gdb/valprint.h

   1 /* Declarations for value printing routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1986-2013 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef VALPRINT_H
  21 #define VALPRINT_H
  22
  23 /* This is used to pass formatting options to various value-printing
  24    functions.  */
  25 struct value_print_options
  26 {
  27   /* Pretty-printing control.  */
  28   enum val_prettyprint pretty;
  29
  30   /* Controls pretty printing of arrays.  */
  31   int prettyprint_arrays;
  32
  33   /* Controls pretty printing of structures.  */
  34   int prettyprint_structs;
  35
  36   /* Controls printing of virtual tables.  */
  37   int vtblprint;
  38
  39   /* Controls printing of nested unions.  */
  40   int unionprint;
  41
  42   /* Controls printing of addresses.  */
  43   int addressprint;
  44
  45   /* Controls looking up an object's derived type using what we find
  46      in its vtables.  */
  47   int objectprint;
  48
  49   /* Maximum number of chars to print for a string pointer value or vector
  50      contents, or UINT_MAX for no limit.  Note that "set print elements 0"
  51      stores UINT_MAX in print_max, which displays in a show command as
  52      "unlimited".  */
  53   unsigned int print_max;
  54
  55   /* Print repeat counts if there are more than this many repetitions
  56      of an element in an array.  */
  57   unsigned int repeat_count_threshold;
  58
  59   /* The global output format letter.  */
  60   int output_format;
  61
  62   /* The current format letter.  This is set locally for a given call,
  63      e.g. when the user passes a format to "print".  */
  64   int format;
  65
  66   /* Stop printing at null character?  */
  67   int stop_print_at_null;
  68
  69   /* True if we should print the index of each element when printing
  70      an array.  */
  71   int print_array_indexes;
  72
  73   /* If nonzero, then dereference references, otherwise just print
  74      them like pointers.  */
  75   int deref_ref;
  76
  77   /* If nonzero, print static fields.  */
  78   int static_field_print;
  79
  80   /* If nonzero, print static fields for Pascal.  FIXME: C++ and Java
  81      share one flag, why not Pascal too?  */
  82   int pascal_static_field_print;
  83
  84   /* Controls Python pretty-printing.  */
  85   int raw;
  86
  87   /* If nonzero, print the value in "summary" form.  */
  88   int summary;
  89
  90   /* If nonzero, when printing a pointer, print the symbol to which it
  91      points, if any.  */
  92   int symbol_print;
  93 };
  94
  95 /* The global print options set by the user.  In general this should
  96    not be directly accessed, except by set/show commands.  Ordinary
  97    code should call get_user_print_options instead.  */
  98 extern struct value_print_options user_print_options;
  99
 100 /* Initialize *OPTS to be a copy of the user print options.  */
 101 extern void get_user_print_options (struct value_print_options *opts);
 102
 103 /* Initialize *OPTS to be a copy of the user print options, but with
 104    pretty-printing disabled.  */
 105 extern void get_raw_print_options (struct value_print_options *opts);
 106
 107 /* Initialize *OPTS to be a copy of the user print options, but using
 108    FORMAT as the formatting option.  */
 109 extern void get_formatted_print_options (struct value_print_options *opts,
 110                                          char format);
 111
 112 extern void maybe_print_array_index (struct type *index_type, LONGEST index,
 113                                      struct ui_file *stream,
 114                                      const struct value_print_options *);
 115
 116 extern void val_print_array_elements (struct type *, const gdb_byte *, int,
 117                                       CORE_ADDR, struct ui_file *, int,
 118                                       const struct value *,
 119                                       const struct value_print_options *,
 120                                       unsigned int);
 121
 122 extern void val_print_type_code_int (struct type *, const gdb_byte *,
 123                                      struct ui_file *);
 124
 125 extern void val_print_type_code_flags (struct type *type,
 126                                        const gdb_byte *valaddr,
 127                                        struct ui_file *stream);
 128
 129 extern void val_print_scalar_formatted (struct type *,
 130                                         const gdb_byte *, int,
 131                                         const struct value *,
 132                                         const struct value_print_options *,
 133                                         int,
 134                                         struct ui_file *);
 135
 136 extern void print_binary_chars (struct ui_file *, const gdb_byte *,
 137                                 unsigned int, enum bfd_endian);
 138
 139 extern void print_octal_chars (struct ui_file *, const gdb_byte *,
 140                                unsigned int, enum bfd_endian);
 141
 142 extern void print_decimal_chars (struct ui_file *, const gdb_byte *,
 143                                  unsigned int, enum bfd_endian);
 144
 145 extern void print_hex_chars (struct ui_file *, const gdb_byte *,
 146                              unsigned int, enum bfd_endian);
 147
 148 extern void print_char_chars (struct ui_file *, struct type *,
 149                               const gdb_byte *, unsigned int, enum bfd_endian);
 150
 151 extern void print_function_pointer_address (const struct value_print_options *options,
 152                                             struct gdbarch *gdbarch,
 153                                             CORE_ADDR address,
 154                                             struct ui_file *stream);
 155
 156 extern int read_string (CORE_ADDR addr, int len, int width,
 157                         unsigned int fetchlimit,
 158                         enum bfd_endian byte_order, gdb_byte **buffer,
 159                         int *bytes_read);
 160
 161 extern void val_print_optimized_out (struct ui_file *stream);
 162
 163 extern void val_print_unavailable (struct ui_file *stream);
 164
 165 extern void val_print_invalid_address (struct ui_file *stream);
 166
 167 /* An instance of this is passed to generic_val_print and describes
 168    some language-specific ways to print things.  */
 169
 170 struct generic_val_print_decorations
 171 {
 172   /* Printing complex numbers: what to print before, between the
 173      elements, and after.  */
 174
 175   const char *complex_prefix;
 176   const char *complex_infix;
 177   const char *complex_suffix;
 178
 179   /* Boolean true and false.  */
 180
 181   const char *true_name;
 182   const char *false_name;
 183
 184   /* What to print when we see TYPE_CODE_VOID.  */
 185
 186   const char *void_name;
 187 };
 188
 189
 190 extern void generic_val_print (struct type *type, const gdb_byte *valaddr,
 191                                int embedded_offset, CORE_ADDR address,
 192                                struct ui_file *stream, int recurse,
 193                                const struct value *original_value,
 194                                const struct value_print_options *options,
 195                                const struct generic_val_print_decorations *);
 196
 197 extern void generic_emit_char (int c, struct type *type, struct ui_file *stream,
 198                                int quoter, const char *encoding);
 199
 200 extern void generic_printstr (struct ui_file *stream, struct type *type,
 201                               const gdb_byte *string, unsigned int length,
 202                               const char *encoding, int force_ellipses,
 203                               int quote_char, int c_style_terminator,
 204                               const struct value_print_options *options);
 205
 206 /* Run the "output" command.  ARGS and FROM_TTY are the usual
 207    arguments passed to all command implementations, except ARGS is
 208    const.  */
 209
 210 extern void output_command_const (const char *args, int from_tty);
 211
 212 #endif