--- /dev/null
+/* CPP Library.
+ * Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
+ * Written by Per Bothner, 1994-95.
+ * Based on CCCP program by by Paul Rubin, June 1986
+ * Adapted to ANSI C, Richard Stallman, Jan 1987
+ * Copyright (C) 2003-2011 Kim Woelders
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * In other words, you are welcome to use, share and improve this program.
+ * You are forbidden to forbid anyone else to use, share and improve
+ * what you give them. Help stamp out software-hoarding! */
+
+const char *version_string = "0.0.0";
+
+#include "config.h"
+
+#ifdef __EMX__
+#include <strings.h>
+#endif
+
+#ifndef STANDARD_INCLUDE_DIR
+#define STANDARD_INCLUDE_DIR "/usr/include"
+#endif
+
+#ifndef LOCAL_INCLUDE_DIR
+#define LOCAL_INCLUDE_DIR "/usr/local/include"
+#endif
+
+#include "cpplib.h"
+#include "cpphash.h"
+
+#ifndef STDC_VALUE
+#define STDC_VALUE 1
+#endif
+
+/* By default, colon separates directories in a path. */
+#ifndef PATH_SEPARATOR
+#define PATH_SEPARATOR ':'
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+
+#ifndef VMS
+#ifndef USG
+#include <time.h>
+#include <sys/time.h> /* for __DATE__ and __TIME__ */
+#include <sys/resource.h>
+#else
+#include <sys/param.h> /* CYGNUS LOCAL: shebs -noquiet */
+#include <sys/times.h>
+#include <time.h>
+#include <fcntl.h>
+#endif /* USG */
+#endif /* not VMS */
+
+/* This defines "errno" properly for VMS, and gives us EACCES. */
+#include <errno.h>
+
+#ifndef O_RDONLY
+#define O_RDONLY 0
+#endif
+
+#undef MIN
+#undef MAX
+#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
+#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
+
+#ifndef S_ISREG
+#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+#endif
+
+#ifndef S_ISDIR
+#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#endif
+
+/* Define a generic NULL if one hasn't already been defined. */
+
+#ifndef GENERIC_PTR
+#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
+#define GENERIC_PTR void *
+#else
+#define GENERIC_PTR char *
+#endif
+#endif
+
+#ifndef INCLUDE_LEN_FUDGE
+#define INCLUDE_LEN_FUDGE 0
+#endif
+
+#define USE_FILE_NAME_MAPS 0
+
+/* Symbols to predefine. */
+
+#ifdef CPP_PREDEFINES
+static const char *predefs = CPP_PREDEFINES;
+
+#else
+static const char *predefs = "";
+
+#endif
+
+/* We let tm.h override the types used here, to handle trivial differences
+ * such as the choice of unsigned int or long unsigned int for size_t.
+ * When machines start needing nontrivial differences in the size type,
+ * it would be best to do something here to figure out automatically
+ * from other information what type to use. */
+
+/* The string value for __SIZE_TYPE__. */
+
+#ifndef SIZE_TYPE
+#define SIZE_TYPE "long unsigned int"
+#endif
+
+/* The string value for __PTRDIFF_TYPE__. */
+
+#ifndef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "long int"
+#endif
+
+/* The string value for __WCHAR_TYPE__. */
+
+#ifndef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+#endif
+#define CPP_WCHAR_TYPE(PFILE) \
+ (CPP_OPTIONS (PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
+
+/* The string value for __USER_LABEL_PREFIX__ */
+
+#ifndef USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX ""
+#endif
+
+/* The string value for __REGISTER_PREFIX__ */
+
+#ifndef REGISTER_PREFIX
+#define REGISTER_PREFIX ""
+#endif
+
+struct directive {
+ int length;
+ int (*func) (cpp_reader * pfile, struct directive * keyword,
+ unsigned char *buf, unsigned char *limit);
+ const char *name;
+ enum node_type type;
+ char command_reads_line;
+ char traditional_comments;
+ char pass_thru;
+};
+
+/* In the definition of a #assert name, this structure forms
+ * a list of the individual values asserted.
+ * Each value is itself a list of "tokens".
+ * These are strings that are compared by name. */
+
+struct tokenlist_list {
+ struct tokenlist_list *next;
+ struct arglist *tokens;
+};
+
+struct assertion_hashnode {
+ struct assertion_hashnode *next; /* double links for easy deletion */
+ struct assertion_hashnode *prev;
+ /* also, a back pointer to this node's hash
+ * chain is kept, in case the node is the head
+ * of the chain and gets deleted. */
+ struct assertion_hashnode **bucket_hdr;
+ int length; /* length of token, for quick comparison */
+ char *name; /* the actual name */
+ /* List of token-sequences. */
+ struct tokenlist_list *value;
+};
+
+#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[(unsigned char)(*p)]) p++; } while (0)
+#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[(unsigned char)(*p)]) p++; } while (0)
+
+#define PEEKN(N) (CPP_BUFFER (pfile)->rlimit - CPP_BUFFER (pfile)->cur >= (N) ? CPP_BUFFER (pfile)->cur[N] : EOF)
+#define FORWARD(N) CPP_FORWARD (CPP_BUFFER (pfile), (N))
+#define GETC() CPP_BUF_GET (CPP_BUFFER (pfile))
+#define PEEKC() CPP_BUF_PEEK (CPP_BUFFER (pfile))
+/* CPP_IS_MACRO_BUFFER is true if the buffer contains macro expansion.
+ * (Note that it is false while we're expanding marco *arguments*.) */
+#define CPP_IS_MACRO_BUFFER(PBUF) ((PBUF)->cleanup == macro_cleanup)
+
+/* Move all backslash-newline pairs out of embarrassing places.
+ * Exchange all such pairs following BP
+ * with any potentially-embarrassing characters that follow them.
+ * Potentially-embarrassing characters are / and *
+ * (because a backslash-newline inside a comment delimiter
+ * would cause it not to be recognized). */
+
+#define NEWLINE_FIX \
+ do {while (PEEKC() == '\\' && PEEKN(1) == '\n') FORWARD(2); } while(0)
+
+/* Same, but assume we've already read the potential '\\' into C. */
+#define NEWLINE_FIX1(C) do { \
+ while ((C) == '\\' && PEEKC() == '\n') { FORWARD(1); (C) = GETC(); }\
+ } while(0)
+
+/* Name under which this program was invoked. */
+
+char *progname;
+
+struct cpp_pending {
+ struct cpp_pending *next;
+ const char *cmd;
+ const char *arg;
+};
+
+/* Structure returned by create_definition */
+typedef struct {
+ struct definition *defn;
+ char *symnam;
+ int symlen;
+} MACRODEF;
+
+/* Forward declarations. */
+typedef struct file_name_list file_name_list;
+
+static void add_import(cpp_reader * pfile, int fd, char *fname);
+static int finclude(cpp_reader * pfile, int f, const char *fname,
+ int system_header_p, file_name_list * dirptr);
+static void validate_else(cpp_reader * pfile, const char *directive);
+static int comp_def_part(int first, unsigned char *beg1, int len1,
+ unsigned char *beg2, int len2, int last);
+static int lookup_import(cpp_reader * pfile, char *filename,
+ file_name_list * searchptr);
+static int redundant_include_p(cpp_reader * pfile, char *name);
+
+static int is_system_include(cpp_reader * pfile, char *filename);
+
+static int open_include_file(cpp_reader * pfile, char *filename,
+ file_name_list * searchptr);
+static int check_macro_name(cpp_reader * pfile, unsigned char *symname,
+ const char *usage);
+
+static int compare_token_lists(struct arglist *l1, struct arglist *l2);
+static HOST_WIDE_INT eval_if_expression(cpp_reader * pfile, unsigned char *buf,
+ int length);
+
+static int file_size_and_mode(int fd, int *mode_pointer,
+ long int *size_pointer);
+static struct arglist *read_token_list(cpp_reader * pfile, int *error_flag);
+static void free_token_list(struct arglist *tokens);
+static int safe_read(int desc, char *ptr, int len);
+static void push_macro_expansion(cpp_reader * pfile,
+ unsigned char *x,
+ int xbuf_len, HASHNODE * hp);
+
+static struct cpp_pending *nreverse_pending(struct cpp_pending *list);
+static char *savestring(const char *input);
+
+static void conditional_skip(cpp_reader * pfile, int skip,
+ enum node_type type,
+ unsigned char *control_macro);
+static void skip_if_group(cpp_reader * pfile, int any);
+
+static void cpp_error_with_line(cpp_reader * pfile, int line,
+ int column, const char *msg);
+static void cpp_pedwarn_with_line(cpp_reader * pfile, int line,
+ int column, const char *msg);
+static void cpp_pedwarn_with_file_and_line(cpp_reader * pfile,
+ const char *file, int line,
+ const char *msg,
+ const char *arg1,
+ const char *arg2,
+ const char *arg3);
+static void cpp_error_from_errno(cpp_reader * pfile, const char *name);
+
+static cpp_buffer *cpp_push_buffer(cpp_reader * pfile, unsigned char *buffer,
+ long length);
+static cpp_buffer *cpp_pop_buffer(cpp_reader * pfile);
+
+/* Last arg to output_line_command. */
+enum file_change_code {
+ same_file, enter_file, leave_file
+};
+
+/* 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(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_line(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *unused1, unsigned char *unused2);
+
+static int do_include(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *unused1, unsigned char *unused2);
+
+static int do_undef(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_error(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_pragma(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_ident(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_if(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_xifdef(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_else(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_elif(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_endif(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_assert(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_unassert(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+static int do_warning(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit);
+
+struct arglist *reverse_token_list(struct arglist *tokens);
+
+static int parse_name(cpp_reader * pfile, int c);
+
+static void parse_set_mark(struct parse_marker *pmark,
+ cpp_reader * pfile);
+static void parse_clear_mark(struct parse_marker *pmark);
+static void parse_goto_mark(struct parse_marker *pmark,
+ cpp_reader * pfile);
+static void parse_move_mark(struct parse_marker *pmark,
+ cpp_reader * pfile);
+
+struct file_name_list {
+ file_name_list *next;
+ char *fname;
+ /* If the following is nonzero, it is a macro name.
