Mercurial > octave
annotate liboctave/util/action-container.h @ 31605:e88a07dec498 stable
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 | 796f54d4ddbf |
| children | aac27ad79be6 |
| rev | line source |
|---|---|
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1993-2022 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 //////////////////////////////////////////////////////////////////////// |
| 15396 | 25 |
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26 #if ! defined (octave_action_container_h) |
| 15396 | 27 #define octave_action_container_h 1 |
| 28 | |
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29 #include "octave-config.h" |
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30 |
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31 #include <cstddef> |
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32 #include <functional> |
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33 |
| 15396 | 34 // This class allows registering actions in a list for later |
| 35 // execution, either explicitly or when the container goes out of | |
| 36 // scope. | |
| 37 | |
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38 // FIXME: is there a better name for this class? |
| 15396 | 39 |
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40 OCTAVE_BEGIN_NAMESPACE(octave) |
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41 |
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42 class |
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43 action_container |
| 15396 | 44 { |
| 45 public: | |
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46 |
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47 // A generic unwind_protect element. Knows how to run itself and |
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48 // discard itself. Also, contains a pointer to the next element. |
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49 class elem |
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50 { |
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51 public: |
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52 |
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53 friend class action_container; |
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54 |
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55 elem (void) { } |
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56 |
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57 // No copying! |
| 15396 | 58 |
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59 elem (const elem&) = delete; |
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60 |
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61 elem& operator = (const elem&) = delete; |
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62 |
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63 virtual ~elem (void) = default; |
| 15396 | 64 |
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65 virtual void run (void) { } |
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66 }; |
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67 |
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68 // An element that merely runs a void (*)(void) function. |
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69 |
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70 class fcn_elem : public elem |
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71 { |
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72 public: |
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73 |
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74 // FIXME: Do we need to apply std::forward to the arguments to |
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75 // std::bind here? |
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76 |
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77 template <typename F, typename... Args> |
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78 fcn_elem (F&& fcn, Args&&... args) |
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79 : m_fcn (std::bind (fcn, args...)) |
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80 { } |
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81 |
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82 void run (void) { m_fcn (); } |
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83 |
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84 private: |
| 15396 | 85 |
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86 std::function<void (void)> m_fcn; |
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87 }; |
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88 |
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89 // An element that stores arbitrary variable, and restores it. |
| 15396 | 90 |
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91 template <typename T> |
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92 class restore_var_elem : public elem |
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93 { |
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94 public: |
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95 |
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96 restore_var_elem (T& ref, const T& val) |
| 27177 | 97 : m_ptr (&ref), m_val (val) { } |
| 15396 | 98 |
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99 // No copying! |
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100 |
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101 restore_var_elem (const restore_var_elem&) = delete; |
| 15396 | 102 |
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103 restore_var_elem& operator = (const restore_var_elem&) = delete; |
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104 |
| 27177 | 105 void run (void) { *m_ptr = m_val; } |
| 15396 | 106 |
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107 private: |
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108 |
| 27177 | 109 T *m_ptr, m_val; |
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110 }; |
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111 |
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112 // Deletes a class allocated using new. |
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113 |
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114 template <typename T> |
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115 class delete_ptr_elem : public elem |
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116 { |
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117 public: |
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118 |
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119 delete_ptr_elem (T *ptr) |
| 27177 | 120 : m_ptr (ptr) { } |
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121 |
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122 // No copying! |
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123 |
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124 delete_ptr_elem (const delete_ptr_elem&) = delete; |
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125 |
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126 delete_ptr_elem operator = (const delete_ptr_elem&) = delete; |
| 15396 | 127 |
| 27177 | 128 void run (void) { delete m_ptr; } |
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129 |
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130 private: |
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131 |
| 27177 | 132 T *m_ptr; |
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133 }; |
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134 |
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135 action_container (void) { } |
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136 |
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137 // No copying! |
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138 |
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139 action_container (const action_container&) = delete; |
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140 |
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141 action_container& operator = (const action_container&) = delete; |
| 15396 | 142 |
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143 virtual ~action_container (void) = default; |
| 15396 | 144 |
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145 template <typename F, typename... Args> |
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146 void add (F&& fcn, Args&&... args) |
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147 { |
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148 add_action (new fcn_elem (std::forward<F> (fcn), |
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149 std::forward<Args> (args)...)); |
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150 } |
| 15396 | 151 |
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152 // Use separate template types for function pointer parameter |
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153 // declarations and captured arguments so that differences in |
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154 // const are handled properly. |
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156 template <typename... Params, typename... Args> |
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157 void add_fcn (void (*fcn) (Params...), Args&&... args) |
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158 { |
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159 add_action (new fcn_elem (fcn, std::forward<Args> (args)...)); |
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160 } |
| 15396 | 161 |
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162 template <typename T, typename... Params, typename... Args> |
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163 void add_method (T *obj, void (T::*method) (Params...), Args&&... args) |
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164 { |
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165 add_action (new fcn_elem (method, obj, std::forward<Args> (args)...)); |
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166 } |
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167 |
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168 template <typename T, typename... Params, typename... Args> |
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169 void add_method (T& obj, void (T::*method) (Params...), Args&&... args) |
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170 { |
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171 add_action (new fcn_elem (method, &obj, std::forward<Args> (args)...)); |
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172 } |
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173 |
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174 // Call to delete (T*). |
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175 |
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176 template <typename T> |
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177 void add_delete (T *obj) |
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178 { |
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179 add_action (new delete_ptr_elem<T> (obj)); |
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180 } |
| 15396 | 181 |
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182 // Protect any variable. |
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183 template <typename T> |
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184 void protect_var (T& var) |
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185 { |
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186 add_action (new restore_var_elem<T> (var, var)); |
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187 } |
| 15396 | 188 |
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189 // Protect any variable, value given. |
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190 template <typename T> |
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191 void protect_var (T& var, const T& val) |
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192 { |
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193 add_action (new restore_var_elem<T> (var, val)); |
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194 } |
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195 |
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196 operator bool (void) const { return ! empty (); } |
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198 virtual void run_first (void) = 0; |
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200 OCTAVE_API void run (std::size_t num); |
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202 void run (void) { run (size ()); } |
| 15396 | 203 |
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204 virtual void discard_first (void) = 0; |
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206 void discard (std::size_t num) |
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207 { |
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208 if (num > size ()) |
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209 num = size (); |
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211 for (std::size_t i = 0; i < num; i++) |
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212 discard_first (); |
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213 } |
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215 void discard (void) { discard (size ()); } |
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217 virtual std::size_t size (void) const = 0; |
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219 bool empty (void) const { return size () == 0; } |
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220 |
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221 protected: |
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222 |
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223 virtual void add_action (elem *new_elem) = 0; |
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224 }; |
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225 |
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226 OCTAVE_END_NAMESPACE(octave) |
| 15396 | 227 |
| 228 #endif |