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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 part of dart2js; | 5 part of dart2js; |
6 | 6 |
7 abstract class ConstantVisitor<R> { | 7 abstract class ConstantVisitor<R> { |
8 R visitFunction(FunctionConstant constant); | 8 R visitFunction(FunctionConstant constant); |
9 R visitNull(NullConstant constant); | 9 R visitNull(NullConstant constant); |
10 R visitInt(IntConstant constant); | 10 R visitInt(IntConstant constant); |
11 R visitDouble(DoubleConstant constant); | 11 R visitDouble(DoubleConstant constant); |
12 R visitTrue(TrueConstant constant); | 12 R visitTrue(TrueConstant constant); |
13 R visitFalse(FalseConstant constant); | 13 R visitFalse(FalseConstant constant); |
14 R visitString(StringConstant constant); | 14 R visitString(StringConstant constant); |
15 R visitList(ListConstant constant); | 15 R visitList(ListConstant constant); |
16 R visitMap(MapConstant constant); | 16 R visitMap(MapConstant constant); |
17 R visitConstructed(ConstructedConstant constant); | 17 R visitConstructed(ConstructedConstant constant); |
18 R visitType(TypeConstant constant); | 18 R visitType(TypeConstant constant); |
19 R visitInterceptor(InterceptorConstant constant); | 19 R visitInterceptor(InterceptorConstant constant); |
20 R visitDummyReceiver(DummyReceiverConstant constant); | 20 R visitDummy(DummyConstant constant); |
21 } | 21 } |
22 | 22 |
23 abstract class Constant { | 23 abstract class Constant { |
24 const Constant(); | 24 const Constant(); |
25 | 25 |
26 bool isNull() => false; | 26 bool isNull() => false; |
27 bool isBool() => false; | 27 bool isBool() => false; |
28 bool isTrue() => false; | 28 bool isTrue() => false; |
29 bool isFalse() => false; | 29 bool isFalse() => false; |
30 bool isInt() => false; | 30 bool isInt() => false; |
31 bool isDouble() => false; | 31 bool isDouble() => false; |
32 bool isNum() => false; | 32 bool isNum() => false; |
33 bool isString() => false; | 33 bool isString() => false; |
34 bool isList() => false; | 34 bool isList() => false; |
35 bool isMap() => false; | 35 bool isMap() => false; |
36 bool isConstructedObject() => false; | 36 bool isConstructedObject() => false; |
37 bool isFunction() => false; | 37 bool isFunction() => false; |
38 /** Returns true if the constant is null, a bool, a number or a string. */ | 38 /** Returns true if the constant is null, a bool, a number or a string. */ |
39 bool isPrimitive() => false; | 39 bool isPrimitive() => false; |
40 /** Returns true if the constant is a list, a map or a constructed object. */ | 40 /** Returns true if the constant is a list, a map or a constructed object. */ |
41 bool isObject() => false; | 41 bool isObject() => false; |
42 bool isType() => false; | 42 bool isType() => false; |
43 bool isSentinel() => false; | 43 bool isSentinel() => false; |
44 bool isInterceptor() => false; | 44 bool isInterceptor() => false; |
45 bool isDummyReceiver() => false; | 45 bool isDummy() => false; |
46 | 46 |
47 bool isNaN() => false; | 47 bool isNaN() => false; |
48 bool isMinusZero() => false; | 48 bool isMinusZero() => false; |
49 | 49 |
50 // TODO(johnniwinther): Replace with a 'type' getter. | 50 // TODO(johnniwinther): Replace with a 'type' getter. |
51 DartType computeType(Compiler compiler); | 51 DartType computeType(Compiler compiler); |
52 | 52 |
53 ti.TypeMask computeMask(Compiler compiler); | 53 ti.TypeMask computeMask(Compiler compiler); |
54 | 54 |
55 List<Constant> getDependencies(); | 55 List<Constant> getDependencies(); |
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532 | 532 |
533 ti.TypeMask computeMask(Compiler compiler) { | 533 ti.TypeMask computeMask(Compiler compiler) { |
534 return compiler.typesTask.nonNullType; | 534 return compiler.typesTask.nonNullType; |
535 } | 535 } |
536 | 536 |
537 String toString() { | 537 String toString() { |
538 return 'InterceptorConstant(${Error.safeToString(dispatchedType)})'; | 538 return 'InterceptorConstant(${Error.safeToString(dispatchedType)})'; |
539 } | 539 } |
540 } | 540 } |
541 | 541 |
542 class DummyReceiverConstant extends Constant { | 542 class DummyConstant extends Constant { |
543 final ti.TypeMask typeMask; | 543 final ti.TypeMask typeMask; |
544 | 544 |
545 DummyReceiverConstant(this.typeMask); | 545 DummyConstant(this.typeMask); |
546 | 546 |
547 bool isDummyReceiver() => true; | 547 bool isDummy() => true; |
548 | 548 |
549 bool operator ==(other) { | 549 bool operator ==(other) { |
550 return other is DummyReceiverConstant | 550 return other is DummyConstant |
551 && typeMask == other.typeMask; | 551 && typeMask == other.typeMask; |
552 } | 552 } |
553 | 553 |
554 get hashCode => typeMask.hashCode; | 554 get hashCode => typeMask.hashCode; |
555 | 555 |
556 List<Constant> getDependencies() => const <Constant>[]; | 556 List<Constant> getDependencies() => const <Constant>[]; |
557 | 557 |
558 accept(ConstantVisitor visitor) => visitor.visitDummyReceiver(this); | 558 accept(ConstantVisitor visitor) => visitor.visitDummy(this); |
559 | 559 |
560 DartType computeType(Compiler compiler) => compiler.types.dynamicType; | 560 DartType computeType(Compiler compiler) => compiler.types.dynamicType; |
561 | 561 |
562 ti.TypeMask computeMask(Compiler compiler) => typeMask; | 562 ti.TypeMask computeMask(Compiler compiler) => typeMask; |
563 | 563 |
564 String toString() { | 564 String toString() { |
565 return 'DummyReceiverConstant($typeMask)'; | 565 return 'DummyConstant($typeMask)'; |
566 } | 566 } |
567 } | 567 } |
568 | 568 |
569 class ConstructedConstant extends ObjectConstant { | 569 class ConstructedConstant extends ObjectConstant { |
570 final List<Constant> fields; | 570 final List<Constant> fields; |
571 final int hashCode; | 571 final int hashCode; |
572 | 572 |
573 ConstructedConstant(DartType type, List<Constant> fields) | 573 ConstructedConstant(DartType type, List<Constant> fields) |
574 : this.fields = fields, | 574 : this.fields = fields, |
575 hashCode = computeHash(type, fields), | 575 hashCode = computeHash(type, fields), |
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632 if (i > 0) sb.write(','); | 632 if (i > 0) sb.write(','); |
633 sb.write(Error.safeToString(field.name)); | 633 sb.write(Error.safeToString(field.name)); |
634 sb.write('='); | 634 sb.write('='); |
635 sb.write(Error.safeToString(value)); | 635 sb.write(Error.safeToString(value)); |
636 i++; | 636 i++; |
637 }); | 637 }); |
638 sb.write('))'); | 638 sb.write('))'); |
639 return sb.toString(); | 639 return sb.toString(); |
640 } | 640 } |
641 } | 641 } |
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