| Rohan Agrawal | c32d993 | 2020-06-15 11:01:47 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | |
| 20 | package thrift |
| 21 | |
| 22 | import ( |
| 23 | "math" |
| 24 | "strconv" |
| 25 | ) |
| 26 | |
| 27 | type Numeric interface { |
| 28 | Int64() int64 |
| 29 | Int32() int32 |
| 30 | Int16() int16 |
| 31 | Byte() byte |
| 32 | Int() int |
| 33 | Float64() float64 |
| 34 | Float32() float32 |
| 35 | String() string |
| 36 | isNull() bool |
| 37 | } |
| 38 | |
| 39 | type numeric struct { |
| 40 | iValue int64 |
| 41 | dValue float64 |
| 42 | sValue string |
| 43 | isNil bool |
| 44 | } |
| 45 | |
| 46 | var ( |
| 47 | INFINITY Numeric |
| 48 | NEGATIVE_INFINITY Numeric |
| 49 | NAN Numeric |
| 50 | ZERO Numeric |
| 51 | NUMERIC_NULL Numeric |
| 52 | ) |
| 53 | |
| 54 | func NewNumericFromDouble(dValue float64) Numeric { |
| 55 | if math.IsInf(dValue, 1) { |
| 56 | return INFINITY |
| 57 | } |
| 58 | if math.IsInf(dValue, -1) { |
| 59 | return NEGATIVE_INFINITY |
| 60 | } |
| 61 | if math.IsNaN(dValue) { |
| 62 | return NAN |
| 63 | } |
| 64 | iValue := int64(dValue) |
| 65 | sValue := strconv.FormatFloat(dValue, 'g', 10, 64) |
| 66 | isNil := false |
| 67 | return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil} |
| 68 | } |
| 69 | |
| 70 | func NewNumericFromI64(iValue int64) Numeric { |
| 71 | dValue := float64(iValue) |
| 72 | sValue := string(iValue) |
| 73 | isNil := false |
| 74 | return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil} |
| 75 | } |
| 76 | |
| 77 | func NewNumericFromI32(iValue int32) Numeric { |
| 78 | dValue := float64(iValue) |
| 79 | sValue := string(iValue) |
| 80 | isNil := false |
| 81 | return &numeric{iValue: int64(iValue), dValue: dValue, sValue: sValue, isNil: isNil} |
| 82 | } |
| 83 | |
| 84 | func NewNumericFromString(sValue string) Numeric { |
| 85 | if sValue == INFINITY.String() { |
| 86 | return INFINITY |
| 87 | } |
| 88 | if sValue == NEGATIVE_INFINITY.String() { |
| 89 | return NEGATIVE_INFINITY |
| 90 | } |
| 91 | if sValue == NAN.String() { |
| 92 | return NAN |
| 93 | } |
| 94 | iValue, _ := strconv.ParseInt(sValue, 10, 64) |
| 95 | dValue, _ := strconv.ParseFloat(sValue, 64) |
| 96 | isNil := len(sValue) == 0 |
| 97 | return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNil} |
| 98 | } |
| 99 | |
| 100 | func NewNumericFromJSONString(sValue string, isNull bool) Numeric { |
| 101 | if isNull { |
| 102 | return NewNullNumeric() |
| 103 | } |
| 104 | if sValue == JSON_INFINITY { |
| 105 | return INFINITY |
| 106 | } |
| 107 | if sValue == JSON_NEGATIVE_INFINITY { |
| 108 | return NEGATIVE_INFINITY |
| 109 | } |
| 110 | if sValue == JSON_NAN { |
| 111 | return NAN |
| 112 | } |
| 113 | iValue, _ := strconv.ParseInt(sValue, 10, 64) |
| 114 | dValue, _ := strconv.ParseFloat(sValue, 64) |
| 115 | return &numeric{iValue: iValue, dValue: dValue, sValue: sValue, isNil: isNull} |
| 116 | } |
| 117 | |
| 118 | func NewNullNumeric() Numeric { |
| 119 | return &numeric{iValue: 0, dValue: 0.0, sValue: "", isNil: true} |
| 120 | } |
| 121 | |
| 122 | func (p *numeric) Int64() int64 { |
| 123 | return p.iValue |
| 124 | } |
| 125 | |
| 126 | func (p *numeric) Int32() int32 { |
| 127 | return int32(p.iValue) |
| 128 | } |
| 129 | |
| 130 | func (p *numeric) Int16() int16 { |
| 131 | return int16(p.iValue) |
| 132 | } |
| 133 | |
| 134 | func (p *numeric) Byte() byte { |
| 135 | return byte(p.iValue) |
| 136 | } |
| 137 | |
| 138 | func (p *numeric) Int() int { |
| 139 | return int(p.iValue) |
| 140 | } |
| 141 | |
| 142 | func (p *numeric) Float64() float64 { |
| 143 | return p.dValue |
| 144 | } |
| 145 | |
| 146 | func (p *numeric) Float32() float32 { |
| 147 | return float32(p.dValue) |
| 148 | } |
| 149 | |
| 150 | func (p *numeric) String() string { |
| 151 | return p.sValue |
| 152 | } |
| 153 | |
| 154 | func (p *numeric) isNull() bool { |
| 155 | return p.isNil |
| 156 | } |
| 157 | |
| 158 | func init() { |
| 159 | INFINITY = &numeric{iValue: 0, dValue: math.Inf(1), sValue: "Infinity", isNil: false} |
| 160 | NEGATIVE_INFINITY = &numeric{iValue: 0, dValue: math.Inf(-1), sValue: "-Infinity", isNil: false} |
| 161 | NAN = &numeric{iValue: 0, dValue: math.NaN(), sValue: "NaN", isNil: false} |
| 162 | ZERO = &numeric{iValue: 0, dValue: 0, sValue: "0", isNil: false} |
| 163 | NUMERIC_NULL = &numeric{iValue: 0, dValue: 0, sValue: "0", isNil: true} |
| 164 | } |