Mercurial > hg > octave-lyh
annotate scripts/miscellaneous/substruct.m @ 9774:fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
| author | David Grundberg <davidg@cs.umu.se> |
|---|---|
| date | Tue, 03 Nov 2009 08:52:00 +0100 |
| parents | a1dbe9d80eee |
| children | 9d1a14e12431 |
| rev | line source |
|---|---|
| 7017 | 1 ## Copyright (C) 2006, 2007 John W. Eaton |
| 6167 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 6167 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 6167 | 18 |
| 19 ## -*- texinfo -*- | |
| 6744 | 20 ## @deftypefn {Function File} {} substruct (@var{type}, @var{subs}, @dots{}) |
| 6167 | 21 ## Create a subscript structure for use with @code{subsref} or |
| 22 ## @code{subsasgn}. | |
| 23 ## @seealso{subsref, subsasgn} | |
| 24 ## @end deftypefn | |
| 25 | |
| 26 ## Author: jwe | |
| 27 | |
| 28 function retval = substruct (varargin) | |
| 29 | |
| 30 nargs = nargin; | |
| 31 | |
| 32 if (nargs > 1 && mod (nargs, 2) == 0) | |
| 33 narg_pairs = nargs / 2; | |
|
9774
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
34 typ = cell (1, narg_pairs); |
|
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
35 sub = cell (1, narg_pairs); |
| 6167 | 36 k = 1; |
| 37 for i = 1:2:nargs | |
| 38 t = varargin{i}; | |
| 39 dot = false; | |
| 40 switch (t) | |
| 41 case { "()", "{}" } | |
| 42 case "." | |
| 43 dot = true; | |
| 44 otherwise | |
| 45 error ("substruct: expecting type to be one of \"()\", \"{}\", or \".\""); | |
| 46 endswitch | |
| 47 s = varargin{i+1}; | |
| 48 if (dot) | |
| 49 if (! ischar (s)) | |
| 50 error ("substruct: for type == %s, subs must be a character string", t); | |
| 51 endif | |
| 52 elseif (! (iscell (s) || (ischar (s) && strcmp (s, ":")))) | |
| 53 error ("substruct: for type == %s, subs must be a cell array or \":\"", | |
| 54 t); | |
| 55 endif | |
| 56 typ{k} = t; | |
| 57 sub{k} = s; | |
| 58 k++; | |
| 59 endfor | |
| 60 retval = struct ("type", typ, "subs", sub); | |
| 61 else | |
| 62 print_usage (); | |
| 63 endif | |
| 64 | |
| 65 endfunction | |
| 66 | |
| 67 %!test | |
| 68 %! x(1,1).type = "()"; | |
|
9774
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
69 %! x(1,2).type = "{}"; |
|
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
70 %! x(1,3).type = "."; |
| 6167 | 71 %! x(1,1).subs = {1,2,3}; |
|
9774
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
72 %! x(1,2).subs = ":"; |
|
fbf15a0f30f0
Call user-defined subsref/subsasgn with 1xN structs instead of Nx1
David Grundberg <davidg@cs.umu.se>
parents:
7017
diff
changeset
|
73 %! x(1,3).subs = "foo"; |
| 6167 | 74 %! y = substruct ("()", {1,2,3}, "{}", ":", ".", "foo"); |
| 75 %! assert(x,y); | |
| 76 %!error assert(substruct); | |
| 77 %!error assert(substruct (1, 2, 3)); | |
| 78 %!error assert(substruct ("x", 1)); | |
| 79 %!error assert(substruct ("()", [1,2,3])); | |
| 80 %!error assert(substruct (".", {1,2,3})); |