/* CPP Library.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
#include "system.h"
#include "cpplib.h"
#include "cpphash.h"
-#include "prefix.h"
-#include "intl.h"
-#include "version.h"
#include "mkdeps.h"
-#include "cppdefault.h"
-
-/* Windows does not natively support inodes, and neither does MSDOS.
- Cygwin's emulation can generate non-unique inodes, so don't use it.
- VMS has non-numeric inodes. */
-#ifdef VMS
-# define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A)))
-# define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC))
-#else
-# if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
-# define INO_T_EQ(A, B) 0
-# else
-# define INO_T_EQ(A, B) ((A) == (B))
-# endif
-# define INO_T_COPY(DEST, SRC) (DEST) = (SRC)
-#endif
-
-/* Internal structures and prototypes. */
-
-/* A `struct pending_option' remembers one -D, -A, -U, -include, or
- -imacros switch. */
-typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
-struct pending_option
-{
- struct pending_option *next;
- const char *arg;
- cl_directive_handler handler;
-};
-
-/* The `pending' structure accumulates all the options that are not
- actually processed until we hit cpp_read_main_file. It consists of
- several lists, one for each type of option. We keep both head and
- tail pointers for quick insertion. */
-struct cpp_pending
-{
- struct pending_option *directive_head, *directive_tail;
-
- struct search_path *quote_head, *quote_tail;
- struct search_path *brack_head, *brack_tail;
- struct search_path *systm_head, *systm_tail;
- struct search_path *after_head, *after_tail;
-
- struct pending_option *imacros_head, *imacros_tail;
- struct pending_option *include_head, *include_tail;
-};
-
-#ifdef __STDC__
-#define APPEND(pend, list, elt) \
- do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
- else (pend)->list##_tail->next = (elt); \
- (pend)->list##_tail = (elt); \
- } while (0)
-#else
-#define APPEND(pend, list, elt) \
- do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
- else (pend)->list/**/_tail->next = (elt); \
- (pend)->list/**/_tail = (elt); \
- } while (0)
-#endif
-static void path_include PARAMS ((cpp_reader *,
- char *, int));
-static void init_library PARAMS ((void));
-static void init_builtins PARAMS ((cpp_reader *));
-static void mark_named_operators PARAMS ((cpp_reader *));
-static void append_include_chain PARAMS ((cpp_reader *,
- char *, int, int));
-static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
- struct search_path *));
-static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
- struct search_path *));
-static void merge_include_chains PARAMS ((cpp_reader *));
-static bool push_include PARAMS ((cpp_reader *,
- struct pending_option *));
-static void free_chain PARAMS ((struct pending_option *));
-static void init_standard_includes PARAMS ((cpp_reader *));
-static void read_original_filename PARAMS ((cpp_reader *));
-static void new_pending_directive PARAMS ((struct cpp_pending *,
- const char *,
- cl_directive_handler));
-static int parse_option PARAMS ((const char *));
-
-/* Fourth argument to append_include_chain: chain to use.
- Note it's never asked to append to the quote chain. */
-enum { BRACKET = 0, SYSTEM, AFTER };
+static void init_library (void);
+static void mark_named_operators (cpp_reader *);
+static void read_original_filename (cpp_reader *);
+static void post_options (cpp_reader *);
/* If we have designated initializers (GCC >2.7) these tables can be
initialized, constant data. Otherwise, they have to be filled in at
#else
#define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
- static void init_trigraph_map PARAMS ((void)) { \
+ static void init_trigraph_map (void) { \
unsigned char *x = _cpp_trigraph_map;
#define END }
#undef END
#undef TRIGRAPH_MAP
-/* 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, list, path)
- cpp_reader *pfile;
- char *list;
- int path;
-{
- char *p, *q, *name;
-
- p = list;
-
- do
- {
- /* Find the end of this name. */
- q = p;
- while (*q != 0 && *q != PATH_SEPARATOR) q++;
- if (q == p)
- {
- /* 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);
- memcpy (name, p, q - p);
- name[q - p] = 0;
- }
-
- append_include_chain (pfile, name, path, 0);
-
- /* Advance past this name. */
- if (*q == 0)
- break;
- p = q + 1;
- }
- while (1);
-}
-
-/* Append DIR to include path PATH. DIR must be allocated on the
- heap; this routine takes responsibility for freeing it. CXX_AWARE
- is non-zero if the header contains extern "C" guards for C++,
- otherwise it is zero. */
