1 /* Part of CPP library.
2 Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* This header defines all the internal data structures and functions
19 that need to be visible across files. It's called cpphash.h for
20 historical reasons. */
22 #ifndef __GCC_CPPHASH__
23 #define __GCC_CPPHASH__
25 /* Test if a sign is valid within a preprocessing number. */
26 #define VALID_SIGN(c, prevc) \
27 (((c) == '+' || (c) == '-') && \
28 ((prevc) == 'e' || (prevc) == 'E' \
29 || (((prevc) == 'p' || (prevc) == 'P') && !CPP_OPTION (pfile, c89))))
32 #define ALIGN(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
33 #define POOL_FRONT(p) ((p)->cur->front)
34 #define POOL_LIMIT(p) ((p)->cur->limit)
35 #define POOL_BASE(p) ((p)->cur->base)
36 #define POOL_SIZE(p) ((p)->cur->limit - (p)->cur->base)
37 #define POOL_ROOM(p) ((p)->cur->limit - (p)->cur->front)
38 #define POOL_USED(p) ((p)->cur->front - (p)->cur->base)
39 #define POOL_COMMIT(p, len) do {((p)->cur->front += ALIGN (len, (p)->align));\
40 if ((p)->cur->front > (p)->cur->limit) abort ();} while (0)
42 typedef struct cpp_chunk cpp_chunk
;
51 /* List of directories to look for include files in. */
54 struct file_name_list
*next
;
55 struct file_name_list
*alloc
; /* for the cache of
56 current directory entries */
59 /* We use these to tell if the directory mentioned here is a duplicate
60 of an earlier directory on the search path. */
63 /* If the following is nonzero, it is a C-language system include
66 /* Mapping of file names for this directory.
67 Only used on MS-DOS and related platforms. */
68 struct file_name_map
*name_map
;
70 #define ABSOLUTE_PATH ((struct file_name_list *)-1)
72 /* This structure is used for the table of all includes. */
75 const char *name
; /* actual path name of file */
76 const cpp_hashnode
*cmacro
; /* macro, if any, preventing reinclusion. */
77 const struct file_name_list
*foundhere
;
78 /* location in search path where file was
79 found, for #include_next */
80 const unsigned char *buffer
; /* pointer to cached file contents */
81 struct stat st
; /* copy of stat(2) data for file */
82 int fd
; /* fd open on file (short term storage only) */
83 unsigned short include_count
; /* number of times file has been read */
84 unsigned short refcnt
; /* number of stacked buffers using this file */
85 unsigned char sysp
; /* file is a system header */
86 unsigned char mapped
; /* file buffer is mmapped */
87 unsigned char defined
; /* cmacro prevents inclusion in this state */
90 /* The cmacro works like this: If it's NULL, the file is to be
91 included again. If it's NEVER_REREAD, the file is never to be
92 included again. Otherwise it is a macro hashnode, and the file is
93 to be included again if the macro is defined or not as specified by
95 #define NEVER_REREAD ((const cpp_hashnode *)-1)
96 #define DO_NOT_REREAD(inc) \
97 ((inc)->cmacro && ((inc)->cmacro == NEVER_REREAD \
98 || ((inc)->cmacro->type == NT_MACRO) == (inc)->defined))
100 /* Character classes.
101 If the definition of `numchar' looks odd to you, please look up the
102 definition of a pp-number in the C standard [section 6.4.8 of C99].
104 In the unlikely event that characters other than \r and \n enter
105 the set is_vspace, the macro handle_newline() in cpplex.c must be
107 #define ISidnum 0x01 /* a-zA-Z0-9_ */
108 #define ISidstart 0x02 /* _a-zA-Z */
109 #define ISnumstart 0x04 /* 0-9 */
110 #define IShspace 0x08 /* ' ' \t */
111 #define ISvspace 0x10 /* \r \n */
112 #define ISspace 0x20 /* ' ' \t \r \n \f \v \0 */
114 #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
116 #define is_idchar(x) ((_cpp_IStable[x] & ISidnum) || _dollar_ok(x))
117 #define is_idstart(x) ((_cpp_IStable[x] & ISidstart) || _dollar_ok(x))
118 #define is_numchar(x) (_cpp_IStable[x] & ISidnum)
119 #define is_numstart(x) (_cpp_IStable[x] & ISnumstart)
120 #define is_hspace(x) (_cpp_IStable[x] & IShspace)
121 #define is_vspace(x) (_cpp_IStable[x] & ISvspace)
