HTTPRouteParameterValue

Author: swhitty

FlyingFox/Sources/HTTPRequest+RouteParameter.swift

@@ -55,4 +55,12 @@ public extension Array where Element == HTTPRequest.RouteParameter {
             first { $0.name == name }?.value
         }
     }
+
+    subscript<T: HTTPRouteParameterValue>(_ name: String, of type: T.Type = T.self) -> T? {
+        guard let text = first(where: { $0.name == name })?.value,
+              let value = try? T(parameter: text) else {
+            return nil
+        }
+        return value
+    }
 }

FlyingFox/Tests/HTTPRouteTests.swift

@@ -500,6 +500,26 @@ final class HTTPRouteTests: XCTestCase {
         )
     }
 
+    func testRouteParameterValuesA() {
+        let route = HTTPRoute("GET /:foo/:bar")
+        enum Beast: String, HTTPRouteParameterValue {
+            case fish
+        }
+
+        XCTAssertEqual(
+            route.extractParameters(from: .make("/10/fish"))["foo"],
+            10
+        )
+        XCTAssertEqual(
+            route.extractParameters(from: .make("/20/fish"))["bar"],
+            "fish"
+        )
+        XCTAssertEqual(
+            route.extractParameters(from: .make("/20/fish"))["bar"],
+            Beast.fish
+        )
+    }
+
 #if compiler(>=5.9)
     func testPathParameters() {
         // given