-static void
-append_include_chain (pfile, dir, path, cxx_aware)
- cpp_reader *pfile;
- char *dir;
- int path;
- int cxx_aware;
-{
- struct cpp_pending *pend = CPP_OPTION (pfile, pending);
- struct search_path *new;
- struct stat st;
- unsigned int len;
-
- if (*dir == '\0')
- {
- free (dir);
- dir = xstrdup (".");
- }
- _cpp_simplify_pathname (dir);
-
- if (stat (dir, &st))
- {
- /* Dirs that don't exist are silently ignored. */
- if (errno != ENOENT)
- cpp_errno (pfile, DL_ERROR, dir);
- else if (CPP_OPTION (pfile, verbose))
- fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
- free (dir);
- return;
- }
-
- if (!S_ISDIR (st.st_mode))
- {
- cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir);
- free (dir);
- return;
- }
-
- len = strlen (dir);
- if (len > pfile->max_include_len)
- pfile->max_include_len = len;
-
- new = (struct search_path *) xmalloc (sizeof (struct search_path));
- new->name = dir;
- new->len = len;
- INO_T_COPY (new->ino, st.st_ino);
- new->dev = st.st_dev;
- /* Both systm and after include file lists should be treated as system
- include files since these two lists are really just a concatenation
- of one "system" list. */
- if (path == SYSTEM || path == AFTER)
- new->sysp = cxx_aware ? 1 : 2;
- else
- new->sysp = 0;
- new->name_map = NULL;
- new->next = NULL;
-
- switch (path)
- {
- case BRACKET: APPEND (pend, brack, new); break;
- case SYSTEM: APPEND (pend, systm, new); break;
- case AFTER: APPEND (pend, after, new); break;
- }
-}
-
-/* Handle a duplicated include path. PREV is the link in the chain
- before the duplicate. The duplicate is removed from the chain and
- freed. Returns PREV. */
-static struct search_path *
-remove_dup_dir (pfile, prev)
- cpp_reader *pfile;
- struct search_path *prev;
-{
- struct search_path *cur = prev->next;
-
- if (CPP_OPTION (pfile, verbose))
- fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
-
- prev->next = cur->next;
- free ((PTR) cur->name);
- free (cur);
-
- return prev;
-}
-
-/* Remove duplicate directories from a chain. Returns the tail of the
- chain, or NULL if the chain is empty. This algorithm is quadratic
- in the number of -I switches, which is acceptable since there
- aren't usually that many of them. */
-static struct search_path *
-remove_dup_dirs (pfile, head)
- cpp_reader *pfile;
- struct search_path *head;
-{
- struct search_path *prev = NULL, *cur, *other;
-
- for (cur = head; cur; cur = cur->next)
- {
- for (other = head; other != cur; other = other->next)
- if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
- {
- if (cur->sysp && !other->sysp)
- {
- cpp_error (pfile, DL_WARNING,
- "changing search order for system directory \"%s\"",
- cur->name);
- if (strcmp (cur->name, other->name))
- cpp_error (pfile, DL_WARNING,
- " as it is the same as non-system directory \"%s\"",
- other->name);
- else
- cpp_error (pfile, DL_WARNING,
- " as it has already been specified as a non-system directory");
- }
- cur = remove_dup_dir (pfile, prev);
- break;
- }
- prev = cur;
- }
-
- return prev;
-}
-
-/* Merge the four include chains together in the order quote, bracket,
- system, after. Remove duplicate dirs (as determined by
- INO_T_EQ()). The system_include and after_include chains are never
- referred to again after this function; all access is through the
- bracket_include path. */
-static void
-merge_include_chains (pfile)
- cpp_reader *pfile;
-{
- struct search_path *quote, *brack, *systm, *qtail;
-
- struct cpp_pending *pend = CPP_OPTION (pfile, pending);
-
- quote = pend->quote_head;
- brack = pend->brack_head;
- systm = pend->systm_head;
- qtail = pend->quote_tail;
-
- /* Paste together bracket, system, and after include chains. */
- if (systm)
- pend->systm_tail->next = pend->after_head;
- else
- systm = pend->after_head;
-
- if (brack)
- pend->brack_tail->next = systm;
- else
- brack = systm;
-
- /* This is a bit tricky. First we drop dupes from the quote-include
- list. Then we drop dupes from the bracket-include list.
- Finally, if qtail and brack are the same directory, we cut out
- brack and move brack up to point to qtail.
-
- We can't just merge the lists and then uniquify them because
- then we may lose directories from the <> search path that should
- be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
- safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
- -Ibar -I- -Ifoo -Iquux. */
-
- remove_dup_dirs (pfile, brack);
- qtail = remove_dup_dirs (pfile, quote);
-
- if (quote)
- {
- qtail->next = brack;
-
