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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 library js_backend.namer; | 5 library js_backend.namer; |
| 6 | 6 |
| 7 import 'dart:collection' show HashMap; | 7 import 'dart:collection' show HashMap; |
| 8 | 8 |
| 9 import 'package:js_runtime/shared/embedded_names.dart' show JsGetName; | 9 import 'package:js_runtime/shared/embedded_names.dart' show JsGetName; |
| 10 | 10 |
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| 1468 String get functionTypeVoidReturnTag => r'v'; | 1468 String get functionTypeVoidReturnTag => r'v'; |
| 1469 | 1469 |
| 1470 String get functionTypeReturnTypeTag => r'ret'; | 1470 String get functionTypeReturnTypeTag => r'ret'; |
| 1471 | 1471 |
| 1472 String get functionTypeRequiredParametersTag => r'args'; | 1472 String get functionTypeRequiredParametersTag => r'args'; |
| 1473 | 1473 |
| 1474 String get functionTypeOptionalParametersTag => r'opt'; | 1474 String get functionTypeOptionalParametersTag => r'opt'; |
| 1475 | 1475 |
| 1476 String get functionTypeNamedParametersTag => r'named'; | 1476 String get functionTypeNamedParametersTag => r'named'; |
| 1477 | 1477 |
| 1478 Map<FunctionType, jsAst.Name> functionTypeNameMap = | 1478 Map<ResolutionFunctionType, jsAst.Name> functionTypeNameMap = |
| 1479 new HashMap<FunctionType, jsAst.Name>(); | 1479 new HashMap<ResolutionFunctionType, jsAst.Name>(); |
| 1480 final FunctionTypeNamer functionTypeNamer; | 1480 final FunctionTypeNamer functionTypeNamer; |
| 1481 | 1481 |
| 1482 jsAst.Name getFunctionTypeName(FunctionType functionType) { | 1482 jsAst.Name getFunctionTypeName(ResolutionFunctionType functionType) { |
| 1483 return functionTypeNameMap.putIfAbsent(functionType, () { | 1483 return functionTypeNameMap.putIfAbsent(functionType, () { |
| 1484 String proposedName = functionTypeNamer.computeName(functionType); | 1484 String proposedName = functionTypeNamer.computeName(functionType); |
| 1485 return getFreshName(instanceScope, proposedName); | 1485 return getFreshName(instanceScope, proposedName); |
| 1486 }); | 1486 }); |
| 1487 } | 1487 } |
| 1488 | 1488 |
| 1489 jsAst.Name operatorIsType(DartType type) { | 1489 jsAst.Name operatorIsType(ResolutionDartType type) { |
| 1490 if (type.isFunctionType) { | 1490 if (type.isFunctionType) { |
| 1491 // TODO(erikcorry): Reduce from $isx to ix when we are minifying. | 1491 // TODO(erikcorry): Reduce from $isx to ix when we are minifying. |
| 1492 return new CompoundName([ | 1492 return new CompoundName([ |
| 1493 new StringBackedName(operatorIsPrefix), | 1493 new StringBackedName(operatorIsPrefix), |
| 1494 _literalUnderscore, | 1494 _literalUnderscore, |
| 1495 getFunctionTypeName(type) | 1495 getFunctionTypeName(type) |
| 1496 ]); | 1496 ]); |
| 1497 } | 1497 } |
| 1498 return operatorIs(type.element); | 1498 return operatorIs(type.element); |
| 1499 } | 1499 } |
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| 1785 if (failed) return; | 1785 if (failed) return; |
| 1786 _visit(constant.fields[field]); | 1786 _visit(constant.fields[field]); |
| 1787 }, includeSuperAndInjectedMembers: true); | 1787 }, includeSuperAndInjectedMembers: true); |
| 1788 } | 1788 } |
| 1789 | 1789 |
| 1790 @override | 1790 @override |
| 1791 void visitType(TypeConstantValue constant, [_]) { | 1791 void visitType(TypeConstantValue constant, [_]) { |
