7764 lines
208 KiB
C
7764 lines
208 KiB
C
/* CPP Library.
|
||
Copyright (C) 1986, 87, 89, 92-97, 1998 Free Software Foundation, Inc.
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Contributed by Per Bothner, 1994-95.
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Based on CCCP program by Paul Rubin, June 1986
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Adapted to ANSI C, Richard Stallman, Jan 1987
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||
|
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This program is free software; you can redistribute it and/or modify it
|
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
|
||
later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
|
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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||
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#include "config.h"
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#ifdef __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include "system.h"
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#ifndef STDC_VALUE
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#define STDC_VALUE 1
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#endif
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#include <signal.h>
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#ifdef HAVE_SYS_TIMES_H
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#include <sys/times.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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#endif
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#include "gansidecl.h"
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#include "cpplib.h"
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#include "cpphash.h"
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#ifndef GET_ENVIRONMENT
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#define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ENV_VALUE = getenv (ENV_NAME)
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#endif
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extern char *update_path PARAMS ((char *, char *));
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#undef MIN
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#undef MAX
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#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
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/* Find the largest host integer type and set its size and type.
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Watch out: on some crazy hosts `long' is shorter than `int'. */
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#ifndef HOST_WIDE_INT
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# if HAVE_INTTYPES_H
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# include <inttypes.h>
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# define HOST_WIDE_INT intmax_t
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# else
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# if (HOST_BITS_PER_LONG <= HOST_BITS_PER_INT \
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&& HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_INT)
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# define HOST_WIDE_INT int
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# else
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# if (HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_LONG \
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|| ! (defined LONG_LONG_MAX || defined LLONG_MAX))
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# define HOST_WIDE_INT long
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# else
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# define HOST_WIDE_INT long long
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# endif
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# endif
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# endif
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#endif
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#ifndef S_ISREG
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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#ifndef S_ISDIR
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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/* By default, colon separates directories in a path. */
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#ifndef PATH_SEPARATOR
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#define PATH_SEPARATOR ':'
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#endif
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#ifndef STANDARD_INCLUDE_DIR
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#define STANDARD_INCLUDE_DIR "/usr/include"
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#endif
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#ifndef INCLUDE_LEN_FUDGE
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#define INCLUDE_LEN_FUDGE 0
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#endif
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/* Symbols to predefine. */
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#ifdef CPP_PREDEFINES
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static char *predefs = CPP_PREDEFINES;
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#else
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static char *predefs = "";
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#endif
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/* We let tm.h override the types used here, to handle trivial differences
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such as the choice of unsigned int or long unsigned int for size_t.
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When machines start needing nontrivial differences in the size type,
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it would be best to do something here to figure out automatically
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from other information what type to use. */
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/* The string value for __SIZE_TYPE__. */
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#ifndef SIZE_TYPE
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#define SIZE_TYPE "long unsigned int"
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#endif
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/* The string value for __PTRDIFF_TYPE__. */
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#ifndef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "long int"
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#endif
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/* The string value for __WCHAR_TYPE__. */
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#ifndef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#endif
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#define CPP_WCHAR_TYPE(PFILE) \
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(CPP_OPTIONS (PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
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/* The string value for __USER_LABEL_PREFIX__ */
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#ifndef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX ""
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#endif
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/* The string value for __REGISTER_PREFIX__ */
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#ifndef REGISTER_PREFIX
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#define REGISTER_PREFIX ""
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#endif
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/* In the definition of a #assert name, this structure forms
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a list of the individual values asserted.
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Each value is itself a list of "tokens".
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These are strings that are compared by name. */
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struct tokenlist_list {
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struct tokenlist_list *next;
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struct arglist *tokens;
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};
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struct assertion_hashnode {
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struct assertion_hashnode *next; /* double links for easy deletion */
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struct assertion_hashnode *prev;
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/* also, a back pointer to this node's hash
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chain is kept, in case the node is the head
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of the chain and gets deleted. */
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struct assertion_hashnode **bucket_hdr;
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int length; /* length of token, for quick comparison */
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U_CHAR *name; /* the actual name */
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/* List of token-sequences. */
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struct tokenlist_list *value;
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};
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#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
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#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
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#define PEEKN(N) (CPP_BUFFER (pfile)->rlimit - CPP_BUFFER (pfile)->cur >= (N) ? CPP_BUFFER (pfile)->cur[N] : EOF)
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#define FORWARD(N) CPP_FORWARD (CPP_BUFFER (pfile), (N))
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#define GETC() CPP_BUF_GET (CPP_BUFFER (pfile))
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#define PEEKC() CPP_BUF_PEEK (CPP_BUFFER (pfile))
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/* CPP_IS_MACRO_BUFFER is true if the buffer contains macro expansion.
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(Note that it is false while we're expanding marco *arguments*.) */
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#define CPP_IS_MACRO_BUFFER(PBUF) ((PBUF)->cleanup == macro_cleanup)
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/* Move all backslash-newline pairs out of embarrassing places.
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Exchange all such pairs following BP
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with any potentially-embarrassing characters that follow them.
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Potentially-embarrassing characters are / and *
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(because a backslash-newline inside a comment delimiter
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would cause it not to be recognized). */
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#define NEWLINE_FIX \
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do {while (PEEKC() == '\\' && PEEKN(1) == '\n') FORWARD(2); } while(0)
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/* Same, but assume we've already read the potential '\\' into C. */
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#define NEWLINE_FIX1(C) do { \
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while ((C) == '\\' && PEEKC() == '\n') { FORWARD(1); (C) = GETC(); }\
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} while(0)
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struct cpp_pending {
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struct cpp_pending *next;
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char *cmd;
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char *arg;
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};
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/* Forward declarations. */
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char *xmalloc ();
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extern void cpp_hash_cleanup PARAMS ((cpp_reader *));
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static char *my_strerror PROTO ((int));
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static void add_import PROTO ((cpp_reader *, int, char *));
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static void append_include_chain PROTO ((cpp_reader *,
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struct file_name_list *,
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struct file_name_list *));
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static void make_assertion PROTO ((cpp_reader *, char *, U_CHAR *));
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static void path_include PROTO ((cpp_reader *, char *));
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static void initialize_builtins PROTO ((cpp_reader *));
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static void initialize_char_syntax PROTO ((struct cpp_options *));
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#if 0
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static void trigraph_pcp ();
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#endif
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static int finclude PROTO ((cpp_reader *, int, char *,
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int, struct file_name_list *));
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static void validate_else PROTO ((cpp_reader *, char *));
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static int comp_def_part PROTO ((int, U_CHAR *, int, U_CHAR *,
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int, int));
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#ifdef abort
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extern void fancy_abort ();
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#endif
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static int lookup_import PROTO ((cpp_reader *, char *,
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struct file_name_list *));
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static int redundant_include_p PROTO ((cpp_reader *, char *));
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static int is_system_include PROTO ((cpp_reader *, char *));
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static struct file_name_map *read_name_map PROTO ((cpp_reader *, char *));
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static char *read_filename_string PROTO ((int, FILE *));
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static int open_include_file PROTO ((cpp_reader *, char *,
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struct file_name_list *));
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static int check_macro_name PROTO ((cpp_reader *, U_CHAR *, char *));
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static int compare_defs PROTO ((cpp_reader *,
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DEFINITION *, DEFINITION *));
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static int compare_token_lists PROTO ((struct arglist *,
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struct arglist *));
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static HOST_WIDE_INT eval_if_expression PROTO ((cpp_reader *, U_CHAR *, int));
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static int change_newlines PROTO ((U_CHAR *, int));
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static struct arglist *read_token_list PROTO ((cpp_reader *, int *));
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static void free_token_list PROTO ((struct arglist *));
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static int safe_read PROTO ((int, char *, int));
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static void push_macro_expansion PARAMS ((cpp_reader *,
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U_CHAR *, int, HASHNODE *));
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static struct cpp_pending *nreverse_pending PARAMS ((struct cpp_pending *));
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extern char *xrealloc ();
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static char *xcalloc PROTO ((unsigned, unsigned));
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static char *savestring PROTO ((char *));
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static void conditional_skip PROTO ((cpp_reader *, int,
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enum node_type, U_CHAR *));
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static void skip_if_group PROTO ((cpp_reader *, int));
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static int parse_name PARAMS ((cpp_reader *, int));
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static void print_help PROTO ((void));
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/* Last arg to output_line_command. */
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enum file_change_code {same_file, enter_file, leave_file};
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/* External declarations. */
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extern HOST_WIDE_INT cpp_parse_expr PARAMS ((cpp_reader *));
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extern char *version_string;
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extern struct tm *localtime ();
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struct file_name_list
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{
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struct file_name_list *next;
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char *fname;
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/* If the following is nonzero, it is a macro name.
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Don't include the file again if that macro is defined. */
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U_CHAR *control_macro;
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/* If the following is nonzero, it is a C-language system include
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directory. */
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int c_system_include_path;
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/* Mapping of file names for this directory. */
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struct file_name_map *name_map;
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/* Non-zero if name_map is valid. */
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int got_name_map;
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};
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/* If a buffer's dir field is SELF_DIR_DUMMY, it means the file was found
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via the same directory as the file that #included it. */
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#define SELF_DIR_DUMMY ((struct file_name_list *) (~0))
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/* #include "file" looks in source file dir, then stack. */
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/* #include <file> just looks in the stack. */
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/* -I directories are added to the end, then the defaults are added. */
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/* The */
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static struct default_include {
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char *fname; /* The name of the directory. */
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char *component; /* The component containing the directory */
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int cplusplus; /* Only look here if we're compiling C++. */
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int cxx_aware; /* Includes in this directory don't need to
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be wrapped in extern "C" when compiling
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C++. */
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} include_defaults_array[]
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#ifdef INCLUDE_DEFAULTS
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= INCLUDE_DEFAULTS;
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#else
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= {
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/* Pick up GNU C++ specific include files. */
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{ GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
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{ OLD_GPLUSPLUS_INCLUDE_DIR, 0, 1, 1 },
|
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#ifdef CROSS_COMPILE
|
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/* This is the dir for fixincludes. Put it just before
|
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the files that we fix. */
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{ GCC_INCLUDE_DIR, "GCC", 0, 0 },
|
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/* For cross-compilation, this dir name is generated
|
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automatically in Makefile.in. */
|
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{ CROSS_INCLUDE_DIR, "GCC",0, 0 },
|
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#ifdef TOOL_INCLUDE_DIR
|
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/* This is another place that the target system's headers might be. */
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{ TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
|
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#endif
|
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#else /* not CROSS_COMPILE */
|
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#ifdef LOCAL_INCLUDE_DIR
|
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/* This should be /usr/local/include and should come before
|
||
the fixincludes-fixed header files. */
|
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{ LOCAL_INCLUDE_DIR, 0, 0, 1 },
|
||
#endif
|
||
#ifdef TOOL_INCLUDE_DIR
|
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/* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
|
||
Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
|
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{ TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
|
||
#endif
|
||
/* This is the dir for fixincludes. Put it just before
|
||
the files that we fix. */
|
||
{ GCC_INCLUDE_DIR, "GCC", 0, 0 },
|
||
/* Some systems have an extra dir of include files. */
|
||
#ifdef SYSTEM_INCLUDE_DIR
|
||
{ SYSTEM_INCLUDE_DIR, 0, 0, 0 },
|
||
#endif
|
||
#ifndef STANDARD_INCLUDE_COMPONENT
|
||
#define STANDARD_INCLUDE_COMPONENT 0
|
||
#endif
|
||
{ STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
|
||
#endif /* not CROSS_COMPILE */
|
||
{ 0, 0, 0, 0 }
|
||
};
|
||
#endif /* no INCLUDE_DEFAULTS */
|
||
|
||
/* `struct directive' defines one #-directive, including how to handle it. */
|
||
|
||
struct directive {
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||
int length; /* Length of name */
|
||
int (*func) /* Function to handle directive */
|
||
PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
char *name; /* Name of directive */
|
||
enum node_type type; /* Code which describes which directive. */
|
||
char command_reads_line; /* One if rest of line is read by func. */
|
||
};
|
||
|
||
/* These functions are declared to return int instead of void since they
|
||
are going to be placed in a table and some old compilers have trouble with
|
||
pointers to functions returning void. */
|
||
|
||
static int do_define PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_line PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_include PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_undef PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_error PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_pragma PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_ident PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_if PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_xifdef PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_else PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_elif PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_endif PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
#ifdef SCCS_DIRECTIVE
|
||
static int do_sccs PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
#endif
|
||
static int do_once PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_assert PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_unassert PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
static int do_warning PARAMS ((cpp_reader *, struct directive *, U_CHAR *, U_CHAR *));
|
||
|
||
#define IS_INCLUDE_DIRECTIVE_TYPE(t) \
|
||
((int) T_INCLUDE <= (int) (t) && (int) (t) <= (int) T_IMPORT)
|
||
|
||
/* Here is the actual list of #-directives, most-often-used first.
|
||
The initialize_builtins function assumes #define is the very first. */
|
||
|
||
static struct directive directive_table[] = {
|
||
{ 6, do_define, "define", T_DEFINE},
|
||
{ 5, do_xifdef, "ifdef", T_IFDEF, 1},
|
||
{ 6, do_xifdef, "ifndef", T_IFNDEF, 1},
|
||
{ 7, do_include, "include", T_INCLUDE, 1},
|
||
{ 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
|
||
{ 6, do_include, "import", T_IMPORT, 1},
|
||
{ 5, do_endif, "endif", T_ENDIF, 1},
|
||
{ 4, do_else, "else", T_ELSE, 1},
|
||
{ 2, do_if, "if", T_IF, 1},
|
||
{ 4, do_elif, "elif", T_ELIF, 1},
|
||
{ 5, do_undef, "undef", T_UNDEF},
|
||
{ 5, do_error, "error", T_ERROR},
|
||
{ 7, do_warning, "warning", T_WARNING},
|
||
{ 6, do_pragma, "pragma", T_PRAGMA},
|
||
{ 4, do_line, "line", T_LINE, 1},
|
||
{ 5, do_ident, "ident", T_IDENT, 1},
|
||
#ifdef SCCS_DIRECTIVE
|
||
{ 4, do_sccs, "sccs", T_SCCS},
|
||
#endif
|
||
{ 6, do_assert, "assert", T_ASSERT, 1},
|
||
{ 8, do_unassert, "unassert", T_UNASSERT, 1},
|
||
{ -1, 0, "", T_UNUSED},
|
||
};
|
||
|
||
/* table to tell if char can be part of a C identifier. */
|
||
U_CHAR is_idchar[256];
|
||
/* table to tell if char can be first char of a c identifier. */
|
||
U_CHAR is_idstart[256];
|
||
/* table to tell if c is horizontal space. */
|
||
U_CHAR is_hor_space[256];
|
||
/* table to tell if c is horizontal or vertical space. */
|
||
static U_CHAR is_space[256];
|
||
|
||
/* Initialize syntactic classifications of characters. */
|
||
|
||
static void
|
||
initialize_char_syntax (opts)
|
||
struct cpp_options *opts;
|
||
{
|
||
register int i;
|
||
|
||
/*
|
||
* Set up is_idchar and is_idstart tables. These should be
|
||
* faster than saying (is_alpha (c) || c == '_'), etc.
|
||
* Set up these things before calling any routines tthat
|
||
* refer to them.
|
||
*/
|
||
for (i = 'a'; i <= 'z'; i++) {
|
||
is_idchar[i - 'a' + 'A'] = 1;
|
||
is_idchar[i] = 1;
|
||
is_idstart[i - 'a' + 'A'] = 1;
|
||
is_idstart[i] = 1;
|
||
}
|
||
for (i = '0'; i <= '9'; i++)
|
||
is_idchar[i] = 1;
|
||
is_idchar['_'] = 1;
|
||
is_idstart['_'] = 1;
|
||
is_idchar['$'] = opts->dollars_in_ident;
|
||
is_idstart['$'] = opts->dollars_in_ident;
|
||
|
||
/* horizontal space table */
|
||
is_hor_space[' '] = 1;
|
||
is_hor_space['\t'] = 1;
|
||
is_hor_space['\v'] = 1;
|
||
is_hor_space['\f'] = 1;
|
||
is_hor_space['\r'] = 1;
|
||
|
||
is_space[' '] = 1;
|
||
is_space['\t'] = 1;
|
||
is_space['\v'] = 1;
|
||
is_space['\f'] = 1;
|
||
is_space['\n'] = 1;
|
||
is_space['\r'] = 1;
|
||
}
|
||
|
||
|
||
/* Place into PFILE a quoted string representing the string SRC.
|
||
Caller must reserve enough space in pfile->token_buffer. */
|
||
|
||
static void
|
||
quote_string (pfile, src)
|
||
cpp_reader *pfile;
|
||
char *src;
|
||
{
|
||
U_CHAR c;
|
||
|
||
CPP_PUTC_Q (pfile, '\"');
|
||
for (;;)
|
||
switch ((c = *src++))
|
||
{
|
||
default:
|
||
if (ISPRINT (c))
|
||
CPP_PUTC_Q (pfile, c);
|
||
else
|
||
{
|
||
sprintf ((char *)CPP_PWRITTEN (pfile), "\\%03o", c);
|
||
CPP_ADJUST_WRITTEN (pfile, 4);
|
||
}
|
||
break;
|
||
|
||
case '\"':
|
||
case '\\':
|
||
CPP_PUTC_Q (pfile, '\\');
|
||
CPP_PUTC_Q (pfile, c);
|
||
break;
|
||
|
||
case '\0':
|
||
CPP_PUTC_Q (pfile, '\"');
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Re-allocates PFILE->token_buffer so it will hold at least N more chars. */
|
||
|
||
void
|
||
cpp_grow_buffer (pfile, n)
|
||
cpp_reader *pfile;
|
||
long n;
|
||
{
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
pfile->token_buffer_size = n + 2 * pfile->token_buffer_size;
|
||
pfile->token_buffer = (U_CHAR *)
|
||
xrealloc(pfile->token_buffer, pfile->token_buffer_size);
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
}
|
||
|
||
|
||
/*
|
||
* process a given definition string, for initialization
|
||
* If STR is just an identifier, define it with value 1.
|
||
* If STR has anything after the identifier, then it should
|
||
* be identifier=definition.
|
||
*/
|
||
|
||
void
|
||
cpp_define (pfile, str)
|
||
cpp_reader *pfile;
|
||
U_CHAR *str;
|
||
{
|
||
U_CHAR *buf, *p;
|
||
|
||
buf = str;
|
||
p = str;
|
||
if (!is_idstart[*p])
|
||
{
|
||
cpp_error (pfile, "invalid macro name `%s'", str);
|
||
return;
|
||
}
|
||
while (is_idchar[*++p])
|
||
;
|
||
if (*p == 0)
|
||
{
|
||
buf = (U_CHAR *) alloca (p - buf + 4);
|
||
strcpy ((char *)buf, str);
|
||
strcat ((char *)buf, " 1");
|
||
}
|
||
else if (*p != '=')
|
||
{
|
||
cpp_error (pfile, "invalid macro name `%s'", str);
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
U_CHAR *q;
|
||
/* Copy the entire option so we can modify it. */
|
||
buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
|
||
strncpy (buf, str, p - str);
|
||
/* Change the = to a space. */
|
||
buf[p - str] = ' ';
|
||
/* Scan for any backslash-newline and remove it. */
|
||
p++;
|
||
q = &buf[p - str];
|
||
while (*p)
|
||
{
|
||
if (*p == '\\' && p[1] == '\n')
|
||
p += 2;
|
||
else
|
||
*q++ = *p++;
|
||
}
|
||
*q = 0;
|
||
}
|
||
|
||
do_define (pfile, NULL, buf, buf + strlen (buf));
|
||
}
|
||
|
||
/* Process the string STR as if it appeared as the body of a #assert.
|
||
OPTION is the option name for which STR was the argument. */
|
||
|
||
static void
|
||
make_assertion (pfile, option, str)
|
||
cpp_reader *pfile;
|
||
char *option;
|
||
U_CHAR *str;
|
||
{
|
||
U_CHAR *buf, *p, *q;
|
||
|
||
/* Copy the entire option so we can modify it. */
|
||
buf = (U_CHAR *) alloca (strlen (str) + 1);
|
||
strcpy ((char *) buf, str);
|
||
/* Scan for any backslash-newline and remove it. */
|
||
p = q = buf;
|
||
while (*p) {
|
||
#if 0
|
||
if (*p == '\\' && p[1] == '\n')
|
||
p += 2;
|
||
else
|
||
#endif
|
||
*q++ = *p++;
|
||
}
|
||
*q = 0;
|
||
|
||
p = buf;
|
||
if (!is_idstart[*p]) {
|
||
cpp_error (pfile, "malformed option `%s %s'", option, str);
|
||
return;
|
||
}
|
||
while (is_idchar[*++p])
|
||
;
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
if (! (*p == 0 || *p == '(')) {
|
||
cpp_error (pfile, "malformed option `%s %s'", option, str);
|
||
return;
|
||
}
|
||
|
||
if (cpp_push_buffer (pfile, buf, strlen (buf)) != NULL)
|
||
{
|
||
do_assert (pfile, NULL, NULL, NULL);
|
||
cpp_pop_buffer (pfile);
|
||
}
|
||
}
|
||
|
||
/* Append a chain of `struct file_name_list's
|
||
to the end of the main include chain.
|
||
FIRST is the beginning of the chain to append, and LAST is the end. */
|
||
|
||
static void
|
||
append_include_chain (pfile, first, last)
|
||
cpp_reader *pfile;
|
||
struct file_name_list *first, *last;
|
||
{
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
struct file_name_list *dir;
|
||
|
||
if (!first || !last)
|
||
return;
|
||
|
||
if (opts->include == 0)
|
||
opts->include = first;
|
||
else
|
||
opts->last_include->next = first;
|
||
|
||
if (opts->first_bracket_include == 0)
|
||
opts->first_bracket_include = first;
|
||
|
||
for (dir = first; ; dir = dir->next) {
|
||
int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
|
||
if (len > pfile->max_include_len)
|
||
pfile->max_include_len = len;
|
||
if (dir == last)
|
||
break;
|
||
}
|
||
|
||
last->next = NULL;
|
||
opts->last_include = last;
|
||
}
|
||
|
||
/* Add output to `deps_buffer' for the -M switch.
|
||
STRING points to the text to be output.
|
||
SPACER is ':' for targets, ' ' for dependencies, zero for text
|
||
to be inserted literally. */
|
||
|
||
static void
|
||
deps_output (pfile, string, spacer)
|
||
cpp_reader *pfile;
|
||
char *string;
|
||
int spacer;
|
||
{
|
||
int size = strlen (string);
|
||
|
||
if (size == 0)
|
||
return;
|
||
|
||
#ifndef MAX_OUTPUT_COLUMNS
|
||
#define MAX_OUTPUT_COLUMNS 72
|
||
#endif
|
||
if (spacer
|
||
&& pfile->deps_column > 0
|
||
&& (pfile->deps_column + size) > MAX_OUTPUT_COLUMNS)
|
||
{
|
||
deps_output (pfile, " \\\n ", 0);
|
||
pfile->deps_column = 0;
|
||
}
|
||
|
||
if (pfile->deps_size + size + 8 > pfile->deps_allocated_size)
|
||
{
|
||
pfile->deps_allocated_size = (pfile->deps_size + size + 50) * 2;
|
||
pfile->deps_buffer = (char *) xrealloc (pfile->deps_buffer,
|
||
pfile->deps_allocated_size);
|
||
}
|
||
if (spacer == ' ' && pfile->deps_column > 0)
|
||
pfile->deps_buffer[pfile->deps_size++] = ' ';
|
||
bcopy (string, &pfile->deps_buffer[pfile->deps_size], size);
|
||
pfile->deps_size += size;
|
||
pfile->deps_column += size;
|
||
if (spacer == ':')
|
||
pfile->deps_buffer[pfile->deps_size++] = ':';
|
||
pfile->deps_buffer[pfile->deps_size] = 0;
|
||
}
|
||
|
||
/* Given a colon-separated list of file names PATH,
|
||
add all the names to the search path for include files. */
|
||
|
||
static void
|
||
path_include (pfile, path)
|
||
cpp_reader *pfile;
|
||
char *path;
|
||
{
|
||
char *p;
|
||
|
||
p = path;
|
||
|
||
if (*p)
|
||
while (1) {
|
||
char *q = p;
|
||
char *name;
|
||
struct file_name_list *dirtmp;
|
||
|
||
/* Find the end of this name. */
|
||
while (*q != 0 && *q != PATH_SEPARATOR) q++;
|
||
if (p == q) {
|
||
/* An empty name in the path stands for the current directory. */
|
||
name = (char *) xmalloc (2);
|
||
name[0] = '.';
|
||
name[1] = 0;
|
||
} else {
|
||
/* Otherwise use the directory that is named. */
|
||
name = (char *) xmalloc (q - p + 1);
|
||
bcopy (p, name, q - p);
|
||
name[q - p] = 0;
|
||
}
|
||
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0; /* New one goes on the end */
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 0;
|
||
dirtmp->fname = name;
|
||
dirtmp->got_name_map = 0;
|
||
append_include_chain (pfile, dirtmp, dirtmp);
|
||
|
||
/* Advance past this name. */
|
||
p = q;
|
||
if (*p == 0)
|
||
break;
|
||
/* Skip the colon. */
|
||
p++;
|
||
}
|
||
}
|
||
|
||
void
|
||
cpp_options_init (opts)
|
||
cpp_options *opts;
|
||
{
|
||
bzero ((char *) opts, sizeof *opts);
|
||
opts->in_fname = NULL;
|
||
opts->out_fname = NULL;
|
||
|
||
/* Initialize is_idchar to allow $. */
|
||
opts->dollars_in_ident = 1;
|
||
initialize_char_syntax (opts);
|
||
|
||
opts->no_line_commands = 0;
|
||
opts->no_trigraphs = 1;
|
||
opts->put_out_comments = 0;
|
||
opts->print_include_names = 0;
|
||
opts->dump_macros = dump_none;
|
||
opts->no_output = 0;
|
||
opts->remap = 0;
|
||
opts->cplusplus = 0;
|
||
opts->cplusplus_comments = 1;
|
||
|
||
opts->verbose = 0;
|
||
opts->objc = 0;
|
||
opts->lang_asm = 0;
|
||
opts->for_lint = 0;
|
||
opts->chill = 0;
|
||
opts->pedantic_errors = 0;
|
||
opts->inhibit_warnings = 0;
|
||
opts->warn_comments = 0;
|
||
opts->warn_import = 1;
|
||
opts->warnings_are_errors = 0;
|
||
}
|
||
|
||
enum cpp_token
|
||
null_underflow (pfile)
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
{
|
||
return CPP_EOF;
|
||
}
|
||
|
||
int
|
||
null_cleanup (pbuf, pfile)
|
||
cpp_buffer *pbuf ATTRIBUTE_UNUSED;
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
macro_cleanup (pbuf, pfile)
|
||
cpp_buffer *pbuf;
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
{
|
||
HASHNODE *macro = (HASHNODE *) pbuf->data;
|
||
if (macro->type == T_DISABLED)
|
||
macro->type = T_MACRO;
|
||
if (macro->type != T_MACRO || pbuf->buf != macro->value.defn->expansion)
|
||
free (pbuf->buf);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
file_cleanup (pbuf, pfile)
|
||
cpp_buffer *pbuf;
|
||
cpp_reader *pfile ATTRIBUTE_UNUSED;
|
||
{
|
||
if (pbuf->buf)
|
||
{
|
||
free (pbuf->buf);
|
||
pbuf->buf = 0;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Assuming we have read '/'.
|
||
If this is the start of a comment (followed by '*' or '/'),
|
||
skip to the end of the comment, and return ' '.
|
||
Return EOF if we reached the end of file before the end of the comment.
|
||
If not the start of a comment, return '/'. */
|
||
|
||
static int
|
||
skip_comment (pfile, linep)
|
||
cpp_reader *pfile;
|
||
long *linep;
|
||
{
|
||
int c = 0;
|
||
while (PEEKC() == '\\' && PEEKN(1) == '\n')
|
||
{
|
||
if (linep)
|
||
(*linep)++;
|
||
FORWARD(2);
|
||
}
|
||
if (PEEKC() == '*')
|
||
{
|
||
FORWARD(1);
|
||
for (;;)
|
||
{
|
||
int prev_c = c;
|
||
c = GETC ();
|
||
if (c == EOF)
|
||
return EOF;
|
||
while (c == '\\' && PEEKC() == '\n')
|
||
{
|
||
if (linep)
|
||
(*linep)++;
|
||
FORWARD(1), c = GETC();
|
||
}
|
||
if (prev_c == '*' && c == '/')
|
||
return ' ';
|
||
if (c == '\n' && linep)
|
||
(*linep)++;
|
||
}
|
||
}
|
||
else if (PEEKC() == '/' && CPP_OPTIONS (pfile)->cplusplus_comments)
|
||
{
|
||
FORWARD(1);
|
||
for (;;)
|
||
{
|
||
c = GETC ();
|
||
if (c == EOF)
|
||
return ' '; /* Allow // to be terminated by EOF. */
|
||
while (c == '\\' && PEEKC() == '\n')
|
||
{
|
||
FORWARD(1);
|
||
c = GETC();
|
||
if (linep)
|
||
(*linep)++;
|
||
}
|
||
if (c == '\n')
|
||
{
|
||
/* Don't consider final '\n' to be part of comment. */
|
||
FORWARD(-1);
|
||
return ' ';
|
||
}
|
||
}
|
||
}
|
||
else
|
||
return '/';
|
||
}
|
||
|
||
/* Skip whitespace \-newline and comments. Does not macro-expand. */
|
||
|
||
void
|
||
cpp_skip_hspace (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
while (1)
|
||
{
|
||
int c = PEEKC();
|
||
if (c == EOF)
|
||
return; /* FIXME */
|
||
if (is_hor_space[c])
|
||
{
|
||
if ((c == '\f' || c == '\v') && CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "%s in preprocessing directive",
|
||
c == '\f' ? "formfeed" : "vertical tab");
|
||
FORWARD(1);
|
||
}
|
||
else if (c == '/')
|
||
{
|
||
FORWARD (1);
|
||
c = skip_comment (pfile, NULL);
|
||
if (c == '/')
|
||
FORWARD(-1);
|
||
if (c == EOF || c == '/')
|
||
return;
|
||
}
|
||
else if (c == '\\' && PEEKN(1) == '\n') {
|
||
FORWARD(2);
|
||
}
|
||
else if (c == '@' && CPP_BUFFER (pfile)->has_escapes
|
||
&& is_hor_space[PEEKN(1)])
|
||
FORWARD(2);
|
||
else return;
|
||
}
|
||
}
|
||
|
||
/* Read the rest of the current line.
|
||
The line is appended to PFILE's output buffer. */
|
||
|
||
static void
|
||
copy_rest_of_line (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
for (;;)
|
||
{
|
||
int c = GETC();
|
||
int nextc;
|
||
switch (c)
|
||
{
|
||
case EOF:
|
||
goto end_directive;
|
||
case '\\':
|
||
if (PEEKC() == '\n')
|
||
{
|
||
FORWARD (1);
|
||
continue;
|
||
}
|
||
case '\'':
|
||
case '\"':
|
||
goto scan_directive_token;
|
||
break;
|
||
case '/':
|
||
nextc = PEEKC();
|
||
if (nextc == '*' || (opts->cplusplus_comments && nextc == '/'))
|
||
goto scan_directive_token;
|
||
break;
|
||
case '\f':
|
||
case '\v':
|
||
if (CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "%s in preprocessing directive",
|
||
c == '\f' ? "formfeed" : "vertical tab");
|
||
break;
|
||
|
||
case '\n':
|
||
FORWARD(-1);
|
||
goto end_directive;
|
||
scan_directive_token:
|
||
FORWARD(-1);
|
||
cpp_get_token (pfile);
|
||
continue;
|
||
}
|
||
CPP_PUTC (pfile, c);
|
||
}
|
||
end_directive: ;
|
||
CPP_NUL_TERMINATE (pfile);
|
||
}
|
||
|
||
void
|
||
skip_rest_of_line (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
long old = CPP_WRITTEN (pfile);
|
||
copy_rest_of_line (pfile);
|
||
CPP_SET_WRITTEN (pfile, old);
|
||
}
|
||
|
||
/* Handle a possible # directive.
|
||
'#' has already been read. */
|
||
|
||
int
|
||
handle_directive (pfile)
|
||
cpp_reader *pfile;
|
||
{ int c;
|
||
register struct directive *kt;
|
||
int ident_length;
|
||
long after_ident;
|
||
U_CHAR *ident, *line_end;
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
|
||
cpp_skip_hspace (pfile);
|
||
|
||
c = PEEKC ();
|
||
if (c >= '0' && c <= '9')
|
||
{
|
||
/* Handle # followed by a line number. */
|
||
if (CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "`#' followed by integer");
|
||
do_line (pfile, NULL, NULL, NULL);
|
||
goto done_a_directive;
|
||
}
|
||
|
||
/* Now find the directive name. */
|
||
CPP_PUTC (pfile, '#');
|
||
parse_name (pfile, GETC());
|
||
ident = pfile->token_buffer + old_written + 1;
|
||
ident_length = CPP_PWRITTEN (pfile) - ident;
|
||
if (ident_length == 0 && PEEKC() == '\n')
|
||
{
|
||
/* A line of just `#' becomes blank. */
|
||
goto done_a_directive;
|
||
}
|
||
|
||
#if 0
|
||
if (ident_length == 0 || !is_idstart[*ident]) {
|
||
U_CHAR *p = ident;
|
||
while (is_idchar[*p]) {
|
||
if (*p < '0' || *p > '9')
|
||
break;
|
||
p++;
|
||
}
|
||
/* Avoid error for `###' and similar cases unless -pedantic. */
|
||
if (p == ident) {
|
||
while (*p == '#' || is_hor_space[*p]) p++;
|
||
if (*p == '\n') {
|
||
if (pedantic && !lang_asm)
|
||
cpp_warning (pfile, "invalid preprocessor directive");
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
if (!lang_asm)
|
||
cpp_error (pfile, "invalid preprocessor directive name");
|
||
|
||
return 0;
|
||
}
|
||
#endif
|
||
/*
|
||
* Decode the keyword and call the appropriate expansion
|
||
* routine, after moving the input pointer up to the next line.
