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annotate libinterp/octave-value/ov-oncleanup.cc @ 31605:e88a07dec498 stable

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maint: Use macros to begin/end C++ namespaces. * oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE, OCTAVE_END_NAMESPACE) that can be used to start/end a namespace. * mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc, __dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc, auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h, besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc, defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc, display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc, ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h, event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc, help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h, inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc, latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h, lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc, ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h, mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc, oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h, oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc, pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc, sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc, variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h, __delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc, cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h, cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h, cdef-utils.cc, cdef-utils.h, ov-base.cc, ov-base.h, ov-bool-mat.cc, ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc, ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h, anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h, pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-vm-eval.cc, pt-walk.cc, pt-walk.h, pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h, range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h, oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h, oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc, randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h, file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h, oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.
author Rik <rik@octave.org>
date Thu, 01 Dec 2022 14:23:45 -0800
parents 670a0d878af1
children 597f3ee61a48
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2010-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include "defun.h"
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31 #include "interpreter.h"
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32 #include "interpreter-private.h"
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33 #include "ov-oncleanup.h"
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34 #include "ov-fcn.h"
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35 #include "ov-usr-fcn.h"
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36 #include "parse.h"
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37 #include "pt-misc.h"
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38
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39 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_oncleanup, "onCleanup",
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40 "onCleanup");
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41
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42 octave_oncleanup::octave_oncleanup (const octave_value& f)
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43 : m_fcn (f)
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44 {
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45 if (f.is_function_handle ())
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46 {
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47 octave_function *fptr = f.function_value (true);
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48 if (! fptr)
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49 error ("onCleanup: no default dispatch for function handle");
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50
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51 octave_user_function *uptr
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52 = dynamic_cast<octave_user_function *> (fptr);
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53
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54 if (uptr != nullptr)
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55 {
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56 octave::tree_parameter_list *pl = uptr->parameter_list ();
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57
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58 if (pl != nullptr && pl->length () > 0)
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59 warning ("onCleanup: cleanup action takes parameters");
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60 }
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61 }
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62 else
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63 {
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64 m_fcn = octave_value ();
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65 error ("onCleanup: argument must be a function handle");
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66 }
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67 }
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68
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69 octave_oncleanup::~octave_oncleanup (void)
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70 {
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71 call_object_destructor ();
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72 }
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73
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74 octave_scalar_map
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75 octave_oncleanup::scalar_map_value (void) const
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76 {
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77 octave_scalar_map retval;
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78 retval.setfield ("task", m_fcn);
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79 return retval;
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80 }
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81
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82 bool
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83 octave_oncleanup::save_ascii (std::ostream& /* os */)
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84 {
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85 warning ("save: unable to save onCleanup variables, skipping");
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86
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87 return true;
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88 }
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89
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90 bool
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91 octave_oncleanup::load_ascii (std::istream& /* is */)
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92 {
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93 // Silently skip object that was not saved
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94 return true;
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95 }
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96
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97 bool
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98 octave_oncleanup::save_binary (std::ostream& /* os */,
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99 bool /* save_as_floats */)
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100 {
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101 warning ("save: unable to save onCleanup variables, skipping");
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102
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103 return true;
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104 }
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105
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106 bool
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107 octave_oncleanup::load_binary (std::istream& /* is */, bool /* swap */,
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108 octave::mach_info::float_format /* fmt */)
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109 {
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110 // Silently skip object that was not saved
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111 return true;
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112 }
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113
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114 bool
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115 octave_oncleanup::save_hdf5 (octave_hdf5_id /* loc_id */,
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116 const char * /* name */,
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117 bool /* save_as_floats */)
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118 {
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119 warning ("save: unable to save onCleanup variables, skipping");
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120
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121 return true;
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122 }
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123
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124 bool
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125 octave_oncleanup::load_hdf5 (octave_hdf5_id /* loc_id */,
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126 const char * /* name */)
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127 {
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128 // Silently skip object that was not saved
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129 return true;
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130 }
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131
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132 void
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133 octave_oncleanup::print (std::ostream& os, bool pr_as_read_syntax)
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134 {
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135 print_raw (os, pr_as_read_syntax);
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136 newline (os);
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137 }
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138
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139 void
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140 octave_oncleanup::print_raw (std::ostream& os, bool pr_as_read_syntax) const
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141 {
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142 os << "onCleanup (";
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143 if (m_fcn.is_defined ())
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144 m_fcn.print_raw (os, pr_as_read_syntax);
23807
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145 os << ')';
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146 }
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147
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148 void
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149 octave_oncleanup::call_object_destructor (void)
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150 {
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151 if (m_fcn.is_undefined ())
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152 return;
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153
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154 octave_value the_fcn = m_fcn;
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155 m_fcn = octave_value ();
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156
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157 octave::unwind_protect frame;
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158
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159 // Clear interrupts.