- /* If brack == qtail, remove brack as it's simpler. */
- if (brack && INO_T_EQ (qtail->ino, brack->ino)
- && qtail->dev == brack->dev)
- brack = remove_dup_dir (pfile, qtail);
- }
- else
- quote = brack;
-
- CPP_OPTION (pfile, quote_include) = quote;
- CPP_OPTION (pfile, bracket_include) = brack;
-}
-
/* A set of booleans indicating what CPP features each source language
requires. */
struct lang_flags
char cplusplus;
char extended_numbers;
char std;
- char dollars_in_ident;
char cplusplus_comments;
char digraphs;
};
-/* ??? Enable $ in identifiers in assembly? */
static const struct lang_flags lang_defaults[] =
-{ /* c99 c++ xnum std dollar c++comm digr */
- /* GNUC89 */ { 0, 0, 1, 0, 1, 1, 1 },
- /* GNUC99 */ { 1, 0, 1, 0, 1, 1, 1 },
- /* STDC89 */ { 0, 0, 0, 1, 0, 0, 0 },
- /* STDC94 */ { 0, 0, 0, 1, 0, 0, 1 },
- /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1 },
- /* GNUCXX */ { 0, 1, 1, 0, 1, 1, 1 },
- /* CXX98 */ { 0, 1, 1, 1, 0, 1, 1 },
- /* ASM */ { 0, 0, 1, 0, 0, 1, 0 }
+{ /* c99 c++ xnum std // digr */
+ /* GNUC89 */ { 0, 0, 1, 0, 1, 1 },
+ /* GNUC99 */ { 1, 0, 1, 0, 1, 1 },
+ /* STDC89 */ { 0, 0, 0, 1, 0, 0 },
+ /* STDC94 */ { 0, 0, 0, 1, 0, 1 },
+ /* STDC99 */ { 1, 0, 1, 1, 1, 1 },
+ /* GNUCXX */ { 0, 1, 1, 0, 1, 1 },
+ /* CXX98 */ { 0, 1, 1, 1, 1, 1 },
+ /* ASM */ { 0, 0, 1, 0, 1, 0 }
};
/* Sets internal flags correctly for a given language. */
void
-cpp_set_lang (pfile, lang)
- cpp_reader *pfile;
- enum c_lang lang;
+cpp_set_lang (cpp_reader *pfile, enum c_lang lang)
{
const struct lang_flags *l = &lang_defaults[(int) lang];
CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
CPP_OPTION (pfile, std) = l->std;
CPP_OPTION (pfile, trigraphs) = l->std;
- CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
CPP_OPTION (pfile, digraphs) = l->digraphs;
}
-#ifdef HOST_EBCDIC
-static int opt_comp PARAMS ((const void *, const void *));
-
-/* Run-time sorting of options array. */
-static int
-opt_comp (p1, p2)
- const void *p1, *p2;
-{
- return strcmp (((struct cl_option *) p1)->opt_text,
- ((struct cl_option *) p2)->opt_text);
-}
-#endif
-
-/* init initializes library global state. It might not need to
- do anything depending on the platform and compiler. */
+/* Initialize library global state. */
static void
-init_library ()
+init_library (void)
{
static int initialized = 0;
{
initialized = 1;
-#ifdef HOST_EBCDIC
- /* For non-ASCII hosts, the cl_options array needs to be sorted at
- runtime. */
- qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
-#endif
-
/* Set up the trigraph map. This doesn't need to do anything if
we were compiled with a compiler that supports C99 designated
initializers. */
/* Initialize a cpp_reader structure. */
cpp_reader *
-cpp_create_reader (lang)
- enum c_lang lang;
+cpp_create_reader (enum c_lang lang, hash_table *table)
{
cpp_reader *pfile;
- /* Initialise this instance of the library if it hasn't been already. */
+ /* Initialize this instance of the library if it hasn't been already. */
init_library ();
- pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
+ pfile = xcalloc (1, sizeof (cpp_reader));
cpp_set_lang (pfile, lang);
CPP_OPTION (pfile, warn_import) = 1;
CPP_OPTION (pfile, show_column) = 1;
CPP_OPTION (pfile, tabstop) = 8;
CPP_OPTION (pfile, operator_names) = 1;
+ CPP_OPTION (pfile, warn_trigraphs) = 2;
CPP_OPTION (pfile, warn_endif_labels) = 1;
-
- CPP_OPTION (pfile, pending) =
- (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
+ CPP_OPTION (pfile, warn_deprecated) = 1;
+ CPP_OPTION (pfile, warn_long_long) = !CPP_OPTION (pfile, c99);
+ CPP_OPTION (pfile, dollars_in_ident) = 1;
+ CPP_OPTION (pfile, warn_dollars) = 1;
/* Default CPP arithmetic to something sensible for the host for the
benefit of dumb users like fix-header. */
CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int);
CPP_OPTION (pfile, unsigned_char) = 0;
CPP_OPTION (pfile, unsigned_wchar) = 1;
+ CPP_OPTION (pfile, bytes_big_endian) = 1; /* does not matter */
- /* It's simplest to just create this struct whether or not it will
- be needed. */
- pfile->deps = deps_init ();
+ /* Default to no charset conversion. */
+ CPP_OPTION (pfile, narrow_charset) = 0;
+ CPP_OPTION (pfile, wide_charset) = 0;
- /* Initialise the line map. Start at logical line 1, so we can use
+ /* Initialize the line map. Start at logical line 1, so we can use
a line number of zero for special states. */
- init_line_maps (&pfile->line_maps);
- pfile->line = 1;
+ linemap_init (&pfile->line_maps);
/* Initialize lexer state. */
pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
