1 /* TUI data manipulation routines.
3 Copyright (C) 1998-2019 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/>. */
22 #ifndef TUI_TUI_DATA_H
23 #define TUI_TUI_DATA_H
25 #include "tui/tui.h" /* For enum tui_win_type. */
26 #include "gdb_curses.h" /* For WINDOW. */
27 #include "observable.h"
29 /* This is a point definition. */
35 /* Generic window information. */
36 struct tui_gen_win_info
40 explicit tui_gen_win_info (enum tui_win_type t)
47 virtual ~tui_gen_win_info ();
49 /* Call to refresh this window. */
50 virtual void refresh_window ();
52 /* Make this window visible or invisible. */
53 virtual void make_visible (bool visible);
55 /* Return the name of this type of window. */
56 virtual const char *name () const
61 /* Reset this window. WIN_TYPE must match the existing type of this
62 window (it is only passed for self-test purposes). The other
63 parameters are used to set the window's size and position. */
64 void reset (enum tui_win_type win_type,
65 int height, int width,
66 int origin_x, int origin_y);
69 WINDOW *handle = nullptr;
71 enum tui_win_type type;
76 /* Origin of window. */
77 struct tui_point origin = {0, 0};
78 /* Viewport height. */
79 int viewport_height = 0;
80 /* Index of last visible line. */
81 int last_visible_line = 0;
82 /* Whether the window is visible or not. */
83 bool is_visible = false;
84 /* Window title to display. */
85 char *title = nullptr;
88 /* Whether or not a window should be drawn with a box. */
95 /* Constant definitions. */
96 #define DEFAULT_TAB_LEN 8
97 #define NO_SRC_STRING "[ No Source Available ]"
98 #define NO_DISASSEM_STRING "[ No Assembly Available ]"
99 #define NO_REGS_STRING "[ Register Values Unavailable ]"
100 #define NO_DATA_STRING "[ No Data Values Displayed ]"
101 #define MAX_CONTENT_COUNT 100
102 #define SRC_NAME "src"
103 #define CMD_NAME "cmd"
104 #define DATA_NAME "regs"
105 #define DISASSEM_NAME "asm"
106 #define TUI_NULL_STR ""
107 #define DEFAULT_HISTORY_COUNT 25
109 #define NO_HILITE FALSE
110 #define WITH_LOCATOR TRUE
111 #define NO_LOCATOR FALSE
112 #define UNDEFINED_ITEM -1
113 #define MIN_WIN_HEIGHT 3
114 #define MIN_CMD_WIN_HEIGHT 3
116 /* Strings to display in the TUI status line. */
117 #define PROC_PREFIX "In: "
118 #define LINE_PREFIX "L"
119 #define PC_PREFIX "PC: "
120 #define SINGLE_KEY "(SingleKey)"
122 /* Minimum/Maximum length of some fields displayed in the TUI status
124 #define MIN_LINE_WIDTH 4 /* Use at least 4 digits for line
126 #define MIN_PROC_WIDTH 12
127 #define MAX_TARGET_WIDTH 10
128 #define MAX_PID_WIDTH 19
130 /* The kinds of layouts available. */
135 SRC_DISASSEM_COMMAND,
137 DISASSEM_DATA_COMMAND,
141 enum tui_line_or_address_kind
147 /* Structure describing source line or line address. */
148 struct tui_line_or_address
150 enum tui_line_or_address_kind loa;
158 /* Current Layout definition. */
159 struct tui_layout_def
161 enum tui_win_type display_mode;
164 /* Flags to tell what kind of breakpoint is at current line. */
167 TUI_BP_ENABLED = 0x01,
168 TUI_BP_DISABLED = 0x02,
170 TUI_BP_CONDITIONAL = 0x08,
171 TUI_BP_HARDWARE = 0x10
174 DEF_ENUM_FLAGS_TYPE (enum tui_bp_flag, tui_bp_flags);
176 /* Elements in the Source/Disassembly Window. */
177 struct tui_source_element
179 tui_source_element ()
181 line_or_addr.loa = LOA_LINE;
182 line_or_addr.u.line_no = 0;
185 ~tui_source_element ()
190 char *line = nullptr;
191 struct tui_line_or_address line_or_addr;
192 bool is_exec_point = false;
193 tui_bp_flags break_mode = 0;
198 # define MAX_LOCATOR_ELEMENT_LEN PATH_MAX
200 # define MAX_LOCATOR_ELEMENT_LEN 1024
203 /* Position of breakpoint markers in the exec info string. */
204 #define TUI_BP_HIT_POS 0
205 #define TUI_BP_BREAK_POS 1
206 #define TUI_EXEC_POS 2
207 #define TUI_EXECINFO_SIZE 4
209 typedef char tui_exec_info_content[TUI_EXECINFO_SIZE];
211 /* Execution info window class. */
213 struct tui_exec_info_window : public tui_gen_win_info
215 tui_exec_info_window ()
216 : tui_gen_win_info (EXEC_INFO_WIN)