+ * Don't include the file again if that macro is defined. */
+ unsigned char *control_macro;
+ /* If the following is nonzero, it is a C-language system include
+ * directory. */
+ int c_system_include_path;
+ /* Mapping of file names for this directory. */
+ struct file_name_map *name_map;
+ /* Non-zero if name_map is valid. */
+ int got_name_map;
+};
+
+/* If a buffer's dir field is SELF_DIR_DUMMY, it means the file was found
+ * via the same directory as the file that #included it. */
+#define SELF_DIR_DUMMY ((file_name_list*)(~0))
+
+/* #include "file" looks in source file dir, then stack. */
+/* #include <file> just looks in the stack. */
+/* -I directories are added to the end, then the defaults are added. */
+/* The */
+static struct default_include {
+ const char *fname; /* The name of the directory. */
+ int cplusplus; /* Only look here if we're compiling C++. */
+ int cxx_aware; /* Includes in this directory don't need to
+ * be wrapped in extern "C" when compiling
+ * C++. */
+} include_defaults_array[]
+#ifdef INCLUDE_DEFAULTS
+ = INCLUDE_DEFAULTS;
+
+#else
+ =
+{
+ /* Pick up GNU C++ specific include files. */
+ {
+ GPLUSPLUS_INCLUDE_DIR, 1, 1}
+ ,
+#ifdef CROSS_COMPILE
+ /* This is the dir for fixincludes. Put it just before
+ * the files that we fix. */
+ {
+ GCC_INCLUDE_DIR, 0, 0}
+ ,
+ /* For cross-compilation, this dir name is generated
+ * automatically in Makefile.in. */
+ {
+ CROSS_INCLUDE_DIR, 0, 0}
+ ,
+ /* This is another place that the target system's headers might be. */
+ {
+ TOOL_INCLUDE_DIR, 0, 1}
+ ,
+#else /* not CROSS_COMPILE */
+ /* This should be /usr/local/include and should come before
+ * the fixincludes-fixed header files. */
+ {
+ LOCAL_INCLUDE_DIR, 0, 1}
+ ,
+ /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
+ * Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
+ {
+ TOOL_INCLUDE_DIR, 0, 1}
+ ,
+ /* This is the dir for fixincludes. Put it just before
+ * the files that we fix. */
+ {
+ GCC_INCLUDE_DIR, 0, 0}
+ ,
+ /* Some systems have an extra dir of include files. */
+#ifdef SYSTEM_INCLUDE_DIR
+ {
+ SYSTEM_INCLUDE_DIR, 0, 0}
+ ,
+#endif
+ {
+ STANDARD_INCLUDE_DIR, 0, 0}
+ ,
+#endif /* not CROSS_COMPILE */
+ {
+ 0, 0, 0}
+};
+
+#endif /* no INCLUDE_DEFAULTS */
+
+/* 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, 0, 1, 0},
+ {5, do_xifdef, "ifdef", T_IFDEF, 1, 0, 0},
+ {6, do_xifdef, "ifndef", T_IFNDEF, 1, 0, 0},
+ {7, do_include, "include", T_INCLUDE, 1, 0, 0},
+ {12, do_include, "include_next", T_INCLUDE_NEXT, 1, 0, 0},
+ {6, do_include, "import", T_IMPORT, 1, 0, 0},
+ {5, do_endif, "endif", T_ENDIF, 1, 0, 0},
+ {4, do_else, "else", T_ELSE, 1, 0, 0},
+ {2, do_if, "if", T_IF, 1, 0, 0},
+ {4, do_elif, "elif", T_ELIF, 1, 0, 0},
+ {5, do_undef, "undef", T_UNDEF, 0, 0, 0},
+ {5, do_error, "error", T_ERROR, 0, 0, 0},
+ {7, do_warning, "warning", T_WARNING, 0, 0, 0},
+ {6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
+ {4, do_line, "line", T_LINE, 1, 0, 0},
+ {5, do_ident, "ident", T_IDENT, 1, 0, 1},
+#ifdef SCCS_DIRECTIVE
+ {4, do_sccs, "sccs", T_SCCS, 0, 0, 0},
+#endif
+ {6, do_assert, "assert", T_ASSERT, 1, 0, 0},
+ {8, do_unassert, "unassert", T_UNASSERT, 1, 0, 0},
+ {-1, 0, "", T_UNUSED, 0, 0, 0},
+};
+
+/* table to tell if char can be part of a C identifier. */
+unsigned char is_idchar[256];
+
+/* table to tell if char can be first char of a c identifier. */
+unsigned char is_idstart[256];
+
+/* table to tell if c is horizontal space. */
+unsigned char is_hor_space[256];
+
+/* table to tell if c is horizontal or vertical space. */
+static unsigned char is_space[256];
+
+/* Initialize syntactic classifications of characters. */
+
+static void
+initialize_char_syntax(struct cpp_options *opts)
+{
+ 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[(unsigned char)'_'] = 1;
+ is_idstart[(unsigned char)'_'] = 1;
+ is_idchar[(unsigned char)'$'] = opts->dollars_in_ident;
+ is_idstart[(unsigned char)'$'] = opts->dollars_in_ident;
+
+ /* horizontal space table */
+ is_hor_space[(unsigned char)' '] = 1;
+ is_hor_space[(unsigned char)'\t'] = 1;
+ is_hor_space[(unsigned char)'\v'] = 1;
+ is_hor_space[(unsigned char)'\f'] = 1;
+ is_hor_space[(unsigned char)'\r'] = 1;
+
+ is_space[(unsigned char)' '] = 1;
+ is_space[(unsigned char)'\t'] = 1;
+ is_space[(unsigned char)'\v'] = 1;
+ is_space[(unsigned char)'\f'] = 1;
+ is_space[(unsigned char)'\n'] = 1;
+ is_space[(unsigned char)'\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(cpp_reader * pfile, const char *src)
+{
+ unsigned 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;
+ }
+}
+
+/* Make sure PFILE->token_buffer will hold at least N more chars. */
+
+void
+cpp_grow_buffer(cpp_reader * pfile, long n)
+{
+ long old_written = CPP_WRITTEN(pfile);
+
+ pfile->token_buffer_size = n + 2 * pfile->token_buffer_size;
+ pfile->token_buffer =
+ (unsigned 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(cpp_reader * pfile, unsigned char *str)
+{
+ unsigned char *buf, *p;
+
+ buf = str;
+ p = str;
+ if (!is_idstart[*p])
+ {
+ cpp_error(pfile, "malformed option `-D %s'", str);
+ return;
+ }
+ while (is_idchar[*++p])
+ ;
+ if (*p == 0)
+ {
+ buf = (unsigned char *)alloca(p - buf + 4);
+ strcpy((char *)buf, (const char *)str);
+ strcat((char *)buf, " 1");
+ }
+ else if (*p != '=')
+ {
+ cpp_error(pfile, "malformed option `-D %s'", str);
+ return;
+ }
+ else
+ {
+ unsigned char *q;
+
+ /* Copy the entire option so we can modify it. */
+ buf = (unsigned char *)alloca(2 * strlen((char *)str) + 1);
+ strncpy((char *)buf, (const char *)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((char *)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(cpp_reader * pfile, const char *option, const char *str)
+{
+ unsigned char *buf, *p, *q;
+
+ /* Copy the entire option so we can modify it. */
+ buf = (unsigned char *)alloca(strlen((char *)str) + 1);
+ strcpy((char *)buf, (const char *)str);
+ /* Scan for any backslash-newline and remove it. */
+ p = q = buf;
+ while (*p)
+ {
+ *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;
+ }
+ cpp_push_buffer(pfile, buf, strlen((char *)buf));
+ do_assert(pfile, NULL, NULL, NULL);
+ cpp_pop_buffer(pfile);
+}
+
+/* Append a chain of `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(cpp_reader * pfile, file_name_list * first,
+ file_name_list * last)
+{
+ struct cpp_options *opts = CPP_OPTIONS(pfile);
+ file_name_list *dir;
+
+ if (!first || !last)
+ return;
+
+ if (!opts->include)
+ opts->include = first;
+ else
+ opts->last_include->next = first;
+
+ if (!opts->first_bracket_include)
+ 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(cpp_reader * pfile, const 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++] = ' ';
+ memcpy(&pfile->deps_buffer[pfile->deps_size], string, 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(cpp_reader * pfile, char *path)
+{
+ char *p;
+
+ p = path;
+
+ if (*p)
+ while (1)
+ {
+ char *q = p;
+ char *name;
+ 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);
+ memcpy(name, p, q - p);
+ name[q - p] = 0;
+ }
+
+ dirtmp = (file_name_list *) xmalloc(sizeof(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
+init_parse_options(struct cpp_options *opts)
+{
+ memset((char *)opts, 0, 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->dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
+
+ 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->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;
+}
+
+static enum cpp_token
+null_underflow(cpp_reader * pfile __UNUSED__)
+{
+ return CPP_EOF;
+}
+
+static int
+null_cleanup(cpp_buffer * pbuf __UNUSED__, cpp_reader * pfile __UNUSED__)
+{
+ return 0;
+}
+
+static int
+macro_cleanup(cpp_buffer * pbuf, cpp_reader * pfile __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;
+}
+
+static int
+file_cleanup(cpp_buffer * pbuf, cpp_reader * pfile __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(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(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(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(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. */
+
+static int
+handle_directive(cpp_reader * pfile)
+{
+ int c;
+ struct directive *kt;
+ int ident_length;
+ long after_ident = 0;
+ unsigned 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;
+ }
+ /*
+ * 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, (const char *)ident, ident_length))
+ break;
+ }
+
+ if (!kt->command_reads_line)
+ {
+ /* Nonzero means do not delete comments within the directive.
