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 virtual 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 SRC_NAME "src"
102 #define CMD_NAME "cmd"
103 #define DATA_NAME "regs"
104 #define DISASSEM_NAME "asm"
106 #define NO_HILITE FALSE
107 #define MIN_WIN_HEIGHT 3
108 #define MIN_CMD_WIN_HEIGHT 3
110 /* Strings to display in the TUI status line. */
111 #define PROC_PREFIX "In: "
112 #define LINE_PREFIX "L"
113 #define PC_PREFIX "PC: "
114 #define SINGLE_KEY "(SingleKey)"
116 /* Minimum/Maximum length of some fields displayed in the TUI status
118 #define MIN_LINE_WIDTH 4 /* Use at least 4 digits for line
120 #define MIN_PROC_WIDTH 12
121 #define MAX_TARGET_WIDTH 10
122 #define MAX_PID_WIDTH 19
124 /* The kinds of layouts available. */
129 SRC_DISASSEM_COMMAND,
131 DISASSEM_DATA_COMMAND,
135 enum tui_line_or_address_kind
141 /* Structure describing source line or line address. */
142 struct tui_line_or_address
144 enum tui_line_or_address_kind loa;
152 /* Current Layout definition. */
153 struct tui_layout_def
155 enum tui_win_type display_mode;
158 /* Flags to tell what kind of breakpoint is at current line. */
161 TUI_BP_ENABLED = 0x01,
162 TUI_BP_DISABLED = 0x02,
164 TUI_BP_CONDITIONAL = 0x08,
165 TUI_BP_HARDWARE = 0x10
168 DEF_ENUM_FLAGS_TYPE (enum tui_bp_flag, tui_bp_flags);
170 /* Elements in the Source/Disassembly Window. */
171 struct tui_source_element
173 tui_source_element ()
175 line_or_addr.loa = LOA_LINE;
176 line_or_addr.u.line_no = 0;
179 ~tui_source_element ()
184 char *line = nullptr;
185 struct tui_line_or_address line_or_addr;
186 bool is_exec_point = false;
187 tui_bp_flags break_mode = 0;
192 # define MAX_LOCATOR_ELEMENT_LEN PATH_MAX
194 # define MAX_LOCATOR_ELEMENT_LEN 1024
197 /* Position of breakpoint markers in the exec info string. */
198 #define TUI_BP_HIT_POS 0
199 #define TUI_BP_BREAK_POS 1
200 #define TUI_EXEC_POS 2
201 #define TUI_EXECINFO_SIZE 4
203 typedef char tui_exec_info_content[TUI_EXECINFO_SIZE];
205 /* Execution info window class. */
207 struct tui_exec_info_window : public tui_gen_win_info
209 tui_exec_info_window ()
210 : tui_gen_win_info (EXEC_INFO_WIN)
214 ~tui_exec_info_window () override
219 /* Get or allocate contents. */
220 tui_exec_info_content *maybe_allocate_content (int n_elements);
222 /* Return the contents. */
223 const tui_exec_info_content *get_content () const
230 tui_exec_info_content *m_content = nullptr;
233 /* Locator window class. */
235 struct tui_locator_window : public tui_gen_win_info
237 tui_locator_window ()
238 : tui_gen_win_info (LOCATOR_WIN)
244 char full_name[MAX_LOCATOR_ELEMENT_LEN];
245 char proc_name[MAX_LOCATOR_ELEMENT_LEN];
248 /* Architecture associated with code at this location. */
249 struct gdbarch *gdbarch = nullptr;
252 /* A data item window. */
254 struct tui_data_item_window : public tui_gen_win_info
256 tui_data_item_window ()
257 : tui_gen_win_info (DATA_ITEM_WIN)
261 ~tui_data_item_window () override;
263 const char *name = nullptr;
264 /* The register number, or data display number. */
266 void *value = nullptr;
267 bool highlight = false;
268 char *content = nullptr;
271 /* This defines information about each logical window. */
272 struct tui_win_info : public tui_gen_win_info
276 explicit tui_win_info (enum tui_win_type type);
277 DISABLE_COPY_AND_ASSIGN (tui_win_info);
279 /* Scroll the contents vertically. This is only called via
280 forward_scroll and backward_scroll. */
281 virtual void do_scroll_vertical (int num_to_scroll) = 0;
283 /* Scroll the contents horizontally. This is only called via
284 left_scroll and right_scroll. */
285 virtual void do_scroll_horizontal (int num_to_scroll) = 0;
287 /* Called after make_visible_with_new_height sets the new height.
