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/* Process source files and output type information.

   Copyright (C) 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.

This file is part of GCC.

GCC 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 3, or (at your option) any later

version.

GCC 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 GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#ifndef GCC_GENGTYPE_H

#define GCC_GENGTYPE_H

/* A file position, mostly for error messages.

   The FILE element may be compared using pointer equality.  */

struct fileloc {

  const char *file;

  int line;

};

/* Data types handed around within, but opaque to, the lexer and parser.  */

typedef struct pair *pair_p;

typedef struct type *type_p;

typedef const struct type *const_type_p;

typedef struct options *options_p;

/* Variables used to communicate between the lexer and the parser.  */

extern int lexer_toplevel_done;

extern struct fileloc lexer_line;

/* Print an error message.  */

extern void error_at_line

  (struct fileloc *pos, const char *msg, ...) ATTRIBUTE_PRINTF_2;

/* Like asprintf, but calls fatal() on out of memory.  */

extern char *xasprintf(const char *, ...) ATTRIBUTE_PRINTF_1;

/* Constructor routines for types.  */

extern void do_typedef (const char *s, type_p t, struct fileloc *pos);

extern void do_scalar_typedef (const char *s, struct fileloc *pos);

extern type_p resolve_typedef (const char *s, struct fileloc *pos);

extern type_p new_structure (const char *name, int isunion,

                             struct fileloc *pos, pair_p fields,

                             options_p o);

extern type_p find_structure (const char *s, int isunion);

extern type_p create_scalar_type (const char *name);

extern type_p create_pointer (type_p t);

extern type_p create_array (type_p t, const char *len);

extern options_p create_option (options_p, const char *name, const void *info);

extern options_p create_nested_ptr_option (options_p, type_p t,

                                           const char *from, const char *to);

extern pair_p create_field_at (pair_p next, type_p type, const char *name,

                               options_p opt, struct fileloc *pos);

extern pair_p nreverse_pairs (pair_p list);

extern type_p adjust_field_type (type_p, options_p);

extern void note_variable (const char *s, type_p t, options_p o,

                           struct fileloc *pos);

extern void note_def_vec (const char *type_name, bool is_scalar,

                          struct fileloc *pos);

extern void note_def_vec_alloc (const char *type, const char *astrat,

                                struct fileloc *pos);

/* Lexer and parser routines.  */

extern int yylex (const char **yylval);

extern void yybegin (const char *fname);

extern void yyend (void);

extern void parse_file (const char *name);

extern bool hit_error;

/* Token codes.  */

enum {

  EOF_TOKEN = 0,

  /* Per standard convention, codes in the range (0, UCHAR_MAX]

     represent single characters with those character codes.  */

  CHAR_TOKEN_OFFSET = UCHAR_MAX + 1,

  GTY_TOKEN = CHAR_TOKEN_OFFSET,

  TYPEDEF,

  EXTERN,

  STATIC,

  UNION,

  STRUCT,

  ENUM,

  VEC_TOKEN,

  DEFVEC_OP,

  DEFVEC_I,

  DEFVEC_ALLOC,

  ELLIPSIS,

  PTR_ALIAS,

  NESTED_PTR,

  PARAM_IS,

  NUM,

  SCALAR,

  ID,

  STRING,

  CHAR,

  ARRAY,

  /* print_token assumes that any token >= FIRST_TOKEN_WITH_VALUE may have

     a meaningful value to be printed.  */

  FIRST_TOKEN_WITH_VALUE = PARAM_IS

};

#endif