wehub-resource-sync
102 lines
3.8 KiB
Go
102 lines
3.8 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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"github.com/cockroachdb/apd/v3"
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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/go-mysql-server/sql/types"
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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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// initNumeric handles all casts that are built-in. This comprises only the source types.
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func initNumeric(builtInCasts map[id.Cast]casts.Cast) {
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numericAssignment(builtInCasts)
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numericImplicit(builtInCasts)
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}
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// numericAssignment registers all assignment casts. This comprises only the source types.
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func numericAssignment(builtInCasts map[id.Cast]casts.Cast) {
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framework.MustAddAssignmentTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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ToType: pgtypes.Int16,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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d := val.(*apd.Decimal)
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if d.Cmp(pgtypes.NumericValueMinInt16) < 0 || d.Cmp(pgtypes.NumericValueMaxInt16) > 0 {
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return nil, errors.Wrap(pgtypes.ErrCastOutOfRange, "smallint out of range")
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}
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i := types.DecimalRoundedIntPart(d)
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return int16(i), nil
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},
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})
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framework.MustAddAssignmentTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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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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d := val.(*apd.Decimal)
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if d.Cmp(pgtypes.NumericValueMinInt32) < 0 || d.Cmp(pgtypes.NumericValueMaxInt32) > 0 {
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return nil, errors.Wrap(pgtypes.ErrCastOutOfRange, "integer out of range")
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}
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i := types.DecimalRoundedIntPart(d)
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return int32(i), nil
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},
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})
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framework.MustAddAssignmentTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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ToType: pgtypes.Int64,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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d := val.(*apd.Decimal)
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if d.Cmp(pgtypes.NumericValueMinInt64) < 0 || d.Cmp(pgtypes.NumericValueMaxInt64) > 0 {
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return nil, errors.Wrap(pgtypes.ErrCastOutOfRange, "bigint out of range")
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}
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return types.DecimalRoundedIntPart(d), nil
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},
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})
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}
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// numericImplicit registers all implicit casts. This comprises only the source types.
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func numericImplicit(builtInCasts map[id.Cast]casts.Cast) {
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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ToType: pgtypes.Float32,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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d := val.(*apd.Decimal)
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f, _ := d.Float64()
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return float32(f), nil
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},
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})
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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ToType: pgtypes.Float64,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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d := val.(*apd.Decimal)
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f, _ := d.Float64()
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return f, nil
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},
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})
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framework.MustAddImplicitTypeCast(builtInCasts, framework.TypeCast{
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FromType: pgtypes.Numeric,
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ToType: pgtypes.Numeric,
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Function: func(ctx *sql.Context, val any, _, targetType *pgtypes.DoltgresType) (any, error) {
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return pgtypes.GetNumericValueWithTypmod(val.(*apd.Decimal), targetType.GetAttTypMod())
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},
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})
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}
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