Mercurial > octave
annotate libinterp/corefcn/input.h @ 27528:e51284fc0a51
eliminate promptflag from the lexer and input reader classes
We can use a much simpler method for determining whether to display
the primary or secondary prompt.
* input.h (base_reader::m_pflag): Delete member variable and all uses.
(base_reader::increment_promptflag, base_reader::decrement_promptflag,
base_reader::promptflag): Delete member functions and all uses.
(input_reader::increment_promptflag, input_reader::decrement_promptflag,
input_reader::promptflag): Delete member functions and all uses.
* interpreter.cc (interpreter::main_loop): For push parser, use
primary prompt on initial call for input, secondary prompt if
parser/lexer is asking for additional input.
* lex.h, lex.ll (base_lexer::increment_promptflag,
base_lexer::decrement_promptflag, base_lexer::promptflag):
Delete member functions and all uses.
(lexer::m_initial_input): New variable.
(lexer::reset): Also reset m_initial_input.
(lexer::fill_flex_buffer): Use primary prompt on initial call for
input, secondary prompt if parser/lexer is asking for additional input.
* parse.h (base_parser::increment_promptflag,
base_parser::decrement_promptflag, base_parser::promptflag):
Delete member functions and all uses.
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 18 Oct 2019 11:06:11 -0400 |
parents | 73be3c628eac |
children | 6971bc1a2f92 |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2019 John W. Eaton |
1 | 4 |
5 This file is part of Octave. | |
6 | |
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7 Octave is free software: you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by |
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9 the Free Software Foundation, either version 3 of the License, or |
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10 (at your option) any later version. |
1 | 11 |
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12 Octave is distributed in the hope that it will be useful, but |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
1 | 16 |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
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19 <https://www.gnu.org/licenses/>. |
1 | 20 |
21 */ | |
22 | |
23 // Use the GNU readline library for command line editing and hisory. | |
24 | |
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25 #if ! defined (octave_input_h) |
383 | 26 #define octave_input_h 1 |
1 | 27 |
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28 #include "octave-config.h" |
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29 |
1342 | 30 #include <cstdio> |
1 | 31 |
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32 #include <memory> |
1750 | 33 #include <string> |
34 | |
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35 #include "hook-fcn.h" |
3255 | 36 #include "oct-time.h" |
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37 #include "ovl.h" |
3770 | 38 #include "pager.h" |
3255 | 39 |
3804 | 40 // TRUE after a call to completion_matches. |
2299 | 41 extern bool octave_completion_matches_called; |
42 | |
7409 | 43 // TRUE if the plotting system has requested a call to drawnow at |
44 // the next user prompt. | |
7414 | 45 extern OCTINTERP_API bool Vdrawnow_requested; |
7409 | 46 |
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47 // TRUE if we are not executing a command direct from debug> prompt. |
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48 extern OCTINTERP_API bool Vtrack_line_num; |
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49 |
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50 extern octave::sys::time Vlast_prompt_time; |
5640 | 51 |
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52 class octave_value; |
3165 | 53 |
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54 namespace octave |
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55 { |
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56 class interpreter; |
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57 |
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58 class input_system |
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59 { |
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60 public: |
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61 |
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62 input_system (interpreter& interp); |
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63 |
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64 void initialize (bool line_editing); |
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65 |
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66 octave_value PS1 (const octave_value_list& args, int nargout); |
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67 |
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68 std::string PS1 (void) const { return m_PS1; } |
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69 |
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70 std::string PS1 (const std::string& s) |
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71 { |
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72 std::string val = m_PS1; |
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73 m_PS1 = s; |
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74 return val; |
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75 } |
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76 |
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77 void set_PS1 (const std::string& s) { m_PS1 = s; } |
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78 |
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79 octave_value PS2 (const octave_value_list& args, int nargout); |
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80 |
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81 std::string PS2 (void) const { return m_PS2; } |
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82 |
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83 std::string PS2 (const std::string& s) |
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84 { |
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85 std::string val = m_PS2; |
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86 m_PS2 = s; |
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87 return val; |
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88 } |
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89 |
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90 void set_PS2 (const std::string& s) { m_PS2 = s; } |
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91 |
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92 std::string last_debugging_command (void) const |
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93 { |
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94 return m_last_debugging_command; |
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95 } |
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96 |
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97 std::string last_debugging_command (const std::string& s) |
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98 { |
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99 std::string val = m_last_debugging_command; |
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100 m_last_debugging_command = s; |
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101 return val; |
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102 } |
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103 |
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104 octave_value |
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105 completion_append_char (const octave_value_list& args, int nargout); |
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106 |
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107 char completion_append_char (void) const |
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108 { |
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109 return m_completion_append_char; |
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110 } |
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111 |
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112 char completion_append_char (char c) |
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113 { |
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114 char val = m_completion_append_char; |
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115 m_completion_append_char = c; |
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116 return val; |
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117 } |
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118 |
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119 void set_completion_append_char (char c) { m_completion_append_char = c; } |
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120 |
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121 octave_value gud_mode (const octave_value_list& args, int nargout); |
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122 |
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123 bool gud_mode (void) const { return m_gud_mode; } |
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124 |
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125 bool gud_mode (bool flag) |
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126 { |
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127 bool val = m_gud_mode; |
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128 m_gud_mode = flag; |
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129 return val; |
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130 } |
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131 |
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132 void set_gud_mode (bool flag) { m_gud_mode = flag; } |
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133 |
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134 octave_value mfile_encoding (const octave_value_list& args, int nargout); |
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135 |
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136 std::string mfile_encoding (void) const { return m_mfile_encoding; } |
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137 |
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138 std::string mfile_encoding (const std::string& s) |
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139 { |
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140 std::string val = m_mfile_encoding; |
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141 m_mfile_encoding = s; |
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142 return val; |
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143 } |
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144 |
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145 void set_mfile_encoding (const std::string& s) { m_mfile_encoding = s; } |
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146 |
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147 bool yes_or_no (const std::string& prompt); |
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148 |
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149 std::string interactive_input (const std::string& s, bool& eof); |
