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stdlib: adopt @warn_unused_result

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rdar://20957486

Swift SVN r31048
This commit is contained in:
Dmitri Hrybenko
2015-08-06 14:53:18 +00:00
parent 10bdef0936
commit dd3194a18c
74 changed files with 789 additions and 82 deletions
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9
stdlib/public/core/StringUnicodeScalarView.swift
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@@ -10,6 +10,7 @@
//
//===----------------------------------------------------------------------===//
@warn_unused_result
public func ==(
lhs: String.UnicodeScalarView.Index,
rhs: String.UnicodeScalarView.Index
@@ -17,6 +18,7 @@ public func ==(
return lhs._position == rhs._position
}
@warn_unused_result
public func <(
lhs: String.UnicodeScalarView.Index,
rhs: String.UnicodeScalarView.Index
@@ -58,6 +60,7 @@ extension String {
/// Returns the next consecutive value after `self`.
///
/// - Requires: The next value is representable.
@warn_unused_result
public func successor() -> Index {
var scratch = _ScratchGenerator(_core, _position)
var decoder = UTF16()
@@ -68,6 +71,7 @@ extension String {
/// Returns the previous consecutive value before `self`.
///
/// - Requires: The previous value is representable.
@warn_unused_result
public func predecessor() -> Index {
var i = _position
let codeUnit = _core[--i]
@@ -201,11 +205,13 @@ extension String {
/// this *sequence*.
///
/// - Complexity: O(1).
@warn_unused_result
public func generate() -> Generator {
return Generator(_core)
}
/// Returns a mirror that reflects `self`.
@warn_unused_result
public func _getMirror() -> _MirrorType {
return _UnicodeScalarViewMirror(self)
}
@@ -357,6 +363,7 @@ extension String.UnicodeScalarIndex {
/// to `self`.
///
/// - Requires: `self` is an element of `String(utf8)!.indices`.
@warn_unused_result
public func samePositionIn(utf8: String.UTF8View) -> String.UTF8View.Index {
return String.UTF8View.Index(self, within: utf8)
}
@@ -365,6 +372,7 @@ extension String.UnicodeScalarIndex {
/// to `self`.
///
/// - Requires: `self` is an element of `String(utf16)!.indices`.
@warn_unused_result
public func samePositionIn(
utf16: String.UTF16View
) -> String.UTF16View.Index {
@@ -375,6 +383,7 @@ extension String.UnicodeScalarIndex {
/// to `self`, or if no such position exists, `nil`.
///
/// - Requires: `self` is an element of `characters.unicodeScalars.indices`.
@warn_unused_result
public func samePositionIn(characters: String) -> String.Index? {
return String.Index(self, within: characters)
}