|
| 1 | +// |
| 2 | +// DISCLAIMER |
| 3 | +// |
| 4 | +// Copyright 2018 ArangoDB GmbH, Cologne, Germany |
| 5 | +// |
| 6 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +// you may not use this file except in compliance with the License. |
| 8 | +// 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, software |
| 13 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +// See the License for the specific language governing permissions and |
| 16 | +// limitations under the License. |
| 17 | +// |
| 18 | +// Copyright holder is ArangoDB GmbH, Cologne, Germany |
| 19 | +// |
| 20 | +// Author Adam Janikowski |
| 21 | +// |
| 22 | + |
| 23 | +package test |
| 24 | + |
| 25 | +import ( |
| 26 | + "fmt" |
| 27 | + |
| 28 | + "github.com/arangodb/go-driver" |
| 29 | +) |
| 30 | + |
| 31 | +type Operator string |
| 32 | + |
| 33 | +const ( |
| 34 | + AND Operator = "AND" |
| 35 | + OR Operator = "OR" |
| 36 | +) |
| 37 | + |
| 38 | +type Compare string |
| 39 | + |
| 40 | +const ( |
| 41 | + GT Compare = ">" |
| 42 | + GE Compare = ">=" |
| 43 | + LT Compare = "<" |
| 44 | + LE Compare = "<=" |
| 45 | + EQ Compare = "==" |
| 46 | + NE Compare = "!=" |
| 47 | +) |
| 48 | + |
| 49 | +func (c Compare) Compare(a, b driver.Version) bool { |
| 50 | + switch c { |
| 51 | + case GT: |
| 52 | + return a.CompareTo(b) > 0 |
| 53 | + case GE: |
| 54 | + return a.CompareTo(b) >= 0 |
| 55 | + case LT: |
| 56 | + return a.CompareTo(b) < 0 |
| 57 | + case LE: |
| 58 | + return a.CompareTo(b) <= 0 |
| 59 | + case EQ: |
| 60 | + return a.CompareTo(b) == 0 |
| 61 | + case NE: |
| 62 | + return a.CompareTo(b) != 0 |
| 63 | + default: |
| 64 | + return false |
| 65 | + } |
| 66 | +} |
| 67 | + |
| 68 | +func (c Compare) Than(a driver.Version) VersionChecker { |
| 69 | + return &basicVersionChecker{ |
| 70 | + Compare: c, |
| 71 | + Version: a, |
| 72 | + } |
| 73 | +} |
| 74 | + |
| 75 | +type VersionChecker interface { |
| 76 | + Or(v VersionChecker) VersionChecker |
| 77 | + And(v VersionChecker) VersionChecker |
| 78 | + Check(version driver.Version) bool |
| 79 | + String(version driver.Version) string |
| 80 | +} |
| 81 | + |
| 82 | +var _ VersionChecker = &basicVersionChecker{} |
| 83 | + |
| 84 | +type basicVersionChecker struct { |
| 85 | + Version driver.Version |
| 86 | + Compare Compare |
| 87 | +} |
| 88 | + |
| 89 | +func (b basicVersionChecker) Or(v VersionChecker) VersionChecker { |
| 90 | + return &mergedVersionChecker{ |
| 91 | + A: b, |
| 92 | + B: v, |
| 93 | + Operator: OR, |
| 94 | + } |
| 95 | +} |
| 96 | + |
| 97 | +func (b basicVersionChecker) And(v VersionChecker) VersionChecker { |
| 98 | + return &mergedVersionChecker{ |
| 99 | + A: b, |
| 100 | + B: v, |
| 101 | + Operator: AND, |
| 102 | + } |
| 103 | +} |
| 104 | + |
| 105 | +func (b basicVersionChecker) Check(version driver.Version) bool { |
| 106 | + return b.Compare.Compare(version, b.Version) |
| 107 | +} |
| 108 | + |
| 109 | +func (b basicVersionChecker) String(version driver.Version) string { |
| 110 | + return fmt.Sprintf("[%s] %s %s", version, b.Compare, b.Version) |
| 111 | +} |
| 112 | + |
| 113 | +var _ VersionChecker = &mergedVersionChecker{} |
| 114 | + |
| 115 | +type mergedVersionChecker struct { |
| 116 | + A, B VersionChecker |
| 117 | + Operator Operator |
| 118 | +} |
| 119 | + |
| 120 | +func (m mergedVersionChecker) Or(v VersionChecker) VersionChecker { |
| 121 | + return &mergedVersionChecker{ |
| 122 | + A: m, |
| 123 | + B: v, |
| 124 | + Operator: OR, |
| 125 | + } |
| 126 | +} |
| 127 | + |
| 128 | +func (m mergedVersionChecker) And(v VersionChecker) VersionChecker { |
| 129 | + return &mergedVersionChecker{ |
| 130 | + A: m, |
| 131 | + B: v, |
| 132 | + Operator: AND, |
| 133 | + } |
| 134 | +} |
| 135 | + |
| 136 | +func (m mergedVersionChecker) Check(version driver.Version) bool { |
| 137 | + if m.Operator == OR { |
| 138 | + return m.A.Check(version) || m.B.Check(version) |
| 139 | + } |
| 140 | + return m.A.Check(version) && m.B.Check(version) |
| 141 | +} |
| 142 | + |
| 143 | +func (m mergedVersionChecker) String(version driver.Version) string { |
| 144 | + return fmt.Sprintf("(%s) %s (%s)", m.A.String(version), m.Operator, m.B.String(version)) |
| 145 | +} |
0 commit comments