rossberg@chromium.org | 994edf6 | 2012-02-06 10:12:55 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_PROPERTY_H_ |
| 29 | #define V8_PROPERTY_H_ |
| 30 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 31 | #include "allocation.h" |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 32 | #include "transitions.h" |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 33 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 34 | namespace v8 { |
| 35 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 36 | |
| 37 | |
| 38 | // Abstraction for elements in instance-descriptor arrays. |
| 39 | // |
| 40 | // Each descriptor has a key, property attributes, property type, |
| 41 | // property index (in the actual instance-descriptor array) and |
| 42 | // optionally a piece of data. |
| 43 | // |
| 44 | |
| 45 | class Descriptor BASE_EMBEDDED { |
| 46 | public: |
| 47 | static int IndexFromValue(Object* value) { |
| 48 | return Smi::cast(value)->value(); |
| 49 | } |
| 50 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 51 | MUST_USE_RESULT MaybeObject* KeyToSymbol() { |
ager@chromium.org | 870a0b6 | 2008-11-04 11:43:05 +0000 | [diff] [blame] | 52 | if (!StringShape(key_).IsSymbol()) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 53 | MaybeObject* maybe_result = HEAP->LookupSymbol(key_); |
| 54 | if (!maybe_result->To(&key_)) return maybe_result; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 55 | } |
| 56 | return key_; |
| 57 | } |
| 58 | |
| 59 | String* GetKey() { return key_; } |
| 60 | Object* GetValue() { return value_; } |
| 61 | PropertyDetails GetDetails() { return details_; } |
| 62 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 63 | #ifdef OBJECT_PRINT |
| 64 | void Print(FILE* out); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 65 | #endif |
| 66 | |
| 67 | void SetEnumerationIndex(int index) { |
| 68 | ASSERT(PropertyDetails::IsValidIndex(index)); |
| 69 | details_ = PropertyDetails(details_.attributes(), details_.type(), index); |
| 70 | } |
| 71 | |
| 72 | private: |
| 73 | String* key_; |
| 74 | Object* value_; |
| 75 | PropertyDetails details_; |
| 76 | |
| 77 | protected: |
| 78 | Descriptor() : details_(Smi::FromInt(0)) {} |
| 79 | |
| 80 | void Init(String* key, Object* value, PropertyDetails details) { |
| 81 | key_ = key; |
| 82 | value_ = value; |
| 83 | details_ = details; |
| 84 | } |
| 85 | |
| 86 | Descriptor(String* key, Object* value, PropertyDetails details) |
| 87 | : key_(key), |
| 88 | value_(value), |
| 89 | details_(details) { } |
| 90 | |
| 91 | Descriptor(String* key, |
| 92 | Object* value, |
| 93 | PropertyAttributes attributes, |
| 94 | PropertyType type, |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 95 | int index) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 96 | : key_(key), |
| 97 | value_(value), |
| 98 | details_(attributes, type, index) { } |
| 99 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 100 | friend class DescriptorArray; |
| 101 | }; |
| 102 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 103 | |
| 104 | class FieldDescriptor: public Descriptor { |
| 105 | public: |
| 106 | FieldDescriptor(String* key, |
| 107 | int field_index, |
| 108 | PropertyAttributes attributes, |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 109 | int index = 0) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 110 | : Descriptor(key, Smi::FromInt(field_index), attributes, FIELD, index) {} |
| 111 | }; |
| 112 | |
| 113 | |
| 114 | class ConstantFunctionDescriptor: public Descriptor { |
| 115 | public: |
| 116 | ConstantFunctionDescriptor(String* key, |
| 117 | JSFunction* function, |
| 118 | PropertyAttributes attributes, |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 119 | int index) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 120 | : Descriptor(key, function, attributes, CONSTANT_FUNCTION, index) {} |
| 121 | }; |
| 122 | |
| 123 | |
| 124 | class CallbacksDescriptor: public Descriptor { |
| 125 | public: |
| 126 | CallbacksDescriptor(String* key, |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 127 | Object* foreign, |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 128 | PropertyAttributes attributes, |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 129 | int index = 0) |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 130 | : Descriptor(key, foreign, attributes, CALLBACKS, index) {} |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 131 | }; |
| 132 | |
| 133 | |
| 134 | class LookupResult BASE_EMBEDDED { |
