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AnyHashable.

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This commit is contained in:
Rob Rix 2015-10-01 09:59:26 -04:00
parent 18d74a9d9c
commit a2a55531c9
2 changed files with 21 additions and 0 deletions
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4
prototype/Doubt.xcodeproj/project.pbxproj
View File

@ -21,6 +21,7 @@
D4413FF11BB08FDC00E3C3C1 /* JSON.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4413FF01BB08FDC00E3C3C1 /* JSON.swift */; };
D45A36C91BBC667D00BE3DDE /* Category.swift in Sources */ = {isa = PBXBuildFile; fileRef = D45A36C81BBC667D00BE3DDE /* Category.swift */; settings = {ASSET_TAGS = (); }; };
D45A36CD1BBC75DF00BE3DDE /* Info.swift in Sources */ = {isa = PBXBuildFile; fileRef = D45A36CC1BBC75DF00BE3DDE /* Info.swift */; settings = {ASSET_TAGS = (); }; };
D49C2CA41BBD72E300949127 /* AnyHashable.swift in Sources */ = {isa = PBXBuildFile; fileRef = D49C2CA31BBD72E300949127 /* AnyHashable.swift */; settings = {ASSET_TAGS = (); }; };
D4A71DC51BB45B850051416D /* Vertex.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4A71DC41BB45B850051416D /* Vertex.swift */; settings = {ASSET_TAGS = (); }; };
D4A71DC71BB4AC9E0051416D /* VertexTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4A71DC61BB4AC9E0051416D /* VertexTests.swift */; settings = {ASSET_TAGS = (); }; };
D4AAE50E1B5AE22E004E581F /* Doubt.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D4AAE4FD1B5AE22E004E581F /* Doubt.framework */; };
@ -98,6 +99,7 @@
D4413FF01BB08FDC00E3C3C1 /* JSON.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = JSON.swift; sourceTree = "<group>"; };
D45A36C81BBC667D00BE3DDE /* Category.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Category.swift; sourceTree = "<group>"; };
D45A36CC1BBC75DF00BE3DDE /* Info.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Info.swift; sourceTree = "<group>"; };
D49C2CA31BBD72E300949127 /* AnyHashable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AnyHashable.swift; sourceTree = "<group>"; };
D4A71DC41BB45B850051416D /* Vertex.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Vertex.swift; sourceTree = "<group>"; };
D4A71DC61BB4AC9E0051416D /* VertexTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VertexTests.swift; sourceTree = "<group>"; };
D4AAE4FD1B5AE22E004E581F /* Doubt.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Doubt.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@ -205,6 +207,7 @@
D4D7F3161BBB22E500AAB0C0 /* Hash.swift */,
D45A36C81BBC667D00BE3DDE /* Category.swift */,
D45A36CC1BBC75DF00BE3DDE /* Info.swift */,
D49C2CA31BBD72E300949127 /* AnyHashable.swift */,
D4AAE5001B5AE22E004E581F /* Supporting Files */,
);
path = Doubt;
@ -392,6 +395,7 @@
D4AAE54A1B5AE2D0004E581F /* Syntax.swift in Sources */,
D432D4731BA9C55300F3FABC /* Stream.swift in Sources */,
D4AAE5421B5AE2D0004E581F /* Doc.swift in Sources */,
D49C2CA41BBD72E300949127 /* AnyHashable.swift in Sources */,
D432D4771BA9FE6A00F3FABC /* Comparable.swift in Sources */,
D45A36CD1BBC75DF00BE3DDE /* Info.swift in Sources */,
D4AAE5461B5AE2D0004E581F /* Parse.swift in Sources */,

17
prototype/Doubt/AnyHashable.swift Normal file
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@ -0,0 +1,17 @@
public enum AnyHashable<A>: Hashable {
case External(A, (A, A) -> Bool, A -> Int)
public var hashValue: Int {
switch self {
case let .External(a, _, hash):
return hash(a)
}
}
}
public func == <A> (left: AnyHashable<A>, right: AnyHashable<A>) -> Bool {
switch (left, right) {
case let (.External(a, eq, _), .External(b, _, _)):
return eq(a, b)
}
}