|
||
*/
|
||
for (kt = directive_table; ; kt++) {
|
||
if (kt->length <= 0)
|
||
goto not_a_directive;
|
||
if (kt->length == ident_length && !strncmp (kt->name, ident, ident_length))
|
||
break;
|
||
}
|
||
|
||
if (kt->command_reads_line)
|
||
after_ident = 0;
|
||
else
|
||
{
|
||
/* Nonzero means do not delete comments within the directive.
|
||
#define needs this when -traditional. */
|
||
int comments = CPP_TRADITIONAL (pfile) && kt->type == T_DEFINE;
|
||
int save_put_out_comments = CPP_OPTIONS (pfile)->put_out_comments;
|
||
CPP_OPTIONS (pfile)->put_out_comments = comments;
|
||
after_ident = CPP_WRITTEN (pfile);
|
||
copy_rest_of_line (pfile);
|
||
CPP_OPTIONS (pfile)->put_out_comments = save_put_out_comments;
|
||
}
|
||
|
||
/* We may want to pass through #define, #pragma, and #include.
|
||
Other directives may create output, but we don't want the directive
|
||
itself out, so we pop it now. For example conditionals may emit
|
||
#failed ... #endfailed stuff. But note that popping the buffer
|
||
means the parameters to kt->func may point after pfile->limit
|
||
so these parameters are invalid as soon as something gets appended
|
||
to the token_buffer. */
|
||
|
||
line_end = CPP_PWRITTEN (pfile);
|
||
if (! (kt->type == T_DEFINE
|
||
|| kt->type == T_PRAGMA
|
||
|| (IS_INCLUDE_DIRECTIVE_TYPE (kt->type)
|
||
&& CPP_OPTIONS (pfile)->dump_includes)))
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
|
||
(*kt->func) (pfile, kt, pfile->token_buffer + after_ident, line_end);
|
||
|
||
if (kt->type == T_DEFINE)
|
||
{
|
||
if (CPP_OPTIONS (pfile)->dump_macros == dump_names)
|
||
{
|
||
/* Skip "#define". */
|
||
U_CHAR *p = pfile->token_buffer + old_written + 7;
|
||
|
||
SKIP_WHITE_SPACE (p);
|
||
while (is_idchar[*p]) p++;
|
||
pfile->limit = p;
|
||
CPP_PUTC (pfile, '\n');
|
||
}
|
||
else if (CPP_OPTIONS (pfile)->dump_macros != dump_definitions)
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
}
|
||
|
||
done_a_directive:
|
||
return 1;
|
||
|
||
not_a_directive:
|
||
return 0;
|
||
}
|
||
|
||
/* Pass a directive through to the output file.
|
||
BUF points to the contents of the directive, as a contiguous string.
|
||
LIMIT points to the first character past the end of the directive.
|
||
KEYWORD is the keyword-table entry for the directive. */
|
||
|
||
static void
|
||
pass_thru_directive (buf, limit, pfile, keyword)
|
||
U_CHAR *buf, *limit;
|
||
cpp_reader *pfile;
|
||
struct directive *keyword;
|
||
{
|
||
register unsigned keyword_length = keyword->length;
|
||
|
||
CPP_RESERVE (pfile, 1 + keyword_length + (limit - buf));
|
||
CPP_PUTC_Q (pfile, '#');
|
||
CPP_PUTS_Q (pfile, keyword->name, keyword_length);
|
||
if (limit != buf && buf[0] != ' ')
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
CPP_PUTS_Q (pfile, buf, limit - buf);
|
||
#if 0
|
||
CPP_PUTS_Q (pfile, '\n');
|
||
/* Count the line we have just made in the output,
|
||
to get in sync properly. */
|
||
pfile->lineno++;
|
||
#endif
|
||
}
|
||
|
||
/* The arglist structure is built by do_define to tell
|
||
collect_definition where the argument names begin. That
|
||
is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
|
||
would contain pointers to the strings x, y, and z.
|
||
Collect_definition would then build a DEFINITION node,
|
||
with reflist nodes pointing to the places x, y, and z had
|
||
appeared. So the arglist is just convenience data passed
|
||
between these two routines. It is not kept around after
|
||
the current #define has been processed and entered into the
|
||
hash table. */
|
||
|
||
struct arglist {
|
||
struct arglist *next;
|
||
U_CHAR *name;
|
||
int length;
|
||
int argno;
|
||
char rest_args;
|
||
};
|
||
|
||
/* Read a replacement list for a macro with parameters.
|
||
Build the DEFINITION structure.
|
||
Reads characters of text starting at BUF until END.
|
||
ARGLIST specifies the formal parameters to look for
|
||
in the text of the definition; NARGS is the number of args
|
||
in that list, or -1 for a macro name that wants no argument list.
|
||
MACRONAME is the macro name itself (so we can avoid recursive expansion)
|
||
and NAMELEN is its length in characters.
|
||
|
||
Note that comments, backslash-newlines, and leading white space
|
||
have already been deleted from the argument. */
|
||
|
||
static DEFINITION *
|
||
collect_expansion (pfile, buf, limit, nargs, arglist)
|
||
cpp_reader *pfile;
|
||
U_CHAR *buf, *limit;
|
||
int nargs;
|
||
struct arglist *arglist;
|
||
{
|
||
DEFINITION *defn;
|
||
register U_CHAR *p, *lastp, *exp_p;
|
||
struct reflist *endpat = NULL;
|
||
/* Pointer to first nonspace after last ## seen. */
|
||
U_CHAR *concat = 0;
|
||
/* Pointer to first nonspace after last single-# seen. */
|
||
U_CHAR *stringify = 0;
|
||
int maxsize;
|
||
int expected_delimiter = '\0';
|
||
|
||
/* Scan thru the replacement list, ignoring comments and quoted
|
||
strings, picking up on the macro calls. It does a linear search
|
||
thru the arg list on every potential symbol. Profiling might say
|
||
that something smarter should happen. */
|
||
|
||
if (limit < buf)
|
||
abort ();
|
||
|
||
/* Find the beginning of the trailing whitespace. */
|
||
p = buf;
|
||
while (p < limit && is_space[limit[-1]]) limit--;
|
||
|
||
/* Allocate space for the text in the macro definition.
|
||
Leading and trailing whitespace chars need 2 bytes each.
|
||
Each other input char may or may not need 1 byte,
|
||
so this is an upper bound. The extra 5 are for invented
|
||
leading and trailing newline-marker and final null. */
|
||
maxsize = (sizeof (DEFINITION)
|
||
+ (limit - p) + 5);
|
||
/* Occurrences of '@' get doubled, so allocate extra space for them. */
|
||
while (p < limit)
|
||
if (*p++ == '@')
|
||
maxsize++;
|
||
defn = (DEFINITION *) xcalloc (1, maxsize);
|
||
|
||
defn->nargs = nargs;
|
||
exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
|
||
lastp = exp_p;
|
||
|
||
p = buf;
|
||
|
||
/* Add one initial space escape-marker to prevent accidental
|
||
token-pasting (often removed by macroexpand). */
|
||
*exp_p++ = '@';
|
||
*exp_p++ = ' ';
|
||
|
||
if (limit - p >= 2 && p[0] == '#' && p[1] == '#') {
|
||
cpp_error (pfile, "`##' at start of macro definition");
|
||
p += 2;
|
||
}
|
||
|
||
/* Process the main body of the definition. */
|
||
while (p < limit) {
|
||
int skipped_arg = 0;
|
||
register U_CHAR c = *p++;
|
||
|
||
*exp_p++ = c;
|
||
|
||
if (!CPP_TRADITIONAL (pfile)) {
|
||
switch (c) {
|
||
case '\'':
|
||
case '\"':
|
||
if (expected_delimiter != '\0') {
|
||
if (c == expected_delimiter)
|
||
expected_delimiter = '\0';
|
||
} else
|
||
expected_delimiter = c;
|
||
break;
|
||
|
||
case '\\':
|
||
if (p < limit && expected_delimiter) {
|
||
/* In a string, backslash goes through
|
||
and makes next char ordinary. */
|
||
*exp_p++ = *p++;
|
||
}
|
||
break;
|
||
|
||
case '@':
|
||
/* An '@' in a string or character constant stands for itself,
|
||
and does not need to be escaped. */
|
||
if (!expected_delimiter)
|
||
*exp_p++ = c;
|
||
break;
|
||
|
||
case '#':
|
||
/* # is ordinary inside a string. */
|
||
if (expected_delimiter)
|
||
break;
|
||
if (p < limit && *p == '#') {
|
||
/* ##: concatenate preceding and following tokens. */
|
||
/* Take out the first #, discard preceding whitespace. */
|
||
exp_p--;
|
||
while (exp_p > lastp && is_hor_space[exp_p[-1]])
|
||
--exp_p;
|
||
/* Skip the second #. */
|
||
p++;
|
||
/* Discard following whitespace. */
|
||
SKIP_WHITE_SPACE (p);
|
||
concat = p;
|
||
if (p == limit)
|
||
cpp_error (pfile, "`##' at end of macro definition");
|
||
} else if (nargs >= 0) {
|
||
/* Single #: stringify following argument ref.
|
||
Don't leave the # in the expansion. */
|
||
exp_p--;
|
||
SKIP_WHITE_SPACE (p);
|
||
if (p == limit || ! is_idstart[*p]
|
||
|| (*p == 'L' && p + 1 < limit && (p[1] == '\'' || p[1] == '"')))
|
||
cpp_error (pfile,
|
||
"`#' operator is not followed by a macro argument name");
|
||
else
|
||
stringify = p;
|
||
}
|
||
break;
|
||
}
|
||
} else {
|
||
/* In -traditional mode, recognize arguments inside strings and
|
||
character constants, and ignore special properties of #.
|
||
Arguments inside strings are considered "stringified", but no
|
||
extra quote marks are supplied. */
|
||
switch (c) {
|
||
case '\'':
|
||
case '\"':
|
||
if (expected_delimiter != '\0') {
|
||
if (c == expected_delimiter)
|
||
expected_delimiter = '\0';
|
||
} else
|
||
expected_delimiter = c;
|
||
break;
|
||
|
||
case '\\':
|
||
/* Backslash quotes delimiters and itself, but not macro args. */
|
||
if (expected_delimiter != 0 && p < limit
|
||
&& (*p == expected_delimiter || *p == '\\')) {
|
||
*exp_p++ = *p++;
|
||
continue;
|
||
}
|
||
break;
|
||
|
||
case '/':
|
||
if (expected_delimiter != '\0') /* No comments inside strings. */
|
||
break;
|
||
if (*p == '*') {
|
||
/* If we find a comment that wasn't removed by handle_directive,
|
||
this must be -traditional. So replace the comment with
|
||
nothing at all. */
|
||
exp_p--;
|
||
p += 1;
|
||
while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
|
||
p++;
|
||
#if 0
|
||
/* Mark this as a concatenation-point, as if it had been ##. */
|
||
concat = p;
|
||
#endif
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Handle the start of a symbol. */
|
||
if (is_idchar[c] && nargs > 0) {
|
||
U_CHAR *id_beg = p - 1;
|
||
int id_len;
|
||
|
||
--exp_p;
|
||
while (p != limit && is_idchar[*p]) p++;
|
||
id_len = p - id_beg;
|
||
|
||
if (is_idstart[c]
|
||
&& ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '"'))) {
|
||
register struct arglist *arg;
|
||
|
||
for (arg = arglist; arg != NULL; arg = arg->next) {
|
||
struct reflist *tpat;
|
||
|
||
if (arg->name[0] == c
|
||
&& arg->length == id_len
|
||
&& strncmp (arg->name, id_beg, id_len) == 0) {
|
||
if (expected_delimiter && CPP_OPTIONS (pfile)->warn_stringify) {
|
||
if (CPP_TRADITIONAL (pfile)) {
|
||
cpp_warning (pfile, "macro argument `%.*s' is stringified.",
|
||
id_len, arg->name);
|
||
} else {
|
||
cpp_warning (pfile,
|
||
"macro arg `%.*s' would be stringified with -traditional.",
|
||
id_len, arg->name);
|
||
}
|
||
}
|
||
/* If ANSI, don't actually substitute inside a string. */
|
||
if (!CPP_TRADITIONAL (pfile) && expected_delimiter)
|
||
break;
|
||
/* make a pat node for this arg and append it to the end of
|
||
the pat list */
|
||
tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
|
||
tpat->next = NULL;
|
||
tpat->raw_before = concat == id_beg;
|
||
tpat->raw_after = 0;
|
||
tpat->rest_args = arg->rest_args;
|
||
tpat->stringify = (CPP_TRADITIONAL (pfile)
|
||
? expected_delimiter != '\0'
|
||
: stringify == id_beg);
|
||
|
||
if (endpat == NULL)
|
||
defn->pattern = tpat;
|
||
else
|
||
endpat->next = tpat;
|
||
endpat = tpat;
|
||
|
||
tpat->argno = arg->argno;
|
||
tpat->nchars = exp_p - lastp;
|
||
{
|
||
register U_CHAR *p1 = p;
|
||
SKIP_WHITE_SPACE (p1);
|
||
if (p1 + 2 <= limit && p1[0] == '#' && p1[1] == '#')
|
||
tpat->raw_after = 1;
|
||
}
|
||
lastp = exp_p; /* place to start copying from next time */
|
||
skipped_arg = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If this was not a macro arg, copy it into the expansion. */
|
||
if (! skipped_arg) {
|
||
register U_CHAR *lim1 = p;
|
||
p = id_beg;
|
||
while (p != lim1)
|
||
*exp_p++ = *p++;
|
||
if (stringify == id_beg)
|
||
cpp_error (pfile,
|
||
"`#' operator should be followed by a macro argument name");
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!CPP_TRADITIONAL (pfile) && expected_delimiter == 0)
|
||
{
|
||
/* If ANSI, put in a "@ " marker to prevent token pasting.
|
||
But not if "inside a string" (which in ANSI mode
|
||
happens only for -D option). */
|
||
*exp_p++ = '@';
|
||
*exp_p++ = ' ';
|
||
}
|
||
|
||
*exp_p = '\0';
|
||
|
||
defn->length = exp_p - defn->expansion;
|
||
|
||
/* Crash now if we overrun the allocated size. */
|
||
if (defn->length + 1 > maxsize)
|
||
abort ();
|
||
|
||
#if 0
|
||
/* This isn't worth the time it takes. */
|
||
/* give back excess storage */
|
||
defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
|
||
#endif
|
||
|
||
return defn;
|
||
}
|
||
|
||
/*
|
||
* special extension string that can be added to the last macro argument to
|
||
* allow it to absorb the "rest" of the arguments when expanded. Ex:
|
||
* #define wow(a, b...) process (b, a, b)
|
||
* { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
|
||
* { wow (one, two); } -> { process (two, one, two); }
|
||
* if this "rest_arg" is used with the concat token '##' and if it is not
|
||
* supplied then the token attached to with ## will not be outputted. Ex:
|
||
* #define wow (a, b...) process (b ## , a, ## b)
|
||
* { wow (1, 2); } -> { process (2, 1, 2); }
|
||
* { wow (one); } -> { process (one); {
|
||
*/
|
||
static char rest_extension[] = "...";
|
||
#define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
|
||
|
||
/* Create a DEFINITION node from a #define directive. Arguments are
|
||
as for do_define. */
|
||
|
||
static MACRODEF
|
||
create_definition (buf, limit, pfile, predefinition)
|
||
U_CHAR *buf, *limit;
|
||
cpp_reader *pfile;
|
||
int predefinition;
|
||
{
|
||
U_CHAR *bp; /* temp ptr into input buffer */
|
||
U_CHAR *symname; /* remember where symbol name starts */
|
||
int sym_length; /* and how long it is */
|
||
int rest_args = 0;
|
||
long line, col;
|
||
char *file = CPP_BUFFER (pfile) ? CPP_BUFFER (pfile)->nominal_fname : "";
|
||
DEFINITION *defn;
|
||
int arglengths = 0; /* Accumulate lengths of arg names
|
||
plus number of args. */
|
||
MACRODEF mdef;
|
||
cpp_buf_line_and_col (CPP_BUFFER (pfile), &line, &col);
|
||
|
||
bp = buf;
|
||
|
||
while (is_hor_space[*bp])
|
||
bp++;
|
||
|
||
symname = bp; /* remember where it starts */
|
||
|
||
sym_length = check_macro_name (pfile, bp, "macro");
|
||
bp += sym_length;
|
||
|
||
/* Lossage will occur if identifiers or control keywords are broken
|
||
across lines using backslash. This is not the right place to take
|
||
care of that. */
|
||
|
||
if (*bp == '(') {
|
||
struct arglist *arg_ptrs = NULL;
|
||
int argno = 0;
|
||
|
||
bp++; /* skip '(' */
|
||
SKIP_WHITE_SPACE (bp);
|
||
|
||
/* Loop over macro argument names. */
|
||
while (*bp != ')') {
|
||
struct arglist *temp;
|
||
|
||
temp = (struct arglist *) alloca (sizeof (struct arglist));
|
||
temp->name = bp;
|
||
temp->next = arg_ptrs;
|
||
temp->argno = argno++;
|
||
temp->rest_args = 0;
|
||
arg_ptrs = temp;
|
||
|
||
if (rest_args)
|
||
cpp_pedwarn (pfile, "another parameter follows `%s'", rest_extension);
|
||
|
||
if (!is_idstart[*bp])
|
||
cpp_pedwarn (pfile, "invalid character in macro parameter name");
|
||
|
||
/* Find the end of the arg name. */
|
||
while (is_idchar[*bp]) {
|
||
bp++;
|
||
/* do we have a "special" rest-args extension here? */
|
||
if (limit - bp > REST_EXTENSION_LENGTH
|
||
&& strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
|
||
rest_args = 1;
|
||
temp->rest_args = 1;
|
||
break;
|
||
}
|
||
}
|
||
temp->length = bp - temp->name;
|
||
if (rest_args == 1)
|
||
bp += REST_EXTENSION_LENGTH;
|
||
arglengths += temp->length + 2;
|
||
SKIP_WHITE_SPACE (bp);
|
||
if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
|
||
cpp_error (pfile, "badly punctuated parameter list in `#define'");
|
||
goto nope;
|
||
}
|
||
if (*bp == ',') {
|
||
bp++;
|
||
SKIP_WHITE_SPACE (bp);
|
||
}
|
||
if (bp >= limit) {
|
||
cpp_error (pfile, "unterminated parameter list in `#define'");
|
||
goto nope;
|
||
}
|
||
{
|
||
struct arglist *otemp;
|
||
|
||
for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
|
||
if (temp->length == otemp->length
|
||
&& strncmp (temp->name, otemp->name, temp->length) == 0) {
|
||
U_CHAR *name;
|
||
|
||
name = (U_CHAR *) alloca (temp->length + 1);
|
||
(void) strncpy (name, temp->name, temp->length);
|
||
name[temp->length] = '\0';
|
||
cpp_error (pfile,
|
||
"duplicate argument name `%s' in `#define'", name);
|
||
goto nope;
|
||
}
|
||
}
|
||
}
|
||
|
||
++bp; /* skip paren */
|
||
SKIP_WHITE_SPACE (bp);
|
||
/* now everything from bp before limit is the definition. */
|
||
defn = collect_expansion (pfile, bp, limit, argno, arg_ptrs);
|
||
defn->rest_args = rest_args;
|
||
|
||
/* Now set defn->args.argnames to the result of concatenating
|
||
the argument names in reverse order
|
||
with comma-space between them. */
|
||
defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
|
||
{
|
||
struct arglist *temp;
|
||
int i = 0;
|
||
for (temp = arg_ptrs; temp; temp = temp->next) {
|
||
bcopy (temp->name, &defn->args.argnames[i], temp->length);
|
||
i += temp->length;
|
||
if (temp->next != 0) {
|
||
defn->args.argnames[i++] = ',';
|
||
defn->args.argnames[i++] = ' ';
|
||
}
|
||
}
|
||
defn->args.argnames[i] = 0;
|
||
}
|
||
} else {
|
||
/* Simple expansion or empty definition. */
|
||
|
||
if (bp < limit)
|
||
{
|
||
if (is_hor_space[*bp]) {
|
||
bp++;
|
||
SKIP_WHITE_SPACE (bp);
|
||
} else {
|
||
switch (*bp) {
|
||
case '!': case '"': case '#': case '%': case '&': case '\'':
|
||
case ')': case '*': case '+': case ',': case '-': case '.':
|
||
case '/': case ':': case ';': case '<': case '=': case '>':
|
||
case '?': case '[': case '\\': case ']': case '^': case '{':
|
||
case '|': case '}': case '~':
|
||
cpp_warning (pfile, "missing white space after `#define %.*s'",
|
||
sym_length, symname);
|
||
break;
|
||
|
||
default:
|
||
cpp_pedwarn (pfile, "missing white space after `#define %.*s'",
|
||
sym_length, symname);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
/* now everything from bp before limit is the definition. */
|
||
defn = collect_expansion (pfile, bp, limit, -1, NULL_PTR);
|
||
defn->args.argnames = (U_CHAR *) "";
|
||
}
|
||
|
||
defn->line = line;
|
||
defn->file = file;
|
||
|
||
/* OP is null if this is a predefinition */
|
||
defn->predefined = predefinition;
|
||
mdef.defn = defn;
|
||
mdef.symnam = symname;
|
||
mdef.symlen = sym_length;
|
||
|
||
return mdef;
|
||
|
||
nope:
|
||
mdef.defn = 0;
|
||
return mdef;
|
||
}
|
||
|
||
/* Check a purported macro name SYMNAME, and yield its length.
|
||
USAGE is the kind of name this is intended for. */
|
||
|
||
static int
|
||
check_macro_name (pfile, symname, usage)
|
||
cpp_reader *pfile;
|
||
U_CHAR *symname;
|
||
char *usage;
|
||
{
|
||
U_CHAR *p;
|
||
int sym_length;
|
||
|
||
for (p = symname; is_idchar[*p]; p++)
|
||
;
|
||
sym_length = p - symname;
|
||
if (sym_length == 0
|
||
|| (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '"')))
|
||
cpp_error (pfile, "invalid %s name", usage);
|
||
else if (!is_idstart[*symname]) {
|
||
U_CHAR *msg; /* what pain... */
|
||
msg = (U_CHAR *) alloca (sym_length + 1);
|
||
bcopy (symname, msg, sym_length);
|
||
msg[sym_length] = 0;
|
||
cpp_error (pfile, "invalid %s name `%s'", usage, msg);
|
||
} else {
|
||
if (! strncmp (symname, "defined", 7) && sym_length == 7)
|
||
cpp_error (pfile, "invalid %s name `defined'", usage);
|
||
}
|
||
return sym_length;
|
||
}
|
||
|
||
/* Return zero if two DEFINITIONs are isomorphic. */
|
||
|
||
static int
|
||
compare_defs (pfile, d1, d2)
|
||
cpp_reader *pfile;
|
||
DEFINITION *d1, *d2;
|
||
{
|
||
register struct reflist *a1, *a2;
|
||
register U_CHAR *p1 = d1->expansion;
|
||
register U_CHAR *p2 = d2->expansion;
|
||
int first = 1;
|
||
|
||
if (d1->nargs != d2->nargs)
|
||
return 1;
|
||
if (CPP_PEDANTIC (pfile)
|
||
&& strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
|
||
return 1;
|
||
for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
|
||
a1 = a1->next, a2 = a2->next) {
|
||
if (!((a1->nchars == a2->nchars && ! strncmp (p1, p2, a1->nchars))
|
||
|| ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
|
||
|| a1->argno != a2->argno
|
||
|| a1->stringify != a2->stringify
|
||
|| a1->raw_before != a2->raw_before
|
||
|| a1->raw_after != a2->raw_after)
|
||
return 1;
|
||
first = 0;
|
||
p1 += a1->nchars;
|
||
p2 += a2->nchars;
|
||
}
|
||
if (a1 != a2)
|
||
return 1;
|
||
if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
|
||
p2, d2->length - (p2 - d2->expansion), 1))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
/* Return 1 if two parts of two macro definitions are effectively different.
|
||
One of the parts starts at BEG1 and has LEN1 chars;
|
||
the other has LEN2 chars at BEG2.
|
||
Any sequence of whitespace matches any other sequence of whitespace.
|
||
FIRST means these parts are the first of a macro definition;
|
||
so ignore leading whitespace entirely.
|
||
LAST means these parts are the last of a macro definition;
|
||
so ignore trailing whitespace entirely. */
|
||
|
||
static int
|
||
comp_def_part (first, beg1, len1, beg2, len2, last)
|
||
int first;
|
||
U_CHAR *beg1, *beg2;
|
||
int len1, len2;
|
||
int last;
|
||
{
|
||
register U_CHAR *end1 = beg1 + len1;
|
||
register U_CHAR *end2 = beg2 + len2;
|
||
if (first) {
|
||
while (beg1 != end1 && is_space[*beg1]) beg1++;
|
||
while (beg2 != end2 && is_space[*beg2]) beg2++;
|
||
}
|
||
if (last) {
|
||
while (beg1 != end1 && is_space[end1[-1]]) end1--;
|
||
while (beg2 != end2 && is_space[end2[-1]]) end2--;
|
||
}
|
||
while (beg1 != end1 && beg2 != end2) {
|
||
if (is_space[*beg1] && is_space[*beg2]) {
|
||
while (beg1 != end1 && is_space[*beg1]) beg1++;
|
||
while (beg2 != end2 && is_space[*beg2]) beg2++;
|
||
} else if (*beg1 == *beg2) {
|
||
beg1++; beg2++;
|
||
} else break;
|
||
}
|
||
return (beg1 != end1) || (beg2 != end2);
|
||
}
|
||
|
||
/* Process a #define command.
|
||
BUF points to the contents of the #define command, as a contiguous string.
|
||
LIMIT points to the first character past the end of the definition.
|
||
KEYWORD is the keyword-table entry for #define,
|
||
or NULL for a "predefined" macro. */
|
||
|
||
static int
|
||
do_define (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
int hashcode;
|
||
MACRODEF mdef;
|
||
HASHNODE *hp;
|
||
|
||
#if 0
|
||
/* If this is a precompiler run (with -pcp) pass thru #define commands. */
|
||
if (pcp_outfile && keyword)
|
||
pass_thru_directive (buf, limit, pfile, keyword);
|
||
#endif
|
||
|
||
mdef = create_definition (buf, limit, pfile, keyword == NULL);
|
||
if (mdef.defn == 0)
|
||
goto nope;
|
||
|
||
hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
|
||
|
||
if ((hp = cpp_lookup (pfile, mdef.symnam, mdef.symlen, hashcode)) != NULL)
|
||
{
|
||
int ok = 0;
|
||
/* Redefining a precompiled key is ok. */
|
||
if (hp->type == T_PCSTRING)
|
||
ok = 1;
|
||
/* Redefining a macro is ok if the definitions are the same. */
|
||
else if (hp->type == T_MACRO)
|
||
ok = ! compare_defs (pfile, mdef.defn, hp->value.defn);
|
||
/* Redefining a constant is ok with -D. */
|
||
else if (hp->type == T_CONST)
|
||
ok = ! CPP_OPTIONS (pfile)->done_initializing;
|
||
/* Print the warning if it's not ok. */
|
||
if (!ok)
|
||
{
|
||
U_CHAR *msg; /* what pain... */
|
||
|
||
/* If we are passing through #define and #undef directives, do
|
||
that for this re-definition now. */
|
||
if (CPP_OPTIONS (pfile)->debug_output && keyword)
|
||
pass_thru_directive (buf, limit, pfile, keyword);
|
||
|
||
msg = (U_CHAR *) alloca (mdef.symlen + 22);
|
||
*msg = '`';
|
||
bcopy (mdef.symnam, msg + 1, mdef.symlen);
|
||
strcpy ((char *) (msg + mdef.symlen + 1), "' redefined");
|
||
cpp_pedwarn (pfile, msg);
|
||
if (hp->type == T_MACRO)
|
||
cpp_pedwarn_with_file_and_line (pfile, hp->value.defn->file, hp->value.defn->line,
|
||
"this is the location of the previous definition");
|
||
}
|
||
/* Replace the old definition. */
|
||
hp->type = T_MACRO;
|
||
hp->value.defn = mdef.defn;
|
||
}
|
||
else
|
||
{
|
||
/* If we are passing through #define and #undef directives, do
|
||
that for this new definition now. */
|
||
if (CPP_OPTIONS (pfile)->debug_output && keyword)
|
||
pass_thru_directive (buf, limit, pfile, keyword);
|
||
install (mdef.symnam, mdef.symlen, T_MACRO, 0,
|
||
(char *) mdef.defn, hashcode);
|
||
}
|
||
|
||
return 0;
|
||
|
||
nope:
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* This structure represents one parsed argument in a macro call.
|
||
`raw' points to the argument text as written (`raw_length' is its length).
|
||
`expanded' points to the argument's macro-expansion
|
||
(its length is `expand_length').
|
||
`stringified_length' is the length the argument would have
|
||
if stringified.
|
||
`use_count' is the number of times this macro arg is substituted
|
||
into the macro. If the actual use count exceeds 10,
|
||
the value stored is 10. */
|
||
|
||
/* raw and expanded are relative to ARG_BASE */
|
||
#define ARG_BASE ((pfile)->token_buffer)
|
||
|
||
struct argdata {
|
||
/* Strings relative to pfile->token_buffer */
|
||
long raw, expanded, stringified;
|
||
int raw_length, expand_length;
|
||
int stringified_length;
|
||
char newlines;
|
||
char use_count;
|
||
};
|
||
|
||
/* Allocate a new cpp_buffer for PFILE, and push it on the input buffer stack.
|
||
If BUFFER != NULL, then use the LENGTH characters in BUFFER
|
||
as the new input buffer.
|
||
Return the new buffer, or NULL on failure. */
|
||
|
||
cpp_buffer *
|
||
cpp_push_buffer (pfile, buffer, length)
|
||
cpp_reader *pfile;
|
||
U_CHAR *buffer;
|
||
long length;
|
||
{
|
||
register cpp_buffer *buf = CPP_BUFFER (pfile);
|
||
if (buf == pfile->buffer_stack)
|
||
{
|
||
cpp_fatal (pfile, "%s: macro or `#include' recursion too deep",
|
||
buf->fname);
|
||
return NULL;
|
||
}
|
||
buf--;
|
||
bzero ((char *) buf, sizeof (cpp_buffer));
|
||
CPP_BUFFER (pfile) = buf;
|
||
buf->if_stack = pfile->if_stack;
|
||
buf->cleanup = null_cleanup;
|
||
buf->underflow = null_underflow;
|
||
buf->buf = buf->cur = buffer;
|
||
buf->alimit = buf->rlimit = buffer + length;
|
||
|
||
return buf;
|
||
}
|
||
|
||
cpp_buffer *
|
||
cpp_pop_buffer (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *buf = CPP_BUFFER (pfile);
|
||
(*buf->cleanup) (buf, pfile);
|
||
return ++CPP_BUFFER (pfile);
|
||
}
|
||
|
||
/* Scan until CPP_BUFFER (PFILE) is exhausted into PFILE->token_buffer.
|
||
Pop the buffer when done. */
|
||
|
||
void
|
||
cpp_scan_buffer (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *buffer = CPP_BUFFER (pfile);
|
||
for (;;)
|
||
{
|
||
enum cpp_token token = cpp_get_token (pfile);
|
||
if (token == CPP_EOF) /* Should not happen ... */
|
||
break;
|
||
if (token == CPP_POP && CPP_BUFFER (pfile) == buffer)
|
||
{
|
||
cpp_pop_buffer (pfile);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Rescan a string (which may have escape marks) into pfile's buffer.
|
||
* Place the result in pfile->token_buffer.
|
||
*
|
||
* The input is copied before it is scanned, so it is safe to pass
|
||
* it something from the token_buffer that will get overwritten
|
||
* (because it follows CPP_WRITTEN). This is used by do_include.
