gcc/gengtype.h

   1 /* Process source files and output type information.
   2    Copyright (C) 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_GENGTYPE_H
  21 #define GCC_GENGTYPE_H
  22
  23 /* A file position, mostly for error messages.
  24    The FILE element may be compared using pointer equality.  */
  25 struct fileloc {
  26   const char *file;
  27   int line;
  28 };
  29
  30 /* Data types handed around within, but opaque to, the lexer and parser.  */
  31 typedef struct pair *pair_p;
  32 typedef struct type *type_p;
  33 typedef const struct type *const_type_p;
  34 typedef struct options *options_p;
  35
  36 /* Variables used to communicate between the lexer and the parser.  */
  37 extern int lexer_toplevel_done;
  38 extern struct fileloc lexer_line;
  39
  40 /* Print an error message.  */
  41 extern void error_at_line
  42   (struct fileloc *pos, const char *msg, ...) ATTRIBUTE_PRINTF_2;
  43
  44 /* Like asprintf, but calls fatal() on out of memory.  */
  45 extern char *xasprintf(const char *, ...) ATTRIBUTE_PRINTF_1;
  46
  47 /* Constructor routines for types.  */
  48 extern void do_typedef (const char *s, type_p t, struct fileloc *pos);
  49 extern void do_scalar_typedef (const char *s, struct fileloc *pos);
  50 extern type_p resolve_typedef (const char *s, struct fileloc *pos);
  51 extern type_p new_structure (const char *name, int isunion,
  52                              struct fileloc *pos, pair_p fields,
  53                              options_p o);
  54 extern type_p find_structure (const char *s, int isunion);
  55 extern type_p create_scalar_type (const char *name);
  56 extern type_p create_pointer (type_p t);
  57 extern type_p create_array (type_p t, const char *len);
  58 extern options_p create_option (options_p, const char *name, const void *info);
  59 extern options_p create_nested_ptr_option (options_p, type_p t,
  60                                            const char *from, const char *to);
  61 extern pair_p create_field_at (pair_p next, type_p type, const char *name,
  62                                options_p opt, struct fileloc *pos);
  63 extern pair_p nreverse_pairs (pair_p list);
  64 extern type_p adjust_field_type (type_p, options_p);
  65 extern void note_variable (const char *s, type_p t, options_p o,
  66                            struct fileloc *pos);
  67 extern void note_def_vec (const char *type_name, bool is_scalar,
  68                           struct fileloc *pos);
  69 extern void note_def_vec_alloc (const char *type, const char *astrat,
  70                                 struct fileloc *pos);
  71
  72 /* Lexer and parser routines.  */
  73 extern int yylex (const char **yylval);
  74 extern void yybegin (const char *fname);
  75 extern void yyend (void);
  76 extern void parse_file (const char *name);
  77 extern bool hit_error;
  78
  79 /* Token codes.  */
  80 enum {
  81   EOF_TOKEN = 0,
  82
  83   /* Per standard convention, codes in the range (0, UCHAR_MAX]
  84      represent single characters with those character codes.  */
  85
  86   CHAR_TOKEN_OFFSET = UCHAR_MAX + 1,
  87   GTY_TOKEN = CHAR_TOKEN_OFFSET,
  88   TYPEDEF,
  89   EXTERN,
  90   STATIC,
  91   UNION,
  92   STRUCT,
  93   ENUM,
  94   VEC_TOKEN,
  95   DEFVEC_OP,
  96   DEFVEC_I,
  97   DEFVEC_ALLOC,
  98   ELLIPSIS,
  99   PTR_ALIAS,
 100   NESTED_PTR,
 101   PARAM_IS,
 102   NUM,
 103   SCALAR,
 104   ID,
 105   STRING,
 106   CHAR,
 107   ARRAY,
 108
 109   /* print_token assumes that any token >= FIRST_TOKEN_WITH_VALUE may have
 110      a meaningful value to be printed.  */
 111   FIRST_TOKEN_WITH_VALUE = PARAM_IS
 112 };
 113 #endif