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150 |
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151 octave_value_list |
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152 get_user_input (const octave_value_list& args, int nargout); |
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153 |
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154 bool have_input_event_hooks (void) const; |
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155 |
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156 void add_input_event_hook (const hook_function& hook_fcn); |
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157 |
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158 bool remove_input_event_hook (const std::string& hook_fcn_id); |
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159 |
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160 void clear_input_event_hooks (void); |
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161 |
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162 void run_input_event_hooks (void); |
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163 |
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164 private: |
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165 |
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166 interpreter& m_interpreter; |
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167 |
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168 // Primary prompt string. |
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169 std::string m_PS1; |
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170 |
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171 // Secondary prompt string. |
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172 std::string m_PS2; |
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173 |
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174 // Character to append after successful command-line completion |
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175 // attempts. |
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176 char m_completion_append_char; |
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177 |
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178 // TRUE if we are running in the Emacs GUD mode. |
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179 bool m_gud_mode; |
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180 |
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181 // Codepage which is used to read .m files |
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182 std::string m_mfile_encoding; |
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183 |
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184 // If we are in debugging mode, this is the last command entered, |
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185 // so that we can repeat the previous command if the user just |
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186 // types RET. |
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187 std::string m_last_debugging_command; |
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188 |
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189 hook_function_list m_input_event_hook_functions; |
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190 |
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191 std::string gnu_readline (const std::string& s, bool& eof) const; |
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192 }; |
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193 |
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194 class base_reader |
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195 { |
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196 public: |
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197 |
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198 friend class input_reader; |
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199 |
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200 base_reader (interpreter& interp) |
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201 : m_interpreter (interp) |
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202 { } |
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203 |
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204 base_reader (const base_reader& x) |
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205 : m_interpreter (x.m_interpreter) |
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206 { } |
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207 |
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208 virtual ~base_reader (void) = default; |
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209 |
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210 virtual std::string get_input (const std::string& prompt, bool& eof) = 0; |
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211 |
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212 virtual std::string input_source (void) const { return s_in_src; } |
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213 |
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214 std::string octave_gets (const std::string& prompt, bool& eof); |
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215 |
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216 virtual bool input_from_terminal (void) const { return false; } |
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217 |
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218 virtual bool input_from_file (void) const { return false; } |
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219 |
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220 virtual bool input_from_eval_string (void) const { return false; } |
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221 |
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222 protected: |
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223 |
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224 interpreter& m_interpreter; |
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225 |
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226 private: |
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227 |
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228 static const std::string s_in_src; |
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229 }; |
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230 |
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231 class input_reader |
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232 { |
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233 public: |
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234 |
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235 input_reader (interpreter& interp); |
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236 |
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237 input_reader (interpreter& interp, FILE *file); |
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238 |
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239 input_reader (interpreter& interp, const std::string& str); |
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240 |
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241 input_reader (const input_reader& ir) = default; |
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242 |
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243 input_reader& operator = (const input_reader& ir) = default; |
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244 |
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245 ~input_reader (void) = default; |
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246 |
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247 std::string get_input (const std::string& prompt, bool& eof) |
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248 { |
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249 return m_rep->get_input (prompt, eof); |
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250 } |
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251 |
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252 std::string input_source (void) const |
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253 { |
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254 return m_rep->input_source (); |
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255 } |
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256 |
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257 bool input_from_terminal (void) const |
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258 { |
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259 return m_rep->input_from_terminal (); |
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260 } |
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261 |
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262 bool input_from_file (void) const |
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263 { |
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264 return m_rep->input_from_file (); |
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265 } |
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266 |
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267 bool input_from_eval_string (void) const |
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268 { |
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269 return m_rep->input_from_eval_string (); |
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270 } |
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271 |
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272 private: |
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273 |
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274 std::shared_ptr<base_reader> m_rep; |
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275 }; |
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276 } |
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277 |
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278 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) |
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279 |
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280 OCTAVE_DEPRECATED (5, "use 'octave::input_system::yes_or_no' instead") |
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281 extern bool octave_yes_or_no (const std::string& prompt); |
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282 |
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283 OCTAVE_DEPRECATED (5, "use 'octave::input_system::clear_input_event_hooks' instead") |
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284 extern void remove_input_event_hook_functions (void); |
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285 |
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286 OCTAVE_DEPRECATED (5, "this function will be removed in a future version of Octave") |
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287 extern OCTINTERP_API FILE * get_input_from_stdin (void); |
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288 |
1 | 289 #endif |
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290 |
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291 #endif |