122 #define is_nvspace(x) ((_cpp_IStable[x] & (ISspace | ISvspace)) == ISspace)
123 #define is_space(x) (_cpp_IStable[x] & ISspace)
125 /* These tables are constant if they can be initialized at compile time,
126 which is the case if cpp was compiled with GCC >=2.7, or another
127 compiler that supports C99. */
128 #if HAVE_DESIGNATED_INITIALIZERS
129 extern const unsigned char _cpp_IStable
[UCHAR_MAX
+ 1];
130 extern const unsigned char _cpp_trigraph_map
[UCHAR_MAX
+ 1];
132 extern unsigned char _cpp_IStable
[UCHAR_MAX
+ 1];
133 extern unsigned char _cpp_trigraph_map
[UCHAR_MAX
+ 1];
138 #define CPP_PREV_BUFFER(BUFFER) ((BUFFER)->prev)
139 #define CPP_PRINT_DEPS(PFILE) CPP_OPTION (PFILE, print_deps)
140 #define CPP_IN_SYSTEM_HEADER(PFILE) \
141 (CPP_BUFFER (PFILE) && CPP_BUFFER (PFILE)->inc \
142 && CPP_BUFFER (PFILE)->inc->sysp)
143 #define CPP_PEDANTIC(PF) \
144 CPP_OPTION (PF, pedantic)
145 #define CPP_WTRADITIONAL(PF) \
146 CPP_OPTION (PF, warn_traditional)
148 /* Hash step. The hash calculation is duplicated in cpp_lookup and
150 #define HASHSTEP(r, c) ((r) * 67 + (c - 113));
153 enum error_type
{ WARNING
= 0, PEDWARN
, ERROR
, FATAL
, ICE
};
154 extern int _cpp_begin_message
PARAMS ((cpp_reader
*, enum error_type
,
155 const char *, const cpp_lexer_pos
*));
158 extern void _cpp_free_definition
PARAMS ((cpp_hashnode
*));
159 extern int _cpp_create_definition
PARAMS ((cpp_reader
*, cpp_hashnode
*));
160 extern void _cpp_pop_context
PARAMS ((cpp_reader
*));
161 extern void _cpp_get_token
PARAMS ((cpp_reader
*, cpp_token
*));
162 extern void _cpp_free_lookaheads
PARAMS ((cpp_reader
*));
163 extern void _cpp_push_token
PARAMS ((cpp_reader
*, const cpp_token
*,
164 const cpp_lexer_pos
*));
167 extern void _cpp_init_hashtable
PARAMS ((cpp_reader
*));
168 extern void _cpp_cleanup_hashtable
PARAMS ((cpp_reader
*));
169 extern cpp_hashnode
*_cpp_lookup_with_hash
PARAMS ((cpp_reader
*, size_t,
173 extern void _cpp_simplify_pathname
PARAMS ((char *));
174 extern void _cpp_execute_include
PARAMS ((cpp_reader
*,
175 const cpp_token
*, int,
176 struct file_name_list
*));
177 extern int _cpp_compare_file_date
PARAMS ((cpp_reader
*,
179 extern void _cpp_report_missing_guards
PARAMS ((cpp_reader
*));
180 extern void _cpp_init_includes
PARAMS ((cpp_reader
*));
181 extern void _cpp_cleanup_includes
PARAMS ((cpp_reader
*));
182 extern const char *_cpp_fake_include
PARAMS ((cpp_reader
*, const char *));
183 extern void _cpp_pop_file_buffer
PARAMS ((cpp_reader
*, cpp_buffer
*));
186 extern int _cpp_parse_expr
PARAMS ((cpp_reader
*));
189 extern void _cpp_lex_token
PARAMS ((cpp_reader
*, cpp_token
*));
190 extern int _cpp_equiv_tokens
PARAMS ((const cpp_token
*,
192 extern void _cpp_init_pool
PARAMS ((cpp_pool
*, unsigned int,
193 unsigned int, unsigned int));
194 extern void _cpp_free_pool
PARAMS ((cpp_pool
*));
195 extern unsigned char *_cpp_pool_reserve
PARAMS ((cpp_pool
*, unsigned int));
196 extern unsigned char *_cpp_pool_alloc
PARAMS ((cpp_pool
*, unsigned int));
197 extern unsigned char *_cpp_next_chunk
PARAMS ((cpp_pool
*, unsigned int,
199 extern void _cpp_lock_pool
PARAMS ((cpp_pool
*));
200 extern void _cpp_unlock_pool
PARAMS ((cpp_pool
*));
203 extern int _cpp_test_assertion
PARAMS ((cpp_reader
*, int *));
204 extern int _cpp_handle_directive
PARAMS ((cpp_reader
*, int));
205 extern void _cpp_define_builtin
PARAMS ((cpp_reader
*, const char *));
206 extern void _cpp_do__Pragma
PARAMS ((cpp_reader
*));
207 extern void _cpp_init_stacks
PARAMS ((cpp_reader
*));
208 extern void _cpp_cleanup_stacks
PARAMS ((cpp_reader
*));
209 extern void _cpp_init_internal_pragmas
PARAMS ((cpp_reader
*));
211 /* Utility routines and macros. */
212 #define DSC(str) (const U_CHAR *)str, sizeof str - 1
213 #define xnew(T) (T *) xmalloc (sizeof(T))
214 #define xcnew(T) (T *) xcalloc (1, sizeof(T))
215 #define xnewvec(T, N) (T *) xmalloc (sizeof(T) * (N))
216 #define xcnewvec(T, N) (T *) xcalloc (N, sizeof(T))
217 #define xobnew(O, T) (T *) obstack_alloc (O, sizeof(T))