github/semantic
1
1
Fork 0
mirror of https://github.com/github/semantic.git synced 2024-11-28 10:15:55 +03:00
Code Issues Projects Releases Wiki Activity

Free.ana rethrows errors.

Browse Source
This commit is contained in:
Rob Rix 2015-10-28 12:07:23 -04:00
parent 33bd0c5644
commit 17987eff80
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
prototype/Doubt/Free.swift
View File

@ -122,8 +122,8 @@ extension Free {
/// Anamorphism over `Free`.
///
/// Unfolds a tree bottom-up by recursively applying `transform` to a series of values starting with `seed`. Since `Syntax.Leaf` does not recur, this will halt when it has produced leaves for every branch.
public static func ana(@noescape unfold: Annotation -> Syntax<Annotation, Leaf>)(_ seed: Annotation) -> Free {
return Roll(seed, unfold(seed).map(ana(unfold)))
public static func ana(@noescape unfold: Annotation throws -> Syntax<Annotation, Leaf>)(_ seed: Annotation) rethrows -> Free {
return try Roll(seed, unfold(seed).map { try ana(unfold)($0) })
}
}