1 /* Declarations for value printing routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2018 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 /* This is used to pass formatting options to various value-printing
25 struct value_print_options
27 /* Pretty-formatting control. */
28 enum val_prettyformat prettyformat;
30 /* Controls pretty formatting of arrays. */
31 int prettyformat_arrays;
33 /* Controls pretty formatting of structures. */
34 int prettyformat_structs;
36 /* Controls printing of virtual tables. */
39 /* Controls printing of nested unions. */
42 /* Controls printing of addresses. */
45 /* Controls looking up an object's derived type using what we find
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
53 unsigned int print_max;
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;
59 /* The global output format letter. */
62 /* The current format letter. This is set locally for a given call,
63 e.g. when the user passes a format to "print". */
66 /* Stop printing at null character? */
67 int stop_print_at_null;
69 /* True if we should print the index of each element when printing
71 int print_array_indexes;
73 /* If nonzero, then dereference references, otherwise just print
74 them like pointers. */
77 /* If nonzero, print static fields. */
78 int static_field_print;
80 /* If nonzero, print static fields for Pascal. FIXME: C++ has a
81 flag, why not share with Pascal too? */
82 int pascal_static_field_print;
84 /* If non-zero don't do Python pretty-printing. */
87 /* If nonzero, print the value in "summary" form.
88 If raw and summary are both non-zero, don't print non-scalar values
89 ("..." is printed instead). */
92 /* If nonzero, when printing a pointer, print the symbol to which it
97 /* The global print options set by the user. In general this should
98 not be directly accessed, except by set/show commands. Ordinary
99 code should call get_user_print_options instead. */
100 extern struct value_print_options user_print_options;
102 /* Initialize *OPTS to be a copy of the user print options. */
103 extern void get_user_print_options (struct value_print_options *opts);
105 /* Initialize *OPTS to be a copy of the user print options, but with
106 pretty-formatting disabled. */
107 extern void get_no_prettyformat_print_options (struct value_print_options *);
109 /* Initialize *OPTS to be a copy of the user print options, but using
110 FORMAT as the formatting option. */
111 extern void get_formatted_print_options (struct value_print_options *opts,
114 extern void maybe_print_array_index (struct type *index_type, LONGEST index,
115 struct ui_file *stream,
116 const struct value_print_options *);
118 extern void val_print_array_elements (struct type *, LONGEST,
119 CORE_ADDR, struct ui_file *, int,
121 const struct value_print_options *,
124 extern void val_print_scalar_formatted (struct type *,
127 const struct value_print_options *,
131 extern void print_binary_chars (struct ui_file *, const gdb_byte *,
132 unsigned int, enum bfd_endian, bool);
134 extern void print_octal_chars (struct ui_file *, const gdb_byte *,
135 unsigned int, enum bfd_endian);
137 extern void print_decimal_chars (struct ui_file *, const gdb_byte *,
138 unsigned int, bool, enum bfd_endian);
140 extern void print_hex_chars (struct ui_file *, const gdb_byte *,
141 unsigned int, enum bfd_endian, bool);
143 extern void print_char_chars (struct ui_file *, struct type *,
144 const gdb_byte *, unsigned int, enum bfd_endian);
146 extern void print_function_pointer_address (const struct value_print_options *options,
147 struct gdbarch *gdbarch,
149 struct ui_file *stream);
151 extern int read_string (CORE_ADDR addr, int len, int width,
152 unsigned int fetchlimit,
153 enum bfd_endian byte_order,
154 gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
157 extern void val_print_optimized_out (const struct value *val,
158 struct ui_file *stream);
160 /* Prints "<not saved>" to STREAM. */
161 extern void val_print_not_saved (struct ui_file *stream);
163 extern void val_print_unavailable (struct ui_file *stream);
165 extern void val_print_invalid_address (struct ui_file *stream);
167 /* An instance of this is passed to generic_val_print and describes
168 some language-specific ways to print things. */
170 struct generic_val_print_decorations
172 /* Printing complex numbers: what to print before, between the
173 elements, and after. */
175 const char *complex_prefix;
176 const char *complex_infix;
177 const char *complex_suffix;
179 /* Boolean true and false. */
181 const char *true_name;
182 const char *false_name;
184 /* What to print when we see TYPE_CODE_VOID. */
186 const char *void_name;
188 /* Array start and end strings. */
189 const char *array_start;
190 const char *array_end;
194 extern void generic_val_print (struct type *type,
195 int embedded_offset, CORE_ADDR address,
196 struct ui_file *stream, int recurse,
197 struct value *original_value,
198 const struct value_print_options *options,
199 const struct generic_val_print_decorations *);
201 extern void generic_emit_char (int c, struct type *type, struct ui_file *stream,
202 int quoter, const char *encoding);
204 extern void generic_printstr (struct ui_file *stream, struct type *type,
205 const gdb_byte *string, unsigned int length,
206 const char *encoding, int force_ellipses,
207 int quote_char, int c_style_terminator,
208 const struct value_print_options *options);
210 /* Run the "output" command. ARGS and FROM_TTY are the usual
211 arguments passed to all command implementations, except ARGS is
214 extern void output_command (const char *args, int from_tty);
216 extern int val_print_scalar_type_p (struct type *type);
224 /* True if the value should be printed raw -- that is, bypassing
225 python-based formatters. */
229 extern void print_command_parse_format (const char **expp, const char *cmdname,
230 struct format_data *fmtp);
231 extern void print_value (struct value *val, const struct format_data *fmtp);
233 /* Given an address ADDR return all the elements needed to print the
234 address in a symbolic form. NAME can be mangled or not depending
235 on DO_DEMANGLE (and also on the asm_demangle global variable,
236 manipulated via ''set print asm-demangle''). Return 0 in case of
237 success, when all the info in the OUT paramters is valid. Return 1
240 extern int build_address_symbolic (struct gdbarch *,
245 std::string *filename,