/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.plsql.symboltable;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.sourceforge.pmd.lang.symboltable.NameDeclaration;
import net.sourceforge.pmd.lang.symboltable.Scope;
public class Search {
private static final Logger LOGGER = Logger.getLogger(Search.class.getName());
private PLSQLNameOccurrence occ;
private Set<NameDeclaration> declarations = new HashSet<>();
public Search(PLSQLNameOccurrence occ) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest(
"new search for " + (occ.isMethodOrConstructorInvocation() ? "method" : "variable") + " " + occ);
}
this.occ = occ;
}
public void execute() {
Set<NameDeclaration> found = searchUpward(occ, occ.getLocation().getScope());
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("found " + found);
}
declarations.addAll(found);
}
public void execute(Scope startingScope) {
Set<NameDeclaration> found = searchUpward(occ, startingScope);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("found " + found);
}
declarations.addAll(found);
}
public Set<NameDeclaration> getResult() {
return declarations;
}
private Set<NameDeclaration> searchUpward(PLSQLNameOccurrence nameOccurrence, Scope scope) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("checking scope " + scope + " for name occurrence " + nameOccurrence);
}
if (!scope.contains(nameOccurrence) && scope.getParent() != null) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("moving up fm " + scope + " to " + scope.getParent());
}
return searchUpward(nameOccurrence, scope.getParent());
}
if (scope.contains(nameOccurrence)) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("found it!");
}
return scope.addNameOccurrence(nameOccurrence);
}
return new HashSet<>();
}
}