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annotate libinterp/parse-tree/pt-id.h @ 22869:f75d289645ec

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make deleted functions public * octave-gui.h, resource-manager.h, shortcut-manager.h, base-text-renderer.h, c-file-ptr-stream.h, dynamic-ld.cc, dynamic-ld.h, event-queue.h, ft-text-renderer.cc, gl-render.cc, gl-render.h, graphics.cc, graphics.in.h, interpreter.h, mex.cc, mxarray.in.h, oct-fstrm.h, oct-iostrm.h, oct-prcstrm.h, oct-procbuf.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, octave-link.h, pager.h, profiler.h, sighandlers.cc, symtab.h, text-renderer.h, zfstream.h, __init_fltk__.cc, ov-builtin.h, ov-dld-fcn.h, ov-fcn.h, ov-mex-fcn.h, ov-typeinfo.h, ov-usr-fcn.h, octave.h, lex.h, parse.h, pt-arg-list.h, pt-array-list.h, pt-assign.h, pt-binop.h, pt-bp.h, pt-cell.h, pt-check.h, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.h, pt-eval.h, pt-except.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h, pt-id.h, pt-idx.h, pt-jump.h, pt-loop.h, pt-mat.h, pt-misc.h, pt-pr-code.h, pt-select.h, pt-stmt.h, pt-unop.h, pt-walk.h, pt.h, token.h, Array.cc, idx-vector.h, oct-fftw.h, sparse-chol.cc, sparse-qr.cc, file-ops.h, mach-info.h, oct-env.h, action-container.h, cmd-edit.cc, cmd-edit.h, cmd-hist.h, oct-locbuf.h, oct-mutex.h, oct-shlib.cc, oct-sort.h, pathsearch.h, singleton-cleanup.h, unwind-prot.h, url-transfer.cc, url-transfer.h: Declare deleted copy constructors and assignment operators public.
author John W. Eaton <jwe@octave.org>
date Tue, 06 Dec 2016 12:40:45 -0500
parents 87e3163f6c87
children 4e3d47dc7e25
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1 /*
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2
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3 Copyright (C) 1996-2016 John W. Eaton
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4
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5 This file is part of Octave.
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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.
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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.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_pt_id_h)
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24 #define octave_pt_id_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include <iosfwd>
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29 #include <string>
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30
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31 class octave_value;
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32 class octave_value_list;
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33 class octave_function;
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34
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35 class tree_walker;
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36
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37 #include "oct-lvalue.h"
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38 #include "pt-bp.h"
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39 #include "pt-exp.h"
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40 #include "symtab.h"
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41
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42 // Symbols from the symbol table.
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43
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44 class
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45 tree_identifier : public tree_expression
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46 {
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47 friend class tree_index_expression;
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48
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49 public:
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50
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51 tree_identifier (int l = -1, int c = -1)
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52 : tree_expression (l, c) { }
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53
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54 tree_identifier (const symbol_table::symbol_record& s,
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55 int l = -1, int c = -1,
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56 symbol_table::scope_id sc = symbol_table::current_scope ())
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57 : tree_expression (l, c), sym (s, sc) { }
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58
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59 // No copying!
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60
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61 tree_identifier (const tree_identifier&) = delete;
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62
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63 tree_identifier& operator = (const tree_identifier&) = delete;
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64
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65 ~tree_identifier (void) = default;
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66
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67 bool has_magic_end (void) const { return (name () == "end"); }
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68
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69 bool is_identifier (void) const { return true; }
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70
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71 // The name doesn't change with scope, so use sym instead of
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72 // accessing it through sym so that this function may remain const.
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73 std::string name (void) const { return sym.name (); }
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74
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75 bool is_defined (void) { return sym->is_defined (); }
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76
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77 virtual bool is_variable (void) const { return sym->is_variable (); }
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78
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79 virtual bool is_black_hole (void) { return false; }
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80
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81 // Try to find a definition for an identifier. Here's how:
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82 //
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83 // * If the identifier is already defined and is a function defined
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84 // in an function file that has been modified since the last time
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85 // we parsed it, parse it again.
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86 //
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87 // * If the identifier is not defined, try to find a builtin
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88 // variable or an already compiled function with the same name.
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89 //
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90 // * If the identifier is still undefined, try looking for an
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91 // function file to parse.
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92 //
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93 // * On systems that support dynamic linking, we prefer .oct files,
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94 // then .mex files, then .m files.
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96 octave_value
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97 do_lookup (const octave_value_list& args = octave_value_list ())
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98 {
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99 return sym->find (args);
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100 }
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101
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102 void mark_global (void) { sym->mark_global (); }
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103
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104 void mark_as_static (void) { sym->init_persistent (); }
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106 void mark_as_formal_parameter (void) { sym->mark_formal (); }
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107
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108 // We really need to know whether this symbol referst to a variable
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109 // or a function, but we may not know that yet.
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110
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111 bool lvalue_ok (void) const { return true; }
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112
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113 octave_value rvalue1 (int nargout = 1);
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114
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115 octave_value_list rvalue (int nargout)
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116 {
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117 return rvalue (nargout, 0);
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118 }
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119
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120 octave_value_list rvalue (int nargout,
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121 const std::list<octave_lvalue> *lvalue_list);
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122
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123 octave_lvalue lvalue (void);
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124
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125 void eval_undefined_error (void);
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126
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127 void static_workspace_error (void)
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128 {
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129 error ("can not add variable \"%s\" to a static workspace",
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130 name ().c_str ());
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131 }
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132
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133 tree_identifier *dup (symbol_table::scope_id scope,
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134 symbol_table::context_id context) const;
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135
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136 void accept (tree_walker& tw);
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137
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138 symbol_table::symbol_reference symbol (void) const
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139 {
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140 return sym;
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141 }
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142 private:
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143
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144 // The symbol record that this identifier references.
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145 symbol_table::symbol_reference sym;
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146 };
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147
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148 class tree_black_hole : public tree_identifier
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149 {
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150 public:
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151
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152 tree_black_hole (int l = -1, int c = -1)
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153 : tree_identifier (l, c) { }
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154
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155 std::string name (void) const { return "~"; }
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156
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157 bool is_variable (void) const { return false; }
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158
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159 bool is_black_hole (void) { return true; }
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160
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161 tree_black_hole *dup (symbol_table::scope_id,
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162 symbol_table::context_id) const
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163 {
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164 return new tree_black_hole;
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165 }
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166
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167 octave_lvalue lvalue (void)
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168 {
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169 return octave_lvalue (); // black hole lvalue
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170 }
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171 };
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172
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173 #endif
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174