|
||
*/
|
||
|
||
static void
|
||
cpp_expand_to_buffer (pfile, buf, length)
|
||
cpp_reader *pfile;
|
||
U_CHAR *buf;
|
||
int length;
|
||
{
|
||
register cpp_buffer *ip;
|
||
#if 0
|
||
cpp_buffer obuf;
|
||
#endif
|
||
U_CHAR *limit = buf + length;
|
||
U_CHAR *buf1;
|
||
#if 0
|
||
int odepth = indepth;
|
||
#endif
|
||
|
||
if (length < 0)
|
||
abort ();
|
||
|
||
/* Set up the input on the input stack. */
|
||
|
||
buf1 = (U_CHAR *) alloca (length + 1);
|
||
{
|
||
register U_CHAR *p1 = buf;
|
||
register U_CHAR *p2 = buf1;
|
||
|
||
while (p1 != limit)
|
||
*p2++ = *p1++;
|
||
}
|
||
buf1[length] = 0;
|
||
|
||
ip = cpp_push_buffer (pfile, buf1, length);
|
||
if (ip == NULL)
|
||
return;
|
||
ip->has_escapes = 1;
|
||
#if 0
|
||
ip->lineno = obuf.lineno = 1;
|
||
#endif
|
||
|
||
/* Scan the input, create the output. */
|
||
cpp_scan_buffer (pfile);
|
||
|
||
#if 0
|
||
if (indepth != odepth)
|
||
abort ();
|
||
#endif
|
||
|
||
CPP_NUL_TERMINATE (pfile);
|
||
}
|
||
|
||
|
||
static void
|
||
adjust_position (buf, limit, linep, colp)
|
||
U_CHAR *buf;
|
||
U_CHAR *limit;
|
||
long *linep;
|
||
long *colp;
|
||
{
|
||
while (buf < limit)
|
||
{
|
||
U_CHAR ch = *buf++;
|
||
if (ch == '\n')
|
||
(*linep)++, (*colp) = 1;
|
||
else
|
||
(*colp)++;
|
||
}
|
||
}
|
||
|
||
/* Move line_base forward, updating lineno and colno. */
|
||
|
||
static void
|
||
update_position (pbuf)
|
||
register cpp_buffer *pbuf;
|
||
{
|
||
unsigned char *old_pos = pbuf->buf + pbuf->line_base;
|
||
unsigned char *new_pos = pbuf->cur;
|
||
register struct parse_marker *mark;
|
||
for (mark = pbuf->marks; mark != NULL; mark = mark->next)
|
||
{
|
||
if (pbuf->buf + mark->position < new_pos)
|
||
new_pos = pbuf->buf + mark->position;
|
||
}
|
||
pbuf->line_base += new_pos - old_pos;
|
||
adjust_position (old_pos, new_pos, &pbuf->lineno, &pbuf->colno);
|
||
}
|
||
|
||
void
|
||
cpp_buf_line_and_col (pbuf, linep, colp)
|
||
register cpp_buffer *pbuf;
|
||
long *linep, *colp;
|
||
{
|
||
long dummy;
|
||
if (colp == NULL)
|
||
colp = &dummy;
|
||
if (pbuf)
|
||
{
|
||
*linep = pbuf->lineno;
|
||
*colp = pbuf->colno;
|
||
adjust_position (pbuf->buf + pbuf->line_base, pbuf->cur, linep, colp);
|
||
}
|
||
else
|
||
{
|
||
*linep = 0;
|
||
*colp = 0;
|
||
}
|
||
}
|
||
|
||
/* Return the cpp_buffer that corresponds to a file (not a macro). */
|
||
|
||
cpp_buffer *
|
||
cpp_file_buffer (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *ip = CPP_BUFFER (pfile);
|
||
|
||
for ( ; ip != CPP_NULL_BUFFER (pfile); ip = CPP_PREV_BUFFER (ip))
|
||
if (ip->fname != NULL)
|
||
return ip;
|
||
return NULL;
|
||
}
|
||
|
||
static long
|
||
count_newlines (buf, limit)
|
||
register U_CHAR *buf;
|
||
register U_CHAR *limit;
|
||
{
|
||
register long count = 0;
|
||
while (buf < limit)
|
||
{
|
||
U_CHAR ch = *buf++;
|
||
if (ch == '\n')
|
||
count++;
|
||
}
|
||
return count;
|
||
}
|
||
|
||
/*
|
||
* write out a #line command, for instance, after an #include file.
|
||
* If CONDITIONAL is nonzero, we can omit the #line if it would
|
||
* appear to be a no-op, and we can output a few newlines instead
|
||
* if we want to increase the line number by a small amount.
|
||
* FILE_CHANGE says whether we are entering a file, leaving, or neither.
|
||
*/
|
||
|
||
static void
|
||
output_line_command (pfile, conditional, file_change)
|
||
cpp_reader *pfile;
|
||
int conditional;
|
||
enum file_change_code file_change;
|
||
{
|
||
long line, col;
|
||
cpp_buffer *ip = CPP_BUFFER (pfile);
|
||
|
||
if (ip->fname == NULL)
|
||
return;
|
||
|
||
update_position (ip);
|
||
|
||
if (CPP_OPTIONS (pfile)->no_line_commands
|
||
|| CPP_OPTIONS (pfile)->no_output)
|
||
return;
|
||
|
||
line = CPP_BUFFER (pfile)->lineno;
|
||
col = CPP_BUFFER (pfile)->colno;
|
||
adjust_position (CPP_LINE_BASE (ip), ip->cur, &line, &col);
|
||
|
||
if (CPP_OPTIONS (pfile)->no_line_commands)
|
||
return;
|
||
|
||
if (conditional) {
|
||
if (line == pfile->lineno)
|
||
return;
|
||
|
||
/* If the inherited line number is a little too small,
|
||
output some newlines instead of a #line command. */
|
||
if (line > pfile->lineno && line < pfile->lineno + 8) {
|
||
CPP_RESERVE (pfile, 20);
|
||
while (line > pfile->lineno) {
|
||
CPP_PUTC_Q (pfile, '\n');
|
||
pfile->lineno++;
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* Don't output a line number of 0 if we can help it. */
|
||
if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
|
||
&& *ip->bufp == '\n') {
|
||
ip->lineno++;
|
||
ip->bufp++;
|
||
}
|
||
#endif
|
||
|
||
CPP_RESERVE (pfile, 4 * strlen (ip->nominal_fname) + 50);
|
||
{
|
||
#ifdef OUTPUT_LINE_COMMANDS
|
||
static char sharp_line[] = "#line ";
|
||
#else
|
||
static char sharp_line[] = "# ";
|
||
#endif
|
||
CPP_PUTS_Q (pfile, sharp_line, sizeof(sharp_line)-1);
|
||
}
|
||
|
||
sprintf ((char *) CPP_PWRITTEN (pfile), "%ld ", line);
|
||
CPP_ADJUST_WRITTEN (pfile, strlen (CPP_PWRITTEN (pfile)));
|
||
|
||
quote_string (pfile, ip->nominal_fname);
|
||
if (file_change != same_file) {
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
CPP_PUTC_Q (pfile, file_change == enter_file ? '1' : '2');
|
||
}
|
||
/* Tell cc1 if following text comes from a system header file. */
|
||
if (ip->system_header_p) {
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
CPP_PUTC_Q (pfile, '3');
|
||
}
|
||
#ifndef NO_IMPLICIT_EXTERN_C
|
||
/* Tell cc1plus if following text should be treated as C. */
|
||
if (ip->system_header_p == 2 && CPP_OPTIONS (pfile)->cplusplus) {
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
CPP_PUTC_Q (pfile, '4');
|
||
}
|
||
#endif
|
||
CPP_PUTC_Q (pfile, '\n');
|
||
pfile->lineno = line;
|
||
}
|
||
|
||
/*
|
||
* Parse a macro argument and append the info on PFILE's token_buffer.
|
||
* REST_ARGS means to absorb the rest of the args.
|
||
* Return nonzero to indicate a syntax error.
|
||
*/
|
||
|
||
static enum cpp_token
|
||
macarg (pfile, rest_args)
|
||
cpp_reader *pfile;
|
||
int rest_args;
|
||
{
|
||
int paren = 0;
|
||
enum cpp_token token;
|
||
char save_put_out_comments = CPP_OPTIONS (pfile)->put_out_comments;
|
||
CPP_OPTIONS (pfile)->put_out_comments = 0;
|
||
|
||
/* Try to parse as much of the argument as exists at this
|
||
input stack level. */
|
||
pfile->no_macro_expand++;
|
||
for (;;)
|
||
{
|
||
token = cpp_get_token (pfile);
|
||
switch (token)
|
||
{
|
||
case CPP_EOF:
|
||
goto done;
|
||
case CPP_POP:
|
||
/* If we've hit end of file, it's an error (reported by caller).
|
||
Ditto if it's the end of cpp_expand_to_buffer text.
|
||
If we've hit end of macro, just continue. */
|
||
if (! CPP_IS_MACRO_BUFFER (CPP_BUFFER (pfile)))
|
||
goto done;
|
||
break;
|
||
case CPP_LPAREN:
|
||
paren++;
|
||
break;
|
||
case CPP_RPAREN:
|
||
if (--paren < 0)
|
||
goto found;
|
||
break;
|
||
case CPP_COMMA:
|
||
/* if we've returned to lowest level and
|
||
we aren't absorbing all args */
|
||
if (paren == 0 && rest_args == 0)
|
||
goto found;
|
||
break;
|
||
found:
|
||
/* Remove ',' or ')' from argument buffer. */
|
||
CPP_ADJUST_WRITTEN (pfile, -1);
|
||
goto done;
|
||
default: ;
|
||
}
|
||
}
|
||
|
||
done:
|
||
CPP_OPTIONS (pfile)->put_out_comments = save_put_out_comments;
|
||
pfile->no_macro_expand--;
|
||
|
||
return token;
|
||
}
|
||
|
||
/* Turn newlines to spaces in the string of length LENGTH at START,
|
||
except inside of string constants.
|
||
The string is copied into itself with its beginning staying fixed. */
|
||
|
||
static int
|
||
change_newlines (start, length)
|
||
U_CHAR *start;
|
||
int length;
|
||
{
|
||
register U_CHAR *ibp;
|
||
register U_CHAR *obp;
|
||
register U_CHAR *limit;
|
||
register int c;
|
||
|
||
ibp = start;
|
||
limit = start + length;
|
||
obp = start;
|
||
|
||
while (ibp < limit) {
|
||
*obp++ = c = *ibp++;
|
||
switch (c) {
|
||
|
||
case '\'':
|
||
case '\"':
|
||
/* Notice and skip strings, so that we don't delete newlines in them. */
|
||
{
|
||
int quotec = c;
|
||
while (ibp < limit) {
|
||
*obp++ = c = *ibp++;
|
||
if (c == quotec)
|
||
break;
|
||
if (c == '\n' && quotec == '\'')
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
return obp - start;
|
||
}
|
||
|
||
|
||
static struct tm *
|
||
timestamp (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
if (!pfile->timebuf) {
|
||
time_t t = time ((time_t *) 0);
|
||
pfile->timebuf = localtime (&t);
|
||
}
|
||
return pfile->timebuf;
|
||
}
|
||
|
||
static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
|
||
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
|
||
};
|
||
|
||
/*
|
||
* expand things like __FILE__. Place the expansion into the output
|
||
* buffer *without* rescanning.
|
||
*/
|
||
|
||
static void
|
||
special_symbol (hp, pfile)
|
||
HASHNODE *hp;
|
||
cpp_reader *pfile;
|
||
{
|
||
char *buf;
|
||
int len;
|
||
int true_indepth;
|
||
cpp_buffer *ip = NULL;
|
||
struct tm *timebuf;
|
||
|
||
int paren = 0; /* For special `defined' keyword */
|
||
|
||
#if 0
|
||
if (pcp_outfile && pcp_inside_if
|
||
&& hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
|
||
cpp_error (pfile,
|
||
"Predefined macro `%s' used inside `#if' during precompilation",
|
||
hp->name);
|
||
#endif
|
||
|
||
for (ip = CPP_BUFFER (pfile); ; ip = CPP_PREV_BUFFER (ip))
|
||
{
|
||
if (ip == CPP_NULL_BUFFER (pfile))
|
||
{
|
||
cpp_error (pfile, "cccp error: not in any file?!");
|
||
return; /* the show must go on */
|
||
}
|
||
if (ip->fname != NULL)
|
||
break;
|
||
}
|
||
|
||
switch (hp->type)
|
||
{
|
||
case T_FILE:
|
||
case T_BASE_FILE:
|
||
{
|
||
char *string;
|
||
if (hp->type == T_BASE_FILE)
|
||
{
|
||
while (CPP_PREV_BUFFER (ip) != CPP_NULL_BUFFER (pfile))
|
||
ip = CPP_PREV_BUFFER (ip);
|
||
}
|
||
string = ip->nominal_fname;
|
||
|
||
if (!string)
|
||
string = "";
|
||
CPP_RESERVE (pfile, 3 + 4 * strlen (string));
|
||
quote_string (pfile, string);
|
||
return;
|
||
}
|
||
|
||
case T_INCLUDE_LEVEL:
|
||
true_indepth = 0;
|
||
ip = CPP_BUFFER (pfile);
|
||
for (; ip != CPP_NULL_BUFFER (pfile); ip = CPP_PREV_BUFFER (ip))
|
||
if (ip->fname != NULL)
|
||
true_indepth++;
|
||
|
||
buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
|
||
sprintf (buf, "%d", true_indepth - 1);
|
||
break;
|
||
|
||
case T_VERSION:
|
||
buf = (char *) alloca (3 + strlen (version_string));
|
||
sprintf (buf, "\"%s\"", version_string);
|
||
break;
|
||
|
||
#ifndef NO_BUILTIN_SIZE_TYPE
|
||
case T_SIZE_TYPE:
|
||
buf = SIZE_TYPE;
|
||
break;
|
||
#endif
|
||
|
||
#ifndef NO_BUILTIN_PTRDIFF_TYPE
|
||
case T_PTRDIFF_TYPE:
|
||
buf = PTRDIFF_TYPE;
|
||
break;
|
||
#endif
|
||
|
||
case T_WCHAR_TYPE:
|
||
buf = CPP_WCHAR_TYPE (pfile);
|
||
break;
|
||
|
||
case T_USER_LABEL_PREFIX_TYPE:
|
||
buf = USER_LABEL_PREFIX;
|
||
break;
|
||
|
||
case T_REGISTER_PREFIX_TYPE:
|
||
buf = REGISTER_PREFIX;
|
||
break;
|
||
|
||
case T_CONST:
|
||
buf = (char *) alloca (4 * sizeof (int));
|
||
sprintf (buf, "%d", hp->value.ival);
|
||
#ifdef STDC_0_IN_SYSTEM_HEADERS
|
||
if (ip->system_header_p
|
||
&& hp->length == 8 && bcmp (hp->name, "__STDC__", 8) == 0
|
||
&& ! cpp_lookup (pfile, (U_CHAR *) "__STRICT_ANSI__", -1, -1))
|
||
strcpy (buf, "0");
|
||
#endif
|
||
#if 0
|
||
if (pcp_inside_if && pcp_outfile)
|
||
/* Output a precondition for this macro use */
|
||
fprintf (pcp_outfile, "#define %s %d\n", hp->name, hp->value.ival);
|
||
#endif
|
||
break;
|
||
|
||
case T_SPECLINE:
|
||
{
|
||
long line = ip->lineno;
|
||
long col = ip->colno;
|
||
adjust_position (CPP_LINE_BASE (ip), ip->cur, &line, &col);
|
||
|
||
buf = (char *) alloca (10);
|
||
sprintf (buf, "%ld", line);
|
||
}
|
||
break;
|
||
|
||
case T_DATE:
|
||
case T_TIME:
|
||
buf = (char *) alloca (20);
|
||
timebuf = timestamp (pfile);
|
||
if (hp->type == T_DATE)
|
||
sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
|
||
timebuf->tm_mday, timebuf->tm_year + 1900);
|
||
else
|
||
sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
|
||
timebuf->tm_sec);
|
||
break;
|
||
|
||
case T_SPEC_DEFINED:
|
||
buf = " 0 "; /* Assume symbol is not defined */
|
||
ip = CPP_BUFFER (pfile);
|
||
SKIP_WHITE_SPACE (ip->cur);
|
||
if (*ip->cur == '(')
|
||
{
|
||
paren++;
|
||
ip->cur++; /* Skip over the paren */
|
||
SKIP_WHITE_SPACE (ip->cur);
|
||
}
|
||
|
||
if (!is_idstart[*ip->cur])
|
||
goto oops;
|
||
if (ip->cur[0] == 'L' && (ip->cur[1] == '\'' || ip->cur[1] == '"'))
|
||
goto oops;
|
||
if ((hp = cpp_lookup (pfile, ip->cur, -1, -1)))
|
||
{
|
||
#if 0
|
||
if (pcp_outfile && pcp_inside_if
|
||
&& (hp->type == T_CONST
|
||
|| (hp->type == T_MACRO && hp->value.defn->predefined)))
|
||
/* Output a precondition for this macro use. */
|
||
fprintf (pcp_outfile, "#define %s\n", hp->name);
|
||
#endif
|
||
buf = " 1 ";
|
||
}
|
||
#if 0
|
||
else
|
||
if (pcp_outfile && pcp_inside_if)
|
||
{
|
||
/* Output a precondition for this macro use */
|
||
U_CHAR *cp = ip->bufp;
|
||
fprintf (pcp_outfile, "#undef ");
|
||
while (is_idchar[*cp]) /* Ick! */
|
||
fputc (*cp++, pcp_outfile);
|
||
putc ('\n', pcp_outfile);
|
||
}
|
||
#endif
|
||
while (is_idchar[*ip->cur])
|
||
++ip->cur;
|
||
SKIP_WHITE_SPACE (ip->cur);
|
||
if (paren)
|
||
{
|
||
if (*ip->cur != ')')
|
||
goto oops;
|
||
++ip->cur;
|
||
}
|
||
break;
|
||
|
||
oops:
|
||
|
||
cpp_error (pfile, "`defined' without an identifier");
|
||
break;
|
||
|
||
default:
|
||
cpp_error (pfile, "cccp error: invalid special hash type"); /* time for gdb */
|
||
abort ();
|
||
}
|
||
len = strlen (buf);
|
||
CPP_RESERVE (pfile, len + 1);
|
||
CPP_PUTS_Q (pfile, buf, len);
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
|
||
return;
|
||
}
|
||
|
||
/* Write out a #define command for the special named MACRO_NAME
|
||
to PFILE's token_buffer. */
|
||
|
||
static void
|
||
dump_special_to_buffer (pfile, macro_name)
|
||
cpp_reader *pfile;
|
||
char *macro_name;
|
||
{
|
||
static char define_directive[] = "#define ";
|
||
int macro_name_length = strlen (macro_name);
|
||
output_line_command (pfile, 0, same_file);
|
||
CPP_RESERVE (pfile, sizeof(define_directive) + macro_name_length);
|
||
CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
|
||
CPP_PUTS_Q (pfile, macro_name, macro_name_length);
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
|
||
CPP_PUTC (pfile, '\n');
|
||
}
|
||
|
||
/* Initialize the built-in macros. */
|
||
|
||
static void
|
||
initialize_builtins (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
install ((U_CHAR *)"__LINE__", -1, T_SPECLINE, 0, 0, -1);
|
||
install ((U_CHAR *)"__DATE__", -1, T_DATE, 0, 0, -1);
|
||
install ((U_CHAR *)"__FILE__", -1, T_FILE, 0, 0, -1);
|
||
install ((U_CHAR *)"__BASE_FILE__", -1, T_BASE_FILE, 0, 0, -1);
|
||
install ((U_CHAR *)"__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, 0, 0, -1);
|
||
install ((U_CHAR *)"__VERSION__", -1, T_VERSION, 0, 0, -1);
|
||
#ifndef NO_BUILTIN_SIZE_TYPE
|
||
install ((U_CHAR *)"__SIZE_TYPE__", -1, T_SIZE_TYPE, 0, 0, -1);
|
||
#endif
|
||
#ifndef NO_BUILTIN_PTRDIFF_TYPE
|
||
install ((U_CHAR *)"__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, 0, 0, -1);
|
||
#endif
|
||
install ((U_CHAR *)"__WCHAR_TYPE__", -1, T_WCHAR_TYPE, 0, 0, -1);
|
||
install ((U_CHAR *)"__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE, 0, 0, -1);
|
||
install ((U_CHAR *)"__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, 0, 0, -1);
|
||
install ((U_CHAR *)"__TIME__", -1, T_TIME, 0, 0, -1);
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
install ((U_CHAR *)"__STDC__", -1, T_CONST, STDC_VALUE, 0, -1);
|
||
if (CPP_OPTIONS (pfile)->objc)
|
||
install ((U_CHAR *)"__OBJC__", -1, T_CONST, 1, 0, -1);
|
||
/* This is supplied using a -D by the compiler driver
|
||
so that it is present only when truly compiling with GNU C. */
|
||
/* install ("__GNUC__", -1, T_CONST, 2, 0, -1); */
|
||
|
||
if (CPP_OPTIONS (pfile)->debug_output)
|
||
{
|
||
dump_special_to_buffer (pfile, "__BASE_FILE__");
|
||
dump_special_to_buffer (pfile, "__VERSION__");
|
||
#ifndef NO_BUILTIN_SIZE_TYPE
|
||
dump_special_to_buffer (pfile, "__SIZE_TYPE__");
|
||
#endif
|
||
#ifndef NO_BUILTIN_PTRDIFF_TYPE
|
||
dump_special_to_buffer (pfile, "__PTRDIFF_TYPE__");
|
||
#endif
|
||
dump_special_to_buffer (pfile, "__WCHAR_TYPE__");
|
||
dump_special_to_buffer (pfile, "__DATE__");
|
||
dump_special_to_buffer (pfile, "__TIME__");
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
dump_special_to_buffer (pfile, "__STDC__");
|
||
if (CPP_OPTIONS (pfile)->objc)
|
||
dump_special_to_buffer (pfile, "__OBJC__");
|
||
}
|
||
}
|
||
|
||
/* Return 1 iff a token ending in C1 followed directly by a token C2
|
||
could cause mis-tokenization. */
|
||
|
||
static int
|
||
unsafe_chars (c1, c2)
|
||
int c1, c2;
|
||
{
|
||
switch (c1)
|
||
{
|
||
case '+': case '-':
|
||
if (c2 == c1 || c2 == '=')
|
||
return 1;
|
||
goto letter;
|
||
case '.':
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9':
|
||
case 'e': case 'E': case 'p': case 'P':
|
||
if (c2 == '-' || c2 == '+')
|
||
return 1; /* could extend a pre-processing number */
|
||
goto letter;
|
||
case 'L':
|
||
if (c2 == '\'' || c2 == '\"')
|
||
return 1; /* Could turn into L"xxx" or L'xxx'. */
|
||
goto letter;
|
||
letter:
|
||
case '_':
|
||
case 'a': case 'b': case 'c': case 'd': case 'f':
|
||
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
||
case 'm': case 'n': case 'o': case 'q': case 'r':
|
||
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
||
case 'y': case 'z':
|
||
case 'A': case 'B': case 'C': case 'D': case 'F':
|
||
case 'G': case 'H': case 'I': case 'J': case 'K':
|
||
case 'M': case 'N': case 'O': case 'Q': case 'R':
|
||
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
||
case 'Y': case 'Z':
|
||
/* We're in the middle of either a name or a pre-processing number. */
|
||
return (is_idchar[c2] || c2 == '.');
|
||
case '<': case '>': case '!': case '%': case '#': case ':':
|
||
case '^': case '&': case '|': case '*': case '/': case '=':
|
||
return (c2 == c1 || c2 == '=');
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Expand a macro call.
|
||
HP points to the symbol that is the macro being called.
|
||
Put the result of expansion onto the input stack
|
||
so that subsequent input by our caller will use it.
|
||
|
||
If macro wants arguments, caller has already verified that
|
||
an argument list follows; arguments come from the input stack. */
|
||
|
||
static void
|
||
macroexpand (pfile, hp)
|
||
cpp_reader *pfile;
|
||
HASHNODE *hp;
|
||
{
|
||
int nargs;
|
||
DEFINITION *defn = hp->value.defn;
|
||
register U_CHAR *xbuf;
|
||
long start_line, start_column;
|
||
int xbuf_len;
|
||
struct argdata *args;
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
#if 0
|
||
int start_line = instack[indepth].lineno;
|
||
#endif
|
||
int rest_args, rest_zero;
|
||
register int i;
|
||
|
||
#if 0
|
||
CHECK_DEPTH (return;);
|
||
#endif
|
||
|
||
#if 0
|
||
/* This macro is being used inside a #if, which means it must be */
|
||
/* recorded as a precondition. */
|
||
if (pcp_inside_if && pcp_outfile && defn->predefined)
|
||
dump_single_macro (hp, pcp_outfile);
|
||
#endif
|
||
|
||
pfile->output_escapes++;
|
||
cpp_buf_line_and_col (cpp_file_buffer (pfile), &start_line, &start_column);
|
||
|
||
nargs = defn->nargs;
|
||
|
||
if (nargs >= 0)
|
||
{
|
||
enum cpp_token token;
|
||
|
||
args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
|
||
|
||
for (i = 0; i < nargs; i++)
|
||
{
|
||
args[i].raw = args[i].expanded = 0;
|
||
args[i].raw_length = 0;
|
||
args[i].expand_length = args[i].stringified_length = -1;
|
||
args[i].use_count = 0;
|
||
}
|
||
|
||
/* Parse all the macro args that are supplied. I counts them.
|
||
The first NARGS args are stored in ARGS.
|
||
The rest are discarded. If rest_args is set then we assume
|
||
macarg absorbed the rest of the args. */
|
||
i = 0;
|
||
rest_args = 0;
|
||
rest_args = 0;
|
||
FORWARD(1); /* Discard the open-parenthesis before the first arg. */
|
||
do
|
||
{
|
||
if (rest_args)
|
||
continue;
|
||
if (i < nargs || (nargs == 0 && i == 0))
|
||
{
|
||
/* if we are working on last arg which absorbs rest of args... */
|
||
if (i == nargs - 1 && defn->rest_args)
|
||
rest_args = 1;
|
||
args[i].raw = CPP_WRITTEN (pfile);
|
||
token = macarg (pfile, rest_args);
|
||
args[i].raw_length = CPP_WRITTEN (pfile) - args[i].raw;
|
||
args[i].newlines = 0; /* FIXME */
|
||
}
|
||
else
|
||
token = macarg (pfile, 0);
|
||
if (token == CPP_EOF || token == CPP_POP)
|
||
{
|
||
cpp_error_with_line (pfile, start_line, start_column,
|
||
"unterminated macro call");
|
||
return;
|
||
}
|
||
i++;
|
||
} while (token == CPP_COMMA);
|
||
|
||
/* If we got one arg but it was just whitespace, call that 0 args. */
|
||
if (i == 1)
|
||
{
|
||
register U_CHAR *bp = ARG_BASE + args[0].raw;
|
||
register U_CHAR *lim = bp + args[0].raw_length;
|
||
/* cpp.texi says for foo ( ) we provide one argument.
|
||
However, if foo wants just 0 arguments, treat this as 0. */
|
||
if (nargs == 0)
|
||
while (bp != lim && is_space[*bp]) bp++;
|
||
if (bp == lim)
|
||
i = 0;
|
||
}
|
||
|
||
/* Don't output an error message if we have already output one for
|
||
a parse error above. */
|
||
rest_zero = 0;
|
||
if (nargs == 0 && i > 0)
|
||
{
|
||
cpp_error (pfile, "arguments given to macro `%s'", hp->name);
|
||
}
|
||
else if (i < nargs)
|
||
{
|
||
/* traditional C allows foo() if foo wants one argument. */
|
||
if (nargs == 1 && i == 0 && CPP_TRADITIONAL (pfile))
|
||
;
|
||
/* the rest args token is allowed to absorb 0 tokens */
|
||
else if (i == nargs - 1 && defn->rest_args)
|
||
rest_zero = 1;
|
||
else if (i == 0)
|
||
cpp_error (pfile, "macro `%s' used without args", hp->name);
|
||
else if (i == 1)
|
||
cpp_error (pfile, "macro `%s' used with just one arg", hp->name);
|
||
else
|
||
cpp_error (pfile, "macro `%s' used with only %d args",
|
||
hp->name, i);
|
||
}
|
||
else if (i > nargs)
|
||
{
|
||
cpp_error (pfile,
|
||
"macro `%s' used with too many (%d) args", hp->name, i);
|
||
}
|
||
}
|
||
|
||
/* If macro wants zero args, we parsed the arglist for checking only.
|
||
Read directly from the macro definition. */
|
||
if (nargs <= 0)
|
||
{
|
||
xbuf = defn->expansion;
|
||
xbuf_len = defn->length;
|
||
}
|
||
else
|
||
{
|
||
register U_CHAR *exp = defn->expansion;
|
||
register int offset; /* offset in expansion,
|
||
copied a piece at a time */
|
||
register int totlen; /* total amount of exp buffer filled so far */
|
||
|
||
register struct reflist *ap, *last_ap;
|
||
|
||
/* Macro really takes args. Compute the expansion of this call. */
|
||
|
||
/* Compute length in characters of the macro's expansion.
|
||
Also count number of times each arg is used. */
|
||
xbuf_len = defn->length;
|
||
for (ap = defn->pattern; ap != NULL; ap = ap->next)
|
||
{
|
||
if (ap->stringify)
|
||
{
|
||
register struct argdata *arg = &args[ap->argno];
|
||
/* Stringify if it hasn't already been */
|
||
if (arg->stringified_length < 0)
|
||
{
|
||
int arglen = arg->raw_length;
|
||
int escaped = 0;
|
||
int in_string = 0;
|
||
int c;
|
||
/* Initially need_space is -1. Otherwise, 1 means the
|
||
previous character was a space, but we suppressed it;
|
||
0 means the previous character was a non-space. */
|
||
int need_space = -1;
|
||
i = 0;
|
||
arg->stringified = CPP_WRITTEN (pfile);
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
CPP_PUTC (pfile, '\"'); /* insert beginning quote */
|
||
for (; i < arglen; i++)
|
||
{
|
||
c = (ARG_BASE + arg->raw)[i];
|
||
|
||
if (! in_string)
|
||
{
|
||
/* Internal sequences of whitespace are replaced by
|
||
one space except within an string or char token.*/
|
||
if (is_space[c])
|
||
{
|
||
if (CPP_WRITTEN (pfile) > arg->stringified
|
||
&& (CPP_PWRITTEN (pfile))[-1] == '@')
|
||
{
|
||
/* "@ " escape markers are removed */
|
||
CPP_ADJUST_WRITTEN (pfile, -1);
|
||
continue;
|
||
}
|
||
if (need_space == 0)
|
||
need_space = 1;
|
||
continue;
|
||
}
|
||
else if (need_space > 0)
|
||
CPP_PUTC (pfile, ' ');
|
||
need_space = 0;
|
||
}
|
||
|
||
if (escaped)
|
||
escaped = 0;
|
||
else
|
||
{
|
||
if (c == '\\')
|
||
escaped = 1;
|
||
if (in_string)
|
||
{
|
||
if (c == in_string)
|
||
in_string = 0;
|
||
}
|
||
else if (c == '\"' || c == '\'')
|
||
in_string = c;
|
||
}
|
||
|
||
/* Escape these chars */
|
||
if (c == '\"' || (in_string && c == '\\'))
|
||
CPP_PUTC (pfile, '\\');
|
||
if (ISPRINT (c))
|
||
CPP_PUTC (pfile, c);
|
||
else
|
||
{
|
||
CPP_RESERVE (pfile, 4);
|
||
sprintf ((char *)CPP_PWRITTEN (pfile), "\\%03o",
|
||
(unsigned int) c);
|
||
CPP_ADJUST_WRITTEN (pfile, 4);
|
||
}
|
||
}
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
CPP_PUTC (pfile, '\"'); /* insert ending quote */
|
||
arg->stringified_length
|
||
= CPP_WRITTEN (pfile) - arg->stringified;
|
||
}
|
||
xbuf_len += args[ap->argno].stringified_length;
|
||
}
|
||
else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL (pfile))
|
||
/* Add 4 for two newline-space markers to prevent
|
||
token concatenation. */
|
||
xbuf_len += args[ap->argno].raw_length + 4;
|
||
else
|
||
{
|
||
/* We have an ordinary (expanded) occurrence of the arg.
|
||
So compute its expansion, if we have not already. */
|
||
if (args[ap->argno].expand_length < 0)
|
||
{
|
||
args[ap->argno].expanded = CPP_WRITTEN (pfile);
|
||
cpp_expand_to_buffer (pfile,
|
||
ARG_BASE + args[ap->argno].raw,
|
||
args[ap->argno].raw_length);
|
||
|
||
args[ap->argno].expand_length
|
||
= CPP_WRITTEN (pfile) - args[ap->argno].expanded;
|
||
}
|
||
|
||
/* Add 4 for two newline-space markers to prevent
|
||
token concatenation. */
|
||
xbuf_len += args[ap->argno].expand_length + 4;
|
||
}
|
||
if (args[ap->argno].use_count < 10)
|
||
args[ap->argno].use_count++;
|
||
}
|
||
|
||
xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
|
||
|
||
/* Generate in XBUF the complete expansion
|
||
with arguments substituted in.
|
||
TOTLEN is the total size generated so far.
