Add conformance for Combine’s TopLevelDecoder & TopLevelEncoder when …

…it’s available
outfoxx · May 16, 2021 · e3a1600 · e3a1600
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diff --git a/README.md b/README.md
@@ -93,6 +93,11 @@ func decode<T: Decodable>(_ type: T.Type, from data: String) throws -> T
 func decodeIfPresent<T: Decodable>(_ type: T.Type, from data: String) throws -> T?
 ```
 
+##### Combine
+
+When used on Apple platforms where the Combine framework is available, all the encoders conform to Combine's
+`TopLevelEncoder` and all decoders conform to its `TopLevelDecoder`.
+
 ### Polymorphic Encoding/Decoding
 
 `Codable` encoders and decoders are a great tool and very convenient. Unfortunately using them with polymorphic types is cumbersome,

diff --git a/Sources/PotentASN1/ASN1Decoder.swift b/Sources/PotentASN1/ASN1Decoder.swift
@@ -679,3 +679,14 @@ extension SchemaState {
   }
 
 }
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension ASN1Decoder : TopLevelDecoder {
+  public typealias Input = Data
+}
+
+#endif
diff --git a/Sources/PotentASN1/ASN1Encoder.swift b/Sources/PotentASN1/ASN1Encoder.swift
@@ -565,3 +565,14 @@ extension SchemaState {
   }
 
 }
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension ASN1Encoder : TopLevelEncoder {
+  public typealias Output = Data
+}
+
+#endif
diff --git a/Sources/PotentCBOR/CBORDecoder.swift b/Sources/PotentCBOR/CBORDecoder.swift
@@ -383,3 +383,14 @@ private let _iso8601Formatter: DateFormatter = {
   formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
   return formatter
 }()
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension CBORDecoder : TopLevelDecoder {
+  public typealias Input = Data
+}
+
+#endif
diff --git a/Sources/PotentCBOR/CBOREncoder.swift b/Sources/PotentCBOR/CBOREncoder.swift
@@ -119,3 +119,14 @@ private let _iso8601Formatter: DateFormatter = {
   formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
   return formatter
 }()
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension CBOREncoder : TopLevelEncoder {
+  public typealias Output = Data
+}
+
+#endif
diff --git a/Sources/PotentCodables/AnyValue/AnyValueDecoder.swift b/Sources/PotentCodables/AnyValue/AnyValueDecoder.swift
@@ -155,3 +155,18 @@ public struct AnyValueDecoderTransform: InternalDecoderTransform {
   }
 
 }
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension AnyValueDecoder : TopLevelDecoder {
+  public typealias Input = AnyValue
+
+  public func decode<T>(_ type: T.Type, from tree: AnyValue) throws -> T where T : Decodable {
+    return try decodeTree(type, from: tree)
+  }
+}
+
+#endif
diff --git a/Sources/PotentCodables/AnyValue/AnyValueEncoder.swift b/Sources/PotentCodables/AnyValue/AnyValueEncoder.swift
@@ -148,3 +148,18 @@ public struct AnyValueEncoderTransform: InternalEncoderTransform {
   }
 
 }
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension AnyValueEncoder : TopLevelEncoder {
+  public typealias Output = AnyValue
+
+  public func encode<T>(_ value: T) throws -> AnyValue where T : Encodable {
+    return try encodeTree(value)
+  }
+}
+
+#endif
diff --git a/Sources/PotentJSON/JSONDecoder.swift b/Sources/PotentJSON/JSONDecoder.swift
@@ -359,3 +359,14 @@ private let _iso8601Formatter: DateFormatter = {
   formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
   return formatter
 }()
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension JSONDecoder : TopLevelDecoder {
+  public typealias Input = Data
+}
+
+#endif
diff --git a/Sources/PotentJSON/JSONEncoder.swift b/Sources/PotentJSON/JSONEncoder.swift
@@ -297,3 +297,14 @@ private let _iso8601Formatter: DateFormatter = {
   formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
   return formatter
 }()
+
+
+#if canImport(Combine)
+
+import Combine
+
+extension JSONEncoder : TopLevelEncoder {
+  public typealias Output = Data
+}
+
+#endif