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AcceptVisitor.scala
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AcceptVisitor.scala
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/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.cypher.internal.compatibility.v3_3.runtime.compiled.codegen.ir
import org.neo4j.cypher.internal.compatibility.v3_3.runtime.compiled.codegen.CodeGenContext
import org.neo4j.cypher.internal.compatibility.v3_3.runtime.compiled.codegen.ir.expressions.CodeGenExpression
import org.neo4j.cypher.internal.compatibility.v3_3.runtime.compiled.codegen.spi.MethodStructure
case class AcceptVisitor(produceResultOpName: String, columns: Map[String, CodeGenExpression])
extends Instruction {
override def body[E](generator: MethodStructure[E])(implicit context: CodeGenContext) = {
generator.trace(produceResultOpName) { body =>
body.incrementRows()
columns.foreach { case (k, v) =>
body.setInRow(k, generator.box(v.generateExpression(body), v.codeGenType))
}
body.visitorAccept()
}
}
override protected def operatorId = Set(produceResultOpName)
override protected def children = Seq.empty
override def init[E](generator: MethodStructure[E])(implicit context: CodeGenContext) {
columns.values.foreach(_.init(generator))
super.init(generator)
}
}