Mercurial > hg > octave-lyh
annotate libinterp/parse-tree/pt-decl.h @ 17509:5f884a545c06
Fix uminus op support with scalar type
| author | LYH <lyh.kernel@gmail.com> |
|---|---|
| date | Thu, 26 Sep 2013 04:56:03 +0800 |
| parents | 3f43e9d6d86e |
| children |
| rev | line source |
|---|---|
| 2982 | 1 /* |
| 2 | |
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3 Copyright (C) 1996-2012 John W. Eaton |
| 2982 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2982 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 2982 | 20 |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_tree_decl_h) | |
| 24 #define octave_tree_decl_h 1 | |
| 25 | |
| 26 class tree_expression; | |
| 27 class tree_identifier; | |
| 28 | |
| 29 class tree_walker; | |
| 30 | |
| 31 #include <string> | |
| 32 | |
| 4219 | 33 #include "base-list.h" |
| 6215 | 34 #include "oct-lvalue.h" |
| 2982 | 35 #include "pt-cmd.h" |
| 6215 | 36 #include "pt-id.h" |
| 7336 | 37 #include "symtab.h" |
| 2982 | 38 |
| 39 // List of expressions that make up a declaration statement. | |
| 40 | |
| 41 class | |
| 42 tree_decl_elt | |
| 43 { | |
| 44 public: | |
| 45 | |
| 46 tree_decl_elt (tree_identifier *i = 0, tree_expression *e = 0) | |
| 47 : id (i), expr (e) { } | |
| 48 | |
| 49 ~tree_decl_elt (void); | |
| 50 | |
| 6215 | 51 bool eval (void); |
| 52 | |
| 53 bool is_defined (void) { return id ? id->is_defined () : false; } | |
| 54 | |
| 7336 | 55 bool is_variable (void) { return id ? id->is_variable () : false; } |
| 56 | |
| 6215 | 57 void mark_as_formal_parameter (void) |
| 58 { | |
| 59 if (id) | |
| 60 id->mark_as_formal_parameter (); | |
| 61 } | |
| 62 | |
| 63 bool lvalue_ok (void) { return id ? id->lvalue_ok () : false; } | |
| 64 | |
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65 // Do not allow functions to return null values. |
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66 octave_value rvalue1 (int nargout = 1) |
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67 { |
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68 return id ? id->rvalue1 (nargout).storable_value () : octave_value (); |
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69 } |
| 6215 | 70 |
| 71 octave_value_list rvalue (int nargout) | |
| 72 { | |
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73 octave_value_list retval; |
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74 |
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75 if (nargout > 1) |
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76 error ("invalid number of output arguments in declaration list"); |
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77 else |
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78 retval = rvalue1 (nargout); |
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79 |
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80 return retval; |
| 6215 | 81 } |
| 82 | |
| 83 octave_lvalue lvalue (void) { return id ? id->lvalue () : octave_lvalue (); } | |
| 2982 | 84 |
| 85 tree_identifier *ident (void) { return id; } | |
| 86 | |
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87 std::string name (void) { return id ? id->name () : ""; } |
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88 |
| 2982 | 89 tree_expression *expression (void) { return expr; } |
| 90 | |
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91 tree_decl_elt *dup (symbol_table::scope_id scope, |
| 10313 | 92 symbol_table::context_id context) const; |
| 5861 | 93 |
| 2982 | 94 void accept (tree_walker& tw); |
| 95 | |
| 96 private: | |
| 97 | |
| 98 // An identifier to tag with the declared property. | |
| 99 tree_identifier *id; | |
| 100 | |
| 101 // An initializer expression (may be zero); | |
| 102 tree_expression *expr; | |
| 2988 | 103 |
| 104 // No copying! | |
| 105 | |
| 106 tree_decl_elt (const tree_decl_elt&); | |
| 107 | |
| 108 tree_decl_elt& operator = (const tree_decl_elt&); | |
| 2982 | 109 }; |
| 110 | |
| 111 class | |
| 4219 | 112 tree_decl_init_list : public octave_base_list<tree_decl_elt *> |
| 2982 | 113 { |
| 114 public: | |
| 115 | |
| 4219 | 116 tree_decl_init_list (void) { } |
| 2982 | 117 |
| 4219 | 118 tree_decl_init_list (tree_decl_elt *t) { append (t); } |
| 2982 | 119 |
| 120 ~tree_decl_init_list (void) | |
| 121 { | |
| 4219 | 122 while (! empty ()) |
| 10313 | 123 { |
| 124 iterator p = begin (); | |
| 125 delete *p; | |
| 126 erase (p); | |
| 127 } | |
| 2982 | 128 } |
| 129 | |
