Commit | Line | Data |
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f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
42a4f53d | 3 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
f33c6cbf | 4 | |
f377b406 SC |
5 | Contributed by Hewlett-Packard Company. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
f377b406 SC |
12 | (at your option) any later version. |
13 | ||
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. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
d1da6b01 | 23 | #include <math.h> |
c906108c SS |
24 | #include <ctype.h> |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
c2c6d25f | 28 | #include "source.h" |
13274fc3 | 29 | #include "objfiles.h" |
a7417d46 | 30 | #include "filenames.h" |
62f29fda | 31 | #include "source-cache.h" |
c906108c | 32 | |
d7b2e967 AC |
33 | #include "tui/tui.h" |
34 | #include "tui/tui-data.h" | |
62f29fda | 35 | #include "tui/tui-io.h" |
d7b2e967 | 36 | #include "tui/tui-stack.h" |
d1da6b01 | 37 | #include "tui/tui-win.h" |
d7b2e967 AC |
38 | #include "tui/tui-winsource.h" |
39 | #include "tui/tui-source.h" | |
6a83354a | 40 | #include "gdb_curses.h" |
c906108c | 41 | |
98427f35 | 42 | /* Function to display source in the source window. */ |
61c33f10 | 43 | bool |
81c82c4b | 44 | tui_source_window::set_contents (struct gdbarch *arch, |
9f7540a5 | 45 | const struct symtab_and_line &sal) |
c906108c | 46 | { |
9f7540a5 TT |
47 | struct symtab *s = sal.symtab; |
48 | int line_no = sal.line; | |
81c82c4b | 49 | |
61c33f10 TT |
50 | if (s == NULL) |
51 | return false; | |
52 | ||
53 | int line_width, nlines; | |
54 | ||
55 | line_width = width - TUI_EXECINFO_SIZE - 1; | |
56 | /* Take hilite (window border) into account, when | |
57 | calculating the number of lines. */ | |
58 | nlines = (line_no + (height - 2)) - line_no; | |
59 | ||
60 | std::string srclines; | |
61 | const std::vector<off_t> *offsets; | |
62 | if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines, | |
63 | &srclines) | |
64 | || !g_source_cache.get_line_charpos (s, &offsets)) | |
65 | return false; | |
66 | ||
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); | |
71 | ||
72 | title = s_filename; | |
c906108c | 73 | |
61c33f10 TT |
74 | m_fullname = make_unique_xstrdup (symtab_to_fullname (s)); |
75 | ||
76 | cur_line = 0; | |
77 | gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s)); | |
78 | start_line_or_addr.loa = LOA_LINE; | |
79 | cur_line_no = start_line_or_addr.u.line_no = line_no; | |
80 | ||
81 | int digits = 0; | |
82 | if (compact_source) | |
83 | { | |
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 ()); | |
87 | digits = 1 + (int) l; | |
88 | } | |
89 | ||
90 | const char *iter = srclines.c_str (); | |
91 | content.resize (nlines); | |
92 | while (cur_line < nlines) | |
c906108c | 93 | { |
61c33f10 TT |
94 | struct tui_source_element *element |
95 | = &content[cur_line]; | |
96 | ||
97 | std::string text; | |
98 | if (*iter != '\0') | |
99 | text = tui_copy_source_line (&iter, cur_line_no, | |
100 | horizontal_offset, | |
101 | line_width, digits); | |
102 | ||
103 | /* Set whether element is the execution point | |
104 | and whether there is a break point on it. */ | |
105 | element->line_or_addr.loa = LOA_LINE; | |
106 | element->line_or_addr.u.line_no = cur_line_no; | |
107 | element->is_exec_point | |
108 | = (filename_cmp (locator->full_name.c_str (), | |
109 | symtab_to_fullname (s)) == 0 | |
110 | && cur_line_no == locator->line_no); | |
111 | ||
112 | content[cur_line].line = std::move (text); | |
113 | ||
114 | cur_line++; | |
115 | cur_line_no++; | |
c906108c | 116 | } |
61c33f10 TT |
117 | |
118 | return true; | |
98427f35 | 119 | } |
