1 /* Definitions for CPP library.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Written by Per Bothner, 1994-95.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
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.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding! */
26 #include <sys/types.h>
27 #include "hashtable.h"
33 /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
34 #ifndef GCC_C_PRAGMA_H
35 typedef struct cpp_reader cpp_reader;
37 typedef struct cpp_buffer cpp_buffer;
38 typedef struct cpp_options cpp_options;
39 typedef struct cpp_token cpp_token;
40 typedef struct cpp_string cpp_string;
41 typedef struct cpp_hashnode cpp_hashnode;
42 typedef struct cpp_macro cpp_macro;
43 typedef struct cpp_lexer_pos cpp_lexer_pos;
44 typedef struct cpp_lookahead cpp_lookahead;
45 typedef struct cpp_callbacks cpp_callbacks;
48 struct file_name_map_list;
51 /* The first two groups, apart from '=', can appear in preprocessor
52 expressions. This allows a lookup table to be implemented in
55 The first group, to CPP_LAST_EQ, can be immediately followed by an
56 '='. The lexer needs operators ending in '=', like ">>=", to be in
57 the same order as their counterparts without the '=', like ">>". */
59 /* Positions in the table. */
60 #define CPP_LAST_EQ CPP_MAX
61 #define CPP_FIRST_DIGRAPH CPP_HASH
62 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
67 OP(CPP_GREATER, ">") /* compare */ \
69 OP(CPP_PLUS, "+") /* math */ \
74 OP(CPP_AND, "&") /* bit ops */ \
77 OP(CPP_RSHIFT, ">>") \
78 OP(CPP_LSHIFT, "<<") \
79 OP(CPP_MIN, "<?") /* extension */ \
83 OP(CPP_AND_AND, "&&") /* logical */ \
87 OP(CPP_COMMA, ",") /* grouping */ \
88 OP(CPP_OPEN_PAREN, "(") \
89 OP(CPP_CLOSE_PAREN, ")") \
90 OP(CPP_EQ_EQ, "==") /* compare */ \
91 OP(CPP_NOT_EQ, "!=") \
92 OP(CPP_GREATER_EQ, ">=") \
93 OP(CPP_LESS_EQ, "<=") \
95 OP(CPP_PLUS_EQ, "+=") /* math */ \
96 OP(CPP_MINUS_EQ, "-=") \
97 OP(CPP_MULT_EQ, "*=") \
98 OP(CPP_DIV_EQ, "/=") \
99 OP(CPP_MOD_EQ, "%=") \
100 OP(CPP_AND_EQ, "&=") /* bit ops */ \
101 OP(CPP_OR_EQ, "|=") \
102 OP(CPP_XOR_EQ, "^=") \
103 OP(CPP_RSHIFT_EQ, ">>=") \
104 OP(CPP_LSHIFT_EQ, "<<=") \
105 OP(CPP_MIN_EQ, "<?=") /* extension */ \
106 OP(CPP_MAX_EQ, ">?=") \
107 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
108 OP(CPP_HASH, "#") /* digraphs */ \
109 OP(CPP_PASTE, "##") \
110 OP(CPP_OPEN_SQUARE, "[") \
111 OP(CPP_CLOSE_SQUARE, "]") \
112 OP(CPP_OPEN_BRACE, "{") \
113 OP(CPP_CLOSE_BRACE, "}") \
114 /* The remainder of the punctuation. Order is not significant. */ \
115 OP(CPP_SEMICOLON, ";") /* structure */ \
116 OP(CPP_ELLIPSIS, "...") \
117 OP(CPP_PLUS_PLUS, "++") /* increment */ \
118 OP(CPP_MINUS_MINUS, "--") \
119 OP(CPP_DEREF, "->") /* accessors */ \
121 OP(CPP_SCOPE, "::") \
122 OP(CPP_DEREF_STAR, "->*") \
123 OP(CPP_DOT_STAR, ".*") \
124 OP(CPP_ATSIGN, "@") /* used in Objective C */ \
126 TK(CPP_NAME, SPELL_IDENT) /* word */ \
127 TK(CPP_INT, SPELL_STRING) /* 23 */ \
128 TK(CPP_FLOAT, SPELL_STRING) /* 3.14159 */ \
129 TK(CPP_NUMBER, SPELL_STRING) /* 34_be+ta */ \
131 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
132 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
133 TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
135 TK(CPP_STRING, SPELL_STRING) /* "string" */ \
136 TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
137 TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
139 TK(CPP_COMMENT, SPELL_STRING) /* Only if output comments. */ \
140 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
141 OP(CPP_EOF, "EOL") /* End of line or file. */ \
143 /* SDCC _asm specific */ \
144 TK(CPP_ASM, SPELL_STRING) /* _asm ... _endasm ; */
156 /* C language kind, used when calling cpp_reader_init. */
157 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
158 CLK_GNUCXX, CLK_CXX98, CLK_OBJC, CLK_OBJCXX, CLK_ASM};
160 /* Payload of a NUMBER, FLOAT, STRING, or COMMENT token. */
164 const unsigned char *text;
167 /* Flags for the cpp_token structure. */
168 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
169 #define DIGRAPH (1 << 1) /* If it was a digraph. */
170 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
171 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
172 #define NAMED_OP (1 << 4) /* C++ named operators. */
173 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
