/*
* SonarQube Java
* Copyright (C) 2012-2016 SonarSource SA
* mailto:contact AT sonarsource DOT com
*
* 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 02110-1301, USA.
*/
package org.sonar.java.resolve;
import org.sonar.plugins.java.api.semantic.Type;
import org.sonar.plugins.java.api.tree.BaseTreeVisitor;
import org.sonar.plugins.java.api.tree.ClassTree;
import org.sonar.plugins.java.api.tree.ExpressionTree;
import org.sonar.plugins.java.api.tree.LambdaExpressionTree;
import org.sonar.plugins.java.api.tree.ReturnStatementTree;
import java.util.HashSet;
import java.util.Set;
public class LambdaBlockReturnVisitor extends BaseTreeVisitor {
final Set<Type> types = new HashSet<>();
@Override
public void visitClass(ClassTree tree) {
// skip visiting inner classes : only first level returns are interesting
}
@Override
public void visitLambdaExpression(LambdaExpressionTree lambdaExpressionTree) {
// skip visiting lambdas : only first level returns are interesting
}
@Override
public void visitReturnStatement(ReturnStatementTree tree) {
ExpressionTree expression = tree.expression();
if (expression != null && !expression.symbolType().isUnknown()) {
types.add(expression.symbolType());
}
}
}