Introduce max_height method
[deliverable/binutils-gdb.git] / gdb / tui / tui-winsource.c
index 0f20b11e142203c2bbf449286eeb059b54199457..5946db75aaf4f0f729fa5cfa8d0fde829046b6ec 100644 (file)
@@ -1,6 +1,6 @@
 /* TUI display source/assembly window.
 
-   Copyright (C) 1998-2013 Free Software Foundation, Inc.
+   Copyright (C) 1998-2019 Free Software Foundation, Inc.
 
    Contributed by Hewlett-Packard Company.
 
 
 #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-wingeneral.h"
 #include "tui/tui-winsource.h"
 #include "tui/tui-source.h"
 #include "tui/tui-disasm.h"
-
-#include "gdb_string.h"
 #include "gdb_curses.h"
-#include "gdb_assert.h"
 
 /* Function to display the "main" routine.  */
 void
-tui_display_main (void)
+tui_display_main ()
 {
-  if ((tui_source_windows ())->count > 0)
+  if (!tui_source_windows ().empty ())
     {
       struct gdbarch *gdbarch;
       CORE_ADDR addr;
@@ -54,14 +52,14 @@ tui_display_main (void)
       tui_get_begin_asm_address (&gdbarch, &addr);
       if (addr != (CORE_ADDR) 0)
        {
-         struct symtab_and_line sal;
+         struct symtab *s;
 
          tui_update_source_windows_with_addr (gdbarch, addr);
-         sal = find_pc_line (addr, 0);
-          if (sal.symtab)
-             tui_update_locator_filename (sal.symtab->filename);
+         s = find_pc_line_symtab (addr);
+          if (s != NULL)
+             tui_update_locator_fullname (symtab_to_fullname (s));
           else
-             tui_update_locator_filename ("??");
+             tui_update_locator_fullname ("??");
        }
     }
 }
@@ -77,7 +75,8 @@ tui_update_source_window (struct tui_win_info *win_info,
                          struct tui_line_or_address line_or_addr,
                          int noerror)
 {
-  win_info->detail.source_info.horizontal_offset = 0;
+  tui_source_window_base *base = (tui_source_window_base *) win_info;
+  base->horizontal_offset = 0;
   tui_update_source_window_as_is (win_info, gdbarch, s, line_or_addr, noerror);
 
   return;
@@ -112,14 +111,13 @@ tui_update_source_window_as_is (struct tui_win_info *win_info,
       tui_update_exec_info (win_info);
       if (win_info->generic.type == SRC_WIN)
        {
-         struct symtab_and_line sal;
-         
-         init_sal (&sal);
+         symtab_and_line sal;
+
          sal.line = line_or_addr.u.line_no +
            (win_info->generic.content_size - 2);
          sal.symtab = s;
-         sal.pspace = s->objfile->pspace;
-         set_current_source_symtab_and_line (&sal);
+         sal.pspace = SYMTAB_PSPACE (s);
+         set_current_source_symtab_and_line (sal);
          /* If the focus was in the asm win, put it in the src win if
             we don't have a split layout.  */
          if (tui_win_with_focus () == TUI_DISASM_WIN
@@ -162,12 +160,8 @@ tui_update_source_windows_with_addr (struct gdbarch *gdbarch, CORE_ADDR addr)
     }
   else
     {
-      int i;
-
-      for (i = 0; i < (tui_source_windows ())->count; i++)
+      for (struct tui_source_window_base *win_info : tui_source_windows ())
        {
-         struct tui_win_info *win_info = (tui_source_windows ())->list[i];
-
          tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
          tui_clear_exec_info_content (win_info);
        }
@@ -186,7 +180,7 @@ tui_update_source_windows_with_line (struct symtab *s, int line)
   if (!s)
     return;
 
