wehub-resource-sync
120 lines
4.3 KiB
Go
120 lines
4.3 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 unary
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import (
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"github.com/cockroachdb/apd/v3"
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"github.com/dolthub/go-mysql-server/sql"
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"github.com/dolthub/doltgresql/postgres/parser/duration"
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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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// These functions can be gathered using the following query from a Postgres 15 instance:
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// SELECT * FROM pg_operator o WHERE o.oprname = '-' AND o.oprleft = 0 ORDER BY o.oprcode::varchar;
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// initUnaryMinus registers the functions to the catalog.
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func initUnaryMinus() {
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, float4um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, float8um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, int2um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, int4um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, int8um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, interval_um)
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framework.RegisterUnaryFunction(framework.Operator_UnaryMinus, numeric_uminus)
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}
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// float4um represents the PostgreSQL function of the same name, taking the same parameters.
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var float4um = framework.Function1{
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Name: "float4um",
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Return: pgtypes.Float32,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Float32},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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return -(val1.(float32)), nil
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},
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}
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// float8um represents the PostgreSQL function of the same name, taking the same parameters.
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var float8um = framework.Function1{
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Name: "float8um",
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Return: pgtypes.Float64,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Float64},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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return -(val1.(float64)), nil
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},
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}
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// int2um represents the PostgreSQL function of the same name, taking the same parameters.
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var int2um = framework.Function1{
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Name: "int2um",
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Return: pgtypes.Int16,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Int16},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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return -(val1.(int16)), nil
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},
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}
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// int4um represents the PostgreSQL function of the same name, taking the same parameters.
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var int4um = framework.Function1{
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Name: "int4um",
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Return: pgtypes.Int32,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Int32},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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return -(val1.(int32)), nil
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},
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}
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// int8um represents the PostgreSQL function of the same name, taking the same parameters.
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var int8um = framework.Function1{
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Name: "int8um",
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Return: pgtypes.Int64,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Int64},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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return -(val1.(int64)), nil
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},
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}
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// interval_um represents the PostgreSQL function of the same name, taking the same parameters.
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var interval_um = framework.Function1{
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Name: "interval_um",
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Return: pgtypes.Interval,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Interval},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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dur := val1.(duration.Duration)
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return dur.Mul(-1), nil
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},
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}
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// numeric_uminus represents the PostgreSQL function of the same name, taking the same parameters.
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var numeric_uminus = framework.Function1{
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Name: "numeric_uminus",
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Return: pgtypes.Numeric,
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Parameters: [1]*pgtypes.DoltgresType{pgtypes.Numeric},
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Strict: true,
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Callable: func(ctx *sql.Context, _ [2]*pgtypes.DoltgresType, val1 any) (any, error) {
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dec := val1.(*apd.Decimal)
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res := new(apd.Decimal)
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return res.Neg(dec), nil
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},
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}
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