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file-and-dir.h
Go to the documentation of this file.
1/* DWARF file and directory
2
3 Copyright (C) 1994-2023 Free Software Foundation, Inc.
4
5 Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
6 Inc. with support from Florida State University (under contract
7 with the Ada Joint Program Office), and Silicon Graphics, Inc.
8 Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
9 based on Fred Fish's (Cygnus Support) implementation of DWARF 1
10 support.
11
12 This file is part of GDB.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26
27#ifndef GDB_DWARF2_FILE_AND_DIR_H
28#define GDB_DWARF2_FILE_AND_DIR_H
29
30#include "objfiles.h"
31#include "source.h"
32#include <string>
33
34/* The return type of find_file_and_directory. Note, the enclosed
35 string pointers are only valid while this object is valid. */
36
38{
39 file_and_directory (const char *name, const char *dir)
40 : m_name (name),
41 m_comp_dir (dir)
42 {
43 }
44
45 /* Return true if the file name is unknown. */
46 bool is_unknown () const
47 {
48 return m_name == nullptr;
49 }
50
51 /* Set the compilation directory. */
52 void set_comp_dir (std::string &&dir)
53 {
54 m_comp_dir_storage = std::move (dir);
55 m_comp_dir = nullptr;
56 }
57
58 /* Fetch the compilation directory. This may return NULL in some
59 circumstances. Note that the return value here is not stable --
60 it may change if this object is moved. To get a stable pointer,
61 you should call intern_comp_dir. */
62 const char *get_comp_dir () const
63 {
64 if (!m_comp_dir_storage.empty ())
65 return m_comp_dir_storage.c_str ();
66 return m_comp_dir;
67 }
68
69 /* If necessary, intern the compilation directory using OBJFILE's
70 string cache. Returns the compilation directory. */
71 const char *intern_comp_dir (struct objfile *objfile)
72 {
73 if (!m_comp_dir_storage.empty ())
74 {
76 m_comp_dir_storage.clear ();
77 }
78 return m_comp_dir;
79 }
80
81 /* Fetch the filename. This never returns NULL. */
82 const char *get_name () const
83 {
84 return m_name == nullptr ? "<unknown>" : m_name;
85 }
86
87 /* Set the filename. */
88 void set_name (gdb::unique_xmalloc_ptr<char> name)
89 {
90 m_name_storage = std::move (name);
91 m_name = m_name_storage.get ();
92 }
93
94 /* Return the full name, computing it if necessary. */
95 const char *get_fullname ()
96 {
97 if (m_fullname == nullptr)
99 return m_fullname.get ();
100 }
101
102 /* Forget the full name. */
104 {
105 m_fullname.reset ();
106 }
107
108private:
109
110 /* The filename. */
111 const char *m_name;
112
113 /* Storage for the filename, if needed. */
114 gdb::unique_xmalloc_ptr<char> m_name_storage;
115
116 /* The compilation directory. NULL if not known. If we needed to
117 compute a new string, it will be stored in the comp_dir_storage
118 member, and this will be NULL. Otherwise, points directly to the
119 DW_AT_comp_dir string attribute. */
120 const char *m_comp_dir;
121
122 /* The compilation directory, if it needed to be allocated. */
124
125 /* The full name. */
126 gdb::unique_xmalloc_ptr<char> m_fullname;
127};
128
129#endif /* GDB_DWARF2_FILE_AND_DIR_H */
const char *const name
gdb::unique_xmalloc_ptr< char > find_source_or_rewrite(const char *filename, const char *dirname)
Definition source.c:1199
std::string m_comp_dir_storage
const char * m_name
gdb::unique_xmalloc_ptr< char > m_name_storage
const char * get_name() const
gdb::unique_xmalloc_ptr< char > m_fullname
bool is_unknown() const
void set_name(gdb::unique_xmalloc_ptr< char > name)
const char * get_comp_dir() const
const char * m_comp_dir
void set_comp_dir(std::string &&dir)
file_and_directory(const char *name, const char *dir)
const char * get_fullname()
const char * intern_comp_dir(struct objfile *objfile)
const char * intern(const char *str)
Definition objfiles.h:494