+ * #define needs this when -traditional. */
+ int comments = CPP_TRADITIONAL(pfile)
+ && kt->traditional_comments;
+ 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;
+ }
+ /* For #pragma and #define, we may want to pass through the directive.
+ * Other directives may create output, but we don't want the directive
+ * itself out, so we pop it now. For example #include may write a #line
+ * command (see comment in do_include), and 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->pass_thru && kt->type != T_DEFINE)
+ CPP_SET_WRITTEN(pfile, old_written);
+
+ (*kt->func) (pfile, kt, pfile->token_buffer + after_ident, line_end);
+ if (kt->pass_thru
+ || (kt->type == T_DEFINE
+ && CPP_OPTIONS(pfile)->dump_macros == dump_definitions))
+ {
+ /* Just leave the entire #define in the output stack. */
+ }
+ else if (kt->type == T_DEFINE
+ && CPP_OPTIONS(pfile)->dump_macros == dump_names)
+ {
+ unsigned char *p = pfile->token_buffer + old_written + 7; /* Skip "#define". */
+
+ SKIP_WHITE_SPACE(p);
+ while (is_idchar[*p])
+ p++;
+ pfile->limit = p;
+ CPP_PUTC(pfile, '\n');
+ }
+ else if (kt->type == T_DEFINE)
+ 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(char *buf, char *limit, cpp_reader * pfile,
+ struct directive *keyword)
+{
+ 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);
+}
+
+/* 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;
+ 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(cpp_reader * pfile, unsigned char *buf, unsigned char *limit,
+ int nargs, struct arglist *arglist)
+{
+ DEFINITION *defn;
+ unsigned char *p, *lastp, *exp_p;
+ reflist *endpat = NULL;
+
+ /* Pointer to first nonspace after last ## seen. */
+ unsigned char *concat = 0;
+
+ /* Pointer to first nonspace after last single-# seen. */
+ unsigned 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 = (unsigned 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;
+ unsigned 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])
+ 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
+ * 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++;
+ }
+ break;
+ }
+ }
+
+ /* Handle the start of a symbol. */
+ if (is_idchar[c] && nargs > 0)
+ {
+ unsigned 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])
+ {
+ struct arglist *arg;
+
+ for (arg = arglist; arg; arg = arg->next)
+ {
+ reflist *tpat;
+
+ if (arg->name[0] == c
+ && arg->length == id_len
+ && strncmp((const char *)arg->name,
+ (const char *)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 = (reflist *) xmalloc(sizeof(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)
+ defn->pattern = tpat;
+ else
+ endpat->next = tpat;
+ endpat = tpat;
+
+ tpat->argno = arg->argno;
+ tpat->nchars = exp_p - lastp;
+ {
+ unsigned 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)
+ {
+ unsigned 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();
+
+ 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 void
+create_definition(MACRODEF * mdef, unsigned char *buf, unsigned char *limit,
+ cpp_reader * pfile, int predefinition)
+{
+ unsigned char *bp; /* temp ptr into input buffer */
+ unsigned char *symname; /* remember where symbol name starts */
+ int sym_length; /* and how long it is */
+ int rest_args = 0;
+ long line, col;
+ const char *file =
+ CPP_BUFFER(pfile) ? CPP_BUFFER(pfile)->nominal_fname : "";
+ DEFINITION *defn;
+ int arglengths = 0; /* Accumulate lengths of arg names
+ * plus number of args. */
+
+ 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 = (char *)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 ((unsigned)(limit - bp) > REST_EXTENSION_LENGTH &&
+ strncmp(rest_extension, (const char *)bp,
+ REST_EXTENSION_LENGTH) == 0)
+ {
+ rest_args = 1;
+ temp->rest_args = 1;
+ break;
+ }
+ }
+ temp->length = (char *)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; otemp = otemp->next)
+ if (temp->length == otemp->length &&
+ strncmp((const char *)temp->name,
+ (const char *)otemp->name, temp->length) == 0)
+ {
+ char *name;
+
+ name = (char *)alloca(temp->length + 1);
+ strncpy(name, (const char *)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 = (unsigned char *)xmalloc(arglengths + 1);
+ {
+ struct arglist *temp;
+ int i = 0;
+
+ for (temp = arg_ptrs; temp; temp = temp->next)
+ {
+ memcpy(&defn->args.argnames[i], temp->name, temp->length);
+ i += temp->length;
+ if (temp->next)
+ {
+ 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);
+ defn->args.argnames = (unsigned char *)"";
+ }
+
+ defn->line = line;
+ defn->file = file;
+
+ /* OP is null if this is a predefinition */
+ defn->predefined = predefinition;
+ mdef->defn = defn;
+ mdef->symnam = (char *)symname;
+ mdef->symlen = sym_length;
+
+ return;
+
+ nope:
+ mdef->defn = 0;
+}
+
+/* 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(cpp_reader * pfile, unsigned char *symname, const char *usage)
+{
+ unsigned char *p;
+ int sym_length;
+
+ for (p = symname; is_idchar[*p]; p++)
+ ;
+ sym_length = p - symname;
+ if (sym_length == 0)
+ {
+ cpp_error(pfile, "invalid %s name", usage);
+ }
+ else if (!is_idstart[*symname])
+ {
+ unsigned char *msg; /* what pain... */
+
+ msg = (unsigned char *)alloca(sym_length + 1);
+ memcpy(msg, symname, sym_length);
+ msg[sym_length] = 0;
+ cpp_error(pfile, "invalid %s name `%s'", usage, msg);
+ }
+ else
+ {
+ if (!strncmp((const char *)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(DEFINITION * d1, DEFINITION * d2)
+{
+ reflist *a1, *a2;
+ unsigned char *p1 = d1->expansion;
+ unsigned char *p2 = d2->expansion;
+ int first = 1;
+
+ if (d1->nargs != d2->nargs)
+ return 1;
+ if (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((const char *)p1, (const char *)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(int first, unsigned char *beg1, int len1,
+ unsigned char *beg2, int len2, int last)
+{
+ unsigned char *end1 = beg1 + len1;
+ unsigned 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(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *buf, unsigned char *limit)
+{
+ int hashcode;
+ MACRODEF mdef;
+ HASHNODE *hp;
+
+ create_definition(&mdef, buf, limit, pfile, !keyword);
+ if (!mdef.defn)
+ return 1;
+
+ hashcode = hashf(mdef.symnam, mdef.symlen, HASHSIZE);
+
+ if ((hp = cpp_lookup(mdef.symnam, mdef.symlen, hashcode)))
+ {
+ 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(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)
+ {
+ 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((char *)buf, (char *)limit, pfile, keyword);
+
+ msg = (char *)alloca(mdef.symlen + 22);
+ *msg = '`';
+ memcpy(msg + 1, mdef.symnam, mdef.symlen);
+ strcpy((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",
+ NULL, NULL, NULL);
+ }
+ /* 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((char *)buf, (char *)limit, pfile, keyword);
+ install(mdef.symnam, mdef.symlen, T_MACRO, 0,
+ (char *)mdef.defn, hashcode);
+ }
+
+ return 0;
+}
+
+/* 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;
+};
+
+cpp_buffer *
+cpp_push_buffer(cpp_reader * pfile, unsigned char *buffer, long length)
+{
+#ifdef STATIC_BUFFERS
+ cpp_buffer *buf = CPP_BUFFER(pfile);
+
+ if (buf == pfile->buffer_stack)
+ cpp_fatal("macro or `#include' recursion too deep");
+ buf--;
+ memset((char *)buf, 0, sizeof(cpp_buffer));
+ CPP_BUFFER(pfile) = buf;
+#else
+ cpp_buffer *buf = (cpp_buffer *) xmalloc(sizeof(cpp_buffer));
+
+ memset((char *)buf, 0, sizeof(cpp_buffer));
+ CPP_PREV_BUFFER(buf) = CPP_BUFFER(pfile);
+ CPP_BUFFER(pfile) = buf;
+#endif
+ 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;
+}
+
+static cpp_buffer *
+cpp_pop_buffer(cpp_reader * pfile)
+{
+ cpp_buffer *buf = CPP_BUFFER(pfile);
+
+#ifdef STATIC_BUFFERS
+ (*buf->cleanup) (buf, pfile);
+ return ++CPP_BUFFER(pfile);
+#else
+ cpp_buffer *next_buf = CPP_PREV_BUFFER(buf);
+
+ (*buf->cleanup) (buf, pfile);
+ CPP_BUFFER(pfile) = next_buf;
+ free(buf);
+ return next_buf;
+#endif
+}
+
+/* Scan until CPP_BUFFER (PFILE) is exhausted into PFILE->token_buffer.
