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 com.google.common.collect.Lists;
import java.util.ArrayList;
import java.util.List;
/**
* Represents an area of visibility.
*/
public class Scope {
final JavaSymbol owner;
final Scope next;
protected ArrayListMultimap symbols = ArrayListMultimap.create();
private final List scopeSymbols = new ArrayList<>();
public Scope(JavaSymbol owner) {
this.owner = owner;
this.next = null;
}
public Scope(Scope next) {
this.owner = next.owner;
this.next = next;
}
public void enter(JavaSymbol symbol) {
symbols.put(symbol.name, symbol);
scopeSymbols.add(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);
}
public List scopeSymbols() {
return scopeSymbols;
}
public static class StarImportScope extends Scope {
private final BytecodeCompleter bytecodeCompleter;
public StarImportScope(JavaSymbol owner, BytecodeCompleter bytecodeCompleter) {
super(owner);
this.bytecodeCompleter = bytecodeCompleter;
}
@Override
public List lookup(String name) {
List symbolsList = Lists.newArrayList();
for (JavaSymbol site : symbols.values()) {
JavaSymbol symbol = bytecodeCompleter.loadClass(bytecodeCompleter.formFullName(name, site));
if (symbol.kind < JavaSymbol.ERRONEOUS) {
symbolsList.add(symbol);
}
}
return symbolsList;
}
}
public static class StaticStarImportScope extends Scope {
private final BytecodeCompleter bytecodeCompleter;
public StaticStarImportScope(JavaSymbol owner, BytecodeCompleter bytecodeCompleter) {
super(owner);
this.bytecodeCompleter = bytecodeCompleter;
}
@Override
public List lookup(String name) {
List symbolsList = Lists.newArrayList();
for (JavaSymbol site : symbols.values()) {
// site is a package, try to load referenced type.
if ((site.kind & JavaSymbol.PCK) != 0) {
JavaSymbol symbol = bytecodeCompleter.loadClass(bytecodeCompleter.formFullName(name, site));
if (symbol.kind < JavaSymbol.ERRONEOUS) {
symbolsList.add(symbol);
}
}
// site is a type, try to find a matching type or field
if ((site.kind & JavaSymbol.TYP) != 0) {
List resolved = ((JavaSymbol.TypeJavaSymbol) site).members().lookup(name);
for (JavaSymbol symbol : resolved) {
// TODO check accessibility
// TODO factorize with static named import ?
if (symbol.kind < JavaSymbol.ERRONEOUS && (symbol.flags & Flags.STATIC) != 0) {
symbolsList.add(symbol);
}
}
}
}
return symbolsList;
}
}
}