ClassAnalyzer.java
/*******************************************************************************
* Copyright (c) 2009, 2011 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.IClassProbesVisitor;
import org.jacoco.core.internal.flow.IMethodProbesVisitor;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Opcodes;
/**
* Analyzes the structure of a class.
*/
public class ClassAnalyzer implements IClassProbesVisitor {
private final long classid;
private final boolean executionData[];
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 executionData
* 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[] executionData,
final StringPool stringPool) {
this.classid = classid;
this.executionData = executionData;
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;
}
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,
stringPool.get(signature), stringPool.get(superName),
stringPool.get(interfaces));
}
public void visitSource(final String source, final String debug) {
this.coverage.setSourceFileName(stringPool.get(source));
}
public IMethodProbesVisitor visitMethod(final int access,
final String name, final String desc, final String signature,
final String[] exceptions) {
// TODO: Use filter hook
if ((access & Opcodes.ACC_SYNTHETIC) != 0) {
return null;
}
return new MethodAnalyzer(stringPool.get(name), stringPool.get(desc),
stringPool.get(signature), executionData) {
@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);
}
}
};
}
// Nothing to do here:
public void visitTotalProbeCount(final int count) {
}
public AnnotationVisitor visitAnnotation(final String desc,
final boolean visible) {
return null;
}
public void visitAttribute(final Attribute attr) {
}
public FieldVisitor visitField(final int access, final String name,
final String desc, final String signature, final Object value) {
return null;
}
public void visitInnerClass(final String name, final String outerName,
final String innerName, final int access) {
}
public void visitOuterClass(final String owner, final String name,
final String desc) {
}
public void visitEnd() {
}
}