1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING. If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if !defined (octave_pt_anon_scopes_h)
#define octave_pt_anon_scopes_h 1
#include <set>
#include <string>
#include "pt-walk.h"
namespace octave
{
// In possibly nested definitions of anonymous functions, collect
// their scopes and the symbol records therein.
class
tree_anon_scopes : public tree_walker
{
public:
tree_anon_scopes (void) = delete;
tree_anon_scopes (tree_anon_fcn_handle& anon_fh);
// No copying!
tree_anon_scopes (const tree_anon_scopes&) = delete;
tree_anon_scopes& operator = (const tree_anon_scopes&) = delete;
~tree_anon_scopes (void) = default;
std::set<std::string> fcn_parameters (void) const { return m_params; }
std::set<std::string> free_variables (void) const { return m_vars; }
// The following methods, though public, don't belong to the
// intended user interface of this class.
void visit_anon_fcn_handle (tree_anon_fcn_handle&);
void visit_identifier (tree_identifier&);
void visit_parameter_list (tree_parameter_list&);
void visit_statement (tree_statement&);
void visit_statement_list (tree_statement_list&);
private:
// Variable names that are function parameters.
std::set<std::string> m_params;
// Other variable names.
std::set<std::string> m_vars;
};
}
#endif
|
