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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 uint32_t representation = | |
antonm
2011/07/27 14:04:49
if you don't want to introduce helper function whi
| |
191 type & (kIsNotStringMask | kStringRepresentationMask); | |
192 return representation == (kStringTag | kSlicedStringTag); | |
193 } | |
194 | |
195 | |
187 bool Object::IsSeqString() { | 196 bool Object::IsSeqString() { |
188 if (!IsString()) return false; | 197 if (!IsString()) return false; |
189 return StringShape(String::cast(this)).IsSequential(); | 198 return StringShape(String::cast(this)).IsSequential(); |
190 } | 199 } |
191 | 200 |
192 | 201 |
193 bool Object::IsSeqAsciiString() { | 202 bool Object::IsSeqAsciiString() { |
194 if (!IsString()) return false; | 203 if (!IsString()) return false; |
195 return StringShape(String::cast(this)).IsSequential() && | 204 return StringShape(String::cast(this)).IsSequential() && |
196 String::cast(this)->IsAsciiRepresentation(); | 205 String::cast(this)->IsAsciiRepresentation(); |
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273 return (type & kStringEncodingMask) == kAsciiStringTag || | 282 return (type & kStringEncodingMask) == kAsciiStringTag || |
274 (type & kAsciiDataHintMask) == kAsciiDataHintTag; | 283 (type & kAsciiDataHintMask) == kAsciiDataHintTag; |
275 } | 284 } |
276 | 285 |
277 | 286 |
278 bool StringShape::IsCons() { | 287 bool StringShape::IsCons() { |
279 return (type_ & kStringRepresentationMask) == kConsStringTag; | 288 return (type_ & kStringRepresentationMask) == kConsStringTag; |
280 } | 289 } |
281 | 290 |
282 | 291 |
292 bool StringShape::IsSliced() { | |
293 return (type_ & kStringRepresentationMask) == kSlicedStringTag; | |
294 } | |
295 | |
296 | |
283 bool StringShape::IsExternal() { | 297 bool StringShape::IsExternal() { |
284 return (type_ & kStringRepresentationMask) == kExternalStringTag; | 298 return (type_ & kStringRepresentationMask) == kExternalStringTag; |
285 } | 299 } |
286 | 300 |
287 | 301 |
288 bool StringShape::IsSequential() { | 302 bool StringShape::IsSequential() { |
289 return (type_ & kStringRepresentationMask) == kSeqStringTag; | 303 return (type_ & kStringRepresentationMask) == kSeqStringTag; |
290 } | 304 } |
291 | 305 |
292 | 306 |
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2034 CAST_ACCESSOR(JSFunctionResultCache) | 2048 CAST_ACCESSOR(JSFunctionResultCache) |
2035 CAST_ACCESSOR(NormalizedMapCache) | 2049 CAST_ACCESSOR(NormalizedMapCache) |
2036 CAST_ACCESSOR(CompilationCacheTable) | 2050 CAST_ACCESSOR(CompilationCacheTable) |
2037 CAST_ACCESSOR(CodeCacheHashTable) | 2051 CAST_ACCESSOR(CodeCacheHashTable) |
2038 CAST_ACCESSOR(PolymorphicCodeCacheHashTable) | 2052 CAST_ACCESSOR(PolymorphicCodeCacheHashTable) |
2039 CAST_ACCESSOR(MapCache) | 2053 CAST_ACCESSOR(MapCache) |
2040 CAST_ACCESSOR(String) | 2054 CAST_ACCESSOR(String) |
2041 CAST_ACCESSOR(SeqString) | 2055 CAST_ACCESSOR(SeqString) |
2042 CAST_ACCESSOR(SeqAsciiString) | 2056 CAST_ACCESSOR(SeqAsciiString) |
2043 CAST_ACCESSOR(SeqTwoByteString) | 2057 CAST_ACCESSOR(SeqTwoByteString) |
