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/*******************************************************************************
* Copyright (c) 2009, 2019 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.Opcodes;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.MethodNode;
/**
* Filters branch in bytecode that Kotlin compiler generates for not-null
* assertion operator.
*/
public final class KotlinNotNullOperatorFilter implements IFilter {
public void filter(final MethodNode methodNode,
final IFilterContext context, final IFilterOutput output) {
final Matcher matcher = new Matcher();
for (AbstractInsnNode i = methodNode.instructions
.getFirst(); i != null; i = i.getNext()) {
matcher.match(i, output);
}
}
private static class Matcher extends AbstractMatcher {
public void match(final AbstractInsnNode start,
final IFilterOutput output) {
if (Opcodes.IFNONNULL != start.getOpcode()) {
return;
}
cursor = start;
nextIsInvoke(Opcodes.INVOKESTATIC, "kotlin/jvm/internal/Intrinsics",
"throwNpe", "()V");
if (cursor == null) {
return;
}
output.ignore(start, cursor);
}
}
}
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