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" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
c2c6d25f | 27 | #include "source.h" |
13274fc3 | 28 | #include "objfiles.h" |
a7417d46 | 29 | #include "filenames.h" |
62f29fda | 30 | #include "source-cache.h" |
c906108c | 31 | |
d7b2e967 AC |
32 | #include "tui/tui.h" |
33 | #include "tui/tui-data.h" | |
62f29fda | 34 | #include "tui/tui-io.h" |
d7b2e967 AC |
35 | #include "tui/tui-stack.h" |
36 | #include "tui/tui-winsource.h" | |
37 | #include "tui/tui-source.h" | |
6a83354a | 38 | #include "gdb_curses.h" |
c906108c | 39 | |
98427f35 | 40 | /* Function to display source in the source window. */ |
a358af15 | 41 | enum tui_status |
81c82c4b TT |
42 | tui_source_window::set_contents (struct gdbarch *arch, |
43 | struct symtab *s, | |
44 | struct tui_line_or_address line_or_addr) | |
c906108c | 45 | { |
81c82c4b TT |
46 | gdb_assert (line_or_addr.loa == LOA_LINE); |
47 | int line_no = line_or_addr.u.line_no; | |
48 | ||
22940a24 | 49 | enum tui_status ret = TUI_FAILURE; |
c906108c | 50 | |
cafb3438 | 51 | if (s != NULL) |
c906108c | 52 | { |
62f29fda | 53 | int line_width, nlines; |
c906108c | 54 | |
29d2c474 | 55 | ret = TUI_SUCCESS; |
398fdd60 | 56 | line_width = width - TUI_EXECINFO_SIZE - 1; |
29d2c474 TT |
57 | /* Take hilite (window border) into account, when |
58 | calculating the number of lines. */ | |
81c82c4b | 59 | nlines = (line_no + (height - 2)) - line_no; |
29d2c474 TT |
60 | |
61 | std::string srclines; | |
62 | if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines, | |
63 | &srclines)) | |
20149b6b | 64 | ret = TUI_FAILURE; |
29d2c474 TT |
65 | else |
66 | { | |
67 | int cur_line_no, cur_line; | |
3add462f | 68 | struct tui_locator_window *locator |
29d2c474 | 69 | = tui_locator_win_info_ptr (); |
29d2c474 TT |
70 | const char *s_filename = symtab_to_filename_for_display (s); |
71 | ||
ab0e1f1a | 72 | title = s_filename; |
29d2c474 | 73 | |
7226433c | 74 | m_fullname = make_unique_xstrdup (symtab_to_fullname (s)); |
29d2c474 TT |
75 | |
76 | cur_line = 0; | |
81c82c4b TT |
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; | |
29d2c474 TT |
80 | |
81 | const char *iter = srclines.c_str (); | |
81c82c4b | 82 | content.resize (nlines); |
29d2c474 | 83 | while (cur_line < nlines) |
c906108c | 84 | { |
53e7cdba | 85 | struct tui_source_element *element |
81c82c4b | 86 | = &content[cur_line]; |
29d2c474 TT |
87 | |
88 | std::string text; | |
89 | if (*iter != '\0') | |
1df2f9ef TT |
90 | text = tui_copy_source_line (&iter, cur_line_no, |
91 | horizontal_offset, | |
92 | line_width); | |
29d2c474 TT |
93 | |
94 | /* Set whether element is the execution point | |
95 | and whether there is a break point on it. */ | |
53e7cdba TT |
96 | element->line_or_addr.loa = LOA_LINE; |
97 | element->line_or_addr.u.line_no = cur_line_no; | |
98 | element->is_exec_point | |
9923f347 | 99 | = (filename_cmp (locator->full_name.c_str (), |
53e7cdba TT |
100 | symtab_to_fullname (s)) == 0 |
101 | && cur_line_no == locator->line_no); | |
102 | ||
5d051055 | 103 | content[cur_line].line = std::move (text); |
29d2c474 TT |
104 | |
105 | cur_line++; | |
106 | cur_line_no++; | |
c906108c | 107 | } |
29d2c474 | 108 | ret = TUI_SUCCESS; |
c906108c SS |
109 | } |
110 | } | |
111 | return ret; | |
98427f35 | 112 | } |
c906108c SS |
113 | |
114 | ||
98427f35 SC |
115 | /* Function to display source in the source window. This function |
116 | initializes the horizontal scroll to 0. */ | |
c906108c | 117 | void |
bb01dbfc TT |
118 | tui_source_window::show_symtab_source (struct gdbarch *gdbarch, |
119 | struct symtab *s, | |
120 | struct tui_line_or_address line) | |
c906108c | 121 | { |
bb01dbfc TT |
122 | horizontal_offset = 0; |
