wehub-resource-sync
59 lines
1.7 KiB
Go
59 lines
1.7 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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vitess "github.com/dolthub/vitess/go/vt/sqlparser"
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"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
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)
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// nodeUpdateExpr handles *tree.UpdateExpr nodes.
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func nodeUpdateExpr(ctx *Context, node *tree.UpdateExpr) (vitess.AssignmentExprs, error) {
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if node == nil {
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return nil, nil
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}
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expr, err := nodeExpr(ctx, node.Expr)
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if err != nil {
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return nil, err
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}
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var assignmentExprs []*vitess.AssignmentExpr
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for _, name := range node.Names {
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assignmentExprs = append(assignmentExprs, &vitess.AssignmentExpr{
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Name: &vitess.ColName{
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Name: vitess.NewColIdent(string(name)),
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},
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Expr: expr,
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})
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}
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return assignmentExprs, nil
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}
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// nodeUpdateExprs handles tree.UpdateExprs nodes.
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func nodeUpdateExprs(ctx *Context, node tree.UpdateExprs) (vitess.AssignmentExprs, error) {
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if len(node) == 0 {
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return nil, nil
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}
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var assignmentExprs vitess.AssignmentExprs
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for i := range node {
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newAssignmentExprs, err := nodeUpdateExpr(ctx, node[i])
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if err != nil {
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return nil, err
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}
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assignmentExprs = append(assignmentExprs, newAssignmentExprs...)
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}
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return assignmentExprs, nil
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}
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