Mercurial > octave-nkf
annotate src/pt-binop.h @ 7767:71f068b22fcc
scope and context fixes for function handles
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 07 May 2008 13:45:30 -0400 |
| parents | 745a8299c2b5 |
| children | 3100283874d7 |
| rev | line source |
|---|---|
| 2980 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 2002, 2003, 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 #if !defined (octave_tree_binop_h) | |
| 25 #define octave_tree_binop_h 1 | |
| 26 | |
| 27 #include <string> | |
| 28 | |
| 29 class tree_walker; | |
| 30 | |
| 31 class octave_value; | |
| 32 class octave_value_list; | |
| 33 class octave_lvalue; | |
| 34 | |
| 35 #include "ov.h" | |
| 36 #include "pt-exp.h" | |
| 7336 | 37 #include "symtab.h" |
| 2980 | 38 |
| 39 // Binary expressions. | |
| 40 | |
| 41 class | |
| 42 tree_binary_expression : public tree_expression | |
| 43 { | |
| 44 public: | |
| 45 | |
| 46 tree_binary_expression (int l = -1, int c = -1, | |
| 47 octave_value::binary_op t | |
| 48 = octave_value::unknown_binary_op) | |
| 49 : tree_expression (l, c), op_lhs (0), op_rhs (0), etype (t) { } | |
| 50 | |
| 51 tree_binary_expression (tree_expression *a, tree_expression *b, | |
| 52 int l = -1, int c = -1, | |
| 53 octave_value::binary_op t | |
| 54 = octave_value::unknown_binary_op) | |
| 55 : tree_expression (l, c), op_lhs (a), op_rhs (b), etype (t) { } | |
| 56 | |
| 57 ~tree_binary_expression (void) | |
| 58 { | |
| 59 delete op_lhs; | |
| 60 delete op_rhs; | |
| 61 } | |
| 62 | |
| 4267 | 63 bool has_magic_end (void) const |
| 64 { | |
| 65 return ((op_lhs && op_lhs->has_magic_end ()) | |
| 66 || (op_rhs && op_rhs->has_magic_end ())); | |
| 67 } | |
| 68 | |
| 4023 | 69 bool is_binary_expression (void) const { return true; } |
| 70 | |
| 3933 | 71 bool rvalue_ok (void) const { return true; } |
| 2980 | 72 |
| 73 octave_value rvalue (void); | |
| 74 | |
| 3010 | 75 octave_value_list rvalue (int nargout); |
| 2980 | 76 |
| 77 void eval_error (void); | |
| 78 | |
| 3523 | 79 std::string oper (void) const; |
| 2980 | 80 |
| 4023 | 81 octave_value::binary_op op_type (void) const { return etype; } |
| 82 | |
| 2980 | 83 tree_expression *lhs (void) { return op_lhs; } |
| 84 tree_expression *rhs (void) { return op_rhs; } | |
| 85 | |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
86 tree_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
|
87 symbol_table::context_id context); |
| 5861 | 88 |
| 2980 | 89 void accept (tree_walker& tw); |
| 90 | |
| 91 protected: | |
| 92 | |
| 93 // The operands for the expression. | |
| 94 tree_expression *op_lhs; | |
| 95 tree_expression *op_rhs; | |
| 96 | |
| 97 private: | |
| 98 | |
| 99 // The type of the expression. | |
| 100 octave_value::binary_op etype; | |
| 2988 | 101 |
| 102 // No copying! | |
| 103 | |
| 104 tree_binary_expression (const tree_binary_expression&); | |
| 105 | |
| 106 tree_binary_expression& operator = (const tree_binary_expression&); | |
| 2980 | 107 }; |
| 108 | |
| 109 // Boolean expressions. | |
| 110 | |
| 111 class | |
| 112 tree_boolean_expression : public tree_binary_expression | |
| 113 { | |
| 114 public: | |
| 115 | |
| 116 enum type | |
| 117 { | |
| 118 unknown, | |
| 119 bool_and, | |
| 120 bool_or | |
| 121 }; | |
| 122 | |
| 123 tree_boolean_expression (int l = -1, int c = -1, type t = unknown) | |
| 124 : tree_binary_expression (l, c), etype (t) { } | |
| 125 | |
| 126 tree_boolean_expression (tree_expression *a, tree_expression *b, | |
| 127 int l = -1, int c = -1, type t = unknown) | |
| 128 : tree_binary_expression (a, b, l, c), etype (t) { } | |
| 129 | |
| 130 ~tree_boolean_expression (void) { } | |
| 131 | |
| 4023 | 132 bool is_boolean_expression (void) const { return true; } |
| 133 | |
| 3933 | 134 bool rvalue_ok (void) const { return true; } |
| 2980 | 135 |
| 136 octave_value rvalue (void); | |
| 137 | |
| 138 octave_value_list rvalue (int nargout); | |
| 139 | |
| 3523 | 140 std::string oper (void) const; |
| 2980 | 141 |
| 4023 | 142 type op_type (void) const { return etype; } |
| 143 | |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
144 tree_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
|
145 symbol_table::context_id context); |
| 5861 | 146 |
| 2980 | 147 private: |
| 148 | |
| 149 // The type of the expression. | |
| 150 type etype; | |
| 2988 | 151 |
| 152 // No copying! | |
| 153 | |
| 154 tree_boolean_expression (const tree_boolean_expression&); | |
| 155 | |
| 156 tree_boolean_expression& operator = (const tree_boolean_expression&); | |
| 2980 | 157 }; |
| 158 | |
| 159 #endif | |
| 160 | |
| 161 /* | |
| 162 ;;; Local Variables: *** | |
| 163 ;;; mode: C++ *** | |
| 164 ;;; End: *** | |
| 165 */ |