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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * An immutable 32-bit signed integer, in the range [-2^31, 2^31 - 1]. | 6 * An immutable 32-bit signed integer, in the range [-2^31, 2^31 - 1]. |
7 * Arithmetic operations may overflow in order to maintain this range. | 7 * Arithmetic operations may overflow in order to maintain this range. |
8 */ | 8 */ |
9 class int32 implements intx { | 9 class int32 implements intx { |
10 | 10 |
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231 if (other is int64) { | 231 if (other is int64) { |
232 return (this.toInt64() ^ other).toInt32(); | 232 return (this.toInt64() ^ other).toInt32(); |
233 } | 233 } |
234 return new int32.fromInt(_i ^ _convert(other)); | 234 return new int32.fromInt(_i ^ _convert(other)); |
235 } | 235 } |
236 | 236 |
237 int32 operator ~() => new int32.fromInt(~_i); | 237 int32 operator ~() => new int32.fromInt(~_i); |
238 | 238 |
239 int32 operator <<(int n) { | 239 int32 operator <<(int n) { |
240 if (n < 0) { | 240 if (n < 0) { |
241 throw new IllegalArgumentException("$n"); | 241 throw new ArgumentError("$n"); |
242 } | 242 } |
243 n &= 31; | 243 n &= 31; |
244 return new int32.fromInt(_i << n); | 244 return new int32.fromInt(_i << n); |
245 } | 245 } |
246 | 246 |
247 int32 operator >>(int n) { | 247 int32 operator >>(int n) { |
248 if (n < 0) { | 248 if (n < 0) { |
249 throw new IllegalArgumentException("$n"); | 249 throw new ArgumentError("$n"); |
250 } | 250 } |
251 n &= 31; | 251 n &= 31; |
252 int value; | 252 int value; |
253 if (_i >= 0) { | 253 if (_i >= 0) { |
254 value = _i >> n; | 254 value = _i >> n; |
255 } else { | 255 } else { |
256 value = (_i >> n) | (0xffffffff << (32 - n)); | 256 value = (_i >> n) | (0xffffffff << (32 - n)); |
257 } | 257 } |
258 return new int32.fromInt(value); | 258 return new int32.fromInt(value); |
259 } | 259 } |
260 | 260 |
261 int32 shiftRightUnsigned(int n) { | 261 int32 shiftRightUnsigned(int n) { |
262 if (n < 0) { | 262 if (n < 0) { |
263 throw new IllegalArgumentException("$n"); | 263 throw new ArgumentError("$n"); |
264 } | 264 } |
265 n &= 31; | 265 n &= 31; |
266 int value; | 266 int value; |
267 if (_i >= 0) { | 267 if (_i >= 0) { |
268 value = _i >> n; | 268 value = _i >> n; |
269 } else { | 269 } else { |
270 value = (_i >> n) & ((1 << (32 - n)) - 1); | 270 value = (_i >> n) & ((1 << (32 - n)) - 1); |
271 } | 271 } |
272 return new int32.fromInt(value); | 272 return new int32.fromInt(value); |
273 } | 273 } |
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345 } | 345 } |
346 | 346 |
347 int toInt() => _i; | 347 int toInt() => _i; |
348 int32 toInt32() => this; | 348 int32 toInt32() => this; |
349 int64 toInt64() => new int64.fromInt(_i); | 349 int64 toInt64() => new int64.fromInt(_i); |
350 | 350 |
351 String toString() => _i.toString(); | 351 String toString() => _i.toString(); |
352 String toHexString() => _i.toRadixString(16); | 352 String toHexString() => _i.toRadixString(16); |
353 String toRadixString(int radix) => _i.toRadixString(radix); | 353 String toRadixString(int radix) => _i.toRadixString(radix); |
354 } | 354 } |
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