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cpphash.h  view on Meta::CPAN

  const cpp_token *prev;	/* Previous token.  */
  const cpp_token *source;	/* Source token for spacing.  */
  unsigned int line;		/* Line currently being written.  */
  unsigned char printed;	/* Nonzero if something output at line.  */
};

/* Represents the contents of a file cpplib has read in.  */
struct cpp_buffer
{
  const unsigned char *cur;	 /* current position */
  const unsigned char *backup_to; /* if peeked character is not wanted */
  const unsigned char *rlimit; /* end of valid data */
  const unsigned char *line_base; /* start of current line */

  struct cpp_buffer *prev;

  const unsigned char *buf;	 /* Entire character buffer.  */

  /* Pointer into the include table; non-NULL if this is a file
     buffer.  Used for include_next and to record control macros.  */
  struct include_file *inc;

  /* Value of if_stack at start of this file.
     Used to prohibit unmatched #endif (etc) in an include file.  */
  struct if_stack *if_stack;

  /* Token column position adjustment owing to tabs in whitespace.  */
  unsigned int col_adjust;

  /* Contains PREV_WHITE and/or AVOID_LPASTE.  */
  unsigned char saved_flags;

  /* Because of the way the lexer works, -Wtrigraphs can sometimes
     warn twice for the same trigraph.  This helps prevent that.  */
  const unsigned char *last_Wtrigraphs;

  /* True if we have already warned about C++ comments in this file.
     The warning happens only for C89 extended mode with -pedantic on,
     or for -Wtraditional, and only once per file (otherwise it would
     be far too noisy).  */
  unsigned char warned_cplusplus_comments;

  /* True if we don't process trigraphs and escaped newlines.  True
     for preprocessed input, command line directives, and _Pragma
     buffers.  */
  unsigned char from_stage3;

  /* Nonzero means that the directory to start searching for ""
     include files has been calculated and stored in "dir" below.  */
  unsigned char search_cached;

  /* At EOF, a buffer is automatically popped.  If RETURN_AT_EOF is
     true, a CPP_EOF token is then returned.  Otherwise, the next
     token from the enclosing buffer is returned.  */
  bool return_at_eof;

  /* The directory of the this buffer's file.  Its NAME member is not
     allocated, so we don't need to worry about freeing it.  */
  struct search_path dir;

  /* Used for buffer overlays by cpptrad.c.  */
  const uchar *saved_cur, *saved_rlimit;
};

/* A cpp_reader encapsulates the "state" of a pre-processor run.
   Applying cpp_get_token repeatedly yields a stream of pre-processor
   tokens.  Usually, there is only one cpp_reader object active.  */
struct cpp_reader
{
  /* Top of buffer stack.  */
  cpp_buffer *buffer;

  /* Overlaid buffer (can be different after processing #include).  */
  cpp_buffer *overlaid_buffer;

  /* Lexer state.  */
  struct lexer_state state;

  /* Source line tracking.  */
  struct line_maps line_maps;
  const struct line_map *map;
  unsigned int line;

  /* The line of the '#' of the current directive.  */
  unsigned int directive_line;

  /* Memory buffers.  */
  _cpp_buff *a_buff;		/* Aligned permanent storage.  */
  _cpp_buff *u_buff;		/* Unaligned permanent storage.  */
  _cpp_buff *free_buffs;	/* Free buffer chain.  */

  /* Context stack.  */
  struct cpp_context base_context;
  struct cpp_context *context;

  /* If in_directive, the directive if known.  */
  const struct directive *directive;

  /* The next -include-d file; NULL if they all are done.  If it
     points to NULL, the last one is in progress, and
     _cpp_maybe_push_include_file has yet to restore the line map.  */
  struct pending_option **next_include_file;

  /* Multiple inlcude optimisation.  */
  const cpp_hashnode *mi_cmacro;
  const cpp_hashnode *mi_ind_cmacro;
  bool mi_valid;

  /* Lexing.  */
  cpp_token *cur_token;
  tokenrun base_run, *cur_run;
  unsigned int lookaheads;

  /* Nonzero prevents the lexer from re-using the token runs.  */
  unsigned int keep_tokens;

  /* Error counter for exit code.  */
  unsigned int errors;

  /* Buffer to hold macro definition string.  */
  unsigned char *macro_buffer;

cpphash.h  view on Meta::CPAN

extern void _cpp_push_text_context	PARAMS ((cpp_reader *, cpp_hashnode *,
						 const uchar *, size_t));
extern bool _cpp_save_parameter		PARAMS ((cpp_reader *, cpp_macro *,
						 cpp_hashnode *));
extern bool _cpp_arguments_ok		PARAMS ((cpp_reader *, cpp_macro *,
						 const cpp_hashnode *,
						 unsigned int));
extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *,
						     cpp_hashnode *));
int _cpp_warn_if_unused_macro		PARAMS ((cpp_reader *, cpp_hashnode *,
						 void *));
/* In cpphash.c */
extern void _cpp_init_hashtable		PARAMS ((cpp_reader *, hash_table *));
extern void _cpp_destroy_hashtable	PARAMS ((cpp_reader *));

