chore: import upstream snapshot with attribution

server/ast/values_clause.go

@@ -0,0 +1,48 @@
+// Copyright 2023 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ast
+
+import (
+	vitess "github.com/dolthub/vitess/go/vt/sqlparser"
+
+	"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
+)
+
+// nodeValuesClause handles tree.ValuesClause nodes.
+func nodeValuesClause(ctx *Context, node *tree.ValuesClause) (*vitess.Select, error) {
+	if node == nil {
+		return nil, nil
+	}
+	valTuples := make([]vitess.ValTuple, len(node.Rows))
+	for i := range node.Rows {
+		exprs, err := nodeExprs(ctx, node.Rows[i])
+		if err != nil {
+			return nil, err
+		}
+		valTuples[i] = vitess.ValTuple(exprs)
+	}
+	return &vitess.Select{
+		SelectExprs: vitess.SelectExprs{
+			&vitess.StarExpr{},
+		},
+		From: vitess.TableExprs{
+			&vitess.AliasedTableExpr{
+				Expr: &vitess.ValuesStatement{
+					Rows: valTuples,
+				},
+			},
+		},
+	}, nil
+}