wehub-resource-sync
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
// Copyright 2025 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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"fmt"
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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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// nodeDropFunction handles *tree.DropFunction nodes.
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func nodeDropFunction(ctx *Context, node *tree.DropFunction) (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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if node.DropBehavior == tree.DropCascade {
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return nil, fmt.Errorf("DROP FUNCTION with CASCADE is not supported yet")
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}
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if len(node.Functions) == 0 {
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return nil, fmt.Errorf("no function name specified for DROP FUNCTION")
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}
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functions := make([]*pgnodes.RoutineWithParams, len(node.Functions))
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for i, fn := range node.Functions {
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var args []pgnodes.RoutineParam
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for _, a := range fn.Args {
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if a.Mode != tree.RoutineArgModeOut {
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_, dt, err := nodeResolvableTypeReference(ctx, a.Type, false)
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if err != nil {
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return nil, err
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}
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args = append(args, pgnodes.RoutineParam{
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Name: a.Name.String(),
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Type: dt,
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})
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}
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}
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objName := fn.Name.ToTableName()
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functions[i] = &pgnodes.RoutineWithParams{
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Args: args,
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SchemaName: objName.Schema(),
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RoutineName: objName.Object(),
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}
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}
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return vitess.InjectedStatement{
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Statement: pgnodes.NewDropFunction(
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node.IfExists,
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functions,
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node.DropBehavior == tree.DropCascade),
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Children: nil,
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}, nil
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}
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