wehub-resource-sync
85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
// Copyright 2026 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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vitess "github.com/dolthub/vitess/go/vt/sqlparser"
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"github.com/dolthub/doltgresql/core/casts"
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"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
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"github.com/dolthub/doltgresql/server/auth"
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pgnodes "github.com/dolthub/doltgresql/server/node"
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)
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// nodeCreateCast handles *tree.CreateCast nodes.
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func nodeCreateCast(ctx *Context, node *tree.CreateCast) (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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_, sourceType, err := nodeResolvableTypeReference(ctx, node.Source, false)
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if err != nil {
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return nil, err
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}
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_, targetType, err := nodeResolvableTypeReference(ctx, node.Target, false)
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if err != nil {
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return nil, err
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}
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var funcName tree.TableName
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var funcParams []pgnodes.RoutineParam
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switch node.Type {
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case tree.CreateCastType_WithFunction:
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funcName = node.FuncName.ToTableName()
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funcParams = make([]pgnodes.RoutineParam, len(node.FuncArgs))
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for i, arg := range node.FuncArgs {
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funcParams[i].Name = arg.Name.String()
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_, funcParams[i].Type, err = nodeResolvableTypeReference(ctx, arg.Type, false)
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if err != nil {
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return nil, err
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}
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}
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case tree.CreateCastType_WithoutFunction:
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// TODO: restrict to superusers only with error: "must be superuser to create a cast WITHOUT FUNCTION"
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case tree.CreateCastType_Inout:
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// Nothing to do
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default:
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panic("unhandled case")
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}
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var scope casts.CastType
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switch node.Scope {
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case tree.CreateCastScope_Explicit:
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scope = casts.CastType_Explicit
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case tree.CreateCastScope_Assignment:
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scope = casts.CastType_Assignment
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case tree.CreateCastScope_Implicit:
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scope = casts.CastType_Implicit
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}
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return vitess.InjectedStatement{
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Statement: pgnodes.NewCreateCast(
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sourceType,
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targetType,
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scope,
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node.Type,
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funcName.Schema(),
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funcName.Table(),
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funcParams,
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),
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Auth: vitess.AuthInformation{
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AuthType: auth.AuthType_CREATE,
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TargetType: auth.AuthTargetType_TODO,
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TargetNames: []string{},
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},
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}, nil
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}
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