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Support up to 32 output tuple elements. Tests for array to tuple conv…
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…ersion.
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@DnV1eX
DnV1eX committed Jul 31, 2021
1 parent 888a26d commit c794df6
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24 changes: 23 additions & 1 deletion Sources/SQLiteCombine/SQLiteCombine.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -340,7 +340,7 @@ extension Result where Success == SQLite.DBResult, Failure == SQLite.DBError {



extension Array {
public extension Array {

func tuple() -> Any? {
switch count {
Expand All @@ -355,6 +355,28 @@ extension Array {
case 8: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7])
case 9: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8])
case 10: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9])
case 11: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10])
case 12: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11])
case 13: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12])
case 14: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13])
case 15: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14])
case 16: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15])
case 17: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16])
case 18: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17])
case 19: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18])
case 20: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19])
case 21: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20])
case 22: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21])
case 23: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22])
case 24: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23])
case 25: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24])
case 26: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25])
case 27: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26])
case 28: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26], self[27])
case 29: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26], self[27], self[28])
case 30: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26], self[27], self[28], self[29])
case 31: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26], self[27], self[28], self[29], self[30])
case 32: return (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9], self[10], self[11], self[12], self[13], self[14], self[15], self[16], self[17], self[18], self[19], self[20], self[21], self[22], self[23], self[24], self[25], self[26], self[27], self[28], self[29], self[30], self[31])
default: return nil
}
}
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12 changes: 12 additions & 0 deletions Tests/SQLiteCombineTests/SQLiteCombineTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -399,6 +399,18 @@ final class SQLiteCombineTests: XCTestCase {

waitForExpectations(timeout: 0, handler: nil)
}


func testArray2Tuple() throws {

XCTAssert([].tuple() as! () == ())
XCTAssertEqual([1].tuple() as? Int, 1)
for i in 2...32 {
let array = Array(1...i)
XCTAssertEqual(array.tuple().map(Mirror.init)?.children.map(\.value) as? [Int], array)
}
XCTAssertNil(Array(1...33).tuple())
}
}


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