+ * Pop the buffer when done. */
+
+static void
+cpp_scan_buffer(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(cpp_reader * pfile, unsigned char *buf, int length)
+{
+ cpp_buffer *ip;
+ unsigned char *limit = buf + length;
+ unsigned char *buf1;
+
+ if (length < 0)
+ abort();
+
+ /* Set up the input on the input stack. */
+
+ buf1 = (unsigned char *)alloca(length + 1);
+ {
+ unsigned char *p1 = buf;
+ unsigned char *p2 = buf1;
+
+ while (p1 != limit)
+ *p2++ = *p1++;
+ }
+ buf1[length] = 0;
+
+ ip = cpp_push_buffer(pfile, buf1, length);
+ ip->has_escapes = 1;
+
+ /* Scan the input, create the output. */
+ cpp_scan_buffer(pfile);
+
+ CPP_NUL_TERMINATE(pfile);
+}
+
+static void
+adjust_position(unsigned char *buf, unsigned char *limit, long *linep,
+ long *colp)
+{
+ while (buf < limit)
+ {
+ unsigned char ch = *buf++;
+
+ if (ch == '\n')
+ (*linep)++, (*colp) = 1;
+ else
+ (*colp)++;
+ }
+}
+
+/* Move line_base forward, updating lineno and colno. */
+
+static void
+update_position(cpp_buffer * pbuf)
+{
+ unsigned char *old_pos = pbuf->buf + pbuf->line_base;
+ unsigned char *new_pos = pbuf->cur;
+ struct parse_marker *mark;
+
+ for (mark = pbuf->marks; mark; 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(cpp_buffer * pbuf, long *linep, long *colp)
+{
+ long dummy;
+
+ if (!colp)
+ 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(cpp_reader * pfile)
+{
+ cpp_buffer *ip = CPP_BUFFER(pfile);
+
+ for (; ip != CPP_NULL_BUFFER(pfile); ip = CPP_PREV_BUFFER(ip))
+ if (ip->fname)
+ return ip;
+ return NULL;
+}
+
+static long
+count_newlines(unsigned char *buf, unsigned char *limit)
+{
+ long count = 0;
+
+ while (buf < limit)
+ {
+ unsigned 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(cpp_reader * pfile, int conditional,
+ enum file_change_code file_change)
+{
+ long line, col;
+ cpp_buffer *ip = CPP_BUFFER(pfile);
+
+ if (CPP_OPTIONS(pfile)->no_line_commands
+ || !ip->fname || CPP_OPTIONS(pfile)->no_output)
+ {
+ return;
+ }
+ update_position(ip);
+ line = CPP_BUFFER(pfile)->lineno;
+ col = CPP_BUFFER(pfile)->colno;
+ adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
+
+ 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;
+ }
+ }
+
+ 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), "%d ", (int)line);
+ CPP_ADJUST_WRITTEN(pfile, strlen((char *)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(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;
+
+ token = CPP_OTHER;
+ /* 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(unsigned char *start, int length)
+{
+ unsigned char *ibp;
+ unsigned char *obp;
+ unsigned char *limit;
+ 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(cpp_reader * pfile)
+{
+ if (!pfile->timebuf)
+ {
+ time_t t = time((time_t *) 0);
+
+ pfile->timebuf = localtime(&t);
+ }
+ return pfile->timebuf;
+}
+
+static const 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(HASHNODE * hp, cpp_reader * pfile)
+{
+ const char *buf;
+ char *bufx;
+ int len;
+ int true_indepth;
+ cpp_buffer *ip = NULL;
+ struct tm *timebuf;
+
+ int paren = 0; /* For special `defined' keyword */
+
+ for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
+ {
+ if (!ip)
+ {
+ cpp_error(pfile, "cccp error: not in any file?!");
+ return; /* the show must go on */
+ }
+ if (ip->fname)
+ break;
+ }
+
+ switch (hp->type)
+ {
+ case T_FILE:
+ case T_BASE_FILE:
+ {
+ const char *string;
+
+ if (hp->type == T_BASE_FILE)
+ {
+ while (CPP_PREV_BUFFER(ip))
+ 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;
+ for (ip = CPP_BUFFER(pfile); ip; ip = CPP_PREV_BUFFER(ip))
+ if (ip->fname)
+ true_indepth++;
+
+ bufx = (char *)alloca(8); /* Eight bytes ought to be more than enough */
+ sprintf(bufx, "%d", true_indepth - 1);
+ buf = bufx;
+ break;
+
+ case T_VERSION:
+ bufx = (char *)alloca(3 + strlen(version_string));
+ sprintf(bufx, "\"%s\"", version_string);
+ buf = bufx;
+ 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:
+ bufx = (char *)alloca(4 * sizeof(int));
+ sprintf(bufx, "%d", hp->value.ival);
+ buf = bufx;
+ break;
+
+ case T_SPECLINE:
+ {
+ long line = ip->lineno;
+ long col = ip->colno;
+
+ adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
+
+ bufx = (char *)alloca(10);
+ sprintf(bufx, "%d", (int)line);
+ buf = bufx;
+ }
+ break;
+
+ case T_DATE:
+ case T_TIME:
+ bufx = (char *)alloca(20);
+ timebuf = timestamp(pfile);
+ if (hp->type == T_DATE)
+ sprintf(bufx, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
+ timebuf->tm_mday, timebuf->tm_year + 1900);
+ else
+ sprintf(bufx, "\"%02d:%02d:%02d\"", timebuf->tm_hour,
+ timebuf->tm_min, timebuf->tm_sec);
+ buf = bufx;
+ 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 ((hp = cpp_lookup((const char *)ip->cur, -1, -1)))
+ {
+ buf = " 1 ";
+ }
+ 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;
+}
+
+/* Initialize the built-in macros. */
+
+static void
+initialize_builtins(cpp_reader * pfile)
+{
+ install("__LINE__", -1, T_SPECLINE, 0, 0, -1);
+ install("__DATE__", -1, T_DATE, 0, 0, -1);
+ install("__FILE__", -1, T_FILE, 0, 0, -1);
+ install("__BASE_FILE__", -1, T_BASE_FILE, 0, 0, -1);
+ install("__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, 0, 0, -1);
+ install("__VERSION__", -1, T_VERSION, 0, 0, -1);
+#ifndef NO_BUILTIN_SIZE_TYPE
+ install("__SIZE_TYPE__", -1, T_SIZE_TYPE, 0, 0, -1);
+#endif
+#ifndef NO_BUILTIN_PTRDIFF_TYPE
+ install("__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, 0, 0, -1);
+#endif
+ install("__WCHAR_TYPE__", -1, T_WCHAR_TYPE, 0, 0, -1);
+ install("__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE, 0, 0, -1);
+ install("__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, 0, 0, -1);
+ install("__TIME__", -1, T_TIME, 0, 0, -1);
+ if (!CPP_TRADITIONAL(pfile))
+ install("__STDC__", -1, T_CONST, STDC_VALUE, 0, -1);
+ if (CPP_OPTIONS(pfile)->objc)
+ install("__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)
+ {
+ char directive[2048];
+ struct directive *dp = &directive_table[0];
+ struct tm *timebuf = timestamp(pfile);
+ cpp_buffer *pbuffer = CPP_BUFFER(pfile);
+
+ while (CPP_PREV_BUFFER(pbuffer))
+ pbuffer = CPP_PREV_BUFFER(pbuffer);
+ sprintf(directive, " __BASE_FILE__ \"%s\"\n", pbuffer->nominal_fname);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+
+ sprintf(directive, " __VERSION__ \"%s\"\n", version_string);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+
+#ifndef NO_BUILTIN_SIZE_TYPE
+ sprintf(directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+#endif
+
+#ifndef NO_BUILTIN_PTRDIFF_TYPE
+ sprintf(directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+#endif
+
+ sprintf(directive, " __WCHAR_TYPE__ %s\n", CPP_WCHAR_TYPE(pfile));
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+
+ sprintf(directive, " __DATE__ \"%s %2d %4d\"\n",
+ monthnames[timebuf->tm_mon],
+ timebuf->tm_mday, timebuf->tm_year + 1900);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+
+ sprintf(directive, " __TIME__ \"%02d:%02d:%02d\"\n",
+ timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)], pfile,
+ dp);
+
+ if (!CPP_TRADITIONAL(pfile))
+ {
+ sprintf(directive, " __STDC__ 1");
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)],
+ pfile, dp);
+ }
+ if (CPP_OPTIONS(pfile)->objc)
+ {
+ sprintf(directive, " __OBJC__ 1");
+ output_line_command(pfile, 0, same_file);
+ pass_thru_directive(directive, &directive[strlen(directive)],
+ pfile, dp);
+ }
+ }
+}
+
+/* Return 1 iff a token ending in C1 followed directly by a token C2
+ * could cause mis-tokenization. */
+
+static int
+unsafe_chars(int c1, int 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':
+ 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 'p':
+ 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 'P':
+ 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(cpp_reader * pfile, HASHNODE * hp)
+{
+ int nargs;
+ DEFINITION *defn = hp->value.defn;
+ unsigned char *xbuf;
+ long start_line, start_column;
+ int xbuf_len;
+ struct argdata *args;
+ long old_written = CPP_WRITTEN(pfile);
+
+ int rest_args, rest_zero;
+ int i;
+
+ pfile->output_escapes++;
+ cpp_buf_line_and_col(cpp_file_buffer(pfile), &start_line, &start_column);
+
+ rest_zero = 0;
+ args = NULL;
+ nargs = defn->nargs;
+
+ if (nargs >= 0)
+ {
+ enum cpp_token token;
+
+ token = CPP_OTHER;
+
+ 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)
+ {
+ unsigned char *bp = ARG_BASE + args[0].raw;
+ unsigned 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. */
+ 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
+ {
+ unsigned char *exp = defn->expansion;
+ int offset; /* offset in expansion,
+ * copied a piece at a time */
+ int totlen; /* total amount of exp buffer filled so far */
+ 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; ap = ap->next)
+ {
+ if (ap->stringify)
+ {
+ struct argdata *arg = &args[ap->argno];
+