| 1792 // Generates something like 'Type_String_k8F', using the simple name of the | 1792 // Generates something like 'Type_String_k8F', using the simple name of the |
| 1793 // type and a hash to disambiguate the same name in different libraries. | 1793 // type and a hash to disambiguate the same name in different libraries. |
| 1794 addRoot('Type'); | 1794 addRoot('Type'); |
| 1795 DartType type = constant.representedType; | 1795 ResolutionDartType type = constant.representedType; |
| 1796 String name = type.element?.name; | 1796 String name = type.element?.name; |
| 1797 if (name == null) { | 1797 if (name == null) { |
| 1798 // e.g. DartType 'dynamic' has no element. | 1798 // e.g. DartType 'dynamic' has no element. |
| 1799 name = rtiEncoder.getTypeRepresentationForTypeConstant(type); | 1799 name = rtiEncoder.getTypeRepresentationForTypeConstant(type); |
| 1800 } | 1800 } |
| 1801 addIdentifier(name); | 1801 addIdentifier(name); |
| 1802 add(getHashTag(constant, 3)); | 1802 add(getHashTag(constant, 3)); |
| 1803 } | 1803 } |
| 1804 | 1804 |
| 1805 @override | 1805 @override |
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| 1907 int visitConstructed(ConstructedConstantValue constant, [_]) { | 1907 int visitConstructed(ConstructedConstantValue constant, [_]) { |
| 1908 int hash = _hashString(3, constant.type.element.name); | 1908 int hash = _hashString(3, constant.type.element.name); |
| 1909 constant.type.element.forEachInstanceField((_, FieldElement field) { | 1909 constant.type.element.forEachInstanceField((_, FieldElement field) { |
| 1910 hash = _combine(hash, _visit(constant.fields[field])); | 1910 hash = _combine(hash, _visit(constant.fields[field])); |
| 1911 }, includeSuperAndInjectedMembers: true); | 1911 }, includeSuperAndInjectedMembers: true); |
| 1912 return hash; | 1912 return hash; |
| 1913 } | 1913 } |
| 1914 | 1914 |
| 1915 @override | 1915 @override |
| 1916 int visitType(TypeConstantValue constant, [_]) { | 1916 int visitType(TypeConstantValue constant, [_]) { |
| 1917 DartType type = constant.representedType; | 1917 ResolutionDartType type = constant.representedType; |
| 1918 // This name includes the library name and type parameters. | 1918 // This name includes the library name and type parameters. |
| 1919 String name = rtiEncoder.getTypeRepresentationForTypeConstant(type); | 1919 String name = rtiEncoder.getTypeRepresentationForTypeConstant(type); |
| 1920 return _hashString(4, name); | 1920 return _hashString(4, name); |
| 1921 } | 1921 } |
| 1922 | 1922 |
| 1923 @override | 1923 @override |
| 1924 int visitInterceptor(InterceptorConstantValue constant, [_]) { | 1924 int visitInterceptor(InterceptorConstantValue constant, [_]) { |
| 1925 String typeName = constant.dispatchedType.element.name; | 1925 String typeName = constant.dispatchedType.element.name; |
| 1926 return _hashString(5, typeName); | 1926 return _hashString(5, typeName); |
| 1927 } | 1927 } |
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| 2021 return _MASK & (hash + (((_MASK >> 15) & hash) << 15)); | 2021 return _MASK & (hash + (((_MASK >> 15) & hash) << 15)); |
| 2022 } | 2022 } |
| 2023 } | 2023 } |
| 2024 | 2024 |
| 2025 class FunctionTypeNamer extends BaseDartTypeVisitor { | 2025 class FunctionTypeNamer extends BaseDartTypeVisitor { |
| 2026 final RuntimeTypesEncoder rtiEncoder; | 2026 final RuntimeTypesEncoder rtiEncoder; |
| 2027 StringBuffer sb; | 2027 StringBuffer sb; |
| 2028 | 2028 |