-  gdbarch = get_objfile_arch (s->objfile);
+  gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
 
   switch (tui_current_layout ())
     {
@@ -222,8 +216,7 @@ tui_clear_source_content (struct tui_win_info *win_info,
       tui_erase_source_content (win_info, display_prompt);
       for (i = 0; i < win_info->generic.content_size; i++)
        {
-         struct tui_win_element *element =
-           (struct tui_win_element *) win_info->generic.content[i];
+         struct tui_win_element *element = win_info->generic.content[i];
 
          element->which_element.source.has_break = FALSE;
          element->which_element.source.is_exec_point = FALSE;
@@ -239,13 +232,13 @@ tui_erase_source_content (struct tui_win_info *win_info,
   int x_pos;
   int half_width = (win_info->generic.width - 2) / 2;
 
-  if (win_info->generic.handle != (WINDOW *) NULL)
+  if (win_info->generic.handle != NULL)
     {
       werase (win_info->generic.handle);
       tui_check_and_display_highlight_if_needed (win_info);
       if (display_prompt == EMPTY_SOURCE_PROMPT)
        {
-         char *no_src_str;
+         const char *no_src_str;
 
          if (win_info->generic.type == SRC_WIN)
            no_src_str = NO_SRC_STRING;
@@ -258,7 +251,7 @@ tui_erase_source_content (struct tui_win_info *win_info,
          mvwaddstr (win_info->generic.handle,
                     (win_info->generic.height / 2),
                     x_pos,
-                    no_src_str);
+                    (char *) no_src_str);
 
          /* elz: Added this function call to set the real contents of
             the window to what is on the screen, so that later calls
@@ -277,23 +270,24 @@ static void
 tui_show_source_line (struct tui_win_info *win_info, int lineno)
 {
   struct tui_win_element *line;
-  int x, y;
+  int x;
 
-  line = (struct tui_win_element *) win_info->generic.content[lineno - 1];
+  line = win_info->generic.content[lineno - 1];
   if (line->which_element.source.is_exec_point)
-    wattron (win_info->generic.handle, A_STANDOUT);
+    tui_set_reverse_mode (win_info->generic.handle, true);
 
-  mvwaddstr (win_info->generic.handle, lineno, 1,
-             line->which_element.source.line);
+  wmove (win_info->generic.handle, lineno, 1);
+  tui_puts (line->which_element.source.line,
+           win_info->generic.handle);
   if (line->which_element.source.is_exec_point)
-    wattroff (win_info->generic.handle, A_STANDOUT);
+    tui_set_reverse_mode (win_info->generic.handle, false);
 
   /* Clear to end of line but stop before the border.  */
-  getyx (win_info->generic.handle, y, x);
+  x = getcurx (win_info->generic.handle);
   while (x + 1 < win_info->generic.width)
     {
       waddch (win_info->generic.handle, ' ');
-      getyx (win_info->generic.handle, y, x);
+      x = getcurx (win_info->generic.handle);
     }
 }
 
@@ -315,48 +309,48 @@ tui_show_source_content (struct tui_win_info *win_info)
   win_info->generic.content_in_use = TRUE;
 }
 
+/* See tui-data.h.  */
 
-/* Scroll the source forward or backward horizontally.  */
 void
-tui_horizontal_source_scroll (struct tui_win_info *win_info,
-                             enum tui_scroll_direction direction,
-                             int num_to_scroll)
+tui_source_window_base::refill ()
 {
-  if (win_info->generic.content != NULL)
+  symtab *s = nullptr;
+
+  if (generic.type == SRC_WIN)
     {
-      struct gdbarch *gdbarch = win_info->detail.source_info.gdbarch;
-      int offset;
-      struct symtab *s = NULL;
+      symtab_and_line cursal = get_current_source_symtab_and_line ();
+      s = (cursal.symtab == NULL
+          ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)))
+          : cursal.symtab);
+    }
 
