/* Output generating routines for GDB.

   Copyright (C) 1999-2016 Free Software Foundation, Inc.

   Contributed by Cygnus Solutions.
   Written by Fernando Nasser for Cygnus.

   This file is part of GDB.

   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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */

#ifndef UI_OUT_H
#define UI_OUT_H 1

/* The ui_out structure */

struct ui_out;
struct ui_file;

/* the current ui_out */

/* FIXME: This should not be a global but something passed down from main.c
   or top.c.  */
extern struct ui_out **current_ui_current_uiout_ptr (void);
#define current_uiout (*current_ui_current_uiout_ptr ())

/* alignment enum */
enum ui_align
  {
    ui_left = -1,
    ui_center,
    ui_right,
    ui_noalign
  };

/* flags enum */
enum ui_flags
  {
    ui_from_tty = 1,
    ui_source_list = 2
  };


/* Prototypes for ui-out API.  */

/* A result is a recursive data structure consisting of lists and
   tuples.  */

enum ui_out_type
  {
    ui_out_type_tuple,
    ui_out_type_list
  };

extern void ui_out_begin (struct ui_out *uiout,
			  enum ui_out_type level_type,
			  const char *id);

extern void ui_out_end (struct ui_out *uiout, enum ui_out_type type);

/* A table can be considered a special tuple/list combination with the
   implied structure: ``table = { hdr = { header, ... } , body = [ {
   field, ... }, ... ] }''.  If NR_ROWS is negative then there is at
   least one row.  */
extern void ui_out_table_header (struct ui_out *uiout, int width,
				 enum ui_align align, const char *col_name,
				 const char *colhdr);

extern void ui_out_table_body (struct ui_out *uiout);

extern struct cleanup *make_cleanup_ui_out_table_begin_end (struct ui_out *ui_out,
                                                            int nr_cols,
							    int nr_rows,
							    const char *tblid);
/* Compatibility wrappers.  */

extern struct cleanup *make_cleanup_ui_out_list_begin_end (struct ui_out *uiout,
							   const char *id);

extern struct cleanup *make_cleanup_ui_out_tuple_begin_end (struct ui_out *uiout,
							    const char *id);

extern void ui_out_field_int (struct ui_out *uiout, const char *fldname,
			      int value);

extern void ui_out_field_fmt_int (struct ui_out *uiout, int width,
				  enum ui_align align, const char *fldname, 
		 		  int value);

/* Output a field containing an address.  */

extern void ui_out_field_core_addr (struct ui_out *uiout, const char *fldname,
				    struct gdbarch *gdbarch, CORE_ADDR address);

extern void ui_out_field_string (struct ui_out * uiout, const char *fldname,
				 const char *string);

extern void ui_out_field_stream (struct ui_out *uiout, const char *fldname,
				 struct ui_file *stream);

extern void ui_out_field_fmt (struct ui_out *uiout, const char *fldname,
			      const char *format, ...)
     ATTRIBUTE_PRINTF (3, 4);

extern void ui_out_field_skip (struct ui_out *uiout, const char *fldname);

extern void ui_out_spaces (struct ui_out *uiout, int numspaces);

extern void ui_out_text (struct ui_out *uiout, const char *string);

extern void ui_out_message (struct ui_out *uiout, const char *format, ...)
     ATTRIBUTE_PRINTF (2, 3);

extern void ui_out_wrap_hint (struct ui_out *uiout, const char *identstring);

extern void ui_out_flush (struct ui_out *uiout);

extern int ui_out_test_flags (struct ui_out *uiout, int mask);

extern int ui_out_query_field (struct ui_out *uiout, int colno,
			       int *width, int *alignment, char **col_name);

/* HACK: Code in GDB is currently checking to see the type of ui_out
   builder when determining which output to produce.  This function is
   a hack to encapsulate that test.  Once GDB manages to separate the
   CLI/MI from the core of GDB the problem should just go away ....  */

extern int ui_out_is_mi_like_p (struct ui_out *uiout);

/* From here on we have things that are only needed by implementation
   routines and main.c.   We should pehaps have a separate file for that,
   like a  ui-out-impl.h  file.  */

/* User Interface Output Implementation Function Table */

/* Type definition of all implementation functions.  */

typedef void (table_begin_ftype) (struct ui_out * uiout,
				  int nbrofcols, int nr_rows,
				  const char *tblid);
typedef void (table_body_ftype) (struct ui_out * uiout);
typedef void (table_end_ftype) (struct ui_out * uiout);
typedef void (table_header_ftype) (struct ui_out * uiout, int width,
				   enum ui_align align, const char *col_name,
				   const char *colhdr);
/* Note: level 0 is the top-level so LEVEL is always greater than
   zero.  */
typedef void (ui_out_begin_ftype) (struct ui_out *uiout,
				   enum ui_out_type type,
				   int level, const char *id);
typedef void (ui_out_end_ftype) (struct ui_out *uiout,
				 enum ui_out_type type,
				 int level);
typedef void (field_int_ftype) (struct ui_out * uiout, int fldno, int width,
				enum ui_align align,
				const char *fldname, int value);
typedef void (field_skip_ftype) (struct ui_out * uiout, int fldno, int width,
				 enum ui_align align,
				 const char *fldname);
typedef void (field_string_ftype) (struct ui_out * uiout, int fldno, int width,
				   enum ui_align align,
				   const char *fldname,
				   const char *string);
typedef void (field_fmt_ftype) (struct ui_out * uiout, int fldno, int width,
				enum ui_align align,
				const char *fldname,
				const char *format,
				va_list args) ATTRIBUTE_FPTR_PRINTF(6,0);
typedef void (spaces_ftype) (struct ui_out * uiout, int numspaces);
typedef void (text_ftype) (struct ui_out * uiout,
			   const char *string);
typedef void (message_ftype) (struct ui_out * uiout,
			      const char *format, va_list args)
     ATTRIBUTE_FPTR_PRINTF(2,0);
typedef void (wrap_hint_ftype) (struct ui_out * uiout, const char *identstring);
typedef void (flush_ftype) (struct ui_out * uiout);
typedef int (redirect_ftype) (struct ui_out * uiout,
			      struct ui_file * outstream);
typedef void (data_destroy_ftype) (struct ui_out *uiout);

/* ui-out-impl */

struct ui_out_impl
  {
    table_begin_ftype *table_begin;
    table_body_ftype *table_body;
    table_end_ftype *table_end;
    table_header_ftype *table_header;
    ui_out_begin_ftype *begin;
    ui_out_end_ftype *end;
    field_int_ftype *field_int;
    field_skip_ftype *field_skip;
    field_string_ftype *field_string;
    field_fmt_ftype *field_fmt;
    spaces_ftype *spaces;
    text_ftype *text;
    message_ftype *message;
    wrap_hint_ftype *wrap_hint;
    flush_ftype *flush;
    redirect_ftype *redirect;
    data_destroy_ftype *data_destroy;
    int is_mi_like_p;
  };

extern void *ui_out_data (struct ui_out *uiout);

extern void uo_field_string (struct ui_out *uiout, int fldno, int width,
			     enum ui_align align, const char *fldname,
			     const char *string);

/* Create a ui_out object */

extern struct ui_out *ui_out_new (const struct ui_out_impl *impl,
				  void *data,
				  int flags);

/* Redirect the ouptut of a ui_out object temporarily.  */

extern int ui_out_redirect (struct ui_out *uiout, struct ui_file *outstream);

#endif /* UI_OUT_H */