wehub-resource-sync
97 lines
3.5 KiB
Go
97 lines
3.5 KiB
Go
// Copyright 2024 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 cast
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import (
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"strconv"
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"strings"
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"github.com/cockroachdb/errors"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/core/casts"
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"github.com/dolthub/doltgresql/core/id"
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"github.com/dolthub/doltgresql/server/functions/framework"
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pgtypes "github.com/dolthub/doltgresql/server/types"
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)
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// initChar handles all casts that are built-in. This comprises only the source types.
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func initChar(builtInCasts map[id.Cast]casts.Cast) {
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charAssignment(builtInCasts)
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charExplicit(builtInCasts)
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charImplicit(builtInCasts)
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}
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// charAssignment registers all assignment casts. This comprises only the source types.
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func charAssignment(builtInCasts map[id.Cast]casts.Cast) {
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framework.MustAddAssignmentTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.InternalChar,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return targetType.IoInput(ctx, val.(string))
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},
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})
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}
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// charExplicit registers all explicit casts. This comprises only the source types.
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func charExplicit(builtInCasts map[id.Cast]casts.Cast) {
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framework.MustAddExplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.Int32,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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out, err := strconv.ParseInt(strings.TrimSpace(val.(string)), 10, 32)
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if err != nil {
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return nil, errors.Errorf("invalid input syntax for type %s: %q", targetType.String(), val.(string))
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}
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if out > 2147483647 || out < -2147483648 {
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return nil, errors.Errorf("value %q is out of range for type %s", val.(string), targetType.String())
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}
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return int32(out), nil
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},
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})
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}
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// charImplicit registers all implicit casts. This comprises only the source types.
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func charImplicit(builtInCasts map[id.Cast]casts.Cast) {
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.BpChar,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return targetType.IoInput(ctx, val.(string))
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},
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})
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.Name,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return handleStringCast(val.(string), targetType)
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},
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})
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.Text,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return val, nil
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},
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})
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.BpChar,
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ToType: pgtypes.VarChar,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return handleStringCast(val.(string), targetType)
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},
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})
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}
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