+ /* Stringify it 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 = (unsigned 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;
+ last_ap = ap, ap = ap->next)
+ {
+ 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 && 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)
+ {
+ memcpy(xbuf + totlen, ARG_BASE + arg->stringified,
+ arg->stringified_length);
+ totlen += arg->stringified_length;
+ }
+ else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL(pfile))
+ {
+ unsigned char *p1 = ARG_BASE + arg->raw;
+ unsigned 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++;
+ }
+ 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] == '-')
+ {
+ unsigned 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;
+ }
+ }
+ memcpy(xbuf + totlen, p1, l1 - p1);
+ totlen += l1 - p1;
+ }
+ else
+ {
+ unsigned 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++] = ' ';
+ }
+ memcpy(xbuf + totlen, expanded, 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 && 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(cpp_reader * pfile, unsigned char *xbuf, int xbuf_len,
+ HASHNODE * hp)
+{
+ cpp_buffer *mbuf = cpp_push_buffer(pfile, xbuf, xbuf_len);
+
+ 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(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(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *unused1 __UNUSED__, unsigned char *unused2 __UNUSED__)
+{
+ int importing = (keyword->type == T_IMPORT);
+ int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
+ char *fname; /* Dynamically allocated fname buffer */
+ unsigned char *fbeg, *fend; /* Beginning and end of fname */
+ enum cpp_token token;
+
+ /* Chain of dirs to search */
+ file_name_list *search_start = CPP_OPTIONS(pfile)->include;
+ file_name_list dsp[1]; /* First in chain, if #include "..." */
+ 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 <...> */
+
+ f = -1; /* JF we iz paranoid! */
+
+ 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;
+
+ /* We have "filename". Figure out directory this source
+ * file is coming from and put it on the front of the list. */
+
+ for (fp = CPP_BUFFER(pfile); fp; fp = CPP_PREV_BUFFER(fp))
+ {
+ int n;
+ const char *ep, *nam;
+
+ if ((nam = fp->nominal_fname))
+ {
+ /* 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 = strrchr(nam, '/');
+#else /* VMS */
+ ep = strrchr(nam, ']');
+ if (!ep)
+ ep = strrchr(nam, '>');
+ if (!ep)
+ ep = strrchr(nam, ':');
+ if (ep)
+ ep++;
+#endif /* VMS */
+ if (ep)
+ {
+ 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;
+ }
+ }
+ }
+ }
+ 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;
+
+ for (fp = CPP_BUFFER(pfile); fp; fp = CPP_PREV_BUFFER(fp))
+ if (fp->fname)
+ {
+ /* 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. */
+
+#ifndef __EMX__
+ if (*fbeg == '/')
+#else
+ if (_fnisabs(fbeg))
+#endif
+ {
+ strncpy(fname, (const char *)fbeg, flen);
+ fname[flen] = 0;
+ if (redundant_include_p(pfile, fname))
+ return 0;
+ if (importing)
+ f = lookup_import(pfile, fname, NULL);
+ else
+ f = open_include_file(pfile, fname, NULL);
+ 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, (const char *)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 (!strchr(fname, '.'))
+ {
+ 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, (const char *)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. */
+
+ 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)
+ {
+ /* This is the first time for this file. */
+ /* Add it to list of files included. */
+
+ ptr = (file_name_list *) xmalloc(sizeof(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)))
+ 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);
+
+ /* Actually process the file */
+ cpp_push_buffer(pfile, NULL, 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(cpp_reader * pfile, char *name)
+{
+ file_name_list *l = pfile->all_include_files;
+
+ for (; l; l = l->next)
+ if (!strcmp(name, l->fname)
+ && l->control_macro
+ && cpp_lookup((const char *)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(cpp_reader * pfile, char *filename)
+{
+ file_name_list *searchptr;
+
+ for (searchptr = CPP_OPTIONS(pfile)->first_system_include; searchptr;
+ searchptr = searchptr->next)
+ if (searchptr->fname)
+ {
+ char *sys_dir = searchptr->fname;
+ 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(cpp_reader * pfile, const char *name, int len, int hash)
+{
+ ASSERTION_HASHNODE *hp;
+ int i, bucket;
+
+ 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)
+ hp->next->prev = hp;
+ hp->length = len;
+ hp->value = 0;
+ hp->name = ((char *)hp) + sizeof(ASSERTION_HASHNODE);
+ memcpy(hp->name, name, len);
+ 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(cpp_reader * pfile, const char *name, int len, int hash)
+{
+ 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(ASSERTION_HASHNODE * hp)
+{
+ struct tokenlist_list *tail;
+
+ if (hp->prev)
+ hp->prev->next = hp->next;
+ if (hp->next)
+ 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 char *
+convert_string(cpp_reader * pfile, char *result, char *in, char *limit,
+ int handle_escapes)
+{
+ unsigned char c;
+
+ c = *in++;
+ if (c != '\"')
+ return NULL;
+ while (in < limit)
+ {
+ c = *in++;
+
+ switch (c)
+ {
+ case '\0':
+ return NULL;
+ case '\"':
+ limit = in;
+ break;
+ case '\\':
+ if (handle_escapes)
+ {
+ char *bpc = in;
+ int i =
+ (unsigned char)cpp_parse_escape(pfile, &bpc);
+
+ in = bpc;
+ if (i >= 0)
+ *result++ = (unsigned 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *unused1 __UNUSED__, unsigned char *unused2 __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");
+
+ token = get_directive_token(pfile);
+
+ if (token == CPP_STRING)
+ {
+ char *fname = (char *)pfile->token_buffer + old_written;
+ char *end_name;
+ static HASHNODE *fname_table[FNAME_HASHSIZE];
+ HASHNODE *hp, **hash_bucket;
+ unsigned 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, (char *)CPP_PWRITTEN(pfile), 1);
+ if (!end_name)
+ {
+ 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; 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)
+ {
+ /* 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);
+ memcpy(hp->value.cpval, fname, 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(cpp_reader * pfile, struct directive *keyword, unsigned char *buf,
+ unsigned char *limit)
+{
+ int sym_length;
+ HASHNODE *hp;
+ unsigned char *orig_buf = buf;
+
+ SKIP_WHITE_SPACE(buf);
+ sym_length = check_macro_name(pfile, buf, "macro");
+
+ while ((hp = cpp_lookup((const char *)buf, sym_length, -1)))
+ {
+ /* 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((char *)orig_buf, (char *)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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf, unsigned char *limit)
+{
+ int length = limit - buf;
+ unsigned char *copy = (unsigned char *)xmalloc(length + 1);
+
+ memcpy(copy, buf, 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf, unsigned char *limit)
+{
+ int length = limit - buf;
+ unsigned char *copy = (unsigned char *)xmalloc(length + 1);
+
+ memcpy(copy, buf, length);
+ copy[length] = 0;
+ SKIP_WHITE_SPACE(copy);
+ cpp_warning(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(cpp_reader * pfile)
+{
+ cpp_buffer *ip = NULL;
+ file_name_list *new_;
+
+ for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
+ {
+ if (!ip)
+ return 0;
+ if (ip->fname)
+ break;
+ }
+
+ new_ = (file_name_list *) xmalloc(sizeof(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;
+}
+
+/* #ident has already been copied to the output file, so just ignore it. */
+
+static int
+do_ident(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf __UNUSED__, unsigned char *limit __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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf, unsigned char *limit __UNUSED__)
+{
+ while (*buf == ' ' || *buf == '\t')
+ buf++;
+
+ if (!strncmp((const char *)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);
+ }
+ if (!strncmp((const char *)buf, "implementation", 14))
+ {
+ /* Be quiet about `#pragma implementation' for a file only if it hasn't
+ * been included yet. */
+ file_name_list *ptr;
+ char *p = (char *)buf + 14, *fname, *inc_fname;
+ int fname_len;
+
+ SKIP_WHITE_SPACE(p);
+ if (*p == '\n' || *p != '\"')
+ return 0;
+
+ fname = p + 1;
+ p = strchr(fname, '\"');
+ fname_len = (p) ? (int)(p - fname) : (int)strlen(fname);
+
+ for (ptr = pfile->all_include_files; ptr; ptr = ptr->next)
+ {
+ inc_fname = strrchr(ptr->fname, '/');
+ inc_fname = inc_fname ? inc_fname + 1 : (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;
+}
+
+/* Just ignore #sccs, on systems where we define it at all. */
+
+/*
+ * 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf, unsigned char *limit)
+{
+ HOST_WIDE_INT value = eval_if_expression(pfile, buf, limit - buf);
+
+ conditional_skip(pfile, value == 0, T_IF, NULL);
+ return 0;
+}
+
+/*
+ * handle a #elif directive by not changing if_stack either.
