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Rename Doc to Layout.

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This commit is contained in:
Rob Rix 2015-09-28 22:28:37 -04:00
parent c6cedbc751
commit f42dc8dafe
2 changed files with 13 additions and 13 deletions
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24
prototype/Doubt/Doc.swift
View File

@ -1,24 +1,24 @@
public enum Doc: CustomStringConvertible, Equatable {
public enum Layout: CustomStringConvertible, Equatable {
case Empty
indirect case Text(String, Doc)
indirect case Line(Int, Doc)
indirect case Text(String, Layout)
indirect case Line(Int, Layout)
public init(width: Int, placed: Int, alternatives: Stream<(Int, DOC)>) {
switch alternatives {
case .Nil:
self = .Empty
case let .Cons((_, .Empty), rest):
self = Doc(width: width, placed: placed, alternatives: rest.value)
self = Layout(width: width, placed: placed, alternatives: rest.value)
case let .Cons((i, .Concat(x, y)), rest):
self = Doc(width: width, placed: placed, alternatives: .Cons((i, x), Memo(evaluated: .Cons((i, y), rest))))
self = Layout(width: width, placed: placed, alternatives: .Cons((i, x), Memo(evaluated: .Cons((i, y), rest))))
case let .Cons((i, .Nest(j, x)), rest):
self = Doc(width: width, placed: placed, alternatives: .Cons((i + j, x), rest))
self = Layout(width: width, placed: placed, alternatives: .Cons((i + j, x), rest))
case let .Cons((_, .Text(s)), rest):
self = .Text(s, Doc(width: width, placed: placed + Int(s.characters.count), alternatives: rest.value))
self = .Text(s, Layout(width: width, placed: placed + Int(s.characters.count), alternatives: rest.value))
case let .Cons((i, .Line), rest):
self = .Line(i, Doc(width: width, placed: i, alternatives: rest.value))
self = .Line(i, Layout(width: width, placed: i, alternatives: rest.value))
case let .Cons((i, .Union(x, y)), z):
self = .better(width, placed, Doc(width: width, placed: placed, alternatives: .Cons((i, x), z)), Doc(width: width, placed: placed, alternatives: .Cons((i, y), z)))
self = .better(width, placed, Layout(width: width, placed: placed, alternatives: .Cons((i, x), z)), Layout(width: width, placed: placed, alternatives: .Cons((i, y), z)))
}
}
@ -43,7 +43,7 @@ public enum Doc: CustomStringConvertible, Equatable {
}
}
public static func better(width: Int, _ placed: Int, _ x: Doc, _ y: Doc) -> Doc {
public static func better(width: Int, _ placed: Int, _ x: Layout, _ y: Layout) -> Layout {
return x.fits(width - placed) ? x : y
}
}
@ -115,8 +115,8 @@ public enum DOC {
return best(width).description
}
public func best(width: Int, placed: Int = 0) -> Doc {
return Doc(width: width, placed: placed, alternatives: .pure((0, self)))
public func best(width: Int, placed: Int = 0) -> Layout {
return Layout(width: width, placed: placed, alternatives: .pure((0, self)))
}
}

2
prototype/Doubt/Equatable.swift
View File

@ -42,7 +42,7 @@ public func == (left: Diff, right: Diff) -> Bool {
}
}
public func == (left: Doc, right: Doc) -> Bool {
public func == (left: Layout, right: Layout) -> Bool {
switch (left, right) {
case (.Empty, .Empty):
return true