pfile->cur_run = &pfile->base_run;
pfile->cur_token = pfile->base_run.base;
- /* Initialise the base context. */
+ /* Initialize the base context. */
pfile->context = &pfile->base_context;
pfile->base_context.macro = 0;
pfile->base_context.prev = pfile->base_context.next = 0;
/* The expression parser stack. */
_cpp_expand_op_stack (pfile);
- /* Initialise the buffer obstack. */
- gcc_obstack_init (&pfile->buffer_ob);
+ /* Initialize the buffer obstack. */
+ _obstack_begin (&pfile->buffer_ob, 0, 0,
+ (void *(*) (long)) xmalloc,
+ (void (*) (void *)) free);
_cpp_init_includes (pfile);
+ _cpp_init_hashtable (pfile, table);
+
return pfile;
}
/* Free resources used by PFILE. Accessing PFILE after this function
- returns leads to undefined behaviour. Returns the error count. */
+ returns leads to undefined behavior. Returns the error count. */
void
-cpp_destroy (pfile)
- cpp_reader *pfile;
+cpp_destroy (cpp_reader *pfile)
{
- struct search_path *dir, *dirn;
cpp_context *context, *contextn;
tokenrun *run, *runn;
- free_chain (CPP_OPTION (pfile, pending)->include_head);
- free (CPP_OPTION (pfile, pending));
free (pfile->op_stack);
while (CPP_BUFFER (pfile) != NULL)
if (pfile->macro_buffer)
{
- free ((PTR) pfile->macro_buffer);
+ free (pfile->macro_buffer);
pfile->macro_buffer = NULL;
pfile->macro_buffer_len = 0;
}
- deps_free (pfile->deps);
+ if (pfile->deps)
+ deps_free (pfile->deps);
obstack_free (&pfile->buffer_ob, 0);
_cpp_destroy_hashtable (pfile);
_cpp_cleanup_includes (pfile);
+ _cpp_destroy_iconv (pfile);
_cpp_free_buff (pfile->a_buff);
_cpp_free_buff (pfile->u_buff);
free (run);
}
- for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
- {
- dirn = dir->next;
- free ((PTR) dir->name);
- free (dir);
- }
-
for (context = pfile->base_context.next; context; context = contextn)
{
contextn = context->next;
free (context);
}
- free_line_maps (&pfile->line_maps);
+ linemap_free (&pfile->line_maps);
free (pfile);
}
/* Mark the C++ named operators in the hash table. */
static void
-mark_named_operators (pfile)
- cpp_reader *pfile;
+mark_named_operators (cpp_reader *pfile)
{
const struct builtin *b;
{
cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
hp->flags |= NODE_OPERATOR;
- hp->value.operator = b->value;
+ hp->is_directive = 0;
+ hp->directive_index = b->value;
}
}
-/* Subroutine of cpp_read_main_file; reads the builtins table above and
- enters them, and language-specific macros, into the hash table. */
-static void
-init_builtins (pfile)
- cpp_reader *pfile;
+/* Read the builtins table above and enter them, and language-specific
+ macros, into the hash table. HOSTED is true if this is a hosted
+ environment. */
+void
+cpp_init_builtins (cpp_reader *pfile, int hosted)
{
const struct builtin *b;
size_t n = ARRAY_SIZE (builtin_array);
else if (CPP_OPTION (pfile, c99))
_cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
+ if (hosted)
+ _cpp_define_builtin (pfile, "__STDC_HOSTED__ 1");
+ else
+ _cpp_define_builtin (pfile, "__STDC_HOSTED__ 0");
+
if (CPP_OPTION (pfile, objc))
_cpp_define_builtin (pfile, "__OBJC__ 1");
-
- if (pfile->cb.register_builtins)
- (*pfile->cb.register_builtins) (pfile);
-}
-
-/* And another subroutine. This one sets up the standard include path. */
-static void
-init_standard_includes (pfile)
- cpp_reader *pfile;
-{
- char *path;
- const struct default_include *p;
- const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
-
- /* Several environment variables may add to the include search path.
- CPATH specifies an additional list of directories to be searched
- as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
- etc. specify an additional list of directories to be searched as
- if specified with -isystem, for the language indicated. */
-
- GET_ENVIRONMENT (path, "CPATH");
- if (path != 0 && *path != 0)
- path_include (pfile, path, BRACKET);
-
- switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
- {
- case 0:
- GET_ENVIRONMENT (path, "C_INCLUDE_PATH");
- break;
- case 1:
- GET_ENVIRONMENT (path, "CPLUS_INCLUDE_PATH");
- break;
- case 2:
- GET_ENVIRONMENT (path, "OBJC_INCLUDE_PATH");
- break;
- case 3:
- GET_ENVIRONMENT (path, "OBJCPLUS_INCLUDE_PATH");
- break;
- }
- if (path != 0 && *path != 0)
- path_include (pfile, path, SYSTEM);
-
- /* Search "translated" versions of GNU directories.
- These have /usr/local/lib/gcc... replaced by specd_prefix. */
- if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
- {
- /* Remove the `include' from /usr/local/lib/gcc.../include.
