| /* |
| * Copyright (c) 2013, the Dart project authors. |
| * |
| * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.dart.engine.internal.object; |
| |
| import com.google.dart.engine.element.Element; |
| import com.google.dart.engine.utilities.general.ObjectUtilities; |
| |
| /** |
| * Instances of the class {@code TypeState} represent the state of an object representing a type. |
| */ |
| public class TypeState extends InstanceState { |
| /** |
| * The element representing the type being modeled. |
| */ |
| private Element element; |
| |
| /** |
| * Initialize a newly created state to represent the given value. |
| * |
| * @param element the element representing the type being modeled |
| */ |
| public TypeState(Element element) { |
| this.element = element; |
| } |
| |
| @Override |
| public StringState convertToString() throws EvaluationException { |
| if (element == null) { |
| return StringState.UNKNOWN_VALUE; |
| } |
| return new StringState(element.getName()); |
| } |
| |
| @Override |
| public boolean equals(Object object) { |
| return object instanceof TypeState |
| && ObjectUtilities.equals(element, ((TypeState) object).element); |
| } |
| |
| @Override |
| public BoolState equalEqual(InstanceState rightOperand) throws EvaluationException { |
| assertBoolNumStringOrNull(rightOperand); |
| if (element == null) { |
| return BoolState.UNKNOWN_VALUE; |
| } |
| if (rightOperand instanceof TypeState) { |
| Element rightElement = ((TypeState) rightOperand).element; |
| if (rightElement == null) { |
| return BoolState.UNKNOWN_VALUE; |
| } |
| return BoolState.from(element.equals(rightElement)); |
| } else if (rightOperand instanceof DynamicState) { |
| return BoolState.UNKNOWN_VALUE; |
| } |
| return BoolState.FALSE_STATE; |
| } |
| |
| @Override |
| public String getTypeName() { |
| return "Type"; //$NON-NLS-0$ |
| } |
| |
| @Override |
| public int hashCode() { |
| return element == null ? 0 : element.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return element == null ? "-unknown-" : element.getName(); |
| } |
| } |