/* TUI display source window.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include <math.h>
#include <ctype.h>
#include "symtab.h"
#include "frame.h"
#include "breakpoint.h"
#include "source.h"
-#include "symtab.h"
+#include "objfiles.h"
+#include "filenames.h"
+#include "source-cache.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
+#include "tui/tui-io.h"
#include "tui/tui-stack.h"
+#include "tui/tui-win.h"
#include "tui/tui-winsource.h"
#include "tui/tui-source.h"
-
-#include "gdb_string.h"
#include "gdb_curses.h"
/* Function to display source in the source window. */
-enum tui_status
-tui_set_source_content (struct symtab *s, int line_no, int noerror)
+bool
+tui_source_window::set_contents (struct gdbarch *arch,
+ const struct symtab_and_line &sal)
{
- enum tui_status ret = TUI_FAILURE;
+ struct symtab *s = sal.symtab;
+ int line_no = sal.line;
- if (s != (struct symtab *) NULL && s->filename != (char *) NULL)
- {
- FILE *stream;
- int i, desc, c, line_width, nlines;
- char *src_line = 0;
+ if (s == NULL)
+ return false;
- if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS)
- {
- line_width = TUI_SRC_WIN->generic.width - 1;
- /* Take hilite (window border) into account, when
- calculating the number of lines. */
- nlines = (line_no + (TUI_SRC_WIN->generic.height - 2)) - line_no;
- desc = open_source_file (s);
- if (desc < 0)
- {
- if (!noerror)
- {
- char *name = alloca (strlen (s->filename) + 100);
- sprintf (name, "%s:%d", s->filename, line_no);
- print_sys_errmsg (name, errno);
- }
- ret = TUI_FAILURE;
- }
- else
- {
- if (s->line_charpos == 0)
- find_source_lines (s, desc);
-
- if (line_no < 1 || line_no > s->nlines)
- {
- close (desc);
- printf_unfiltered (
- "Line number %d out of range; %s has %d lines.\n",
- line_no, s->filename, s->nlines);
- }
- else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0)
- {
- close (desc);
- perror_with_name (s->filename);
- }
- else
- {
- int offset, cur_line_no, cur_line, cur_len, threshold;
- struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
- struct tui_source_info *src = &TUI_SRC_WIN->detail.source_info;
-
- if (TUI_SRC_WIN->generic.title)
- xfree (TUI_SRC_WIN->generic.title);
- TUI_SRC_WIN->generic.title = xstrdup (s->filename);
-
- if (src->filename)
- xfree (src->filename);
- src->filename = xstrdup (s->filename);
-
- /* Determine the threshold for the length of the
- line and the offset to start the display. */
- offset = src->horizontal_offset;
- threshold = (line_width - 1) + offset;
- stream = fdopen (desc, FOPEN_RT);
- clearerr (stream);
- cur_line = 0;
- src->start_line_or_addr.loa = LOA_LINE;
- cur_line_no = src->start_line_or_addr.u.line_no = line_no;
- if (offset > 0)
- src_line = (char *) xmalloc (
- (threshold + 1) * sizeof (char));
- while (cur_line < nlines)
- {
- struct tui_win_element *element = (struct tui_win_element *)
- TUI_SRC_WIN->generic.content[cur_line];
-
- /* Get the first character in the line. */
- c = fgetc (stream);
-
- if (offset == 0)
- src_line = ((struct tui_win_element *)
- TUI_SRC_WIN->generic.content[
- cur_line])->which_element.source.line;
- /* Init the line with the line number. */
- sprintf (src_line, "%-6d", cur_line_no);
- cur_len = strlen (src_line);
- i = cur_len -
- ((cur_len / tui_default_tab_len ()) * tui_default_tab_len ());
- while (i < tui_default_tab_len ())
- {
- src_line[cur_len] = ' ';
- i++;
- cur_len++;
- }
- src_line[cur_len] = (char) 0;
-
- /* Set whether element is the execution point
- and whether there is a break point on it. */
- element->which_element.source.line_or_addr.loa =
- LOA_LINE;
- element->which_element.source.line_or_addr.u.line_no =
- cur_line_no;
- element->which_element.source.is_exec_point =
- (strcmp (((struct tui_win_element *)
- locator->content[0])->which_element.locator.file_name,
- s->filename) == 0
- && cur_line_no == ((struct tui_win_element *)
- locator->content[0])->which_element.locator.line_no);
