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