surrealpatch/sql/return.go

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2016-10-29 11:29:20 +00:00
// 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{}
for {
tok, lit, err := p.shouldBe(NULL, NOW, DATE, TIME, TRUE, FALSE, STRING, NUMBER, DOUBLE, PARAM)
if err != nil {
return nil, err
}
val, err := p.declare(tok, lit)
if err != nil {
return nil, err
}
stmt.What = append(stmt.What, val)
// If the next token is not a comma then break the loop.
if _, _, exi := p.mightBe(COMMA); !exi {
break
}
}
if _, _, err = p.shouldBe(EOF, SEMICOLON); err != nil {
return nil, err
}
return
}