220 ~tui_exec_info_window () override
225 /* Get or allocate contents. */
226 tui_exec_info_content *maybe_allocate_content (int n_elements);
228 /* Return the contents. */
229 const tui_exec_info_content *get_content () const
236 tui_exec_info_content *m_content = nullptr;
239 /* Locator window class. */
241 struct tui_locator_window : public tui_gen_win_info
243 tui_locator_window ()
244 : tui_gen_win_info (LOCATOR_WIN)
250 char full_name[MAX_LOCATOR_ELEMENT_LEN];
251 char proc_name[MAX_LOCATOR_ELEMENT_LEN];
254 /* Architecture associated with code at this location. */
255 struct gdbarch *gdbarch = nullptr;
258 /* A data item window. */
260 struct tui_data_item_window : public tui_gen_win_info
262 tui_data_item_window ()
263 : tui_gen_win_info (DATA_ITEM_WIN)
267 ~tui_data_item_window () override;
269 const char *name = nullptr;
270 /* The register number, or data display number. */
271 int item_no = UNDEFINED_ITEM;
272 void *value = nullptr;
273 bool highlight = false;
274 char *content = nullptr;
277 /* This defines information about each logical window. */
278 struct tui_win_info : public tui_gen_win_info
282 explicit tui_win_info (enum tui_win_type type);
283 DISABLE_COPY_AND_ASSIGN (tui_win_info);
285 /* Scroll the contents vertically. This is only called via
286 forward_scroll and backward_scroll. */
287 virtual void do_scroll_vertical (int num_to_scroll) = 0;
289 /* Scroll the contents horizontally. This is only called via
290 left_scroll and right_scroll. */
291 virtual void do_scroll_horizontal (int num_to_scroll) = 0;
293 /* Called after make_visible_with_new_height sets the new height.
294 Should update the window. */
295 virtual void do_make_visible_with_new_height () = 0;
299 ~tui_win_info () override
303 /* Clear the pertinent detail in the window. */
304 virtual void clear_detail () = 0;
306 /* Return true if this window has the locator. */
307 virtual bool has_locator () const
312 /* Refresh this window and any associated windows. */
313 virtual void refresh ();
315 /* Called after all the TUI windows are refreshed, to let this
316 window have a chance to update itself further. */
317 virtual void refresh_all ()
321 /* Called after a TUI window is given a new height; this updates any
322 related auxiliary windows. */
323 virtual void set_new_height (int height)
327 /* Compute the maximum height of this window. */
328 virtual int max_height () const;
330 /* Called after the tab width has been changed. */
331 virtual void update_tab_width ()
335 /* Make the window visible after the height has been changed. */
336 void make_visible_with_new_height ();
338 /* Set whether this window is highglighted. */
339 void set_highlight (bool highlight)
341 is_highlighted = highlight;
344 /* Methods to scroll the contents of this window. Note that they
345 are named with "_scroll" coming at the end because the more
346 obvious "scroll_forward" is defined as a macro in term.h. */
347 void forward_scroll (int num_to_scroll);
348 void backward_scroll (int num_to_scroll);
349 void left_scroll (int num_to_scroll);
350 void right_scroll (int num_to_scroll);
352 /* Return true if this window can be scrolled, false otherwise. */
353 virtual bool can_scroll () const
358 /* Can this window ever be highlighted? */
359 bool can_highlight = true;
361 /* Is this window highlighted? */
362 bool is_highlighted = false;
365 /* The base class for all source-like windows, namely the source and
366 disassembly windows. */
368 struct tui_source_window_base : public tui_win_info
371 explicit tui_source_window_base (enum tui_win_type type);
372 ~tui_source_window_base () override;
373 DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
375 void do_scroll_horizontal (int num_to_scroll) override;
376 void do_make_visible_with_new_height () override;
380 void clear_detail () override;
382 /* Return true if this window has the locator. */
383 bool has_locator () const override
385 return m_has_locator;
388 void make_visible (bool visible) override;
389 void refresh () override;
