Implement oid type

server/ast/resolvable_type_reference.go

@@ -109,6 +109,8 @@ func nodeResolvableTypeReference(typ tree.ResolvableTypeReference) (*vitess.Conv
 						Scale:     columnType.Scale(),
 					}
 				}
+			case oid.T_oid:
+				resolvedType = pgtypes.Oid
 			case oid.T_text:
 				resolvedType = pgtypes.Text
 			case oid.T_time:

server/cast/bool.go

@@ -67,6 +67,17 @@ func boolExplicit() {
 			return handleCharExplicitCast(str, targetType)
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Bool,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			if val.(bool) {
+				return uint32(1), nil
+			} else {
+				return uint32(0), nil
+			}
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Bool,
 		ToType:   pgtypes.Text,

server/cast/char.go

@@ -146,6 +146,21 @@ func charExplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.BpChar,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.BpChar,
 		ToType:   pgtypes.Text,
@@ -286,6 +301,21 @@ func charImplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.BpChar,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.BpChar,
 		ToType:   pgtypes.Text,

server/cast/init.go

@@ -26,6 +26,7 @@ func Init() {
 	initInt64()
 	initName()
 	initNumeric()
+	initOid()
 	initText()
 	initUuid()
 	initVarChar()

server/cast/int16.go

@@ -89,6 +89,13 @@ func int16Explicit() {
 			return decimal.NewFromInt(int64(val.(int16))), nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int16,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return uint32(val.(int16)), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int16,
 		ToType:   pgtypes.Text,
@@ -166,6 +173,13 @@ func int16Implicit() {
 			return decimal.NewFromInt(int64(val.(int16))), nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int16,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return uint32(val.(int16)), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int16,
 		ToType:   pgtypes.Text,

server/cast/int32.go

@@ -93,6 +93,13 @@ func int32Explicit() {
 			return decimal.NewFromInt(int64(val.(int32))), nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int32,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return uint32(val.(int32)), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int32,
 		ToType:   pgtypes.Text,
@@ -173,6 +180,13 @@ func int32Implicit() {
 			return decimal.NewFromInt(int64(val.(int32))), nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int32,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return uint32(val.(int32)), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int32,
 		ToType:   pgtypes.Text,

server/cast/int64.go

@@ -96,6 +96,16 @@ func int64Explicit() {
 			return decimal.NewFromInt(val.(int64)), nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int64,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			if val.(int64) > pgtypes.MaxUint32 || val.(int64) < 0 {
+				return nil, errOutOfRange.New(targetType.String())
+			}
+			return uint32(val.(int64)), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int64,
 		ToType:   pgtypes.Text,
@@ -179,6 +189,16 @@ func int64Implicit() {
 			return decimal.NewFromInt(val.(int64)), nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Int64,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			if val.(int64) > pgtypes.MaxUint32 || val.(int64) < 0 {
+				return nil, errOutOfRange.New(targetType.String())
+			}
+			return uint32(val.(int64)), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Int64,
 		ToType:   pgtypes.Text,

server/cast/name.go

@@ -146,6 +146,21 @@ func nameExplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Name,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Name,
 		ToType:   pgtypes.Text,
@@ -286,6 +301,21 @@ func nameImplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Name,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Name,
 		ToType:   pgtypes.Text,

server/cast/oid.go

@@ -0,0 +1,142 @@
+// Copyright 2024 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 cast
+
+import (
+	"strconv"
+
+	"github.com/dolthub/doltgresql/server/functions/framework"
+	pgtypes "github.com/dolthub/doltgresql/server/types"
+)
+
+// initOid handles all explicit and implicit casts that are built-in. This comprises only the "From" types.
+func initOid() {
+	oidExplicit()
+	oidImplicit()
+}
+
+// oidExplicit registers all explicit casts. This comprises only the "From" types.
+func oidExplicit() {
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.BpChar,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharExplicitCast(str, targetType)
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Int32,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			// Will return -1 for uint32 values greater than 2147483647
+			return int32(val.(uint32)), nil
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Int64,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return int64(val.(uint32)), nil
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Name,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharExplicitCast(str, targetType)
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return val, nil
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Text,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return strconv.FormatInt(int64(val.(uint32)), 10), nil
+		},
+	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.VarChar,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharExplicitCast(str, targetType)
+		},
+	})
+}
+
+// oidImplicit registers all implicit casts. This comprises only the "From" types.
+func oidImplicit() {
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.BpChar,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharImplicitCast(str, targetType)
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Int32,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			// Will return -1 for uint32 values greater than 2147483647
+			return int32(val.(uint32)), nil
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Int64,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return int64(val.(uint32)), nil
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Name,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharExplicitCast(str, targetType)
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return val, nil
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.Text,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			return strconv.FormatInt(int64(val.(uint32)), 10), nil
+		},
+	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Oid,
+		ToType:   pgtypes.VarChar,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			str := strconv.FormatInt(int64(val.(uint32)), 10)
+			return handleCharImplicitCast(str, targetType)
+		},
+	})
+}

server/cast/text.go

@@ -146,6 +146,21 @@ func textExplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddExplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Text,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddExplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Text,
 		ToType:   pgtypes.Text,
@@ -286,6 +301,21 @@ func textImplicit() {
 			return d, nil
 		},
 	})
+	framework.MustAddImplicitTypeCast(framework.TypeCast{
+		FromType: pgtypes.Text,
+		ToType:   pgtypes.Oid,
+		Function: func(ctx framework.Context, val any, targetType pgtypes.DoltgresType) (any, error) {
+			out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
+			}
+			// Note: This minimum is different (-4294967295) for Postgres 15.4 compiled by Visual C++
+			if out > pgtypes.MaxUint32 || out < pgtypes.MinInt32 {
+				return nil, fmt.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
+			}
+			return uint32(out), nil
+		},
+	})
 	framework.MustAddImplicitTypeCast(framework.TypeCast{
 		FromType: pgtypes.Text,
 		ToType:   pgtypes.Text,