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/* Command line option handling.

   Copyright (C) 2002, 2003, 2004, 2005, 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_OPTS_H

#define GCC_OPTS_H

/* Specifies how a switch's VAR_VALUE relates to its FLAG_VAR.  */

enum cl_var_type {

  /* The switch is enabled when FLAG_VAR is nonzero.  */

  CLVC_BOOLEAN,

  /* The switch is enabled when FLAG_VAR == VAR_VALUE.  */

  CLVC_EQUAL,

  /* The switch is enabled when VAR_VALUE is not set in FLAG_VAR.  */

  CLVC_BIT_CLEAR,

  /* The switch is enabled when VAR_VALUE is set in FLAG_VAR.  */

  CLVC_BIT_SET,

  /* The switch takes a string argument and FLAG_VAR points to that

     argument.  */

  CLVC_STRING

};

struct cl_option

{

  const char *opt_text;

  const char *help;

  unsigned short back_chain;

  unsigned char opt_len;

  int neg_index;

  unsigned int flags;

  void *flag_var;

  enum cl_var_type var_type;

  int var_value;

};

/* Records that the state of an option consists of SIZE bytes starting

   at DATA.  DATA might point to CH in some cases.  */

struct cl_option_state {

  const void *data;

  size_t size;

  char ch;

};

extern const struct cl_option cl_options[];

extern const unsigned int cl_options_count;

extern const char *const lang_names[];

extern const unsigned int cl_lang_count;

#define CL_PARAMS               (1 << 17) /* Fake entry.  Used to display --param info with --help.  */

#define CL_WARNING              (1 << 18) /* Enables an (optional) warning message.  */

#define CL_OPTIMIZATION         (1 << 19) /* Enables an (optional) optimization.  */

#define CL_TARGET               (1 << 20) /* Target-specific option.  */

#define CL_COMMON               (1 << 21) /* Language-independent.  */

#define CL_MIN_OPTION_CLASS     CL_PARAMS

#define CL_MAX_OPTION_CLASS     CL_COMMON

/* From here on the bits describe attributes of the options.

   Before this point the bits have described the class of the option.

   This distinction is important because --help will not list options

   which only have these higher bits set.  */

#define CL_SAVE                 (1 << 22) /* Target-specific option for attribute.  */

#define CL_DISABLED             (1 << 23) /* Disabled in this configuration.  */

#define CL_REPORT               (1 << 24) /* Report argument with -fverbose-asm  */

#define CL_JOINED               (1 << 25) /* If takes joined argument.  */

#define CL_SEPARATE             (1 << 26) /* If takes a separate argument.  */

#define CL_REJECT_NEGATIVE      (1 << 27) /* Reject no- form.  */

#define CL_MISSING_OK           (1 << 28) /* Missing argument OK (joined).  */

#define CL_UINTEGER             (1 << 29) /* Argument is an integer >=0.  */

#define CL_UNDOCUMENTED         (1 << 30) /* Do not output with --help.  */

/* Input file names.  */

extern const char **in_fnames;

/* The count of input filenames.  */

extern unsigned num_in_fnames;

size_t find_opt (const char *input, int lang_mask);

extern void prune_options (int *argcp, char ***argvp);

extern void decode_options (unsigned int argc, const char **argv);

extern int option_enabled (int opt_idx);

extern bool get_option_state (int, struct cl_option_state *);

extern void set_option (const struct cl_option *, int, const char *);

extern void enable_warning_as_error (const char *arg, int value,

                                     unsigned int lang_mask);

extern void print_ignored_options (void);

#endif