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| package net.sourceforge.pmd.rules.design; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| import net.sourceforge.pmd.AbstractRule; |
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| import net.sourceforge.pmd.PropertyDescriptor; |
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| import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration; |
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| import net.sourceforge.pmd.ast.ASTCompilationUnit; |
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| import net.sourceforge.pmd.ast.ASTFieldDeclaration; |
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| import net.sourceforge.pmd.ast.SimpleNode; |
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| import net.sourceforge.pmd.properties.IntegerProperty; |
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| import net.sourceforge.pmd.util.NumericConstants; |
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| public class TooManyFields extends AbstractRule { |
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| private static final int DEFAULT_MAXFIELDS = 15; |
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| private Map stats; |
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| private Map nodes; |
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| private int maxFields; |
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| private static final PropertyDescriptor maxFieldsDescriptor = new IntegerProperty( |
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| "maxfields", |
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| "Maximum allowable fields per class", |
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| DEFAULT_MAXFIELDS, |
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| 1.0f |
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| ); |
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| private static final Map propertyDescriptorsByName = asFixedMap(maxFieldsDescriptor); |
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| public Object visit(ASTCompilationUnit node, Object data) {
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| maxFields = getIntProperty(maxFieldsDescriptor);
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| stats = new HashMap(5);
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| nodes = new HashMap(5);
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| List l = node.findChildrenOfType(ASTFieldDeclaration.class);
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| for (Iterator it = l.iterator(); it.hasNext();) {
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| ASTFieldDeclaration fd = (ASTFieldDeclaration) it.next();
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| if (fd.isFinal() && fd.isStatic()) {
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| continue;
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| } |
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| ASTClassOrInterfaceDeclaration clazz = (ASTClassOrInterfaceDeclaration) fd.getFirstParentOfType(ASTClassOrInterfaceDeclaration.class);
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| if (clazz != null && !clazz.isInterface()) {
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| bumpCounterFor(clazz);
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| } |
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| } |
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| for (Iterator it = stats.keySet().iterator(); it.hasNext();) {
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| String k = (String) it.next();
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| int val = ((Integer) stats.get(k)).intValue();
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| SimpleNode n = (SimpleNode) nodes.get(k);
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| if (val > maxFields) {
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| addViolation(data, n);
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| } |
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| } |
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| return data;
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| } |
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| private void bumpCounterFor(ASTClassOrInterfaceDeclaration clazz) {
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| String key = clazz.getImage();
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| if (!stats.containsKey(key)) {
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| stats.put(key, NumericConstants.ZERO);
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| nodes.put(key, clazz);
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| } |
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| Integer i = new Integer(((Integer) stats.get(key)).intValue() + 1);
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| stats.put(key, i);
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| } |
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| protected Map propertiesByName() {
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| return propertyDescriptorsByName;
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| } |
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| } |