390 void refresh_all () override;
392 /* Refill the source window's source cache and update it. If this
393 is a disassembly window, then just update it. */
396 /* Set the location of the execution point. */
397 void set_is_exec_point_at (struct tui_line_or_address l);
399 void set_new_height (int height) override;
401 void update_tab_width () override;
403 /* Return true if the location LOC corresponds to the line number
404 LINE_NO in this source window; false otherwise. */
405 virtual bool location_matches_p (struct bp_location *loc, int line_no) = 0;
407 /* Can it be used, or is it already used? */
408 bool content_in_use = false;
409 /* Does the locator belong to this window? */
410 bool m_has_locator = false;
411 /* Execution information window. */
412 struct tui_exec_info_window *execution_info = nullptr;
413 /* Used for horizontal scroll. */
414 int horizontal_offset = 0;
415 struct tui_line_or_address start_line_or_addr;
417 /* It is the resolved form as returned by symtab_to_fullname. */
418 char *fullname = nullptr;
420 /* Architecture associated with code at this location. */
421 struct gdbarch *gdbarch = nullptr;
423 std::vector<tui_source_element> content;
426 /* A TUI source window. */
428 struct tui_source_window : public tui_source_window_base
430 tui_source_window ();
431 ~tui_source_window ();
433 DISABLE_COPY_AND_ASSIGN (tui_source_window);
435 const char *name () const override
440 bool location_matches_p (struct bp_location *loc, int line_no) override;
442 bool showing_source_p (const char *filename) const;
446 void do_scroll_vertical (int num_to_scroll) override;
450 void style_changed ();
452 /* A token used to register and unregister an observer. */
453 gdb::observers::token m_observable;
456 /* A TUI disassembly window. */
458 struct tui_disasm_window : public tui_source_window_base
461 : tui_source_window_base (DISASSEM_WIN)
465 DISABLE_COPY_AND_ASSIGN (tui_disasm_window);
467 const char *name () const override
469 return DISASSEM_NAME;
472 bool location_matches_p (struct bp_location *loc, int line_no) override;
476 void do_scroll_vertical (int num_to_scroll) override;
479 struct tui_data_window : public tui_win_info
482 : tui_win_info (DATA_WIN)
486 DISABLE_COPY_AND_ASSIGN (tui_data_window);
488 void clear_detail () override;
489 void refresh_all () override;
491 void set_new_height (int height) override;
493 void refresh_window () override;
495 const char *name () const override
500 /* Windows that are used to display registers. */
501 std::vector<std::unique_ptr<tui_data_item_window>> regs_content;
502 int regs_column_count = 0;
503 /* Should regs be displayed at all? */
504 bool display_regs = false;
505 struct reggroup *current_group = nullptr;
507 /* Answer the number of the last line in the regs display. If there
508 are no registers (-1) is returned. */
509 int last_regs_line_no () const;
511 /* Answer the line number that the register element at element_no is
512 on. If element_no is greater than the number of register
513 elements there are, -1 is returned. */
514 int line_from_reg_element_no (int element_no) const;
516 /* Answer the index of the first element in line_no. If line_no is
517 past the register area (-1) is returned. */
518 int first_reg_element_no_inline (int line_no) const;
520 /* Displays the data that is in the data window's content. It does
521 not set the content. */
522 void display_all_data ();
524 /* Delete all the item windows in the data window. This is usually
525 done when the data window is scrolled. */
526 void delete_data_content_windows ();
528 void erase_data_content (const char *prompt);
530 /* Display the registers in the content from 'start_element_no'
531 until the end of the register content or the end of the display
532 height. No checking for displaying past the end of the registers
534 void display_registers_from (int start_element_no);
536 /* Display the registers starting at line line_no in the data
537 window. Answers the line number that the display actually
