Mercurial > octave
annotate libinterp/parse-tree/pt-assign.cc @ 31607:aac27ad79be6 stable
maint: Re-indent code after switch to using namespace macros.
* build-env.h, build-env.in.cc, Cell.h, __betainc__.cc, __eigs__.cc,
__ftp__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __magick_read__.cc,
__pchip_deriv__.cc, amd.cc, base-text-renderer.cc, base-text-renderer.h,
besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.h, call-stack.cc,
call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, dasrt.cc, data.cc,
debug.cc, defaults.cc, defaults.h, det.cc, display.cc, display.h, dlmread.cc,
dynamic-ld.cc, dynamic-ld.h, 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,
file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h,
gcd.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h,
graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, gsvd.cc, gtk-manager.cc,
gtk-manager.h, help.cc, help.h, 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, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
lookup.cc, ls-hdf5.cc, ls-mat4.cc, ls-mat5.cc, lsode.cc, lu.cc, mappers.cc,
matrix_type.cc, max.cc, mex.cc, mexproto.h, mxarray.h, mxtypes.in.h,
oct-errno.in.cc, oct-hdf5-types.cc, oct-hist.cc, oct-hist.h, oct-map.cc,
oct-map.h, oct-opengl.h, oct-prcstrm.h, oct-process.cc, oct-process.h,
oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h,
octave-default-image.h, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc,
pow2.cc, pr-output.cc, psi.cc, qr.cc, quadcc.cc, rand.cc, regexp.cc,
settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xpow.cc,
sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfns.cc, svd.cc,
syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h,
symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h,
text-renderer.cc, text-renderer.h, time.cc, toplev.cc, typecast.cc,
url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h,
variables.cc, variables.h, xdiv.cc, __delaunayn__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audioread.cc, convhulln.cc,
gzip.cc, 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-diag.cc, ov-base-int.cc, ov-base-mat.cc,
ov-base-mat.h, ov-base-scalar.cc, ov-base.cc, ov-base.h, ov-bool-mat.cc,
ov-bool-mat.h, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.h, ov-cell.cc,
ov-ch-mat.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h,
ov-complex.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-dld-fcn.cc,
ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-float.cc,
ov-flt-complex.cc, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-diag.cc,
ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-lazy-idx.cc,
ov-legacy-range.cc, ov-magic-int.cc, ov-mex-fcn.cc, ov-mex-fcn.h,
ov-null-mat.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc,
ov-re-mat.h, ov-re-sparse.cc, ov-scalar.cc, ov-str-mat.cc, ov-struct.cc,
ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, ovl.h,
octave.cc, octave.h, op-b-sbm.cc, op-bm-sbm.cc, op-cs-scm.cc, op-fm-fcm.cc,
op-fs-fcm.cc, op-s-scm.cc, op-scm-cs.cc, op-scm-s.cc, op-sm-cs.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, oct-lvalue.cc, oct-lvalue.h,
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-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:
Re-indent code after switch to using namespace macros.