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160 frame.protect_var (octave_interrupt_state);
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161 octave_interrupt_state = 0;
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162
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163 // Disallow quit().
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diff changeset
164 frame.protect_var (quit_allowed);
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165 quit_allowed = false;
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166
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670a0d878af1 eliminate WHO arguments from interpreter-private functions
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167 octave::interpreter& interp = octave::__get_interpreter__ ();
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168
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169 octave::interpreter_try (frame);
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170
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171 try
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172 {
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173 // Run the actual code.
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174 octave::feval (the_fcn);
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175 }
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176 catch (const octave::interrupt_exception&)
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177 {
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178 interp.recover_from_exception ();
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179
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180 warning ("onCleanup: interrupt occurred in cleanup action");
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181 }
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182 catch (const octave::execution_exception& ee)
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183 {
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184 interp.recover_from_exception ();
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185
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186 std::string msg = ee.message ();
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187
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188 warning ("onCleanup: error caught while executing cleanup function:\n%s\n",
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189 msg.c_str ());
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190
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191 }
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192 catch (const octave::exit_exception&)
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193 {
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194 // This shouldn't happen since we disabled quit above.
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195 warning ("onCleanup: exit disabled while executing cleanup function");
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196 }
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197 catch (...) // Yes, the black hole. We're in a d-tor.
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198 {
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199 // This shouldn't happen, in theory.
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200 warning ("onCleanup: internal error: unhandled exception in cleanup action");
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201 }
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202 }
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diff changeset
203
31605
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Rik <rik@octave.org>
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diff changeset
204 OCTAVE_BEGIN_NAMESPACE(octave)
29958
32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace
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diff changeset
205
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206 DEFUN (onCleanup, args, ,
21966
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diff changeset
207 doc: /* -*- texinfo -*-
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diff changeset
208 @deftypefn {} {@var{obj} =} onCleanup (@var{function})
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diff changeset
209 Create a special object that executes a given function upon destruction.
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diff changeset
210
112b20240c87 move docstrings in C++ files out of C strings and into comments
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diff changeset
211 If the object is copied to multiple variables (or cell or struct array
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diff changeset
212 elements) or returned from a function, @var{function} will be executed after
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diff changeset
213 clearing the last copy of the object. Note that if multiple local onCleanup
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diff changeset
214 variables are created, the order in which they are called is unspecified.
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diff changeset
215 For similar functionality @xref{The unwind_protect Statement}.
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diff changeset
216 @end deftypefn */)
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diff changeset
217 {
20797
492738d32c60 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
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diff changeset
218 if (args.length () != 1)
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219 print_usage ();
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220
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221 return ovl (new octave_oncleanup (args(0)));
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222 }
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223
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224 /*
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225 %!test
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226 %! old_wstate = warning ("query");
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227 %! unwind_protect
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228 %! trigger = onCleanup (@() warning ("on", "__MY_WARNING__"));
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229 %! warning ("off", "__MY_WARNING__");
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230 %! assert ((warning ("query", "__MY_WARNING__")).state, "off");
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231 %! clear trigger;
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232 %! assert ((warning ("query", "__MY_WARNING__")).state, "on");
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233 %! unwind_protect_cleanup
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234 %! warning (old_wstate);
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235 %! end_unwind_protect
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236 */
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237
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238 OCTAVE_END_NAMESPACE(octave)