- GCC_INCLUDE_DIR will always end in /include. */
- int default_len = cpp_GCC_INCLUDE_DIR_len;
- char *default_prefix = (char *) alloca (default_len + 1);
- int specd_len = strlen (specd_prefix);
-
- memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
- default_prefix[default_len] = '\0';
-
- for (p = cpp_include_defaults; p->fname; p++)
- {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus
- || (CPP_OPTION (pfile, cplusplus)
- && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
- {
- /* Does this dir start with the prefix? */
- if (!memcmp (p->fname, default_prefix, default_len))
- {
- /* Yes; change prefix and add to search list. */
- int flen = strlen (p->fname);
- int this_len = specd_len + flen - default_len;
- char *str = (char *) xmalloc (this_len + 1);
- memcpy (str, specd_prefix, specd_len);
- memcpy (str + specd_len,
- p->fname + default_len,
- flen - default_len + 1);
-
- append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
- }
- }
- }
- }
-
- /* Search ordinary names for GNU include directories. */
- for (p = cpp_include_defaults; p->fname; p++)
- {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus
- || (CPP_OPTION (pfile, cplusplus)
- && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
- {
- char *str = update_path (p->fname, p->component);
- append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
- }
- }
-}
-
-/* Pushes a command line -imacro and -include file indicated by P onto
- the buffer stack. Returns non-zero if successful. */
-static bool
-push_include (pfile, p)
- cpp_reader *pfile;
- struct pending_option *p;
-{
- cpp_token header;
-
- /* Later: maybe update this to use the #include "" search path
- if cpp_read_file fails. */
- header.type = CPP_STRING;
- header.val.str.text = (const unsigned char *) p->arg;
- header.val.str.len = strlen (p->arg);
- /* Make the command line directive take up a line. */
- pfile->line++;
-
- return _cpp_execute_include (pfile, &header, IT_CMDLINE);
-}
-
-/* Frees a pending_option chain. */
-static void
-free_chain (head)
- struct pending_option *head;
-{
- struct pending_option *next;
-
- while (head)
- {
- next = head->next;
- free (head);
- head = next;
- }
}
/* Sanity-checks are dependent on command-line options, so it is
called as a subroutine of cpp_read_main_file (). */
#if ENABLE_CHECKING
-static void sanity_checks PARAMS ((cpp_reader *));
-static void sanity_checks (pfile)
- cpp_reader *pfile;
+static void sanity_checks (cpp_reader *);
+static void sanity_checks (cpp_reader *pfile)
{
cppchar_t test = 0;
size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part);
if (CPP_OPTION (pfile, precision) > max_precision)
cpp_error (pfile, DL_ICE,
- "preprocessor arithmetic has maximum precision of %lu bits; target requires %lu bits",
+ "preprocessor arithmetic has maximum precision of %lu bits;"
+ " target requires %lu bits",
(unsigned long) max_precision,
(unsigned long) CPP_OPTION (pfile, precision));
if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T)
cpp_error (pfile, DL_ICE,
- "CPP on this host cannot handle wide character constants over %lu bits, but the target requires %lu bits",
+ "CPP on this host cannot handle wide character constants over"
+ " %lu bits, but the target requires %lu bits",
(unsigned long) BITS_PER_CPPCHAR_T,
(unsigned long) CPP_OPTION (pfile, wchar_precision));
}
cpp_read_main_file(). If no targets have been added before
cpp_read_main_file(), then the default target is used. */
void
-cpp_add_dependency_target (pfile, target, quote)
- cpp_reader *pfile;
- const char *target;
- int quote;
+cpp_add_dependency_target (cpp_reader *pfile, const char *target, int quote)
{
if (!pfile->deps)
pfile->deps = deps_init ();
deps_add_target (pfile->deps, target, quote);
}
+/* This sets up for processing input from the file FNAME.
+ It returns false on error. */
+bool
+cpp_read_next_file (cpp_reader *pfile, const char *fname)
+{
+ /* Open the main input file. */
+ return _cpp_read_file (pfile, fname);
+}
+
/* This is called after options have been parsed, and partially
processed. Setup for processing input from the file named FNAME,
or stdin if it is the empty string. Return the original filename
on success (e.g. foo.i->foo.c), or NULL on failure. */
const char *
-cpp_read_main_file (pfile, fname, table)
- cpp_reader *pfile;
- const char *fname;
- hash_table *table;
+cpp_read_main_file (cpp_reader *pfile, const char *fname)
{
sanity_checks (pfile);
- /* The front ends don't set up the hash table until they have
- finished processing the command line options, so initializing the
- hashtable is deferred until now. */
- _cpp_init_hashtable (pfile, table);
-
- /* Set up the include search path now. */
- if (! CPP_OPTION (pfile, no_standard_includes))
- init_standard_includes (pfile);
+ post_options (pfile);
- merge_include_chains (pfile);
+ /* Mark named operators before handling command line macros. */
+ if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names))
+ mark_named_operators (pfile);
- /* With -v, print the list of dirs to search. */
- if (CPP_OPTION (pfile, verbose))
+ if (CPP_OPTION (pfile, deps.style) != DEPS_NONE)
{
- struct search_path *l;
- fprintf (stderr, _("#include \"...\" search starts here:\n"));
- for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
- {
- if (l == CPP_OPTION (pfile, bracket_include))
- fprintf (stderr, _("#include <...> search starts here:\n"));
- fprintf (stderr, " %s\n", l->name);
- }
- fprintf (stderr, _("End of search list.\n"));
- }
+ if (!pfile->deps)
+ pfile->deps = deps_init ();
- if (CPP_OPTION (pfile, print_deps))
- /* Set the default target (if there is none already). */
- deps_add_default_target (pfile->deps, fname);
+ /* Set the default target (if there is none already). */
+ deps_add_default_target (pfile->deps, fname);
+ }
- /* Open the main input file. */
- if (!_cpp_read_file (pfile, fname))
+ pfile->line = 1;
+ if (!cpp_read_next_file (pfile, fname))
return NULL;
- /* Set this after cpp_post_options so the client can change the
- option if it wishes, and after stacking the main file so we don't
- trace the main file. */
+ /* Set this here so the client can change the option if it wishes,
+ and after stacking the main file so we don't trace the main
+ file. */
pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
/* For foo.i, read the original filename foo.c now, for the benefit
generate file_change callbacks, which the front ends must handle
appropriately given their state of initialization. */
static void
-read_original_filename (pfile)
- cpp_reader *pfile;
+read_original_filename (cpp_reader *pfile)
{
const cpp_token *token, *token1;
_cpp_backup_tokens (pfile, 1);
}
-/* Handle pending command line options: -D, -U, -A, -imacros and
- -include. This should be called after debugging has been properly
- set up in the front ends. */
-void
-cpp_finish_options (pfile)
- cpp_reader *pfile;
-{
- /* Mark named operators before handling command line macros. */
- if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names))
- mark_named_operators (pfile);
-
- /* Install builtins and process command line macros etc. in the order
- they appeared, but only if not already preprocessed. */
- if (! CPP_OPTION (pfile, preprocessed))
- {
- struct pending_option *p;
-
- _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0);
- init_builtins (pfile);
- _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0);
- for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next)
- (*p->handler) (pfile, p->arg);
-
- /* Scan -imacros files after -D, -U, but before -include.
