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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef V8_TYPES_H_ | 5 #ifndef V8_TYPES_H_ |
| 6 #define V8_TYPES_H_ | 6 #define V8_TYPES_H_ |
| 7 | 7 |
| 8 #include "src/conversions.h" | 8 #include "src/conversions.h" |
| 9 #include "src/handles.h" | 9 #include "src/handles.h" |
| 10 #include "src/objects.h" | 10 #include "src/objects.h" |
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| 194 V(Symbol, 1u << 12 | REPRESENTATION(kTaggedPointer)) \ | 194 V(Symbol, 1u << 12 | REPRESENTATION(kTaggedPointer)) \ |
| 195 V(InternalizedString, 1u << 13 | REPRESENTATION(kTaggedPointer)) \ | 195 V(InternalizedString, 1u << 13 | REPRESENTATION(kTaggedPointer)) \ |
| 196 V(OtherString, 1u << 14 | REPRESENTATION(kTaggedPointer)) \ | 196 V(OtherString, 1u << 14 | REPRESENTATION(kTaggedPointer)) \ |
| 197 V(Simd, 1u << 15 | REPRESENTATION(kTaggedPointer)) \ | 197 V(Simd, 1u << 15 | REPRESENTATION(kTaggedPointer)) \ |
| 198 V(OtherObject, 1u << 17 | REPRESENTATION(kTaggedPointer)) \ | 198 V(OtherObject, 1u << 17 | REPRESENTATION(kTaggedPointer)) \ |
| 199 V(OtherUndetectable, 1u << 16 | REPRESENTATION(kTaggedPointer)) \ | 199 V(OtherUndetectable, 1u << 16 | REPRESENTATION(kTaggedPointer)) \ |
| 200 V(Proxy, 1u << 18 | REPRESENTATION(kTaggedPointer)) \ | 200 V(Proxy, 1u << 18 | REPRESENTATION(kTaggedPointer)) \ |
| 201 V(Function, 1u << 19 | REPRESENTATION(kTaggedPointer)) \ | 201 V(Function, 1u << 19 | REPRESENTATION(kTaggedPointer)) \ |
| 202 V(Internal, 1u << 20 | REPRESENTATION(kTagged | kUntagged)) \ | 202 V(Internal, 1u << 20 | REPRESENTATION(kTagged | kUntagged)) \ |
| 203 \ | 203 \ |
| 204 V(Signed31, kUnsigned30 | kNegative31) \ | 204 V(Signed31, kUnsigned30 | kNegative31) \ |
| 205 V(Signed32, kSigned31 | kOtherUnsigned31 | kOtherSigned32) \ | 205 V(Signed32, kSigned31 | kOtherUnsigned31 | kOtherSigned32) \ |
| 206 V(Negative32, kNegative31 | kOtherSigned32) \ | 206 V(Signed32OrMinusZero, kSigned32 | kMinusZero) \ |
| 207 V(Unsigned31, kUnsigned30 | kOtherUnsigned31) \ | 207 V(Signed32OrMinusZeroOrNaN, kSigned32 | kMinusZero | kNaN) \ |
| 208 V(Unsigned32, kUnsigned30 | kOtherUnsigned31 | \ | 208 V(Negative32, kNegative31 | kOtherSigned32) \ |
| 209 kOtherUnsigned32) \ | 209 V(Unsigned31, kUnsigned30 | kOtherUnsigned31) \ |
| 210 V(Integral32, kSigned32 | kUnsigned32) \ | 210 V(Unsigned32, kUnsigned30 | kOtherUnsigned31 | \ |
| 211 V(PlainNumber, kIntegral32 | kOtherNumber) \ | 211 kOtherUnsigned32) \ |
| 212 V(OrderedNumber, kPlainNumber | kMinusZero) \ | 212 V(Unsigned32OrMinusZero, kUnsigned32 | kMinusZero) \ |
| 213 V(MinusZeroOrNaN, kMinusZero | kNaN) \ | 213 V(Unsigned32OrMinusZeroOrNaN, kUnsigned32 | kMinusZero | kNaN) \ |
| 214 V(Number, kOrderedNumber | kNaN) \ | 214 V(Integral32, kSigned32 | kUnsigned32) \ |
| 215 V(String, kInternalizedString | kOtherString) \ | 215 V(PlainNumber, kIntegral32 | kOtherNumber) \ |
| 216 V(UniqueName, kSymbol | kInternalizedString) \ | 216 V(OrderedNumber, kPlainNumber | kMinusZero) \ |
| 217 V(Name, kSymbol | kString) \ | 217 V(MinusZeroOrNaN, kMinusZero | kNaN) \ |
| 218 V(BooleanOrNumber, kBoolean | kNumber) \ | 218 V(Number, kOrderedNumber | kNaN) \ |
| 219 V(BooleanOrNullOrUndefined, kBoolean | kNull | kUndefined) \ | 219 V(String, kInternalizedString | kOtherString) \ |