538 started from. If nothing is displayed (-1) is returned. */
539 int display_registers_from_line (int line_no);
543 void do_scroll_vertical (int num_to_scroll) override;
544 void do_scroll_horizontal (int num_to_scroll) override
547 void do_make_visible_with_new_height () override;
549 /* Return the index of the first element displayed. If none are
550 displayed, then return -1. */
551 int first_data_item_displayed ();
553 /* Display the registers in the content from 'start_element_no' on
554 'start_line_no' until the end of the register content or the end
555 of the display height. This function checks that we won't
556 display off the end of the register display. */
557 void display_reg_element_at_line (int start_element_no, int start_line_no);
560 struct tui_cmd_window : public tui_win_info
563 : tui_win_info (CMD_WIN)
565 can_highlight = false;
568 DISABLE_COPY_AND_ASSIGN (tui_cmd_window);
570 void clear_detail () override;
572 void make_visible (bool visible) override
576 int max_height () const override;
578 void refresh_window () override
582 const char *name () const override
587 bool can_scroll () const override
596 void do_scroll_vertical (int num_to_scroll) override
600 void do_scroll_horizontal (int num_to_scroll) override
604 void do_make_visible_with_new_height () override;
607 extern int tui_win_is_auxiliary (enum tui_win_type win_type);
611 extern struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
613 #define TUI_SRC_WIN ((tui_source_window *) tui_win_list[SRC_WIN])
614 #define TUI_DISASM_WIN ((tui_source_window_base *) tui_win_list[DISASSEM_WIN])
615 #define TUI_DATA_WIN ((tui_data_window *) tui_win_list[DATA_WIN])
616 #define TUI_CMD_WIN ((tui_cmd_window *) tui_win_list[CMD_WIN])
618 /* An iterator that iterates over all windows. */
620 class tui_window_iterator
624 typedef tui_window_iterator self_type;
625 typedef struct tui_win_info *value_type;
626 typedef struct tui_win_info *&reference;
627 typedef struct tui_win_info **pointer;
628 typedef std::forward_iterator_tag iterator_category;
629 typedef int difference_type;
631 explicit tui_window_iterator (enum tui_win_type type)
637 tui_window_iterator ()
638 : m_type (MAX_MAJOR_WINDOWS)
642 bool operator!= (const self_type &other) const
644 return m_type != other.m_type;
647 value_type operator* () const
649 gdb_assert (m_type < MAX_MAJOR_WINDOWS);
650 return tui_win_list[m_type];
653 self_type &operator++ ()
664 while (m_type < MAX_MAJOR_WINDOWS && tui_win_list[m_type] == nullptr)
671 /* A range adapter for iterating over TUI windows. */
673 struct all_tui_windows
675 tui_window_iterator begin () const
677 return tui_window_iterator (SRC_WIN);
680 tui_window_iterator end () const
682 return tui_window_iterator ();
687 /* Data Manipulation Functions. */
688 extern void tui_initialize_static_data (void);
689 extern struct tui_win_info *tui_partial_win_by_name (const char *);
690 extern enum tui_layout_type tui_current_layout (void);
691 extern void tui_set_current_layout_to (enum tui_layout_type);
692 extern int tui_term_height (void);
693 extern void tui_set_term_height_to (int);
694 extern int tui_term_width (void);
695 extern void tui_set_term_width_to (int);
696 extern struct tui_locator_window *tui_locator_win_info_ptr (void);
697 extern std::vector<tui_source_window_base *> &tui_source_windows ();
698 extern void tui_clear_source_windows (void);
699 extern void tui_clear_source_windows_detail (void);
700 extern void tui_add_to_source_windows (struct tui_source_window_base *);
701 extern struct tui_win_info *tui_win_with_focus (void);
702 extern void tui_set_win_with_focus (struct tui_win_info *);
703 extern struct tui_layout_def *tui_layout_def (void);
704 extern int tui_win_resized (void);
705 extern void tui_set_win_resized_to (int);
707 extern struct tui_win_info *tui_next_win (struct tui_win_info *);
708 extern struct tui_win_info *tui_prev_win (struct tui_win_info *);
710 extern unsigned int tui_tab_width;
712 #endif /* TUI_TUI_DATA_H */