- pfile->next_include_file is NULL, so _cpp_pop_buffer does not
- push -include files. */
- for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next)
- if (push_include (pfile, p))
- cpp_scan_nooutput (pfile);
-
- pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head;
- _cpp_maybe_push_include_file (pfile);
- }
-
- pfile->first_unused_line = pfile->line;
-
- free_chain (CPP_OPTION (pfile, pending)->imacros_head);
- free_chain (CPP_OPTION (pfile, pending)->directive_head);
-}
-
-/* Push the next buffer on the stack given by -include, if any. */
-void
-_cpp_maybe_push_include_file (pfile)
- cpp_reader *pfile;
-{
- if (pfile->next_include_file)
- {
- struct pending_option *head = *pfile->next_include_file;
-
- while (head && !push_include (pfile, head))
- head = head->next;
-
- if (head)
- pfile->next_include_file = &head->next;
- else
- {
- /* All done; restore the line map from <command line>. */
- _cpp_do_file_change (pfile, LC_RENAME,
- pfile->line_maps.maps[0].to_file, 1, 0);
- /* Don't come back here again. */
- pfile->next_include_file = NULL;
- }
- }
-}
-
/* This is called at the end of preprocessing. It pops the last
buffer and writes dependency output, and returns the number of
errors.
Maybe it should also reset state, such that you could call
cpp_start_read with a new filename to restart processing. */
int
-cpp_finish (pfile, deps_stream)
- cpp_reader *pfile;
- FILE *deps_stream;
+cpp_finish (cpp_reader *pfile, FILE *deps_stream)
{
/* Warn about unused macros before popping the final buffer. */
if (CPP_OPTION (pfile, warn_unused_macros))
_cpp_pop_buffer (pfile);
/* Don't write the deps file if there are errors. */
- if (deps_stream && CPP_OPTION (pfile, print_deps) && !pfile->errors)
+ if (CPP_OPTION (pfile, deps.style) != DEPS_NONE
+ && deps_stream && pfile->errors == 0)
{
deps_write (pfile->deps, deps_stream, 72);
- if (CPP_OPTION (pfile, deps_phony_targets))
+ if (CPP_OPTION (pfile, deps.phony_targets))
deps_phony_targets (pfile->deps, deps_stream);
}
return pfile->errors;
}
-/* Add a directive to be handled later in the initialization phase. */
static void
-new_pending_directive (pend, text, handler)
- struct cpp_pending *pend;
- const char *text;
- cl_directive_handler handler;
-{
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
-
- o->arg = text;
- o->next = NULL;
- o->handler = handler;
- APPEND (pend, directive, o);
-}
-
-/* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
- I.e. a const string initializer with parens around it. That is
- what N_("string") resolves to, so we make no_* be macros instead. */
-#define no_ass N_("assertion missing after %s")
-#define no_dir N_("directory name missing after %s")
-#define no_fil N_("file name missing after %s")
-#define no_mac N_("macro name missing after %s")
-#define no_pth N_("path name missing after %s")
-#define no_tgt N_("target missing after %s")
-
-/* This is the list of all command line options, with the leading
- "-" removed. It must be sorted in ASCII collating order. */
-#define COMMAND_LINE_OPTIONS \
- DEF_OPT("A", no_ass, OPT_A) \
- DEF_OPT("D", no_mac, OPT_D) \
- DEF_OPT("I", no_dir, OPT_I) \
- DEF_OPT("M", 0, OPT_M) \
- DEF_OPT("MD", no_fil, OPT_MD) \
- DEF_OPT("MF", no_fil, OPT_MF) \
- DEF_OPT("MG", 0, OPT_MG) \
- DEF_OPT("MM", 0, OPT_MM) \
- DEF_OPT("MMD", no_fil, OPT_MMD) \
- DEF_OPT("MP", 0, OPT_MP) \
- DEF_OPT("MQ", no_tgt, OPT_MQ) \
- DEF_OPT("MT", no_tgt, OPT_MT) \
- DEF_OPT("U", no_mac, OPT_U) \
- DEF_OPT("idirafter", no_dir, OPT_idirafter) \
- DEF_OPT("imacros", no_fil, OPT_imacros) \
- DEF_OPT("include", no_fil, OPT_include) \
- DEF_OPT("iprefix", no_pth, OPT_iprefix) \
- DEF_OPT("isystem", no_dir, OPT_isystem) \
- DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
- DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore)
-
-#define DEF_OPT(text, msg, code) code,
-enum opt_code
-{
- COMMAND_LINE_OPTIONS
- N_OPTS
-};
-#undef DEF_OPT
-
-struct cl_option
-{
- const char *opt_text;
- const char *msg;
