/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.jsp.rule.basic;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;
import net.sourceforge.pmd.RuleContext;
import net.sourceforge.pmd.lang.ast.Node;
import net.sourceforge.pmd.lang.jsp.ast.ASTJspDirectiveAttribute;
import net.sourceforge.pmd.lang.jsp.rule.AbstractJspRule;
import net.sourceforge.pmd.lang.rule.ImportWrapper;
public class DuplicateJspImportsRule extends AbstractJspRule {
private Set<ImportWrapper> imports = new HashSet<>();
@Override
public void apply(List<? extends Node> nodes, RuleContext ctx) {
/*
* TODO: This method is a hack! It's overriding the parent's method
* because the JSP parsing doesn't seem to hit ASTCompilationUnit
* properly
*/
imports.clear();
super.apply(nodes, ctx);
}
@Override
public Object visit(ASTJspDirectiveAttribute node, Object data) {
if (!"import".equals(node.getName())) {
return super.visit(node, data);
}
String values = node.getValue();
StringTokenizer st = new StringTokenizer(values, ",");
int count = st.countTokens();
for (int ix = 0; ix < count; ix++) {
String token = st.nextToken();
ImportWrapper wrapper = new ImportWrapper(token, token, node);
if (imports.contains(wrapper)) {
addViolation(data, node, node.getImage());
} else {
imports.add(wrapper);
}
}
return super.visit(node, data);
}
}