Mercurial > hg > octave-lyh
annotate src/pt-binop.cc @ 8011:3100283874d7
improve backtrace error messages
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 05 Aug 2008 23:09:32 -0400 |
| parents | 71f068b22fcc |
| children | 73c4516fae10 |
| rev | line source |
|---|---|
| 2980 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 2001, 2002, 2004, 2005, 2006, 2007 |
| 4 John W. Eaton | |
| 2980 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2980 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2980 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include "error.h" | |
| 29 #include "oct-obj.h" | |
| 30 #include "ov.h" | |
| 31 #include "pt-binop.h" | |
| 3770 | 32 #include "pt-bp.h" |
| 2980 | 33 #include "pt-walk.h" |
| 34 | |
| 35 // Binary expressions. | |
| 36 | |
| 37 octave_value_list | |
| 38 tree_binary_expression::rvalue (int nargout) | |
| 39 { | |
| 40 octave_value_list retval; | |
| 41 | |
| 42 if (nargout > 1) | |
| 43 error ("binary operator `%s': invalid number of output arguments", | |
| 44 oper () . c_str ()); | |
| 45 else | |
| 46 retval = rvalue (); | |
| 47 | |
| 48 return retval; | |
| 49 } | |
| 50 | |
| 51 octave_value | |
| 52 tree_binary_expression::rvalue (void) | |
| 53 { | |
| 54 octave_value retval; | |
| 55 | |
| 3770 | 56 MAYBE_DO_BREAKPOINT; |
| 57 | |
| 2980 | 58 if (error_state) |
| 59 return retval; | |
| 60 | |
| 61 if (op_lhs) | |
| 62 { | |
| 63 octave_value a = op_lhs->rvalue (); | |
| 64 | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
65 if (! error_state && a.is_defined () && op_rhs) |
| 2980 | 66 { |
| 67 octave_value b = op_rhs->rvalue (); | |
| 68 | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
69 if (! error_state && b.is_defined ()) |
| 2980 | 70 { |
| 71 retval = ::do_binary_op (etype, a, b); | |
| 72 | |
| 73 if (error_state) | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
74 retval = octave_value (); |
| 2980 | 75 } |
| 76 } | |
| 77 } | |
| 78 | |
| 79 return retval; | |
| 80 } | |
| 81 | |
| 3536 | 82 std::string |
| 2980 | 83 tree_binary_expression::oper (void) const |
| 84 { | |
| 85 return octave_value::binary_op_as_string (etype); | |
| 86 } | |
| 87 | |
| 5861 | 88 tree_expression * |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
89 tree_binary_expression::dup (symbol_table::scope_id scope, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
90 symbol_table::context_id context) |
| 5861 | 91 { |
| 92 tree_binary_expression *new_be | |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
93 = new tree_binary_expression (op_lhs ? op_lhs->dup (scope, context) : 0, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
94 op_rhs ? op_rhs->dup (scope, context) : 0, |
| 5861 | 95 line (), column (), etype); |
| 96 | |
| 97 new_be->copy_base (*this); | |
| 98 | |
| 99 return new_be; | |
| 100 } | |
| 101 | |
| 2980 | 102 void |
| 103 tree_binary_expression::accept (tree_walker& tw) | |
| 104 { | |
| 105 tw.visit_binary_expression (*this); | |
| 106 } | |
| 107 | |
| 108 // Boolean expressions. | |
| 109 | |
| 110 octave_value_list | |
| 111 tree_boolean_expression::rvalue (int nargout) | |
| 112 { | |
| 113 octave_value_list retval; | |
| 114 | |
| 3770 | 115 MAYBE_DO_BREAKPOINT; |
| 116 | |
| 2980 | 117 if (nargout > 1) |
| 118 error ("binary operator `%s': invalid number of output arguments", | |
| 119 oper () . c_str ()); | |
| 120 else | |
| 121 retval = rvalue (); | |
| 122 | |
| 123 return retval; | |
| 124 } | |
| 125 | |
| 126 octave_value | |
| 127 tree_boolean_expression::rvalue (void) | |
| 128 { | |
| 129 octave_value retval; | |
| 130 | |
| 131 if (error_state) | |
| 132 return retval; | |
| 133 | |
| 134 bool result = false; | |
| 135 | |
| 136 if (op_lhs) | |
| 137 { | |
| 138 octave_value a = op_lhs->rvalue (); | |
| 139 | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
140 if (! error_state) |
| 2980 | 141 { |
| 142 bool a_true = a.is_true (); | |
| 143 | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
144 if (! error_state) |
| 2980 | 145 { |
| 146 if (a_true) | |
| 147 { | |
| 148 if (etype == bool_or) | |
| 149 { | |
| 150 result = true; | |
| 151 goto done; | |
| 152 } | |
| 153 } | |
| 154 else | |
| 155 { | |
| 156 if (etype == bool_and) | |
| 157 goto done; | |
| 158 } | |
| 159 | |
| 160 if (op_rhs) | |
| 161 { | |
| 162 octave_value b = op_rhs->rvalue (); | |
| 163 | |
|
8011
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
164 if (! error_state) |
|
3100283874d7
improve backtrace error messages
John W. Eaton <jwe@octave.org>
parents:
7767
diff
changeset
|
165 result = b.is_true (); |
| 2980 | 166 } |
| 167 | |
| 168 done: | |
| 169 | |
| 170 if (! error_state) | |
| 3798 | 171 retval = octave_value (result); |
| 2980 | 172 } |
| 173 } | |
| 174 } | |
| 175 | |
| 176 return retval; | |
| 177 } | |
| 178 | |
| 3536 | 179 std::string |
| 2980 | 180 tree_boolean_expression::oper (void) const |
| 181 { | |
| 3523 | 182 std::string retval = "<unknown>"; |
| 2980 | 183 |
| 184 switch (etype) | |
| 185 { | |
| 186 case bool_and: | |
| 187 retval = "&&"; | |
| 188 break; | |
| 189 | |
| 190 case bool_or: | |
| 191 retval = "||"; | |
| 192 break; | |
| 193 | |
| 194 default: | |
| 195 break; | |
| 196 } | |
| 197 | |
| 198 return retval; | |
| 199 } | |
| 200 | |
| 5861 | 201 tree_expression * |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
202 tree_boolean_expression::dup (symbol_table::scope_id scope, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
203 symbol_table::context_id context) |
| 5861 | 204 { |
| 205 tree_boolean_expression *new_be | |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
206 = new tree_boolean_expression (op_lhs ? op_lhs->dup (scope, context) : 0, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
207 op_rhs ? op_rhs->dup (scope, context) : 0, |
| 5861 | 208 line (), column (), etype); |
| 209 | |
| 210 new_be->copy_base (*this); | |
| 211 | |
| 212 return new_be; | |
| 213 } | |
| 214 | |
| 2980 | 215 /* |
| 216 ;;; Local Variables: *** | |
| 217 ;;; mode: C++ *** | |
| 218 ;;; End: *** | |
| 219 */ |