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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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177 | 177 |
178 | 178 |
179 bool Object::IsConsString() { | 179 bool Object::IsConsString() { |
180 if (!this->IsHeapObject()) return false; | 180 if (!this->IsHeapObject()) return false; |
181 uint32_t type = HeapObject::cast(this)->map()->instance_type(); | 181 uint32_t type = HeapObject::cast(this)->map()->instance_type(); |
182 return (type & (kIsNotStringMask | kStringRepresentationMask)) == | 182 return (type & (kIsNotStringMask | kStringRepresentationMask)) == |
183 (kStringTag | kConsStringTag); | 183 (kStringTag | kConsStringTag); |
184 } | 184 } |
185 | 185 |
186 | 186 |
187 bool Object::IsSlicedString() { | |
188 if (!this->IsHeapObject()) return false; | |
189 uint32_t type = HeapObject::cast(this)->map()->instance_type(); | |
190 return (type & (kIsNotStringMask | kStringRepresentationMask)) == | |
antonm
2011/07/27 12:16:39
probably is worth refactoring.
| |
191 (kStringTag | kSlicedStringTag); | |
192 } | |
193 | |
194 | |
187 bool Object::IsSeqString() { | 195 bool Object::IsSeqString() { |
188 if (!IsString()) return false; | 196 if (!IsString()) return false; |
189 return StringShape(String::cast(this)).IsSequential(); | 197 return StringShape(String::cast(this)).IsSequential(); |
190 } | 198 } |
191 | 199 |
192 | 200 |
193 bool Object::IsSeqAsciiString() { | 201 bool Object::IsSeqAsciiString() { |
194 if (!IsString()) return false; | 202 if (!IsString()) return false; |
195 return StringShape(String::cast(this)).IsSequential() && | 203 return StringShape(String::cast(this)).IsSequential() && |
196 String::cast(this)->IsAsciiRepresentation(); | 204 String::cast(this)->IsAsciiRepresentation(); |
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273 return (type & kStringEncodingMask) == kAsciiStringTag || | 281 return (type & kStringEncodingMask) == kAsciiStringTag || |
274 (type & kAsciiDataHintMask) == kAsciiDataHintTag; | 282 (type & kAsciiDataHintMask) == kAsciiDataHintTag; |
275 } | 283 } |
276 | 284 |
277 | 285 |
278 bool StringShape::IsCons() { | 286 bool StringShape::IsCons() { |
279 return (type_ & kStringRepresentationMask) == kConsStringTag; | 287 return (type_ & kStringRepresentationMask) == kConsStringTag; |
280 } | 288 } |
281 | 289 |
282 | 290 |
291 bool StringShape::IsSliced() { | |
292 return (type_ & kStringRepresentationMask) == kSlicedStringTag; | |
293 } | |
294 | |
295 | |
283 bool StringShape::IsExternal() { | 296 bool StringShape::IsExternal() { |
284 return (type_ & kStringRepresentationMask) == kExternalStringTag; | 297 return (type_ & kStringRepresentationMask) == kExternalStringTag; |
285 } | 298 } |
286 | 299 |
287 | 300 |
288 bool StringShape::IsSequential() { | 301 bool StringShape::IsSequential() { |
289 return (type_ & kStringRepresentationMask) == kSeqStringTag; | 302 return (type_ & kStringRepresentationMask) == kSeqStringTag; |
290 } | 303 } |
291 | 304 |
292 | 305 |
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2034 CAST_ACCESSOR(JSFunctionResultCache) | 2047 CAST_ACCESSOR(JSFunctionResultCache) |
2035 CAST_ACCESSOR(NormalizedMapCache) | 2048 CAST_ACCESSOR(NormalizedMapCache) |
2036 CAST_ACCESSOR(CompilationCacheTable) | 2049 CAST_ACCESSOR(CompilationCacheTable) |
2037 CAST_ACCESSOR(CodeCacheHashTable) | 2050 CAST_ACCESSOR(CodeCacheHashTable) |
2038 CAST_ACCESSOR(PolymorphicCodeCacheHashTable) | 2051 CAST_ACCESSOR(PolymorphicCodeCacheHashTable) |
2039 CAST_ACCESSOR(MapCache) | 2052 CAST_ACCESSOR(MapCache) |
2040 CAST_ACCESSOR(String) | 2053 CAST_ACCESSOR(String) |
2041 CAST_ACCESSOR(SeqString) | 2054 CAST_ACCESSOR(SeqString) |
2042 CAST_ACCESSOR(SeqAsciiString) | 2055 CAST_ACCESSOR(SeqAsciiString) |
2043 CAST_ACCESSOR(SeqTwoByteString) | 2056 CAST_ACCESSOR(SeqTwoByteString) |
2057 CAST_ACCESSOR(SlicedString) | |
2044 CAST_ACCESSOR(ConsString) | 2058 CAST_ACCESSOR(ConsString) |
2045 CAST_ACCESSOR(ExternalString) | 2059 CAST_ACCESSOR(ExternalString) |
2046 CAST_ACCESSOR(ExternalAsciiString) | 2060 CAST_ACCESSOR(ExternalAsciiString) |
2047 CAST_ACCESSOR(ExternalTwoByteString) | 2061 CAST_ACCESSOR(ExternalTwoByteString) |
2048 CAST_ACCESSOR(JSReceiver) | 2062 CAST_ACCESSOR(JSReceiver) |
