43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package db
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import (
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"context"
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"github.com/abcum/surreal/sql"
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"github.com/abcum/surreal/util/data"
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)
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func (e *executor) executeLet(ctx context.Context, stm *sql.LetStatement) (out []interface{}, err error) {
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var vars = ctx.Value(ctxKeyVars).(*data.Doc)
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switch what := stm.What.(type) {
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case *sql.Void:
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vars.Del(stm.Name.ID)
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case *sql.Empty:
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vars.Del(stm.Name.ID)
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default:
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val, err := e.fetch(ctx, what, nil)
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if err != nil {
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return nil, err
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}
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vars.Set(val, stm.Name.ID)
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}
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return
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}
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