- size_t opt_len;
- enum opt_code opt_code;
-};
-
-#define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
-#ifdef HOST_EBCDIC
-static struct cl_option cl_options[] =
-#else
-static const struct cl_option cl_options[] =
-#endif
-{
- COMMAND_LINE_OPTIONS
-};
-#undef DEF_OPT
-#undef COMMAND_LINE_OPTIONS
-
-/* Perform a binary search to find which, if any, option the given
- command-line matches. Returns its index in the option array,
- negative on failure. Complications arise since some options can be
- suffixed with an argument, and multiple complete matches can occur,
- e.g. -pedantic and -pedantic-errors. */
-static int
-parse_option (input)
- const char *input;
-{
- unsigned int md, mn, mx;
- size_t opt_len;
- int comp;
-
- mn = 0;
- mx = N_OPTS;
-
- while (mx > mn)
- {
- md = (mn + mx) / 2;
-
- opt_len = cl_options[md].opt_len;
- comp = memcmp (input, cl_options[md].opt_text, opt_len);
-
- if (comp > 0)
- mn = md + 1;
- else if (comp < 0)
- mx = md;
- else
- {
- if (input[opt_len] == '\0')
- return md;
- /* We were passed more text. If the option takes an argument,
- we may match a later option or we may have been passed the
- argument. The longest possible option match succeeds.
- If the option takes no arguments we have not matched and
- continue the search (e.g. input="stdc++" match was "stdc"). */
- mn = md + 1;
- if (cl_options[md].msg)
- {
- /* Scan forwards. If we get an exact match, return it.
- Otherwise, return the longest option-accepting match.
- This loops no more than twice with current options. */
- mx = md;
- for (; mn < (unsigned int) N_OPTS; mn++)
- {
- opt_len = cl_options[mn].opt_len;
- if (memcmp (input, cl_options[mn].opt_text, opt_len))
- break;
- if (input[opt_len] == '\0')
- return mn;
- if (cl_options[mn].msg)
- mx = mn;
- }
- return mx;
- }
- }
- }
-
- return -1;
-}
-
-/* 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;
+post_options (cpp_reader *pfile)
{
- int i = 0;
- struct cpp_pending *pend = CPP_OPTION (pfile, pending);
-
- {
- enum opt_code opt_code;
- int opt_index;
- const char *arg = 0;
-
- /* Skip over '-'. */
- opt_index = parse_option (&argv[i][1]);
- if (opt_index < 0)
- return i;
-
- opt_code = cl_options[opt_index].opt_code;
- if (cl_options[opt_index].msg)
- {
- arg = &argv[i][cl_options[opt_index].opt_len + 1];
- if (arg[0] == '\0')
- {
- arg = argv[++i];
- if (!arg)
- {
- cpp_error (pfile, DL_ERROR,
- cl_options[opt_index].msg, argv[i - 1]);
- return argc;
- }
- }
- }
-
- switch (opt_code)
- {
- case N_OPTS: /* Shut GCC up. */
- break;
-
- case OPT_D:
- new_pending_directive (pend, arg, cpp_define);
- break;
- case OPT_iprefix:
- CPP_OPTION (pfile, include_prefix) = arg;
- CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
- break;
-
- case OPT_MG:
- CPP_OPTION (pfile, print_deps_missing_files) = 1;
- break;
- case OPT_M:
- /* When doing dependencies with -M or -MM, suppress normal
- preprocessed output, but still do -dM etc. as software
- depends on this. Preprocessed output occurs if -MD, -MMD
- or environment var dependency generation is used. */
- CPP_OPTION (pfile, print_deps) = 2;
- CPP_OPTION (pfile, no_output) = 1;
- CPP_OPTION (pfile, inhibit_warnings) = 1;
- break;
- case OPT_MM:
- CPP_OPTION (pfile, print_deps) = 1;
- CPP_OPTION (pfile, no_output) = 1;
- CPP_OPTION (pfile, inhibit_warnings) = 1;
- break;
- case OPT_MF:
- CPP_OPTION (pfile, deps_file) = arg;
- break;
- case OPT_MP:
- CPP_OPTION (pfile, deps_phony_targets) = 1;
- break;
- case OPT_MQ:
- case OPT_MT:
- /* Add a target. -MQ quotes for Make. */
- deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
- break;
-
- case OPT_MD:
- CPP_OPTION (pfile, print_deps) = 2;
- CPP_OPTION (pfile, deps_file) = arg;
- break;
- case OPT_MMD:
- CPP_OPTION (pfile, print_deps) = 1;
- CPP_OPTION (pfile, deps_file) = arg;
- break;
-
- case OPT_A:
- if (arg[0] == '-')
- {
- /* -A with an argument beginning with '-' acts as
- #unassert on whatever immediately follows the '-'.
