wehub-resource-sync
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// Copyright 2023 Dolthub, Inc.
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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 ast
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import (
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"github.com/cockroachdb/errors"
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vitess "github.com/dolthub/vitess/go/vt/sqlparser"
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"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
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pgnodes "github.com/dolthub/doltgresql/server/node"
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)
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// nodeDropRole handles *tree.DropRole nodes.
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func nodeDropRole(ctx *Context, node *tree.DropRole) (vitess.Statement, error) {
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if node == nil {
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return nil, nil
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}
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var names []string
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for _, name := range node.Names {
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switch name := name.(type) {
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case *tree.StrVal:
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names = append(names, name.RawString())
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default:
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return nil, errors.Errorf("unknown type `%T` for DROP ROLE name", name)
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}
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}
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// Rather than account for every string type for error checking, we can just do it in a second loop
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for _, name := range names {
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switch name {
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case `public`, `current_role`, `current_user`, `session_user`:
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return nil, errors.New("cannot use special role specifier in DROP ROLE")
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}
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}
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return vitess.InjectedStatement{
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Statement: &pgnodes.DropRole{
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Names: names,
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IfExists: node.IfExists,
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},
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Children: nil,
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}, nil
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}
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