1 /* TUI display source window.
3 Copyright (C) 1998-2020 Free Software Foundation, Inc.
5 Contributed by Hewlett-Packard Company.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "breakpoint.h"
30 #include "filenames.h"
31 #include "source-cache.h"
34 #include "tui/tui-data.h"
35 #include "tui/tui-io.h"
36 #include "tui/tui-stack.h"
37 #include "tui/tui-win.h"
38 #include "tui/tui-winsource.h"
39 #include "tui/tui-source.h"
40 #include "gdb_curses.h"
42 /* Function to display source in the source window. */
44 tui_source_window::set_contents (struct gdbarch
*arch
,
45 const struct symtab_and_line
&sal
)
47 struct symtab
*s
= sal
.symtab
;
48 int line_no
= sal
.line
;
53 int line_width
, nlines
;
55 line_width
= width
- TUI_EXECINFO_SIZE
- 1;
56 /* Take hilite (window border) into account, when
57 calculating the number of lines. */
61 const std::vector
<off_t
> *offsets
;
62 if (!g_source_cache
.get_source_lines (s
, line_no
, line_no
+ nlines
,
64 || !g_source_cache
.get_line_charpos (s
, &offsets
))
67 int cur_line_no
, cur_line
;
68 struct tui_locator_window
*locator
69 = tui_locator_win_info_ptr ();
70 const char *s_filename
= symtab_to_filename_for_display (s
);
74 m_fullname
= make_unique_xstrdup (symtab_to_fullname (s
));
77 m_gdbarch
= SYMTAB_OBJFILE (s
)->arch ();
78 m_start_line_or_addr
.loa
= LOA_LINE
;
79 cur_line_no
= m_start_line_or_addr
.u
.line_no
= line_no
;
84 /* Solaris 11+gcc 5.5 has ambiguous overloads of log10, so we
85 cast to double to get the right one. */
86 double l
= log10 ((double) offsets
->size ());
90 const char *iter
= srclines
.c_str ();
91 m_content
.resize (nlines
);
92 while (cur_line
< nlines
)
94 struct tui_source_element
*element
= &m_content
[cur_line
];
98 text
= tui_copy_source_line (&iter
, cur_line_no
,
102 /* Set whether element is the execution point
103 and whether there is a break point on it. */
104 element
->line_or_addr
.loa
= LOA_LINE
;
105 element
->line_or_addr
.u
.line_no
= cur_line_no
;
106 element
->is_exec_point
107 = (filename_cmp (locator
->full_name
.c_str (),
108 symtab_to_fullname (s
)) == 0
109 && cur_line_no
== locator
->line_no
);
111 m_content
[cur_line
].line
= std::move (text
);
121 /* Answer whether the source is currently displayed in the source
124 tui_source_window::showing_source_p (const char *fullname
) const
126 return (!m_content
.empty ()
127 && (filename_cmp (tui_locator_win_info_ptr ()->full_name
.c_str (),
132 /* Scroll the source forward or backward vertically. */
134 tui_source_window::do_scroll_vertical (int num_to_scroll
)
136 if (!m_content
.empty ())
139 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
140 struct gdbarch
*arch
= m_gdbarch
;
142 if (cursal
.symtab
== NULL
)
144 struct frame_info
*fi
= get_selected_frame (NULL
);
145 s
= find_pc_line_symtab (get_frame_pc (fi
));
146 arch
= get_frame_arch (fi
);
151 int line_no
= m_start_line_or_addr
.u
.line_no
+ num_to_scroll
;
152 const std::vector
<off_t
> *offsets
;
153 if (g_source_cache
.get_line_charpos (s
, &offsets
)
154 && line_no
> offsets
->size ())
155 line_no
= m_start_line_or_addr
.u
.line_no
;
159 cursal
.line
= line_no
;
160 find_line_pc (cursal
.symtab
, cursal
.line
, &cursal
.pc
);
161 for (struct tui_source_window_base
*win_info
: tui_source_windows ())
162 win_info
->update_source_window_as_is (arch
, cursal
);
167 tui_source_window::location_matches_p (struct bp_location
*loc
, int line_no
)
169 return (m_content
[line_no
].line_or_addr
.loa
== LOA_LINE
170 && m_content
[line_no
].line_or_addr
.u
.line_no
== loc
->line_number
171 && loc
->symtab
!= NULL
172 && filename_cmp (m_fullname
.get (),
173 symtab_to_fullname (loc
->symtab
)) == 0);
176 /* See tui-source.h. */
179 tui_source_window::line_is_displayed (int line
) const
181 if (m_content
.size () < SCROLL_THRESHOLD
)
184 for (size_t i
= 0; i
< m_content
.size () - SCROLL_THRESHOLD
; ++i
)
186 if (m_content
[i
].line_or_addr
.loa
== LOA_LINE
187 && m_content
[i
].line_or_addr
.u
.line_no
== line
)
195 tui_source_window::maybe_update (struct frame_info
*fi
, symtab_and_line sal
)
197 int start_line
= (sal
.line
- ((height
- 2) / 2)) + 1;
201 bool source_already_displayed
= (sal
.symtab
!= 0
202 && showing_source_p (m_fullname
.get ()));
204 if (!(source_already_displayed
&& line_is_displayed (sal
.line
)))
206 sal
.line
= start_line
;
207 update_source_window (get_frame_arch (fi
), sal
);
211 struct tui_line_or_address l
;
214 l
.u
.line_no
= sal
.line
;
215 set_is_exec_point_at (l
);
220 tui_source_window::display_start_addr (struct gdbarch
**gdbarch_p
,
223 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
225 *gdbarch_p
= m_gdbarch
;
226 find_line_pc (cursal
.symtab
, m_start_line_or_addr
.u
.line_no
, addr_p
);
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