author | Rik <rik@octave.org> |
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date | Thu, 01 Dec 2022 18:02:15 -0800 |
parents | e88a07dec498 |
children | 597f3ee61a48 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2022 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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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
2980 | 28 #endif |
29 | |
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30 #include <string> |
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32 #include "error.h" | |
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33 #include "oct-lvalue.h" |
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34 #include "ov.h" |
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35 #include "parse.h" |
2982 | 36 #include "pt-arg-list.h" |
2980 | 37 #include "pt-assign.h" |
38 | |
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39 OCTAVE_BEGIN_NAMESPACE(octave) |
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40 |
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41 // Simple assignment expressions. |
2980 | 42 |
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43 tree_simple_assignment::tree_simple_assignment (tree_expression *le, |
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44 tree_expression *re, |
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45 bool plhs, int l, int c, |
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46 octave_value::assign_op t) |
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47 : tree_expression (l, c), m_lhs (le), m_rhs (re), m_preserve (plhs), |
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48 m_ans_assign (), m_etype (t) |
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49 { } |
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51 tree_simple_assignment::~tree_simple_assignment (void) |
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52 { |
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53 if (! m_preserve) |
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54 delete m_lhs; |
2980 | 55 |
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56 delete m_rhs; |
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57 } |
2980 | 58 |
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59 std::string |
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60 tree_simple_assignment::oper (void) const |
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61 { |
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62 return octave_value::assign_op_as_string (m_etype); |
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63 } |
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65 tree_expression * |
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66 tree_simple_assignment::dup (symbol_scope& scope) const |
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67 { |
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68 tree_simple_assignment *new_sa |
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69 = new tree_simple_assignment (m_lhs ? m_lhs->dup (scope) : nullptr, |
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70 m_rhs ? m_rhs->dup (scope) : nullptr, |
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71 m_preserve, m_etype); |
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72 |
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73 new_sa->copy_base (*this); |
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74 |
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75 return new_sa; |
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76 } |
2980 | 77 |
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78 octave_value |
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79 tree_simple_assignment::evaluate (tree_evaluator& tw, int) |
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80 { |
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81 octave_value val; |
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82 |
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83 if (m_rhs) |
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84 { |
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85 try |
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86 { |
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87 octave_lvalue ult = m_lhs->lvalue (tw); |
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88 |
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89 std::list<octave_lvalue> lvalue_list; |
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90 lvalue_list.push_back (ult); |
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91 |
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92 unwind_action act ([&tw] (const std::list<octave_lvalue> *lvl) |
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93 { |
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94 tw.set_lvalue_list (lvl); |
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95 }, tw.lvalue_list ()); |
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96 tw.set_lvalue_list (&lvalue_list); |
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97 |
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98 if (ult.numel () != 1) |
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99 err_invalid_structure_assignment (); |
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100 |
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101 octave_value rhs_val = m_rhs->evaluate (tw); |
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102 |
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103 if (rhs_val.is_undefined ()) |
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104 error ("value on right hand side of assignment is undefined"); |
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105 |
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106 if (rhs_val.is_cs_list ()) |
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107 { |
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108 const octave_value_list lst = rhs_val.list_value (); |
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109 |
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110 if (lst.empty ()) |
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111 error ("invalid number of elements on RHS of assignment"); |
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112 |
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113 rhs_val = lst(0); |
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114 } |
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115 |
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116 ult.assign (m_etype, rhs_val); |
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117 |
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118 if (m_etype == octave_value::op_asn_eq) |
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119 val = rhs_val; |
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120 else |
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121 val = ult.value (); |
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122 |
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123 if (print_result () && tw.statement_printing_enabled ()) |
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124 { |
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125 // We clear any index here so that we can |
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126 // get the new value of the referenced |
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127 // object below, instead of the indexed |
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128 // value (which should be the same as the |
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129 // right hand side value). |
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130 |
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131 ult.clear_index (); |
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132 |
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133 octave_value lhs_val = ult.value (); |
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134 |
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135 octave_value_list args = ovl (lhs_val); |
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136 args.stash_name_tags (string_vector (m_lhs->name ())); |
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137 feval ("display", args); |
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138 } |
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139 } |
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140 catch (index_exception& ie) |
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141 { |
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142 ie.set_var (m_lhs->name ()); |
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143 std::string msg = ie.message (); |
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144 error_with_id (ie.err_id (), "%s", msg.c_str ()); |
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145 } |
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146 } |
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147 |