+ * see the comment above do_else.
+ */
+
+static int
+do_elif(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf, unsigned char *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 (pfile->if_stack->fname
+ && CPP_BUFFER(pfile)->fname
+ && 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(cpp_reader * pfile, unsigned char *buf __UNUSED__,
+ int length __UNUSED__)
+{
+ HASHNODE *save_defined;
+ HOST_WIDE_INT value;
+ long old_written = CPP_WRITTEN(pfile);
+
+ save_defined = install("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(cpp_reader * pfile, struct directive *keyword,
+ unsigned char *unused1 __UNUSED__, unsigned char *unused2 __UNUSED__)
+{
+ int skip;
+ cpp_buffer *ip = CPP_BUFFER(pfile);
+ char *ident;
+ int ident_length;
+ enum cpp_token token;
+ int start_of_file = 0;
+ unsigned 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 = (char *)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(ident, ident_length, -1);
+
+ skip = (!hp) ^ (keyword->type == T_IFNDEF);
+ if (start_of_file && !skip)
+ {
+ control_macro = (unsigned char *)xmalloc(ident_length + 1);
+ memcpy(control_macro, ident, 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);
+
+ 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(cpp_reader * pfile, int skip, enum node_type type,
+ unsigned char *control_macro)
+{
+ IF_STACK_FRAME *temp;
+
+ temp = (IF_STACK_FRAME *) xcalloc(1, sizeof(IF_STACK_FRAME));
+ temp->fname = CPP_BUFFER(pfile)->nominal_fname;
+ 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(cpp_reader * pfile, int any)
+{
+ int c;
+ struct directive *kt;
+ IF_STACK_FRAME *save_if_stack = pfile->if_stack; /* don't pop past here */
+
+ int ident_length;
+ 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);
+ unsigned 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 = (char *)pfile->token_buffer + old_written;
+ pfile->limit = (unsigned char *)ident;
+
+ 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;
+ 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf __UNUSED__, unsigned char *limit __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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf __UNUSED__, unsigned char *limit __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)
+ {
+ /* 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. */
+ {
+ file_name_list *ifile = pfile->all_include_files;
+
+ for (; ifile; 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(cpp_reader * pfile, const 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(cpp_reader * pfile)
+{
+ int c, c2, c3;
+ long old_written = 0;
+ 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)
+ {
+ /* 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);
+ unsigned 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
+ {
+ CPP_RESERVE(pfile, 1);
+ CPP_PUTC_Q(pfile, ' ');
+ return CPP_HSPACE;
+ }
+
+ case '#':
+ 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') || (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;
+ 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 = (char *)pfile->token_buffer + before_name_written;
+ ident_len = CPP_PWRITTEN(pfile) - (unsigned char *)ident;
+ hp = cpp_lookup(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 =
+ (char *)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;
+ unsigned char *xbuf;
+
+ CPP_SET_WRITTEN(pfile, before_name_written);
+ special_symbol(hp, pfile);
+ xbuf_len = CPP_WRITTEN(pfile) - before_name_written;
+ xbuf = (unsigned char *)xmalloc(xbuf_len + 1);
+ CPP_SET_WRITTEN(pfile, before_name_written);
+ memcpy(xbuf, CPP_PWRITTEN(pfile), 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];
+
+ 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;
+ }
+ }
+}
+
+#if 0 /* Unused */
+/* Like cpp_get_token, but skip spaces and comments. */
+enum cpp_token
+cpp_get_non_space_token(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);
+ }
+}
+#endif
+
+/* Parse an identifier starting with C. */
+
+int
+parse_name(cpp_reader * pfile, int c)
+{
+ for (;;)
+ {
+ if (!is_idchar[c])
+ {
+ if (c == '\\' && PEEKC() == '\n')
+ {
+ FORWARD(2);
+ continue;
+ }
+ FORWARD(-1);
+ break;
+ }
+ 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(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(cpp_reader * pfile, char *filename, 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 (!memcmp
+ ((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(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);
+ memcpy((char *)&i->inode, (char *)&sb.st_ino, 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;
+};
+
+#if USE_FILE_NAME_MAPS
+
+#define FILE_NAME_MAP_FILE "header.gcc"
+
+/* Read a space delimited string of unlimited length from a stdio
+ * file. */
+
+static char *
+read_filename_string(int ch, FILE * f)
+{
+ char *alloc, *set;
+ int len;
+
+ len = 20;
+ set = alloc = (char *)xmalloc(len + 1);
+ if (!is_space[ch])
+ {
+ *set++ = ch;
+ while ((ch = getc(f)) != EOF && !is_space[ch])
+ {
+ if (set - alloc == len)
+ {
+ len *= 2;
+ alloc = (char *)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(cpp_reader * pfile, const char *dirname)
+{
+ 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);
+#ifndef __EMX__
+ f = fopen(name, "r");
+#else
+ f = fopen(name, "rt");
+#endif
+ 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 = (char *)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(cpp_reader * pfile, char *filename,
+ file_name_list * searchptr)
+{
+ struct file_name_map *map;
+ const char *from;
+ const 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 = strrchr(filename, '/');
+ if (!p)
+ p = filename;
+ if (searchptr
+ && searchptr->fname
+ && strlen(searchptr->fname) == (unsigned)(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
+ {
+ char *s;
+
+ s = (char *)alloca(p - filename + 1);
+ memcpy(s, filename, p - filename);
+ s[p - filename] = '\0';
+ from = p + 1;
+ dir = s;
+ }
+ 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);
+}
+
+#else
+
+static int
+open_include_file(cpp_reader * pfile __UNUSED__, char *filename,
+ file_name_list * searchptr __UNUSED__)
+{
+ return open(filename, O_RDONLY, 0666);
+}
+
+#endif /* USE_FILE_NAME_MAPS */
+
+/* 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(cpp_reader * pfile, int f, const char *fname, int system_header_p,
+ file_name_list * dirptr)
+{
+ int st_mode;
+ long st_size;
+ long i;
+ int length;
+ cpp_buffer *fp; /* For input stack frame */
+
+ if (file_size_and_mode(f, &st_mode, &st_size) < 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;
+ fp->dir = dirptr;
+ fp->system_header_p = system_header_p;
+ fp->lineno = 1;
+ fp->colno = 1;
+ fp->cleanup = file_cleanup;
+
+ if (S_ISREG(st_mode))
+ {
+ fp->buf = (unsigned 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, (char *)fp->buf, st_size);
+ fp->rlimit = fp->buf + length;
+ if (length < 0)
+ goto nope;
+ }
+ else if (S_ISDIR(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 = (unsigned char *)xmalloc(bsize + 2);
+
+ for (;;)
+ {
+ i = safe_read(f, (char *)(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 = (unsigned char *)xrealloc(fp->buf, bsize + 2);
+ }
+ 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';
+ }
+ 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;
+
+ return 1;
+
+ nope:
+
+ cpp_perror_with_name(pfile, fname);
+ close(f);
+ free(fp->buf);
+ return 1;
+}
+
+int
+push_parse_file(cpp_reader * pfile, const 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. */
+ p = (char *)getenv("CPATH");
+ if (p && !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 (!opts->in_fname)
+ 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)
+ {
+ 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, (unsigned char *)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 && pend->cmd[0] == '-')
+ {
+ switch (pend->cmd[1])
+ {
+ case 'U':
+ if (opts->debug_output)
+ output_line_command(pfile, 0, same_file);
+ do_undef(pfile, NULL, (unsigned char *)pend->arg,
+ (unsigned char *)pend->arg + strlen(pend->arg));
+ break;
+ case 'D':
+ if (opts->debug_output)
+ output_line_command(pfile, 0, same_file);
+ cpp_define(pfile, (unsigned char *)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:
+ epath = getenv("C_INCLUDE_PATH");
+ break;
+ case 1:
+ epath = getenv("CPLUS_INCLUDE_PATH");
+ break;
+ case 2:
+ epath = getenv("OBJC_INCLUDE_PATH");
+ break;
+ case 3:
+ epath = getenv("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].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. */
