| /******************************************************************************* |
| * Copyright (c) 2014, 2018 Willink Transformations and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * R.Dvorak and others - QVTo debugger framework |
| * E.D.Willink - revised API for OCL debugger framework |
| *******************************************************************************/ |
| package org.eclipse.ocl.examples.debug.vm.utils; |
| |
| public final class VMStackTraceElement implements IVMStackTraceElement { |
| |
| private String fModuleName; |
| private String fOperationName; |
| private String fUnitName; |
| private int fLineNum; |
| |
| /** |
| * Creates a stack trace element representing the specified execution |
| * point. |
| * @throws NullPointerException if <tt>fModuleName</tt> or |
| * <tt>fOperationName</tt> is null |
| */ |
| public VMStackTraceElement(String moduleName, String operationName, String unitQName, int lineNumber) { |
| if (moduleName == null) { |
| throw new NullPointerException("Module name is null"); //$NON-NLS-1$ |
| } |
| |
| if (operationName == null) { |
| throw new NullPointerException("operation name is null"); //$NON-NLS-1$ |
| } |
| |
| this.fModuleName = moduleName; |
| this.fOperationName = operationName; |
| this.fUnitName = unitQName; |
| this.fLineNum = lineNumber > 0 ? lineNumber : -1; |
| } |
| |
| public String getUnitName() { |
| return fUnitName; |
| } |
| |
| public int getLineNumber() { |
| return fLineNum; |
| } |
| |
| public String getModuleName() { |
| return fModuleName; |
| } |
| |
| public String getOperationName() { |
| return fOperationName; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder buf = new StringBuilder(); |
| buf.append(getModuleName()).append("::").append(getOperationName()); |
| if(fUnitName != null) { |
| buf.append('(').append(fUnitName).append(':'); |
| if(fLineNum > 0) { |
| buf.append(fLineNum); |
| } else { |
| buf.append("<Unknown>"); //$NON-NLS-1$ |
| } |
| buf.append(')'); |
| } else { |
| buf.append("(Unknown Source)"); //$NON-NLS-1$ |
| } |
| |
| return buf.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (!(obj instanceof VMStackTraceElement)) { |
| return false; |
| } |
| VMStackTraceElement e = (VMStackTraceElement) obj; |
| return e.fModuleName.equals(fModuleName) && e.fLineNum == fLineNum |
| && eq(fOperationName, e.fOperationName) |
| && eq(fUnitName, e.fUnitName); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = 31 * fModuleName.hashCode() + fOperationName.hashCode(); |
| result = 31 * result + (fUnitName == null ? 0 : fUnitName.hashCode()); |
| result = 31 * result + fLineNum; |
| return result; |
| } |
| |
| private static boolean eq(Object a, Object b) { |
| return a == b || (a != null && a.equals(b)); |
| } |
| } |