Merge pull request #4 from mattpolzin/type-erased-accessor

Add some code doc, add an accessor that gets a type-erased value
mattpolzin · Nov 5, 2019 · 18cd995 · 18cd995
2 parents b24fd3b + c4fdbe0
commit 18cd995
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Showing 6 changed files with 538 additions and 14 deletions.
diff --git a/Poly.podspec b/Poly.podspec
@@ -16,7 +16,7 @@ Pod::Spec.new do |spec|
   #
 
   spec.name         = "Poly"
-  spec.version      = "2.2.0"
+  spec.version      = "2.3.0"
   spec.summary      = "A general-purpose library to help represent situations where the type of a value is one of a set of types."
 
   # This description is used to generate tags and improve search results.

diff --git a/README.md b/README.md
@@ -67,6 +67,10 @@ switch animal {
     print(rat)
 }
 ```
+Or access a type-erased value:
+```swift
+let someAnimal: Any = animal.value 
+```
 
 You might consider making a typealias to make your life easier:
 ```swift

diff --git a/Sources/Poly/Poly+Codable.swift b/Sources/Poly/Poly+Codable.swift
@@ -20,7 +20,7 @@ public struct PolyDecodeNoTypesMatchedError: Swift.Error, CustomDebugStringConve
     public var debugDescription: String {
         let codingPathString = codingPath
             .map { $0.intValue.map(String.init) ?? $0.stringValue }
-        .joined(separator: "/")
+            .joined(separator: "/")
 
         let failureStrings = individualTypeFailures.map {
             let type = $0.type
@@ -47,10 +47,17 @@ private func decode<Thing: Decodable>(_ type: Thing.Type, from container: Single
 	} catch (let err as DecodingError) {
 		ret = .failure(PolyTypeNotFound(type: type, error: err))
 	} catch (let err) {
-        ret = .failure(PolyTypeNotFound(type: type, error: DecodingError.typeMismatch(Thing.self,
-                                                                                      .init(codingPath: container.codingPath,
-                                                                                            debugDescription: String(describing: err),
-                                                                                            underlyingError: err))))
+        ret = .failure(PolyTypeNotFound(
+            type: type,
+            error: DecodingError.typeMismatch(
+                Thing.self,
+                .init(
+                    codingPath: container.codingPath,
+                    debugDescription: String(describing: err),
+                    underlyingError: err
+                )
+            )
+        ))
 	}
 	return ret
 }