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Allow conversions UUID <-> UInt128 #45

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Sep 2, 2023
Merged

Allow conversions UUID <-> UInt128 #45

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3bf70f6
Allow conversions UUID <-> UInt128
snofla Aug 15, 2023
d164aab
Optimize for speed
snofla Aug 15, 2023
06a88b9
Move new files to proper folder.
snofla Aug 16, 2023
b2e0679
Fix spelling.
snofla Aug 16, 2023
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46 changes: 46 additions & 0 deletions Sources/UInt128/UInt128+UUID.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,46 @@
//
// UInt128+UUID.swift
// UInt128
//
// Created by Alfons Hoogervorst on 15/08/2023.
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import Foundation

extension UInt128 {

/// Creates a UInt128 from a UUID. Since a UUID is always 128 bits,
/// no truncation is needed.
public init(uuid: UUID) {
let val = uuid.uuid
let lowerBits: UInt64 = UInt64(val.0) << (0 * 8) |
UInt64(val.1) << (1 * 8) |
UInt64(val.2) << (2 * 8) |
UInt64(val.3) << (3 * 8) |
UInt64(val.4) << (4 * 8) |
UInt64(val.5) << (5 * 8) |
UInt64(val.6) << (6 * 8) |
UInt64(val.7) << (7 * 8)
let upperBits: UInt64 = UInt64(val.8) << (0 * 8) |
UInt64(val.9) << (1 * 8) |
UInt64(val.10) << (2 * 8) |
UInt64(val.11) << (3 * 8) |
UInt64(val.12) << (4 * 8) |
UInt64(val.13) << (5 * 8) |
UInt64(val.14) << (6 * 8) |
UInt64(val.15) << (7 * 8)
self = .init(upperBits: upperBits, lowerBits: lowerBits)
}

}
50 changes: 50 additions & 0 deletions Sources/UInt128/UUID+UInt128.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,50 @@
//
// UUID+UInt128.swift
// UInt128
//
// Created by Alfons Hoogervorst on 15/08/2023.
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import Foundation


extension UUID {

/// Creates a UUID representation of a UInt128. Since a UUID is always
/// 128 bits, no truncation occurs.
public init(_ longInt: UInt128) {
let lowerBits = longInt.value.lowerBits
let upperBits = longInt.value.upperBits
let val: uuid_t = (
UInt8((lowerBits >> (0 * 8)) & 0xFF),
UInt8((lowerBits >> (1 * 8)) & 0xFF),
UInt8((lowerBits >> (2 * 8)) & 0xFF),
UInt8((lowerBits >> (3 * 8)) & 0xFF),
UInt8((lowerBits >> (4 * 8)) & 0xFF),
UInt8((lowerBits >> (5 * 8)) & 0xFF),
UInt8((lowerBits >> (6 * 8)) & 0xFF),
UInt8((lowerBits >> (7 * 8)) & 0xFF),
UInt8((upperBits >> (0 * 8)) & 0xFF),
UInt8((upperBits >> (1 * 8)) & 0xFF),
UInt8((upperBits >> (2 * 8)) & 0xFF),
UInt8((upperBits >> (3 * 8)) & 0xFF),
UInt8((upperBits >> (4 * 8)) & 0xFF),
UInt8((upperBits >> (5 * 8)) & 0xFF),
UInt8((upperBits >> (6 * 8)) & 0xFF),
UInt8((upperBits >> (7 * 8)) & 0xFF)
)
self = .init(uuid: val)
}

}
14 changes: 14 additions & 0 deletions Tests/UInt128Tests/UInt128PerformanceTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -40,4 +40,18 @@ final class CustomStringConvertiblePerformanceTests: XCTestCase {
_ = UInt128("0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF")!
}
}

}

final class UUIDConvertibalePerformanceTests: XCTestCase {

func testUUIDConversion() {
let uuid = UUID(uuidString: "1F349019-F3F5-489F-85F5-9CD214D6BD69")!
let options = XCTMeasureOptions()
options.iterationCount = 1000
self.measure(options: options) {
_ = UInt128(uuid: uuid)
}
}

}
19 changes: 19 additions & 0 deletions Tests/UInt128Tests/UInt128Tests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -1413,3 +1413,22 @@ class FloatingPointInterworkingTests: XCTestCase {
}
}
}

class UUIDTests: XCTestCase {
func testConvertUUID() {
let uuid = UUID(uuidString: "1F349019-F3F5-489F-85F5-9CD214D6BD69")!
let uint128 = UInt128(uuid: uuid)
let uuid128 = UUID(uint128)
XCTAssertEqual(uuid128, uuid)

let uuid0 = UUID(uuidString: "00000000-0000-0000-0000-000000000000")!
let uint1280 = UInt128(uuid: uuid0)
let uuid1280 = UUID(uint1280)
XCTAssertEqual(uuid1280, uuid0)

let uuidf = UUID(uuidString: "FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF")!
let uint128f = UInt128(uuid: uuidf)
let uuid128f = UUID(uint128f)
XCTAssertEqual(uuid128f, uuidf)
}
}
20 changes: 20 additions & 0 deletions UInt128.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,14 @@
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OBJ_21 /* UInt128.swift in Sources */ = {isa = PBXBuildFile; fileRef = OBJ_8 /* UInt128.swift */; };
OBJ_28 /* UInt128Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = OBJ_11 /* UInt128Tests.swift */; };
OBJ_30 /* UInt128.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = OBJ_14 /* UInt128.framework */; };
Expand Down Expand Up @@ -48,6 +56,8 @@
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48389B601EDB9F78008C1177 /* Playground.playground */ = {isa = PBXFileReference; lastKnownFileType = file.playground; path = Playground.playground; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.swift; };
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OBJ_11 /* UInt128Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UInt128Tests.swift; sourceTree = "<group>"; };
OBJ_14 /* UInt128.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = UInt128.framework; sourceTree = BUILT_PRODUCTS_DIR; };
OBJ_15 /* UInt128Tests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; path = UInt128Tests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
Expand Down Expand Up @@ -134,6 +144,8 @@
isa = PBXGroup;
children = (
OBJ_8 /* UInt128.swift */,
8609A4152A8CC63A00539492 /* UInt128+UUID.swift */,
8609A4162A8CC63A00539492 /* UUID+UInt128.swift */,
);
path = Sources;
sourceTree = SOURCE_ROOT;
Expand Down Expand Up @@ -326,6 +338,8 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 0;
files = (
8609A4172A8CC63A00539492 /* UInt128+UUID.swift in Sources */,
8609A41B2A8CC63A00539492 /* UUID+UInt128.swift in Sources */,
167CA9BD1EFCF3E50091689C /* UInt128.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
Expand All @@ -334,6 +348,8 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
8609A4192A8CC63A00539492 /* UInt128+UUID.swift in Sources */,
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481A30BA1F02FC6600C4438A /* UInt128.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
Expand All @@ -342,6 +358,8 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
8609A41A2A8CC63A00539492 /* UInt128+UUID.swift in Sources */,
8609A41E2A8CC63A00539492 /* UUID+UInt128.swift in Sources */,
481A30BB1F02FC6600C4438A /* UInt128.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
Expand All @@ -350,6 +368,8 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 0;
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8609A41C2A8CC63A00539492 /* UUID+UInt128.swift in Sources */,
OBJ_21 /* UInt128.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
Expand Down
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