org.sonar.java.resolve.Scope Maven / Gradle / Ivy
/*
* SonarQube Java
* Copyright (C) 2012 SonarSource
* [email protected]
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.java.resolve;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ImmutableList;
import java.util.List;
/**
* Represents an area of visibility.
*/
public class Scope {
final Symbol owner;
final Scope next;
private ArrayListMultimap symbols = ArrayListMultimap.create();
public Scope(Symbol owner) {
this.owner = owner;
this.next = null;
}
public Scope(Scope next) {
this.owner = next.owner;
this.next = next;
}
public void enter(Symbol symbol) {
symbols.put(symbol.name, symbol);
}
public List lookup(String name) {
Scope scope = this;
while (scope != null && !scope.symbols.containsKey(name)) {
scope = scope.next;
}
return scope == null ? ImmutableList.of() : scope.symbols.get(name);
}
}