|
||
OFFSET is the index in the definition
|
||
of where we are copying from. */
|
||
offset = totlen = 0;
|
||
for (last_ap = NULL, ap = defn->pattern; ap != NULL;
|
||
last_ap = ap, ap = ap->next)
|
||
{
|
||
register struct argdata *arg = &args[ap->argno];
|
||
int count_before = totlen;
|
||
|
||
/* Add chars to XBUF. */
|
||
for (i = 0; i < ap->nchars; i++, offset++)
|
||
xbuf[totlen++] = exp[offset];
|
||
|
||
/* If followed by an empty rest arg with concatenation,
|
||
delete the last run of nonwhite chars. */
|
||
if (rest_zero && totlen > count_before
|
||
&& ((ap->rest_args && ap->raw_before)
|
||
|| (last_ap != NULL && last_ap->rest_args
|
||
&& last_ap->raw_after)))
|
||
{
|
||
/* Delete final whitespace. */
|
||
while (totlen > count_before && is_space[xbuf[totlen - 1]])
|
||
totlen--;
|
||
|
||
/* Delete the nonwhites before them. */
|
||
while (totlen > count_before && ! is_space[xbuf[totlen - 1]])
|
||
totlen--;
|
||
}
|
||
|
||
if (ap->stringify != 0)
|
||
{
|
||
bcopy (ARG_BASE + arg->stringified,
|
||
xbuf + totlen, arg->stringified_length);
|
||
totlen += arg->stringified_length;
|
||
}
|
||
else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL (pfile))
|
||
{
|
||
U_CHAR *p1 = ARG_BASE + arg->raw;
|
||
U_CHAR *l1 = p1 + arg->raw_length;
|
||
if (ap->raw_before)
|
||
{
|
||
while (p1 != l1 && is_space[*p1]) p1++;
|
||
while (p1 != l1 && is_idchar[*p1])
|
||
xbuf[totlen++] = *p1++;
|
||
/* Delete any no-reexpansion marker that follows
|
||
an identifier at the beginning of the argument
|
||
if the argument is concatenated with what precedes it. */
|
||
if (p1[0] == '@' && p1[1] == '-')
|
||
p1 += 2;
|
||
}
|
||
if (ap->raw_after)
|
||
{
|
||
/* Arg is concatenated after: delete trailing whitespace,
|
||
whitespace markers, and no-reexpansion markers. */
|
||
while (p1 != l1)
|
||
{
|
||
if (is_space[l1[-1]]) l1--;
|
||
else if (l1[-1] == '-')
|
||
{
|
||
U_CHAR *p2 = l1 - 1;
|
||
/* If a `-' is preceded by an odd number of newlines then it
|
||
and the last newline are a no-reexpansion marker. */
|
||
while (p2 != p1 && p2[-1] == '\n') p2--;
|
||
if ((l1 - 1 - p2) & 1) {
|
||
l1 -= 2;
|
||
}
|
||
else break;
|
||
}
|
||
else break;
|
||
}
|
||
}
|
||
|
||
bcopy (p1, xbuf + totlen, l1 - p1);
|
||
totlen += l1 - p1;
|
||
}
|
||
else
|
||
{
|
||
U_CHAR *expanded = ARG_BASE + arg->expanded;
|
||
if (!ap->raw_before && totlen > 0 && arg->expand_length
|
||
&& !CPP_TRADITIONAL(pfile)
|
||
&& unsafe_chars (xbuf[totlen-1], expanded[0]))
|
||
{
|
||
xbuf[totlen++] = '@';
|
||
xbuf[totlen++] = ' ';
|
||
}
|
||
|
||
bcopy (expanded, xbuf + totlen, arg->expand_length);
|
||
totlen += arg->expand_length;
|
||
|
||
if (!ap->raw_after && totlen > 0 && offset < defn->length
|
||
&& !CPP_TRADITIONAL(pfile)
|
||
&& unsafe_chars (xbuf[totlen-1], exp[offset]))
|
||
{
|
||
xbuf[totlen++] = '@';
|
||
xbuf[totlen++] = ' ';
|
||
}
|
||
|
||
/* If a macro argument with newlines is used multiple times,
|
||
then only expand the newlines once. This avoids creating
|
||
output lines which don't correspond to any input line,
|
||
which confuses gdb and gcov. */
|
||
if (arg->use_count > 1 && arg->newlines > 0)
|
||
{
|
||
/* Don't bother doing change_newlines for subsequent
|
||
uses of arg. */
|
||
arg->use_count = 1;
|
||
arg->expand_length
|
||
= change_newlines (expanded, arg->expand_length);
|
||
}
|
||
}
|
||
|
||
if (totlen > xbuf_len)
|
||
abort ();
|
||
}
|
||
|
||
/* if there is anything left of the definition
|
||
after handling the arg list, copy that in too. */
|
||
|
||
for (i = offset; i < defn->length; i++)
|
||
{
|
||
/* if we've reached the end of the macro */
|
||
if (exp[i] == ')')
|
||
rest_zero = 0;
|
||
if (! (rest_zero && last_ap != NULL && last_ap->rest_args
|
||
&& last_ap->raw_after))
|
||
xbuf[totlen++] = exp[i];
|
||
}
|
||
|
||
xbuf[totlen] = 0;
|
||
xbuf_len = totlen;
|
||
|
||
}
|
||
|
||
pfile->output_escapes--;
|
||
|
||
/* Now put the expansion on the input stack
|
||
so our caller will commence reading from it. */
|
||
push_macro_expansion (pfile, xbuf, xbuf_len, hp);
|
||
CPP_BUFFER (pfile)->has_escapes = 1;
|
||
|
||
/* Pop the space we've used in the token_buffer for argument expansion. */
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
|
||
/* Recursive macro use sometimes works traditionally.
|
||
#define foo(x,y) bar (x (y,0), y)
|
||
foo (foo, baz) */
|
||
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
hp->type = T_DISABLED;
|
||
}
|
||
|
||
static void
|
||
push_macro_expansion (pfile, xbuf, xbuf_len, hp)
|
||
cpp_reader *pfile;
|
||
register U_CHAR *xbuf;
|
||
int xbuf_len;
|
||
HASHNODE *hp;
|
||
{
|
||
register cpp_buffer *mbuf = cpp_push_buffer (pfile, xbuf, xbuf_len);
|
||
if (mbuf == NULL)
|
||
return;
|
||
mbuf->cleanup = macro_cleanup;
|
||
mbuf->data = hp;
|
||
|
||
/* The first chars of the expansion should be a "@ " added by
|
||
collect_expansion. This is to prevent accidental token-pasting
|
||
between the text preceding the macro invocation, and the macro
|
||
expansion text.
|
||
|
||
We would like to avoid adding unneeded spaces (for the sake of
|
||
tools that use cpp, such as imake). In some common cases we can
|
||
tell that it is safe to omit the space.
|
||
|
||
The character before the macro invocation cannot have been an
|
||
idchar (or else it would have been pasted with the idchars of
|
||
the macro name). Therefore, if the first non-space character
|
||
of the expansion is an idchar, we do not need the extra space
|
||
to prevent token pasting.
|
||
|
||
Also, we don't need the extra space if the first char is '(',
|
||
or some other (less common) characters. */
|
||
|
||
if (xbuf[0] == '@' && xbuf[1] == ' '
|
||
&& (is_idchar[xbuf[2]] || xbuf[2] == '(' || xbuf[2] == '\''
|
||
|| xbuf[2] == '\"'))
|
||
mbuf->cur += 2;
|
||
}
|
||
|
||
/* Like cpp_get_token, except that it does not read past end-of-line.
|
||
Also, horizontal space is skipped, and macros are popped. */
|
||
|
||
static enum cpp_token
|
||
get_directive_token (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
for (;;)
|
||
{
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
enum cpp_token token;
|
||
cpp_skip_hspace (pfile);
|
||
if (PEEKC () == '\n')
|
||
return CPP_VSPACE;
|
||
token = cpp_get_token (pfile);
|
||
switch (token)
|
||
{
|
||
case CPP_POP:
|
||
if (! CPP_IS_MACRO_BUFFER (CPP_BUFFER (pfile)))
|
||
return token;
|
||
/* ... else fall though ... */
|
||
case CPP_HSPACE: case CPP_COMMENT:
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
break;
|
||
default:
|
||
return token;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Handle #include and #import.
|
||
This function expects to see "fname" or <fname> on the input.
|
||
|
||
The input is normally in part of the output_buffer following
|
||
CPP_WRITTEN, and will get overwritten by output_line_command.
|
||
I.e. in input file specification has been popped by handle_directive.
|
||
This is safe. */
|
||
|
||
static int
|
||
do_include (pfile, keyword, unused1, unused2)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword;
|
||
U_CHAR *unused1 ATTRIBUTE_UNUSED, *unused2 ATTRIBUTE_UNUSED;
|
||
{
|
||
int importing = (keyword->type == T_IMPORT);
|
||
int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
|
||
char *fname; /* Dynamically allocated fname buffer */
|
||
char *pcftry;
|
||
U_CHAR *fbeg, *fend; /* Beginning and end of fname */
|
||
enum cpp_token token;
|
||
|
||
/* Chain of dirs to search */
|
||
struct file_name_list *search_start = CPP_OPTIONS (pfile)->include;
|
||
struct file_name_list dsp[1]; /* First in chain, if #include "..." */
|
||
struct file_name_list *searchptr = 0;
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
|
||
int flen;
|
||
|
||
int f; /* file number */
|
||
|
||
int angle_brackets = 0; /* 0 for "...", 1 for <...> */
|
||
char *pcfbuf;
|
||
#if 0
|
||
int pcf = -1;
|
||
char *pcfbuflimit;
|
||
#endif
|
||
int pcfnum;
|
||
f= -1; /* JF we iz paranoid! */
|
||
|
||
if (CPP_PEDANTIC (pfile) && !CPP_BUFFER (pfile)->system_header_p)
|
||
{
|
||
if (importing)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#import'");
|
||
if (skip_dirs)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#include_next'");
|
||
}
|
||
|
||
if (importing && CPP_OPTIONS (pfile)->warn_import
|
||
&& !CPP_OPTIONS (pfile)->inhibit_warnings
|
||
&& !CPP_BUFFER (pfile)->system_header_p && !pfile->import_warning)
|
||
{
|
||
pfile->import_warning = 1;
|
||
cpp_warning (pfile, "using `#import' is not recommended");
|
||
fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
|
||
fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
|
||
fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
|
||
fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
|
||
fprintf (stderr, " #define _FOO_H_INCLUDED\n");
|
||
fprintf (stderr, " ... <real contents of file> ...\n");
|
||
fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
|
||
fprintf (stderr, "Then users can use `#include' any number of times.\n");
|
||
fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
|
||
fprintf (stderr, "when it is equipped with such a conditional.\n");
|
||
}
|
||
|
||
pfile->parsing_include_directive++;
|
||
token = get_directive_token (pfile);
|
||
pfile->parsing_include_directive--;
|
||
|
||
if (token == CPP_STRING)
|
||
{
|
||
/* FIXME - check no trailing garbage */
|
||
fbeg = pfile->token_buffer + old_written + 1;
|
||
fend = CPP_PWRITTEN (pfile) - 1;
|
||
if (fbeg[-1] == '<')
|
||
{
|
||
angle_brackets = 1;
|
||
/* If -I-, start with the first -I dir after the -I-. */
|
||
if (CPP_OPTIONS (pfile)->first_bracket_include)
|
||
search_start = CPP_OPTIONS (pfile)->first_bracket_include;
|
||
}
|
||
/* If -I- was specified, don't search current dir, only spec'd ones. */
|
||
else if (! CPP_OPTIONS (pfile)->ignore_srcdir)
|
||
{
|
||
cpp_buffer *fp = CPP_BUFFER (pfile);
|
||
/* We have "filename". Figure out directory this source
|
||
file is coming from and put it on the front of the list. */
|
||
|
||
for ( ; fp != CPP_NULL_BUFFER (pfile); fp = CPP_PREV_BUFFER (fp))
|
||
{
|
||
int n;
|
||
char *ep,*nam;
|
||
|
||
if ((nam = fp->nominal_fname) != NULL)
|
||
{
|
||
/* Found a named file. Figure out dir of the file,
|
||
and put it in front of the search list. */
|
||
dsp[0].next = search_start;
|
||
search_start = dsp;
|
||
#ifndef VMS
|
||
ep = rindex (nam, '/');
|
||
#else /* VMS */
|
||
ep = rindex (nam, ']');
|
||
if (ep == NULL) ep = rindex (nam, '>');
|
||
if (ep == NULL) ep = rindex (nam, ':');
|
||
if (ep != NULL) ep++;
|
||
#endif /* VMS */
|
||
if (ep != NULL)
|
||
{
|
||
n = ep - nam;
|
||
dsp[0].fname = (char *) alloca (n + 1);
|
||
strncpy (dsp[0].fname, nam, n);
|
||
dsp[0].fname[n] = '\0';
|
||
if (n + INCLUDE_LEN_FUDGE > pfile->max_include_len)
|
||
pfile->max_include_len = n + INCLUDE_LEN_FUDGE;
|
||
}
|
||
else
|
||
{
|
||
dsp[0].fname = 0; /* Current directory */
|
||
}
|
||
dsp[0].got_name_map = 0;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
#ifdef VMS
|
||
else if (token == CPP_NAME)
|
||
{
|
||
/*
|
||
* Support '#include xyz' like VAX-C to allow for easy use of all the
|
||
* decwindow include files. It defaults to '#include <xyz.h>' (so the
|
||
* code from case '<' is repeated here) and generates a warning.
|
||
*/
|
||
cpp_warning (pfile,
|
||
"VAX-C-style include specification found, use '#include <filename.h>' !");
|
||
angle_brackets = 1;
|
||
/* If -I-, start with the first -I dir after the -I-. */
|
||
if (CPP_OPTIONS (pfile)->first_bracket_include)
|
||
search_start = CPP_OPTIONS (pfile)->first_bracket_include;
|
||
fbeg = pfile->token_buffer + old_written;
|
||
fend = CPP_PWRITTEN (pfile);
|
||
}
|
||
#endif
|
||
else
|
||
{
|
||
cpp_error (pfile,
|
||
"`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
skip_rest_of_line (pfile);
|
||
return 0;
|
||
}
|
||
|
||
*fend = 0;
|
||
|
||
token = get_directive_token (pfile);
|
||
if (token != CPP_VSPACE)
|
||
{
|
||
cpp_error (pfile, "junk at end of `#include'");
|
||
while (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP)
|
||
token = get_directive_token (pfile);
|
||
}
|
||
|
||
/* For #include_next, skip in the search path
|
||
past the dir in which the containing file was found. */
|
||
if (skip_dirs)
|
||
{
|
||
cpp_buffer *fp = CPP_BUFFER (pfile);
|
||
for (; fp != CPP_NULL_BUFFER (pfile); fp = CPP_PREV_BUFFER (fp))
|
||
if (fp->fname != NULL)
|
||
{
|
||
/* fp->dir is null if the containing file was specified with
|
||
an absolute file name. In that case, don't skip anything. */
|
||
if (fp->dir == SELF_DIR_DUMMY)
|
||
search_start = CPP_OPTIONS (pfile)->include;
|
||
else if (fp->dir)
|
||
search_start = fp->dir->next;
|
||
break;
|
||
}
|
||
}
|
||
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
|
||
flen = fend - fbeg;
|
||
|
||
if (flen == 0)
|
||
{
|
||
cpp_error (pfile, "empty file name in `#%s'", keyword->name);
|
||
return 0;
|
||
}
|
||
|
||
/* Allocate this permanently, because it gets stored in the definitions
|
||
of macros. */
|
||
fname = (char *) xmalloc (pfile->max_include_len + flen + 4);
|
||
/* + 2 above for slash and terminating null. */
|
||
/* + 2 added for '.h' on VMS (to support '#include filename') */
|
||
|
||
/* If specified file name is absolute, just open it. */
|
||
|
||
if (*fbeg == '/') {
|
||
strncpy (fname, fbeg, flen);
|
||
fname[flen] = 0;
|
||
if (redundant_include_p (pfile, fname))
|
||
return 0;
|
||
if (importing)
|
||
f = lookup_import (pfile, fname, NULL_PTR);
|
||
else
|
||
f = open_include_file (pfile, fname, NULL_PTR);
|
||
if (f == -2)
|
||
return 0; /* Already included this file */
|
||
} else {
|
||
/* Search directory path, trying to open the file.
|
||
Copy each filename tried into FNAME. */
|
||
|
||
for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
|
||
if (searchptr->fname) {
|
||
/* The empty string in a search path is ignored.
|
||
This makes it possible to turn off entirely
|
||
a standard piece of the list. */
|
||
if (searchptr->fname[0] == 0)
|
||
continue;
|
||
strcpy (fname, searchptr->fname);
|
||
strcat (fname, "/");
|
||
fname[strlen (fname) + flen] = 0;
|
||
} else {
|
||
fname[0] = 0;
|
||
}
|
||
strncat (fname, fbeg, flen);
|
||
#ifdef VMS
|
||
/* Change this 1/2 Unix 1/2 VMS file specification into a
|
||
full VMS file specification */
|
||
if (searchptr->fname && (searchptr->fname[0] != 0)) {
|
||
/* Fix up the filename */
|
||
hack_vms_include_specification (fname);
|
||
} else {
|
||
/* This is a normal VMS filespec, so use it unchanged. */
|
||
strncpy (fname, fbeg, flen);
|
||
fname[flen] = 0;
|
||
/* if it's '#include filename', add the missing .h */
|
||
if (index(fname,'.')==NULL) {
|
||
strcat (fname, ".h");
|
||
}
|
||
}
|
||
#endif /* VMS */
|
||
/* ??? There are currently 3 separate mechanisms for avoiding processing
|
||
of redundant include files: #import, #pragma once, and
|
||
redundant_include_p. It would be nice if they were unified. */
|
||
if (redundant_include_p (pfile, fname))
|
||
return 0;
|
||
if (importing)
|
||
f = lookup_import (pfile, fname, searchptr);
|
||
else
|
||
f = open_include_file (pfile, fname, searchptr);
|
||
if (f == -2)
|
||
return 0; /* Already included this file */
|
||
#ifdef EACCES
|
||
else if (f == -1 && errno == EACCES)
|
||
cpp_warning (pfile, "Header file %s exists, but is not readable",
|
||
fname);
|
||
#endif
|
||
if (f >= 0)
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (f < 0)
|
||
{
|
||
/* A file that was not found. */
|
||
strncpy (fname, fbeg, flen);
|
||
fname[flen] = 0;
|
||
/* If generating dependencies and -MG was specified, we assume missing
|
||
files are leaf files, living in the same directory as the source file
|
||
or other similar place; these missing files may be generated from
|
||
other files and may not exist yet (eg: y.tab.h). */
|
||
|
||
if (CPP_OPTIONS(pfile)->print_deps_missing_files
|
||
&& CPP_PRINT_DEPS (pfile)
|
||
> (angle_brackets || (pfile->system_include_depth > 0)))
|
||
{
|
||
/* If it was requested as a system header file,
|
||
then assume it belongs in the first place to look for such. */
|
||
if (angle_brackets)
|
||
{
|
||
for (searchptr = search_start; searchptr;
|
||
searchptr = searchptr->next)
|
||
{
|
||
if (searchptr->fname)
|
||
{
|
||
char *p;
|
||
|
||
if (searchptr->fname[0] == 0)
|
||
continue;
|
||
p = (char *) alloca (strlen (searchptr->fname)
|
||
+ strlen (fname) + 2);
|
||
strcpy (p, searchptr->fname);
|
||
strcat (p, "/");
|
||
strcat (p, fname);
|
||
deps_output (pfile, p, ' ');
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, omit the directory, as if the file existed
|
||
in the directory with the source. */
|
||
deps_output (pfile, fname, ' ');
|
||
}
|
||
}
|
||
/* If -M was specified, and this header file won't be added to the
|
||
dependency list, then don't count this as an error, because we can
|
||
still produce correct output. Otherwise, we can't produce correct
|
||
output, because there may be dependencies we need inside the missing
|
||
file, and we don't know what directory this missing file exists in.*/
|
||
else if (CPP_PRINT_DEPS (pfile)
|
||
&& (CPP_PRINT_DEPS (pfile)
|
||
<= (angle_brackets || (pfile->system_include_depth > 0))))
|
||
cpp_warning (pfile, "No include path in which to find %s", fname);
|
||
else if (search_start)
|
||
cpp_error_from_errno (pfile, fname);
|
||
else
|
||
cpp_error (pfile, "No include path in which to find %s", fname);
|
||
}
|
||
else {
|
||
/* Check to see if this include file is a once-only include file.
|
||
If so, give up. */
|
||
|
||
struct file_name_list *ptr;
|
||
|
||
for (ptr = pfile->dont_repeat_files; ptr; ptr = ptr->next) {
|
||
if (!strcmp (ptr->fname, fname)) {
|
||
close (f);
|
||
return 0; /* This file was once'd. */
|
||
}
|
||
}
|
||
|
||
for (ptr = pfile->all_include_files; ptr; ptr = ptr->next) {
|
||
if (!strcmp (ptr->fname, fname))
|
||
break; /* This file was included before. */
|
||
}
|
||
|
||
if (ptr == 0) {
|
||
/* This is the first time for this file. */
|
||
/* Add it to list of files included. */
|
||
|
||
ptr = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
|
||
ptr->control_macro = 0;
|
||
ptr->c_system_include_path = 0;
|
||
ptr->next = pfile->all_include_files;
|
||
pfile->all_include_files = ptr;
|
||
ptr->fname = savestring (fname);
|
||
ptr->got_name_map = 0;
|
||
|
||
/* For -M, add this file to the dependencies. */
|
||
if (CPP_PRINT_DEPS (pfile)
|
||
> (angle_brackets || (pfile->system_include_depth > 0)))
|
||
deps_output (pfile, fname, ' ');
|
||
}
|
||
|
||
/* Handle -H option. */
|
||
if (CPP_OPTIONS(pfile)->print_include_names)
|
||
{
|
||
cpp_buffer *buf = CPP_BUFFER (pfile);
|
||
while ((buf = CPP_PREV_BUFFER (buf)) != CPP_NULL_BUFFER (pfile))
|
||
putc ('.', stderr);
|
||
fprintf (stderr, "%s\n", fname);
|
||
}
|
||
|
||
if (angle_brackets)
|
||
pfile->system_include_depth++;
|
||
|
||
/* Actually process the file. */
|
||
|
||
/* Record file on "seen" list for #import. */
|
||
add_import (pfile, f, fname);
|
||
|
||
pcftry = (char *) alloca (strlen (fname) + 30);
|
||
pcfbuf = 0;
|
||
pcfnum = 0;
|
||
|
||
#if 0
|
||
if (!no_precomp)
|
||
{
|
||
struct stat stat_f;
|
||
|
||
fstat (f, &stat_f);
|
||
|
||
do {
|
||
sprintf (pcftry, "%s%d", fname, pcfnum++);
|
||
|
||
pcf = open (pcftry, O_RDONLY, 0666);
|
||
if (pcf != -1)
|
||
{
|
||
struct stat s;
|
||
|
||
fstat (pcf, &s);
|
||
if (bcmp ((char *) &stat_f.st_ino, (char *) &s.st_ino,
|
||
sizeof (s.st_ino))
|
||
|| stat_f.st_dev != s.st_dev)
|
||
{
|
||
pcfbuf = check_precompiled (pcf, fname, &pcfbuflimit);
|
||
/* Don't need it any more. */
|
||
close (pcf);
|
||
}
|
||
else
|
||
{
|
||
/* Don't need it at all. */
|
||
close (pcf);
|
||
break;
|
||
}
|
||
}
|
||
} while (pcf != -1 && !pcfbuf);
|
||
}
|
||
#endif
|
||
|
||
/* Actually process the file */
|
||
if (cpp_push_buffer (pfile, NULL, 0) == NULL)
|
||
return 0;
|
||
if (finclude (pfile, f, fname, is_system_include (pfile, fname),
|
||
searchptr != dsp ? searchptr : SELF_DIR_DUMMY))
|
||
{
|
||
output_line_command (pfile, 0, enter_file);
|
||
pfile->only_seen_white = 2;
|
||
}
|
||
|
||
if (angle_brackets)
|
||
pfile->system_include_depth--;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Return nonzero if there is no need to include file NAME
|
||
because it has already been included and it contains a conditional
|
||
to make a repeated include do nothing. */
|
||
|
||
static int
|
||
redundant_include_p (pfile, name)
|
||
cpp_reader *pfile;
|
||
char *name;
|
||
{
|
||
struct file_name_list *l = pfile->all_include_files;
|
||
for (; l; l = l->next)
|
||
if (! strcmp (name, l->fname)
|
||
&& l->control_macro
|
||
&& cpp_lookup (pfile, l->control_macro, -1, -1))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
/* Return nonzero if the given FILENAME is an absolute pathname which
|
||
designates a file within one of the known "system" include file
|
||
directories. We assume here that if the given FILENAME looks like
|
||
it is the name of a file which resides either directly in a "system"
|
||
include file directory, or within any subdirectory thereof, then the
|
||
given file must be a "system" include file. This function tells us
|
||
if we should suppress pedantic errors/warnings for the given FILENAME.
|
||
|
||
The value is 2 if the file is a C-language system header file
|
||
for which C++ should (on most systems) assume `extern "C"'. */
|
||
|
||
static int
|
||
is_system_include (pfile, filename)
|
||
cpp_reader *pfile;
|
||
register char *filename;
|
||
{
|
||
struct file_name_list *searchptr;
|
||
|
||
for (searchptr = CPP_OPTIONS (pfile)->first_system_include; searchptr;
|
||
searchptr = searchptr->next)
|
||
if (searchptr->fname) {
|
||
register char *sys_dir = searchptr->fname;
|
||
register unsigned length = strlen (sys_dir);
|
||
|
||
if (! strncmp (sys_dir, filename, length) && filename[length] == '/')
|
||
{
|
||
if (searchptr->c_system_include_path)
|
||
return 2;
|
||
else
|
||
return 1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
/*
|
||
* Install a name in the assertion hash table.
|
||
*
|
||
* If LEN is >= 0, it is the length of the name.
|
||
* Otherwise, compute the length by scanning the entire name.
|
||
*
|
||
* If HASH is >= 0, it is the precomputed hash code.
|
||
* Otherwise, compute the hash code.
|
||
*/
|
||
|
||
static ASSERTION_HASHNODE *
|
||
assertion_install (pfile, name, len, hash)
|
||
cpp_reader *pfile;
|
||
U_CHAR *name;
|
||
int len;
|
||
int hash;
|
||
{
|
||
register ASSERTION_HASHNODE *hp;
|
||
register int i, bucket;
|
||
register U_CHAR *p, *q;
|
||
|
||
i = sizeof (ASSERTION_HASHNODE) + len + 1;
|
||
hp = (ASSERTION_HASHNODE *) xmalloc (i);
|
||
bucket = hash;
|
||
hp->bucket_hdr = &pfile->assertion_hashtab[bucket];
|
||
hp->next = pfile->assertion_hashtab[bucket];
|
||
pfile->assertion_hashtab[bucket] = hp;
|
||
hp->prev = NULL;
|
||
if (hp->next != NULL)
|
||
hp->next->prev = hp;
|
||
hp->length = len;
|
||
hp->value = 0;
|
||
hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
|
||
p = hp->name;
|
||
q = name;
|
||
for (i = 0; i < len; i++)
|
||
*p++ = *q++;
|
||
hp->name[len] = 0;
|
||
return hp;
|
||
}
|
||
/*
|
||
* find the most recent hash node for name "name" (ending with first
|
||
* non-identifier char) installed by install
|
||
*
|
||
* If LEN is >= 0, it is the length of the name.
|
||
* Otherwise, compute the length by scanning the entire name.
|
||
*
|
||
* If HASH is >= 0, it is the precomputed hash code.
|
||
* Otherwise, compute the hash code.
|
||
*/
|
||
|
||
static ASSERTION_HASHNODE *
|
||
assertion_lookup (pfile, name, len, hash)
|
||
cpp_reader *pfile;
|
||
U_CHAR *name;
|
||
int len;
|
||
int hash;
|
||
{
|
||
register ASSERTION_HASHNODE *bucket;
|
||
|
||
bucket = pfile->assertion_hashtab[hash];
|
||
while (bucket) {
|
||
if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
|
||
return bucket;
|
||
bucket = bucket->next;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
delete_assertion (hp)
|
||
ASSERTION_HASHNODE *hp;
|
||
{
|
||
struct tokenlist_list *tail;
|
||
if (hp->prev != NULL)
|
||
hp->prev->next = hp->next;
|
||
if (hp->next != NULL)
|
||
hp->next->prev = hp->prev;
|
||
|
||
for (tail = hp->value; tail; )
|
||
{
|
||
struct tokenlist_list *next = tail->next;
|
||
free_token_list (tail->tokens);
|
||
free (tail);
|
||
tail = next;
|
||
}
|
||
|
||
/* Make sure that the bucket chain header that
|
||
the deleted guy was on points to the right thing afterwards. */
|
||
if (hp == *hp->bucket_hdr)
|
||
*hp->bucket_hdr = hp->next;
|
||
|
||
free (hp);
|
||
}
|
||
|
||
/* Convert a character string literal into a nul-terminated string.
|
||
The input string is [IN ... LIMIT).
|
||
The result is placed in RESULT. RESULT can be the same as IN.
|
||
The value returned in the end of the string written to RESULT,
|
||
or NULL on error. */
|
||
|
||
static U_CHAR *
|
||
convert_string (pfile, result, in, limit, handle_escapes)
|
||
cpp_reader *pfile;
|
||
register U_CHAR *result, *in, *limit;
|
||
int handle_escapes;
|
||
{
|
||
U_CHAR c;
|
||
c = *in++;
|
||
if (c != '\"')
|
||
return NULL;
|
||
while (in < limit)
|
||
{
|
||
U_CHAR c = *in++;
|
||
switch (c)
|
||
{
|
||
case '\0':
|
||
return NULL;
|
||
case '\"':
|
||
limit = in;
|
||
break;
|
||
case '\\':
|
||
if (handle_escapes)
|
||
{
|
||
char *bpc = (char *) in;
|
||
int i = (U_CHAR) cpp_parse_escape (pfile, &bpc);
|
||
in = (U_CHAR *) bpc;
|
||
if (i >= 0)
|
||
*result++ = (U_CHAR)c;
|
||
break;
|
||
}
|
||
/* else fall through */
|
||
default:
|
||
*result++ = c;
|
||
}
|
||
}
|
||
*result = 0;
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
* interpret #line command. Remembers previously seen fnames
|
||
* in its very own hash table.
|
||
*/
|
||
#define FNAME_HASHSIZE 37
|
||
|
||
static int
|
||
do_line (pfile, keyword, unused1, unused2)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *unused1 ATTRIBUTE_UNUSED, *unused2 ATTRIBUTE_UNUSED;
|
||
{
|
||
cpp_buffer *ip = CPP_BUFFER (pfile);
|
||
int new_lineno;
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
enum file_change_code file_change = same_file;
|
||
enum cpp_token token;
|
||
|
||
token = get_directive_token (pfile);
|
||
|
||
if (token != CPP_NUMBER
|
||
|| !ISDIGIT(pfile->token_buffer[old_written]))
|
||
{
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
|
||
/* The Newline at the end of this line remains to be processed.
|
||
To put the next line at the specified line number,
|
||
we must store a line number now that is one less. */
|
||
new_lineno = atoi ((char *)(pfile->token_buffer + old_written)) - 1;
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
|
||
/* NEW_LINENO is one less than the actual line number here. */
|
||
if (CPP_PEDANTIC (pfile) && new_lineno < 0)
|
||
cpp_pedwarn (pfile, "line number out of range in `#line' command");
|
||
|
||
#if 0 /* #line 10"foo.c" is supposed to be allowed. */
|
||
if (PEEKC() && !is_space[PEEKC()]) {
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
#endif
|
||
|
||
token = get_directive_token (pfile);
|
||
|
||
if (token == CPP_STRING) {
|
||
U_CHAR *fname = pfile->token_buffer + old_written;
|
||
U_CHAR *end_name;
|
||
static HASHNODE *fname_table[FNAME_HASHSIZE];
|
||
HASHNODE *hp, **hash_bucket;
|
||
U_CHAR *p;
|
||
long num_start;
|
||
int fname_length;
|
||
|
||
/* Turn the file name, which is a character string literal,
|
||
into a null-terminated string. Do this in place. */
|
||
end_name = convert_string (pfile, fname, fname, CPP_PWRITTEN (pfile), 1);
|
||
if (end_name == NULL)
|
||
{
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
|
||
fname_length = end_name - fname;
|
||
|
||
num_start = CPP_WRITTEN (pfile);
|
||
token = get_directive_token (pfile);
|
||
if (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP) {
|
||
p = pfile->token_buffer + num_start;
|
||
if (CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "garbage at end of `#line' command");
|
||
|
||
if (token != CPP_NUMBER || *p < '0' || *p > '4' || p[1] != '\0')
|
||
{
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
if (*p == '1')
|
||
file_change = enter_file;
|
||
else if (*p == '2')
|
||
file_change = leave_file;
|
||
else if (*p == '3')
|
||
ip->system_header_p = 1;
|
||
else /* if (*p == '4') */
|
||
ip->system_header_p = 2;
|
||
|
||
CPP_SET_WRITTEN (pfile, num_start);
|
||
token = get_directive_token (pfile);
|
||
p = pfile->token_buffer + num_start;
|
||
if (token == CPP_NUMBER && p[1] == '\0' && (*p == '3' || *p== '4')) {
|
||
ip->system_header_p = *p == '3' ? 1 : 2;
|
||
token = get_directive_token (pfile);
|
||
}
|
||
if (token != CPP_VSPACE) {
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
}
|
||
|
||
hash_bucket = &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
|
||
for (hp = *hash_bucket; hp != NULL; hp = hp->next)
|
||
if (hp->length == fname_length
|
||
&& strncmp (hp->value.cpval, fname, fname_length) == 0) {
|
||
ip->nominal_fname = hp->value.cpval;
|
||
break;
|
||
}
|
||
if (hp == 0) {
|
||
/* Didn't find it; cons up a new one. */
|
||
hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
|
||
hp->next = *hash_bucket;
|
||
*hash_bucket = hp;
|
||
|
||
hp->length = fname_length;
|
||
ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
|
||
bcopy (fname, hp->value.cpval, fname_length);
|
||
}
|
||
}
|
||
else if (token != CPP_VSPACE && token != CPP_EOF) {
|
||
cpp_error (pfile, "invalid format `#line' command");
|
||
goto bad_line_directive;
|
||
}
|
||
|
||
ip->lineno = new_lineno;
|
||
bad_line_directive:
|
||
skip_rest_of_line (pfile);
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
output_line_command (pfile, 0, file_change);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* remove the definition of a symbol from the symbol table.
|
||
* according to un*x /lib/cpp, it is not an error to undef
|
||
* something that has no definitions, so it isn't one here either.
