Mercurial > octave

annotate libinterp/parse-tree/pt-id.cc @ 27371:fcaecdbc8d8a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
don't use visitor pattern for expression evaluation (bug #56752) Although it is desirable to have all parse tree evaluation functions grouped together in a single file, using the visitor pattern can be inefficient, especially when the visitor function is small and the extra levels of indirection and virtual function resolution can take more time than the evaluation function itself (evaluation of constants, for example). For all classes derived from tree_expression, introduce new evaluate and evaluate_n methods. Use those instead of visit_CLASS functions to perform expression evaluation. Results are now returned directly from the evaluation functions instead of storing them in the tree_evaluator object. Files affected: cdef-class.cc, oct-parse.yy, 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-colon.cc, pt-colon.h, pt-const.h, pt-eval.cc, pt-eval.h, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-loop.cc, pt-mat.cc, pt-mat.h, pt-select.cc, pt-tm-const.cc, pt-unop.cc, and pt-unop.h.
author John W. Eaton <jwe@octave.org>
date Fri, 30 Aug 2019 15:02:14 -0400
parents cf9e10ce3351
children e8c417f6ef83
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
1 /*
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
2
26376
00f796120a6d maint: Update copyright dates in all source files.
John W. Eaton <jwe@octave.org>
parents: 25383
diff changeset
3 Copyright (C) 1996-2019 John W. Eaton
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
4
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
5 This file is part of Octave.
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
6
24534
194eb4bd202b maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents: 24361
diff changeset
7 Octave is free software: you can redistribute it and/or modify it
22755
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
8 under the terms of the GNU General Public License as published by
24534
194eb4bd202b maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents: 24361
diff changeset
9 the Free Software Foundation, either version 3 of the License, or
22755
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
10 (at your option) any later version.
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
11
22755
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
12 Octave is distributed in the hope that it will be useful, but
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
13 WITHOUT ANY WARRANTY; without even the implied warranty of
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3a2b891d0b33 maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents: 22407
diff changeset
15 GNU General Public License for more details.
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
16
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6542
diff changeset
18 along with Octave; see the file COPYING. If not, see
24534
194eb4bd202b maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents: 24361
diff changeset
19 <https://www.gnu.org/licenses/>.
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
20
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
21 */
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
22
21724
aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef"
John W. Eaton <jwe@octave.org>
parents: 21301
diff changeset
23 #if defined (HAVE_CONFIG_H)
21301
40de9f8f23a6 Use '#include "config.h"' rather than <config.h>.
Rik <rik@octave.org>
parents: 21200
diff changeset
24 # include "config.h"
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
25 #endif
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
26
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
27 #include "error.h"
23599
5cb3a2bb5e1e don't use singleton for symbol_table
John W. Eaton <jwe@octave.org>
parents: 23435
diff changeset
28 #include "interpreter-private.h"
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents: 2971
diff changeset
29 #include "oct-lvalue.h"
22898
9baa19102908 refactor display and disp functions (bug #49794)
John W. Eaton <jwe@octave.org>
parents: 22755
diff changeset
30 #include "parse.h"
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
31 #include "pt-const.h"
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
32 #include "pt-id.h"
24352
bff8e3884a88 restructure global variable handling in symbol table
John W. Eaton <jwe@octave.org>
parents: 24270
diff changeset
33 #include "symscope.h"
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
34 #include "utils.h"
2956
c41e4dca98b9 [project @ 1997-05-09 17:17:43 by jwe]
jwe
parents: 2955
diff changeset
35 #include "variables.h"
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
36
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
37 namespace octave
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
38 {
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
39 // Symbols from the symbol table.