- if (c != EOF)
- {
- i = strlen (src_line) - 1;
- do
- {
- if ((c != '\n') &&
- (c != '\r') && (++i < threshold))
- {
- if (c < 040 && c != '\t')
- {
- src_line[i++] = '^';
- src_line[i] = c + 0100;
- }
- else if (c == 0177)
- {
- src_line[i++] = '^';
- src_line[i] = '?';
- }
- else
- { /* Store the charcter in the
- line buffer. If it is a tab,
- then translate to the correct
- number of chars so we don't
- overwrite our buffer. */
- if (c == '\t')
- {
- int j, max_tab_len = tui_default_tab_len ();
-
- for (j = i - (
- (i / max_tab_len) * max_tab_len);
- ((j < max_tab_len) &&
- i < threshold);
- i++, j++)
- src_line[i] = ' ';
- i--;
- }
- else
- src_line[i] = c;
- }
- src_line[i + 1] = 0;
- }
- else
- { /* If we have not reached EOL, then
- eat chars until we do. */
- while (c != EOF && c != '\n' && c != '\r')
- c = fgetc (stream);
- /* Handle non-'\n' end-of-line. */
- if (c == '\r' &&
- (c = fgetc (stream)) != '\n' && c != EOF)
- {
- ungetc (c, stream);
- c = '\r';
- }
-
- }
- }
- while (c != EOF && c != '\n' && c != '\r' &&
- i < threshold && (c = fgetc (stream)));
- }
- /* Now copy the line taking the offset into
- account. */
- if (strlen (src_line) > offset)
- strcpy (((struct tui_win_element *) TUI_SRC_WIN->generic.content[
- cur_line])->which_element.source.line,
- &src_line[offset]);
- else
- ((struct tui_win_element *)
- TUI_SRC_WIN->generic.content[
- cur_line])->which_element.source.line[0] = (char) 0;
- cur_line++;
- cur_line_no++;
- }
- if (offset > 0)
- xfree (src_line);
- fclose (stream);
- TUI_SRC_WIN->generic.content_size = nlines;
- ret = TUI_SUCCESS;
- }
- }
- }
- }
- return ret;
-}
+ int line_width, nlines;
+ line_width = width - TUI_EXECINFO_SIZE - 1;
+ /* Take hilite (window border) into account, when
+ calculating the number of lines. */
+ nlines = (line_no + (height - 2)) - line_no;
-/* elz: This function sets the contents of the source window to empty
- except for a line in the middle with a warning message about the
- source not being available. This function is called by
- tui_erase_source_contents(), which in turn is invoked when the
- source files cannot be accessed. */
+ std::string srclines;
+ const std::vector<off_t> *offsets;
+ if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines,
+ &srclines)
+ || !g_source_cache.get_line_charpos (s, &offsets))
+ return false;
-void
-tui_set_source_content_nil (struct tui_win_info *win_info, char *warning_string)
-{
- int line_width;
- int n_lines;
- int curr_line = 0;
+ int cur_line_no, cur_line;
+ struct tui_locator_window *locator
+ = tui_locator_win_info_ptr ();
+ const char *s_filename = symtab_to_filename_for_display (s);
+
+ title = s_filename;
+
+ m_fullname = make_unique_xstrdup (symtab_to_fullname (s));
- line_width = win_info->generic.width - 1;
- n_lines = win_info->generic.height - 2;
+ cur_line = 0;
+ gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
+ start_line_or_addr.loa = LOA_LINE;
+ cur_line_no = start_line_or_addr.u.line_no = line_no;
- /* Set to empty each line in the window, except for the one which
- contains the message. */
- while (curr_line < win_info->generic.content_size)
+ int digits = 0;
+ if (compact_source)
{
- /* Set the information related to each displayed line to null:
- i.e. the line number is 0, there is no bp, it is not where
- the program is stopped. */
-
- struct tui_win_element *element =
- (struct tui_win_element *) win_info->generic.content[curr_line];
- element->which_element.source.line_or_addr.loa = LOA_LINE;
- element->which_element.source.line_or_addr.u.line_no = 0;
- element->which_element.source.is_exec_point = FALSE;
- element->which_element.source.has_break = FALSE;
-
- /* Set the contents of the line to blank. */
- element->which_element.source.line[0] = (char) 0;
-
- /* If the current line is in the middle of the screen, then we
- want to display the 'no source available' message in it.
