/*******************************************************************************
* Copyright (c) 2009, 2014 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:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.analysis;
import org.jacoco.core.analysis.IMethodCoverage;
import org.jacoco.core.internal.flow.ClassProbesVisitor;
import org.jacoco.core.internal.flow.MethodProbesVisitor;
import org.jacoco.core.internal.instr.InstrSupport;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Opcodes;
/**
* Analyzes the structure of a class.
*/
public class ClassAnalyzer extends ClassProbesVisitor {
private final long classid;
private final boolean noMatch;
private final boolean probes[];
private final StringPool stringPool;
private ClassCoverageImpl coverage;
/**
* Creates a new analyzer that builds coverage data for a class.
*
* @param classid
* id of the class
* @param noMatch
* <code>true</code> if class id does not match with execution
* data
* @param probes
* execution data for this class or <code>null</code>
* @param stringPool
* shared pool to minimize the number of {@link String} instances
*/
public ClassAnalyzer(final long classid, final boolean noMatch,
final boolean[] probes, final StringPool stringPool) {
this.classid = classid;
this.noMatch = noMatch;
this.probes = probes;
this.stringPool = stringPool;
}
/**
* Returns the coverage data for this class after this visitor has been
* processed.
*
* @return coverage data for this class
*/
public ClassCoverageImpl getCoverage() {
return coverage;
}
@Override
public void visit(final int version, final int access, final String name,
final String signature, final String superName,
final String[] interfaces) {
this.coverage = new ClassCoverageImpl(stringPool.get(name), classid,
noMatch, stringPool.get(signature), stringPool.get(superName),
stringPool.get(interfaces));
}
@Override
public void visitSource(final String source, final String debug) {
this.coverage.setSourceFileName(stringPool.get(source));
}
@Override
public MethodProbesVisitor visitMethod(final int access, final String name,
final String desc, final String signature, final String[] exceptions) {
InstrSupport.assertNotInstrumented(name, coverage.getName());
if (isMethodFiltered(access, name)) {
return null;
}
return new MethodAnalyzer(stringPool.get(name), stringPool.get(desc),
stringPool.get(signature), probes) {
@Override
public void visitEnd() {
super.visitEnd();
final IMethodCoverage methodCoverage = getCoverage();
if (methodCoverage.getInstructionCounter().getTotalCount() > 0) {
// Only consider methods that actually contain code
coverage.addMethod(methodCoverage);
}
}
};
}
// TODO: Use filter hook in future
private boolean isMethodFiltered(final int access, final String name) {
return (access & Opcodes.ACC_SYNTHETIC) != 0
&& !name.startsWith("lambda$");
}
@Override
public FieldVisitor visitField(final int access, final String name,
final String desc, final String signature, final Object value) {
InstrSupport.assertNotInstrumented(name, coverage.getName());
return super.visitField(access, name, desc, signature, value);
}
@Override
public void visitTotalProbeCount(final int count) {
// nothing to do
}
}