octave: libinterp/parse-tree/pt-id.h annotate

annotate libinterp/parse-tree/pt-id.h @ 23220:092078913d54

maint: Merge stable to default.

author	John W. Eaton <jwe@octave.org>
date	Wed, 22 Feb 2017 12:58:07 -0500
parents	ef4d915df748 3ac9f9ecfae5
children	c452180ab672

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
23219 3ac9f9ecfae5 maint: Update copyright dates. John W. Eaton <jwe@octave.org> parents: 23083 diff changeset	3 Copyright (C) 1996-2017 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
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: 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
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	9 the Free Software Foundation; either version 3 of the License, or
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: 5861 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5861 diff changeset	19 <http://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
20791 f7084eae3318 maint: Use Octave coding conventions for #if statements. Rik <rik@octave.org> parents: 20542 diff changeset	23 #if ! defined (octave_pt_id_h)
17822 ebb3ef964372 maint: Use common #define syntax "octave_filename_h" in h_files. Rik <rik@octave.org> parents: 17787 diff changeset	24 #define octave_pt_id_h 1
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	25
21244 1473547f50f5 include octave-config.h in public header files John W. Eaton <jwe@octave.org> parents: 20791 diff changeset	26 #include "octave-config.h"
1473547f50f5 include octave-config.h in public header files John W. Eaton <jwe@octave.org> parents: 20791 diff changeset	27
8950 d865363208d6 include <iosfwd> instead of <iostream> in header files John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	28 #include <iosfwd>
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	29 #include <string>
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	30
2943 e6dfc3ea6299 [project @ 1997-05-08 02:31:59 by jwe] jwe parents: 2887 diff changeset	31 class octave_value;
e6dfc3ea6299 [project @ 1997-05-08 02:31:59 by jwe] jwe parents: 2887 diff changeset	32 class octave_value_list;
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	33 class octave_function;
4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	34
15037 56b8eb7c9c04 improvements in parsing classdef John W. Eaton <jwe@octave.org> parents: 14982 diff changeset	35 #include "oct-lvalue.h"
7677 db02cc0ba8f2 handle breakpoints in tree_identifier::do_lookup John W. Eaton <jwe@octave.org> parents: 7336 diff changeset	36 #include "pt-bp.h"
2980 cd5ad3fd8049 [project @ 1997-05-16 01:12:13 by jwe] jwe parents: 2979 diff changeset	37 #include "pt-exp.h"
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	38 #include "symtab.h"
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	39
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	40 namespace octave
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	41 {
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	42 class tree_walker;
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	43
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	44 // Symbols from the symbol table.
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	45
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	46 class tree_identifier : public tree_expression
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	47 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	48 friend class tree_index_expression;
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	49
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	50 public:
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	51
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	52 tree_identifier (int l = -1, int c = -1)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	53 : tree_expression (l, c) { }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	54
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	55 tree_identifier (const symbol_table::symbol_record& s,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	56 int l = -1, int c = -1,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	57 symbol_table::scope_id sc = symbol_table::current_scope ())
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	58 : tree_expression (l, c), sym (s, sc) { }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	59
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	60 // No copying!
4267 7cd865a8c815 [project @ 2003-01-03 15:27:05 by jwe] jwe parents: 4192 diff changeset	61
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	62 tree_identifier (const tree_identifier&) = delete;
22869 f75d289645ec make deleted functions public John W. Eaton <jwe@octave.org> parents: 22868 diff changeset	63
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	64 tree_identifier& operator = (const tree_identifier&) = delete;
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	65
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	66 ~tree_identifier (void) = default;
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	67
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	68 bool has_magic_end (void) const { return (name () == "end"); }
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	69
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	70 bool is_identifier (void) const { return true; }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	71
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	72 // The name doesn't change with scope, so use sym instead of
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	73 // accessing it through sym so that this function may remain const.
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	74 std::string name (void) const { return sym.name (); }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	75
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	76 bool is_defined (void) { return sym->is_defined (); }
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	77
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	78 virtual bool is_variable (void) const { return sym->is_variable (); }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	79
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	80 virtual bool is_black_hole (void) { return false; }
2971 f2be17e6f1ea [project @ 1997-05-15 18:55:44 by jwe] jwe parents: 2960 diff changeset	81
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	82 // Try to find a definition for an identifier. Here's how:
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	83 //
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	84 // * If the identifier is already defined and is a function defined
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	85 // in an function file that has been modified since the last time
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	86 // we parsed it, parse it again.
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	87 //
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	88 // * If the identifier is not defined, try to find a builtin
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	89 // variable or an already compiled function with the same name.
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	90 //
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	91 // * If the identifier is still undefined, try looking for an
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	92 // function file to parse.
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	93 //
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	94 // * On systems that support dynamic linking, we prefer .oct files,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	95 // then .mex files, then .m files.
