RecordPatternFilter.java
/*******************************************************************************
* Copyright (c) 2009, 2024 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Evgeny Mandrikov - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.analysis.filter;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.tree.TryCatchBlockNode;
/**
* Filters code that is generated for record patterns.
*/
final class RecordPatternFilter implements IFilter {
public void filter(final MethodNode methodNode,
final IFilterContext context, final IFilterOutput output) {
final Matcher matcher = new Matcher();
for (final TryCatchBlockNode t : methodNode.tryCatchBlocks) {
if ("java/lang/Throwable".equals(t.type)) {
matcher.match(t.handler, output);
}
}
}
private static class Matcher extends AbstractMatcher {
void match(final AbstractInsnNode start, final IFilterOutput output) {
cursor = start;
nextIsVar(Opcodes.ASTORE, "cause");
nextIsType(org.objectweb.asm.Opcodes.NEW,
"java/lang/MatchException");
nextIs(Opcodes.DUP);
nextIsVar(Opcodes.ALOAD, "cause");
nextIsInvoke(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable",
"toString", "()Ljava/lang/String;");
nextIsVar(Opcodes.ALOAD, "cause");
nextIsInvoke(Opcodes.INVOKESPECIAL, "java/lang/MatchException",
"<init>", "(Ljava/lang/String;Ljava/lang/Throwable;)V");
nextIs(Opcodes.ATHROW);
if (cursor != null) {
output.ignore(start, cursor);
}
}
}
}