174 #define AVOID_LPASTE (1 << 6) /* Check left for accidental pastes. */
176 /* A preprocessing token. This has been carefully packed and should
177 occupy 12 bytes on 32-bit hosts and 16 bytes on 64-bit hosts. */
180 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
181 unsigned char flags; /* flags - see above */
185 cpp_hashnode *node; /* An identifier. */
186 struct cpp_string str; /* A string, or number. */
187 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
188 unsigned char c; /* Character represented by CPP_OTHER. */
192 /* The position of a token in the current file. */
196 unsigned int output_line;
200 typedef struct cpp_token_with_pos cpp_token_with_pos;
201 struct cpp_token_with_pos
207 /* Token lookahead. */
210 struct cpp_lookahead *next;
211 cpp_token_with_pos *tokens;
213 unsigned int cur, count, cap;
216 /* A standalone character. We may want to make it unsigned for the
217 same reason we use unsigned char - to avoid signedness issues. */
218 typedef int cppchar_t;
220 /* Values for opts.dump_macros.
221 dump_only means inhibit output of the preprocessed text
222 and instead output the definitions of all user-defined
223 macros in a form suitable for use as input to cpp.
224 dump_names means pass #define and the macro name through to output.
225 dump_definitions means pass the whole definition (plus #define) through
227 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
229 /* This structure is nested inside struct cpp_reader, and
230 carries all the options visible to the command line. */
233 /* Name of input and output files. */
234 const char *in_fname;
235 const char *out_fname;
237 /* Characters between tab stops. */
238 unsigned int tabstop;
240 /* Pending options - -D, -U, -A, -I, -ixxx. */
241 struct cpp_pending *pending;
243 /* File name which deps are being written to. This is 0 if deps are
244 being written to stdout. */
245 const char *deps_file;
247 /* Search paths for include files. */
248 struct search_path *quote_include; /* "" */
249 struct search_path *bracket_include; /* <> */
251 /* Map between header names and file names, used only on DOS where
252 file names are limited in length. */
253 struct file_name_map_list *map_list;
255 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
256 in the standard include file directories. */
257 const char *include_prefix;
258 unsigned int include_prefix_len;
260 /* -fleading_underscore sets this to "_". */
261 const char *user_label_prefix;
263 /* The language we're preprocessing. */
266 /* Non-0 means -v, so print the full set of include dirs. */
267 unsigned char verbose;
269 /* Nonzero means use extra default include directories for C++. */
270 unsigned char cplusplus;
272 /* Nonzero means handle cplusplus style comments */
273 unsigned char cplusplus_comments;
275 /* Nonzero means handle #import, for objective C. */
278 /* Nonzero means don't copy comments into the output file. */
279 unsigned char discard_comments;
281 /* Nonzero means process the ISO trigraph sequences. */
282 unsigned char trigraphs;
284 /* Nonzero means process the ISO digraph sequences. */
285 unsigned char digraphs;
287 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
288 unsigned char extended_numbers;
290 /* Nonzero means print the names of included files rather than the
291 preprocessed output. 1 means just the #include "...", 2 means
292 #include <...> as well. */
293 unsigned char print_deps;
295 /* Nonzero if phony targets are created for each header. */
296 unsigned char deps_phony_targets;
298 /* Nonzero if missing .h files in -M output are assumed to be
299 generated files and not errors. */
300 unsigned char print_deps_missing_files;
302 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
303 unsigned char print_deps_append;
305 /* Nonzero means print names of header files (-H). */
306 unsigned char print_include_names;
308 /* Nonzero means cpp_pedwarn causes a hard error. */
309 unsigned char pedantic_errors;
311 /* Nonzero means don't print warning messages. */
312 unsigned char inhibit_warnings;
314 /* Nonzero means don't suppress warnings from system headers. */
315 unsigned char warn_system_headers;
317 /* Nonzero means don't print error messages. Has no option to
318 select it, but can be set by a user of cpplib (e.g. fix-header). */
