org.neo4j.cypher.internal.parser.CypherParser.scala Maven / Gradle / Ivy
/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [http://neo4j.com]
*
* 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 org.neo4j.cypher.internal.parser
import org.neo4j.cypher.internal.ast
import org.neo4j.cypher.internal.util.CypherException
import org.neo4j.cypher.internal.util.CypherExceptionFactory
import org.neo4j.cypher.internal.util.InputPosition
import org.parboiled.scala.EOI
import org.parboiled.scala.Parser
import org.parboiled.scala.Rule1
/**
* Parser for Cypher queries.
*/
class CypherParser extends Parser
with Statement
with Expressions {
@throws(classOf[CypherException])
def parse(queryText: String, cypherExceptionFactory: CypherExceptionFactory, offset: Option[InputPosition] = None): ast.Statement =
parseOrThrow(queryText, cypherExceptionFactory, offset, CypherParser.Statements)
}
object CypherParser extends Parser with Statement with Expressions {
val Statements: Rule1[Seq[ast.Statement]] = rule {
oneOrMore(WS ~ Statement ~ WS, separator = ch(';')) ~~ optional(ch(';')) ~~ EOI.label("end of input")
}
}
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