Linter Demo

Errors: 17

Warnings: 8

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/types/map_type_mask.dart

// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. part of types; /** * A [MapTypeMask] is a [TypeMask] for a specific allocation * site of a map (currently only internal Map class) that will get specialized * once the [TypeGraphInferrer] phase finds a key and/or value type for it. */ class MapTypeMask extends ForwardingTypeMask { final TypeMask forwardTo; // The [Node] where this type mask was created. final Node allocationNode; // The [Element] where this type mask was created. final Element allocationElement; // The value type of this map. final TypeMask valueType; // The key type of this map. final TypeMask keyType; MapTypeMask(this.forwardTo, this.allocationNode, this.allocationElement, this.keyType, this.valueType); TypeMask nullable() { return isNullable ? this : new MapTypeMask(forwardTo.nullable(), allocationNode, allocationElement, keyType, valueType); } TypeMask nonNullable() { return isNullable ? new MapTypeMask(forwardTo.nonNullable(), allocationNode, allocationElement, keyType, valueType) : this; } bool get isContainer => false; bool get isMap => true; bool get isExact => true; bool equalsDisregardNull(other) { if (other is! MapTypeMask) return false; return super.equalsDisregardNull(other) && allocationNode == other.allocationNode && keyType == other.keyType && valueType == other.valueType; } TypeMask intersection(TypeMask other, ClassWorld classWorld) { TypeMask forwardIntersection = forwardTo.intersection(other, classWorld); if (forwardIntersection.isEmpty) return forwardIntersection; return forwardIntersection.isNullable ? nullable() : nonNullable(); } TypeMask union(other, ClassWorld classWorld) { if (this == other) { return this; } else if (equalsDisregardNull(other)) { return other.isNullable ? other : this; } else if (other.isEmpty) { return other.isNullable ? this.nullable() : this; } else if (other.isMap && keyType != null && other.keyType != null && valueType != null && other.valueType != null) { TypeMask newKeyType = keyType.union(other.keyType, classWorld); TypeMask newValueType = valueType.union(other.valueType, classWorld); TypeMask newForwardTo = forwardTo.union(other.forwardTo, classWorld); return new MapTypeMask( newForwardTo, null, null, newKeyType, newValueType); } else if (other.isDictionary) { assert(other.keyType == classWorld.compiler.typesTask.stringType); TypeMask newKeyType = keyType.union(other.keyType, classWorld); TypeMask newValueType = other.typeMap.values.fold(keyType, (p,n) => p.union(n, classWorld)); TypeMask newForwardTo = forwardTo.union(other.forwardTo, classWorld); MapTypeMask newMapTypeMask = new MapTypeMask( newForwardTo, allocationNode == other.allocationNode ? allocationNode : null, allocationElement == other.allocationElement ? allocationElement : null, newKeyType, newValueType); return newMapTypeMask; } else { return forwardTo.union(other, classWorld); } } bool operator==(other) => super == other; int get hashCode { return computeHashCode( allocationNode, isNullable, keyType, valueType, forwardTo); } String toString() { return 'Map mask: [$keyType/$valueType] type: $forwardTo'; } }