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cb24623460
This commit add comments describing tui_ui_out and its fields, and cleans up the code a little bit. Also switch to using in-class initialization so that the initial values can be seen alongside the comments. I see no reason for initializing m_line as -1 instead of 0, since all the checks in the .c file are of the form "> 0". AFAICS there's no practical difference between -1 and 0. So it seems simpler to initialize it as 0. There's a bit of redundancy in tui_ui_out::do_field_string, which is fixed by this commit. gdb/ChangeLog: 2019-03-19 Pedro Alves <palves@redhat.com> * tui/tui-out.c (tui_ui_out::do_field_string): Simplify. (tui_ui_out::do_text): Add comments. Reset M_LINE to 0 instead of to -1. Fix TABs vs spaces. (tui_ui_out::tui_ui_out): Don't initialize fields here. * tui/tui-out.h (tui_ui_out) Add intro comments. <m_line, m_start_of_line>: In-class initialize, and add describing comment.
66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
/* Copyright (C) 2016-2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef TUI_TUI_OUT_H
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#define TUI_TUI_OUT_H
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#include "cli-out.h"
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/* A ui_out class for the TUI. This is just like the CLI's ui_out,
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except that it overrides output methods to detect when a source
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line is being printed and show the source in the TUI's source
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window instead of printing the line in the console window. */
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class tui_ui_out : public cli_ui_out
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{
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public:
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explicit tui_ui_out (ui_file *stream);
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protected:
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void do_field_int (int fldno, int width, ui_align align, const char *fldname,
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int value) override;
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void do_field_string (int fldno, int width, ui_align align, const char *fldname,
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const char *string, ui_out_style_kind style) override;
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void do_field_fmt (int fldno, int width, ui_align align, const char *fldname,
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const char *format, va_list args) override
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ATTRIBUTE_PRINTF (6,0);
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void do_text (const char *string) override;
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private:
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/* These fields are used to make print_source_lines show the source
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in the TUI's source window instead of in the console.
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M_START_OF_LINE is incremented whenever something is output to
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the ui_out. If an integer field named "line" is printed on the
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ui_out, and nothing else has been printed yet (both
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M_START_OF_LINE and M_LINE are still 0), we assume
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print_source_lines is starting to print a source line, and thus
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record the line number in M_LINE. Afterwards, when we see a
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string field named "fullname" being output, we take the fullname
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and the recorded line and show the source line in the TUI's
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source window. tui_ui_out::do_text() suppresses text output
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until it sees an endline being printed, at which point these
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variables are reset back to 0. */
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int m_line = 0;
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int m_start_of_line = 0;
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};
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extern tui_ui_out *tui_out_new (struct ui_file *stream);
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#endif /* TUI_TUI_OUT_H */
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