1 //////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (C) 2018-2021 The Octave Project Developers 4 // 5 // See the file COPYRIGHT.md in the top-level directory of this 6 // distribution or <https://octave.org/copyright/>. 7 // 8 // This file is part of Octave. 9 // 10 // Octave is free software: you can redistribute it and/or modify it 11 // under the terms of the GNU General Public License as published by 12 // the Free Software Foundation, either version 3 of the License, or 13 // (at your option) any later version. 14 // 15 // Octave is distributed in the hope that it will be useful, but 16 // WITHOUT ANY WARRANTY; without even the implied warranty of 17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 // GNU General Public License for more details. 19 // 20 // You should have received a copy of the GNU General Public License 21 // along with Octave; see the file COPYING. If not, see 22 // <https://www.gnu.org/licenses/>. 23 // 24 //////////////////////////////////////////////////////////////////////// 25 26 #if ! defined (octave_settings_h) 27 #define octave_settings_h 1 28 29 #include "octave-config.h" 30 31 #include <cstddef> 32 33 class octave_value; 34 class octave_value_list; 35 36 namespace octave 37 { 38 // Most settings for the interpreter are stored in the classes which 39 // they affect (intput_system, output_system, load_path, etc. Some 40 // don't really fit anywhere else. For example, there is no single 41 // lexer or parser object, so we store settings for those things 42 // here. 43 44 class settings 45 { 46 public: 47 48 settings (void); 49 50 settings (const settings&) = delete; 51 52 settings& operator = (const settings&) = delete; 53 54 ~settings (void) = default; 55 56 octave_value display_tokens (const octave_value_list& args, int nargout); 57 display_tokens(void)58 bool display_tokens (void) const { return m_display_tokens; } 59 display_tokens(bool flag)60 bool display_tokens (bool flag) 61 { 62 bool val = m_display_tokens; 63 m_display_tokens = flag; 64 return val; 65 } 66 67 // Read only. token_count(void)68 std::size_t token_count (void) const { return m_token_count; } 69 increment_token_count(void)70 void increment_token_count (void) { ++m_token_count; } 71 72 octave_value lexer_debug_flag (const octave_value_list& args, int nargout); 73 lexer_debug_flag(void)74 bool lexer_debug_flag (void) const { return m_lexer_debug_flag; } 75 lexer_debug_flag(bool flag)76 bool lexer_debug_flag (bool flag) 77 { 78 bool val = m_lexer_debug_flag; 79 m_lexer_debug_flag = flag; 80 return val; 81 } 82 83 private: 84 85 // Display tokens as they are processed, for debugging. 86 bool m_display_tokens = false; 87 88 // Number of tokens processed since interpreter startup. 89 std::size_t m_token_count = 0; 90 91 // Internal variable for lexer debugging state. 92 bool m_lexer_debug_flag = false; 93 }; 94 } 95 96 #endif 97