wehub-resource-sync
80 lines
2.8 KiB
Go
80 lines
2.8 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 types
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import (
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"encoding/binary"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/core/id"
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)
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// Int16 is an int16.
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var Int16 = &DoltgresType{
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ID: toInternal("int2"),
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TypLength: int16(2),
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PassedByVal: true,
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TypType: TypeType_Base,
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TypCategory: TypeCategory_NumericTypes,
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IsPreferred: false,
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IsDefined: true,
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Delimiter: ",",
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RelID: id.Null,
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SubscriptFunc: toFuncID("-"),
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Elem: internalNullType,
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Array: internalNullType,
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InputFunc: toFuncID("int2in", toInternal("cstring")),
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OutputFunc: toFuncID("int2out", toInternal("int2")),
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ReceiveFunc: toFuncID("int2recv", toInternal("internal")),
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SendFunc: toFuncID("int2send", toInternal("int2")),
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ModInFunc: toFuncID("-"),
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ModOutFunc: toFuncID("-"),
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AnalyzeFunc: toFuncID("-"),
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Align: TypeAlignment_Short,
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Storage: TypeStorage_Plain,
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NotNull: false,
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BaseTypeType: internalNullType,
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TypMod: -1,
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NDims: 0,
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TypCollation: id.NullCollation,
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DefaulBin: "",
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Default: "",
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Acl: nil,
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Checks: nil,
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attTypMod: -1,
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CompareFunc: toFuncID("btint2cmp", toInternal("int2"), toInternal("int2")),
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InternalName: "smallint",
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SerializationFunc: serializeTypeInt16,
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DeserializationFunc: deserializeTypeInt16,
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}
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// serializeTypeInt16 handles serialization from the standard representation to our serialized representation that is
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// written in Dolt.
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func serializeTypeInt16(ctx *sql.Context, t *DoltgresType, val any) ([]byte, error) {
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retVal := make([]byte, 2)
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binary.BigEndian.PutUint16(retVal, uint16(val.(int16))+(1<<15))
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return retVal, nil
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}
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// deserializeTypeInt16 handles deserialization from the Dolt serialized format to our standard representation used by
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// expressions and nodes.
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func deserializeTypeInt16(ctx *sql.Context, t *DoltgresType, data []byte) (any, error) {
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if len(data) == 0 {
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return nil, nil
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}
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return int16(binary.BigEndian.Uint16(data) - (1 << 15)), nil
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}
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