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
40
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
41 void
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
42 tree_identifier::eval_undefined_error (void)
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
43 {
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
44 int l = line ();
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
45 int c = column ();
10443
34e51d4e199b implement smart warnings about missing Matlab functionality
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
46
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
47 maybe_missing_function_hook (name ());
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
48
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
49 if (l == -1 && c == -1)
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
50 error_with_id ("Octave:undefined-function",
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
51 "'%s' undefined", name ().c_str ());
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
52 else
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
53 error_with_id ("Octave:undefined-function",
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
54 "'%s' undefined near line %d column %d",
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
55 name ().c_str (), l, c);
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
56 }
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
57
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
58 octave_lvalue
25383
d3a035528c9a use reference to tree_evaluator instead of pointer
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
59 tree_identifier::lvalue (tree_evaluator& tw)
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
60 {
24846
7620f1f5290d use m_ prefix for member variables in parse tree classes
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
61 if (m_sym.is_added_static ())
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
62 static_workspace_error ();
15236
44d6ffdf9479 Disallow new variables in nested functions (bug #36271)
Max Brister <max@2bass.com>
parents: 15195
diff changeset
63
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
64 return octave_lvalue (m_sym, tw.get_current_stack_frame ());
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
65 }
2971
f2be17e6f1ea [project @ 1997-05-15 18:55:44 by jwe]
jwe
parents: 2960
diff changeset
66
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
67 tree_identifier *
24270
bc3819b7cca1 don't use symbol_table:: nesting for symbol_record, symbol_scope, or fcn_info
John W. Eaton <jwe@octave.org>
parents: 24037
diff changeset
68 tree_identifier::dup (symbol_scope& scope) const
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
69 {
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
70 // The new tree_identifier object contains a symbol_record
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
71 // entry from the duplicated scope.
5861
2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe]
jwe
parents: 5775
diff changeset
72
24270
bc3819b7cca1 don't use symbol_table:: nesting for symbol_record, symbol_scope, or fcn_info
John W. Eaton <jwe@octave.org>
parents: 24037
diff changeset
73 symbol_record new_sym = scope.find_symbol (name ());
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
74
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
75 tree_identifier *new_id
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
76 = new tree_identifier (new_sym, line (), column ());
5861
2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe]
jwe
parents: 5775
diff changeset
77
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
78 new_id->copy_base (*this);
5861
2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe]
jwe
parents: 5775
diff changeset
79
23075
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
80 return new_id;
4e3d47dc7e25 move parse tree classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 22898
diff changeset
81 }
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
82
27371
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
83 octave_value_list
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
84 tree_identifier::evaluate_n (tree_evaluator& tw, int nargout)
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
85 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
86 octave_value_list retval;
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
87
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
88 octave_value val = tw.varval (m_sym);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
89
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
90 if (val.is_undefined ())
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
91 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
92 interpreter& interp = tw.get_interpreter ();
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
93
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
94 symbol_table& symtab = interp.get_symbol_table ();
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
95
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
96 val = symtab.find_function (m_sym.name ());
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
97 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
98
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
99 if (val.is_defined ())
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
100 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
101 // GAGME -- this would be cleaner if we required
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
102 // parens to indicate function calls.
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
103 //
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
104 // If this identifier refers to a function, we need to know
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
105 // whether it is indexed so that we can do the same thing
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
106 // for 'f' and 'f()'. If the index is present and the function
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
107 // object declares it can handle it, return the function object
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
108 // and let tree_index_expression::rvalue handle indexing.
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
109 // Otherwise, arrange to call the function here, so that we don't
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
110 // return the function definition as a value.
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
111
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
112 octave_function *fcn = nullptr;
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
113
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
114 if (val.is_function ())
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
115 fcn = val.function_value (true);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
116
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
117 if (fcn && ! (is_postfix_indexed ()
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
118 && fcn->accepts_postfix_index (postfix_index ())))
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
119 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
120 retval = fcn->call (tw, nargout);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
121 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
122 else
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
123 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
124 if (print_result () && nargout == 0
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
125 && tw.statement_printing_enabled ())
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
126 {
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
127 octave_value_list args = ovl (val);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
128 args.stash_name_tags (string_vector (name ()));
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
129 feval ("display", args);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
130 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
131
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
132 retval = ovl (val);
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
133 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
134 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
135 else if (m_sym.is_added_static ())
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
136 static_workspace_error ();
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
137 else
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
138 eval_undefined_error ();
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
139
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
140 return retval;
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
141 }
fcaecdbc8d8a don't use visitor pattern for expression evaluation (bug #56752)
John W. Eaton <jwe@octave.org>
parents: 26661
diff changeset
142
26661
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
143 octave_lvalue
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
144 tree_black_hole::lvalue (tree_evaluator& tw)
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
145 {
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
146 octave_lvalue retval (m_sym, tw.get_current_stack_frame ());
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
147
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
148 retval.mark_black_hole ();
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
149
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
150 return retval;
cf9e10ce3351 move variable values from symbol_record objects to stack_frame objects
John W. Eaton <jwe@octave.org>
parents: 26376
diff changeset
151 }
2887
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe]
jwe
parents:
diff changeset
152 }