319 unsigned char inhibit_errors;
321 /* Nonzero means warn if slash-star appears in a comment. */
322 unsigned char warn_comments;
324 /* Nonzero means warn if there are any trigraphs. */
325 unsigned char warn_trigraphs;
327 /* Nonzero means warn if #import is used. */
328 unsigned char warn_import;
330 /* Nonzero means warn about various incompatibilities with
332 unsigned char warn_traditional;
334 /* Nonzero means turn warnings into errors. */
335 unsigned char warnings_are_errors;
337 /* Nonzero causes output not to be done, but directives such as
338 #define that have side effects are still obeyed. */
339 unsigned char no_output;
341 /* Nonzero means we should look for header.gcc files that remap file
345 /* Nonzero means don't output line number information. */
346 unsigned char no_line_commands;
348 /* Nonzero means -I- has been seen, so don't look for #include "foo"
349 the source-file directory. */
350 unsigned char ignore_srcdir;
352 /* Zero means dollar signs are punctuation. */
353 unsigned char dollars_in_ident;
355 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
356 unsigned char warn_undef;
358 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
361 /* Nonzero means give all the error messages the ANSI standard requires. */
362 unsigned char pedantic;
364 /* Nonzero means we're looking at already preprocessed code, so don't
365 bother trying to do macro expansion and whatnot. */
366 unsigned char preprocessed;
368 /* Nonzero disables all the standard directories for headers. */
369 unsigned char no_standard_includes;
371 /* Nonzero disables the C++-specific standard directories for headers. */
372 unsigned char no_standard_cplusplus_includes;
374 /* Nonzero means dump macros in some fashion - see above. */
375 unsigned char dump_macros;
377 /* Nonzero means pass #include lines through to the output. */
378 unsigned char dump_includes;
380 /* Print column number in error messages. */
381 unsigned char show_column;
383 /* Treat C++ alternate operator names special. */
384 unsigned char operator_names;
386 /* True if --help, --version or --target-help appeared in the
387 options. Stand-alone CPP should then bail out after option
388 parsing; drivers might want to continue printing help. */
389 unsigned char help_only;
391 /* SDCC abuse by Kevin: allow naked '#' characters in expanded macros
392 * (see _cpp_create_definition in cppmacro.c)
394 unsigned char allow_naked_hash;
397 /* This structure is passed to the call back when changing file. */
398 enum cpp_fc_reason {FC_ENTER = 0, FC_LEAVE, FC_RENAME};
402 const char *filename;
406 typedef struct cpp_file_change cpp_file_change;
407 struct cpp_file_change
409 struct cpp_file_loc from; /* Line of #include or #line. */
410 struct cpp_file_loc to; /* Line after #include or #line, or start. */
411 enum cpp_fc_reason reason; /* Reason for change. */
412 unsigned char sysp; /* Nonzero if system header. */
413 unsigned char externc; /* Nonzero if wrapper needed. */
419 void (*file_change) PARAMS ((cpp_reader *, const cpp_file_change *));
420 void (*include) PARAMS ((cpp_reader *, const unsigned char *,
422 void (*define) PARAMS ((cpp_reader *, cpp_hashnode *));
423 void (*undef) PARAMS ((cpp_reader *, cpp_hashnode *));
424 void (*poison) PARAMS ((cpp_reader *));
425 void (*ident) PARAMS ((cpp_reader *, const cpp_string *));
426 void (*def_pragma) PARAMS ((cpp_reader *));
429 #define CPP_FATAL_LIMIT 1000
430 /* True if we have seen a "fatal" error. */
431 #define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
433 /* Name under which this program was invoked. */
434 extern const char *progname;
436 /* Where does this buffer come from? A faked include, a source file,
437 a builtin macro, a command-line option, or a _Pragma operator. */
438 enum cpp_buffer_type {BUF_FAKE, BUF_FILE, BUF_BUILTIN,
439 BUF_CL_OPTION, BUF_PRAGMA};
441 /* The structure of a node in the hash table. The hash table has
442 entries for all identifiers: either macros defined by #define
443 commands (type NT_MACRO), assertions created with #assert
444 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
445 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
446 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
447 identifier that behaves like an operator such as "xor".