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	96
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	97 octave_value
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	98 do_lookup (const octave_value_list& args = octave_value_list ())
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	99 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	100 return sym->find (args);
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	101 }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	102
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	103 void mark_global (void) { sym->mark_global (); }
3010 1aeb8869e464 [project @ 1997-06-01 19:24:02 by jwe] jwe parents: 2988 diff changeset	104
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	105 void mark_as_static (void) { sym->init_persistent (); }
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	106
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	107 void mark_as_formal_parameter (void) { sym->mark_formal (); }
3010 1aeb8869e464 [project @ 1997-06-01 19:24:02 by jwe] jwe parents: 2988 diff changeset	108
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	109 // We really need to know whether this symbol referst to a variable
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	110 // or a function, but we may not know that yet.
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	111
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	112 bool lvalue_ok (void) const { return true; }
3010 1aeb8869e464 [project @ 1997-06-01 19:24:02 by jwe] jwe parents: 2988 diff changeset	113
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	114 octave_value rvalue1 (int nargout = 1);
16091 1785493171ac pass lvalue_list to more subsref calls (bug #38374) John W. Eaton <jwe@octave.org> parents: 15236 diff changeset	115
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	116 octave_value_list rvalue (int nargout)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	117 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	118 return rvalue (nargout, 0);
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	119 }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	120
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	121 octave_value_list rvalue (int nargout,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	122 const std::list<octave_lvalue> *lvalue_list);
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	123
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	124 octave_lvalue lvalue (void);
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	125
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	126 void eval_undefined_error (void);
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	127
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	128 void static_workspace_error (void)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	129 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	130 error ("can not add variable \"%s\" to a static workspace",
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	131 name ().c_str ());
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	132 }
15236 44d6ffdf9479 Disallow new variables in nested functions (bug #36271) Max Brister <max@2bass.com> parents: 15195 diff changeset	133
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	134 tree_identifier *dup (symbol_table::scope_id scope,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	135 symbol_table::context_id context) const;
5861 2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe] jwe parents: 5307 diff changeset	136
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	137 void accept (tree_walker& tw);
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	138
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	139 symbol_table::symbol_reference symbol (void) const
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	140 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	141 return sym;
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	142 }
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	143 private:
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	144
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	145 // The symbol record that this identifier references.
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	146 symbol_table::symbol_reference sym;
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	147 };
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7677 diff changeset	148
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	149 class tree_black_hole : public tree_identifier
14913 c7071907a641 Use symbol_record_ref instead of names in JIT Max Brister <max@2bass.com> parents: 14912 diff changeset	150 {
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	151 public:
2988 daa1ed1f5462 [project @ 1997-05-16 07:23:15 by jwe] jwe parents: 2980 diff changeset	152
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	153 tree_black_hole (int l = -1, int c = -1)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	154 : tree_identifier (l, c) { }
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	155
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	156 std::string name (void) const { return "~"; }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	157
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	158 bool is_variable (void) const { return false; }
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	159
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	160 bool is_black_hole (void) { return true; }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	161
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	162 tree_black_hole *dup (symbol_table::scope_id,
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	163 symbol_table::context_id) const
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	164 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	165 return new tree_black_hole;
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	166 }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	167
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	168 octave_lvalue lvalue (void)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	169 {
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	170 return octave_lvalue (); // black hole lvalue
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	171 }
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	172 };
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	173 }
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	174
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	175 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	176
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	177 OCTAVE_DEPRECATED ("use 'octave::tree_identifier' instead")
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	178 typedef octave::tree_identifier tree_identifier;
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	179
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	180 OCTAVE_DEPRECATED ("use 'octave::tree_black_hole' instead")
4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	181 typedef octave::tree_black_hole tree_black_hole;
10206 37a08e0ce2dc support Matlab-style empty output/input arguments Jaroslav Hajek <highegg@gmail.com> parents: 10160 diff changeset	182
2887 4b71bb90c388 [project @ 1997-04-28 01:20:55 by jwe] jwe parents: diff changeset	183 #endif
22407 34ce5be04942 maint: Style check C++ code in libinterp/. Rik <rik@octave.org> parents: 22323 diff changeset	184
23075 4e3d47dc7e25 move parse tree classes inside octave namespace John W. Eaton <jwe@octave.org> parents: 22869 diff changeset	185 #endif

Mercurial > octave

annotate libinterp/parse-tree/pt-id.h @ 23220:092078913d54