| 135 | public: |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 136 | explicit LookupResult(Isolate* isolate) |
| 137 | : isolate_(isolate), |
| 138 | next_(isolate->top_lookup_result()), |
| 139 | lookup_type_(NOT_FOUND), |
| 140 | holder_(NULL), |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 141 | cacheable_(true), |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 142 | details_(NONE, NONEXISTENT) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 143 | isolate->SetTopLookupResult(this); |
| 144 | } |
| 145 | |
| 146 | ~LookupResult() { |
| 147 | ASSERT(isolate_->top_lookup_result() == this); |
| 148 | isolate_->SetTopLookupResult(next_); |
| 149 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 150 | |
| 151 | void DescriptorResult(JSObject* holder, PropertyDetails details, int number) { |
| 152 | lookup_type_ = DESCRIPTOR_TYPE; |
| 153 | holder_ = holder; |
| 154 | details_ = details; |
| 155 | number_ = number; |
| 156 | } |
| 157 | |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 158 | void TransitionResult(JSObject* holder, int number) { |
| 159 | lookup_type_ = TRANSITION_TYPE; |
| 160 | details_ = PropertyDetails(NONE, TRANSITION); |
| 161 | holder_ = holder; |
| 162 | number_ = number; |
| 163 | } |
| 164 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 165 | void ConstantResult(JSObject* holder) { |
| 166 | lookup_type_ = CONSTANT_TYPE; |
| 167 | holder_ = holder; |
| 168 | details_ = |
| 169 | PropertyDetails(static_cast<PropertyAttributes>(DONT_ENUM | |
| 170 | DONT_DELETE), |
| 171 | CALLBACKS); |
| 172 | number_ = -1; |
| 173 | } |
| 174 | |
| 175 | void DictionaryResult(JSObject* holder, int entry) { |
| 176 | lookup_type_ = DICTIONARY_TYPE; |
| 177 | holder_ = holder; |
| 178 | details_ = holder->property_dictionary()->DetailsAt(entry); |
| 179 | number_ = entry; |
| 180 | } |
| 181 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 182 | void HandlerResult(JSProxy* proxy) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 183 | lookup_type_ = HANDLER_TYPE; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 184 | holder_ = proxy; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 185 | details_ = PropertyDetails(NONE, HANDLER); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 186 | cacheable_ = false; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 187 | } |
| 188 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 189 | void InterceptorResult(JSObject* holder) { |
| 190 | lookup_type_ = INTERCEPTOR_TYPE; |
| 191 | holder_ = holder; |
| 192 | details_ = PropertyDetails(NONE, INTERCEPTOR); |
| 193 | } |
| 194 | |
| 195 | void NotFound() { |
| 196 | lookup_type_ = NOT_FOUND; |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 197 | details_ = PropertyDetails(NONE, NONEXISTENT); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 198 | holder_ = NULL; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 199 | } |
| 200 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 201 | JSObject* holder() { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 202 | ASSERT(IsFound()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 203 | return JSObject::cast(holder_); |
| 204 | } |
| 205 | |
| 206 | JSProxy* proxy() { |
| 207 | ASSERT(IsFound()); |
| 208 | return JSProxy::cast(holder_); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | PropertyType type() { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 212 | ASSERT(IsFound()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 213 | return details_.type(); |
| 214 | } |
| 215 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 216 | PropertyAttributes GetAttributes() { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 217 | ASSERT(!IsTransition()); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 218 | ASSERT(IsFound()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 219 | ASSERT(details_.type() != NONEXISTENT); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 220 | return details_.attributes(); |
| 221 | } |
| 222 | |
| 223 | PropertyDetails GetPropertyDetails() { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 224 | ASSERT(!IsTransition()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 225 | return details_; |
| 226 | } |
| 227 | |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 228 | bool IsFastPropertyType() { |
| 229 | ASSERT(IsFound()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 230 | return IsTransition() || type() != NORMAL; |
| 231 | } |
| 232 | |
