| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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 org.onosproject.workflow.api; |
| |
| import java.util.Objects; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * An interface representing workflow program counter. |
| */ |
| public final class ProgramCounter { |
| |
| public static final ProgramCounter INIT_PC = ProgramCounter.valueOf(Worklet.Common.INIT.name(), 0); |
| |
| /** |
| * index of the worklet. |
| */ |
| private int workletIndex; |
| |
| /** |
| * Type of worklet. |
| */ |
| private String workletType; |
| |
| /** |
| * Index of worklet. |
| * @return index of worklet |
| */ |
| public int workletIndex() { |
| return this.workletIndex; |
| } |
| |
| /** |
| * Type of worklet. |
| * @return type of worklet |
| */ |
| public String workletType() { |
| return this.workletType; |
| } |
| |
| /** |
| * Constructor of workflow Program Counter. |
| * @param workletType type of worklet |
| * @param workletIndex index of worklet |
| */ |
| private ProgramCounter(String workletType, int workletIndex) { |
| this.workletType = workletType; |
| this.workletIndex = workletIndex; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(this.toString()); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (!(obj instanceof ProgramCounter)) { |
| return false; |
| } |
| return Objects.equals(this.workletType(), ((ProgramCounter) obj).workletType()) |
| && Objects.equals(this.workletIndex(), ((ProgramCounter) obj).workletIndex()); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("(%d)%s", workletIndex, workletType); |
| } |
| |
| /** |
| * Builder of workflow Program Counter. |
| * @param workletType type of worklet |
| * @param workletIndex index of worklet |
| * @return program counter |
| */ |
| public static ProgramCounter valueOf(String workletType, int workletIndex) { |
| return new ProgramCounter(workletType, workletIndex); |
| } |
| |
| /** |
| * Builder of workflow Program Counter. |
| * @param strProgramCounter string format for program counter |
| * @return program counter |
| */ |
| public static ProgramCounter valueOf(String strProgramCounter) { |
| |
| Matcher m = Pattern.compile("\\((\\d+)\\)(.+)").matcher(strProgramCounter); |
| |
| if (!m.matches()) { |
| throw new IllegalArgumentException("Malformed program counter string"); |
| } |
| |
| return new ProgramCounter(m.group(2), Integer.parseInt(m.group(1))); |
| } |
| |
| } |
| |