|
||
*/
|
||
|
||
static int
|
||
do_undef (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
int sym_length;
|
||
HASHNODE *hp;
|
||
U_CHAR *orig_buf = buf;
|
||
|
||
#if 0
|
||
/* If this is a precompiler run (with -pcp) pass thru #undef commands. */
|
||
if (pcp_outfile && keyword)
|
||
pass_thru_directive (buf, limit, pfile, keyword);
|
||
#endif
|
||
|
||
SKIP_WHITE_SPACE (buf);
|
||
sym_length = check_macro_name (pfile, buf, "macro");
|
||
|
||
/* pass -2 to indicate that we are going to undefine */
|
||
while ((hp = cpp_lookup (pfile, buf, sym_length, -2)) != NULL)
|
||
{
|
||
/* If we are generating additional info for debugging (with -g) we
|
||
need to pass through all effective #undef commands. */
|
||
if (CPP_OPTIONS (pfile)->debug_output && keyword)
|
||
pass_thru_directive (orig_buf, limit, pfile, keyword);
|
||
if (hp->type != T_MACRO)
|
||
cpp_warning (pfile, "undefining `%s'", hp->name);
|
||
delete_macro (hp);
|
||
}
|
||
|
||
if (CPP_PEDANTIC (pfile)) {
|
||
buf += sym_length;
|
||
SKIP_WHITE_SPACE (buf);
|
||
if (buf != limit)
|
||
cpp_pedwarn (pfile, "garbage after `#undef' directive");
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Report an error detected by the program we are processing.
|
||
* Use the text of the line in the error message.
|
||
* (We use error because it prints the filename & line#.)
|
||
*/
|
||
|
||
static int
|
||
do_error (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
int length = limit - buf;
|
||
U_CHAR *copy = (U_CHAR *) alloca (length + 1);
|
||
bcopy (buf, copy, length);
|
||
copy[length] = 0;
|
||
SKIP_WHITE_SPACE (copy);
|
||
cpp_error (pfile, "#error %s", copy);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Report a warning detected by the program we are processing.
|
||
* Use the text of the line in the warning message, then continue.
|
||
* (We use error because it prints the filename & line#.)
|
||
*/
|
||
|
||
static int
|
||
do_warning (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
int length = limit - buf;
|
||
U_CHAR *copy = (U_CHAR *) alloca (length + 1);
|
||
bcopy (buf, copy, length);
|
||
copy[length] = 0;
|
||
SKIP_WHITE_SPACE (copy);
|
||
|
||
if (CPP_PEDANTIC (pfile) && !CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#warning'");
|
||
|
||
/* Use `pedwarn' not `warning', because #warning isn't in the C Standard;
|
||
if -pedantic-errors is given, #warning should cause an error. */
|
||
cpp_pedwarn (pfile, "#warning %s", copy);
|
||
return 0;
|
||
}
|
||
|
||
/* Remember the name of the current file being read from so that we can
|
||
avoid ever including it again. */
|
||
|
||
static int
|
||
do_once (pfile, keyword, unused1, unused2)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *unused1 ATTRIBUTE_UNUSED, *unused2 ATTRIBUTE_UNUSED;
|
||
{
|
||
cpp_buffer *ip = NULL;
|
||
struct file_name_list *new;
|
||
|
||
for (ip = CPP_BUFFER (pfile); ; ip = CPP_PREV_BUFFER (ip))
|
||
{
|
||
if (ip == CPP_NULL_BUFFER (pfile))
|
||
return 0;
|
||
if (ip->fname != NULL)
|
||
break;
|
||
}
|
||
|
||
|
||
new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
|
||
new->next = pfile->dont_repeat_files;
|
||
pfile->dont_repeat_files = new;
|
||
new->fname = savestring (ip->fname);
|
||
new->control_macro = 0;
|
||
new->got_name_map = 0;
|
||
new->c_system_include_path = 0;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Report program identification. */
|
||
|
||
static int
|
||
do_ident (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
/* long old_written = CPP_WRITTEN (pfile);*/
|
||
|
||
/* Allow #ident in system headers, since that's not user's fault. */
|
||
if (CPP_PEDANTIC (pfile) && !CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#ident'");
|
||
|
||
/* Leave rest of line to be read by later calls to cpp_get_token. */
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* #pragma and its argument line have already been copied to the output file.
|
||
Just check for some recognized pragmas that need validation here. */
|
||
|
||
static int
|
||
do_pragma (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
while (*buf == ' ' || *buf == '\t')
|
||
buf++;
|
||
if (!strncmp (buf, "once", 4)) {
|
||
/* Allow #pragma once in system headers, since that's not the user's
|
||
fault. */
|
||
if (!CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_warning (pfile, "`#pragma once' is obsolete");
|
||
do_once (pfile, NULL, NULL, NULL);
|
||
}
|
||
|
||
if (!strncmp (buf, "implementation", 14)) {
|
||
/* Be quiet about `#pragma implementation' for a file only if it hasn't
|
||
been included yet. */
|
||
struct file_name_list *ptr;
|
||
U_CHAR *p = buf + 14, *fname, *inc_fname;
|
||
int fname_len;
|
||
SKIP_WHITE_SPACE (p);
|
||
if (*p == '\n' || *p != '\"')
|
||
return 0;
|
||
|
||
fname = p + 1;
|
||
p = (U_CHAR *) index (fname, '\"');
|
||
fname_len = p != NULL ? p - fname : strlen (fname);
|
||
|
||
for (ptr = pfile->all_include_files; ptr; ptr = ptr->next) {
|
||
inc_fname = (U_CHAR *) rindex (ptr->fname, '/');
|
||
inc_fname = inc_fname ? inc_fname + 1 : (U_CHAR *) ptr->fname;
|
||
if (inc_fname && !strncmp (inc_fname, fname, fname_len))
|
||
cpp_warning (pfile,
|
||
"`#pragma implementation' for `%s' appears after file is included",
|
||
fname);
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
#if 0
|
||
/* This was a fun hack, but #pragma seems to start to be useful.
|
||
By failing to recognize it, we pass it through unchanged to cc1. */
|
||
|
||
/*
|
||
* the behavior of the #pragma directive is implementation defined.
|
||
* this implementation defines it as follows.
|
||
*/
|
||
|
||
static int
|
||
do_pragma ()
|
||
{
|
||
close (0);
|
||
if (open ("/dev/tty", O_RDONLY, 0666) != 0)
|
||
goto nope;
|
||
close (1);
|
||
if (open ("/dev/tty", O_WRONLY, 0666) != 1)
|
||
goto nope;
|
||
execl ("/usr/games/hack", "#pragma", 0);
|
||
execl ("/usr/games/rogue", "#pragma", 0);
|
||
execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
|
||
execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
|
||
nope:
|
||
fatal ("You are in a maze of twisty compiler features, all different");
|
||
}
|
||
#endif
|
||
|
||
#ifdef SCCS_DIRECTIVE
|
||
/* Just ignore #sccs, on systems where we define it at all. */
|
||
|
||
static int
|
||
do_sccs (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
if (CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#sccs'");
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* handle #if command by
|
||
* 1) inserting special `defined' keyword into the hash table
|
||
* that gets turned into 0 or 1 by special_symbol (thus,
|
||
* if the luser has a symbol called `defined' already, it won't
|
||
* work inside the #if command)
|
||
* 2) rescan the input into a temporary output buffer
|
||
* 3) pass the output buffer to the yacc parser and collect a value
|
||
* 4) clean up the mess left from steps 1 and 2.
|
||
* 5) call conditional_skip to skip til the next #endif (etc.),
|
||
* or not, depending on the value from step 3.
|
||
*/
|
||
|
||
static int
|
||
do_if (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
HOST_WIDE_INT value = eval_if_expression (pfile, buf, limit - buf);
|
||
conditional_skip (pfile, value == 0, T_IF, NULL_PTR);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* handle a #elif directive by not changing if_stack either.
|
||
* see the comment above do_else.
|
||
*/
|
||
|
||
static int
|
||
do_elif (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf, *limit;
|
||
{
|
||
if (pfile->if_stack == CPP_BUFFER (pfile)->if_stack) {
|
||
cpp_error (pfile, "`#elif' not within a conditional");
|
||
return 0;
|
||
} else {
|
||
if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF) {
|
||
cpp_error (pfile, "`#elif' after `#else'");
|
||
#if 0
|
||
fprintf (stderr, " (matches line %d", pfile->if_stack->lineno);
|
||
#endif
|
||
if (pfile->if_stack->fname != NULL && CPP_BUFFER (pfile)->fname != NULL
|
||
&& strcmp (pfile->if_stack->fname,
|
||
CPP_BUFFER (pfile)->nominal_fname) != 0)
|
||
fprintf (stderr, ", file %s", pfile->if_stack->fname);
|
||
fprintf (stderr, ")\n");
|
||
}
|
||
pfile->if_stack->type = T_ELIF;
|
||
}
|
||
|
||
if (pfile->if_stack->if_succeeded)
|
||
skip_if_group (pfile, 0);
|
||
else {
|
||
HOST_WIDE_INT value = eval_if_expression (pfile, buf, limit - buf);
|
||
if (value == 0)
|
||
skip_if_group (pfile, 0);
|
||
else {
|
||
++pfile->if_stack->if_succeeded; /* continue processing input */
|
||
output_line_command (pfile, 1, same_file);
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* evaluate a #if expression in BUF, of length LENGTH,
|
||
* then parse the result as a C expression and return the value as an int.
|
||
*/
|
||
|
||
static HOST_WIDE_INT
|
||
eval_if_expression (pfile, buf, length)
|
||
cpp_reader *pfile;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED;
|
||
int length ATTRIBUTE_UNUSED;
|
||
{
|
||
HASHNODE *save_defined;
|
||
HOST_WIDE_INT value;
|
||
long old_written = CPP_WRITTEN (pfile);
|
||
|
||
save_defined = install ((U_CHAR *)"defined", -1, T_SPEC_DEFINED, 0, 0, -1);
|
||
pfile->pcp_inside_if = 1;
|
||
|
||
value = cpp_parse_expr (pfile);
|
||
pfile->pcp_inside_if = 0;
|
||
delete_macro (save_defined); /* clean up special symbol */
|
||
|
||
CPP_SET_WRITTEN (pfile, old_written); /* Pop */
|
||
|
||
return value;
|
||
}
|
||
|
||
/*
|
||
* routine to handle ifdef/ifndef. Try to look up the symbol,
|
||
* then do or don't skip to the #endif/#else/#elif depending
|
||
* on what directive is actually being processed.
|
||
*/
|
||
|
||
static int
|
||
do_xifdef (pfile, keyword, unused1, unused2)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword;
|
||
U_CHAR *unused1 ATTRIBUTE_UNUSED, *unused2 ATTRIBUTE_UNUSED;
|
||
{
|
||
int skip;
|
||
cpp_buffer *ip = CPP_BUFFER (pfile);
|
||
U_CHAR *ident;
|
||
int ident_length;
|
||
enum cpp_token token;
|
||
int start_of_file = 0;
|
||
U_CHAR *control_macro = 0;
|
||
int old_written = CPP_WRITTEN (pfile);
|
||
|
||
/* Detect a #ifndef at start of file (not counting comments). */
|
||
if (ip->fname != 0 && keyword->type == T_IFNDEF)
|
||
start_of_file = pfile->only_seen_white == 2;
|
||
|
||
pfile->no_macro_expand++;
|
||
token = get_directive_token (pfile);
|
||
pfile->no_macro_expand--;
|
||
|
||
ident = pfile->token_buffer + old_written;
|
||
ident_length = CPP_WRITTEN (pfile) - old_written;
|
||
CPP_SET_WRITTEN (pfile, old_written); /* Pop */
|
||
|
||
if (token == CPP_VSPACE || token == CPP_POP || token == CPP_EOF)
|
||
{
|
||
skip = (keyword->type == T_IFDEF);
|
||
if (! CPP_TRADITIONAL (pfile))
|
||
cpp_pedwarn (pfile, "`#%s' with no argument", keyword->name);
|
||
}
|
||
else if (token == CPP_NAME)
|
||
{
|
||
HASHNODE *hp = cpp_lookup (pfile, ident, ident_length, -1);
|
||
skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
|
||
if (start_of_file && !skip)
|
||
{
|
||
control_macro = (U_CHAR *) xmalloc (ident_length + 1);
|
||
bcopy (ident, control_macro, ident_length + 1);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
skip = (keyword->type == T_IFDEF);
|
||
if (! CPP_TRADITIONAL (pfile))
|
||
cpp_error (pfile, "`#%s' with invalid argument", keyword->name);
|
||
}
|
||
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
{ int c;
|
||
cpp_skip_hspace (pfile);
|
||
c = PEEKC ();
|
||
if (c != EOF && c != '\n')
|
||
cpp_pedwarn (pfile, "garbage at end of `#%s' argument", keyword->name);
|
||
}
|
||
skip_rest_of_line (pfile);
|
||
|
||
#if 0
|
||
if (pcp_outfile) {
|
||
/* Output a precondition for this macro. */
|
||
if (hp && hp->value.defn->predefined)
|
||
fprintf (pcp_outfile, "#define %s\n", hp->name);
|
||
else {
|
||
U_CHAR *cp = buf;
|
||
fprintf (pcp_outfile, "#undef ");
|
||
while (is_idchar[*cp]) /* Ick! */
|
||
fputc (*cp++, pcp_outfile);
|
||
putc ('\n', pcp_outfile);
|
||
}
|
||
#endif
|
||
|
||
conditional_skip (pfile, skip, T_IF, control_macro);
|
||
return 0;
|
||
}
|
||
|
||
/* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
|
||
If this is a #ifndef starting at the beginning of a file,
|
||
CONTROL_MACRO is the macro name tested by the #ifndef.
|
||
Otherwise, CONTROL_MACRO is 0. */
|
||
|
||
static void
|
||
conditional_skip (pfile, skip, type, control_macro)
|
||
cpp_reader *pfile;
|
||
int skip;
|
||
enum node_type type;
|
||
U_CHAR *control_macro;
|
||
{
|
||
IF_STACK_FRAME *temp;
|
||
|
||
temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
|
||
temp->fname = CPP_BUFFER (pfile)->nominal_fname;
|
||
#if 0
|
||
temp->lineno = CPP_BUFFER (pfile)->lineno;
|
||
#endif
|
||
temp->next = pfile->if_stack;
|
||
temp->control_macro = control_macro;
|
||
pfile->if_stack = temp;
|
||
|
||
pfile->if_stack->type = type;
|
||
|
||
if (skip != 0) {
|
||
skip_if_group (pfile, 0);
|
||
return;
|
||
} else {
|
||
++pfile->if_stack->if_succeeded;
|
||
output_line_command (pfile, 1, same_file);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* skip to #endif, #else, or #elif. adjust line numbers, etc.
|
||
* leaves input ptr at the sharp sign found.
|
||
* If ANY is nonzero, return at next directive of any sort.
|
||
*/
|
||
|
||
static void
|
||
skip_if_group (pfile, any)
|
||
cpp_reader *pfile;
|
||
int any;
|
||
{
|
||
int c;
|
||
struct directive *kt;
|
||
IF_STACK_FRAME *save_if_stack = pfile->if_stack; /* don't pop past here */
|
||
#if 0
|
||
U_CHAR *beg_of_line = bp;
|
||
#endif
|
||
register int ident_length;
|
||
U_CHAR *ident;
|
||
struct parse_marker line_start_mark;
|
||
|
||
parse_set_mark (&line_start_mark, pfile);
|
||
|
||
if (CPP_OPTIONS (pfile)->output_conditionals) {
|
||
static char failed[] = "#failed\n";
|
||
CPP_PUTS (pfile, failed, sizeof(failed)-1);
|
||
pfile->lineno++;
|
||
output_line_command (pfile, 1, same_file);
|
||
}
|
||
|
||
beg_of_line:
|
||
if (CPP_OPTIONS (pfile)->output_conditionals)
|
||
{
|
||
cpp_buffer *pbuf = CPP_BUFFER (pfile);
|
||
U_CHAR *start_line = pbuf->buf + line_start_mark.position;
|
||
CPP_PUTS (pfile, start_line, pbuf->cur - start_line);
|
||
}
|
||
parse_move_mark (&line_start_mark, pfile);
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
cpp_skip_hspace (pfile);
|
||
c = GETC();
|
||
if (c == '#')
|
||
{
|
||
int old_written = CPP_WRITTEN (pfile);
|
||
cpp_skip_hspace (pfile);
|
||
|
||
parse_name (pfile, GETC());
|
||
ident_length = CPP_WRITTEN (pfile) - old_written;
|
||
ident = pfile->token_buffer + old_written;
|
||
pfile->limit = ident;
|
||
#if 0
|
||
if (ident_length == 0)
|
||
goto not_a_directive;
|
||
|
||
/* Handle # followed by a line number. */
|
||
|
||
/* Avoid error for `###' and similar cases unless -pedantic. */
|
||
#endif
|
||
|
||
for (kt = directive_table; kt->length >= 0; kt++)
|
||
{
|
||
IF_STACK_FRAME *temp;
|
||
if (ident_length == kt->length
|
||
&& strncmp (ident, kt->name, kt->length) == 0)
|
||
{
|
||
/* If we are asked to return on next directive, do so now. */
|
||
if (any)
|
||
goto done;
|
||
|
||
switch (kt->type)
|
||
{
|
||
case T_IF:
|
||
case T_IFDEF:
|
||
case T_IFNDEF:
|
||
temp
|
||
= (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
|
||
temp->next = pfile->if_stack;
|
||
pfile->if_stack = temp;
|
||
#if 0
|
||
temp->lineno = CPP_BUFFER(pfile)->lineno;
|
||
#endif
|
||
temp->fname = CPP_BUFFER(pfile)->nominal_fname;
|
||
temp->type = kt->type;
|
||
break;
|
||
case T_ELSE:
|
||
case T_ENDIF:
|
||
if (CPP_PEDANTIC (pfile) && pfile->if_stack != save_if_stack)
|
||
validate_else (pfile,
|
||
kt->type == T_ELSE ? "#else" : "#endif");
|
||
case T_ELIF:
|
||
if (pfile->if_stack == CPP_BUFFER (pfile)->if_stack)
|
||
{
|
||
cpp_error (pfile,
|
||
"`#%s' not within a conditional", kt->name);
|
||
break;
|
||
}
|
||
else if (pfile->if_stack == save_if_stack)
|
||
goto done; /* found what we came for */
|
||
|
||
if (kt->type != T_ENDIF)
|
||
{
|
||
if (pfile->if_stack->type == T_ELSE)
|
||
cpp_error (pfile, "`#else' or `#elif' after `#else'");
|
||
pfile->if_stack->type = kt->type;
|
||
break;
|
||
}
|
||
|
||
temp = pfile->if_stack;
|
||
pfile->if_stack = temp->next;
|
||
free (temp);
|
||
break;
|
||
default: ;
|
||
}
|
||
break;
|
||
}
|
||
/* Don't let erroneous code go by. */
|
||
if (kt->length < 0 && !CPP_OPTIONS (pfile)->lang_asm
|
||
&& CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "invalid preprocessor directive name");
|
||
}
|
||
c = GETC ();
|
||
}
|
||
/* We're in the middle of a line. Skip the rest of it. */
|
||
for (;;) {
|
||
switch (c)
|
||
{
|
||
long old;
|
||
case EOF:
|
||
goto done;
|
||
case '/': /* possible comment */
|
||
c = skip_comment (pfile, NULL);
|
||
if (c == EOF)
|
||
goto done;
|
||
break;
|
||
case '\"':
|
||
case '\'':
|
||
FORWARD(-1);
|
||
old = CPP_WRITTEN (pfile);
|
||
cpp_get_token (pfile);
|
||
CPP_SET_WRITTEN (pfile, old);
|
||
break;
|
||
case '\\':
|
||
/* Char after backslash loses its special meaning. */
|
||
if (PEEKC() == '\n')
|
||
FORWARD (1);
|
||
break;
|
||
case '\n':
|
||
goto beg_of_line;
|
||
break;
|
||
}
|
||
c = GETC ();
|
||
}
|
||
done:
|
||
if (CPP_OPTIONS (pfile)->output_conditionals) {
|
||
static char end_failed[] = "#endfailed\n";
|
||
CPP_PUTS (pfile, end_failed, sizeof(end_failed)-1);
|
||
pfile->lineno++;
|
||
}
|
||
pfile->only_seen_white = 1;
|
||
parse_goto_mark (&line_start_mark, pfile);
|
||
parse_clear_mark (&line_start_mark);
|
||
}
|
||
|
||
/*
|
||
* handle a #else directive. Do this by just continuing processing
|
||
* without changing if_stack ; this is so that the error message
|
||
* for missing #endif's etc. will point to the original #if. It
|
||
* is possible that something different would be better.
|
||
*/
|
||
|
||
static int
|
||
do_else (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
cpp_buffer *ip = CPP_BUFFER (pfile);
|
||
|
||
if (CPP_PEDANTIC (pfile))
|
||
validate_else (pfile, "#else");
|
||
skip_rest_of_line (pfile);
|
||
|
||
if (pfile->if_stack == CPP_BUFFER (pfile)->if_stack) {
|
||
cpp_error (pfile, "`#else' not within a conditional");
|
||
return 0;
|
||
} else {
|
||
/* #ifndef can't have its special treatment for containing the whole file
|
||
if it has a #else clause. */
|
||
pfile->if_stack->control_macro = 0;
|
||
|
||
if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF) {
|
||
cpp_error (pfile, "`#else' after `#else'");
|
||
fprintf (stderr, " (matches line %d", pfile->if_stack->lineno);
|
||
if (strcmp (pfile->if_stack->fname, ip->nominal_fname) != 0)
|
||
fprintf (stderr, ", file %s", pfile->if_stack->fname);
|
||
fprintf (stderr, ")\n");
|
||
}
|
||
pfile->if_stack->type = T_ELSE;
|
||
}
|
||
|
||
if (pfile->if_stack->if_succeeded)
|
||
skip_if_group (pfile, 0);
|
||
else {
|
||
++pfile->if_stack->if_succeeded; /* continue processing input */
|
||
output_line_command (pfile, 1, same_file);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* unstack after #endif command
|
||
*/
|
||
|
||
static int
|
||
do_endif (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
if (CPP_PEDANTIC (pfile))
|
||
validate_else (pfile, "#endif");
|
||
skip_rest_of_line (pfile);
|
||
|
||
if (pfile->if_stack == CPP_BUFFER (pfile)->if_stack)
|
||
cpp_error (pfile, "unbalanced `#endif'");
|
||
else
|
||
{
|
||
IF_STACK_FRAME *temp = pfile->if_stack;
|
||
pfile->if_stack = temp->next;
|
||
if (temp->control_macro != 0)
|
||
{
|
||
/* This #endif matched a #ifndef at the start of the file.
|
||
See if it is at the end of the file. */
|
||
struct parse_marker start_mark;
|
||
int c;
|
||
|
||
parse_set_mark (&start_mark, pfile);
|
||
|
||
for (;;)
|
||
{
|
||
cpp_skip_hspace (pfile);
|
||
c = GETC ();
|
||
if (c != '\n')
|
||
break;
|
||
}
|
||
parse_goto_mark (&start_mark, pfile);
|
||
parse_clear_mark (&start_mark);
|
||
|
||
if (c == EOF)
|
||
{
|
||
/* If we get here, this #endif ends a #ifndef
|
||
that contains all of the file (aside from whitespace).
|
||
Arrange not to include the file again
|
||
if the macro that was tested is defined.
|
||
|
||
Do not do this for the top-level file in a -include or any
|
||
file in a -imacros. */
|
||
#if 0
|
||
FIXME!
|
||
if (indepth != 0
|
||
&& ! (indepth == 1 && pfile->no_record_file)
|
||
&& ! (pfile->no_record_file && no_output))
|
||
#endif
|
||
{
|
||
struct file_name_list *ifile = pfile->all_include_files;
|
||
|
||
for ( ; ifile != NULL; ifile = ifile->next)
|
||
{
|
||
if (!strcmp (ifile->fname, CPP_BUFFER (pfile)->fname))
|
||
{
|
||
ifile->control_macro = temp->control_macro;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
free (temp);
|
||
output_line_command (pfile, 1, same_file);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* When an #else or #endif is found while skipping failed conditional,
|
||
if -pedantic was specified, this is called to warn about text after
|
||
the command name. P points to the first char after the command name. */
|
||
|
||
static void
|
||
validate_else (pfile, directive)
|
||
cpp_reader *pfile;
|
||
char *directive;
|
||
{
|
||
int c;
|
||
cpp_skip_hspace (pfile);
|
||
c = PEEKC ();
|
||
if (c != EOF && c != '\n')
|
||
cpp_pedwarn (pfile,
|
||
"text following `%s' violates ANSI standard", directive);
|
||
}
|
||
|
||
/* Get the next token, and add it to the text in pfile->token_buffer.
|
||
Return the kind of token we got. */
|
||
|
||
enum cpp_token
|
||
cpp_get_token (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
register int c, c2, c3;
|
||
long old_written;
|
||
long start_line, start_column;
|
||
enum cpp_token token;
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
CPP_BUFFER (pfile)->prev = CPP_BUFFER (pfile)->cur;
|
||
get_next:
|
||
c = GETC();
|
||
if (c == EOF)
|
||
{
|
||
handle_eof:
|
||
if (CPP_BUFFER (pfile)->seen_eof)
|
||
{
|
||
if (cpp_pop_buffer (pfile) != CPP_NULL_BUFFER (pfile))
|
||
goto get_next;
|
||
else
|
||
return CPP_EOF;
|
||
}
|
||
else
|
||
{
|
||
cpp_buffer *next_buf
|
||
= CPP_PREV_BUFFER (CPP_BUFFER (pfile));
|
||
CPP_BUFFER (pfile)->seen_eof = 1;
|
||
if (CPP_BUFFER (pfile)->nominal_fname
|
||
&& next_buf != CPP_NULL_BUFFER (pfile))
|
||
{
|
||
/* We're about to return from an #include file.
|
||
Emit #line information now (as part of the CPP_POP) result.
|
||
But the #line refers to the file we will pop to. */
|
||
cpp_buffer *cur_buffer = CPP_BUFFER (pfile);
|
||
CPP_BUFFER (pfile) = next_buf;
|
||
pfile->input_stack_listing_current = 0;
|
||
output_line_command (pfile, 0, leave_file);
|
||
CPP_BUFFER (pfile) = cur_buffer;
|
||
}
|
||
return CPP_POP;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
switch (c)
|
||
{
|
||
long newlines;
|
||
struct parse_marker start_mark;
|
||
case '/':
|
||
if (PEEKC () == '=')
|
||
goto op2;
|
||
if (opts->put_out_comments)
|
||
parse_set_mark (&start_mark, pfile);
|
||
newlines = 0;
|
||
cpp_buf_line_and_col (cpp_file_buffer (pfile),
|
||
&start_line, &start_column);
|
||
c = skip_comment (pfile, &newlines);
|
||
if (opts->put_out_comments && (c == '/' || c == EOF))
|
||
parse_clear_mark (&start_mark);
|
||
if (c == '/')
|
||
goto randomchar;
|
||
if (c == EOF)
|
||
{
|
||
cpp_error_with_line (pfile, start_line, start_column,
|
||
"unterminated comment");
|
||
goto handle_eof;
|
||
}
|
||
c = '/'; /* Initial letter of comment. */
|
||
return_comment:
|
||
/* Comments are equivalent to spaces.
|
||
For -traditional, a comment is equivalent to nothing. */
|
||
if (opts->put_out_comments)
|
||
{
|
||
cpp_buffer *pbuf = CPP_BUFFER (pfile);
|
||
U_CHAR *start = pbuf->buf + start_mark.position;
|
||
int len = pbuf->cur - start;
|
||
CPP_RESERVE(pfile, 1 + len);
|
||
CPP_PUTC_Q (pfile, c);
|
||
CPP_PUTS_Q (pfile, start, len);
|
||
pfile->lineno += newlines;
|
||
parse_clear_mark (&start_mark);
|
||
return CPP_COMMENT;
|
||
}
|
||
else if (CPP_TRADITIONAL (pfile))
|
||
{
|
||
return CPP_COMMENT;
|
||
}
|
||
else
|
||
{
|
||
#if 0
|
||
/* This may not work if cpp_get_token is called recursively,
|
||
since many places look for horizontal space. */
|
||
if (newlines)
|
||
{
|
||
/* Copy the newlines into the output buffer, in order to
|
||
avoid the pain of a #line every time a multiline comment
|
||
is seen. */
|
||
CPP_RESERVE(pfile, newlines);
|
||
while (--newlines >= 0)
|
||
{
|
||
CPP_PUTC_Q (pfile, '\n');
|
||
pfile->lineno++;
|
||
}
|
||
return CPP_VSPACE;
|
||
}
|
||
#endif
|
||
CPP_RESERVE(pfile, 1);
|
||
CPP_PUTC_Q (pfile, ' ');
|
||
return CPP_HSPACE;
|
||
}
|
||
#if 0
|
||
if (opts->for_lint) {
|
||
U_CHAR *argbp;
|
||
int cmdlen, arglen;
|
||
char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
|
||
|
||
if (lintcmd != NULL) {
|
||
/* I believe it is always safe to emit this newline: */
|
||
obp[-1] = '\n';
|
||
bcopy ("#pragma lint ", (char *) obp, 13);
|
||
obp += 13;
|
||
bcopy (lintcmd, (char *) obp, cmdlen);
|
||
obp += cmdlen;
|
||
|
||
if (arglen != 0) {
|
||
*(obp++) = ' ';
|
||
bcopy (argbp, (char *) obp, arglen);
|
||
obp += arglen;
|
||
}
|
||
|
||
/* OK, now bring us back to the state we were in before we entered
|
||
this branch. We need #line because the newline for the pragma
|
||
could mess things up. */
|
||
output_line_command (pfile, 0, same_file);
|
||
*(obp++) = ' '; /* just in case, if comments are copied thru */
|
||
*(obp++) = '/';
|
||
}
|
||
}
|
||
#endif
|
||
|
||
case '#':
|
||
#if 0
|
||
/* If this is expanding a macro definition, don't recognize
|
||
preprocessor directives. */
|
||
if (ip->macro != 0)
|
||
goto randomchar;
|
||
/* If this is expand_into_temp_buffer, recognize them
|
||
only after an actual newline at this level,
|
||
not at the beginning of the input level. */
|
||
if (ip->fname == 0 && beg_of_line == ip->buf)
|
||
goto randomchar;
|
||
if (ident_length)
|
||
goto specialchar;
|
||
#endif
|
||
|
||
if (!pfile->only_seen_white)
|
||
goto randomchar;
|
||
if (handle_directive (pfile))
|
||
return CPP_DIRECTIVE;
|
||
pfile->only_seen_white = 0;
|
||
return CPP_OTHER;
|
||
|
||
case '\"':
|
||
case '\'':
|
||
/* A single quoted string is treated like a double -- some
|
||
programs (e.g., troff) are perverse this way */
|
||
cpp_buf_line_and_col (cpp_file_buffer (pfile),
|
||
&start_line, &start_column);
|
||
old_written = CPP_WRITTEN (pfile);
|
||
string:
|
||
CPP_PUTC (pfile, c);
|
||
while (1)
|
||
{
|
||
int cc = GETC();
|
||
if (cc == EOF)
|
||
{
|
||
if (CPP_IS_MACRO_BUFFER (CPP_BUFFER (pfile)))
|
||
{
|
||
/* try harder: this string crosses a macro expansion
|
||
boundary. This can happen naturally if -traditional.