2058 CAST_ACCESSOR(SlicedString) | |
2044 CAST_ACCESSOR(ConsString) | 2059 CAST_ACCESSOR(ConsString) |
2045 CAST_ACCESSOR(ExternalString) | 2060 CAST_ACCESSOR(ExternalString) |
2046 CAST_ACCESSOR(ExternalAsciiString) | 2061 CAST_ACCESSOR(ExternalAsciiString) |
2047 CAST_ACCESSOR(ExternalTwoByteString) | 2062 CAST_ACCESSOR(ExternalTwoByteString) |
2048 CAST_ACCESSOR(JSReceiver) | 2063 CAST_ACCESSOR(JSReceiver) |
2049 CAST_ACCESSOR(JSObject) | 2064 CAST_ACCESSOR(JSObject) |
2050 CAST_ACCESSOR(Smi) | 2065 CAST_ACCESSOR(Smi) |
2051 CAST_ACCESSOR(HeapObject) | 2066 CAST_ACCESSOR(HeapObject) |
2052 CAST_ACCESSOR(HeapNumber) | 2067 CAST_ACCESSOR(HeapNumber) |
2053 CAST_ACCESSOR(Oddball) | 2068 CAST_ACCESSOR(Oddball) |
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2149 return SeqAsciiString::cast(this)->SeqAsciiStringGet(index); | 2164 return SeqAsciiString::cast(this)->SeqAsciiStringGet(index); |
2150 case kSeqStringTag | kTwoByteStringTag: | 2165 case kSeqStringTag | kTwoByteStringTag: |
2151 return SeqTwoByteString::cast(this)->SeqTwoByteStringGet(index); | 2166 return SeqTwoByteString::cast(this)->SeqTwoByteStringGet(index); |
2152 case kConsStringTag | kAsciiStringTag: | 2167 case kConsStringTag | kAsciiStringTag: |
2153 case kConsStringTag | kTwoByteStringTag: | 2168 case kConsStringTag | kTwoByteStringTag: |
2154 return ConsString::cast(this)->ConsStringGet(index); | 2169 return ConsString::cast(this)->ConsStringGet(index); |
2155 case kExternalStringTag | kAsciiStringTag: | 2170 case kExternalStringTag | kAsciiStringTag: |
2156 return ExternalAsciiString::cast(this)->ExternalAsciiStringGet(index); | 2171 return ExternalAsciiString::cast(this)->ExternalAsciiStringGet(index); |
2157 case kExternalStringTag | kTwoByteStringTag: | 2172 case kExternalStringTag | kTwoByteStringTag: |
2158 return ExternalTwoByteString::cast(this)->ExternalTwoByteStringGet(index); | 2173 return ExternalTwoByteString::cast(this)->ExternalTwoByteStringGet(index); |
2174 case kSlicedStringTag | kAsciiStringTag: | |
2175 case kSlicedStringTag | kTwoByteStringTag: | |
2176 return SlicedString::cast(this)->SlicedStringGet(index); | |
2159 default: | 2177 default: |
2160 break; | 2178 break; |
2161 } | 2179 } |
2162 | 2180 |
2163 UNREACHABLE(); | 2181 UNREACHABLE(); |
2164 return 0; | 2182 return 0; |
2165 } | 2183 } |
2166 | 2184 |
2167 | 2185 |
2168 void String::Set(int index, uint16_t value) { | 2186 void String::Set(int index, uint16_t value) { |
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2181 String* second = ConsString::cast(this)->second(); | 2199 String* second = ConsString::cast(this)->second(); |
2182 // Only flattened strings have second part empty. | 2200 // Only flattened strings have second part empty. |
2183 return second->length() == 0; | 2201 return second->length() == 0; |
2184 } | 2202 } |
2185 default: | 2203 default: |
2186 return true; | 2204 return true; |
2187 } | 2205 } |
2188 } | 2206 } |
2189 | 2207 |
2190 | 2208 |
2209 bool String::IsIndirect() { | |
2210 uint32_t representation = StringShape(this).representation_tag(); | |