| 2029 FunctionTypeNamer(this.rtiEncoder); | 2029 FunctionTypeNamer(this.rtiEncoder); |
| 2030 | 2030 |
| 2031 String computeName(DartType type) { | 2031 String computeName(ResolutionDartType type) { |
| 2032 sb = new StringBuffer(); | 2032 sb = new StringBuffer(); |
| 2033 visit(type); | 2033 visit(type); |
| 2034 return sb.toString(); | 2034 return sb.toString(); |
| 2035 } | 2035 } |
| 2036 | 2036 |
| 2037 visit(DartType type, [_]) { | 2037 visit(ResolutionDartType type, [_]) { |
| 2038 type.accept(this, null); | 2038 type.accept(this, null); |
| 2039 } | 2039 } |
| 2040 | 2040 |
| 2041 visitType(DartType type, _) { | 2041 visitType(ResolutionDartType type, _) { |
| 2042 sb.write(type.name); | 2042 sb.write(type.name); |
| 2043 } | 2043 } |
| 2044 | 2044 |
| 2045 visitFunctionType(FunctionType type, _) { | 2045 visitFunctionType(ResolutionFunctionType type, _) { |
| 2046 if (rtiEncoder.isSimpleFunctionType(type)) { | 2046 if (rtiEncoder.isSimpleFunctionType(type)) { |
| 2047 sb.write('args${type.parameterTypes.length}'); | 2047 sb.write('args${type.parameterTypes.length}'); |
| 2048 return; | 2048 return; |
| 2049 } | 2049 } |
| 2050 visit(type.returnType); | 2050 visit(type.returnType); |
| 2051 sb.write('_'); | 2051 sb.write('_'); |
| 2052 for (DartType parameter in type.parameterTypes) { | 2052 for (ResolutionDartType parameter in type.parameterTypes) { |
| 2053 sb.write('_'); | 2053 sb.write('_'); |
| 2054 visit(parameter); | 2054 visit(parameter); |
| 2055 } | 2055 } |
| 2056 bool first = false; | 2056 bool first = false; |
| 2057 for (DartType parameter in type.optionalParameterTypes) { | 2057 for (ResolutionDartType parameter in type.optionalParameterTypes) { |
| 2058 if (!first) { | 2058 if (!first) { |
| 2059 sb.write('_'); | 2059 sb.write('_'); |
| 2060 } | 2060 } |
| 2061 sb.write('_'); | 2061 sb.write('_'); |
| 2062 visit(parameter); | 2062 visit(parameter); |
| 2063 first = true; | 2063 first = true; |
| 2064 } | 2064 } |
| 2065 if (!type.namedParameterTypes.isEmpty) { | 2065 if (!type.namedParameterTypes.isEmpty) { |
| 2066 first = false; | 2066 first = false; |
| 2067 for (DartType parameter in type.namedParameterTypes) { | 2067 for (ResolutionDartType parameter in type.namedParameterTypes) { |
| 2068 if (!first) { | 2068 if (!first) { |
| 2069 sb.write('_'); | 2069 sb.write('_'); |
| 2070 } | 2070 } |
| 2071 sb.write('_'); | 2071 sb.write('_'); |
| 2072 visit(parameter); | 2072 visit(parameter); |
| 2073 first = true; | 2073 first = true; |
| 2074 } | 2074 } |
| 2075 } | 2075 } |
| 2076 } | 2076 } |
| 2077 } | 2077 } |
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| 2095 void addSuggestion(String original, String suggestion) { | 2095 void addSuggestion(String original, String suggestion) { |
| 2096 assert(!_suggestedNames.containsKey(original)); | 2096 assert(!_suggestedNames.containsKey(original)); |
| 2097 _suggestedNames[original] = suggestion; | 2097 _suggestedNames[original] = suggestion; |
| 2098 } | 2098 } |
| 2099 | 2099 |
| 2100 bool hasSuggestion(String original) => _suggestedNames.containsKey(original); | 2100 bool hasSuggestion(String original) => _suggestedNames.containsKey(original); |
| 2101 bool isSuggestion(String candidate) { | 2101 bool isSuggestion(String candidate) { |
| 2102 return _suggestedNames.containsValue(candidate); | 2102 return _suggestedNames.containsValue(candidate); |
| 2103 } | 2103 } |
| 2104 } | 2104 } |
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