123 | update_source_window_as_is (gdbarch, s, line); | |
98427f35 | 124 | } |
c906108c | 125 | |
c906108c | 126 | |
a358af15 AC |
127 | /* Answer whether the source is currently displayed in the source |
128 | window. */ | |
a38da35d TT |
129 | bool |
130 | tui_source_window::showing_source_p (const char *fullname) const | |
c906108c | 131 | { |
f6cc34a9 | 132 | return (!content.empty () |
9923f347 | 133 | && (filename_cmp (tui_locator_win_info_ptr ()->full_name.c_str (), |
56d397a3 | 134 | fullname) == 0)); |
98427f35 | 135 | } |
c906108c SS |
136 | |
137 | ||
98427f35 | 138 | /* Scroll the source forward or backward vertically. */ |
c906108c | 139 | void |
c3bd716f | 140 | tui_source_window::do_scroll_vertical (int num_to_scroll) |
c906108c | 141 | { |
53e7cdba | 142 | if (!content.empty ()) |
c906108c | 143 | { |
362c05fe | 144 | struct tui_line_or_address l; |
c906108c | 145 | struct symtab *s; |
52575520 | 146 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 147 | |
cafb3438 | 148 | if (cursal.symtab == NULL) |
34248c3a | 149 | s = find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 150 | else |
52575520 | 151 | s = cursal.symtab; |
c906108c | 152 | |
362c05fe | 153 | l.loa = LOA_LINE; |
53e7cdba | 154 | l.u.line_no = content[0].line_or_addr.u.line_no |
c3bd716f | 155 | + num_to_scroll; |
cb44333d TT |
156 | const std::vector<off_t> *offsets; |
157 | if (g_source_cache.get_line_charpos (s, &offsets) | |
158 | && l.u.line_no > offsets->size ()) | |
c3bd716f TT |
159 | /* line = s->nlines - win_info->content_size + 1; */ |
160 | /* elz: fix for dts 23398. */ | |
53e7cdba | 161 | l.u.line_no = content[0].line_or_addr.u.line_no; |
c3bd716f TT |
162 | if (l.u.line_no <= 0) |
163 | l.u.line_no = 1; | |
27229e99 | 164 | |
362c05fe | 165 | print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0); |
c906108c | 166 | } |
98427f35 | 167 | } |
b73dd877 | 168 | |
c2cd8994 TT |
169 | bool |
170 | tui_source_window::location_matches_p (struct bp_location *loc, int line_no) | |
171 | { | |
172 | return (content[line_no].line_or_addr.loa == LOA_LINE | |
173 | && content[line_no].line_or_addr.u.line_no == loc->line_number | |
174 | && loc->symtab != NULL | |
7226433c | 175 | && filename_cmp (m_fullname.get (), |
c2cd8994 TT |
176 | symtab_to_fullname (loc->symtab)) == 0); |
177 | } | |
a54700c6 | 178 | |
c9033fe8 TT |
179 | /* See tui-source.h. */ |
180 | ||
181 | bool | |
182 | tui_source_window::line_is_displayed (int line) const | |
183 | { | |
184 | bool is_displayed = false; | |
185 | int threshold = SCROLL_THRESHOLD; | |
186 | int i = 0; | |
187 | while (i < content.size () - threshold && !is_displayed) | |
188 | { | |
189 | is_displayed | |
190 | = (content[i].line_or_addr.loa == LOA_LINE | |
191 | && content[i].line_or_addr.u.line_no == line); | |
192 | i++; | |
193 | } | |
194 | ||
195 | return is_displayed; | |
196 | } | |
197 | ||
a54700c6 TT |
198 | void |
199 | tui_source_window::maybe_update (struct frame_info *fi, symtab_and_line sal, | |
200 | int line_no, CORE_ADDR addr) | |
201 | { | |
202 | int start_line = (line_no - (viewport_height / 2)) + 1; | |
203 | if (start_line <= 0) | |
204 | start_line = 1; | |
205 | ||
206 | bool source_already_displayed = (sal.symtab != 0 | |
7226433c | 207 | && showing_source_p (m_fullname.get ())); |
a54700c6 TT |
208 | |
209 | struct tui_line_or_address l; | |
210 | ||
211 | l.loa = LOA_LINE; | |
212 | l.u.line_no = start_line; | |
213 | if (!(source_already_displayed | |
c9033fe8 | 214 | && line_is_displayed (line_no))) |
017f9828 | 215 | update_source_window (get_frame_arch (fi), sal.symtab, l); |
a54700c6 TT |
216 | else |
217 | { | |
218 | l.u.line_no = line_no; | |
219 | set_is_exec_point_at (l); | |
220 | } | |
221 | } |