|
||
Otherwise, only -D can make a macro with an unmatched
|
||
quote. */
|
||
cpp_buffer *next_buf
|
||
= CPP_PREV_BUFFER (CPP_BUFFER (pfile));
|
||
(*CPP_BUFFER (pfile)->cleanup)
|
||
(CPP_BUFFER (pfile), pfile);
|
||
CPP_BUFFER (pfile) = next_buf;
|
||
continue;
|
||
}
|
||
if (!CPP_TRADITIONAL (pfile))
|
||
{
|
||
cpp_error_with_line (pfile, start_line, start_column,
|
||
"unterminated string or character constant");
|
||
if (pfile->multiline_string_line != start_line
|
||
&& pfile->multiline_string_line != 0)
|
||
cpp_error_with_line (pfile,
|
||
pfile->multiline_string_line, -1,
|
||
"possible real start of unterminated constant");
|
||
pfile->multiline_string_line = 0;
|
||
}
|
||
break;
|
||
}
|
||
CPP_PUTC (pfile, cc);
|
||
switch (cc)
|
||
{
|
||
case '\n':
|
||
/* Traditionally, end of line ends a string constant with
|
||
no error. So exit the loop and record the new line. */
|
||
if (CPP_TRADITIONAL (pfile))
|
||
goto while2end;
|
||
if (c == '\'')
|
||
{
|
||
cpp_error_with_line (pfile, start_line, start_column,
|
||
"unterminated character constant");
|
||
goto while2end;
|
||
}
|
||
if (CPP_PEDANTIC (pfile)
|
||
&& pfile->multiline_string_line == 0)
|
||
{
|
||
cpp_pedwarn_with_line (pfile, start_line, start_column,
|
||
"string constant runs past end of line");
|
||
}
|
||
if (pfile->multiline_string_line == 0)
|
||
pfile->multiline_string_line = start_line;
|
||
break;
|
||
|
||
case '\\':
|
||
cc = GETC();
|
||
if (cc == '\n')
|
||
{
|
||
/* Backslash newline is replaced by nothing at all. */
|
||
CPP_ADJUST_WRITTEN (pfile, -1);
|
||
pfile->lineno++;
|
||
}
|
||
else
|
||
{
|
||
/* ANSI stupidly requires that in \\ the second \
|
||
is *not* prevented from combining with a newline. */
|
||
NEWLINE_FIX1(cc);
|
||
if (cc != EOF)
|
||
CPP_PUTC (pfile, cc);
|
||
}
|
||
break;
|
||
|
||
case '\"':
|
||
case '\'':
|
||
if (cc == c)
|
||
goto while2end;
|
||
break;
|
||
}
|
||
}
|
||
while2end:
|
||
pfile->lineno += count_newlines (pfile->token_buffer + old_written,
|
||
CPP_PWRITTEN (pfile));
|
||
pfile->only_seen_white = 0;
|
||
return c == '\'' ? CPP_CHAR : CPP_STRING;
|
||
|
||
case '$':
|
||
if (!opts->dollars_in_ident)
|
||
goto randomchar;
|
||
goto letter;
|
||
|
||
case ':':
|
||
if (opts->cplusplus && PEEKC () == ':')
|
||
goto op2;
|
||
goto randomchar;
|
||
|
||
case '&':
|
||
case '+':
|
||
case '|':
|
||
NEWLINE_FIX;
|
||
c2 = PEEKC ();
|
||
if (c2 == c || c2 == '=')
|
||
goto op2;
|
||
goto randomchar;
|
||
|
||
case '*':
|
||
case '!':
|
||
case '%':
|
||
case '=':
|
||
case '^':
|
||
NEWLINE_FIX;
|
||
if (PEEKC () == '=')
|
||
goto op2;
|
||
goto randomchar;
|
||
|
||
case '-':
|
||
NEWLINE_FIX;
|
||
c2 = PEEKC ();
|
||
if (c2 == '-' && opts->chill)
|
||
{
|
||
/* Chill style comment */
|
||
if (opts->put_out_comments)
|
||
parse_set_mark (&start_mark, pfile);
|
||
FORWARD(1); /* Skip second '-'. */
|
||
for (;;)
|
||
{
|
||
c = GETC ();
|
||
if (c == EOF)
|
||
break;
|
||
if (c == '\n')
|
||
{
|
||
/* Don't consider final '\n' to be part of comment. */
|
||
FORWARD(-1);
|
||
break;
|
||
}
|
||
}
|
||
c = '-';
|
||
goto return_comment;
|
||
}
|
||
if (c2 == '-' || c2 == '=' || c2 == '>')
|
||
goto op2;
|
||
goto randomchar;
|
||
|
||
case '<':
|
||
if (pfile->parsing_include_directive)
|
||
{
|
||
for (;;)
|
||
{
|
||
CPP_PUTC (pfile, c);
|
||
if (c == '>')
|
||
break;
|
||
c = GETC ();
|
||
NEWLINE_FIX1 (c);
|
||
if (c == '\n' || c == EOF)
|
||
{
|
||
cpp_error (pfile,
|
||
"missing '>' in `#include <FILENAME>'");
|
||
break;
|
||
}
|
||
}
|
||
return CPP_STRING;
|
||
}
|
||
/* else fall through */
|
||
case '>':
|
||
NEWLINE_FIX;
|
||
c2 = PEEKC ();
|
||
if (c2 == '=')
|
||
goto op2;
|
||
if (c2 != c)
|
||
goto randomchar;
|
||
FORWARD(1);
|
||
CPP_RESERVE (pfile, 4);
|
||
CPP_PUTC (pfile, c);
|
||
CPP_PUTC (pfile, c2);
|
||
NEWLINE_FIX;
|
||
c3 = PEEKC ();
|
||
if (c3 == '=')
|
||
CPP_PUTC_Q (pfile, GETC ());
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
pfile->only_seen_white = 0;
|
||
return CPP_OTHER;
|
||
|
||
case '@':
|
||
if (CPP_BUFFER (pfile)->has_escapes)
|
||
{
|
||
c = GETC ();
|
||
if (c == '-')
|
||
{
|
||
if (pfile->output_escapes)
|
||
CPP_PUTS (pfile, "@-", 2);
|
||
parse_name (pfile, GETC ());
|
||
return CPP_NAME;
|
||
}
|
||
else if (is_space [c])
|
||
{
|
||
CPP_RESERVE (pfile, 2);
|
||
if (pfile->output_escapes)
|
||
CPP_PUTC_Q (pfile, '@');
|
||
CPP_PUTC_Q (pfile, c);
|
||
return CPP_HSPACE;
|
||
}
|
||
}
|
||
if (pfile->output_escapes)
|
||
{
|
||
CPP_PUTS (pfile, "@@", 2);
|
||
return CPP_OTHER;
|
||
}
|
||
goto randomchar;
|
||
|
||
case '.':
|
||
NEWLINE_FIX;
|
||
c2 = PEEKC ();
|
||
if (ISDIGIT(c2))
|
||
{
|
||
CPP_RESERVE(pfile, 2);
|
||
CPP_PUTC_Q (pfile, '.');
|
||
c = GETC ();
|
||
goto number;
|
||
}
|
||
/* FIXME - misses the case "..\\\n." */
|
||
if (c2 == '.' && PEEKN(1) == '.')
|
||
{
|
||
CPP_RESERVE(pfile, 4);
|
||
CPP_PUTC_Q (pfile, '.');
|
||
CPP_PUTC_Q (pfile, '.');
|
||
CPP_PUTC_Q (pfile, '.');
|
||
FORWARD (2);
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
pfile->only_seen_white = 0;
|
||
return CPP_3DOTS;
|
||
}
|
||
goto randomchar;
|
||
|
||
op2:
|
||
token = CPP_OTHER;
|
||
pfile->only_seen_white = 0;
|
||
op2any:
|
||
CPP_RESERVE(pfile, 3);
|
||
CPP_PUTC_Q (pfile, c);
|
||
CPP_PUTC_Q (pfile, GETC ());
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
return token;
|
||
|
||
case 'L':
|
||
NEWLINE_FIX;
|
||
c2 = PEEKC ();
|
||
if ((c2 == '\'' || c2 == '\"') && !CPP_TRADITIONAL (pfile))
|
||
{
|
||
CPP_PUTC (pfile, c);
|
||
c = GETC ();
|
||
goto string;
|
||
}
|
||
goto letter;
|
||
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9':
|
||
number:
|
||
c2 = '.';
|
||
for (;;)
|
||
{
|
||
CPP_RESERVE (pfile, 2);
|
||
CPP_PUTC_Q (pfile, c);
|
||
NEWLINE_FIX;
|
||
c = PEEKC ();
|
||
if (c == EOF)
|
||
break;
|
||
if (!is_idchar[c] && c != '.'
|
||
&& ((c2 != 'e' && c2 != 'E'
|
||
&& ((c2 != 'p' && c2 != 'P') || CPP_C89 (pfile)))
|
||
|| (c != '+' && c != '-')))
|
||
break;
|
||
FORWARD(1);
|
||
c2= c;
|
||
}
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
pfile->only_seen_white = 0;
|
||
return CPP_NUMBER;
|
||
case 'b': case 'c': case 'd': case 'h': case 'o':
|
||
case 'B': case 'C': case 'D': case 'H': case 'O':
|
||
if (opts->chill && PEEKC () == '\'')
|
||
{
|
||
pfile->only_seen_white = 0;
|
||
CPP_RESERVE (pfile, 2);
|
||
CPP_PUTC_Q (pfile, c);
|
||
CPP_PUTC_Q (pfile, '\'');
|
||
FORWARD(1);
|
||
for (;;)
|
||
{
|
||
c = GETC();
|
||
if (c == EOF)
|
||
goto chill_number_eof;
|
||
if (!is_idchar[c])
|
||
{
|
||
if (c == '\\' && PEEKC() == '\n')
|
||
{
|
||
FORWARD(2);
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
CPP_PUTC (pfile, c);
|
||
}
|
||
if (c == '\'')
|
||
{
|
||
CPP_RESERVE (pfile, 2);
|
||
CPP_PUTC_Q (pfile, c);
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
return CPP_STRING;
|
||
}
|
||
else
|
||
{
|
||
FORWARD(-1);
|
||
chill_number_eof:
|
||
CPP_NUL_TERMINATE (pfile);
|
||
return CPP_NUMBER;
|
||
}
|
||
}
|
||
else
|
||
goto letter;
|
||
case '_':
|
||
case 'a': case 'e': case 'f': case 'g': case 'i': case 'j':
|
||
case 'k': case 'l': case 'm': case 'n': case 'p': case 'q':
|
||
case 'r': case 's': case 't': case 'u': case 'v': case 'w':
|
||
case 'x': case 'y': case 'z':
|
||
case 'A': case 'E': case 'F': case 'G': case 'I': case 'J':
|
||
case 'K': case 'M': case 'N': case 'P': case 'Q': case 'R':
|
||
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
||
case 'Y': case 'Z':
|
||
letter:
|
||
{
|
||
HASHNODE *hp;
|
||
unsigned char *ident;
|
||
int before_name_written = CPP_WRITTEN (pfile);
|
||
int ident_len;
|
||
parse_name (pfile, c);
|
||
pfile->only_seen_white = 0;
|
||
if (pfile->no_macro_expand)
|
||
return CPP_NAME;
|
||
ident = pfile->token_buffer + before_name_written;
|
||
ident_len = CPP_PWRITTEN (pfile) - ident;
|
||
hp = cpp_lookup (pfile, ident, ident_len, -1);
|
||
if (!hp)
|
||
return CPP_NAME;
|
||
if (hp->type == T_DISABLED)
|
||
{
|
||
if (pfile->output_escapes)
|
||
{ /* Return "@-IDENT", followed by '\0'. */
|
||
int i;
|
||
CPP_RESERVE (pfile, 3);
|
||
ident = pfile->token_buffer + before_name_written;
|
||
CPP_ADJUST_WRITTEN (pfile, 2);
|
||
for (i = ident_len; i >= 0; i--) ident[i+2] = ident[i];
|
||
ident[0] = '@';
|
||
ident[1] = '-';
|
||
}
|
||
return CPP_NAME;
|
||
}
|
||
|
||
/* If macro wants an arglist, verify that a '(' follows.
|
||
first skip all whitespace, copying it to the output
|
||
after the macro name. Then, if there is no '(',
|
||
decide this is not a macro call and leave things that way. */
|
||
if (hp->type == T_MACRO && hp->value.defn->nargs >= 0)
|
||
{
|
||
struct parse_marker macro_mark;
|
||
int is_macro_call;
|
||
while (CPP_IS_MACRO_BUFFER (CPP_BUFFER (pfile)))
|
||
{
|
||
cpp_buffer *next_buf;
|
||
cpp_skip_hspace (pfile);
|
||
if (PEEKC () != EOF)
|
||
break;
|
||
next_buf = CPP_PREV_BUFFER (CPP_BUFFER (pfile));
|
||
(*CPP_BUFFER (pfile)->cleanup) (CPP_BUFFER (pfile), pfile);
|
||
CPP_BUFFER (pfile) = next_buf;
|
||
}
|
||
parse_set_mark (¯o_mark, pfile);
|
||
for (;;)
|
||
{
|
||
cpp_skip_hspace (pfile);
|
||
c = PEEKC ();
|
||
is_macro_call = c == '(';
|
||
if (c != '\n')
|
||
break;
|
||
FORWARD (1);
|
||
}
|
||
if (!is_macro_call)
|
||
parse_goto_mark (¯o_mark, pfile);
|
||
parse_clear_mark (¯o_mark);
|
||
if (!is_macro_call)
|
||
return CPP_NAME;
|
||
}
|
||
/* This is now known to be a macro call. */
|
||
|
||
/* it might not actually be a macro. */
|
||
if (hp->type != T_MACRO) {
|
||
int xbuf_len; U_CHAR *xbuf;
|
||
CPP_SET_WRITTEN (pfile, before_name_written);
|
||
special_symbol (hp, pfile);
|
||
xbuf_len = CPP_WRITTEN (pfile) - before_name_written;
|
||
xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
|
||
CPP_SET_WRITTEN (pfile, before_name_written);
|
||
bcopy (CPP_PWRITTEN (pfile), xbuf, xbuf_len + 1);
|
||
push_macro_expansion (pfile, xbuf, xbuf_len, hp);
|
||
}
|
||
else
|
||
{
|
||
/* Expand the macro, reading arguments as needed,
|
||
and push the expansion on the input stack. */
|
||
macroexpand (pfile, hp);
|
||
CPP_SET_WRITTEN (pfile, before_name_written);
|
||
}
|
||
|
||
/* An extra "@ " is added to the end of a macro expansion
|
||
to prevent accidental token pasting. We prefer to avoid
|
||
unneeded extra spaces (for the sake of cpp-using tools like
|
||
imake). Here we remove the space if it is safe to do so. */
|
||
if (pfile->buffer->rlimit - pfile->buffer->cur >= 3
|
||
&& pfile->buffer->rlimit[-2] == '@'
|
||
&& pfile->buffer->rlimit[-1] == ' ')
|
||
{
|
||
int c1 = pfile->buffer->rlimit[-3];
|
||
int c2 = CPP_BUF_PEEK (CPP_PREV_BUFFER (CPP_BUFFER (pfile)));
|
||
if (c2 == EOF || ! unsafe_chars (c1, c2))
|
||
pfile->buffer->rlimit -= 2;
|
||
}
|
||
}
|
||
goto get_next;
|
||
|
||
case ' ': case '\t': case '\v': case '\r':
|
||
for (;;)
|
||
{
|
||
CPP_PUTC (pfile, c);
|
||
c = PEEKC ();
|
||
if (c == EOF || !is_hor_space[c])
|
||
break;
|
||
FORWARD(1);
|
||
}
|
||
return CPP_HSPACE;
|
||
|
||
case '\\':
|
||
c2 = PEEKC ();
|
||
if (c2 != '\n')
|
||
goto randomchar;
|
||
token = CPP_HSPACE;
|
||
goto op2any;
|
||
|
||
case '\n':
|
||
CPP_PUTC (pfile, c);
|
||
if (pfile->only_seen_white == 0)
|
||
pfile->only_seen_white = 1;
|
||
pfile->lineno++;
|
||
output_line_command (pfile, 1, same_file);
|
||
return CPP_VSPACE;
|
||
|
||
case '(': token = CPP_LPAREN; goto char1;
|
||
case ')': token = CPP_RPAREN; goto char1;
|
||
case '{': token = CPP_LBRACE; goto char1;
|
||
case '}': token = CPP_RBRACE; goto char1;
|
||
case ',': token = CPP_COMMA; goto char1;
|
||
case ';': token = CPP_SEMICOLON; goto char1;
|
||
|
||
randomchar:
|
||
default:
|
||
token = CPP_OTHER;
|
||
char1:
|
||
pfile->only_seen_white = 0;
|
||
CPP_PUTC (pfile, c);
|
||
return token;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Like cpp_get_token, but skip spaces and comments. */
|
||
|
||
enum cpp_token
|
||
cpp_get_non_space_token (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
int old_written = CPP_WRITTEN (pfile);
|
||
for (;;)
|
||
{
|
||
enum cpp_token token = cpp_get_token (pfile);
|
||
if (token != CPP_COMMENT && token != CPP_POP
|
||
&& token != CPP_HSPACE && token != CPP_VSPACE)
|
||
return token;
|
||
CPP_SET_WRITTEN (pfile, old_written);
|
||
}
|
||
}
|
||
|
||
/* Parse an identifier starting with C. */
|
||
|
||
static int
|
||
parse_name (pfile, c)
|
||
cpp_reader *pfile; int c;
|
||
{
|
||
for (;;)
|
||
{
|
||
if (! is_idchar[c])
|
||
{
|
||
if (c == '\\' && PEEKC() == '\n')
|
||
{
|
||
FORWARD(2);
|
||
continue;
|
||
}
|
||
FORWARD (-1);
|
||
break;
|
||
}
|
||
|
||
if (c == '$' && CPP_PEDANTIC (pfile))
|
||
cpp_pedwarn (pfile, "`$' in identifier");
|
||
|
||
CPP_RESERVE(pfile, 2); /* One more for final NUL. */
|
||
CPP_PUTC_Q (pfile, c);
|
||
c = GETC();
|
||
if (c == EOF)
|
||
break;
|
||
}
|
||
CPP_NUL_TERMINATE_Q (pfile);
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* Maintain and search list of included files, for #import. */
|
||
|
||
/* Hash a file name for import_hash_table. */
|
||
|
||
static int
|
||
import_hash (f)
|
||
char *f;
|
||
{
|
||
int val = 0;
|
||
|
||
while (*f) val += *f++;
|
||
return (val%IMPORT_HASH_SIZE);
|
||
}
|
||
|
||
/* Search for file FILENAME in import_hash_table.
|
||
Return -2 if found, either a matching name or a matching inode.
|
||
Otherwise, open the file and return a file descriptor if successful
|
||
or -1 if unsuccessful. */
|
||
|
||
static int
|
||
lookup_import (pfile, filename, searchptr)
|
||
cpp_reader *pfile;
|
||
char *filename;
|
||
struct file_name_list *searchptr;
|
||
{
|
||
struct import_file *i;
|
||
int h;
|
||
int hashval;
|
||
struct stat sb;
|
||
int fd;
|
||
|
||
hashval = import_hash (filename);
|
||
|
||
/* Attempt to find file in list of already included files */
|
||
i = pfile->import_hash_table[hashval];
|
||
|
||
while (i) {
|
||
if (!strcmp (filename, i->name))
|
||
return -2; /* return found */
|
||
i = i->next;
|
||
}
|
||
/* Open it and try a match on inode/dev */
|
||
fd = open_include_file (pfile, filename, searchptr);
|
||
if (fd < 0)
|
||
return fd;
|
||
fstat (fd, &sb);
|
||
for (h = 0; h < IMPORT_HASH_SIZE; h++) {
|
||
i = pfile->import_hash_table[h];
|
||
while (i) {
|
||
/* Compare the inode and the device.
|
||
Supposedly on some systems the inode is not a scalar. */
|
||
if (!bcmp ((char *) &i->inode, (char *) &sb.st_ino, sizeof (sb.st_ino))
|
||
&& i->dev == sb.st_dev) {
|
||
close (fd);
|
||
return -2; /* return found */
|
||
}
|
||
i = i->next;
|
||
}
|
||
}
|
||
return fd; /* Not found, return open file */
|
||
}
|
||
|
||
/* Add the file FNAME, open on descriptor FD, to import_hash_table. */
|
||
|
||
static void
|
||
add_import (pfile, fd, fname)
|
||
cpp_reader *pfile;
|
||
int fd;
|
||
char *fname;
|
||
{
|
||
struct import_file *i;
|
||
int hashval;
|
||
struct stat sb;
|
||
|
||
hashval = import_hash (fname);
|
||
fstat (fd, &sb);
|
||
i = (struct import_file *)xmalloc (sizeof (struct import_file));
|
||
i->name = (char *)xmalloc (strlen (fname)+1);
|
||
strcpy (i->name, fname);
|
||
bcopy ((char *) &sb.st_ino, (char *) &i->inode, sizeof (sb.st_ino));
|
||
i->dev = sb.st_dev;
|
||
i->next = pfile->import_hash_table[hashval];
|
||
pfile->import_hash_table[hashval] = i;
|
||
}
|
||
|
||
/* The file_name_map structure holds a mapping of file names for a
|
||
particular directory. This mapping is read from the file named
|
||
FILE_NAME_MAP_FILE in that directory. Such a file can be used to
|
||
map filenames on a file system with severe filename restrictions,
|
||
such as DOS. The format of the file name map file is just a series
|
||
of lines with two tokens on each line. The first token is the name
|
||
to map, and the second token is the actual name to use. */
|
||
|
||
struct file_name_map
|
||
{
|
||
struct file_name_map *map_next;
|
||
char *map_from;
|
||
char *map_to;
|
||
};
|
||
|
||
#define FILE_NAME_MAP_FILE "header.gcc"
|
||
|
||
/* Read a space delimited string of unlimited length from a stdio
|
||
file. */
|
||
|
||
static char *
|
||
read_filename_string (ch, f)
|
||
int ch;
|
||
FILE *f;
|
||
{
|
||
char *alloc, *set;
|
||
int len;
|
||
|
||
len = 20;
|
||
set = alloc = xmalloc (len + 1);
|
||
if (! is_space[ch])
|
||
{
|
||
*set++ = ch;
|
||
while ((ch = getc (f)) != EOF && ! is_space[ch])
|
||
{
|
||
if (set - alloc == len)
|
||
{
|
||
len *= 2;
|
||
alloc = xrealloc (alloc, len + 1);
|
||
set = alloc + len / 2;
|
||
}
|
||
*set++ = ch;
|
||
}
|
||
}
|
||
*set = '\0';
|
||
ungetc (ch, f);
|
||
return alloc;
|
||
}
|
||
|
||
/* This structure holds a linked list of file name maps, one per directory. */
|
||
|
||
struct file_name_map_list
|
||
{
|
||
struct file_name_map_list *map_list_next;
|
||
char *map_list_name;
|
||
struct file_name_map *map_list_map;
|
||
};
|
||
|
||
/* Read the file name map file for DIRNAME. */
|
||
|
||
static struct file_name_map *
|
||
read_name_map (pfile, dirname)
|
||
cpp_reader *pfile;
|
||
char *dirname;
|
||
{
|
||
register struct file_name_map_list *map_list_ptr;
|
||
char *name;
|
||
FILE *f;
|
||
|
||
for (map_list_ptr = CPP_OPTIONS (pfile)->map_list; map_list_ptr;
|
||
map_list_ptr = map_list_ptr->map_list_next)
|
||
if (! strcmp (map_list_ptr->map_list_name, dirname))
|
||
return map_list_ptr->map_list_map;
|
||
|
||
map_list_ptr = ((struct file_name_map_list *)
|
||
xmalloc (sizeof (struct file_name_map_list)));
|
||
map_list_ptr->map_list_name = savestring (dirname);
|
||
map_list_ptr->map_list_map = NULL;
|
||
|
||
name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
|
||
strcpy (name, dirname);
|
||
if (*dirname)
|
||
strcat (name, "/");
|
||
strcat (name, FILE_NAME_MAP_FILE);
|
||
f = fopen (name, "r");
|
||
if (!f)
|
||
map_list_ptr->map_list_map = NULL;
|
||
else
|
||
{
|
||
int ch;
|
||
int dirlen = strlen (dirname);
|
||
|
||
while ((ch = getc (f)) != EOF)
|
||
{
|
||
char *from, *to;
|
||
struct file_name_map *ptr;
|
||
|
||
if (is_space[ch])
|
||
continue;
|
||
from = read_filename_string (ch, f);
|
||
while ((ch = getc (f)) != EOF && is_hor_space[ch])
|
||
;
|
||
to = read_filename_string (ch, f);
|
||
|
||
ptr = ((struct file_name_map *)
|
||
xmalloc (sizeof (struct file_name_map)));
|
||
ptr->map_from = from;
|
||
|
||
/* Make the real filename absolute. */
|
||
if (*to == '/')
|
||
ptr->map_to = to;
|
||
else
|
||
{
|
||
ptr->map_to = xmalloc (dirlen + strlen (to) + 2);
|
||
strcpy (ptr->map_to, dirname);
|
||
ptr->map_to[dirlen] = '/';
|
||
strcpy (ptr->map_to + dirlen + 1, to);
|
||
free (to);
|
||
}
|
||
|
||
ptr->map_next = map_list_ptr->map_list_map;
|
||
map_list_ptr->map_list_map = ptr;
|
||
|
||
while ((ch = getc (f)) != '\n')
|
||
if (ch == EOF)
|
||
break;
|
||
}
|
||
fclose (f);
|
||
}
|
||
|
||
map_list_ptr->map_list_next = CPP_OPTIONS (pfile)->map_list;
|
||
CPP_OPTIONS (pfile)->map_list = map_list_ptr;
|
||
|
||
return map_list_ptr->map_list_map;
|
||
}
|
||
|
||
/* Try to open include file FILENAME. SEARCHPTR is the directory
|
||
being tried from the include file search path. This function maps
|
||
filenames on file systems based on information read by
|
||
read_name_map. */
|
||
|
||
static int
|
||
open_include_file (pfile, filename, searchptr)
|
||
cpp_reader *pfile;
|
||
char *filename;
|
||
struct file_name_list *searchptr;
|
||
{
|
||
if (CPP_OPTIONS (pfile)->remap)
|
||
{
|
||
register struct file_name_map *map;
|
||
register char *from;
|
||
char *p, *dir;
|
||
|
||
if (searchptr && ! searchptr->got_name_map)
|
||
{
|
||
searchptr->name_map = read_name_map (pfile,
|
||
searchptr->fname
|
||
? searchptr->fname : ".");
|
||
searchptr->got_name_map = 1;
|
||
}
|
||
|
||
/* First check the mapping for the directory we are using. */
|
||
if (searchptr && searchptr->name_map)
|
||
{
|
||
from = filename;
|
||
if (searchptr->fname)
|
||
from += strlen (searchptr->fname) + 1;
|
||
for (map = searchptr->name_map; map; map = map->map_next)
|
||
{
|
||
if (! strcmp (map->map_from, from))
|
||
{
|
||
/* Found a match. */
|
||
return open (map->map_to, O_RDONLY, 0666);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Try to find a mapping file for the particular directory we are
|
||
looking in. Thus #include <sys/types.h> will look up sys/types.h
|
||
in /usr/include/header.gcc and look up types.h in
|
||
/usr/include/sys/header.gcc. */
|
||
p = rindex (filename, '/');
|
||
if (! p)
|
||
p = filename;
|
||
if (searchptr
|
||
&& searchptr->fname
|
||
&& strlen (searchptr->fname) == p - filename
|
||
&& ! strncmp (searchptr->fname, filename, p - filename))
|
||
{
|
||
/* FILENAME is in SEARCHPTR, which we've already checked. */
|
||
return open (filename, O_RDONLY, 0666);
|
||
}
|
||
|
||
if (p == filename)
|
||
{
|
||
dir = ".";
|
||
from = filename;
|
||
}
|
||
else
|
||
{
|
||
dir = (char *) alloca (p - filename + 1);
|
||
bcopy (filename, dir, p - filename);
|
||
dir[p - filename] = '\0';
|
||
from = p + 1;
|
||
}
|
||
for (map = read_name_map (pfile, dir); map; map = map->map_next)
|
||
if (! strcmp (map->map_from, from))
|
||
return open (map->map_to, O_RDONLY, 0666);
|
||
}
|
||
|
||
return open (filename, O_RDONLY, 0666);
|
||
}
|
||
|
||
/* Process the contents of include file FNAME, already open on descriptor F,
|
||
with output to OP.
|
||
SYSTEM_HEADER_P is 1 if this file resides in any one of the known
|
||
"system" include directories (as decided by the `is_system_include'
|
||
function above).
|
||
DIRPTR is the link in the dir path through which this file was found,
|
||
or 0 if the file name was absolute or via the current directory.
|
||
Return 1 on success, 0 on failure.
|
||
|
||
The caller is responsible for the cpp_push_buffer. */
|
||
|
||
static int
|
||
finclude (pfile, f, fname, system_header_p, dirptr)
|
||
cpp_reader *pfile;
|
||
int f;
|
||
char *fname;
|
||
int system_header_p;
|
||
struct file_name_list *dirptr;
|
||
{
|
||
struct stat st;
|
||
size_t st_size;
|
||
long i;
|
||
int length;
|
||
cpp_buffer *fp; /* For input stack frame */
|
||
#if 0
|
||
int missing_newline = 0;
|
||
#endif
|
||
|
||
if (fstat (f, &st) < 0)
|
||
{
|
||
cpp_perror_with_name (pfile, fname);
|
||
close (f);
|
||
cpp_pop_buffer (pfile);
|
||
return 0;
|
||
}
|
||
|
||
fp = CPP_BUFFER (pfile);
|
||
fp->nominal_fname = fp->fname = fname;
|
||
#if 0
|
||
fp->length = 0;
|
||
#endif
|
||
fp->dir = dirptr;
|
||
fp->system_header_p = system_header_p;
|
||
fp->lineno = 1;
|
||
fp->colno = 1;
|
||
fp->cleanup = file_cleanup;
|
||
|
||
if (S_ISREG (st.st_mode)) {
|
||
st_size = (size_t) st.st_size;
|
||
if (st_size != st.st_size || st_size + 2 < st_size) {
|
||
cpp_error (pfile, "file `%s' too large", fname);
|
||
close (f);
|
||
return 0;
|
||
}
|
||
fp->buf = (U_CHAR *) xmalloc (st_size + 2);
|
||
fp->alimit = fp->buf + st_size + 2;
|
||
fp->cur = fp->buf;
|
||
|
||
/* Read the file contents, knowing that st_size is an upper bound
|
||
on the number of bytes we can read. */
|
||
length = safe_read (f, fp->buf, st_size);
|
||
fp->rlimit = fp->buf + length;
|
||
if (length < 0) goto nope;
|
||
}
|
||
else if (S_ISDIR (st.st_mode)) {
|
||
cpp_error (pfile, "directory `%s' specified in #include", fname);
|
||
close (f);
|
||
return 0;
|
||
} else {
|
||
/* Cannot count its file size before reading.
|
||
First read the entire file into heap and
|
||
copy them into buffer on stack. */
|
||
|
||
int bsize = 2000;
|
||
|
||
st_size = 0;
|
||
fp->buf = (U_CHAR *) xmalloc (bsize + 2);
|
||
|
||
for (;;) {
|
||
i = safe_read (f, fp->buf + st_size, bsize - st_size);
|
||
if (i < 0)
|
||
goto nope; /* error! */
|
||
st_size += i;
|
||
if (st_size != bsize)
|
||
break; /* End of file */
|
||
bsize *= 2;
|
||
fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
|
||
}
|
||
fp->cur = fp->buf;
|
||
length = st_size;
|
||
}
|
||
|
||
if ((length > 0 && fp->buf[length - 1] != '\n')
|
||
/* Backslash-newline at end is not good enough. */
|
||
|| (length > 1 && fp->buf[length - 2] == '\\')) {
|
||
fp->buf[length++] = '\n';
|
||
#if 0
|
||
missing_newline = 1;
|
||
#endif
|
||
}
|
||
fp->buf[length] = '\0';
|
||
fp->rlimit = fp->buf + length;
|
||
|
||
/* Close descriptor now, so nesting does not use lots of descriptors. */
|
||
close (f);
|
||
|
||
/* Must do this before calling trigraph_pcp, so that the correct file name
|
||
will be printed in warning messages. */
|
||
|
||
pfile->input_stack_listing_current = 0;
|
||
|
||
#if 0
|
||
if (!no_trigraphs)
|
||
trigraph_pcp (fp);
|
||
#endif
|
||
|
||
#if 0
|
||
rescan (op, 0);
|
||
|
||
if (missing_newline)
|
||
fp->lineno--;
|
||
|
||
if (CPP_PEDANTIC (pfile) && missing_newline)
|
||
pedwarn ("file does not end in newline");
|
||
|
||
indepth--;
|
||
input_file_stack_tick++;
|
||
free (fp->buf);
|
||
#endif
|
||
return 1;
|
||
|
||
nope:
|
||
|
||
cpp_perror_with_name (pfile, fname);
|
||
close (f);
|
||
free (fp->buf);
|
||
return 1;
|
||
}
|
||
|
||
/* This is called after options have been processed.
|
||
* Check options for consistency, and setup for processing input
|
||
* from the file named FNAME. (Use standard input if FNAME==NULL.)
|
||
* Return 1 on success, 0 on failure.