-      if (win_info->generic.type == SRC_WIN)
-       {
-         struct symtab_and_line cursal
-           = get_current_source_symtab_and_line ();
+  tui_update_source_window_as_is (this, gdbarch, s,
+                                 generic.content[0]
+                                   ->which_element.source.line_or_addr,
+                                 FALSE);
+}
 
-         if (cursal.symtab == NULL)
-           s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
-         else
-           s = cursal.symtab;
-       }
+/* Scroll the source forward or backward horizontally.  */
+
+void
+tui_source_window_base::do_scroll_horizontal
+  (enum tui_scroll_direction direction, int num_to_scroll)
+{
+  if (generic.content != NULL)
+    {
+      int offset;
 
       if (direction == LEFT_SCROLL)
-       offset = win_info->detail.source_info.horizontal_offset
-         + num_to_scroll;
+       offset = horizontal_offset + num_to_scroll;
       else
        {
-         offset = win_info->detail.source_info.horizontal_offset
-           - num_to_scroll;
+         offset = horizontal_offset - num_to_scroll;
          if (offset < 0)
            offset = 0;
        }
-      win_info->detail.source_info.horizontal_offset = offset;
-      tui_update_source_window_as_is (win_info, gdbarch, s,
-                                     ((struct tui_win_element *)
-                                      win_info->generic.content[0])->which_element.source.line_or_addr,
-                                     FALSE);
+      horizontal_offset = offset;
+      refill ();
     }
-
-  return;
 }
 
 
@@ -364,15 +358,14 @@ tui_horizontal_source_scroll (struct tui_win_info *win_info,
    line_no.  */
 
 void
-tui_set_is_exec_point_at (struct tui_line_or_address l, 
-                         struct tui_win_info *win_info)
+tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l)
 {
   int changed = 0;
   int i;
-  tui_win_content content = (tui_win_content) win_info->generic.content;
+  tui_win_content content = generic.content;
 
   i = 0;
-  while (i < win_info->generic.content_size)
+  while (i < generic.content_size)
     {
       int new_state;
       struct tui_line_or_address content_loa =
@@ -391,27 +384,22 @@ tui_set_is_exec_point_at (struct tui_line_or_address l,
         {
           changed++;
           content[i]->which_element.source.is_exec_point = new_state;
-          tui_show_source_line (win_info, i + 1);
+          tui_show_source_line (this, i + 1);
         }
       i++;
     }
   if (changed)
-    tui_refresh_win (&win_info->generic);
+    refill ();
 }
 
 /* Update the execution windows to show the active breakpoints.
    This is called whenever a breakpoint is inserted, removed or
    has its state changed.  */
 void
-tui_update_all_breakpoint_info (void)
+tui_update_all_breakpoint_info ()
 {
-  struct tui_list *list = tui_source_windows ();
-  int i;
-
-  for (i = 0; i < list->count; i++)
+  for (tui_source_window_base *win : tui_source_windows ())
     {
-      struct tui_win_info *win = list->list[i];
-
       if (tui_update_breakpoint_info (win, FALSE))
         {
           tui_update_exec_info (win);
@@ -432,7 +420,7 @@ tui_update_breakpoint_info (struct tui_win_info *win,
 {
   int i;
   int need_refresh = 0;
-  struct tui_source_info *src = &win->detail.source_info;
+  tui_source_window_base *src = (tui_source_window_base *) win;
 
   for (i = 0; i < win->generic.content_size; i++)
     {
@@ -441,8 +429,7 @@ tui_update_breakpoint_info (struct tui_win_info *win,
       int mode;
       struct tui_source_element *line;
 
-      line = &((struct tui_win_element *)
-              win->generic.content[i])->which_element.source;
+      line = &win->generic.content[i]->which_element.source;
       if (current_only && !line->is_exec_point)
          continue;
 
