// Copyright © 2016 Abcum Ltd
//
// 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 sql

func (p *parser) parseReturnStatement() (stmt *ReturnStatement, err error) {

	stmt = &ReturnStatement{}

	if stmt.KV, stmt.NS, stmt.DB, err = p.o.get(AuthSC); err != nil {
		return nil, err
	}

	// The next query part can be any expression
	// including a parenthesised expression or a
	// binary expression so handle accordingly.

	stmt.What, err = p.parseExpr()
	if err != nil {
		return nil, err
	}

	// Check that we have reached the end of the
	// statement with either a ';' or EOF.

	if _, _, err = p.shouldBe(EOF, SEMICOLON); err != nil {
		return nil, err
	}

	return

}