// 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) parseWhat() (mul []Expr, err error) {

	for {

		_, _, exi := p.mightBe(EAT)

		if exi == false {
			one, err := p.parseTable()
			if err != nil {
				return nil, err
			}
			mul = append(mul, one)
		}

		if exi == true {
			p.unscan()
			one, err := p.parseThing()
			if err != nil {
				return nil, err
			}
			mul = append(mul, one)
		}

		// If the next token is not a comma then break the loop.
		if _, _, exi = p.mightBe(COMMA); !exi {
			break
		}

	}

	return

}