Mercurial > octave
annotate libinterp/parse-tree/pt-anon-scopes.cc @ 33658:b1d6e40ac737 stable tip
NEWS.9.md: Fix typo and minor formatting changes.
* etc/NEWS.9.md: Fix typo. Adjust whitespace. Use markdown syntax for code
snippets.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Wed, 05 Jun 2024 11:27:35 +0200 |
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children | 8f8bb94a1b83 |
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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 #ifdef 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 "error.h" |
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31 #include "pt-all.h" |
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32 #include "pt-anon-scopes.h" |
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33 |
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34 // TODO: make sure that if(f->scope()) is checked if necessary |
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35 |
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36 OCTAVE_BEGIN_NAMESPACE(octave) |
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37 |
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38 tree_anon_scopes::tree_anon_scopes (tree_anon_fcn_handle& anon_fh) |
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39 : tree_walker (), m_params (), m_vars () |
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40 { |
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41 visit_anon_fcn_handle (anon_fh); |
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42 } |
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43 |
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44 void |
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45 tree_anon_scopes::visit_anon_fcn_handle (tree_anon_fcn_handle& afh) |
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46 { |
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47 tree_parameter_list *param_list = afh.parameter_list (); |
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48 tree_expression *expr = afh.expression (); |
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49 |
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50 // Collect names of parameters. |
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51 |
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52 if (param_list) |
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53 { |
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54 std::list<std::string> pnames = param_list->variable_names (); |
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55 |
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56 for (const auto& nm : pnames) |
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57 m_params.insert (nm); |
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58 |
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59 // Hmm, should this be included in the list returned from |
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60 // tree_parameter_list::variable_names? |
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61 if (param_list->takes_varargs ()) |
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62 m_params.insert ("varargin"); |
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63 } |
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64 |
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65 // Further walk the tree to find free variables in this expression |
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66 // and any nested definitions of additional anonymous functions. |
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67 |
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68 if (expr) |
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69 expr->accept (*this); |
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70 } |
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71 |
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72 // The rest of visit_... methods is only for walking the tree. Many of |
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73 // them, in particular all methods for commands, are not applicable to |
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74 // anonymous functions. Only parts of the tree are walked which could |
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75 // contain further (nested) anonymous function definitions (so |
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76 // e.g. identifiers and left hand sides of assignments are ignored). |
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77 |
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78 void |
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79 tree_anon_scopes::visit_identifier (tree_identifier& id) |
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80 { |
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81 std::string nm = id.name (); |
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82 |
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83 if (m_params.find (nm) == m_params.end ()) |
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84 m_vars.insert (nm); |
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85 } |
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86 |
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87 void |
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88 tree_anon_scopes::visit_parameter_list (tree_parameter_list&) |
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89 { |
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90 // In visit_anon_fcn_handle we only accept/visit the body of |
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91 // anonymous function definitions, not the parameter list. |
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92 |
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93 panic_impossible (); |
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94 } |
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95 |
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96 void |
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97 tree_anon_scopes::visit_statement (tree_statement& stmt) |
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98 { |
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99 tree_command *cmd = stmt.command (); |
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100 |
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101 if (cmd) |
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102 panic_impossible (); |
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103 else |
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104 { |
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105 tree_expression *expr = stmt.expression (); |
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106 |
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107 if (expr) |
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108 expr->accept (*this); |
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109 } |
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110 } |
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111 |
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112 void |
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113 tree_anon_scopes::visit_statement_list (tree_statement_list& lst) |
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114 { |
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115 for (auto& p : lst) |
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116 { |
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117 tree_statement *elt = p; |
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118 |
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119 if (elt) |
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120 elt->accept (*this); |
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maint: Re-indent code after switch to using namespace macros.
Rik <rik@octave.org>
parents:
31605
diff
changeset
|
121 } |
aac27ad79be6
maint: Re-indent code after switch to using namespace macros.
Rik <rik@octave.org>
parents:
31605
diff
changeset
|
122 } |
25824
91e1ca0e3a9d
Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff
changeset
|
123 |
31605
e88a07dec498
maint: Use macros to begin/end C++ namespaces.
Rik <rik@octave.org>
parents:
30564
diff
changeset
|
124 OCTAVE_END_NAMESPACE(octave) |