- Note: the 'weird' arithmetic with the line width and height
- comes from the function tui_erase_source_content(). We need
- to keep the screen and the window's actual contents in
- synch. */
-
- if (curr_line == (n_lines / 2 + 1))
- {
- int i;
- int xpos;
- int warning_length = strlen (warning_string);
- char *src_line;
+ /* Solaris 11+gcc 5.5 has ambiguous overloads of log10, so we
+ cast to double to get the right one. */
+ double l = log10 ((double) offsets->size ());
+ digits = 1 + (int) l;
+ }
- src_line = element->which_element.source.line;
+ const char *iter = srclines.c_str ();
+ content.resize (nlines);
+ while (cur_line < nlines)
+ {
+ struct tui_source_element *element
+ = &content[cur_line];
+
+ std::string text;
+ if (*iter != '\0')
+ text = tui_copy_source_line (&iter, cur_line_no,
+ horizontal_offset,
+ line_width, digits);
+
+ /* Set whether element is the execution point
+ and whether there is a break point on it. */
+ element->line_or_addr.loa = LOA_LINE;
+ element->line_or_addr.u.line_no = cur_line_no;
+ element->is_exec_point
+ = (filename_cmp (locator->full_name.c_str (),
+ symtab_to_fullname (s)) == 0
+ && cur_line_no == locator->line_no);
+
+ content[cur_line].line = std::move (text);
+
+ cur_line++;
+ cur_line_no++;
+ }
- if (warning_length >= ((line_width - 1) / 2))
- xpos = 1;
- else
- xpos = (line_width - 1) / 2 - warning_length;
+ return true;
+}
- for (i = 0; i < xpos; i++)
- src_line[i] = ' ';
- sprintf (src_line + i, "%s", warning_string);
+/* Answer whether the source is currently displayed in the source
+ window. */
+bool
+tui_source_window::showing_source_p (const char *fullname) const
+{
+ return (!content.empty ()
+ && (filename_cmp (tui_locator_win_info_ptr ()->full_name.c_str (),
+ fullname) == 0));
+}
- for (i = xpos + warning_length; i < line_width; i++)
- src_line[i] = ' ';
- src_line[i] = '\n';
+/* Scroll the source forward or backward vertically. */
+void
+tui_source_window::do_scroll_vertical (int num_to_scroll)
+{
+ if (!content.empty ())
+ {
+ struct symtab *s;
+ struct symtab_and_line cursal = get_current_source_symtab_and_line ();
+ struct gdbarch *arch = gdbarch;
- } /* end if */
+ if (cursal.symtab == NULL)
+ {
+ struct frame_info *fi = get_selected_frame (NULL);
+ s = find_pc_line_symtab (get_frame_pc (fi));
+ arch = get_frame_arch (fi);
+ }
+ else
+ s = cursal.symtab;
- curr_line++;
+ int line_no = start_line_or_addr.u.line_no + num_to_scroll;
+ const std::vector<off_t> *offsets;
+ if (g_source_cache.get_line_charpos (s, &offsets)
+ && line_no > offsets->size ())
+ line_no = start_line_or_addr.u.line_no;
+ if (line_no <= 0)
+ line_no = 1;
- } /* end while */
+ cursal.line = line_no;
+ update_source_window (arch, cursal);
+ }
}
-
-/* Function to display source in the source window. This function
- initializes the horizontal scroll to 0. */
-void
-tui_show_symtab_source (struct symtab *s, struct tui_line_or_address line, int noerror)
+bool
+tui_source_window::location_matches_p (struct bp_location *loc, int line_no)
{
- TUI_SRC_WIN->detail.source_info.horizontal_offset = 0;
- tui_update_source_window_as_is (TUI_SRC_WIN, s, line, noerror);
+ return (content[line_no].line_or_addr.loa == LOA_LINE
+ && content[line_no].line_or_addr.u.line_no == loc->line_number
+ && loc->symtab != NULL
+ && filename_cmp (m_fullname.get (),
+ symtab_to_fullname (loc->symtab)) == 0);
}
+/* See tui-source.h. */
-/* Answer whether the source is currently displayed in the source
- window. */
-int
-tui_source_is_displayed (char *fname)
+bool
+tui_source_window::line_is_displayed (int line) const
{
- return (TUI_SRC_WIN->generic.content_in_use &&
- (strcmp (((struct tui_win_element *) (tui_locator_win_info_ptr ())->
- content[0])->which_element.locator.file_name, fname) == 0));
-}
+ if (content.size () < SCROLL_THRESHOLD)
+ return false;
+ for (size_t i = 0; i < content.size () - SCROLL_THRESHOLD; ++i)
+ {
+ if (content[i].line_or_addr.loa == LOA_LINE
+ && content[i].line_or_addr.u.line_no == line)
+ return true;
+ }
+
+ return false;
+}
-/* Scroll the source forward or backward vertically. */
void
-tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction,
- int num_to_scroll)
+tui_source_window::maybe_update (struct frame_info *fi, symtab_and_line sal)
{
- if (TUI_SRC_WIN->generic.content != NULL)
+ int start_line = (sal.line - ((height - 2) / 2)) + 1;
+ if (start_line <= 0)
+ start_line = 1;
+
+ bool source_already_displayed = (sal.symtab != 0
+ && showing_source_p (m_fullname.get ()));
+
+ if (!(source_already_displayed && line_is_displayed (sal.line)))
+ {
+ sal.line = start_line;
+ update_source_window (get_frame_arch (fi), sal);
+ }
+ else
{
struct tui_line_or_address l;
- struct symtab *s;
- tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content;
- struct symtab_and_line cursal = get_current_source_symtab_and_line ();
-
- if (cursal.symtab == (struct symtab *) NULL)
- s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
- else
- s = cursal.symtab;
l.loa = LOA_LINE;
- if (scroll_direction == FORWARD_SCROLL)
- {
- l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
- + num_to_scroll;
- if (l.u.line_no > s->nlines)
- /* line = s->nlines - win_info->generic.content_size + 1; */
- /* elz: fix for dts 23398. */
- l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no;
- }
- else
- {
- l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
- - num_to_scroll;
- if (l.u.line_no <= 0)
- l.u.line_no = 1;
- }
-
- print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0);
+ l.u.line_no = sal.line;
+ set_is_exec_point_at (l);
}
}
projects / deliverable / binutils-gdb.git / blobdiff