surrealpatch/sql/token.go
2019-01-31 12:38:23 +00:00

100 lines
2 KiB
Go

// 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) parseDefineTokenStatement() (stmt *DefineTokenStatement, err error) {
stmt = &DefineTokenStatement{}
stmt.What = &Ident{}
if stmt.Name, err = p.parseIdent(); err != nil {
return nil, err
}
if _, _, err = p.shouldBe(ON); err != nil {
return nil, err
}
if stmt.Kind, _, err = p.shouldBe(NAMESPACE, DATABASE, SCOPE); err != nil {
return nil, err
}
if is(stmt.Kind, SCOPE) {
if stmt.What, err = p.parseIdent(); err != nil {
return nil, err
}
}
for {
tok, _, exi := p.mightBe(TYPE, VALUE)
if !exi {
break
}
if is(tok, TYPE) {
if stmt.Type, err = p.parseAlgorithm(); err != nil {
return nil, err
}
}
if is(tok, VALUE) {
if stmt.Code, err = p.parseBinary(); err != nil {
return nil, err
}
}
}
if stmt.Type == "" {
return nil, &ParseError{Found: "", Expected: []string{"TYPE"}}
}
if len(stmt.Code) == 0 {
return nil, &ParseError{Found: "", Expected: []string{"VALUE"}}
}
return
}
func (p *parser) parseRemoveTokenStatement() (stmt *RemoveTokenStatement, err error) {
stmt = &RemoveTokenStatement{}
stmt.What = &Ident{}
if stmt.Name, err = p.parseIdent(); err != nil {
return nil, err
}
if _, _, err = p.shouldBe(ON); err != nil {
return nil, err
}
if stmt.Kind, _, err = p.shouldBe(NAMESPACE, DATABASE, SCOPE); err != nil {
return nil, err
}
if is(stmt.Kind, SCOPE) {
if stmt.What, err = p.parseIdent(); err != nil {
return nil, err
}
}
return
}