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annotate libinterp/parse-tree/pt-arg-list.cc @ 33309:d422992b5483

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refactor position tracking in the parser This change replaces direct source line and column tracking in the tree_* classes with the beginning and ending positions in tokens created by the lexer. All line and column arguments for tree_* constructors have been removed. More tree_* classes have been modified to store tokens that are part of the syntax but not necessary for evaluation. Affected files: cdef-class.cc, ov-fcn.cc, ov-fcn.h, ov-usr-fcn.cc, ov-usr-fcn.h, bp-table.cc, oct-parse.yy, parse.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.h, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-except.h, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.h, pt-select.h, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-unop.cc, pt-unop.h, pt.cc, and pt.h.
author John W. Eaton <jwe@octave.org>
date Thu, 04 Apr 2024 00:58:56 -0400
parents 0b5f3219b650
children
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rev   line source
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2024 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 (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <string>
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31
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32 #include "str-vec.h"
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33
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34 #include "ovl.h"
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35 #include "ov.h"
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36 #include "pt-arg-list.h"
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37 #include "pt-exp.h"
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38 #include "pt-id.h"
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39 #include "pt-idx.h"
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40 #include "pt-pr-code.h"
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41
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42 OCTAVE_BEGIN_NAMESPACE(octave)
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43
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44 // Argument lists.
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45
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46 tree_argument_list::~tree_argument_list ()
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47 {
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48 while (! empty ())
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49 {
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50 auto p = begin ();
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51 delete *p;
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52 erase (p);
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53 }
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54 }
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55
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56 void
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57 tree_argument_list::push_back (const element_type& s)
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58 {
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59 std::list<tree_expression *>::push_back (s);
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60
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61 if (! m_list_includes_magic_tilde && s && s->is_identifier ())
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62 {
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63 tree_identifier *id = dynamic_cast<tree_identifier *> (s);
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64 m_list_includes_magic_tilde = id && id->is_black_hole ();
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65 }
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66 }
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67
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68 bool
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69 tree_argument_list::all_elements_are_constant () const
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70 {
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71 for (const tree_expression *elt : *this)
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72 {
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73 if (! elt->is_constant ())
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74 return false;
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75 }
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76
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77 return true;
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78 }
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79
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80 bool
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81 tree_argument_list::is_valid_lvalue_list () const
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82 {
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83 bool retval = true;
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84
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85 for (const tree_expression *elt : *this)
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86 {
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87 // There is no need for a separate check for the magic "~" because it
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88 // is represented by tree_black_hole, and that is derived from
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89 // tree_identifier.
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90 if (! (elt->is_identifier () || elt->is_index_expression ()))
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91 {
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92 retval = false;
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93 break;
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94 }
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95 }
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96
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97 return retval;
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98 }
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99
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100 string_vector
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101 tree_argument_list::get_arg_names () const
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102 {
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103 int len = size ();
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104
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105 string_vector retval (len);
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106
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107 int k = 0;
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108
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109 for (tree_expression *elt : *this)
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110 retval(k++) = elt->str_print_code ();
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111
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112 return retval;
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113 }
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114
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115 std::list<std::string>
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116 tree_argument_list::variable_names () const
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117 {
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118 std::list<std::string> retval;
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119
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120 for (tree_expression *elt : *this)
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121 {
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122 if (elt->is_identifier ())
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123 {
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124 tree_identifier *id = dynamic_cast<tree_identifier *> (elt);
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125
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126 retval.push_back (id->name ());
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127 }
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128 else if (elt->is_index_expression ())
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129 {
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130 tree_index_expression *idx_expr
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131 = dynamic_cast<tree_index_expression *> (elt);
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132
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133 retval.push_back (idx_expr->name ());
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134 }
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135 }
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136
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137 return retval;
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138 }
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139
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140 tree_argument_list *
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141 tree_argument_list::dup (symbol_scope& scope) const
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142 {
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143 tree_argument_list *new_list = new tree_argument_list ();
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144
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145 new_list->m_simple_assign_lhs = m_simple_assign_lhs;
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146 new_list->m_list_includes_magic_tilde = m_list_includes_magic_tilde;
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147 new_list->m_delims = m_delims;
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148
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149 for (const tree_expression *elt : *this)
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150 new_list->push_back (elt ? elt->dup (scope) : nullptr);
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151
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152 return new_list;
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153 }
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154
e88a07dec498 maint: Use macros to begin/end C++ namespaces.
Rik <rik@octave.org>
parents: 30564
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155 OCTAVE_END_NAMESPACE(octave)