|
||
*/
|
||
|
||
int
|
||
cpp_start_read (pfile, fname)
|
||
cpp_reader *pfile;
|
||
char *fname;
|
||
{
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
struct cpp_pending *pend;
|
||
char *p;
|
||
int f;
|
||
cpp_buffer *fp;
|
||
|
||
/* The code looks at the defaults through this pointer, rather than through
|
||
the constant structure above. This pointer gets changed if an environment
|
||
variable specifies other defaults. */
|
||
struct default_include *include_defaults = include_defaults_array;
|
||
|
||
/* Add dirs from CPATH after dirs from -I. */
|
||
/* There seems to be confusion about what CPATH should do,
|
||
so for the moment it is not documented. */
|
||
/* Some people say that CPATH should replace the standard include dirs,
|
||
but that seems pointless: it comes before them, so it overrides them
|
||
anyway. */
|
||
GET_ENVIRONMENT (p, "CPATH");
|
||
if (p != 0 && ! opts->no_standard_includes)
|
||
path_include (pfile, p);
|
||
|
||
/* Now that dollars_in_ident is known, initialize is_idchar. */
|
||
initialize_char_syntax (opts);
|
||
|
||
/* Do partial setup of input buffer for the sake of generating
|
||
early #line directives (when -g is in effect). */
|
||
fp = cpp_push_buffer (pfile, NULL, 0);
|
||
if (!fp)
|
||
return 0;
|
||
if (opts->in_fname == NULL)
|
||
opts->in_fname = "";
|
||
fp->nominal_fname = fp->fname = opts->in_fname;
|
||
fp->lineno = 0;
|
||
|
||
/* Install __LINE__, etc. Must follow initialize_char_syntax
|
||
and option processing. */
|
||
initialize_builtins (pfile);
|
||
|
||
/* Do standard #defines and assertions
|
||
that identify system and machine type. */
|
||
|
||
if (!opts->inhibit_predefs) {
|
||
char *p = (char *) alloca (strlen (predefs) + 1);
|
||
strcpy (p, predefs);
|
||
while (*p) {
|
||
char *q;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
/* Handle -D options. */
|
||
if (p[0] == '-' && p[1] == 'D') {
|
||
q = &p[2];
|
||
while (*p && *p != ' ' && *p != '\t')
|
||
p++;
|
||
if (*p != 0)
|
||
*p++= 0;
|
||
if (opts->debug_output)
|
||
output_line_command (pfile, 0, same_file);
|
||
cpp_define (pfile, q);
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
} else if (p[0] == '-' && p[1] == 'A') {
|
||
/* Handle -A options (assertions). */
|
||
char *assertion;
|
||
char *past_name;
|
||
char *value;
|
||
char *past_value;
|
||
char *termination;
|
||
int save_char;
|
||
|
||
assertion = &p[2];
|
||
past_name = assertion;
|
||
/* Locate end of name. */
|
||
while (*past_name && *past_name != ' '
|
||
&& *past_name != '\t' && *past_name != '(')
|
||
past_name++;
|
||
/* Locate `(' at start of value. */
|
||
value = past_name;
|
||
while (*value && (*value == ' ' || *value == '\t'))
|
||
value++;
|
||
if (*value++ != '(')
|
||
abort ();
|
||
while (*value && (*value == ' ' || *value == '\t'))
|
||
value++;
|
||
past_value = value;
|
||
/* Locate end of value. */
|
||
while (*past_value && *past_value != ' '
|
||
&& *past_value != '\t' && *past_value != ')')
|
||
past_value++;
|
||
termination = past_value;
|
||
while (*termination && (*termination == ' ' || *termination == '\t'))
|
||
termination++;
|
||
if (*termination++ != ')')
|
||
abort ();
|
||
if (*termination && *termination != ' ' && *termination != '\t')
|
||
abort ();
|
||
/* Temporarily null-terminate the value. */
|
||
save_char = *termination;
|
||
*termination = '\0';
|
||
/* Install the assertion. */
|
||
make_assertion (pfile, "-A", assertion);
|
||
*termination = (char) save_char;
|
||
p = termination;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
} else {
|
||
abort ();
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Now handle the command line options. */
|
||
|
||
/* Do -U's, -D's and -A's in the order they were seen. */
|
||
/* First reverse the list. */
|
||
opts->pending = nreverse_pending (opts->pending);
|
||
|
||
for (pend = opts->pending; pend; pend = pend->next)
|
||
{
|
||
if (pend->cmd != NULL && pend->cmd[0] == '-')
|
||
{
|
||
switch (pend->cmd[1])
|
||
{
|
||
case 'U':
|
||
if (opts->debug_output)
|
||
output_line_command (pfile, 0, same_file);
|
||
do_undef (pfile, NULL, pend->arg, pend->arg + strlen (pend->arg));
|
||
break;
|
||
case 'D':
|
||
if (opts->debug_output)
|
||
output_line_command (pfile, 0, same_file);
|
||
cpp_define (pfile, pend->arg);
|
||
break;
|
||
case 'A':
|
||
make_assertion (pfile, "-A", pend->arg);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
opts->done_initializing = 1;
|
||
|
||
{ /* Read the appropriate environment variable and if it exists
|
||
replace include_defaults with the listed path. */
|
||
char *epath = 0;
|
||
switch ((opts->objc << 1) + opts->cplusplus)
|
||
{
|
||
case 0:
|
||
GET_ENVIRONMENT (epath, "C_INCLUDE_PATH");
|
||
break;
|
||
case 1:
|
||
GET_ENVIRONMENT (epath, "CPLUS_INCLUDE_PATH");
|
||
break;
|
||
case 2:
|
||
GET_ENVIRONMENT (epath, "OBJC_INCLUDE_PATH");
|
||
break;
|
||
case 3:
|
||
GET_ENVIRONMENT (epath, "OBJCPLUS_INCLUDE_PATH");
|
||
break;
|
||
}
|
||
/* If the environment var for this language is set,
|
||
add to the default list of include directories. */
|
||
if (epath) {
|
||
char *nstore = (char *) alloca (strlen (epath) + 2);
|
||
int num_dirs;
|
||
char *startp, *endp;
|
||
|
||
for (num_dirs = 1, startp = epath; *startp; startp++)
|
||
if (*startp == PATH_SEPARATOR)
|
||
num_dirs++;
|
||
include_defaults
|
||
= (struct default_include *) xmalloc ((num_dirs
|
||
* sizeof (struct default_include))
|
||
+ sizeof (include_defaults_array));
|
||
startp = endp = epath;
|
||
num_dirs = 0;
|
||
while (1) {
|
||
/* Handle cases like c:/usr/lib:d:/gcc/lib */
|
||
if ((*endp == PATH_SEPARATOR)
|
||
|| *endp == 0) {
|
||
strncpy (nstore, startp, endp-startp);
|
||
if (endp == startp)
|
||
strcpy (nstore, ".");
|
||
else
|
||
nstore[endp-startp] = '\0';
|
||
|
||
include_defaults[num_dirs].fname = savestring (nstore);
|
||
include_defaults[num_dirs].component = 0;
|
||
include_defaults[num_dirs].cplusplus = opts->cplusplus;
|
||
include_defaults[num_dirs].cxx_aware = 1;
|
||
num_dirs++;
|
||
if (*endp == '\0')
|
||
break;
|
||
endp = startp = endp + 1;
|
||
} else
|
||
endp++;
|
||
}
|
||
/* Put the usual defaults back in at the end. */
|
||
bcopy ((char *) include_defaults_array,
|
||
(char *) &include_defaults[num_dirs],
|
||
sizeof (include_defaults_array));
|
||
}
|
||
}
|
||
|
||
append_include_chain (pfile, opts->before_system, opts->last_before_system);
|
||
opts->first_system_include = opts->before_system;
|
||
|
||
/* Unless -fnostdinc,
|
||
tack on the standard include file dirs to the specified list */
|
||
if (!opts->no_standard_includes) {
|
||
struct default_include *p = include_defaults;
|
||
char *specd_prefix = opts->include_prefix;
|
||
char *default_prefix = savestring (GCC_INCLUDE_DIR);
|
||
int default_len = 0;
|
||
/* Remove the `include' from /usr/local/lib/gcc.../include. */
|
||
if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
|
||
default_len = strlen (default_prefix) - 7;
|
||
default_prefix[default_len] = 0;
|
||
}
|
||
/* Search "translated" versions of GNU directories.
|
||
These have /usr/local/lib/gcc... replaced by specd_prefix. */
|
||
if (specd_prefix != 0 && default_len != 0)
|
||
for (p = include_defaults; p->fname; p++) {
|
||
/* Some standard dirs are only for C++. */
|
||
if (!p->cplusplus
|
||
|| (opts->cplusplus && !opts->no_standard_cplusplus_includes)) {
|
||
/* Does this dir start with the prefix? */
|
||
if (!strncmp (p->fname, default_prefix, default_len)) {
|
||
/* Yes; change prefix and add to search list. */
|
||
struct file_name_list *new
|
||
= (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
|
||
int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
|
||
char *str = (char *) xmalloc (this_len + 1);
|
||
strcpy (str, specd_prefix);
|
||
strcat (str, p->fname + default_len);
|
||
new->fname = str;
|
||
new->control_macro = 0;
|
||
new->c_system_include_path = !p->cxx_aware;
|
||
new->got_name_map = 0;
|
||
append_include_chain (pfile, new, new);
|
||
if (opts->first_system_include == 0)
|
||
opts->first_system_include = new;
|
||
}
|
||
}
|
||
}
|
||
/* Search ordinary names for GNU include directories. */
|
||
for (p = include_defaults; p->fname; p++) {
|
||
/* Some standard dirs are only for C++. */
|
||
if (!p->cplusplus
|
||
|| (opts->cplusplus && !opts->no_standard_cplusplus_includes)) {
|
||
struct file_name_list *new
|
||
= (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
|
||
new->control_macro = 0;
|
||
new->c_system_include_path = !p->cxx_aware;
|
||
new->fname = update_path (p->fname, p->component);
|
||
new->got_name_map = 0;
|
||
append_include_chain (pfile, new, new);
|
||
if (opts->first_system_include == 0)
|
||
opts->first_system_include = new;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Tack the after_include chain at the end of the include chain. */
|
||
append_include_chain (pfile, opts->after_include, opts->last_after_include);
|
||
if (opts->first_system_include == 0)
|
||
opts->first_system_include = opts->after_include;
|
||
|
||
/* With -v, print the list of dirs to search. */
|
||
if (opts->verbose) {
|
||
struct file_name_list *p;
|
||
fprintf (stderr, "#include \"...\" search starts here:\n");
|
||
for (p = opts->include; p; p = p->next) {
|
||
if (p == opts->first_bracket_include)
|
||
fprintf (stderr, "#include <...> search starts here:\n");
|
||
fprintf (stderr, " %s\n", p->fname);
|
||
}
|
||
fprintf (stderr, "End of search list.\n");
|
||
}
|
||
|
||
/* Scan the -imacros files before the main input.
|
||
Much like #including them, but with no_output set
|
||
so that only their macro definitions matter. */
|
||
|
||
opts->no_output++; pfile->no_record_file++;
|
||
for (pend = opts->pending; pend; pend = pend->next)
|
||
{
|
||
if (pend->cmd != NULL && strcmp (pend->cmd, "-imacros") == 0)
|
||
{
|
||
int fd = open (pend->arg, O_RDONLY, 0666);
|
||
if (fd < 0)
|
||
{
|
||
cpp_perror_with_name (pfile, pend->arg);
|
||
return 0;
|
||
}
|
||
if (!cpp_push_buffer (pfile, NULL, 0))
|
||
return 0;
|
||
finclude (pfile, fd, pend->arg, 0, NULL_PTR);
|
||
cpp_scan_buffer (pfile);
|
||
}
|
||
}
|
||
opts->no_output--; pfile->no_record_file--;
|
||
|
||
/* Copy the entire contents of the main input file into
|
||
the stacked input buffer previously allocated for it. */
|
||
if (fname == NULL || *fname == 0) {
|
||
fname = "";
|
||
f = 0;
|
||
} else if ((f = open (fname, O_RDONLY, 0666)) < 0)
|
||
cpp_pfatal_with_name (pfile, fname);
|
||
|
||
/* -MG doesn't select the form of output and must be specified with one of
|
||
-M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
|
||
inhibit compilation. */
|
||
if (opts->print_deps_missing_files
|
||
&& (opts->print_deps == 0 || !opts->no_output))
|
||
{
|
||
cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
|
||
return 0;
|
||
}
|
||
|
||
/* Either of two environment variables can specify output of deps.
|
||
Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
|
||
where OUTPUT_FILE is the file to write deps info to
|
||
and DEPS_TARGET is the target to mention in the deps. */
|
||
|
||
if (opts->print_deps == 0
|
||
&& (getenv ("SUNPRO_DEPENDENCIES") != 0
|
||
|| getenv ("DEPENDENCIES_OUTPUT") != 0)) {
|
||
char *spec = getenv ("DEPENDENCIES_OUTPUT");
|
||
char *s;
|
||
char *output_file;
|
||
|
||
if (spec == 0)
|
||
{
|
||
spec = getenv ("SUNPRO_DEPENDENCIES");
|
||
opts->print_deps = 2;
|
||
}
|
||
else
|
||
opts->print_deps = 1;
|
||
|
||
s = spec;
|
||
/* Find the space before the DEPS_TARGET, if there is one. */
|
||
/* This should use index. (mrs) */
|
||
while (*s != 0 && *s != ' ') s++;
|
||
if (*s != 0)
|
||
{
|
||
opts->deps_target = s + 1;
|
||
output_file = (char *) xmalloc (s - spec + 1);
|
||
bcopy (spec, output_file, s - spec);
|
||
output_file[s - spec] = 0;
|
||
}
|
||
else
|
||
{
|
||
opts->deps_target = 0;
|
||
output_file = spec;
|
||
}
|
||
|
||
opts->deps_file = output_file;
|
||
opts->print_deps_append = 1;
|
||
}
|
||
|
||
/* For -M, print the expected object file name
|
||
as the target of this Make-rule. */
|
||
if (opts->print_deps)
|
||
{
|
||
pfile->deps_allocated_size = 200;
|
||
pfile->deps_buffer = (char *) xmalloc (pfile->deps_allocated_size);
|
||
pfile->deps_buffer[0] = 0;
|
||
pfile->deps_size = 0;
|
||
pfile->deps_column = 0;
|
||
|
||
if (opts->deps_target)
|
||
deps_output (pfile, opts->deps_target, ':');
|
||
else if (*opts->in_fname == 0)
|
||
deps_output (pfile, "-", ':');
|
||
else
|
||
{
|
||
char *p, *q, *r;
|
||
int len, x;
|
||
static char *known_suffixes[] = { ".c", ".C", ".s", ".S", ".m",
|
||
".cc", ".cxx", ".cpp", ".cp",
|
||
".c++", 0
|
||
};
|
||
|
||
/* Discard all directory prefixes from filename. */
|
||
if ((q = rindex (opts->in_fname, '/')) != NULL
|
||
#ifdef DIR_SEPARATOR
|
||
&& (q = rindex (opts->in_fname, DIR_SEPARATOR)) != NULL
|
||
#endif
|
||
)
|
||
++q;
|
||
else
|
||
q = opts->in_fname;
|
||
|
||
/* Copy remainder to mungable area. */
|
||
p = (char *) alloca (strlen(q) + 8);
|
||
strcpy (p, q);
|
||
|
||
/* Output P, but remove known suffixes. */
|
||
len = strlen (p);
|
||
q = p + len;
|
||
/* Point to the filename suffix. */
|
||
r = rindex (p, '.');
|
||
/* Compare against the known suffixes. */
|
||
x = 0;
|
||
while (known_suffixes[x] != 0)
|
||
{
|
||
if (strncmp (known_suffixes[x], r, q - r) == 0)
|
||
{
|
||
/* Make q point to the bit we're going to overwrite
|
||
with an object suffix. */
|
||
q = r;
|
||
break;
|
||
}
|
||
x++;
|
||
}
|
||
|
||
/* Supply our own suffix. */
|
||
#ifndef VMS
|
||
strcpy (q, ".o");
|
||
#else
|
||
strcpy (q, ".obj");
|
||
#endif
|
||
|
||
deps_output (pfile, p, ':');
|
||
deps_output (pfile, opts->in_fname, ' ');
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* Make sure data ends with a newline. And put a null after it. */
|
||
|
||
if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
|
||
/* Backslash-newline at end is not good enough. */
|
||
|| (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
|
||
fp->buf[fp->length++] = '\n';
|
||
missing_newline = 1;
|
||
}
|
||
fp->buf[fp->length] = '\0';
|
||
|
||
/* Unless inhibited, convert trigraphs in the input. */
|
||
|
||
if (!no_trigraphs)
|
||
trigraph_pcp (fp);
|
||
#endif
|
||
|
||
/* Scan the -include files before the main input.
|
||
We push these in reverse order, so that the first one is handled first. */
|
||
|
||
pfile->no_record_file++;
|
||
opts->pending = nreverse_pending (opts->pending);
|
||
for (pend = opts->pending; pend; pend = pend->next)
|
||
{
|
||
if (pend->cmd != NULL && strcmp (pend->cmd, "-include") == 0)
|
||
{
|
||
int fd = open (pend->arg, O_RDONLY, 0666);
|
||
if (fd < 0)
|
||
{
|
||
cpp_perror_with_name (pfile, pend->arg);
|
||
return 0;
|
||
}
|
||
if (!cpp_push_buffer (pfile, NULL, 0))
|
||
return 0;
|
||
finclude (pfile, fd, pend->arg, 0, NULL_PTR);
|
||
}
|
||
}
|
||
pfile->no_record_file--;
|
||
|
||
/* Free the pending list. */
|
||
for (pend = opts->pending; pend; )
|
||
{
|
||
struct cpp_pending *next = pend->next;
|
||
free (pend);
|
||
pend = next;
|
||
}
|
||
opts->pending = NULL;
|
||
|
||
#if 0
|
||
/* Scan the input, processing macros and directives. */
|
||
|
||
rescan (&outbuf, 0);
|
||
|
||
if (missing_newline)
|
||
fp->lineno--;
|
||
|
||
if (CPP_PEDANTIC (pfile) && missing_newline)
|
||
pedwarn ("file does not end in newline");
|
||
|
||
#endif
|
||
if (finclude (pfile, f, fname, 0, NULL_PTR))
|
||
output_line_command (pfile, 0, same_file);
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
cpp_reader_init (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
bzero ((char *) pfile, sizeof (cpp_reader));
|
||
pfile->get_token = cpp_get_token;
|
||
|
||
pfile->token_buffer_size = 200;
|
||
pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
|
||
CPP_SET_WRITTEN (pfile, 0);
|
||
|
||
pfile->system_include_depth = 0;
|
||
pfile->dont_repeat_files = 0;
|
||
pfile->all_include_files = 0;
|
||
pfile->max_include_len = 0;
|
||
pfile->timebuf = NULL;
|
||
pfile->only_seen_white = 1;
|
||
pfile->buffer = CPP_NULL_BUFFER(pfile);
|
||
}
|
||
|
||
static struct cpp_pending *
|
||
nreverse_pending (list)
|
||
struct cpp_pending *list;
|
||
|
||
{
|
||
register struct cpp_pending *prev = 0, *next, *pend;
|
||
for (pend = list; pend; pend = next)
|
||
{
|
||
next = pend->next;
|
||
pend->next = prev;
|
||
prev = pend;
|
||
}
|
||
return prev;
|
||
}
|
||
|
||
static void
|
||
push_pending (pfile, cmd, arg)
|
||
cpp_reader *pfile;
|
||
char *cmd;
|
||
char *arg;
|
||
{
|
||
struct cpp_pending *pend
|
||
= (struct cpp_pending *) xmalloc (sizeof (struct cpp_pending));
|
||
pend->cmd = cmd;
|
||
pend->arg = arg;
|
||
pend->next = CPP_OPTIONS (pfile)->pending;
|
||
CPP_OPTIONS (pfile)->pending = pend;
|
||
}
|
||
|
||
|
||
static void
|
||
print_help ()
|
||
{
|
||
printf ("Usage: %s [switches] input output\n", progname);
|
||
printf ("Switches:\n");
|
||
printf (" -include <file> Include the contents of <file> before other files\n");
|
||
printf (" -imacros <file> Accept definition of marcos in <file>\n");
|
||
printf (" -iprefix <path> Specify <path> as a prefix for next two options\n");
|
||
printf (" -iwithprefix <dir> Add <dir> to the end of the system include paths\n");
|
||
printf (" -iwithprefixbefore <dir> Add <dir> to the end of the main include paths\n");
|
||
printf (" -isystem <dir> Add <dir> to the start of the system include paths\n");
|
||
printf (" -idirafter <dir> Add <dir> to the end of the system include paths\n");
|
||
printf (" -I <dir> Add <dir> to the end of the main include paths\n");
|
||
printf (" -nostdinc Do not search the system include directories\n");
|
||
printf (" -nostdinc++ Do not search the system include directories for C++\n");
|
||
printf (" -o <file> Put output into <file>\n");
|
||
printf (" -pedantic Issue all warnings demanded by strict ANSI C\n");
|
||
printf (" -traditional Follow K&R pre-processor behaviour\n");
|
||
printf (" -trigraphs Support ANSI C trigraphs\n");
|
||
printf (" -lang-c Assume that the input sources are in C\n");
|
||
printf (" -lang-c89 Assume that the input sources are in C89\n");
|
||
printf (" -lang-c++ Assume that the input sources are in C++\n");
|
||
printf (" -lang-objc Assume that the input sources are in ObjectiveC\n");
|
||
printf (" -lang-objc++ Assume that the input sources are in ObjectiveC++\n");
|
||
printf (" -lang-asm Assume that the input sources are in assembler\n");
|
||
printf (" -lang-chill Assume that the input sources are in Chill\n");
|
||
printf (" -+ Allow parsing of C++ style features\n");
|
||
printf (" -w Inhibit warning messages\n");
|
||
printf (" -Wtrigraphs Warn if trigraphs are encountered\n");
|
||
printf (" -Wno-trigraphs Do not warn about trigraphs\n");
|
||
printf (" -Wcomment{s} Warn if one comment starts inside another\n");
|
||
printf (" -Wno-comment{s} Do not warn about comments\n");
|
||
printf (" -Wtraditional Warn if a macro argument is/would be turned into\n");
|
||
printf (" a string if -tradtional is specified\n");
|
||
printf (" -Wno-traditional Do not warn about stringification\n");
|
||
printf (" -Wundef Warn if an undefined macro is used by #if\n");
|
||
printf (" -Wno-undef Do not warn about testing udefined macros\n");
|
||
printf (" -Wimport Warn about the use of the #import directive\n");
|
||
printf (" -Wno-import Do not warn about the use of #import\n");
|
||
printf (" -Werror Treat all warnings as errors\n");
|
||
printf (" -Wno-error Do not treat warnings as errors\n");
|
||
printf (" -Wall Enable all preprocessor warnings\n");
|
||
printf (" -M Generate make dependencies\n");
|
||
printf (" -MM As -M, but ignore system header files\n");
|
||
printf (" -MD As -M, but put output in a .d file\n");
|
||
printf (" -MMD As -MD, but ignore system header files\n");
|
||
printf (" -MG Treat missing header file as generated files\n");
|
||
printf (" -g Include #define and #undef directives in the output\n");
|
||
printf (" -D<macro> Define a <macro> with string '1' as its value\n");
|
||
printf (" -D<macro>=<val> Define a <macro> with <val> as its value\n");
|
||
printf (" -A<question> (<answer>) Assert the <answer> to <question>\n");
|
||
printf (" -U<macro> Undefine <macro> \n");
|
||
printf (" -u or -undef Do not predefine any macros\n");
|
||
printf (" -v Display the version number\n");
|
||
printf (" -H Print the name of header files as they are used\n");
|
||
printf (" -C Do not discard comments\n");
|
||
printf (" -dM Display a list of macro definitions active at end\n");
|
||
printf (" -dD Preserve macro definitions in output\n");
|
||
printf (" -dN As -dD except that only the names are preserved\n");
|
||
printf (" -dI Include #include directives in the output\n");
|
||
printf (" -ifoutput Describe skipped code blocks in output \n");
|
||
printf (" -P Do not generate #line directives\n");
|
||
printf (" -$ Do not include '$' in identifiers\n");
|
||
printf (" -remap Remap file names when including files.\n");
|
||
printf (" -h or --help Display this information\n");
|
||
}
|
||
|
||
|
||
/* Handle one command-line option in (argc, argv).
|
||
Can be called multiple times, to handle multiple sets of options.
|
||
Returns number of strings consumed. */
|
||
int
|
||
cpp_handle_option (pfile, argc, argv)
|
||
cpp_reader *pfile;
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
int i = 0;
|
||
if (argv[i][0] != '-') {
|
||
if (opts->out_fname != NULL)
|
||
{
|
||
print_help ();
|
||
cpp_fatal (pfile, "Too many arguments");
|
||
}
|
||
else if (opts->in_fname != NULL)
|
||
opts->out_fname = argv[i];
|
||
else
|
||
opts->in_fname = argv[i];
|
||
} else {
|
||
switch (argv[i][1]) {
|
||
|
||
missing_filename:
|
||
cpp_fatal (pfile, "Filename missing after `%s' option", argv[i]);
|
||
return argc;
|
||
missing_dirname:
|
||
cpp_fatal (pfile, "Directory name missing after `%s' option", argv[i]);
|
||
return argc;
|
||
|
||
case 'i':
|
||
if (!strcmp (argv[i], "-include")
|
||
|| !strcmp (argv[i], "-imacros")) {
|
||
if (i + 1 == argc)
|
||
goto missing_filename;
|
||
else
|
||
push_pending (pfile, argv[i], argv[i+1]), i++;
|
||
}
|
||
if (!strcmp (argv[i], "-iprefix")) {
|
||
if (i + 1 == argc)
|
||
goto missing_filename;
|
||
else
|
||
opts->include_prefix = argv[++i];
|
||
}
|
||
if (!strcmp (argv[i], "-ifoutput")) {
|
||
opts->output_conditionals = 1;
|
||
}
|
||
if (!strcmp (argv[i], "-isystem")) {
|
||
struct file_name_list *dirtmp;
|
||
|
||
if (i + 1 == argc)
|
||
goto missing_filename;
|
||
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0;
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 1;
|
||
dirtmp->fname = (char *) xmalloc (strlen (argv[i+1]) + 1);
|
||
strcpy (dirtmp->fname, argv[++i]);
|
||
dirtmp->got_name_map = 0;
|
||
|
||
if (opts->before_system == 0)
|
||
opts->before_system = dirtmp;
|
||
else
|
||
opts->last_before_system->next = dirtmp;
|
||
opts->last_before_system = dirtmp; /* Tail follows the last one */
|
||
}
|
||
/* Add directory to end of path for includes,
|
||
with the default prefix at the front of its name. */
|
||
if (!strcmp (argv[i], "-iwithprefix")) {
|
||
struct file_name_list *dirtmp;
|
||
char *prefix;
|
||
|
||
if (opts->include_prefix != 0)
|
||
prefix = opts->include_prefix;
|
||
else {
|
||
prefix = savestring (GCC_INCLUDE_DIR);
|
||
/* Remove the `include' from /usr/local/lib/gcc.../include. */
|
||
if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
|
||
prefix[strlen (prefix) - 7] = 0;
|
||
}
|
||
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0; /* New one goes on the end */
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 0;
|
||
if (i + 1 == argc)
|
||
goto missing_dirname;
|
||
|
||
dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
|
||
+ strlen (prefix) + 1);
|
||
strcpy (dirtmp->fname, prefix);
|
||
strcat (dirtmp->fname, argv[++i]);
|
||
dirtmp->got_name_map = 0;
|
||
|
||
if (opts->after_include == 0)
|
||
opts->after_include = dirtmp;
|
||
else
|
||
opts->last_after_include->next = dirtmp;
|
||
opts->last_after_include = dirtmp; /* Tail follows the last one */
|
||
}
|
||
/* Add directory to main path for includes,
|
||
with the default prefix at the front of its name. */
|
||
if (!strcmp (argv[i], "-iwithprefixbefore")) {
|
||
struct file_name_list *dirtmp;
|
||
char *prefix;
|
||
|
||
if (opts->include_prefix != 0)
|
||
prefix = opts->include_prefix;
|
||
else {
|
||
prefix = savestring (GCC_INCLUDE_DIR);
|
||
/* Remove the `include' from /usr/local/lib/gcc.../include. */
|
||
if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
|
||
prefix[strlen (prefix) - 7] = 0;
|
||
}
|
||
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0; /* New one goes on the end */
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 0;
|
||
if (i + 1 == argc)
|
||
goto missing_dirname;
|
||
|
||
dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
|
||
+ strlen (prefix) + 1);
|
||
strcpy (dirtmp->fname, prefix);
|
||
strcat (dirtmp->fname, argv[++i]);
|
||
dirtmp->got_name_map = 0;
|
||
|
||
append_include_chain (pfile, dirtmp, dirtmp);
|
||
}
|
||
/* Add directory to end of path for includes. */
|
||
if (!strcmp (argv[i], "-idirafter")) {
|
||
struct file_name_list *dirtmp;
|
||
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0; /* New one goes on the end */
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 0;
|
||
if (i + 1 == argc)
|
||
goto missing_dirname;
|
||
else
|
||
dirtmp->fname = argv[++i];
|
||
dirtmp->got_name_map = 0;
|
||
|
||
if (opts->after_include == 0)
|
||
opts->after_include = dirtmp;
|
||
else
|
||
opts->last_after_include->next = dirtmp;
|
||
opts->last_after_include = dirtmp; /* Tail follows the last one */
|
||
}
|
||
break;
|
||
|
||
case 'o':
|
||
if (opts->out_fname != NULL)
|
||
{
|
||
cpp_fatal (pfile, "Output filename specified twice");
|
||
return argc;
|
||
}
|
||
if (i + 1 == argc)
|
||
goto missing_filename;
|
||
opts->out_fname = argv[++i];
|
||
if (!strcmp (opts->out_fname, "-"))
|
||
opts->out_fname = "";
|
||
break;
|
||
|
||
case 'p':
|
||
if (!strcmp (argv[i], "-pedantic"))
|
||
CPP_PEDANTIC (pfile) = 1;
|
||
else if (!strcmp (argv[i], "-pedantic-errors")) {
|
||
CPP_PEDANTIC (pfile) = 1;
|
||
opts->pedantic_errors = 1;
|
||
}
|
||
#if 0
|
||
else if (!strcmp (argv[i], "-pcp")) {
|
||
char *pcp_fname = argv[++i];
|
||
pcp_outfile = ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
|
||
? fopen (pcp_fname, "w")
|
||
: fdopen (dup (fileno (stdout)), "w"));
|
||
if (pcp_outfile == 0)
|
||
cpp_pfatal_with_name (pfile, pcp_fname);
|
||
no_precomp = 1;
|
||
}
|
||
#endif
|
||
break;
|
||
|
||
case 't':
|
||
if (!strcmp (argv[i], "-traditional")) {
|
||
opts->traditional = 1;
|
||
opts->cplusplus_comments = 0;
|
||
} else if (!strcmp (argv[i], "-trigraphs")) {
|
||
if (!opts->chill)
|
||
opts->no_trigraphs = 0;
|
||
}
|
||
break;
|
||
|
||
case 'l':
|
||
if (! strcmp (argv[i], "-lang-c"))
|
||
opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
|
||
opts->objc = 0;
|
||
if (! strcmp (argv[i], "-lang-c89"))
|
||
opts->cplusplus = 0, opts->cplusplus_comments = 0, opts->c89 = 1,
|
||
opts->objc = 0;
|
||
if (! strcmp (argv[i], "-lang-c++"))
|
||
opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
|
||
opts->objc = 0;
|
||
if (! strcmp (argv[i], "-lang-objc"))
|
||
opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
|
||
opts->objc = 1;
|
||
if (! strcmp (argv[i], "-lang-objc++"))
|
||
opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
|
||
opts->objc = 1;
|
||
if (! strcmp (argv[i], "-lang-asm"))
|
||
opts->lang_asm = 1;
|
||
if (! strcmp (argv[i], "-lint"))
|
||
opts->for_lint = 1;
|
||
if (! strcmp (argv[i], "-lang-chill"))
|
||
opts->objc = 0, opts->cplusplus = 0, opts->chill = 1,
|
||
opts->traditional = 1, opts->no_trigraphs = 1;
|
||
break;
|
||
|
||
case '+':
|
||
opts->cplusplus = 1, opts->cplusplus_comments = 1;
|
||
break;
|
||
|
||
case 'w':
|
||
opts->inhibit_warnings = 1;
|
||
break;
|
||
|
||
case 'W':
|
||
if (!strcmp (argv[i], "-Wtrigraphs"))
|
||
opts->warn_trigraphs = 1;
|
||
else if (!strcmp (argv[i], "-Wno-trigraphs"))
|
||
opts->warn_trigraphs = 0;
|
||
else if (!strcmp (argv[i], "-Wcomment"))
|
||
opts->warn_comments = 1;
|
||
else if (!strcmp (argv[i], "-Wno-comment"))
|
||
opts->warn_comments = 0;
|
||
else if (!strcmp (argv[i], "-Wcomments"))
|
||
opts->warn_comments = 1;
|
||
else if (!strcmp (argv[i], "-Wno-comments"))
|
||
opts->warn_comments = 0;
|
||
else if (!strcmp (argv[i], "-Wtraditional"))
|
||
opts->warn_stringify = 1;
|
||
else if (!strcmp (argv[i], "-Wno-traditional"))
|
||
opts->warn_stringify = 0;
|
||
else if (!strcmp (argv[i], "-Wundef"))
|
||
opts->warn_undef = 1;
|
||
else if (!strcmp (argv[i], "-Wno-undef"))
|
||
opts->warn_undef = 0;
|
||
else if (!strcmp (argv[i], "-Wimport"))
|
||
opts->warn_import = 1;
|
||
else if (!strcmp (argv[i], "-Wno-import"))
|
||
opts->warn_import = 0;
|
||
else if (!strcmp (argv[i], "-Werror"))
|
||
opts->warnings_are_errors = 1;
|
||
else if (!strcmp (argv[i], "-Wno-error"))
|
||
opts->warnings_are_errors = 0;
|
||
else if (!strcmp (argv[i], "-Wall"))
|
||
{
|
||
opts->warn_trigraphs = 1;
|
||
opts->warn_comments = 1;
|
||
}
|
||
break;
|
||
|
||
case 'M':
|
||
/* The style of the choices here is a bit mixed.
|
||
The chosen scheme is a hybrid of keeping all options in one string
|
||
and specifying each option in a separate argument:
|
||
-M|-MM|-MD file|-MMD file [-MG]. An alternative is:
|
||
-M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
|
||
-M[M][G][D file]. This is awkward to handle in specs, and is not
|
||
as extensible. */
|
||
/* ??? -MG must be specified in addition to one of -M or -MM.
|
||
This can be relaxed in the future without breaking anything.
