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1 // tree-const.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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26 #endif |
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27 |
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28 #if defined (__GNUG__) |
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29 #pragma implementation |
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30 #endif |
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31 |
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32 #include <iostream.h> |
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33 |
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34 #include "tree-const.h" |
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35 #include "error.h" |
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36 #include "gripes.h" |
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37 #include "user-prefs.h" |
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38 |
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39 tree_constant::~tree_constant (void) |
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40 { |
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41 #if defined (MDEBUG) |
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42 cerr << "~tree_constant: rep: " << rep |
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43 << " rep->count: " << rep->count << "\n"; |
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44 #endif |
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45 |
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46 if (--rep->count <= 0) |
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47 { |
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48 delete rep; |
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49 rep = 0; |
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50 } |
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51 } |
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52 |
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53 #if defined (MDEBUG) |
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54 void * |
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55 tree_constant::operator new (size_t size) |
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56 { |
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57 tree_constant *p = ::new tree_constant; |
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58 cerr << "tree_constant::new(): " << p << "\n"; |
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59 return p; |
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60 } |
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61 |
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62 void |
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63 tree_constant::operator delete (void *p, size_t size) |
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64 { |
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65 cerr << "tree_constant::delete(): " << p << "\n"; |
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66 ::delete p; |
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67 } |
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68 #endif |
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69 |
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70 // Construct return vector of empty matrices. Return empty matrices |
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71 // and/or gripe when appropriate. |
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72 |
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73 Octave_object |
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74 vector_of_empties (int nargout, const char *fcn_name) |
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75 { |
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76 Octave_object retval; |
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77 |
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78 // Got an empty argument, check if should gripe/return empty values. |
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79 |
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80 int flag = user_pref.propagate_empty_matrices; |
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81 if (flag != 0) |
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82 { |
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83 if (flag < 0) |
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84 gripe_empty_arg (fcn_name, 0); |
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85 |
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86 Matrix m; |
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87 retval.resize (nargout ? nargout : 1); |
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88 for (int i = 0; i < nargout; i++) |
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89 retval(i) = m; |
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90 } |
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91 else |
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92 gripe_empty_arg (fcn_name, 1); |
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93 |
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94 return retval; |
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95 } |
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96 |
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97 void |
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98 tree_constant::print_code (ostream& os) |
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99 { |
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100 print_code_indent (os); |
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101 |
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102 if (in_parens) |
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103 os << "("; |
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104 |
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105 if (rep) |
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106 rep->print_code (os); |
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107 |
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108 if (in_parens) |
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109 os << ")"; |
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110 } |
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111 |
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112 /* |
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113 ;;; Local Variables: *** |
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114 ;;; mode: C++ *** |
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115 ;;; page-delimiter: "^/\\*" *** |
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116 ;;; End: *** |
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117 */ |