| 233 | // Property callbacks does not include transitions to callbacks. |
| 234 | bool IsPropertyCallbacks() { |
| 235 | ASSERT(!(details_.type() == CALLBACKS && !IsFound())); |
| 236 | return details_.type() == CALLBACKS; |
| 237 | } |
| 238 | |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 239 | bool IsReadOnly() { |
| 240 | ASSERT(IsFound()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 241 | ASSERT(!IsTransition()); |
| 242 | ASSERT(details_.type() != NONEXISTENT); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 243 | return details_.IsReadOnly(); |
| 244 | } |
| 245 | |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 246 | bool IsField() { |
| 247 | ASSERT(!(details_.type() == FIELD && !IsFound())); |
| 248 | return details_.type() == FIELD; |
| 249 | } |
| 250 | |
| 251 | bool IsNormal() { |
| 252 | ASSERT(!(details_.type() == NORMAL && !IsFound())); |
| 253 | return details_.type() == NORMAL; |
| 254 | } |
| 255 | |
| 256 | bool IsConstantFunction() { |
| 257 | ASSERT(!(details_.type() == CONSTANT_FUNCTION && !IsFound())); |
| 258 | return details_.type() == CONSTANT_FUNCTION; |
| 259 | } |
| 260 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 261 | bool IsDontDelete() { return details_.IsDontDelete(); } |
| 262 | bool IsDontEnum() { return details_.IsDontEnum(); } |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 263 | bool IsDeleted() { return details_.IsDeleted(); } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 264 | bool IsFound() { return lookup_type_ != NOT_FOUND; } |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 265 | bool IsTransition() { return lookup_type_ == TRANSITION_TYPE; } |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 266 | bool IsHandler() { return lookup_type_ == HANDLER_TYPE; } |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 267 | bool IsInterceptor() { return lookup_type_ == INTERCEPTOR_TYPE; } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 268 | |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 269 | // Is the result is a property excluding transitions and the null descriptor? |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 270 | bool IsProperty() { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 271 | return IsFound() && !IsTransition(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 272 | } |
| 273 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 274 | bool IsCacheable() { return cacheable_; } |
| 275 | void DisallowCaching() { cacheable_ = false; } |
| 276 | |
ager@chromium.org | 3a37e9b | 2009-04-27 09:26:21 +0000 | [diff] [blame] | 277 | Object* GetLazyValue() { |
| 278 | switch (type()) { |
| 279 | case FIELD: |
| 280 | return holder()->FastPropertyAt(GetFieldIndex()); |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 281 | case NORMAL: { |
| 282 | Object* value; |
| 283 | value = holder()->property_dictionary()->ValueAt(GetDictionaryEntry()); |
| 284 | if (holder()->IsGlobalObject()) { |
| 285 | value = JSGlobalPropertyCell::cast(value)->value(); |
| 286 | } |
| 287 | return value; |
| 288 | } |
ager@chromium.org | 3a37e9b | 2009-04-27 09:26:21 +0000 | [diff] [blame] | 289 | case CONSTANT_FUNCTION: |
| 290 | return GetConstantFunction(); |
| 291 | default: |
| 292 | return Smi::FromInt(0); |
| 293 | } |
| 294 | } |
| 295 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame^] | 296 | Map* GetTransitionTarget() { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 297 | ASSERT(IsTransition()); |
| 298 | TransitionArray* transitions = holder()->map()->transitions(); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame^] | 299 | return transitions->GetTarget(number_); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | PropertyDetails GetTransitionDetails(Map* map) { |
| 303 | ASSERT(IsTransition()); |
| 304 | TransitionArray* transitions = map->transitions(); |
| 305 | return transitions->GetTargetDetails(number_); |
| 306 | } |
| 307 | |
| 308 | PropertyDetails GetTransitionDetails() { |
| 309 | return GetTransitionDetails(holder()->map()); |
| 310 | } |
| 311 | |
| 312 | bool IsTransitionToField(Map* map) { |
| 313 | return IsTransition() && GetTransitionDetails(map).type() == FIELD; |
| 314 | } |
| 315 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 316 | Map* GetTransitionMap() { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 317 | ASSERT(IsTransition()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 318 | return Map::cast(GetValue()); |
| 319 | } |