@@ -451,7 +438,7 @@ tui_update_breakpoint_info (struct tui_win_info *win,
          those that we already hit.  */
       mode = 0;
       for (bp = breakpoint_chain;
-           bp != (struct breakpoint *) NULL;
+           bp != NULL;
            bp = bp->next)
         {
          struct bp_location *loc;
@@ -462,8 +449,9 @@ tui_update_breakpoint_info (struct tui_win_info *win,
          for (loc = bp->loc; loc != NULL; loc = loc->next)
            {
              if ((win == TUI_SRC_WIN
-                  && loc->source_file
-                  && (filename_cmp (src->filename, loc->source_file) == 0)
+                  && loc->symtab != NULL
+                  && filename_cmp (src->fullname,
+                                   symtab_to_fullname (loc->symtab)) == 0
                   && line->line_or_addr.loa == LOA_LINE
                   && loc->line_number == line->line_or_addr.u.line_no)
                  || (win == TUI_DISASM_WIN
@@ -501,16 +489,14 @@ tui_set_exec_info_content (struct tui_win_info *win_info)
 {
   enum tui_status ret = TUI_SUCCESS;
 
-  if (win_info->detail.source_info.execution_info
-      != (struct tui_gen_win_info *) NULL)
+  tui_source_window_base *base = (tui_source_window_base *) win_info;
+  if (base->execution_info != NULL)
     {
-      struct tui_gen_win_info *exec_info_ptr
-       = win_info->detail.source_info.execution_info;
+      struct tui_gen_win_info *exec_info_ptr = base->execution_info;
 
       if (exec_info_ptr->content == NULL)
        exec_info_ptr->content =
-         (void **) tui_alloc_content (win_info->generic.height,
-                                        exec_info_ptr->type);
+         tui_alloc_content (win_info->generic.height, exec_info_ptr->type);
       if (exec_info_ptr->content != NULL)
        {
          int i;
@@ -522,9 +508,8 @@ tui_set_exec_info_content (struct tui_win_info *win_info)
              struct tui_win_element *src_element;
               int mode;
 
-             element = (struct tui_win_element *) exec_info_ptr->content[i];
-             src_element = (struct tui_win_element *)
-               win_info->generic.content[i];
+             element = exec_info_ptr->content[i];
+             src_element = win_info->generic.content[i];
 
               memset(element->which_element.simple_string, ' ',
                      sizeof(element->which_element.simple_string));
@@ -561,8 +546,8 @@ tui_set_exec_info_content (struct tui_win_info *win_info)
 void
 tui_show_exec_info_content (struct tui_win_info *win_info)
 {
-  struct tui_gen_win_info *exec_info
-    = win_info->detail.source_info.execution_info;
+  tui_source_window_base *base = (tui_source_window_base *) win_info;
+  struct tui_gen_win_info *exec_info = base->execution_info;
   int cur_line;
 
   werase (exec_info->handle);
@@ -571,8 +556,8 @@ tui_show_exec_info_content (struct tui_win_info *win_info)
     mvwaddstr (exec_info->handle,
               cur_line,
               0,
-              ((struct tui_win_element *)
-               exec_info->content[cur_line - 1])->which_element.simple_string);
+              (char *) exec_info->content[cur_line - 1]
+                         ->which_element.simple_string);
   tui_refresh_win (exec_info);
   exec_info->content_in_use = TRUE;
 }
@@ -581,8 +566,8 @@ tui_show_exec_info_content (struct tui_win_info *win_info)
 void
 tui_erase_exec_info_content (struct tui_win_info *win_info)
 {
-  struct tui_gen_win_info *exec_info
-    = win_info->detail.source_info.execution_info;
+  tui_source_window_base *base = (tui_source_window_base *) win_info;
+  struct tui_gen_win_info *exec_info = base->execution_info;
 
   werase (exec_info->handle);
   tui_refresh_win (exec_info);
@@ -591,7 +576,8 @@ tui_erase_exec_info_content (struct tui_win_info *win_info)
 void
 tui_clear_exec_info_content (struct tui_win_info *win_info)
 {
-  win_info->detail.source_info.execution_info->content_in_use = FALSE;
+  tui_source_window_base *base = (tui_source_window_base *) win_info;
+  base->execution_info->content_in_use = FALSE;
   tui_erase_exec_info_content (win_info);
 
   return;
@@ -608,41 +594,21 @@ tui_update_exec_info (struct tui_win_info *win_info)
 enum tui_status
 tui_alloc_source_buffer (struct tui_win_info *win_info)
 {
-  char *src_line_buf;
   int i, line_width, max_lines;
 