288 Should update the window. */
289 virtual void do_make_visible_with_new_height () = 0;
293 ~tui_win_info () override
297 /* Clear the pertinent detail in the window. */
298 virtual void clear_detail () = 0;
300 /* Return true if this window has the locator. */
301 virtual bool has_locator () const
306 /* Called after all the TUI windows are refreshed, to let this
307 window have a chance to update itself further. */
308 virtual void refresh_all ()
312 /* Called after a TUI window is given a new height; this updates any
313 related auxiliary windows. */
314 virtual void set_new_height (int height)
318 /* Compute the maximum height of this window. */
319 virtual int max_height () const;
321 /* Called after the tab width has been changed. */
322 virtual void update_tab_width ()
326 /* Make the window visible after the height has been changed. */
327 void make_visible_with_new_height ();
329 /* Set whether this window is highglighted. */
330 void set_highlight (bool highlight)
332 is_highlighted = highlight;
335 /* Methods to scroll the contents of this window. Note that they
336 are named with "_scroll" coming at the end because the more
337 obvious "scroll_forward" is defined as a macro in term.h. */
338 void forward_scroll (int num_to_scroll);
339 void backward_scroll (int num_to_scroll);
340 void left_scroll (int num_to_scroll);
341 void right_scroll (int num_to_scroll);
343 /* Return true if this window can be scrolled, false otherwise. */
344 virtual bool can_scroll () const
349 /* Can this window ever be highlighted? */
350 bool can_highlight = true;
352 /* Is this window highlighted? */
353 bool is_highlighted = false;
356 /* The base class for all source-like windows, namely the source and
357 disassembly windows. */
359 struct tui_source_window_base : public tui_win_info
362 explicit tui_source_window_base (enum tui_win_type type);
363 ~tui_source_window_base () override;
364 DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
366 void do_scroll_horizontal (int num_to_scroll) override;
367 void do_make_visible_with_new_height () override;
371 void clear_detail () override;
373 /* Return true if this window has the locator. */
374 bool has_locator () const override
376 return m_has_locator;
379 void make_visible (bool visible) override;
380 void refresh_window () override;
381 void refresh_all () override;
383 /* Refill the source window's source cache and update it. If this
384 is a disassembly window, then just update it. */
387 /* Set the location of the execution point. */
388 void set_is_exec_point_at (struct tui_line_or_address l);
390 void set_new_height (int height) override;
392 void update_tab_width () override;
394 /* Return true if the location LOC corresponds to the line number
395 LINE_NO in this source window; false otherwise. */
396 virtual bool location_matches_p (struct bp_location *loc, int line_no) = 0;
398 void reset (enum tui_win_type win_type,
399 int height, int width,
400 int origin_x, int origin_y) override;
402 /* Does the locator belong to this window? */
403 bool m_has_locator = false;
404 /* Execution information window. */
405 struct tui_exec_info_window *execution_info;
406 /* Used for horizontal scroll. */
407 int horizontal_offset = 0;
408 struct tui_line_or_address start_line_or_addr;
410 /* It is the resolved form as returned by symtab_to_fullname. */
411 char *fullname = nullptr;
413 /* Architecture associated with code at this location. */
414 struct gdbarch *gdbarch = nullptr;
416 std::vector<tui_source_element> content;
419 /* A TUI source window. */
421 struct tui_source_window : public tui_source_window_base
423 tui_source_window ();
424 ~tui_source_window ();
426 DISABLE_COPY_AND_ASSIGN (tui_source_window);
428 const char *name () const override
433 bool location_matches_p (struct bp_location *loc, int line_no) override;
435 bool showing_source_p (const char *filename) const;
439 void do_scroll_vertical (int num_to_scroll) override;
443 void style_changed ();
445 /* A token used to register and unregister an observer. */
446 gdb::observers::token m_observable;
449 /* A TUI disassembly window. */
451 struct tui_disasm_window : public tui_source_window_base
454 : tui_source_window_base (DISASSEM_WIN)
458 DISABLE_COPY_AND_ASSIGN (tui_disasm_window);
460 const char *name () const override
462 return DISASSEM_NAME;
465 bool location_matches_p (struct bp_location *loc, int line_no) override;
469 void do_scroll_vertical (int num_to_scroll) override;
472 struct tui_data_window : public tui_win_info
475 : tui_win_info (DATA_WIN)
479 DISABLE_COPY_AND_ASSIGN (tui_data_window);
481 void clear_detail () override;
482 void refresh_all () override;
484 void set_new_height (int height) override;
486 void refresh_window () override;
488 const char *name () const override
493 /* Windows that are used to display registers. */
494 std::vector<std::unique_ptr<tui_data_item_window>> regs_content;
495 int regs_column_count = 0;
496 /* Should regs be displayed at all? */
497 bool display_regs = false;
498 struct reggroup *current_group = nullptr;
500 /* Answer the number of the last line in the regs display. If there
501 are no registers (-1) is returned. */