|
||
The converse isn't true. */
|
||
|
||
/* -MG isn't valid with -MD or -MMD. This is checked for later. */
|
||
if (!strcmp (argv[i], "-MG"))
|
||
{
|
||
opts->print_deps_missing_files = 1;
|
||
break;
|
||
}
|
||
if (!strcmp (argv[i], "-M"))
|
||
opts->print_deps = 2;
|
||
else if (!strcmp (argv[i], "-MM"))
|
||
opts->print_deps = 1;
|
||
else if (!strcmp (argv[i], "-MD"))
|
||
opts->print_deps = 2;
|
||
else if (!strcmp (argv[i], "-MMD"))
|
||
opts->print_deps = 1;
|
||
/* For -MD and -MMD options, write deps on file named by next arg. */
|
||
if (!strcmp (argv[i], "-MD") || !strcmp (argv[i], "-MMD"))
|
||
{
|
||
if (i+1 == argc)
|
||
goto missing_filename;
|
||
opts->deps_file = argv[++i];
|
||
}
|
||
else
|
||
{
|
||
/* For -M and -MM, write deps on standard output
|
||
and suppress the usual output. */
|
||
opts->no_output = 1;
|
||
}
|
||
break;
|
||
|
||
case 'd':
|
||
{
|
||
char *p = argv[i] + 2;
|
||
char c;
|
||
while ((c = *p++) != 0) {
|
||
/* Arg to -d specifies what parts of macros to dump */
|
||
switch (c) {
|
||
case 'M':
|
||
opts->dump_macros = dump_only;
|
||
opts->no_output = 1;
|
||
break;
|
||
case 'N':
|
||
opts->dump_macros = dump_names;
|
||
break;
|
||
case 'D':
|
||
opts->dump_macros = dump_definitions;
|
||
break;
|
||
case 'I':
|
||
opts->dump_includes = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'g':
|
||
if (argv[i][2] == '3')
|
||
opts->debug_output = 1;
|
||
break;
|
||
|
||
case '-':
|
||
if (strcmp (argv[i], "--help") != 0)
|
||
return i;
|
||
print_help ();
|
||
break;
|
||
|
||
case 'v':
|
||
fprintf (stderr, "GNU CPP version %s", version_string);
|
||
#ifdef TARGET_VERSION
|
||
TARGET_VERSION;
|
||
#endif
|
||
fprintf (stderr, "\n");
|
||
opts->verbose = 1;
|
||
break;
|
||
|
||
case 'H':
|
||
opts->print_include_names = 1;
|
||
break;
|
||
|
||
case 'D':
|
||
if (argv[i][2] != 0)
|
||
push_pending (pfile, "-D", argv[i] + 2);
|
||
else if (i + 1 == argc)
|
||
{
|
||
cpp_fatal (pfile, "Macro name missing after -D option");
|
||
return argc;
|
||
}
|
||
else
|
||
i++, push_pending (pfile, "-D", argv[i]);
|
||
break;
|
||
|
||
case 'A':
|
||
{
|
||
char *p;
|
||
|
||
if (argv[i][2] != 0)
|
||
p = argv[i] + 2;
|
||
else if (i + 1 == argc)
|
||
{
|
||
cpp_fatal (pfile, "Assertion missing after -A option");
|
||
return argc;
|
||
}
|
||
else
|
||
p = argv[++i];
|
||
|
||
if (!strcmp (p, "-")) {
|
||
struct cpp_pending **ptr;
|
||
/* -A- eliminates all predefined macros and assertions.
|
||
Let's include also any that were specified earlier
|
||
on the command line. That way we can get rid of any
|
||
that were passed automatically in from GCC. */
|
||
opts->inhibit_predefs = 1;
|
||
for (ptr = &opts->pending; *ptr != NULL; )
|
||
{
|
||
struct cpp_pending *pend = *ptr;
|
||
if (pend->cmd && pend->cmd[0] == '-'
|
||
&& (pend->cmd[1] == 'D' || pend->cmd[1] == 'A'))
|
||
{
|
||
*ptr = pend->next;
|
||
free (pend);
|
||
}
|
||
else
|
||
ptr = &pend->next;
|
||
}
|
||
} else {
|
||
push_pending (pfile, "-A", p);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'U': /* JF #undef something */
|
||
if (argv[i][2] != 0)
|
||
push_pending (pfile, "-U", argv[i] + 2);
|
||
else if (i + 1 == argc)
|
||
{
|
||
cpp_fatal (pfile, "Macro name missing after -U option");
|
||
return argc;
|
||
}
|
||
else
|
||
push_pending (pfile, "-U", argv[i+1]), i++;
|
||
break;
|
||
|
||
case 'C':
|
||
opts->put_out_comments = 1;
|
||
break;
|
||
|
||
case 'E': /* -E comes from cc -E; ignore it. */
|
||
break;
|
||
|
||
case 'P':
|
||
opts->no_line_commands = 1;
|
||
break;
|
||
|
||
case '$': /* Don't include $ in identifiers. */
|
||
opts->dollars_in_ident = 0;
|
||
break;
|
||
|
||
case 'I': /* Add directory to path for includes. */
|
||
{
|
||
struct file_name_list *dirtmp;
|
||
|
||
if (! CPP_OPTIONS(pfile)->ignore_srcdir
|
||
&& !strcmp (argv[i] + 2, "-")) {
|
||
CPP_OPTIONS (pfile)->ignore_srcdir = 1;
|
||
/* Don't use any preceding -I directories for #include <...>. */
|
||
CPP_OPTIONS (pfile)->first_bracket_include = 0;
|
||
}
|
||
else {
|
||
dirtmp = (struct file_name_list *)
|
||
xmalloc (sizeof (struct file_name_list));
|
||
dirtmp->next = 0; /* New one goes on the end */
|
||
dirtmp->control_macro = 0;
|
||
dirtmp->c_system_include_path = 0;
|
||
if (argv[i][2] != 0)
|
||
dirtmp->fname = argv[i] + 2;
|
||
else if (i + 1 == argc)
|
||
goto missing_dirname;
|
||
else
|
||
dirtmp->fname = argv[++i];
|
||
dirtmp->got_name_map = 0;
|
||
append_include_chain (pfile, dirtmp, dirtmp);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'n':
|
||
if (!strcmp (argv[i], "-nostdinc"))
|
||
/* -nostdinc causes no default include directories.
|
||
You must specify all include-file directories with -I. */
|
||
opts->no_standard_includes = 1;
|
||
else if (!strcmp (argv[i], "-nostdinc++"))
|
||
/* -nostdinc++ causes no default C++-specific include directories. */
|
||
opts->no_standard_cplusplus_includes = 1;
|
||
#if 0
|
||
else if (!strcmp (argv[i], "-noprecomp"))
|
||
no_precomp = 1;
|
||
#endif
|
||
break;
|
||
|
||
case 'r':
|
||
if (!strcmp (argv[i], "-remap"))
|
||
opts->remap = 1;
|
||
break;
|
||
|
||
case 'u':
|
||
/* Sun compiler passes undocumented switch "-undef".
|
||
Let's assume it means to inhibit the predefined symbols. */
|
||
opts->inhibit_predefs = 1;
|
||
break;
|
||
|
||
case '\0': /* JF handle '-' as file name meaning stdin or stdout */
|
||
if (opts->in_fname == NULL) {
|
||
opts->in_fname = "";
|
||
break;
|
||
} else if (opts->out_fname == NULL) {
|
||
opts->out_fname = "";
|
||
break;
|
||
} /* else fall through into error */
|
||
|
||
default:
|
||
return i;
|
||
}
|
||
}
|
||
|
||
return i + 1;
|
||
}
|
||
|
||
/* Handle command-line options in (argc, argv).
|
||
Can be called multiple times, to handle multiple sets of options.
|
||
Returns if an unrecognized option is seen.
|
||
Returns number of strings consumed. */
|
||
|
||
int
|
||
cpp_handle_options (pfile, argc, argv)
|
||
cpp_reader *pfile;
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
int i;
|
||
int strings_processed;
|
||
for (i = 0; i < argc; i += strings_processed)
|
||
{
|
||
strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
|
||
if (strings_processed == 0)
|
||
break;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
void
|
||
cpp_finish (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
struct cpp_options *opts = CPP_OPTIONS (pfile);
|
||
|
||
if (opts->print_deps)
|
||
{
|
||
/* Stream on which to print the dependency information. */
|
||
FILE *deps_stream;
|
||
|
||
/* Don't actually write the deps file if compilation has failed. */
|
||
if (pfile->errors == 0)
|
||
{
|
||
char *deps_mode = opts->print_deps_append ? "a" : "w";
|
||
if (opts->deps_file == 0)
|
||
deps_stream = stdout;
|
||
else if ((deps_stream = fopen (opts->deps_file, deps_mode)) == 0)
|
||
cpp_pfatal_with_name (pfile, opts->deps_file);
|
||
fputs (pfile->deps_buffer, deps_stream);
|
||
putc ('\n', deps_stream);
|
||
if (opts->deps_file)
|
||
{
|
||
if (ferror (deps_stream) || fclose (deps_stream) != 0)
|
||
cpp_fatal (pfile, "I/O error on output");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Free resources used by PFILE.
|
||
This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
|
||
|
||
void
|
||
cpp_cleanup (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
int i;
|
||
while ( CPP_BUFFER (pfile) != CPP_NULL_BUFFER (pfile))
|
||
cpp_pop_buffer (pfile);
|
||
|
||
if (pfile->token_buffer)
|
||
{
|
||
free (pfile->token_buffer);
|
||
pfile->token_buffer = NULL;
|
||
}
|
||
|
||
if (pfile->deps_buffer)
|
||
{
|
||
free (pfile->deps_buffer);
|
||
pfile->deps_buffer = NULL;
|
||
pfile->deps_allocated_size = 0;
|
||
}
|
||
|
||
while (pfile->if_stack)
|
||
{
|
||
IF_STACK_FRAME *temp = pfile->if_stack;
|
||
pfile->if_stack = temp->next;
|
||
free (temp);
|
||
}
|
||
|
||
while (pfile->dont_repeat_files)
|
||
{
|
||
struct file_name_list *temp = pfile->dont_repeat_files;
|
||
pfile->dont_repeat_files = temp->next;
|
||
free (temp->fname);
|
||
free (temp);
|
||
}
|
||
|
||
while (pfile->all_include_files)
|
||
{
|
||
struct file_name_list *temp = pfile->all_include_files;
|
||
pfile->all_include_files = temp->next;
|
||
free (temp->fname);
|
||
free (temp);
|
||
}
|
||
|
||
for (i = IMPORT_HASH_SIZE; --i >= 0; )
|
||
{
|
||
register struct import_file *imp = pfile->import_hash_table[i];
|
||
while (imp)
|
||
{
|
||
struct import_file *next = imp->next;
|
||
free (imp->name);
|
||
free (imp);
|
||
imp = next;
|
||
}
|
||
pfile->import_hash_table[i] = 0;
|
||
}
|
||
|
||
for (i = ASSERTION_HASHSIZE; --i >= 0; )
|
||
{
|
||
while (pfile->assertion_hashtab[i])
|
||
delete_assertion (pfile->assertion_hashtab[i]);
|
||
}
|
||
|
||
cpp_hash_cleanup (pfile);
|
||
}
|
||
|
||
static int
|
||
do_assert (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
long symstart; /* remember where symbol name starts */
|
||
int c;
|
||
int sym_length; /* and how long it is */
|
||
struct arglist *tokens = NULL;
|
||
|
||
if (CPP_PEDANTIC (pfile) && CPP_OPTIONS (pfile)->done_initializing
|
||
&& !CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#assert'");
|
||
|
||
cpp_skip_hspace (pfile);
|
||
symstart = CPP_WRITTEN (pfile); /* remember where it starts */
|
||
parse_name (pfile, GETC());
|
||
sym_length = check_macro_name (pfile, pfile->token_buffer + symstart,
|
||
"assertion");
|
||
|
||
cpp_skip_hspace (pfile);
|
||
if (PEEKC() != '(') {
|
||
cpp_error (pfile, "missing token-sequence in `#assert'");
|
||
goto error;
|
||
}
|
||
|
||
{
|
||
int error_flag = 0;
|
||
tokens = read_token_list (pfile, &error_flag);
|
||
if (error_flag)
|
||
goto error;
|
||
if (tokens == 0) {
|
||
cpp_error (pfile, "empty token-sequence in `#assert'");
|
||
goto error;
|
||
}
|
||
cpp_skip_hspace (pfile);
|
||
c = PEEKC ();
|
||
if (c != EOF && c != '\n')
|
||
cpp_pedwarn (pfile, "junk at end of `#assert'");
|
||
skip_rest_of_line (pfile);
|
||
}
|
||
|
||
/* If this name isn't already an assertion name, make it one.
|
||
Error if it was already in use in some other way. */
|
||
|
||
{
|
||
ASSERTION_HASHNODE *hp;
|
||
U_CHAR *symname = pfile->token_buffer + symstart;
|
||
int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
|
||
struct tokenlist_list *value
|
||
= (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
|
||
|
||
hp = assertion_lookup (pfile, symname, sym_length, hashcode);
|
||
if (hp == NULL) {
|
||
if (sym_length == 7 && ! strncmp (symname, "defined", sym_length))
|
||
cpp_error (pfile, "`defined' redefined as assertion");
|
||
hp = assertion_install (pfile, symname, sym_length, hashcode);
|
||
}
|
||
|
||
/* Add the spec'd token-sequence to the list of such. */
|
||
value->tokens = tokens;
|
||
value->next = hp->value;
|
||
hp->value = value;
|
||
}
|
||
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
|
||
return 0;
|
||
error:
|
||
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
|
||
skip_rest_of_line (pfile);
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
do_unassert (pfile, keyword, buf, limit)
|
||
cpp_reader *pfile;
|
||
struct directive *keyword ATTRIBUTE_UNUSED;
|
||
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
|
||
{
|
||
long symstart; /* remember where symbol name starts */
|
||
int sym_length; /* and how long it is */
|
||
int c;
|
||
|
||
struct arglist *tokens = NULL;
|
||
int tokens_specified = 0;
|
||
|
||
if (CPP_PEDANTIC (pfile) && CPP_OPTIONS (pfile)->done_initializing
|
||
&& !CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow `#unassert'");
|
||
|
||
cpp_skip_hspace (pfile);
|
||
|
||
symstart = CPP_WRITTEN (pfile); /* remember where it starts */
|
||
parse_name (pfile, GETC());
|
||
sym_length = check_macro_name (pfile, pfile->token_buffer + symstart,
|
||
"assertion");
|
||
|
||
cpp_skip_hspace (pfile);
|
||
if (PEEKC() == '(') {
|
||
int error_flag = 0;
|
||
|
||
tokens = read_token_list (pfile, &error_flag);
|
||
if (error_flag)
|
||
goto error;
|
||
if (tokens == 0) {
|
||
cpp_error (pfile, "empty token list in `#unassert'");
|
||
goto error;
|
||
}
|
||
|
||
tokens_specified = 1;
|
||
}
|
||
|
||
cpp_skip_hspace (pfile);
|
||
c = PEEKC ();
|
||
if (c != EOF && c != '\n')
|
||
cpp_error (pfile, "junk at end of `#unassert'");
|
||
skip_rest_of_line (pfile);
|
||
|
||
{
|
||
ASSERTION_HASHNODE *hp;
|
||
U_CHAR *symname = pfile->token_buffer + symstart;
|
||
int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
|
||
struct tokenlist_list *tail, *prev;
|
||
|
||
hp = assertion_lookup (pfile, symname, sym_length, hashcode);
|
||
if (hp == NULL)
|
||
return 1;
|
||
|
||
/* If no token list was specified, then eliminate this assertion
|
||
entirely. */
|
||
if (! tokens_specified)
|
||
delete_assertion (hp);
|
||
else {
|
||
/* If a list of tokens was given, then delete any matching list. */
|
||
|
||
tail = hp->value;
|
||
prev = 0;
|
||
while (tail) {
|
||
struct tokenlist_list *next = tail->next;
|
||
if (compare_token_lists (tail->tokens, tokens)) {
|
||
if (prev)
|
||
prev->next = next;
|
||
else
|
||
hp->value = tail->next;
|
||
free_token_list (tail->tokens);
|
||
free (tail);
|
||
} else {
|
||
prev = tail;
|
||
}
|
||
tail = next;
|
||
}
|
||
}
|
||
}
|
||
|
||
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
|
||
return 0;
|
||
error:
|
||
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
|
||
skip_rest_of_line (pfile);
|
||
return 1;
|
||
}
|
||
|
||
/* Test whether there is an assertion named NAME
|
||
and optionally whether it has an asserted token list TOKENS.
|
||
NAME is not null terminated; its length is SYM_LENGTH.
|
||
If TOKENS_SPECIFIED is 0, then don't check for any token list. */
|
||
|
||
int
|
||
check_assertion (pfile, name, sym_length, tokens_specified, tokens)
|
||
cpp_reader *pfile;
|
||
U_CHAR *name;
|
||
int sym_length;
|
||
int tokens_specified;
|
||
struct arglist *tokens;
|
||
{
|
||
ASSERTION_HASHNODE *hp;
|
||
int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
|
||
|
||
if (CPP_PEDANTIC (pfile) && !CPP_BUFFER (pfile)->system_header_p)
|
||
cpp_pedwarn (pfile, "ANSI C does not allow testing assertions");
|
||
|
||
hp = assertion_lookup (pfile, name, sym_length, hashcode);
|
||
if (hp == NULL)
|
||
/* It is not an assertion; just return false. */
|
||
return 0;
|
||
|
||
/* If no token list was specified, then value is 1. */
|
||
if (! tokens_specified)
|
||
return 1;
|
||
|
||
{
|
||
struct tokenlist_list *tail;
|
||
|
||
tail = hp->value;
|
||
|
||
/* If a list of tokens was given,
|
||
then succeed if the assertion records a matching list. */
|
||
|
||
while (tail) {
|
||
if (compare_token_lists (tail->tokens, tokens))
|
||
return 1;
|
||
tail = tail->next;
|
||
}
|
||
|
||
/* Fail if the assertion has no matching list. */
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Compare two lists of tokens for equality including order of tokens. */
|
||
|
||
static int
|
||
compare_token_lists (l1, l2)
|
||
struct arglist *l1, *l2;
|
||
{
|
||
while (l1 && l2) {
|
||
if (l1->length != l2->length)
|
||
return 0;
|
||
if (strncmp (l1->name, l2->name, l1->length))
|
||
return 0;
|
||
l1 = l1->next;
|
||
l2 = l2->next;
|
||
}
|
||
|
||
/* Succeed if both lists end at the same time. */
|
||
return l1 == l2;
|
||
}
|
||
|
||
struct arglist *
|
||
reverse_token_list (tokens)
|
||
struct arglist *tokens;
|
||
{
|
||
register struct arglist *prev = 0, *this, *next;
|
||
for (this = tokens; this; this = next)
|
||
{
|
||
next = this->next;
|
||
this->next = prev;
|
||
prev = this;
|
||
}
|
||
return prev;
|
||
}
|
||
|
||
/* Read a space-separated list of tokens ending in a close parenthesis.
|
||
Return a list of strings, in the order they were written.
|
||
(In case of error, return 0 and store -1 in *ERROR_FLAG.) */
|
||
|
||
static struct arglist *
|
||
read_token_list (pfile, error_flag)
|
||
cpp_reader *pfile;
|
||
int *error_flag;
|
||
{
|
||
struct arglist *token_ptrs = 0;
|
||
int depth = 1;
|
||
int length;
|
||
|
||
*error_flag = 0;
|
||
FORWARD (1); /* Skip '(' */
|
||
|
||
/* Loop over the assertion value tokens. */
|
||
while (depth > 0)
|
||
{
|
||
struct arglist *temp;
|
||
long name_written = CPP_WRITTEN (pfile);
|
||
int c;
|
||
|
||
cpp_skip_hspace (pfile);
|
||
|
||
c = GETC ();
|
||
|
||
/* Find the end of the token. */
|
||
if (c == '(')
|
||
{
|
||
CPP_PUTC (pfile, c);
|
||
depth++;
|
||
}
|
||
else if (c == ')')
|
||
{
|
||
depth--;
|
||
if (depth == 0)
|
||
break;
|
||
CPP_PUTC (pfile, c);
|
||
}
|
||
else if (c == '"' || c == '\'')
|
||
{
|
||
FORWARD(-1);
|
||
cpp_get_token (pfile);
|
||
}
|
||
else if (c == '\n')
|
||
break;
|
||
else
|
||
{
|
||
while (c != EOF && ! is_space[c] && c != '(' && c != ')'
|
||
&& c != '"' && c != '\'')
|
||
{
|
||
CPP_PUTC (pfile, c);
|
||
c = GETC();
|
||
}
|
||
if (c != EOF) FORWARD(-1);
|
||
}
|
||
|
||
length = CPP_WRITTEN (pfile) - name_written;
|
||
temp = (struct arglist *)
|
||
xmalloc (sizeof (struct arglist) + length + 1);
|
||
temp->name = (U_CHAR *) (temp + 1);
|
||
bcopy ((char *) (pfile->token_buffer + name_written),
|
||
(char *) temp->name, length);
|
||
temp->name[length] = 0;
|
||
temp->next = token_ptrs;
|
||
token_ptrs = temp;
|
||
temp->length = length;
|
||
|
||
CPP_ADJUST_WRITTEN (pfile, -length); /* pop */
|
||
|
||
if (c == EOF || c == '\n')
|
||
{ /* FIXME */
|
||
cpp_error (pfile,
|
||
"unterminated token sequence following `#' operator");
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* We accumulated the names in reverse order.
|
||
Now reverse them to get the proper order. */
|
||
return reverse_token_list (token_ptrs);
|
||
}
|
||
|
||
static void
|
||
free_token_list (tokens)
|
||
struct arglist *tokens;
|
||
{
|
||
while (tokens) {
|
||
struct arglist *next = tokens->next;
|
||
free (tokens->name);
|
||
free (tokens);
|
||
tokens = next;
|
||
}
|
||
}
|
||
|
||
/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
|
||
retrying if necessary. If MAX_READ_LEN is defined, read at most
|
||
that bytes at a time. Return a negative value if an error occurs,
|
||
otherwise return the actual number of bytes read,
|
||
which must be LEN unless end-of-file was reached. */
|
||
|
||
static int
|
||
safe_read (desc, ptr, len)
|
||
int desc;
|
||
char *ptr;
|
||
int len;
|
||
{
|
||
int left, rcount, nchars;
|
||
|
||
left = len;
|
||
while (left > 0) {
|
||
rcount = left;
|
||
#ifdef MAX_READ_LEN
|
||
if (rcount > MAX_READ_LEN)
|
||
rcount = MAX_READ_LEN;
|
||
#endif
|
||
nchars = read (desc, ptr, rcount);
|
||
if (nchars < 0)
|
||
{
|
||
#ifdef EINTR
|
||
if (errno == EINTR)
|
||
continue;
|
||
#endif
|
||
return nchars;
|
||
}
|
||
if (nchars == 0)
|
||
break;
|
||
ptr += nchars;
|
||
left -= nchars;
|
||
}
|
||
return len - left;
|
||
}
|
||
|
||
static char *
|
||
xcalloc (number, size)
|
||
unsigned number, size;
|
||
{
|
||
register unsigned total = number * size;
|
||
register char *ptr = (char *) xmalloc (total);
|
||
bzero (ptr, total);
|
||
return ptr;
|
||
}
|
||
|
||
static char *
|
||
savestring (input)
|
||
char *input;
|
||
{
|
||
unsigned size = strlen (input);
|
||
char *output = xmalloc (size + 1);
|
||
strcpy (output, input);
|
||
return output;
|
||
}
|
||
|
||
/* Initialize PMARK to remember the current position of PFILE. */
|
||
|
||
void
|
||
parse_set_mark (pmark, pfile)
|
||
struct parse_marker *pmark;
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *pbuf = CPP_BUFFER (pfile);
|
||
pmark->next = pbuf->marks;
|
||
pbuf->marks = pmark;
|
||
pmark->buf = pbuf;
|
||
pmark->position = pbuf->cur - pbuf->buf;
|
||
}
|
||
|
||
/* Cleanup PMARK - we no longer need it. */
|
||
|
||
void
|
||
parse_clear_mark (pmark)
|
||
struct parse_marker *pmark;
|
||
{
|
||
struct parse_marker **pp = &pmark->buf->marks;
|
||
for (; ; pp = &(*pp)->next) {
|
||
if (*pp == NULL) abort ();
|
||
if (*pp == pmark) break;
|
||
}
|
||
*pp = pmark->next;
|
||
}
|
||
|
||
/* Backup the current position of PFILE to that saved in PMARK. */
|
||
|
||
void
|
||
parse_goto_mark (pmark, pfile)
|
||
struct parse_marker *pmark;
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *pbuf = CPP_BUFFER (pfile);
|
||
if (pbuf != pmark->buf)
|
||
cpp_fatal (pfile, "internal error %s", "parse_goto_mark");
|
||
pbuf->cur = pbuf->buf + pmark->position;
|
||
}
|
||
|
||
/* Reset PMARK to point to the current position of PFILE. (Same
|
||
as parse_clear_mark (PMARK), parse_set_mark (PMARK, PFILE) but faster. */
|
||
|
||
void
|
||
parse_move_mark (pmark, pfile)
|
||
struct parse_marker *pmark;
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *pbuf = CPP_BUFFER (pfile);
|
||
if (pbuf != pmark->buf)
|
||
cpp_fatal (pfile, "internal error %s", "parse_move_mark");
|
||
pmark->position = pbuf->cur - pbuf->buf;
|
||
}
|
||
|
||
int
|
||
cpp_read_check_assertion (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
int name_start = CPP_WRITTEN (pfile);
|
||
int name_length, name_written;
|
||
int result;
|
||
FORWARD (1); /* Skip '#' */
|
||
cpp_skip_hspace (pfile);
|
||
parse_name (pfile, GETC ());
|
||
name_written = CPP_WRITTEN (pfile);
|
||
name_length = name_written - name_start;
|
||
cpp_skip_hspace (pfile);
|
||
if (CPP_BUF_PEEK (CPP_BUFFER (pfile)) == '(')
|
||
{
|
||
int error_flag;
|
||
struct arglist *token_ptrs = read_token_list (pfile, &error_flag);
|
||
result = check_assertion (pfile,
|
||
pfile->token_buffer + name_start, name_length,
|
||
1, token_ptrs);
|
||
}
|
||
else
|
||
result = check_assertion (pfile,
|
||
pfile->token_buffer + name_start, name_length,
|
||
0, NULL_PTR);
|
||
CPP_ADJUST_WRITTEN (pfile, - name_length); /* pop */
|
||
return result;
|
||
}
|
||
|
||
void
|
||
cpp_print_file_and_line (pfile)
|
||
cpp_reader *pfile;
|
||
{
|
||
cpp_buffer *ip = cpp_file_buffer (pfile);
|
||
|
||
if (ip != NULL)
|
||
{
|
||
long line, col;
|
||
cpp_buf_line_and_col (ip, &line, &col);
|
||
cpp_file_line_for_message (pfile, ip->nominal_fname,
|
||
line, pfile->show_column ? col : -1);
|
||
}
|
||
}
|
||
|
||
static void
|
||
v_cpp_error (pfile, msg, ap)
|
||
cpp_reader *pfile;
|
||
const char *msg;
|
||
va_list ap;
|
||
{
|
||
cpp_print_containing_files (pfile);
|
||
cpp_print_file_and_line (pfile);
|
||
v_cpp_message (pfile, 1, msg, ap);
|
||
}
|
||
|
||
void
|
||
cpp_error VPROTO ((cpp_reader * pfile, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START(ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
v_cpp_error (pfile, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
/* Print error message but don't count it. */
|
||
|
||
static void
|
||
v_cpp_warning (pfile, msg, ap)
|
||
cpp_reader *pfile;
|
||
const char *msg;
|
||
va_list ap;
|
||
{
|
||
if (CPP_OPTIONS (pfile)->inhibit_warnings)
|
||
return;
|
||
|
||
if (CPP_OPTIONS (pfile)->warnings_are_errors)
|
||
pfile->errors++;
|
||
|
||
cpp_print_containing_files (pfile);
|
||
cpp_print_file_and_line (pfile);
|
||
v_cpp_message (pfile, 0, msg, ap);
|
||
}
|
||
|
||
void
|
||
cpp_warning VPROTO ((cpp_reader * pfile, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
v_cpp_warning (pfile, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
/* Print an error message and maybe count it. */
|
||
|
||
void
|
||
cpp_pedwarn VPROTO ((cpp_reader * pfile, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
if (CPP_OPTIONS (pfile)->pedantic_errors)
|
||
v_cpp_error (pfile, msg, ap);
|
||
else
|
||
v_cpp_warning (pfile, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
static void
|
||
v_cpp_error_with_line (pfile, line, column, msg, ap)
|
||
cpp_reader * pfile;
|
||
int line;
|
||
int column;
|
||
const char * msg;
|
||
va_list ap;
|
||
{
|
||
cpp_buffer *ip = cpp_file_buffer (pfile);
|
||
|
||
cpp_print_containing_files (pfile);
|
||
|
||
if (ip != NULL)
|
||
cpp_file_line_for_message (pfile, ip->nominal_fname, line, column);
|
||
|
||
v_cpp_message (pfile, 1, msg, ap);
|
||
}
|
||
|
||
void
|
||
cpp_error_with_line VPROTO ((cpp_reader * pfile, int line, int column, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
int line;
|
||
int column;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
line = va_arg (ap, int);
|
||
column = va_arg (ap, int);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
v_cpp_error_with_line(pfile, line, column, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
static void
|
||
v_cpp_warning_with_line (pfile, line, column, msg, ap)
|
||
cpp_reader * pfile;
|
||
int line;
|
||
int column;
|
||
const char *msg;
|
||
va_list ap;
|
||
{
|
||
cpp_buffer *ip;
|
||
|
||
if (CPP_OPTIONS (pfile)->inhibit_warnings)
|
||
return;
|
||
|
||
if (CPP_OPTIONS (pfile)->warnings_are_errors)
|
||
pfile->errors++;
|
||
|
||
cpp_print_containing_files (pfile);
|
||
|
||
ip = cpp_file_buffer (pfile);
|
||
|
||
if (ip != NULL)
|
||
cpp_file_line_for_message (pfile, ip->nominal_fname, line, column);
|
||
|
||
v_cpp_message (pfile, 0, msg, ap);
|
||
}
|
||
|
||
#if 0
|
||
static void
|
||
cpp_warning_with_line VPROTO ((cpp_reader * pfile, int line, int column, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
int line;
|
||
int column;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
line = va_arg (ap, int);
|
||
column = va_arg (ap, int);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
v_cpp_warning_with_line (pfile, line, column, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
#endif
|
||
|
||
void
|
||
cpp_pedwarn_with_line VPROTO ((cpp_reader * pfile, int line, int column, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
int line;
|
||
int column;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
line = va_arg (ap, int);
|
||
column = va_arg (ap, int);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
if (CPP_OPTIONS (pfile)->pedantic_errors)
|
||
v_cpp_error_with_line (pfile, column, line, msg, ap);
|
||
else
|
||
v_cpp_warning_with_line (pfile, line, column, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
/* Report a warning (or an error if pedantic_errors)
|
||
giving specified file name and line number, not current. */
|
||
|
||
void
|
||
cpp_pedwarn_with_file_and_line VPROTO ((cpp_reader *pfile, char *file, int line, const char *msg, ...))
|
||
{
|
||
#ifndef __STDC__
|
||
cpp_reader *pfile;
|
||
char *file;
|
||
int line;
|
||
const char *msg;
|
||
#endif
|
||
va_list ap;
|
||
|
||
VA_START (ap, msg);
|
||
|
||
#ifndef __STDC__
|
||
pfile = va_arg (ap, cpp_reader *);
|
||
file = va_arg (ap, char *);
|
||
line = va_arg (ap, int);
|
||
msg = va_arg (ap, const char *);
|
||
#endif
|
||
|
||
if (!CPP_OPTIONS (pfile)->pedantic_errors
|
||
&& CPP_OPTIONS (pfile)->inhibit_warnings)
|
||
return;
|
||
if (file != NULL)
|
||
cpp_file_line_for_message (pfile, file, line, -1);
|
||
v_cpp_message (pfile, CPP_OPTIONS (pfile)->pedantic_errors, msg, ap);
|
||
va_end(ap);
|
||
}
|
||
|
||
/* my_strerror - return the descriptive text associated with an
|
||
`errno' code. */
|
||
|
||
static char *
|
||
my_strerror (errnum)
|
||
int errnum;
|
||
{
|
||
char *result;
|
||
|
||
#ifndef VMS
|
||
#ifndef HAVE_STRERROR
|
||
result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
|
||
#else
|
||
result = strerror (errnum);
|
||
#endif
|
||
#else /* VMS */
|
||
/* VAXCRTL's strerror() takes an optional second argument, which only
|
||
matters when the first argument is EVMSERR. However, it's simplest
|
||
just to pass it unconditionally. `vaxc$errno' is declared in
|
||
<errno.h>, and maintained by the library in parallel with `errno'.
|
||
We assume that caller's `errnum' either matches the last setting of
|
||
`errno' by the library or else does not have the value `EVMSERR'. */
|
||
|
||
result = strerror (errnum, vaxc$errno);
|
||
#endif
|
||
|
||
if (!result)
|
||
result = "undocumented I/O error";
|
||
|
||
return result;
|
||
}
|
||
|
||
/* Error including a message from `errno'. */
|
||
|
||
void
|
||
cpp_error_from_errno (pfile, name)
|
||
cpp_reader *pfile;
|
||
const char *name;
|
||
{
|
||
cpp_message_from_errno (pfile, 1, name);
|
||
}
|
||
|
||
void
|
||
cpp_message_from_errno (pfile, is_error, name)
|
||
cpp_reader *pfile;
|
||
int is_error;
|
||
const char *name;
|
||
{
|
||
int e = errno;
|
||
cpp_buffer *ip = cpp_file_buffer (pfile);
|
||
|
||
cpp_print_containing_files (pfile);
|
||
|
||
if (ip != NULL)
|
||
cpp_file_line_for_message (pfile, ip->nominal_fname, ip->lineno, -1);
|
||
|
||
cpp_message (pfile, is_error, "%s: %s", name, my_strerror (e));
|
||
}
|
||
|
||
void
|
||
cpp_perror_with_name (pfile, name)
|
||
cpp_reader *pfile;
|
||
const char *name;
|
||
{
|
||
cpp_message (pfile, 1, "%s: %s: %s", progname, name, my_strerror (errno));
|
||
}
|
||
|
||
/* TODO:
|
||
* No pre-compiled header file support.
|
||
*
|
||
* Possibly different enum token codes for each C/C++ token.
|
||
*
|
||
* Should clean up remaining directives to that do_XXX functions
|
||
* only take two arguments and all have command_reads_line.
|
||
*
|
||
* Find and cleanup remaining uses of static variables,
|
||
*
|
||
* Support for trigraphs.
|
||
*
|
||
* Support -dM flag (dump_all_macros).
|
||
*
|
||
* Support for_lint flag.
|
||
*/
|