+ memcpy((char *)&include_defaults[num_dirs],
+ (char *)include_defaults_array,
+ 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 *di = 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 && default_len != 0)
+ for (di = include_defaults; di->fname; di++)
+ {
+ /* Some standard dirs are only for C++. */
+ if (!di->cplusplus
+ || (opts->cplusplus
+ && !opts->no_standard_cplusplus_includes))
+ {
+ /* Does this dir start with the prefix? */
+ if (!strncmp(di->fname, default_prefix, default_len))
+ {
+ /* Yes; change prefix and add to search list. */
+ file_name_list *new_
+ =
+ (file_name_list *) xmalloc(sizeof(file_name_list));
+ int this_len =
+ strlen(specd_prefix) + strlen(di->fname) -
+ default_len;
+ char *str =
+ (char *)xmalloc(this_len + 1);
+
+ strcpy(str, specd_prefix);
+ strcat(str, di->fname + default_len);
+ new_->fname = str;
+ new_->control_macro = 0;
+ new_->c_system_include_path = !di->cxx_aware;
+ new_->got_name_map = 0;
+ append_include_chain(pfile, new_, new_);
+ if (!opts->first_system_include)
+ opts->first_system_include = new_;
+ }
+ }
+ }
+ /* Search ordinary names for GNU include directories. */
+ for (di = include_defaults; di->fname; di++)
+ {
+ /* Some standard dirs are only for C++. */
+ if (!di->cplusplus
+ || (opts->cplusplus && !opts->no_standard_cplusplus_includes))
+ {
+ file_name_list *new_
+ = (file_name_list *) xmalloc(sizeof(file_name_list));
+
+ new_->control_macro = 0;
+ new_->c_system_include_path = !di->cxx_aware;
+ new_->fname = (char *)di->fname;
+ new_->got_name_map = 0;
+ append_include_chain(pfile, new_, new_);
+ if (!opts->first_system_include)
+ 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)
+ opts->first_system_include = opts->after_include;
+
+ /* With -v, print the list of dirs to search. */
+ if (opts->verbose)
+ {
+ file_name_list *fl;
+
+ fprintf(stderr, "#include \"...\" search starts here:\n");
+ for (fl = opts->include; fl; fl = fl->next)
+ {
+ if (fl == opts->first_bracket_include)
+ fprintf(stderr, "#include <...> search starts here:\n");
+ fprintf(stderr, " %s\n", fl->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 && strcmp(pend->cmd, "-imacros") == 0)
+ {
+ int fd = open(pend->arg, O_RDONLY, 0666);
+
+ if (fd < 0)
+ {
+ cpp_perror_with_name(pfile, pend->arg);
+ return FATAL_EXIT_CODE;
+ }
+ cpp_push_buffer(pfile, NULL, 0);
+ finclude(pfile, fd, pend->arg, 0, NULL);
+ 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 || *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("-MG must be specified with one of -M or -MM");
+
+ /* 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)
+ {
+ 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);
+ memcpy(output_file, spec, 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 *q;
+ int len;
+
+ /* Discard all directory prefixes from filename. */
+ if ((q = (char *)strrchr(opts->in_fname, '/'))
+#ifdef DIR_SEPARATOR
+ && (q = strrchr(opts->in_fname, DIR_SEPARATOR))
+#endif
+ )
+ ++q;
+ else
+ q = (char *)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;
+ if (len >= 2 && p[len - 2] == '.' && strchr("cCsSm", p[len - 1]))
+ q = p + (len - 2);
+ else if (len >= 3
+ && p[len - 3] == '.'
+ && p[len - 2] == 'c' && p[len - 1] == 'c')
+ q = p + (len - 3);
+ else if (len >= 4
+ && p[len - 4] == '.'
+ && p[len - 3] == 'c'
+ && p[len - 2] == 'x' && p[len - 1] == 'x')
+ q = p + (len - 4);
+ else if (len >= 4
+ && p[len - 4] == '.'
+ && p[len - 3] == 'c'
+ && p[len - 2] == 'p' && p[len - 1] == 'p')
+ q = p + (len - 4);
+
+ /* Supply our own suffix. */
+ strcpy(q, ".o");
+
+ deps_output(pfile, p, ':');
+ deps_output(pfile, opts->in_fname, ' ');
+ }
+ }
+
+ /* 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 && strcmp(pend->cmd, "-include") == 0)
+ {
+ int fd = open(pend->arg, O_RDONLY, 0666);
+
+ if (fd < 0)
+ {
+ cpp_perror_with_name(pfile, pend->arg);
+ return FATAL_EXIT_CODE;
+ }
+ cpp_push_buffer(pfile, NULL, 0);
+ finclude(pfile, fd, pend->arg, 0, NULL);
+ }
+ }
+ 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 (finclude(pfile, f, fname, 0, NULL))
+ output_line_command(pfile, 0, same_file);
+ return SUCCESS_EXIT_CODE;
+}
+
+void
+init_parse_file(cpp_reader * pfile)
+{
+ memset((char *)pfile, 0, sizeof(cpp_reader));
+ pfile->get_token = cpp_get_token;
+
+ pfile->token_buffer_size = 200;
+ pfile->token_buffer = (unsigned 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(struct cpp_pending *list)
+{
+ 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(cpp_reader * pfile, const char *cmd, const 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;
+}
+
+/* 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 handled arguments. */
+
+int
+cpp_handle_options(cpp_reader * pfile, int argc, char **argv)
+{
+ int i;
+ struct cpp_options *opts = CPP_OPTIONS(pfile);
+
+ for (i = 0; i < argc; i++)
+ {
+ if (argv[i][0] != '-')
+ {
+ if (opts->out_fname)
+ cpp_fatal("Usage: %s [switches] input output", argv[0]);
+ else if (opts->in_fname)
+ opts->out_fname = argv[i];
+ else
+ opts->in_fname = argv[i];
+ }
+ else
+ {
+ switch (argv[i][1])
+ {
+
+ case 'i':
+ if (!strcmp(argv[i], "-include")
+ || !strcmp(argv[i], "-imacros"))
+ {
+ if (i + 1 == argc)
+ cpp_fatal("Filename missing after `%s' option",
+ argv[i]);
+ else
+ push_pending(pfile, argv[i], argv[i + 1]), i++;
+ }
+ if (!strcmp(argv[i], "-iprefix"))
+ {
+ if (i + 1 == argc)
+ cpp_fatal("Filename missing after `-iprefix' option");
+ else
+ opts->include_prefix = argv[++i];
+ }
+ if (!strcmp(argv[i], "-ifoutput"))
+ {
+ opts->output_conditionals = 1;
+ }
+ if (!strcmp(argv[i], "-isystem"))
+ {
+ file_name_list *dirtmp;
+
+ if (i + 1 == argc)
+ cpp_fatal("Filename missing after `-isystem' option");
+
+ dirtmp =
+ (file_name_list *) xmalloc(sizeof(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)
+ 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"))
+ {
+ file_name_list *dirtmp;
+ char *prefix;
+
+ if (opts->include_prefix)
+ 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 =
+ (file_name_list *) xmalloc(sizeof(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)
+ cpp_fatal
+ ("Directory name missing after `-iwithprefix' option");
+
+ 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)
+ 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"))
+ {
+ file_name_list *dirtmp;
+ char *prefix;
+
+ if (opts->include_prefix)
+ 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 =
+ (file_name_list *) xmalloc(sizeof(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)
+ cpp_fatal
+ ("Directory name missing after `-iwithprefixbefore' option");
+
+ 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"))
+ {
+ file_name_list *dirtmp;
+
+ dirtmp =
+ (file_name_list *) xmalloc(sizeof(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)
+ cpp_fatal
+ ("Directory name missing after `-idirafter' option");
+ else
+ dirtmp->fname = argv[++i];
+ dirtmp->got_name_map = 0;
+
+ if (!opts->after_include)
+ 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)
+ cpp_fatal("Output filename specified twice");
+ if (i + 1 == argc)
+ cpp_fatal("Filename missing after -o option");
+ 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;
+ }
+ break;
+
+ case 't':
+ if (!strcmp(argv[i], "-traditional"))
+ {
+ opts->traditional = 1;
+ if (opts->dollars_in_ident > 0)
+ opts->dollars_in_ident = 1;
+ }
+ 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 =
+ 0, opts->objc = 0;
+ if (!strcmp(argv[i], "-lang-c++"))
+ opts->cplusplus = 1, opts->cplusplus_comments =
+ 1, opts->objc = 0;
+ if (!strcmp(argv[i], "-lang-c-c++-comments"))
+ opts->cplusplus = 0, opts->cplusplus_comments =
+ 1, opts->objc = 0;
+ if (!strcmp(argv[i], "-lang-objc"))
+ opts->objc = 1, opts->cplusplus =
+ 0, opts->cplusplus_comments = 1;
+ if (!strcmp(argv[i], "-lang-objc++"))
+ opts->objc = 1, opts->cplusplus =
+ 1, opts->cplusplus_comments = 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], "-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)
+ cpp_fatal("Filename missing after %s option",
+ argv[i]);
+ 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;
+ }
+ }
+ }
+ break;
+
+ case 'g':
+ if (argv[i][2] == '3')
+ opts->debug_output = 1;
+ 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("Macro name missing after -D option");
+ else
+ i++, push_pending(pfile, "-D", argv[i]);
+ break;
+
+ case 'A':
+ {
+ char *p = NULL;
+
+ if (argv[i][2] != 0)
+ p = argv[i] + 2;
+ else if (i + 1 == argc)
+ cpp_fatal("Assertion missing after -A option");