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148 return val; |
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149 } |
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150 |
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151 // Multi-valued assignment expressions. |
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153 tree_multi_assignment::tree_multi_assignment (tree_argument_list *lst, |
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154 tree_expression *r, |
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155 bool plhs, int l, int c) |
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156 : tree_expression (l, c), m_lhs (lst), m_rhs (r), m_preserve (plhs) |
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157 { } |
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159 tree_multi_assignment::~tree_multi_assignment (void) |
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160 { |
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161 if (! m_preserve) |
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162 delete m_lhs; |
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163 |
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164 delete m_rhs; |
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165 } |
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167 std::string |
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168 tree_multi_assignment::oper (void) const |
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169 { |
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170 return octave_value::assign_op_as_string (op_type ()); |
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171 } |
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173 tree_expression * |
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174 tree_multi_assignment::dup (symbol_scope&) const |
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175 { |
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176 panic_impossible (); |
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177 return nullptr; |
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178 } |
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179 |
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180 octave_value_list |
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181 tree_multi_assignment::evaluate_n (tree_evaluator& tw, int) |
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182 { |
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183 octave_value_list val; |
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184 |
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185 if (m_rhs) |
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186 { |
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187 std::list<octave_lvalue> lvalue_list = tw.make_lvalue_list (m_lhs); |
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188 |
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189 unwind_action act ([&tw] (const std::list<octave_lvalue> *lvl) |
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190 { |
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191 tw.set_lvalue_list (lvl); |
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192 }, tw.lvalue_list ()); |
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193 tw.set_lvalue_list (&lvalue_list); |
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194 |
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195 octave_idx_type n_out = 0; |
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196 |
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197 for (const auto& lval : lvalue_list) |
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198 n_out += lval.numel (); |
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199 |
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200 // The following trick is used to keep rhs_val constant. |
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201 const octave_value_list rhs_val1 = m_rhs->evaluate_n (tw, n_out); |
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202 const octave_value_list rhs_val = (rhs_val1.length () == 1 |
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203 && rhs_val1(0).is_cs_list () |
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204 ? rhs_val1(0).list_value () |
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205 : rhs_val1); |
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206 |
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207 tw.set_lvalue_list (nullptr); |
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208 |
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209 octave_idx_type k = 0; |
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210 |
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211 octave_idx_type n = rhs_val.length (); |
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212 |
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213 // To avoid copying per elements and possible optimizations, we |
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214 // postpone joining the final values. |
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215 std::list<octave_value_list> retval_list; |
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216 |
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217 auto q = m_lhs->begin (); |
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218 |
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219 for (octave_lvalue ult : lvalue_list) |
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220 { |
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221 tree_expression *lhs_elt = *q++; |
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222 |
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223 octave_idx_type nel = ult.numel (); |
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224 |
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225 if (nel != 1) |
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226 { |
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227 // Huge kluge so that wrapper scripts with lines like |
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228 // |
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229 // [varargout{1:nargout}] = fcn (args); |
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230 // |
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231 // or |
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232 // |
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233 // varargout = cell (1, nargout); |
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234 // [varargout{1:nargout}] = fcn (args); |
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235 // |
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236 // or |
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237 // |
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238 // varargout = cell (1, nargout); |
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239 // [varargout{:}] = fcn (args); |
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240 // |
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241 // Will work the same as calling fcn directly when nargout |
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242 // is 0 and fcn produces more than one output even when |
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243 // nargout is 0. See also bug #43813. |
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244 |
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245 if (lvalue_list.size () == 1 && nel == 0 && n > 0 |
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246 && ! ult.is_black_hole () && ult.index_type () == "{" |
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247 && (ult.index_is_empty () |
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248 || (ult.is_defined () && ult.index_is_colon ()))) |
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249 { |
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250 // Convert undefined lvalue with empty index to a cell |
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251 // array with a single value and indexed by 1 to |
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252 // handle a single output. |
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253 |
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254 nel = 1; |
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255 |
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256 ult.define (Cell (1, 1)); |
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257 |
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258 ult.clear_index (); |
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259 std::list<octave_value_list> idx; |
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260 idx.push_back (octave_value_list (octave_value (1))); |
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261 ult.set_index ("{", idx); |
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262 } |
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263 |
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264 if (k + nel > n) |