- If "-" is the whole argument, we eliminate all
- predefined macros and assertions, including those
- that were specified earlier on the command line.
- That way we can get rid of any that were passed
- automatically in from GCC. */
-
- if (arg[1] == '\0')
- {
- free_chain (pend->directive_head);
- pend->directive_head = NULL;
- pend->directive_tail = NULL;
- }
- else
- new_pending_directive (pend, arg + 1, cpp_unassert);
- }
- else
- new_pending_directive (pend, arg, cpp_assert);
- break;
- case OPT_U:
- new_pending_directive (pend, arg, cpp_undef);
- break;
- case OPT_I: /* Add directory to path for includes. */
- if (!strcmp (arg, "-"))
- {
- /* -I- means:
- Use the preceding -I directories for #include "..."
- but not #include <...>.
- Don't search the directory of the present file
- for #include "...". (Note that -I. -I- is not the same as
- the default setup; -I. uses the compiler's working dir.) */
- if (! CPP_OPTION (pfile, ignore_srcdir))
- {
- pend->quote_head = pend->brack_head;
- pend->quote_tail = pend->brack_tail;
- pend->brack_head = 0;
- pend->brack_tail = 0;
- CPP_OPTION (pfile, ignore_srcdir) = 1;
- }
- else
- {
- cpp_error (pfile, DL_ERROR, "-I- specified twice");
- return argc;
- }
- }
- else
- append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
- break;
- case OPT_isystem:
- /* Add directory to beginning of system include path, as a system
- include directory. */
- append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
- break;
- case OPT_include:
- case OPT_imacros:
- {
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
- o->arg = arg;
- o->next = NULL;
-
- if (opt_code == OPT_include)
- APPEND (pend, include, o);
- else
- APPEND (pend, imacros, o);
- }
- break;
- case OPT_iwithprefix:
- /* Add directory to end of path for includes,
- with the default prefix at the front of its name. */
- /* fall through */
- case OPT_iwithprefixbefore:
- /* Add directory to main path for includes,
- with the default prefix at the front of its name. */
- {
- char *fname;
- int len;
-
- len = strlen (arg);
-
- if (CPP_OPTION (pfile, include_prefix) != 0)
- {
- size_t ipl = CPP_OPTION (pfile, include_prefix_len);
- fname = xmalloc (ipl + len + 1);
- memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
- memcpy (fname + ipl, arg, len + 1);
- }
- else if (cpp_GCC_INCLUDE_DIR_len)
- {
- fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
- memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
- memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
- }
- else
- fname = xstrdup (arg);
-
- append_include_chain (pfile, fname,
- opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
- }
- break;
- case OPT_idirafter:
- /* Add directory to end of path for includes. */
- append_include_chain (pfile, xstrdup (arg), AFTER, 0);
- break;
- }
- }
- 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;
-}
-
-/* Extra processing when all options are parsed, after all calls to
- cpp_handle_option[s]. Consistency checks etc. */
-void
-cpp_post_options (pfile)
- cpp_reader *pfile;
-{
- /* Canonicalize in_fname and out_fname. We guarantee they are not
- NULL, and that the empty string represents stdin / stdout. */
- if (CPP_OPTION (pfile, in_fname) == NULL
- || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
- CPP_OPTION (pfile, in_fname) = "";
-
/* -Wtraditional is not useful in C++ mode. */
if (CPP_OPTION (pfile, cplusplus))
CPP_OPTION (pfile, warn_traditional) = 0;
- /* The compiler front ends override this, but I think this is the
- appropriate setting for the library. */
- CPP_OPTION (pfile, warn_long_long)
- = ((CPP_OPTION (pfile, pedantic) && !CPP_OPTION (pfile, c99))
- || CPP_OPTION (pfile, warn_traditional));
-
/* Permanently disable macro expansion if we are rescanning
preprocessed text. Read preprocesed source in ISO mode. */
if (CPP_OPTION (pfile, preprocessed))
CPP_OPTION (pfile, traditional) = 0;
}
- /* Traditional CPP does not accurately track column information. */
- if (CPP_OPTION (pfile, traditional))
- CPP_OPTION (pfile, show_column) = 0;
-
- /* -dM and dependencies suppress normal output; do it here so that
- the last -d[MDN] switch overrides earlier ones. */
- if (CPP_OPTION (pfile, dump_macros) == dump_only)
- CPP_OPTION (pfile, no_output) = 1;
+ if (CPP_OPTION (pfile, warn_trigraphs) == 2)
+ CPP_OPTION (pfile, warn_trigraphs) = !CPP_OPTION (pfile, trigraphs);
- /* Disable -dD, -dN and -dI if normal output is suppressed. Allow
- -dM since at least glibc relies on -M -dM to work. */
- if (CPP_OPTION (pfile, no_output))
+ if (CPP_OPTION (pfile, traditional))
{
- if (CPP_OPTION (pfile, dump_macros) != dump_only)
- CPP_OPTION (pfile, dump_macros) = dump_none;
- CPP_OPTION (pfile, dump_includes) = 0;
+ /* Traditional CPP does not accurately track column information. */
+ CPP_OPTION (pfile, show_column) = 0;
+ CPP_OPTION (pfile, trigraphs) = 0;
+ CPP_OPTION (pfile, warn_trigraphs) = 0;
}
}
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