1 /* Declarations for value printing routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
23 #include "cli/cli-option.h"
25 /* This is used to pass formatting options to various value-printing
27 struct value_print_options
29 /* Pretty-formatting control. */
30 enum val_prettyformat prettyformat;
32 /* Controls pretty formatting of arrays. */
33 int prettyformat_arrays;
35 /* Controls pretty formatting of structures. */
36 int prettyformat_structs;
38 /* Controls printing of virtual tables. */
41 /* Controls printing of nested unions. */
44 /* Controls printing of addresses. */
47 /* Controls looking up an object's derived type using what we find
51 /* Maximum number of chars to print for a string pointer value or vector
52 contents, or UINT_MAX for no limit. Note that "set print elements 0"
53 stores UINT_MAX in print_max, which displays in a show command as
55 unsigned int print_max;
57 /* Print repeat counts if there are more than this many repetitions
58 of an element in an array. */
59 unsigned int repeat_count_threshold;
61 /* The global output format letter. */
64 /* The current format letter. This is set locally for a given call,
65 e.g. when the user passes a format to "print". */
68 /* Stop printing at null character? */
69 int stop_print_at_null;
71 /* True if we should print the index of each element when printing
73 int print_array_indexes;
75 /* If nonzero, then dereference references, otherwise just print
76 them like pointers. */
79 /* If nonzero, print static fields. */
80 int static_field_print;
82 /* If nonzero, print static fields for Pascal. FIXME: C++ has a
83 flag, why not share with Pascal too? */
84 int pascal_static_field_print;
86 /* If non-zero don't do Python pretty-printing. */
89 /* If nonzero, print the value in "summary" form.
90 If raw and summary are both non-zero, don't print non-scalar values
91 ("..." is printed instead). */
94 /* If nonzero, when printing a pointer, print the symbol to which it
98 /* Maximum print depth when printing nested aggregates. */
101 /* Whether "finish" should print the value. */
105 /* Create an option_def_group for the value_print options, with OPTS
107 extern gdb::option::option_def_group make_value_print_options_def_group
108 (value_print_options *opts);
110 /* The global print options set by the user. In general this should
111 not be directly accessed, except by set/show commands. Ordinary
112 code should call get_user_print_options instead. */
113 extern struct value_print_options user_print_options;
115 /* Initialize *OPTS to be a copy of the user print options. */
116 extern void get_user_print_options (struct value_print_options *opts);
118 /* Initialize *OPTS to be a copy of the user print options, but with
119 pretty-formatting disabled. */
120 extern void get_no_prettyformat_print_options (struct value_print_options *);
122 /* Initialize *OPTS to be a copy of the user print options, but using
123 FORMAT as the formatting option. */
124 extern void get_formatted_print_options (struct value_print_options *opts,
127 extern void maybe_print_array_index (struct type *index_type, LONGEST index,
128 struct ui_file *stream,
129 const struct value_print_options *);
131 extern void val_print_array_elements (struct type *, LONGEST,
132 CORE_ADDR, struct ui_file *, int,
134 const struct value_print_options *,
137 extern void val_print_scalar_formatted (struct type *,
140 const struct value_print_options *,
144 extern void print_binary_chars (struct ui_file *, const gdb_byte *,
145 unsigned int, enum bfd_endian, bool);
147 extern void print_octal_chars (struct ui_file *, const gdb_byte *,
148 unsigned int, enum bfd_endian);
150 extern void print_decimal_chars (struct ui_file *, const gdb_byte *,
151 unsigned int, bool, enum bfd_endian);
153 extern void print_hex_chars (struct ui_file *, const gdb_byte *,
154 unsigned int, enum bfd_endian, bool);
156 extern void print_char_chars (struct ui_file *, struct type *,
157 const gdb_byte *, unsigned int, enum bfd_endian);
159 extern void print_function_pointer_address (const struct value_print_options *options,
160 struct gdbarch *gdbarch,
162 struct ui_file *stream);
164 extern int read_string (CORE_ADDR addr, int len, int width,
165 unsigned int fetchlimit,
166 enum bfd_endian byte_order,
167 gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
170 extern void val_print_optimized_out (const struct value *val,
171 struct ui_file *stream);
173 /* Prints "<not saved>" to STREAM. */
174 extern void val_print_not_saved (struct ui_file *stream);
176 extern void val_print_unavailable (struct ui_file *stream);
178 extern void val_print_invalid_address (struct ui_file *stream);
180 /* An instance of this is passed to generic_val_print and describes
181 some language-specific ways to print things. */
183 struct generic_val_print_decorations
185 /* Printing complex numbers: what to print before, between the
186 elements, and after. */
188 const char *complex_prefix;
189 const char *complex_infix;
190 const char *complex_suffix;
192 /* Boolean true and false. */
194 const char *true_name;
195 const char *false_name;
197 /* What to print when we see TYPE_CODE_VOID. */
199 const char *void_name;
201 /* Array start and end strings. */
202 const char *array_start;
203 const char *array_end;
207 extern void generic_val_print (struct type *type,
208 int embedded_offset, CORE_ADDR address,
209 struct ui_file *stream, int recurse,
210 struct value *original_value,
211 const struct value_print_options *options,
212 const struct generic_val_print_decorations *);
214 extern void generic_emit_char (int c, struct type *type, struct ui_file *stream,
215 int quoter, const char *encoding);
217 extern void generic_printstr (struct ui_file *stream, struct type *type,
218 const gdb_byte *string, unsigned int length,
219 const char *encoding, int force_ellipses,
220 int quote_char, int c_style_terminator,
221 const struct value_print_options *options);
223 /* Run the "output" command. ARGS and FROM_TTY are the usual
224 arguments passed to all command implementations, except ARGS is
227 extern void output_command (const char *args, int from_tty);
229 extern int val_print_scalar_type_p (struct type *type);
237 /* True if the value should be printed raw -- that is, bypassing
238 python-based formatters. */
242 extern void print_command_parse_format (const char **expp, const char *cmdname,
243 value_print_options *opts);
245 /* Print VAL to console according to OPTS, including recording it to
247 extern void print_value (value *val, const value_print_options &opts);
249 /* Completer for the "print", "call", and "compile print"
251 extern void print_command_completer (struct cmd_list_element *ignore,
252 completion_tracker &tracker,
253 const char *text, const char *word);
255 /* Given an address ADDR return all the elements needed to print the
256 address in a symbolic form. NAME can be mangled or not depending
257 on DO_DEMANGLE (and also on the asm_demangle global variable,
258 manipulated via ''set print asm-demangle''). Return 0 in case of
259 success, when all the info in the OUT paramters is valid. Return 1
262 extern int build_address_symbolic (struct gdbarch *,
267 std::string *filename,
271 /* Check to see if RECURSE is greater than or equal to the allowed
272 printing max-depth (see 'set print max-depth'). If it is then print an
273 ellipsis expression to STREAM and return true, otherwise return false.
274 LANGUAGE determines what type of ellipsis expression is printed. */
276 extern bool val_print_check_max_depth (struct ui_file *stream, int recurse,
277 const struct value_print_options *opts,
278 const struct language_defn *language);