1 files changed, 48 insertions, 0 deletions
diff --git a/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/EnumFilter.java b/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/EnumFilter.java
new file mode 100644
index 00000000..852008e5
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+++ b/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/EnumFilter.java
@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2017 Mountainminds GmbH & Co. KG and Contributors
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Evgeny Mandrikov - initial API and implementation
+ *
+ *******************************************************************************/
+package org.jacoco.core.internal.analysis.filter;
+
+import org.objectweb.asm.tree.MethodNode;
+
+/**
+ * Filters methods <code>values</code> and <code>valueOf</code> that compiler
+ * creates for enums.
+ */
+public final class EnumFilter implements IFilter {
+
+	public void filter(final String className, final String superClassName,
+			final MethodNode methodNode, final IFilterOutput output) {
+		if (isMethodFiltered(className, superClassName, methodNode.name,
+				methodNode.desc)) {
+			output.ignore(methodNode.instructions.getFirst(),
+					methodNode.instructions.getLast());
+		}
+	}
+
+	private boolean isMethodFiltered(final String className,
+			final String superClassName, final String methodName,
+			final String methodDesc) {
+		if ("java/lang/Enum".equals(superClassName)) {
+			if ("values".equals(methodName)
+					&& ("()[L" + className + ";").equals(methodDesc)) {
+				return true;
+			}
+			if ("valueOf".equals(methodName)
+					&& ("(Ljava/lang/String;)L" + className + ";")
+							.equals(methodDesc)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+}