448 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
449 diagnostic may be required for this node. Currently this only
450 applies to __VA_ARGS__ and poisoned identifiers. */
452 /* Hash node flags. */
453 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
454 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
455 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
456 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
457 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
459 /* Different flavors of hash node. */
462 NT_VOID = 0, /* No definition yet. */
463 NT_MACRO, /* A macro of some form. */
464 NT_ASSERTION /* Predicate for #assert. */
467 /* Different flavors of builtin macro. */
470 BT_SPECLINE = 0, /* `__LINE__' */
471 BT_DATE, /* `__DATE__' */
472 BT_FILE, /* `__FILE__' */
473 BT_BASE_FILE, /* `__BASE_FILE__' */
474 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
475 BT_TIME, /* `__TIME__' */
476 BT_STDC /* `__STDC__' */
479 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
480 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
481 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
482 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
484 /* The common part of an identifier node shared amongst all 3 C front
485 ends. Also used to store CPP identifiers, which are a superset of
486 identifiers in the grammatical sense. */
489 struct ht_identifier ident;
490 unsigned short arg_index; /* Macro argument index. */
491 unsigned char directive_index; /* Index into directive table. */
492 unsigned char rid_code; /* Rid code - for front ends. */
493 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
494 unsigned char flags; /* CPP flags. */
498 cpp_macro *macro; /* If a macro. */
499 struct answer *answers; /* Answers to an assertion. */
500 enum cpp_ttype operator; /* Code for a named operator. */
501 enum builtin_type builtin; /* Code for a builtin macro. */
505 /* Call this first to get a handle to pass to other functions. If you
506 want cpplib to manage its own hashtable, pass in a NULL pointer.
507 Or you can pass in an initialised hash table that cpplib will use;
508 this technique is used by the C front ends. */
509 extern cpp_reader *cpp_create_reader PARAMS ((struct ht *,
512 /* Call this to release the handle. Any use of the handle after this
513 function returns is invalid. Returns cpp_errors (pfile). */
514 extern int cpp_destroy PARAMS ((cpp_reader *));
516 /* Call these to get pointers to the options and callback structures
517 for a given reader. These pointers are good until you call
518 cpp_finish on that reader. You can either edit the callbacks
519 through the pointer returned from cpp_get_callbacks, or set them
520 with cpp_set_callbacks. */
521 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
522 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
523 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
525 /* Now call cpp_handle_option[s] to handle 1[or more] switches. The
526 return value is the number of arguments used. If
527 cpp_handle_options returns without using all arguments, it couldn't
528 understand the next switch. When there are no switches left, you
529 must call cpp_post_options before calling cpp_start_read. Only
530 after cpp_post_options are the contents of the cpp_options
531 structure reliable. */
532 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
533 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
534 extern void cpp_post_options PARAMS ((cpp_reader *));
537 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
539 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
540 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
542 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
544 extern void cpp_register_pragma PARAMS ((cpp_reader *,
545 const char *, const char *,
546 void (*) PARAMS ((cpp_reader *))));
547 extern void cpp_register_pragma_space PARAMS ((cpp_reader *, const char *));
549 extern int cpp_start_read PARAMS ((cpp_reader *, const char *));
550 extern void cpp_finish PARAMS ((cpp_reader *));
551 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
553 extern enum cpp_ttype cpp_can_paste PARAMS ((cpp_reader *, const cpp_token *,
554 const cpp_token *, int *));
555 extern void cpp_get_token PARAMS ((cpp_reader *, cpp_token *));
556 extern const cpp_lexer_pos *cpp_get_line PARAMS ((cpp_reader *));
557 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
558 const cpp_hashnode *));
560 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
562 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
563 int, int, unsigned int *));
565 extern void cpp_define PARAMS ((cpp_reader *, const char *));
566 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
567 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
568 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
570 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
571 const unsigned char *, size_t,
572 enum cpp_buffer_type,
574 extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
575 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
577 /* N.B. The error-message-printer prototypes have not been nicely
578 formatted because exgettext needs to see 'msgid' on the same line
579 as the name of the function in order to work properly. Only the
580 string argument gets a name in an effort to keep the lines from
581 getting ridiculously oversized. */
583 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
585 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
587 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
589 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
591 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
593 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
595 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
597 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
599 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
601 extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
603 extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
604 extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
607 extern int cpp_ideq PARAMS ((const cpp_token *,
609 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
610 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
611 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
612 extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *,
613 const unsigned char **,
614 const unsigned char *,
615 unsigned HOST_WIDE_INT, int));
619 /* Lookup an identifier in the hashtable. Puts the identifier in the
620 table if it is not already there. */
621 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
622 const unsigned char *,
625 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
626 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
630 extern void cpp_scan_buffer_nooutput PARAMS ((cpp_reader *, int));
631 extern void cpp_start_lookahead PARAMS ((cpp_reader *));
632 extern void cpp_stop_lookahead PARAMS ((cpp_reader *, int));
633 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
636 extern int cpp_included PARAMS ((cpp_reader *, const char *));
637 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
643 #endif /* ! GCC_CPPLIB_H */