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/* Declarations for value printing routines for GDB, the GNU debugger.
Copyright (C) 1986-2020 Free Software Foundation, Inc.
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
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 <>. */
#ifndef VALPRINT_H
#define VALPRINT_H
#include "cli/cli-option.h"
/* This is used to pass formatting options to various value-printing
functions. */
struct value_print_options
/* Pretty-formatting control. */
enum val_prettyformat prettyformat;
/* Controls pretty formatting of arrays. */
bool prettyformat_arrays;
/* Controls pretty formatting of structures. */
bool prettyformat_structs;
/* Controls printing of virtual tables. */
bool vtblprint;
/* Controls printing of nested unions. */
bool unionprint;
/* Controls printing of addresses. */
bool addressprint;
/* Controls looking up an object's derived type using what we find
in its vtables. */
bool objectprint;
/* Maximum number of chars to print for a string pointer value or vector
contents, or UINT_MAX for no limit. Note that "set print elements 0"
stores UINT_MAX in print_max, which displays in a show command as
"unlimited". */
unsigned int print_max;
/* Print repeat counts if there are more than this many repetitions
of an element in an array. */
unsigned int repeat_count_threshold;
/* The global output format letter. */
int output_format;
/* The current format letter. This is set locally for a given call,
e.g. when the user passes a format to "print". */
int format;
/* Stop printing at null character? */
bool stop_print_at_null;
/* True if we should print the index of each element when printing
an array. */
bool print_array_indexes;
/* If true, then dereference references, otherwise just print
them like pointers. */
bool deref_ref;
/* If true, print static fields. */
bool static_field_print;
/* If true, print static fields for Pascal. FIXME: C++ has a
flag, why not share with Pascal too? */
bool pascal_static_field_print;
/* If true, don't do Python pretty-printing. */
bool raw;
/* If true, print the value in "summary" form.
If raw and summary are both true, don't print non-scalar values
("..." is printed instead). */
bool summary;
/* If true, when printing a pointer, print the symbol to which it
points, if any. */
bool symbol_print;
/* Maximum print depth when printing nested aggregates. */
int max_depth;
/* Whether "finish" should print the value. */
bool finish_print;
/* Create an option_def_group for the value_print options, with OPTS
as context. */
extern gdb::option::option_def_group make_value_print_options_def_group
(value_print_options *opts);
/* The global print options set by the user. In general this should
not be directly accessed, except by set/show commands. Ordinary
code should call get_user_print_options instead. */
extern struct value_print_options user_print_options;
/* Initialize *OPTS to be a copy of the user print options. */
extern void get_user_print_options (struct value_print_options *opts);
/* Initialize *OPTS to be a copy of the user print options, but with
pretty-formatting disabled. */
extern void get_no_prettyformat_print_options (struct value_print_options *);
/* Initialize *OPTS to be a copy of the user print options, but using
FORMAT as the formatting option. */
extern void get_formatted_print_options (struct value_print_options *opts,
char format);
extern void maybe_print_array_index (struct type *index_type, LONGEST index,
struct ui_file *stream,
const struct value_print_options *);
extern void val_print_array_elements (struct type *, LONGEST,
CORE_ADDR, struct ui_file *, int,
struct value *,
const struct value_print_options *,
unsigned int);
extern void val_print_scalar_formatted (struct type *,
struct value *,
const struct value_print_options *,
struct ui_file *);
extern void print_binary_chars (struct ui_file *, const gdb_byte *,
unsigned int, enum bfd_endian, bool);
extern void print_octal_chars (struct ui_file *, const gdb_byte *,
unsigned int, enum bfd_endian);
extern void print_decimal_chars (struct ui_file *, const gdb_byte *,
unsigned int, bool, enum bfd_endian);
extern void print_hex_chars (struct ui_file *, const gdb_byte *,
unsigned int, enum bfd_endian, bool);
extern void print_char_chars (struct ui_file *, struct type *,
const gdb_byte *, unsigned int, enum bfd_endian);
extern void print_function_pointer_address (const struct value_print_options *options,
struct gdbarch *gdbarch,
CORE_ADDR address,
struct ui_file *stream);
extern int read_string (CORE_ADDR addr, int len, int width,
unsigned int fetchlimit,
enum bfd_endian byte_order,
gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
int *bytes_read);
extern void val_print_optimized_out (const struct value *val,
struct ui_file *stream);
/* Prints "<not saved>" to STREAM. */
extern void val_print_not_saved (struct ui_file *stream);
extern void val_print_unavailable (struct ui_file *stream);
extern void val_print_invalid_address (struct ui_file *stream);
/* An instance of this is passed to generic_val_print and describes
some language-specific ways to print things. */
struct generic_val_print_decorations
/* Printing complex numbers: what to print before, between the
elements, and after. */
const char *complex_prefix;
const char *complex_infix;
const char *complex_suffix;
/* Boolean true and false. */
const char *true_name;
const char *false_name;
/* What to print when we see TYPE_CODE_VOID. */
const char *void_name;
/* Array start and end strings. */
const char *array_start;
const char *array_end;
extern void generic_val_print (struct type *type,
int embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
struct value *original_value,
const struct value_print_options *options,
const struct generic_val_print_decorations *);
extern void generic_emit_char (int c, struct type *type, struct ui_file *stream,
int quoter, const char *encoding);
extern void generic_printstr (struct ui_file *stream, struct type *type,
const gdb_byte *string, unsigned int length,
const char *encoding, int force_ellipses,
int quote_char, int c_style_terminator,
const struct value_print_options *options);
/* Run the "output" command. ARGS and FROM_TTY are the usual
arguments passed to all command implementations, except ARGS is
const. */
extern void output_command (const char *args, int from_tty);
extern int val_print_scalar_type_p (struct type *type);
struct format_data
int count;
char format;
char size;
/* True if the value should be printed raw -- that is, bypassing
python-based formatters. */
unsigned char raw;
extern void print_command_parse_format (const char **expp, const char *cmdname,
value_print_options *opts);
/* Print VAL to console according to OPTS, including recording it to
the history. */
extern void print_value (value *val, const value_print_options &opts);
/* Completer for the "print", "call", and "compile print"
commands. */
extern void print_command_completer (struct cmd_list_element *ignore,
completion_tracker &tracker,
const char *text, const char *word);
/* Given an address ADDR return all the elements needed to print the
address in a symbolic form. NAME can be mangled or not depending
on DO_DEMANGLE (and also on the asm_demangle global variable,
manipulated via ''set print asm-demangle''). When
PREFER_SYM_OVER_MINSYM is true, names (and offsets) from minimal
symbols won't be used except in instances where no symbol was
found; otherwise, a minsym might be used in some instances (mostly
involving function with non-contiguous address ranges). Return
0 in case of success, when all the info in the OUT parameters is
valid. Return 1 otherwise. */
extern int build_address_symbolic (struct gdbarch *,
bool do_demangle,
bool prefer_sym_over_minsym,
std::string *name,
int *offset,
std::string *filename,
int *line,
int *unmapped);
/* Check to see if RECURSE is greater than or equal to the allowed
printing max-depth (see 'set print max-depth'). If it is then print an
ellipsis expression to STREAM and return true, otherwise return false.
LANGUAGE determines what type of ellipsis expression is printed. */
extern bool val_print_check_max_depth (struct ui_file *stream, int recurse,
const struct value_print_options *opts,
const struct language_defn *language);