com.netflix.rewrite.ast.visitor.RetrieveCursorVisitor.kt Maven / Gradle / Ivy

/**
 * Copyright 2016 Netflix, Inc.
 *
 * 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
 *
 *     http://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 com.netflix.rewrite.ast.visitor

import com.netflix.rewrite.ast.Cursor
import com.netflix.rewrite.ast.Tree

class RetrieveCursorVisitor(val treeId: Long?) : AstVisitor(null) {
    constructor(t: Tree?) : this(t?.id)

    override fun visitTree(t: Tree): Cursor? =
            if (treeId == t.id) cursor() else super.visitTree(t)
}