+ 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;)
+ {
+ 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("Macro name missing after -U option");
+ 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. */
+ {
+ 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 =
+ (file_name_list *) xmalloc(sizeof(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)
+ cpp_fatal
+ ("Directory name missing after -I option");
+ 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;
+ 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)
+ {
+ opts->in_fname = "";
+ break;
+ }
+ else if (!opts->out_fname)
+ {
+ opts->out_fname = "";
+ break;
+ } /* else fall through into error */
+ default:
+ return i;
+ }
+ }
+ }
+ return i;
+}
+
+void
+cpp_finish(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)
+ {
+ const char *deps_mode =
+ opts->print_deps_append ? "a" : "w";
+
+ if (!opts->deps_file)
+ deps_stream = stdout;
+ else if (!(deps_stream = fopen(opts->deps_file, deps_mode)))
+ 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("I/O error on output");
+ }
+ }
+ }
+}
+
+static int
+do_assert(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf __UNUSED__, unsigned char *limit __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)
+ {
+ 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;
+ const char *symname = (char *)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)
+ {
+ 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
+ unsigned char *buf __UNUSED__, unsigned char *limit __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)
+ {
+ 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;
+ const char *symname = (char *)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)
+ 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. */
+
+static int
+check_assertion(cpp_reader * pfile, const 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)
+ /* 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(struct arglist *l1, struct arglist *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(struct arglist *tokens)
+{
+ struct arglist *prev = 0, *cur, *next;
+
+ for (cur = tokens; cur; cur = next)
+ {
+ next = cur->next;
+ cur->next = prev;
+ prev = cur;
+ }
+ 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(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 = (char *)(temp + 1);
+ memcpy(temp->name, (char *)(pfile->token_buffer + name_written),
+ 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(struct arglist *tokens)
+{
+ while (tokens)
+ {
+ struct arglist *next = tokens->next;
+
+ free(tokens->name);
+ free(tokens);
+ tokens = next;
+ }
+}
+
+/* Get the file-mode and data size of the file open on FD
+ * and store them in *MODE_POINTER and *SIZE_POINTER. */
+
+static int
+file_size_and_mode(int fd, int *mode_pointer, long int *size_pointer)
+{
+ struct stat sbuf;
+
+ if (fstat(fd, &sbuf) < 0)
+ return (-1);
+ if (mode_pointer)
+ *mode_pointer = sbuf.st_mode;
+ if (size_pointer)
+ *size_pointer = sbuf.st_size;
+ return 0;
+}
+
+/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
+ * retrying if necessary. 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(int desc, char *ptr, int len)
+{
+ int left = len;
+
+ while (left > 0)
+ {
+ int nchars = read(desc, ptr, left);
+
+ 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 *
+savestring(const char *input)
+{
+ unsigned size = strlen(input);
+ char *output = (char *)xmalloc(size + 1);
+
+ strcpy(output, input);
+ return output;
+}
+
+/* Initialize PMARK to remember the current position of PFILE. */
+void
+parse_set_mark(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. */
+static void
+parse_clear_mark(struct parse_marker *pmark)
+{
+ struct parse_marker **pp = &pmark->buf->marks;
+
+ for (;; pp = &(*pp)->next)
+ {
+ if (!*pp)
+ cpp_fatal("internal error", "in parse_set_mark");
+ if (*pp == pmark)
+ break;
+ }
+ *pp = pmark->next;
+}
+
+/* Backup the current position of PFILE to that saved in PMARK. */
+
+static void
+parse_goto_mark(struct parse_marker *pmark, cpp_reader * pfile)
+{
+ cpp_buffer *pbuf = CPP_BUFFER(pfile);
+
+ if (pbuf != pmark->buf)
+ cpp_fatal("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. */
+
+static void
+parse_move_mark(struct parse_marker *pmark, cpp_reader * pfile)
+{
+ cpp_buffer *pbuf = CPP_BUFFER(pfile);
+
+ if (pbuf != pmark->buf)
+ cpp_fatal("internal error %s", "parse_move_mark");
+ pmark->position = pbuf->cur - pbuf->buf;
+}
+
+int
+cpp_read_check_assertion(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,
+ (char *)pfile->token_buffer + name_start,
+ name_length, 1, token_ptrs);
+ }
+ else
+ result = check_assertion(pfile,
+ (char *)pfile->token_buffer + name_start,
+ name_length, 0, NULL);
+ CPP_ADJUST_WRITTEN(pfile, -name_length); /* pop */
+ return result;
+}
+
+static void
+cpp_print_file_and_line(cpp_reader * pfile)
+{
+ cpp_buffer *ip = cpp_file_buffer(pfile);
+
+ if (ip)
+ {
+ 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
+cpp_error_v(cpp_reader * pfile, const char *msg, va_list args)
+{
+ cpp_print_containing_files(pfile);
+ cpp_print_file_and_line(pfile);
+ cpp_message_v(pfile, 1, msg, args);
+}
+
+void
+cpp_error(cpp_reader * pfile, const char *msg, ...)
+{
+ va_list args;
+
+ va_start(args, msg);
+
+ cpp_error_v(pfile, msg, args);
+
+ va_end(args);
+}
+
+/* Print error message but don't count it. */
+
+static void
+cpp_warning_v(cpp_reader * pfile, const char *msg, va_list args)
+{
+ 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);
+ cpp_message_v(pfile, 0, msg, args);
+}
+
+void
+cpp_warning(cpp_reader * pfile, const char *msg, ...)
+{
+ va_list args;
+
+ va_start(args, msg);
+
+ cpp_warning_v(pfile, msg, args);
+
+ va_end(args);
+}
+
+/* Print an error message and maybe count it. */
+
+void
+cpp_pedwarn(cpp_reader * pfile, const char *msg, ...)
+{
+ va_list args;
+
+ va_start(args, msg);
+
+ if (CPP_OPTIONS(pfile)->pedantic_errors)
+ cpp_error_v(pfile, msg, args);
+ else
+ cpp_warning_v(pfile, msg, args);
+
+ va_end(args);
+}
+
+static void
+cpp_error_with_line(cpp_reader * pfile, int line, int column, const char *msg)
+{
+ cpp_buffer *ip = cpp_file_buffer(pfile);
+
+ cpp_print_containing_files(pfile);
+
+ if (ip)
+ cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
+
+ cpp_message(pfile, 1, msg, NULL, NULL, NULL);
+}
+
+static void
+cpp_warning_with_line(cpp_reader * pfile, int line, int column, const char *msg)
+{
+ 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)
+ cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
+
+ cpp_message(pfile, 0, msg, NULL, NULL, NULL);
+}
+
+static void
+cpp_pedwarn_with_line(cpp_reader * pfile, int line, int column, const char *msg)
+{
+ if (CPP_OPTIONS(pfile)->pedantic_errors)
+ cpp_error_with_line(pfile, column, line, msg);
+ else
+ cpp_warning_with_line(pfile, line, column, msg);
+}
+
+/* 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(cpp_reader * pfile,
+ const char *file, int line,
+ const char *msg, const char *arg1,
+ const char *arg2, const char *arg3)
+{
+ if (!CPP_OPTIONS(pfile)->pedantic_errors
+ && CPP_OPTIONS(pfile)->inhibit_warnings)
+ return;
+ if (file)
+ cpp_file_line_for_message(pfile, file, line, -1);
+ cpp_message(pfile, CPP_OPTIONS(pfile)->pedantic_errors,
+ msg, arg1, arg2, arg3);
+}
+
+/* This defines "errno" properly for VMS, and gives us EACCES. */
+#include <errno.h>
+#ifndef errno
+extern int errno;
+
+#endif
+
+#ifndef HAVE_STRERROR
+extern int sys_nerr;
+
+#if defined(bsd4_4)
+extern const char *const sys_errlist[];
+
+#else
+extern char *sys_errlist[];
+
+#endif
+#endif /* HAVE_STRERROR */
+
+/*
+ * my_strerror - return the descriptive text associated with an `errno' code.
+ */
+
+static const char *
+my_strerror(int errnum)
+{
+ const char *result;
+
+#ifndef HAVE_STRERROR
+ result = ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
+#else
+ result = strerror(errnum);
+#endif
+
+ if (!result)
+ result = "undocumented I/O error";
+
+ return result;
+}
+
+/* Error including a message from `errno'. */
+
+static void
+cpp_error_from_errno(cpp_reader * pfile, const char *name)
+{
+ cpp_buffer *ip = cpp_file_buffer(pfile);
+
+ cpp_print_containing_files(pfile);
+
+ if (ip)
+ cpp_file_line_for_message(pfile, ip->nominal_fname, ip->lineno, -1);
+
+ cpp_message(pfile, 1, "%s: %s", name, my_strerror(errno), NULL);
+}
+
+void
+cpp_perror_with_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.
+ */
projects / framework / uifw / edje.git / commitdiff