux)                                                  \
 483       BOOST_PP_IF(                                                                                \
 484           SENF_PARSER_COLLECTION_HAS_KEYWORD(aux),                                                \
 485           BOOST_PP_CAT(SENF_PARSER_COLLECTION_TAG__, aux),                                        \
 486           none() )
 487 #
 488 # define SENF_PARSER_COLLECTION_TAG_GETAUX_RECURS1(aux)                                           \
 489       BOOST_PP_IF(                                                                                \
 490           SENF_PARSER_COLLECTION_HAS_KEYWORD(aux),                                                \
 491           BOOST_PP_CAT(SENF_PARSER_COLLECTION_TAG_GETAUX__, aux),                                 \
 492           aux)
 493 #
 494 # define SENF_PARSER_COLLECTION_HAS_KEYWORD(x)                                                    \
 495       BOOST_PP_IS_EMPTY( SENF_CAT_RECURS1(SENF_PARSER_COLLECTION_TAG_GOBBLE__, x) )
 496 #
 497 # define SENF_PARSER_COLLECTION_GETAUX(aux)                                                       \
 498       BOOST_PP_IF( SENF_PARSER_COLLECTION_HAS_KEYWORD(aux),                                       \
 499                    SENF_CAT_RECURS2(SENF_PARSER_COLLECTION_TAG_GETAUX__, aux),                    \
 500                    aux )
 501
 502 # define SENF_PARSER_COLLECTION_I(access, name, aux, traits)                                      \
 503       BOOST_PP_EXPAND(                                                                            \
 504           SENF_PARSER_COLLECTION_II                                                               \
 505               BOOST_PP_IF(                                                                        \
 506                   SENF_PARSER_COLLECTION_HAS_KEYWORD(aux),                                        \
 507                   ( access,                                                                       \
 508                     name,                                                                         \
 509                     SENF_CAT_RECURS2(SENF_PARSER_COLLECTION_TAG_GETAUX__, aux),                   \
 510                     SENF_CAT_RECURS2(SENF_PARSER_COLLECTION_TAG__, aux),                          \
 511                     traits ),                                                                     \
 512                   ( access,                                                                       \
 513                     name,                                                                         \
 514                     aux,                                                                          \
 515                     none(),                                                                       \
 516                     traits ) ))
 517 #
 518 # define SENF_PARSER_COLLECTION_II(access, name, aux, tag, traits)                                \
 519       private:                                                                                    \
 520           BOOST_PP_CAT(SENF_PARSER_COLLECTION_AUXTYPE_, SENF_PARSER_TYPE)(name, aux)              \
 521           typedef BOOST_PP_CAT(SENF_PARSER_COLLECTION_AUX_I_, SENF_PARSER_TYPE)(name, aux)        \
 522               BOOST_PP_CAT(name,_aux_policy);                                                     \
 523           typedef traits::parser<                                                                 \
 524               BOOST_PP_CAT(name,_aux_policy),                                                     \
 525               BOOST_PP_CAT(SENF_PARSER_COLLECTION_TAG_EXPAND__, tag)                              \
 526               >::type BOOST_PP_CAT(name, _collection_t);                                          \
 527       access:                                                                                     \
 528           SENF_PARSER_FIELD_SETUP_I( name,                                                        \
 529                                      BOOST_PP_CAT(name, _collection_t),                           \
 530                                      SENF_PARSER_TYPE,                                            \
 531                                      rw,                                                          \
 532                                      access )                                                     \
 533           BOOST_PP_CAT(SENF_PARSER_COLLECTION_VAL_, SENF_PARSER_TYPE)(name, aux, access)          \
 534       public:
 535 #
 536 # define SENF_PARSER_COLLECTION_AUXTYPE_var(name, aux)                                            \
 537       static bool const BOOST_PP_CAT(name, _aux_fixed) =                                          \
 538           (SENF_MPL_SLOT_GET(group) - BOOST_PP_CAT(aux, _group) == 0);
 539 #
 540 # define SENF_PARSER_COLLECTION_AUXTYPE_fix(name, aux)
 541 #
 542 # ifndef DOXYGEN
 543 #
 544   namespace senf { namespace detail {
 545       template <class Parser> struct DynamicAuxParserPolicy;
 546       template <class Parser, unsigned offset> struct FixedAuxParserPolicy;
 547       template <class Parser, unsigned fixedOffset, bool fixedDelta>
 548       struct ParserAuxPolicySelect
 549       { typedef senf::detail::DynamicAuxParserPolicy<Parser> type; };
 550       template <class Parser, unsigned fixedOffset>
 551       struct ParserAuxPolicySelect<Parser, fixedOffset, true>
 552       { typedef senf::detail::FixedAuxParserPolicy<Parser, fixedOffset> type; };
 553   }};
 554 #
 555 # endif
 556 #
 557 # define SENF_PARSER_COLLECTION_AUX_I_var(name, aux)                                              \
 558       senf::detail::ParserAuxPolicySelect< BOOST_PP_CAT(aux, _t),                                 \
 559                                            SENF_PARSER_CURRENT_FIXED_OFFSET()                     \
 560                                                - SENF_PARSER_FIXED_OFFSET(aux),                   \
 561                                            BOOST_PP_CAT(name, _aux_fixed) >::type
 562 #
 563 # define SENF_PARSER_COLLECTION_AUX_I_fix(name, aux)                                              \
 564       senf::detail::FixedAuxParserPolicy< BOOST_PP_CAT(aux, _t),                                  \
 565                                           SENF_PARSER_CURRENT_FIXED_OFFSET()                      \
 566                                               - SENF_PARSER_FIXED_OFFSET(aux) >
 567 #
 568 # define SENF_PARSER_COLLECTION_VAL_var(name,aux,access)                                          \
 569       private:                                                                                    \
 570           template <class T> T BOOST_PP_CAT(name, _dispatch)(boost::true_type) const              \
 571           { return parse<T>( SENF_PARSER_OFFSET(name) ); }                                        \
 572           template <class T> T BOOST_PP_CAT(name, _dispatch)(boost::false_type) const             \
 573           { return parse<T>( aux(), SENF_PARSER_OFFSET(name) ); }                                 \
 574           BOOST_PP_CAT(name, _t) BOOST_PP_CAT(name, _)() const                                    \
 575           { return BOOST_PP_CAT(name, _dispatch) <BOOST_PP_CAT(name, _t)>(                        \
 576                   boost::integral_constant<bool, BOOST_PP_CAT(name, _aux_fixed)>()); }            \
 577       access:                                                                                     \
 578           BOOST_PP_CAT(name, _t) name() const                                                     \
 579           { return BOOST_PP_CAT(name, _)(); }
 580 #
 581 # define SENF_PARSER_COLLECTION_VAL_fix(name,aux,access)                                          \
 582       private:                                                                                    \
 583           BOOST_PP_CAT(name, _t) BOOST_PP_CAT(name, _)() const                                    \
 584           { return parse<BOOST_PP_CAT(name, _t)>( SENF_PARSER_OFFSET(name) ); }                   \
 585       access:                                                                                     \
 586           BOOST_PP_CAT(name, _t) name() const                                                     \
 587           { return BOOST_PP_CAT(name, _)(); }
 588 #
 589 # ////////////////////////////////ih.e///////////////////////////////////////
 590 # endif
 591 #
 592 #
 593 # // Local Variables:
 594 # // mode: c++
 595 # // fill-column: 100
 596 # // c-file-style: "senf"
 597 # // indent-tabs-mode: nil
 598 # // ispell-local-dictionary: "american"
 599 # // compile-command: "scons -u test"
 600 # // End: