Mercurial > octave

annotate libinterp/parse-tree/pt-anon-scopes.cc @ 30564:796f54d4ddbf stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents 0a5b15007766
children e88a07dec498
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
27923
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
1 ////////////////////////////////////////////////////////////////////////
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
2 //
30564
796f54d4ddbf update Octave Project Developers copyright for the new year
John W. Eaton <jwe@octave.org>
parents: 29358
diff changeset
3 // Copyright (C) 1996-2022 The Octave Project Developers
27923
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
4 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
5 // See the file COPYRIGHT.md in the top-level directory of this
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
6 // distribution or <https://octave.org/copyright/>.
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
7 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
8 // This file is part of Octave.
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
9 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
10 // Octave is free software: you can redistribute it and/or modify it
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
11 // under the terms of the GNU General Public License as published by
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
12 // the Free Software Foundation, either version 3 of the License, or
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
13 // (at your option) any later version.
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
14 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
15 // Octave is distributed in the hope that it will be useful, but
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
18 // GNU General Public License for more details.
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
19 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
20 // You should have received a copy of the GNU General Public License
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
21 // along with Octave; see the file COPYING. If not, see
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
22 // <https://www.gnu.org/licenses/>.
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
23 //
bd51beb6205e update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents: 27919
diff changeset
24 ////////////////////////////////////////////////////////////////////////
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
25
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
26 #ifdef HAVE_CONFIG_H
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
27 #include <config.h>
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
28 #endif
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
29
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
30 #include "error.h"
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
31 #include "pt-all.h"
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
32 #include "pt-anon-scopes.h"
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
33
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
34 // TODO: make sure that if(f->scope()) is checked if necessary
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
35
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
36 namespace octave
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
37 {
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
38 tree_anon_scopes::tree_anon_scopes (tree_anon_fcn_handle& anon_fh)
27725
6388a240de87 move some common actions into tree_walker base class
John W. Eaton <jwe@octave.org>
parents: 26686
diff changeset
39 : tree_walker (), m_params (), m_vars ()
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
40 {
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
41 visit_anon_fcn_handle (anon_fh);
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
42 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
43
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
44 void
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
45 tree_anon_scopes::visit_anon_fcn_handle (tree_anon_fcn_handle& afh)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
46 {
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
47 tree_parameter_list *param_list = afh.parameter_list ();
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
48 tree_expression *expr = afh.expression ();
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
49
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
50 // Collect names of parameters.
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
51
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
52 if (param_list)
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
53 {
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
54 std::list<std::string> pnames = param_list->variable_names ();
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
55
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
56 for (const auto& nm : pnames)
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
57 m_params.insert (nm);
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
58
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
59 // Hmm, should this be included in the list returned from
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
60 // tree_parameter_list::variable_names?
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
61 if (param_list->takes_varargs ())
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
62 m_params.insert ("varargin");
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
63 }
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
64
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
65 // Further walk the tree to find free variables in this expression
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
66 // and any nested definitions of additional anonymous functions.
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
67
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
68 if (expr)
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
69 expr->accept (*this);
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
70 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
71
27929
265b386f8b20 maint: Use two spaces between sentences in code comments.
Rik <rik@octave.org>
parents: 27923
diff changeset
72 // The rest of visit_... methods is only for walking the tree. Many of
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
73 // them, in particular all methods for commands, are not applicable to
27929
265b386f8b20 maint: Use two spaces between sentences in code comments.
Rik <rik@octave.org>
parents: 27923
diff changeset
74 // anonymous functions. Only parts of the tree are walked which could
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
75 // contain further (nested) anonymous function definitions (so
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
76 // e.g. identifiers and left hand sides of assignments are ignored).
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
77
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
78 void
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
79 tree_anon_scopes::visit_identifier (tree_identifier& id)
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
80 {
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
81 std::string nm = id.name ();
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
82
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
83 if (m_params.find (nm) == m_params.end ())
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
84 m_vars.insert (nm);
25824
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
85 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
86
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
87 void
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
88 tree_anon_scopes::visit_parameter_list (tree_parameter_list&)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
89 {
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
90 // In visit_anon_fcn_handle we only accept/visit the body of
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
91 // anonymous function definitions, not the parameter list.
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
92
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
93 panic_impossible ();
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
94 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
95
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
96 void
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
97 tree_anon_scopes::visit_statement (tree_statement& stmt)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
98 {
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
99 tree_command *cmd = stmt.command ();
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
100
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
101 if (cmd)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
102 panic_impossible ();
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
103 else
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
104 {
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
105 tree_expression *expr = stmt.expression ();
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
106
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
107 if (expr)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
108 expr->accept (*this);
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
109 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
110 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
111
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
112 void
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
113 tree_anon_scopes::visit_statement_list (tree_statement_list& lst)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
114 {
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
115 for (auto& p : lst)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
116 {
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
117 tree_statement *elt = p;
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
118
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
119 if (elt)
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
120 elt->accept (*this);
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
121 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
122 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
123 }
91e1ca0e3a9d Save all scopes of nested anonymous functions (bug #45969).
Olaf Till <i7tiol@t-online.de>
parents:
diff changeset
124