org.openrewrite.java.UnwrapParentheses Maven / Gradle / Ivy

/*
 * Copyright 2020 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 

 * https://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.openrewrite.java;

import org.openrewrite.Cursor;
import org.openrewrite.java.tree.J;

public class UnwrapParentheses extends JavaRefactorVisitor {
    private final J.Parentheses scope;

    public UnwrapParentheses(J.Parentheses scope) {
        this.scope = scope;
        setCursoringOn();
    }

    @Override
    public  J visitParentheses(J.Parentheses parens) {
        return scope.isScope(parens) && isUnwrappable(getCursor()) ?
                parens.getTree().withFormatting(parens.getFormatting()) :
                super.visitParentheses(parens);
    }

    public static boolean isUnwrappable(Cursor parensScope) {
        if(!(parensScope.getTree() instanceof J.Parentheses)) {
            return false;
        }
        J parent = parensScope.getParentOrThrow().getTree();
        return !(parent instanceof J.DoWhileLoop.While ||
                parent instanceof J.If ||
                parent instanceof J.Switch ||
                parent instanceof J.Synchronized ||
                parent instanceof J.Try.Catch ||
                parent instanceof J.TypeCast ||
                parent instanceof J.WhileLoop);
    }
}