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/*******************************************************************************
* Copyright (c) 2009, 2020 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:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.analysis;
import java.util.HashSet;
import java.util.Set;
import org.jacoco.core.internal.analysis.filter.Filters;
import org.jacoco.core.internal.analysis.filter.IFilter;
import org.jacoco.core.internal.analysis.filter.IFilterContext;
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.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.tree.MethodNode;
/**
* Analyzes the structure of a class.
*/
public class ClassAnalyzer extends ClassProbesVisitor
implements IFilterContext {
private final ClassCoverageImpl coverage;
private final boolean[] probes;
private final StringPool stringPool;
private final Set<String> classAnnotations = new HashSet<String>();
private final Set<String> classAttributes = new HashSet<String>();
private String sourceDebugExtension;
private final IFilter filter;
/**
* Creates a new analyzer that builds coverage data for a class.
*
* @param coverage
* coverage node for the analyzed class 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 ClassCoverageImpl coverage,
final boolean[] probes, final StringPool stringPool) {
this.coverage = coverage;
this.probes = probes;
this.stringPool = stringPool;
this.filter = Filters.all();
}
@Override
public void visit(final int version, final int access, final String name,
final String signature, final String superName,
final String[] interfaces) {
coverage.setSignature(stringPool.get(signature));
coverage.setSuperName(stringPool.get(superName));
coverage.setInterfaces(stringPool.get(interfaces));
}
@Override
public AnnotationVisitor visitAnnotation(final String desc,
final boolean visible) {
classAnnotations.add(desc);
return super.visitAnnotation(desc, visible);
}
@Override
public void visitAttribute(final Attribute attribute) {
classAttributes.add(attribute.type);
}
@Override
public void visitSource(final String source, final String debug) {
coverage.setSourceFileName(stringPool.get(source));
sourceDebugExtension = debug;
}
@Override
public MethodProbesVisitor visitMethod(final int access, final String name,
final String desc, final String signature,
final String[] exceptions) {
InstrSupport.assertNotInstrumented(name, coverage.getName());
final InstructionsBuilder builder = new InstructionsBuilder(probes);
return new MethodAnalyzer(builder) {
@Override
public void accept(final MethodNode methodNode,
final MethodVisitor methodVisitor) {
super.accept(methodNode, methodVisitor);
addMethodCoverage(stringPool.get(name), stringPool.get(desc),
stringPool.get(signature), builder, methodNode);
}
};
}
private void addMethodCoverage(final String name, final String desc,
final String signature, final InstructionsBuilder icc,
final MethodNode methodNode) {
final MethodCoverageCalculator mcc = new MethodCoverageCalculator(
icc.getInstructions());
filter.filter(methodNode, this, mcc);
final MethodCoverageImpl mc = new MethodCoverageImpl(name, desc,
signature);
mcc.calculate(mc);
if (mc.containsCode()) {
// Only consider methods that actually contain code
coverage.addMethod(mc);
}
}
@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
}
// IFilterContext implementation
public String getClassName() {
return coverage.getName();
}
public String getSuperClassName() {
return coverage.getSuperName();
}
public Set<String> getClassAnnotations() {
return classAnnotations;
}
public Set<String> getClassAttributes() {
return classAttributes;
}
public String getSourceFileName() {
return coverage.getSourceFileName();
}
public String getSourceDebugExtension() {
return sourceDebugExtension;
}
}
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