diff options
6 files changed, 80 insertions, 5 deletions
diff --git a/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/lib/AnyLongObjectId.java b/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/lib/AnyLongObjectId.java index e6fe7408a8..0a509acb79 100644 --- a/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/lib/AnyLongObjectId.java +++ b/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/lib/AnyLongObjectId.java @@ -50,6 +50,7 @@ import java.nio.ByteBuffer; import org.eclipse.jgit.lib.AnyObjectId; import org.eclipse.jgit.util.NB; +import org.eclipse.jgit.util.References; /** * A (possibly mutable) SHA-256 abstraction. @@ -76,8 +77,9 @@ public abstract class AnyLongObjectId implements Comparable<AnyLongObjectId> { */ public static boolean equals(final AnyLongObjectId firstObjectId, final AnyLongObjectId secondObjectId) { - if (firstObjectId == secondObjectId) + if (References.isSameObject(firstObjectId, secondObjectId)) { return true; + } // We test word 2 first as odds are someone already used our // word 1 as a hash code, and applying that came up with these diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/AnyObjectId.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/AnyObjectId.java index 4252e41384..4f90e69008 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/AnyObjectId.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/AnyObjectId.java @@ -49,6 +49,7 @@ import java.io.Writer; import java.nio.ByteBuffer; import org.eclipse.jgit.util.NB; +import org.eclipse.jgit.util.References; /** * A (possibly mutable) SHA-1 abstraction. @@ -88,7 +89,7 @@ public abstract class AnyObjectId implements Comparable<AnyObjectId> { */ public static boolean isEqual(final AnyObjectId firstObjectId, final AnyObjectId secondObjectId) { - if (firstObjectId == secondObjectId) { + if (References.isSameObject(firstObjectId, secondObjectId)) { return true; } // We test word 3 first since the git file-based ODB diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefSpec.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefSpec.java index afd3adaacc..16c6faf277 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefSpec.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefSpec.java @@ -49,6 +49,7 @@ import java.text.MessageFormat; import org.eclipse.jgit.internal.JGitText; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.Ref; +import org.eclipse.jgit.util.References; /** * Describes how refs in one repository copy into another repository. @@ -585,8 +586,9 @@ public class RefSpec implements Serializable { } private static boolean eq(String a, String b) { - if (a == b) + if (References.isSameObject(a, b)) { return true; + } if (a == null || b == null) return false; return a.equals(b); diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java index 34730d395c..7ca9cc134c 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java @@ -62,6 +62,7 @@ import java.util.regex.Pattern; import org.eclipse.jgit.internal.JGitText; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.util.RawParseUtils; +import org.eclipse.jgit.util.References; import org.eclipse.jgit.util.StringUtils; /** @@ -624,8 +625,9 @@ public class URIish implements Serializable { } private static boolean eq(String a, String b) { - if (a == b) + if (References.isSameObject(a, b)) { return true; + } if (StringUtils.isEmptyOrNull(a) && StringUtils.isEmptyOrNull(b)) return true; if (a == null || b == null) diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/References.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/References.java new file mode 100644 index 0000000000..341fbfa943 --- /dev/null +++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/References.java @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com> + * and other copyright owners as documented in the project's IP log. + * + * This program and the accompanying materials are made available + * under the terms of the Eclipse Distribution License v1.0 which + * accompanies this distribution, is reproduced below, and is + * available at http://www.eclipse.org/org/documents/edl-v10.php + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * - Neither the name of the Eclipse Foundation, Inc. nor the + * names of its contributors may be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.eclipse.jgit.util; + +/** + * Utility methods for object references + * + * @since 5.4 + */ +public interface References { + + /** + * Compare two references + * + * @param <T> + * type of the references + * @param ref1 + * first reference + * @param ref2 + * second reference + * @return {@code true} if both references refer to the same object + */ + @SuppressWarnings("ReferenceEquality") + public static <T> boolean isSameObject(T ref1, T ref2) { + return ref1 == ref2; + } +} diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java index 3868e56f50..f4b6f9d0df 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java @@ -139,8 +139,9 @@ public final class StringUtils { * @return true if a equals b */ public static boolean equalsIgnoreCase(String a, String b) { - if (a == b) + if (References.isSameObject(a, b)) { return true; + } if (a.length() != b.length()) return false; for (int i = 0; i < a.length(); i++) { |