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130 tree_decl_init_list *dup (symbol_table::scope_id scope, |
| 10313 | 131 symbol_table::context_id context) const; |
| 5861 | 132 |
| 2982 | 133 void accept (tree_walker& tw); |
| 2988 | 134 |
| 135 private: | |
| 136 | |
| 137 // No copying! | |
| 138 | |
| 139 tree_decl_init_list (const tree_decl_init_list&); | |
| 140 | |
| 141 tree_decl_init_list& operator = (const tree_decl_init_list&); | |
| 2982 | 142 }; |
| 143 | |
| 144 // Base class for declaration commands -- global, static, etc. | |
| 145 | |
| 146 class | |
| 147 tree_decl_command : public tree_command | |
| 148 { | |
| 149 public: | |
| 150 | |
| 3523 | 151 tree_decl_command (const std::string& n, int l = -1, int c = -1) |
| 7336 | 152 : tree_command (l, c), cmd_name (n), init_list (0) { } |
| 2982 | 153 |
| 3523 | 154 tree_decl_command (const std::string& n, tree_decl_init_list *t, |
| 10313 | 155 int l = -1, int c = -1) |
| 7336 | 156 : tree_command (l, c), cmd_name (n), init_list (t) { } |
| 2982 | 157 |
| 158 ~tree_decl_command (void); | |
| 159 | |
| 160 tree_decl_init_list *initializer_list (void) { return init_list; } | |
| 161 | |
| 3523 | 162 std::string name (void) { return cmd_name; } |
| 2982 | 163 |
| 164 protected: | |
| 165 | |
| 166 // The name of this command -- global, static, etc. | |
| 3523 | 167 std::string cmd_name; |
| 2982 | 168 |
| 169 // The list of variables or initializers in this declaration command. | |
| 170 tree_decl_init_list *init_list; | |
| 2988 | 171 |
| 172 private: | |
| 173 | |
| 174 // No copying! | |
| 175 | |
| 176 tree_decl_command (const tree_decl_command&); | |
| 177 | |
| 178 tree_decl_command& operator = (const tree_decl_command&); | |
| 2982 | 179 }; |
| 180 | |
| 181 // Global. | |
| 182 | |
| 183 class | |
| 184 tree_global_command : public tree_decl_command | |
| 185 { | |
| 186 public: | |
| 187 | |
| 188 tree_global_command (int l = -1, int c = -1) | |
| 189 : tree_decl_command ("global", l, c) { } | |
| 190 | |
| 191 tree_global_command (tree_decl_init_list *t, int l = -1, int c = -1) | |
| 192 : tree_decl_command ("global", t, l, c) { } | |
| 193 | |
| 194 ~tree_global_command (void) { } | |
| 195 | |
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196 tree_command *dup (symbol_table::scope_id scope, |
| 10313 | 197 symbol_table::context_id context) const; |
| 5861 | 198 |
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199 void accept (tree_walker& tw); |
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200 |
| 2988 | 201 private: |
| 202 | |
| 2989 | 203 static void do_init (tree_decl_elt& elt); |
| 204 | |
| 2988 | 205 // No copying! |
| 206 | |
| 207 tree_global_command (const tree_global_command&); | |
| 208 | |
| 209 tree_global_command& operator = (const tree_global_command&); | |
| 2982 | 210 }; |
| 211 | |
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212 // Persistent. |
| 2982 | 213 |
| 214 class | |
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215 tree_persistent_command : public tree_decl_command |
| 2982 | 216 { |
| 217 public: | |
| 218 | |
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219 tree_persistent_command (int l = -1, int c = -1) |
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220 : tree_decl_command ("persistent", l, c) { } |
| 2982 | 221 |
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222 tree_persistent_command (tree_decl_init_list *t, int l = -1, int c = -1) |
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223 : tree_decl_command ("persistent", t, l, c) { } |
| 2982 | 224 |
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225 ~tree_persistent_command (void) { } |
| 2982 | 226 |
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227 tree_command *dup (symbol_table::scope_id scope, |
| 10313 | 228 symbol_table::context_id context) const; |
| 5861 | 229 |
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230 void accept (tree_walker& tw); |
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231 |
| 2988 | 232 private: |
| 233 | |
| 2989 | 234 static void do_init (tree_decl_elt& elt); |
| 235 | |
| 2988 | 236 // No copying! |
| 237 | |
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238 tree_persistent_command (const tree_persistent_command&); |
| 2988 | 239 |
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240 tree_persistent_command& operator = (const tree_persistent_command&); |
| 2982 | 241 }; |
| 242 | |
| 243 #endif |