forgejo/vendor/github.com/pingcap/tidb/parser/opcode/opcode.go

83 lines
1.3 KiB
Go
Raw Normal View History

// Copyright 2015 PingCAP, 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package opcode
import "fmt"
// Op is opcode type.
type Op int
// List operators.
const (
AndAnd Op = iota + 1
LeftShift
RightShift
OrOr
GE
LE
EQ
NE
LT
GT
Plus
Minus
And
Or
Mod
Xor
Div
Mul
Not
BitNeg
IntDiv
LogicXor
NullEQ
)
var ops = map[Op]string{
AndAnd: "&&",
LeftShift: "<<",
RightShift: ">>",
OrOr: "||",
GE: ">=",
LE: "<=",
EQ: "=",
NE: "!=",
LT: "<",
GT: ">",
Plus: "+",
Minus: "-",
And: "&",
Or: "|",
Mod: "%",
Xor: "^",
Div: "/",
Mul: "*",
Not: "!",
BitNeg: "~",
IntDiv: "DIV",
LogicXor: "XOR",
NullEQ: "<=>",
}
// String implements Stringer interface.
func (o Op) String() string {
str, ok := ops[o]
if !ok {
panic(fmt.Sprintf("%d", o))
}
return str
}