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package org.eclipse.team.internal.core;
/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
import org.eclipse.team.core.*;
public final class Assert {
public static class AssertionFailedException extends RuntimeException {
public AssertionFailedException() {
}
public AssertionFailedException(String detail) {
super("Assertion failed: " + detail);
}
}
/* This class is not intended to be instantiated. */
private Assert() {
}
/** Asserts that an argument is legal. If the given boolean is
* not <code>true</code>, an <code>IllegalArgumentException</code>
* is thrown.
*
* @param expression the outcode of the check
* @return <code>true</code> if the check passes (does not return
* if the check fails)
* @exception IllegalArgumentException if the legality test failed
*/
public static boolean isLegal(boolean expression) {
return isLegal(expression, ""); //$NON-NLS-1$
}
/** Asserts that an argument is legal. If the given boolean is
* not <code>true</code>, an <code>IllegalArgumentException</code>
* is thrown.
* The given message is included in that exception, to aid debugging.
*
* @param expression the outcode of the check
* @param message the message to include in the exception
* @return <code>true</code> if the check passes (does not return
* if the check fails)
* @exception IllegalArgumentException if the legality test failed
*/
public static boolean isLegal(boolean expression, String message) {
if (!expression)
throw new IllegalArgumentException(message);
return expression;
}
/** Asserts that the given object is not <code>null</code>. If this
* is not the case, some kind of unchecked exception is thrown.
*
* @param object the value to test
* @exception IllegalArgumentException if the object is <code>null</code>
*/
public static void isNotNull(Object object) {
if (object == null)
throw new AssertionFailedException("null argument"); //$NON-NLS-1$
}
/** Asserts that the given object is not <code>null</code>. If this
* is not the case, some kind of unchecked exception is thrown.
* The given message is included in that exception, to aid debugging.
*
* @param object the value to test
* @param message the message to include in the exception
* @exception IllegalArgumentException if the object is <code>null</code>
*/
public static void isNotNull(Object object, String message) {
if (object == null)
throw new AssertionFailedException("null argument:" /*non NLS*/ + message); //$NON-NLS-1$
}
/** Asserts that the given boolean is <code>true</code>. If this
* is not the case, some kind of unchecked exception is thrown.
*
* @param expression the outcode of the check
* @return <code>true</code> if the check passes (does not return
* if the check fails)
*/
public static boolean isTrue(boolean expression) {
return isTrue(expression, ""/*nonNLS*/); //$NON-NLS-1$
}
/** Asserts that the given boolean is <code>true</code>. If this
* is not the case, some kind of unchecked exception is thrown.
* The given message is included in that exception, to aid debugging.
*
* @param expression the outcode of the check
* @param message the message to include in the exception
* @return <code>true</code> if the check passes (does not return
* if the check fails)
*/
public static boolean isTrue(boolean expression, String message) {
if (!expression)
throw new AssertionFailedException("assert failed:" /*non NLS*/ + message); //$NON-NLS-1$
return expression;
}
/**
* Indicates that the caller has not implemented the method.
* Usually this is a temporary condition.
*/
public static void notYetImplemented() {
}
}
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