2049 CAST_ACCESSOR(JSObject) | 2063 CAST_ACCESSOR(JSObject) |
2050 CAST_ACCESSOR(Smi) | 2064 CAST_ACCESSOR(Smi) |
2051 CAST_ACCESSOR(HeapObject) | 2065 CAST_ACCESSOR(HeapObject) |
2052 CAST_ACCESSOR(HeapNumber) | 2066 CAST_ACCESSOR(HeapNumber) |
2053 CAST_ACCESSOR(Oddball) | 2067 CAST_ACCESSOR(Oddball) |
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2149 return SeqAsciiString::cast(this)->SeqAsciiStringGet(index); | 2163 return SeqAsciiString::cast(this)->SeqAsciiStringGet(index); |
2150 case kSeqStringTag | kTwoByteStringTag: | 2164 case kSeqStringTag | kTwoByteStringTag: |
2151 return SeqTwoByteString::cast(this)->SeqTwoByteStringGet(index); | 2165 return SeqTwoByteString::cast(this)->SeqTwoByteStringGet(index); |
2152 case kConsStringTag | kAsciiStringTag: | 2166 case kConsStringTag | kAsciiStringTag: |
2153 case kConsStringTag | kTwoByteStringTag: | 2167 case kConsStringTag | kTwoByteStringTag: |
2154 return ConsString::cast(this)->ConsStringGet(index); | 2168 return ConsString::cast(this)->ConsStringGet(index); |
2155 case kExternalStringTag | kAsciiStringTag: | 2169 case kExternalStringTag | kAsciiStringTag: |
2156 return ExternalAsciiString::cast(this)->ExternalAsciiStringGet(index); | 2170 return ExternalAsciiString::cast(this)->ExternalAsciiStringGet(index); |
2157 case kExternalStringTag | kTwoByteStringTag: | 2171 case kExternalStringTag | kTwoByteStringTag: |
2158 return ExternalTwoByteString::cast(this)->ExternalTwoByteStringGet(index); | 2172 return ExternalTwoByteString::cast(this)->ExternalTwoByteStringGet(index); |
2173 case kSlicedStringTag | kAsciiStringTag: | |
2174 case kSlicedStringTag | kTwoByteStringTag: | |
2175 return SlicedString::cast(this)->SlicedStringGet(index); | |
2159 default: | 2176 default: |
2160 break; | 2177 break; |
2161 } | 2178 } |
2162 | 2179 |
2163 UNREACHABLE(); | 2180 UNREACHABLE(); |
2164 return 0; | 2181 return 0; |
2165 } | 2182 } |
2166 | 2183 |
2167 | 2184 |
2168 void String::Set(int index, uint16_t value) { | 2185 void String::Set(int index, uint16_t value) { |
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2236 int SeqTwoByteString::SeqTwoByteStringSize(InstanceType instance_type) { | 2253 int SeqTwoByteString::SeqTwoByteStringSize(InstanceType instance_type) { |
2237 return SizeFor(length()); | 2254 return SizeFor(length()); |
2238 } | 2255 } |
2239 | 2256 |
2240 | 2257 |
2241 int SeqAsciiString::SeqAsciiStringSize(InstanceType instance_type) { | 2258 int SeqAsciiString::SeqAsciiStringSize(InstanceType instance_type) { |
2242 return SizeFor(length()); | 2259 return SizeFor(length()); |
2243 } | 2260 } |
2244 | 2261 |
2245 | 2262 |
2263 String* SlicedString::parent() { | |
2264 return String::cast(READ_FIELD(this, kParentOffset)); | |
2265 } | |
2266 | |
2267 | |
2268 void SlicedString::set_parent(String* parent, WriteBarrierMode mode) { | |
2269 WRITE_FIELD(this, kParentOffset, parent); | |
antonm
2011/07/27 12:16:39
maybe add an assert that parent is never a sliced
| |
2270 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kParentOffset, mode); | |
2271 } | |
2272 | |
2273 | |
2274 SMI_ACCESSORS(SlicedString, offset, kOffsetOffset) | |
2275 | |
2276 | |
2246 String* ConsString::first() { | 2277 String* ConsString::first() { |
2247 return String::cast(READ_FIELD(this, kFirstOffset)); | 2278 return String::cast(READ_FIELD(this, kFirstOffset)); |
2248 } | 2279 } |
2249 | 2280 |
2250 | 2281 |
2251 Object* ConsString::unchecked_first() { | 2282 Object* ConsString::unchecked_first() { |
2252 return READ_FIELD(this, kFirstOffset); | 2283 return READ_FIELD(this, kFirstOffset); |
2253 } | 2284 } |
2254 | 2285 |
2255 | 2286 |
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4511 #undef WRITE_INT_FIELD | 4542 #undef WRITE_INT_FIELD |
4512 #undef READ_SHORT_FIELD | 4543 #undef READ_SHORT_FIELD |
4513 #undef WRITE_SHORT_FIELD | 4544 #undef WRITE_SHORT_FIELD |
4514 #undef READ_BYTE_FIELD | 4545 #undef READ_BYTE_FIELD |
4515 #undef WRITE_BYTE_FIELD | 4546 #undef WRITE_BYTE_FIELD |
4516 | 4547 |
4517 | 4548 |
4518 } } // namespace v8::internal | 4549 } } // namespace v8::internal |
4519 | 4550 |
4520 #endif // V8_OBJECTS_INL_H_ | 4551 #endif // V8_OBJECTS_INL_H_ |
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