| 320 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 321 | Map* GetTransitionMapFromMap(Map* map) { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 322 | ASSERT(IsTransition()); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame^] | 323 | return map->transitions()->GetTarget(number_); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 324 | } |
| 325 | |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 326 | int GetTransitionIndex() { |
| 327 | ASSERT(IsTransition()); |
| 328 | return number_; |
| 329 | } |
| 330 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 331 | int GetFieldIndex() { |
| 332 | ASSERT(lookup_type_ == DESCRIPTOR_TYPE); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 333 | ASSERT(IsField()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 334 | return Descriptor::IndexFromValue(GetValue()); |
| 335 | } |
| 336 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 337 | int GetLocalFieldIndexFromMap(Map* map) { |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 338 | ASSERT(IsField()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 339 | return Descriptor::IndexFromValue(GetValueFromMap(map)) - |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 340 | map->inobject_properties(); |
| 341 | } |
| 342 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 343 | int GetDictionaryEntry() { |
| 344 | ASSERT(lookup_type_ == DICTIONARY_TYPE); |
| 345 | return number_; |
| 346 | } |
| 347 | |
| 348 | JSFunction* GetConstantFunction() { |
| 349 | ASSERT(type() == CONSTANT_FUNCTION); |
| 350 | return JSFunction::cast(GetValue()); |
| 351 | } |
| 352 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 353 | JSFunction* GetConstantFunctionFromMap(Map* map) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 354 | ASSERT(type() == CONSTANT_FUNCTION); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 355 | return JSFunction::cast(GetValueFromMap(map)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 356 | } |
| 357 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 358 | Object* GetCallbackObject() { |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame^] | 359 | if (lookup_type_ == CONSTANT_TYPE) { |
| 360 | return HEAP->prototype_accessors(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 361 | } |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame^] | 362 | ASSERT(!IsTransition()); |
| 363 | return GetValue(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 364 | } |
| 365 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 366 | #ifdef OBJECT_PRINT |
| 367 | void Print(FILE* out); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 368 | #endif |
| 369 | |
| 370 | Object* GetValue() { |
| 371 | if (lookup_type_ == DESCRIPTOR_TYPE) { |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 372 | return GetValueFromMap(holder()->map()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 373 | } |
| 374 | // In the dictionary case, the data is held in the value field. |
| 375 | ASSERT(lookup_type_ == DICTIONARY_TYPE); |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 376 | return holder()->GetNormalizedProperty(this); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 377 | } |
| 378 | |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 379 | Object* GetValueFromMap(Map* map) const { |
| 380 | ASSERT(lookup_type_ == DESCRIPTOR_TYPE); |
| 381 | return map->instance_descriptors()->GetValue(number_); |
| 382 | } |
| 383 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 384 | void Iterate(ObjectVisitor* visitor); |
| 385 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 386 | private: |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 387 | Isolate* isolate_; |
| 388 | LookupResult* next_; |
| 389 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 390 | // Where did we find the result; |
| 391 | enum { |
| 392 | NOT_FOUND, |
| 393 | DESCRIPTOR_TYPE, |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 394 | TRANSITION_TYPE, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 395 | DICTIONARY_TYPE, |
| 396 | HANDLER_TYPE, |
| 397 | INTERCEPTOR_TYPE, |
| 398 | CONSTANT_TYPE |
| 399 | } lookup_type_; |
| 400 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 401 | JSReceiver* holder_; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 402 | int number_; |
| 403 | bool cacheable_; |
| 404 | PropertyDetails details_; |
| 405 | }; |
| 406 | |
| 407 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 408 | } } // namespace v8::internal |
| 409 | |
| 410 | #endif // V8_PROPERTY_H_ |