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265 error ("some elements undefined in return list"); |
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266 |
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267 // This element of the return list expects a |
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268 // comma-separated list of values. Slicing avoids |
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269 // copying. |
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270 |
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271 octave_value_list ovl = rhs_val.slice (k, nel); |
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272 |
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273 ult.assign (octave_value::op_asn_eq, octave_value (ovl)); |
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274 |
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275 retval_list.push_back (ovl); |
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276 |
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277 k += nel; |
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278 } |
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279 else |
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280 { |
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281 if (k < n) |
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282 { |
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283 if (ult.is_black_hole ()) |
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284 { |
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285 k++; |
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286 continue; |
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287 } |
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288 else |
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289 { |
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290 octave_value tmp = rhs_val(k); |
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291 |
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292 if (tmp.is_undefined ()) |
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293 error ("element number %" OCTAVE_IDX_TYPE_FORMAT |
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294 " undefined in return list", k+1); |
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295 |
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296 ult.assign (octave_value::op_asn_eq, tmp); |
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297 |
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298 retval_list.push_back (tmp); |
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299 |
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300 k++; |
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301 } |
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302 } |
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303 else |
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304 { |
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305 // This can happen for a function like |
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306 // |
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307 // function varargout = f () |
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308 // varargout{1} = nargout; |
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309 // endfunction |
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310 // |
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311 // called with |
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312 // |
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313 // [a, ~] = f (); |
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314 // |
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315 // Then the list of of RHS values will contain one |
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316 // element but we are iterating over the list of all |
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317 // RHS values. We shouldn't complain that a value we |
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318 // don't need is missing from the list. |
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319 |
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320 if (! ult.is_black_hole ()) |
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321 error ("element number %" OCTAVE_IDX_TYPE_FORMAT |
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322 " undefined in return list", k+1); |
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323 |
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324 k++; |
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325 continue; |
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326 } |
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327 } |
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328 |
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329 if (print_result () && tw.statement_printing_enabled ()) |
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330 { |
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331 // We clear any index here so that we can get |
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332 // the new value of the referenced object below, |
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333 // instead of the indexed value (which should be |
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334 // the same as the right hand side value). |
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335 |
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336 ult.clear_index (); |
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337 |
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338 octave_value lhs_val = ult.value (); |
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339 |
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340 octave_value_list args = ovl (lhs_val); |
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341 args.stash_name_tags (string_vector (lhs_elt->name ())); |
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342 feval ("display", args); |
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343 } |
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344 } |
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345 |
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346 // Concatenate return values. |
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347 val = retval_list; |
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348 } |
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349 |
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350 return val; |
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351 } |
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352 |
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353 OCTAVE_END_NAMESPACE(octave) |
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355 /* |
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356 %!function varargout = f1 () |
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357 %! varargout{1} = nargout; |
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358 %!endfunction |
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359 %! |
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360 %!test |
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361 %! [a, ~] = f1 (); |
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362 %! assert (a, 2); |
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363 %!test |
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364 %! [a, ~, ~, ~, ~] = f1 (); |
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365 %! assert (a, 5); |
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366 |
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367 %!function [x, y] = f2 () |
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368 %! y = 1; |
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369 %!endfunction |
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370 %! |
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371 %!test |
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372 %! [~, y] = f2 (); |
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373 %! assert (y, 1); |
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374 |
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375 %!function [x, y, varargout] = f3 () |
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376 %! y = 1; |
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377 %! varargout = {2, 3}; |
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378 %!endfunction |
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379 %! |
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380 %!test |
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381 %! [~, y, a, b] = f3 (); |
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382 %! assert ([y, a, b], [1, 2, 3]); |
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383 %!test |
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384 %! [~, y, ~, b] = f3 (); |
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385 %! assert ([y, b], [1, 3]); |
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386 */ |