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[stdlib] Make FixedWidthInteger.init?(_:radix:) always inlined, and fix a think-o.

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This commit is contained in:
Xiaodi Wu
2021-03-28 19:21:53 -04:00
parent ad992f48dd
commit a9c57c3bcd
1 changed files with 4 additions and 1 deletions
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5
stdlib/public/core/IntegerParsing.swift
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@@ -15,11 +15,12 @@
// made in sync.
@_alwaysEmitIntoClient
internal func _parseASCIIDigits<
UTF8CodeUnits: Sequence, Result: FixedWidthInteger
UTF8CodeUnits: Collection, Result: FixedWidthInteger
>(
_ codeUnits: UTF8CodeUnits, radix: Int, isNegative: Bool
) -> Result? where UTF8CodeUnits.Element == UInt8 {
_internalInvariant(radix >= 2 && radix <= 36)
guard _fastPath(!codeUnits.isEmpty) else { return nil }
let multiplicand = Result(radix)
var result = 0 as Result
if radix <= 10 {
@@ -74,6 +75,7 @@ internal func _parseASCIIDigits<Result: FixedWidthInteger>(
_ codeUnits: UnsafeBufferPointer<UInt8>, radix: Int, isNegative: Bool
) -> Result? {
_internalInvariant(radix >= 2 && radix <= 36)
guard _fastPath(!codeUnits.isEmpty) else { return nil }
let multiplicand = Result(radix)
var result = 0 as Result
if radix <= 10 {
@@ -191,6 +193,7 @@ extension FixedWidthInteger {
/// - radix: The radix, or base, to use for converting `text` to an integer
/// value. `radix` must be in the range `2...36`. The default is 10.
@inlinable
@inline(__always)
public init?<S: StringProtocol>(_ text: S, radix: Int = 10) {
_precondition(2...36 ~= radix, "Radix not in range 2...36")
guard _fastPath(!text.isEmpty) else { return nil }