2211 return (representation & kIsIndirectStringMask) == kIsIndirectStringTag; | |
2212 } | |
2213 | |
2214 | |
2191 uint16_t SeqAsciiString::SeqAsciiStringGet(int index) { | 2215 uint16_t SeqAsciiString::SeqAsciiStringGet(int index) { |
2192 ASSERT(index >= 0 && index < length()); | 2216 ASSERT(index >= 0 && index < length()); |
2193 return READ_BYTE_FIELD(this, kHeaderSize + index * kCharSize); | 2217 return READ_BYTE_FIELD(this, kHeaderSize + index * kCharSize); |
2194 } | 2218 } |
2195 | 2219 |
2196 | 2220 |
2197 void SeqAsciiString::SeqAsciiStringSet(int index, uint16_t value) { | 2221 void SeqAsciiString::SeqAsciiStringSet(int index, uint16_t value) { |
2198 ASSERT(index >= 0 && index < length() && value <= kMaxAsciiCharCode); | 2222 ASSERT(index >= 0 && index < length() && value <= kMaxAsciiCharCode); |
2199 WRITE_BYTE_FIELD(this, kHeaderSize + index * kCharSize, | 2223 WRITE_BYTE_FIELD(this, kHeaderSize + index * kCharSize, |
2200 static_cast<byte>(value)); | 2224 static_cast<byte>(value)); |
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2236 int SeqTwoByteString::SeqTwoByteStringSize(InstanceType instance_type) { | 2260 int SeqTwoByteString::SeqTwoByteStringSize(InstanceType instance_type) { |
2237 return SizeFor(length()); | 2261 return SizeFor(length()); |
2238 } | 2262 } |
2239 | 2263 |
2240 | 2264 |
2241 int SeqAsciiString::SeqAsciiStringSize(InstanceType instance_type) { | 2265 int SeqAsciiString::SeqAsciiStringSize(InstanceType instance_type) { |
2242 return SizeFor(length()); | 2266 return SizeFor(length()); |
2243 } | 2267 } |
2244 | 2268 |
2245 | 2269 |
2270 String* SlicedString::parent() { | |
2271 return String::cast(READ_FIELD(this, kParentOffset)); | |
2272 } | |
2273 | |
2274 | |
2275 void SlicedString::set_parent(String* parent) { | |
2276 ASSERT(parent->IsSeqString()); | |
2277 WRITE_FIELD(this, kParentOffset, parent); | |
2278 } | |
2279 | |
2280 | |
2281 SMI_ACCESSORS(SlicedString, offset, kOffsetOffset) | |
2282 | |
2283 | |
2246 String* ConsString::first() { | 2284 String* ConsString::first() { |
2247 return String::cast(READ_FIELD(this, kFirstOffset)); | 2285 return String::cast(READ_FIELD(this, kFirstOffset)); |
2248 } | 2286 } |
2249 | 2287 |
2250 | 2288 |
2251 Object* ConsString::unchecked_first() { | 2289 Object* ConsString::unchecked_first() { |
2252 return READ_FIELD(this, kFirstOffset); | 2290 return READ_FIELD(this, kFirstOffset); |
2253 } | 2291 } |
2254 | 2292 |
2255 | 2293 |
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4511 #undef WRITE_INT_FIELD | 4549 #undef WRITE_INT_FIELD |
4512 #undef READ_SHORT_FIELD | 4550 #undef READ_SHORT_FIELD |
4513 #undef WRITE_SHORT_FIELD | 4551 #undef WRITE_SHORT_FIELD |
4514 #undef READ_BYTE_FIELD | 4552 #undef READ_BYTE_FIELD |
4515 #undef WRITE_BYTE_FIELD | 4553 #undef WRITE_BYTE_FIELD |
4516 | 4554 |
4517 | 4555 |
4518 } } // namespace v8::internal | 4556 } } // namespace v8::internal |
4519 | 4557 |
4520 #endif // V8_OBJECTS_INL_H_ | 4558 #endif // V8_OBJECTS_INL_H_ |
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