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[stdlib] Underscore/sanityCheck Unicode internals

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This completes the work of r22178

Swift SVN r22180
This commit is contained in:
Dave Abrahams
2014-09-22 20:41:08 +00:00
parent 143e6cb557
commit 98c7b6401b
1 changed files with 10 additions and 8 deletions
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18
stdlib/core/Unicode.swift
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@@ -732,15 +732,15 @@ internal func _transcodeSomeUTF16AsUTF8<
}
internal protocol _StringElementType {
class func toUTF16CodeUnit(_: Self) -> UTF16.CodeUnit
class func fromUTF16CodeUnit(utf16: UTF16.CodeUnit) -> Self
class func _toUTF16CodeUnit(_: Self) -> UTF16.CodeUnit
class func _fromUTF16CodeUnit(utf16: UTF16.CodeUnit) -> Self
}
extension UTF16.CodeUnit : _StringElementType {
internal static func toUTF16CodeUnit(x: UTF16.CodeUnit) -> UTF16.CodeUnit {
internal static func _toUTF16CodeUnit(x: UTF16.CodeUnit) -> UTF16.CodeUnit {
return x
}
internal static func fromUTF16CodeUnit(
internal static func _fromUTF16CodeUnit(
utf16: UTF16.CodeUnit
) -> UTF16.CodeUnit {
return utf16
@@ -748,12 +748,14 @@ extension UTF16.CodeUnit : _StringElementType {
}
extension UTF8.CodeUnit : _StringElementType {
internal static func toUTF16CodeUnit(x: UTF8.CodeUnit) -> UTF16.CodeUnit {
internal static func _toUTF16CodeUnit(x: UTF8.CodeUnit) -> UTF16.CodeUnit {
_sanityCheck(x <= 0x7f, "should only be doing this with ASCII")
return UTF16.CodeUnit(x)
}
internal static func fromUTF16CodeUnit(
internal static func _fromUTF16CodeUnit(
utf16: UTF16.CodeUnit
) -> UTF8.CodeUnit {
_sanityCheck(utf16 <= 0x7f, "should only be doing this with ASCII")
return UTF8.CodeUnit(utf16)
}
}
@@ -788,8 +790,8 @@ extension UTF16 {
}
else {
for i in 0..<count {
let u16 = T.toUTF16CodeUnit((source + i).memory)
(destination + i).memory = U.fromUTF16CodeUnit(u16)
let u16 = T._toUTF16CodeUnit((source + i).memory)
(destination + i).memory = U._fromUTF16CodeUnit(u16)
}
}
}