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Patch.sum/difference are not allowed to throw.

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This commit is contained in:
Rob Rix 2015-11-12 17:43:32 -05:00
parent 3f81b9d8b9
commit 8cf0ef097c
1 changed files with 6 additions and 6 deletions
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12
prototype/Doubt/Patch.swift
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@ -73,20 +73,20 @@ extension Patch {
extension Patch {
/// Returns a function which computes the size of a `patch` as the sum of the sizes of its terms, as computed by `size`.
public static func sum(@noescape size: A throws -> Int)(_ patch: Patch) rethrows -> Int {
public static func sum(@noescape size: A -> Int)(_ patch: Patch) -> Int {
switch patch {
case let .Replace(a, b):
return try size(a) + size(b)
return size(a) + size(b)
case let .Insert(b):
return try size(b)
return size(b)
case let .Delete(a):
return try size(a)
return size(a)
}
}
/// Returns a function which computes the size of a `patch` as the absolute difference of the sizes of its terms, as computed by `size`.
public static func difference(@noescape size: A throws -> Int)(_ patch: Patch) rethrows -> Int {
return try abs((patch.state.before.map(size) ?? 0) - (patch.state.after.map(size) ?? 0))
public static func difference(@noescape size: A -> Int)(_ patch: Patch) -> Int {
return abs((patch.state.before.map(size) ?? 0) - (patch.state.after.map(size) ?? 0))
}
}