annotate libinterp/corefcn/procstream.h @ 33623:4517f929c59d bytecode-interpreter tip

maint: Merge default to bytecode-interpreter
author Arun Giridhar <arungiridhar@gmail.com>
date Fri, 24 May 2024 16:22:41 -0400
parents 4b601ca024d5
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1993-2024 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_procstream_h)
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27 #define octave_procstream_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <iosfwd>
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32 #include <string>
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33
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34 #include <sys/types.h>
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35
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36 #include "oct-procbuf.h"
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37
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38 OCTAVE_BEGIN_NAMESPACE(octave)
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39
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40 class OCTINTERP_API procstreambase : virtual public std::ios
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41 {
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42 public:
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43
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44 procstreambase () : m_pb () { pb_init (); }
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45
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46 procstreambase (const std::string& name, int mode);
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47
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48 procstreambase (const char *name, int mode);
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49
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50 OCTAVE_DISABLE_COPY_MOVE (procstreambase)
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51
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52 ~procstreambase () { close (); }
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53
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54 void open (const std::string& name, int mode)
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55 {
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56 open (name.c_str (), mode);
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57 }
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58
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59 void open (const char *name, int mode);
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60
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61 int is_open () const { return m_pb.is_open (); }
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62
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63 int close ();
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64
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65 pid_t pid () const { return m_pb.pid (); }
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66
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67 int file_number () const { return m_pb.file_number (); }
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68
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69 private:
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71 procbuf m_pb;
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72
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73 void pb_init ()
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74 {
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75 // Explicit initialization of the std::ios object is needed.
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76 // FIXME: is there a better way to organize these classes?
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77 init (&m_pb);
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78 }
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79 };
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80
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81 class OCTINTERP_API iprocstream : public std::istream, public procstreambase
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82 {
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83 public:
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84
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85 iprocstream () : std::istream (nullptr), procstreambase () { }
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86
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87 iprocstream (const std::string& name, int mode = std::ios::in)
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88 : std::istream (nullptr), procstreambase (name, mode)
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89 { }
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90
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91 iprocstream (const char *name, int mode = std::ios::in)
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92 : std::istream (nullptr), procstreambase (name, mode)
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93 { }
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94
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95 OCTAVE_DISABLE_COPY_MOVE (iprocstream)
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96
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97 ~iprocstream () = default;
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98
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99 void open (const std::string& name, int mode = std::ios::in)
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100 {
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101 procstreambase::open (name, mode);
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102 }
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103
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104 void open (const char *name, int mode = std::ios::in)
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105 {
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106 procstreambase::open (name, mode);
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107 }
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108 };
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109
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110 class OCTINTERP_API oprocstream : public std::ostream, public procstreambase
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111 {
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112 public:
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113
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114 oprocstream () : std::ostream (nullptr), procstreambase () { }
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115
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116 oprocstream (const std::string& name, int mode = std::ios::out)
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117 : std::ostream (nullptr), procstreambase (name, mode) { }
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118
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119 oprocstream (const char *name, int mode = std::ios::out)
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120 : std::ostream (nullptr), procstreambase (name, mode) { }
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121
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122 OCTAVE_DISABLE_COPY_MOVE (oprocstream)
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123
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124 ~oprocstream () = default;
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125
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126 void open (const std::string& name, int mode = std::ios::out)
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127 {
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128 procstreambase::open (name, mode);
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129 }
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130
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131 void open (const char *name, int mode = std::ios::out)
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132 {
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133 procstreambase::open (name, mode);
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134 }
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135 };
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136
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137 class OCTINTERP_API procstream : public std::iostream, public procstreambase
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138 {
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139 public:
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140
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141 procstream () : std::iostream (nullptr), procstreambase () { }
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142
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143 procstream (const std::string& name, int mode)
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144 : std::iostream (nullptr), procstreambase (name, mode)
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145 { }
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146
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147 procstream (const char *name, int mode)
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148 : std::iostream (nullptr), procstreambase (name, mode)
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149 { }
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150
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151 OCTAVE_DISABLE_COPY_MOVE (procstream)
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152
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153 ~procstream () = default;
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154
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155 void open (const std::string& name, int mode)
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156 {
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157 procstreambase::open (name, mode);
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158 }
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159
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160 void open (const char *name, int mode)
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161 {
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162 procstreambase::open (name, mode);
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163 }
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164 };
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165
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166 OCTAVE_END_NAMESPACE(octave)
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167
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168 #endif