502 int last_regs_line_no () const;
504 /* Answer the line number that the register element at element_no is
505 on. If element_no is greater than the number of register
506 elements there are, -1 is returned. */
507 int line_from_reg_element_no (int element_no) const;
509 /* Answer the index of the first element in line_no. If line_no is
510 past the register area (-1) is returned. */
511 int first_reg_element_no_inline (int line_no) const;
513 /* Displays the data that is in the data window's content. It does
514 not set the content. */
515 void display_all_data ();
517 /* Delete all the item windows in the data window. This is usually
518 done when the data window is scrolled. */
519 void delete_data_content_windows ();
521 void erase_data_content (const char *prompt);
523 /* Display the registers in the content from 'start_element_no'
524 until the end of the register content or the end of the display
525 height. No checking for displaying past the end of the registers
527 void display_registers_from (int start_element_no);
529 /* Display the registers starting at line line_no in the data
530 window. Answers the line number that the display actually
531 started from. If nothing is displayed (-1) is returned. */
532 int display_registers_from_line (int line_no);
536 void do_scroll_vertical (int num_to_scroll) override;
537 void do_scroll_horizontal (int num_to_scroll) override
540 void do_make_visible_with_new_height () override;
542 /* Return the index of the first element displayed. If none are
543 displayed, then return -1. */
544 int first_data_item_displayed ();
546 /* Display the registers in the content from 'start_element_no' on
547 'start_line_no' until the end of the register content or the end
548 of the display height. This function checks that we won't
549 display off the end of the register display. */
550 void display_reg_element_at_line (int start_element_no, int start_line_no);
553 struct tui_cmd_window : public tui_win_info
556 : tui_win_info (CMD_WIN)
558 can_highlight = false;
561 DISABLE_COPY_AND_ASSIGN (tui_cmd_window);
563 void clear_detail () override;
565 void make_visible (bool visible) override
569 int max_height () const override;
571 void refresh_window () override
575 const char *name () const override
580 bool can_scroll () const override
589 void do_scroll_vertical (int num_to_scroll) override
593 void do_scroll_horizontal (int num_to_scroll) override
597 void do_make_visible_with_new_height () override;
600 extern int tui_win_is_auxiliary (enum tui_win_type win_type);
604 extern struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
606 #define TUI_SRC_WIN ((tui_source_window *) tui_win_list[SRC_WIN])
607 #define TUI_DISASM_WIN ((tui_source_window_base *) tui_win_list[DISASSEM_WIN])
608 #define TUI_DATA_WIN ((tui_data_window *) tui_win_list[DATA_WIN])
609 #define TUI_CMD_WIN ((tui_cmd_window *) tui_win_list[CMD_WIN])
611 /* An iterator that iterates over all windows. */
613 class tui_window_iterator
617 typedef tui_window_iterator self_type;
618 typedef struct tui_win_info *value_type;
619 typedef struct tui_win_info *&reference;
620 typedef struct tui_win_info **pointer;
621 typedef std::forward_iterator_tag iterator_category;
622 typedef int difference_type;
624 explicit tui_window_iterator (enum tui_win_type type)
630 tui_window_iterator ()
631 : m_type (MAX_MAJOR_WINDOWS)
635 bool operator!= (const self_type &other) const
637 return m_type != other.m_type;
640 value_type operator* () const
642 gdb_assert (m_type < MAX_MAJOR_WINDOWS);
643 return tui_win_list[m_type];
646 self_type &operator++ ()
657 while (m_type < MAX_MAJOR_WINDOWS && tui_win_list[m_type] == nullptr)
664 /* A range adapter for iterating over TUI windows. */
666 struct all_tui_windows
668 tui_window_iterator begin () const
670 return tui_window_iterator (SRC_WIN);
673 tui_window_iterator end () const
675 return tui_window_iterator ();
680 /* Data Manipulation Functions. */
681 extern void tui_initialize_static_data (void);
682 extern struct tui_win_info *tui_partial_win_by_name (const char *);
683 extern enum tui_layout_type tui_current_layout (void);
684 extern void tui_set_current_layout_to (enum tui_layout_type);
685 extern int tui_term_height (void);
686 extern void tui_set_term_height_to (int);
687 extern int tui_term_width (void);
688 extern void tui_set_term_width_to (int);
689 extern struct tui_locator_window *tui_locator_win_info_ptr (void);
690 extern std::vector<tui_source_window_base *> &tui_source_windows ();
691 extern void tui_clear_source_windows (void);
692 extern void tui_clear_source_windows_detail (void);
693 extern void tui_add_to_source_windows (struct tui_source_window_base *);
694 extern struct tui_win_info *tui_win_with_focus (void);
695 extern void tui_set_win_with_focus (struct tui_win_info *);
696 extern struct tui_layout_def *tui_layout_def (void);
697 extern int tui_win_resized (void);
698 extern void tui_set_win_resized_to (int);
700 extern struct tui_win_info *tui_next_win (struct tui_win_info *);
701 extern struct tui_win_info *tui_prev_win (struct tui_win_info *);
703 extern unsigned int tui_tab_width;
705 #endif /* TUI_TUI_DATA_H */