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);
}
/**
* Simply return if the image start with keyword 'this' or 'super'.
*
* @return true, if keyword is used, false otherwise.
*/
public boolean useThisOrSuper() {
Node node = location.jjtGetParent();
if (node instanceof ASTPrimaryExpression) {
ASTPrimaryExpression primaryExpression = (ASTPrimaryExpression) node;
ASTPrimaryPrefix prefix = (ASTPrimaryPrefix) primaryExpression.jjtGetChild(0);
if (prefix != null) {
return prefix.usesSuperModifier() || prefix.usesThisModifier();
}
}
return image.startsWith(THIS_DOT) || image.startsWith(SUPER_DOT);
}
private boolean isStandAlonePostfix(Node primaryExpression) {
if (!(primaryExpression instanceof ASTPostfixExpression)
|| !(primaryExpression.jjtGetParent() instanceof ASTStatementExpression)) {
return false;
}
ASTPrimaryPrefix pf =
(ASTPrimaryPrefix) ((ASTPrimaryExpression) primaryExpression.jjtGetChild(0)).jjtGetChild(0);
if (pf.usesThisModifier()) {
return true;
}
return thirdChildHasDottedName(primaryExpression);
}
private String getExpressionVarName(Node e) {
String assignedVar = getFirstNameImage(e);
if (assignedVar == null) {
ASTPrimarySuffix suffix = e.getFirstDescendantOfType(ASTPrimarySuffix.class);
if (suffix != null) {
assignedVar = suffix.getImage();
ASTPrimaryPrefix prefix = e.getFirstDescendantOfType(ASTPrimaryPrefix.class);
if (prefix != null) {
if (prefix.usesThisModifier()) {
assignedVar = "this." + assignedVar;
} else if (prefix.usesSuperModifier()) {
assignedVar = "super." + assignedVar;
}
}
}
}
return assignedVar;
}