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stdlib: adopt @warn_unused_result

Browse Source 
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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7
stdlib/public/core/IntegerArithmetic.swift.gyb
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@@ -41,11 +41,13 @@ public protocol IntegerArithmeticType : _IntegerArithmeticType, Comparable {
% for name,op,Action,result in integerBinaryOps:
/// ${Action} `lhs` and `rhs`, returning ${result} and trapping in case of
/// arithmetic overflow (except in -Ounchecked builds).
@warn_unused_result
func ${op} (lhs: Self, rhs: Self) -> Self
% end
/// Explicitly convert to `IntMax`, trapping on overflow (except in
/// -Ounchecked builds).
@warn_unused_result
func toIntMax() -> IntMax
}
@@ -53,6 +55,7 @@ public protocol IntegerArithmeticType : _IntegerArithmeticType, Comparable {
/// ${Action} `lhs` and `rhs`, returning ${result} and trapping in case of
/// arithmetic overflow (except in -Ounchecked builds).
@transparent
@warn_unused_result
public func ${op} <T : _IntegerArithmeticType>(lhs: T, rhs: T) -> T {
return _overflowChecked(T.${name}WithOverflow(lhs, rhs))
}
@@ -60,6 +63,7 @@ public func ${op} <T : _IntegerArithmeticType>(lhs: T, rhs: T) -> T {
% if (op != '/') and (op != '%'):
/// ${name} `lhs` and `rhs`, silently discarding any overflow.
@transparent
@warn_unused_result
public func &${op} <T : _IntegerArithmeticType>(lhs: T, rhs: T) -> T {
return T.${name}WithOverflow(lhs, rhs).0
}
@@ -89,9 +93,11 @@ public func ${op}= <T : _IntegerArithmeticType>(inout lhs: T, rhs: T) {
/// - `-(-x) == x`
public protocol SignedNumberType : Comparable, IntegerLiteralConvertible {
/// Return the result of negating `x`.
@warn_unused_result
prefix func - (x: Self) -> Self
/// Return the difference between `lhs` and `rhs`.
@warn_unused_result
func - (lhs: Self, rhs: Self) -> Self
// Do not use this operator directly; call abs(x) instead
@@ -128,6 +134,7 @@ public func ~> <T : SignedNumberType>(x:T,_:(_Abs, ())) -> T {
/// A type that supports an "absolute value" function.
public protocol AbsoluteValuable : SignedNumberType {
/// Returns the absolute value of `x`.
@warn_unused_result
static func abs(x: Self) -> Self
}