ExtractingVisitors.java

/*
 * Copyright (C) 2007-2010 J��lio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2024 The JavaParser Team.
 *
 * This file is part of JavaParser.
 *
 * JavaParser can be used either under the terms of
 * a) 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.
 * b) the terms of the Apache License
 *
 * You should have received a copy of both licenses in LICENCE.LGPL and
 * LICENCE.APACHE. Please refer to those files for details.
 *
 * JavaParser 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.
 */
package com.github.javaparser.utils;

import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.expr.CharLiteralExpr;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.GenericVisitorAdapter;
import java.util.ArrayList;
import java.util.List;

public final class ExtractingVisitors {

    private static <N extends Node> List<N> extract(Node node, GenericVisitor<Void, List<N>> extractCharLiteralExprs) {
        List<N> list = new ArrayList<>();
        node.accept(extractCharLiteralExprs, list);
        return list;
    }

    public static List<CharLiteralExpr> extractCharLiteralExprs(Node node) {
        return extract(node, new GenericVisitorAdapter<Void, List<CharLiteralExpr>>() {
            @Override
            public Void visit(CharLiteralExpr n, List<CharLiteralExpr> accumulator) {
                accumulator.add(n);
                return super.visit(n, accumulator);
            }
        });
    }
}