@Override
protected Object addValueIn(Control widget, PropertyDescriptor<?> desc, PropertySource source) {
int idx = ((Combo) widget).getSelectionIndex();
if (idx < 0) return null;
String newValue = ((Combo) widget).getItem(idx);
String[] currentValues = (String[]) valueFor(source, desc);
String[] newValues = CollectionUtil.addWithoutDuplicates(currentValues, newValue);
if (currentValues.length == newValues.length) return null;
source.setProperty((EnumeratedMultiProperty<?>) desc, newValues);
return newValue;
}
public class UnnecessaryConversionTemporaryRule extends AbstractJavaRule {
private boolean inPrimaryExpressionContext;
private ASTPrimaryExpression primary;
private boolean usingPrimitiveWrapperAllocation;
private static final Set<String> PRIMITIVE_WRAPPERS =
CollectionUtil.asSet(
new String[] {"Integer", "Boolean", "Double", "Long", "Short", "Byte", "Float"});
public Object visit(ASTPrimaryExpression node, Object data) {
if (node.jjtGetNumChildren() == 0
|| (node.jjtGetChild(0)).jjtGetNumChildren() == 0
|| !(node.jjtGetChild(0).jjtGetChild(0) instanceof ASTAllocationExpression)) {
return super.visit(node, data);
}
// TODO... hmmm... is this inPrimaryExpressionContext gibberish necessary?
inPrimaryExpressionContext = true;
primary = node;
super.visit(node, data);
inPrimaryExpressionContext = false;
usingPrimitiveWrapperAllocation = false;
return data;
}
public Object visit(ASTAllocationExpression node, Object data) {
if (!inPrimaryExpressionContext || !(node.jjtGetChild(0) instanceof ASTClassOrInterfaceType)) {
return super.visit(node, data);
}
if (!PRIMITIVE_WRAPPERS.contains(node.jjtGetChild(0).getImage())) {
return super.visit(node, data);
}
usingPrimitiveWrapperAllocation = true;
return super.visit(node, data);
}
public Object visit(ASTPrimarySuffix node, Object data) {
if (inPrimaryExpressionContext && usingPrimitiveWrapperAllocation) {
if (node.hasImageEqualTo("toString")) {
if (node.jjtGetParent() == primary) {
addViolation(data, node);
}
}
}
return super.visit(node, data);
}
}
/** {@inheritDoc} */
@Override
public boolean usesDefaultValues() {
Map<PropertyDescriptor<?>, Object> valuesByProperty = getPropertiesByPropertyDescriptor();
if (valuesByProperty.isEmpty()) {
return true;
}
Iterator<Map.Entry<PropertyDescriptor<?>, Object>> iter =
valuesByProperty.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<PropertyDescriptor<?>, Object> entry = iter.next();
if (!CollectionUtil.areEqual(entry.getKey().defaultValue(), entry.getValue())) {
return false;
}
}
return true;
}
public class UnnecessaryWrapperObjectCreationRule extends AbstractJavaRule {
private static final Set<String> PREFIX_SET =
CollectionUtil.asSet(
new String[] {
"Byte.valueOf",
"Short.valueOf",
"Integer.valueOf",
"Long.valueOf",
"Float.valueOf",
"Double.valueOf",
"Character.valueOf"
});
private static final Set<String> SUFFIX_SET =
CollectionUtil.asSet(
new String[] {
"toString",
"byteValue",
"shortValue",
"intValue",
"longValue",
"floatValue",
"doubleValue",
"charValue"
});
public Object visit(ASTPrimaryPrefix node, Object data) {
if (node.jjtGetNumChildren() == 0 || !(node.jjtGetChild(0) instanceof ASTName)) {
return super.visit(node, data);
}
String image = ((ASTName) node.jjtGetChild(0)).getImage();
if (image.startsWith("java.lang.")) {
image = image.substring(10);
}
boolean checkBoolean =
((RuleContext) data)
.getLanguageVersion()
.compareTo(LanguageRegistry.getLanguage(JavaLanguageModule.NAME).getVersion("1.5"))
>= 0;
if (PREFIX_SET.contains(image) || (checkBoolean && "Boolean.valueOf".equals(image))) {
ASTPrimaryExpression parent = (ASTPrimaryExpression) node.jjtGetParent();
if (parent.jjtGetNumChildren() >= 3) {
Node n = parent.jjtGetChild(2);
if (n instanceof ASTPrimarySuffix) {
ASTPrimarySuffix suffix = (ASTPrimarySuffix) n;
image = suffix.getImage();
if (SUFFIX_SET.contains(image) || (checkBoolean && "booleanValue".equals(image))) {
super.addViolation(data, node);
return data;
}
}
}
}
return super.visit(node, data);
}
}
public boolean appliesToClassName(String name) {
return CollectionUtil.isCollectionType(name, true);
}