/* In cppfiles.c */
extern void _cpp_fake_include		PARAMS ((cpp_reader *, const char *));
extern void _cpp_never_reread		PARAMS ((struct include_file *));
extern char *_cpp_simplify_pathname	PARAMS ((char *));
extern bool _cpp_read_file		PARAMS ((cpp_reader *, const char *));
extern bool _cpp_execute_include	PARAMS ((cpp_reader *,
						 const cpp_token *,
						 enum include_type));
extern int _cpp_compare_file_date       PARAMS ((cpp_reader *,
						 const cpp_token *));
extern void _cpp_report_missing_guards	PARAMS ((cpp_reader *));
extern void _cpp_init_includes		PARAMS ((cpp_reader *));
extern void _cpp_cleanup_includes	PARAMS ((cpp_reader *));
extern void _cpp_pop_file_buffer	PARAMS ((cpp_reader *,
						 struct include_file *));

/* In cppexp.c */
extern bool _cpp_parse_expr		PARAMS ((cpp_reader *));
extern struct op *_cpp_expand_op_stack	PARAMS ((cpp_reader *));

/* In cpplex.c */
extern cpp_token *_cpp_temp_token	PARAMS ((cpp_reader *));
extern const cpp_token *_cpp_lex_token	PARAMS ((cpp_reader *));
extern cpp_token *_cpp_lex_direct	PARAMS ((cpp_reader *));
extern int _cpp_equiv_tokens		PARAMS ((const cpp_token *,
						 const cpp_token *));
extern void _cpp_init_tokenrun		PARAMS ((tokenrun *, unsigned int));

/* In cppinit.c.  */
extern void _cpp_maybe_push_include_file PARAMS ((cpp_reader *));

/* In cpplib.c */
extern int _cpp_test_assertion PARAMS ((cpp_reader *, unsigned int *));
extern int _cpp_handle_directive PARAMS ((cpp_reader *, int));
extern void _cpp_define_builtin	PARAMS ((cpp_reader *, const char *));
extern void _cpp_do__Pragma	PARAMS ((cpp_reader *));
extern void _cpp_init_directives PARAMS ((cpp_reader *));
extern void _cpp_init_internal_pragmas PARAMS ((cpp_reader *));
extern void _cpp_do_file_change PARAMS ((cpp_reader *, enum lc_reason,
					 const char *,
					 unsigned int, unsigned int));
extern void _cpp_pop_buffer PARAMS ((cpp_reader *));

/* In cpptrad.c.  */
extern bool _cpp_read_logical_line_trad PARAMS ((cpp_reader *));
extern void _cpp_overlay_buffer PARAMS ((cpp_reader *pfile, const uchar *,
					 size_t));
extern void _cpp_remove_overlay PARAMS ((cpp_reader *));
extern bool _cpp_create_trad_definition PARAMS ((cpp_reader *, cpp_macro *));
extern bool _cpp_expansions_different_trad PARAMS ((const cpp_macro *,
						    const cpp_macro *));
extern uchar *_cpp_copy_replacement_text PARAMS ((const cpp_macro *, uchar *));
extern size_t _cpp_replacement_text_len PARAMS ((const cpp_macro *));

/* Utility routines and macros.  */
#define DSC(str) (const uchar *)str, sizeof str - 1
#define xnew(T)		(T *) xmalloc (sizeof(T))
#define xcnew(T)	(T *) xcalloc (1, sizeof(T))
#define xnewvec(T, N)	(T *) xmalloc (sizeof(T) * (N))
#define xcnewvec(T, N)	(T *) xcalloc (N, sizeof(T))
#define xobnew(O, T)	(T *) obstack_alloc (O, sizeof(T))

/* These are inline functions instead of macros so we can get type
   checking.  */
static inline int ustrcmp	PARAMS ((const uchar *, const uchar *));
static inline int ustrncmp	PARAMS ((const uchar *, const uchar *,
					 size_t));
static inline size_t ustrlen	PARAMS ((const uchar *));
static inline uchar *uxstrdup	PARAMS ((const uchar *));
static inline uchar *ustrchr	PARAMS ((const uchar *, int));
static inline int ufputs	PARAMS ((const uchar *, FILE *));

static inline int
ustrcmp (s1, s2)
     const uchar *s1, *s2;
{
  return strcmp ((const char *)s1, (const char *)s2);
}

static inline int
ustrncmp (s1, s2, n)
     const uchar *s1, *s2;
     size_t n;
{
  return strncmp ((const char *)s1, (const char *)s2, n);
}

static inline size_t
ustrlen (s1)
     const uchar *s1;
{
  return strlen ((const char *)s1);
}

static inline uchar *
uxstrdup (s1)
     const uchar *s1;
{
  return (uchar *) xstrdup ((const char *)s1);
}

static inline uchar *
ustrchr (s1, c)
     const uchar *s1;
     int c;
{
  return (uchar *) strchr ((const char *)s1, c);
}