-  max_lines = win_info->generic.height;        /* Less the highlight box.  */
-  line_width = win_info->generic.width - 1;
-  /*
-   * Allocate the buffer for the source lines.  Do this only once
-   * since they will be re-used for all source displays.  The only
-   * other time this will be done is when a window's size changes.
-   */
+  /* The window width/height includes the highlight box.  Determine actual
+     content dimensions, including string null-terminators.  */
+  max_lines = win_info->generic.height - 2;
+  line_width = win_info->generic.width - 2 + 1;
+
+  /* Allocate the buffer for the source lines.  */
   if (win_info->generic.content == NULL)
     {
-      src_line_buf = (char *) 
-       xmalloc ((max_lines * line_width) * sizeof (char));
-      if (src_line_buf == (char *) NULL)
-       {
-         fputs_unfiltered ("Unable to Allocate Memory for "
-                           "Source or Disassembly Display.\n",
-                           gdb_stderr);
-         return TUI_FAILURE;
-       }
       /* Allocate the content list.  */
-      if ((win_info->generic.content =
-          (void **) tui_alloc_content (max_lines, SRC_WIN)) == NULL)
-       {
-         xfree (src_line_buf);
-         fputs_unfiltered ("Unable to Allocate Memory for "
-                           "Source or Disassembly Display.\n",
-                           gdb_stderr);
-         return TUI_FAILURE;
-       }
+      win_info->generic.content = tui_alloc_content (max_lines, SRC_WIN);
       for (i = 0; i < max_lines; i++)
-       ((struct tui_win_element *)
-        win_info->generic.content[i])->which_element.source.line =
-         src_line_buf + (line_width * i);
+       win_info->generic.content[i]->which_element.source.line
+         = (char *) xmalloc (line_width);
     }
 
   return TUI_SUCCESS;
@@ -667,12 +633,11 @@ tui_line_is_displayed (int line,
   while (i < win_info->generic.content_size - threshold
         && !is_displayed)
     {
-      is_displayed = (((struct tui_win_element *)
-                      win_info->generic.content[i])->which_element.source.line_or_addr.loa
-                     == LOA_LINE)
-       && (((struct tui_win_element *)
-            win_info->generic.content[i])->which_element.source.line_or_addr.u.line_no
-           == (int) line);
+      is_displayed
+       = win_info->generic.content[i]
+           ->which_element.source.line_or_addr.loa == LOA_LINE
+         && win_info->generic.content[i]
+              ->which_element.source.line_or_addr.u.line_no == line;
       i++;
     }
 
@@ -698,12 +663,11 @@ tui_addr_is_displayed (CORE_ADDR addr,
   while (i < win_info->generic.content_size - threshold
         && !is_displayed)
     {
-      is_displayed = (((struct tui_win_element *)
-                      win_info->generic.content[i])->which_element.source.line_or_addr.loa
-                     == LOA_ADDRESS)
-       && (((struct tui_win_element *)
-            win_info->generic.content[i])->which_element.source.line_or_addr.u.addr
-           == addr);
+      is_displayed
+       = win_info->generic.content[i]
+           ->which_element.source.line_or_addr.loa == LOA_ADDRESS
+         && win_info->generic.content[i]
+              ->which_element.source.line_or_addr.u.addr == addr;
       i++;
     }
 
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