Added conversion from io to P1 and TryCatch0

mperry · mperry · commit e128256f6f0c · 2014-08-07T11:10:06.000+10:00
diff --git a/core/src/main/java/fj/Try.java b/core/src/main/java/fj/Try.java
@@ -1,7 +1,11 @@
 package fj;
 
+import fj.data.IO;
+import fj.data.IOFunctions;
 import fj.data.Validation;
 
+import java.io.IOException;
+
 /**
  * Created by mperry on 24/07/2014.
  */
@@ -43,4 +47,8 @@ public static <A, B, C, D, E, Z extends Exception> F4<A, B, C, D, Validation<Z,
         return F8Functions.toF8(t);
     }
 
+    public static <A> IO<A> io(TryCatch0<A, ? extends IOException> t) {
+        return IOFunctions.io(t);
+    }
+
 }
diff --git a/core/src/main/java/fj/data/IOFunctions.java b/core/src/main/java/fj/data/IOFunctions.java
@@ -30,7 +30,23 @@ public class IOFunctions {
   
   private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
 
-  public static final F<Reader, IO<Unit>> closeReader =
+    public static <A> TryCatch0<A, IOException> toTry(IO<A> io) {
+        return () -> io.run();
+    }
+
+    public static <A> P1<Validation<IOException, A>> p(IO<A> io) {
+        return Try.f(toTry(io));
+    }
+
+    public static <A> IO<A> io(P1<A> p) {
+        return () -> p._1();
+    }
+
+    public static <A> IO<A> io(TryCatch0<A, ? extends IOException> t) {
+        return () -> t.f();
+    }
+
+    public static final F<Reader, IO<Unit>> closeReader =
     new F<Reader, IO<Unit>>() {
       @Override
       public IO<Unit> f(final Reader r) {
