Added conversion from lambdas with exceptions to Java 8 base function types

Mark Perry · Mark Perry · commit 7993ede4e930 · 2014-06-03T12:00:13.000+10:00
diff --git a/java8/src/main/java/fj/data/Java8.java b/java8/src/main/java/fj/data/Java8.java
@@ -1,8 +1,6 @@
 package fj.data;
 
-import fj.F;
-import fj.F2;
-import fj.P1;
+import fj.*;
 
 import java.util.function.BiFunction;
 import java.util.function.Function;
@@ -29,7 +27,7 @@ public static <A, B> F<A, B> toF(Function<A, B> f) {
         return a -> f.apply(a);
     }
 
-    public static <A, B> F<A, B> toFunction(F<A, B> f) {
+    public static <A, B> Function<A, B> toFunction(F<A, B> f) {
         return a -> f.f(a);
     }
 
@@ -41,4 +39,16 @@ public static <A, B, C> BiFunction<A, B, C> toBiFunction(F2<A, B, C> f) {
         return (a, b) -> f.f(a, b);
     }
 
+    static public <A> Supplier<Validation<Exception, A>> toSupplier(final TryCatch0<A> t) {
+        return toSupplier(P1Functions.toP1(t));
+    }
+
+    static public <A, B> Function<A, Validation<Exception, B>> toFunction(final TryCatch1<A, B> t) {
+        return toFunction(F1Functions.toF1(t));
+    }
+
+    static public <A, B, C> BiFunction<A, B, Validation<Exception, C>> toBiFunction(final TryCatch2<A, B, C> t) {
+        return toBiFunction(F2Functions.toF2(t));
+    }
+
 }