| 220 V(NullOrUndefined, kNull | kUndefined) \ | 220 V(UniqueName, kSymbol | kInternalizedString) \ |
| 221 V(Undetectable, kNullOrUndefined | kOtherUndetectable) \ | 221 V(Name, kSymbol | kString) \ |
| 222 V(NumberOrOddball, kNumber | kNullOrUndefined | kBoolean) \ | 222 V(BooleanOrNumber, kBoolean | kNumber) \ |
| 223 V(NumberOrSimdOrString, kNumber | kSimd | kString) \ | 223 V(BooleanOrNullOrUndefined, kBoolean | kNull | kUndefined) \ |
| 224 V(NumberOrString, kNumber | kString) \ | 224 V(NullOrUndefined, kNull | kUndefined) \ |
| 225 V(NumberOrUndefined, kNumber | kUndefined) \ | 225 V(Undetectable, kNullOrUndefined | kOtherUndetectable) \ |
| 226 V(PlainPrimitive, kNumberOrString | kBoolean | kNullOrUndefined) \ | 226 V(NumberOrOddball, kNumber | kNullOrUndefined | kBoolean) \ |
| 227 V(Primitive, kSymbol | kSimd | kPlainPrimitive) \ | 227 V(NumberOrSimdOrString, kNumber | kSimd | kString) \ |
| 228 V(DetectableReceiver, kFunction | kOtherObject | kProxy) \ | 228 V(NumberOrString, kNumber | kString) \ |
| 229 V(Object, kFunction | kOtherObject | kOtherUndetectable) \ | 229 V(NumberOrUndefined, kNumber | kUndefined) \ |
| 230 V(Receiver, kObject | kProxy) \ | 230 V(PlainPrimitive, kNumberOrString | kBoolean | kNullOrUndefined) \ |
| 231 V(StringOrReceiver, kString | kReceiver) \ | 231 V(Primitive, kSymbol | kSimd | kPlainPrimitive) \ |
| 232 V(Unique, kBoolean | kUniqueName | kNull | kUndefined | \ | 232 V(DetectableReceiver, kFunction | kOtherObject | kProxy) \ |
| 233 kReceiver) \ | 233 V(Object, kFunction | kOtherObject | kOtherUndetectable) \ |
| 234 V(NonInternal, kPrimitive | kReceiver) \ | 234 V(Receiver, kObject | kProxy) \ |
| 235 V(NonNumber, kUnique | kString | kInternal) \ | 235 V(StringOrReceiver, kString | kReceiver) \ |
| 236 V(Any, 0xfffffffeu) | 236 V(Unique, kBoolean | kUniqueName | kNull | kUndefined | \ |
| 237 kReceiver) \ |
| 238 V(NonInternal, kPrimitive | kReceiver) \ |
| 239 V(NonNumber, kUnique | kString | kInternal) \ |
| 240 V(Any, 0xfffffffeu) |
| 237 | 241 |
| 238 // clang-format on | 242 // clang-format on |
| 239 | 243 |
| 240 /* | 244 /* |
| 241 * The following diagrams show how integers (in the mathematical sense) are | 245 * The following diagrams show how integers (in the mathematical sense) are |
| 242 * divided among the different atomic numerical types. | 246 * divided among the different atomic numerical types. |
| 243 * | 247 * |
| 244 * ON OS32 N31 U30 OU31 OU32 ON | 248 * ON OS32 N31 U30 OU31 OU32 ON |
| 245 * ______[_______[_______[_______[_______[_______[_______ | 249 * ______[_______[_______[_______[_______[_______[_______ |
| 246 * -2^31 -2^30 0 2^30 2^31 2^32 | 250 * -2^31 -2^30 0 2^30 2^31 2^32 |
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| 965 | 969 |
| 966 bool Narrows(Bounds that) { | 970 bool Narrows(Bounds that) { |
| 967 return that.lower->Is(this->lower) && this->upper->Is(that.upper); | 971 return that.lower->Is(this->lower) && this->upper->Is(that.upper); |
| 968 } | 972 } |
| 969 }; | 973 }; |
| 970 | 974 |
| 971 } // namespace internal | 975 } // namespace internal |
| 972 } // namespace v8 | 976 } // namespace v8 |
| 973 | 977 |
| 974 #endif // V8_TYPES_H_ | 978 #endif // V8_TYPES_H_ |
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