c906108c SS |
120 | |
121 | ||
a358af15 AC |
122 | /* Answer whether the source is currently displayed in the source |
123 | window. */ | |
a38da35d TT |
124 | bool |
125 | tui_source_window::showing_source_p (const char *fullname) const | |
c906108c | 126 | { |
f6cc34a9 | 127 | return (!content.empty () |
9923f347 | 128 | && (filename_cmp (tui_locator_win_info_ptr ()->full_name.c_str (), |
56d397a3 | 129 | fullname) == 0)); |
98427f35 | 130 | } |
c906108c SS |
131 | |
132 | ||
98427f35 | 133 | /* Scroll the source forward or backward vertically. */ |
c906108c | 134 | void |
c3bd716f | 135 | tui_source_window::do_scroll_vertical (int num_to_scroll) |
c906108c | 136 | { |
53e7cdba | 137 | if (!content.empty ()) |
c906108c | 138 | { |
362c05fe | 139 | struct tui_line_or_address l; |
c906108c | 140 | struct symtab *s; |
52575520 | 141 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 142 | |
cafb3438 | 143 | if (cursal.symtab == NULL) |
34248c3a | 144 | s = find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 145 | else |
52575520 | 146 | s = cursal.symtab; |
c906108c | 147 | |
362c05fe | 148 | l.loa = LOA_LINE; |
57e4b379 | 149 | l.u.line_no = start_line_or_addr.u.line_no |
c3bd716f | 150 | + num_to_scroll; |
cb44333d TT |
151 | const std::vector<off_t> *offsets; |
152 | if (g_source_cache.get_line_charpos (s, &offsets) | |
153 | && l.u.line_no > offsets->size ()) | |
c3bd716f TT |
154 | /* line = s->nlines - win_info->content_size + 1; */ |
155 | /* elz: fix for dts 23398. */ | |
57e4b379 | 156 | l.u.line_no = start_line_or_addr.u.line_no; |
c3bd716f TT |
157 | if (l.u.line_no <= 0) |
158 | l.u.line_no = 1; | |
27229e99 | 159 | |
362c05fe | 160 | print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0); |
c906108c | 161 | } |
98427f35 | 162 | } |
b73dd877 | 163 | |
c2cd8994 TT |
164 | bool |
165 | tui_source_window::location_matches_p (struct bp_location *loc, int line_no) | |
166 | { | |
167 | return (content[line_no].line_or_addr.loa == LOA_LINE | |
168 | && content[line_no].line_or_addr.u.line_no == loc->line_number | |
169 | && loc->symtab != NULL | |
7226433c | 170 | && filename_cmp (m_fullname.get (), |
c2cd8994 TT |
171 | symtab_to_fullname (loc->symtab)) == 0); |
172 | } | |
a54700c6 | 173 | |
c9033fe8 TT |
174 | /* See tui-source.h. */ |
175 | ||
176 | bool | |
177 | tui_source_window::line_is_displayed (int line) const | |
178 | { | |
179 | bool is_displayed = false; | |
180 | int threshold = SCROLL_THRESHOLD; | |
181 | int i = 0; | |
182 | while (i < content.size () - threshold && !is_displayed) | |
183 | { | |
184 | is_displayed | |
185 | = (content[i].line_or_addr.loa == LOA_LINE | |
186 | && content[i].line_or_addr.u.line_no == line); | |
187 | i++; | |
188 | } | |
189 | ||
190 | return is_displayed; | |
191 | } | |
192 | ||
a54700c6 | 193 | void |
1ae58f0c | 194 | tui_source_window::maybe_update (struct frame_info *fi, symtab_and_line sal) |
a54700c6 | 195 | { |
1ae58f0c | 196 | int start_line = (sal.line - (viewport_height / 2)) + 1; |
a54700c6 TT |
197 | if (start_line <= 0) |
198 | start_line = 1; | |
199 | ||
200 | bool source_already_displayed = (sal.symtab != 0 | |
7226433c | 201 | && showing_source_p (m_fullname.get ())); |
a54700c6 | 202 | |
1ae58f0c | 203 | if (!(source_already_displayed && line_is_displayed (sal.line))) |
9f7540a5 TT |
204 | { |
205 | sal.line = start_line; | |
206 | update_source_window (get_frame_arch (fi), sal); | |
207 | } | |
a54700c6 TT |
208 | else |
209 | { | |
9f7540a5 TT |
210 | struct tui_line_or_address l; |
211 | ||
212 | l.loa = LOA_LINE; | |
1ae58f0c | 213 | l.u.line_no = sal.line; |
a54700c6 TT |
214 | set_is_exec_point_at (l); |
215 | } | |
216 | } |