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Rename and overload: F.{fN, pN} ~> F.{func, proc}
Javac doesn't seem to mind.
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1 file changed

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src/test/java/scala/runtime/test/Test.java

Lines changed: 18 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -5,6 +5,8 @@
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import scala.runtime.*;
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import static scala.runtime.test.TestAPI.*;
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import static scala.runtime.F.func;
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import static scala.runtime.F.proc;
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public class Test {
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public static void main(String[] args) {
@@ -40,13 +42,13 @@ public static void main(String[] args) {
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scala.Function1<String, String> f2 = f1;
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// Factory methods in `F` can reduce the verbosity a little:
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// `f1` is actually just an identity method; it only exists to
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// `func` is actually just an identity method; it only exists to
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// trigger lambda creation using the `F1` functional interface.
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scala.Function1<String, String> f3 = F.f1((String s) -> s);
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scala.Function1<String, String> f3 = func((String s) -> s);
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// Note that javac's type inference can infer the parameter type here,
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// based on the acribed type of `f4`.
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scala.Function1<String, String> f4 = F.f1(s -> s);
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scala.Function1<String, String> f4 = func(s -> s);
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// f1.apply("");
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@@ -58,37 +60,37 @@ public static void main(String[] args) {
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// as are `curried`, `tupled`, `compose`, `andThen`.
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f3.compose(f3).andThen(f3).apply("");
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scala.Function2<String, String, String> f6 = F.f2((s1, s2) -> join(s1, s2));
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scala.Function2<String, String, String> f6 = func((s1, s2) -> join(s1, s2));
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assert(f6.curried().apply("1").apply("2") == "12");
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// Functions returning unit must use the `P1`, ... functional interfaces
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// in order to convert a void lamdba return to Scala's Unit.
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//
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// The easiest way to do this is via `F.p1`, ....
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// The easiest way to do this is via `F.proc`, ....
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//
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// Note that the lambda has a return type of `void` if the last
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// statement is a call to a `void` returning method, or if it is
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// a `return`.
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scala.Function1<String, BoxedUnit> f7 = F.p1(s -> sideEffect());
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scala.Function1<String, BoxedUnit> f8 = F.p1(s -> {s.toUpperCase(); return;});
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scala.Function1<String, BoxedUnit> f7 = proc(s -> sideEffect());
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scala.Function1<String, BoxedUnit> f8 = proc(s -> {s.toUpperCase(); return;});
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// Function0 is also available
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scala.Function0<String> f9 = F.f0(() -> "42");
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assert(f9.apply() == "42");
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// You can go up to 22 (the highest arity function defined in the Scala standard library.)
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assert(acceptFunction1(F.f1(v1 -> v1.toUpperCase())) == "1");
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acceptFunction1Unit(F.p1(v1 -> sideEffect()));
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acceptFunction1Unit(F.p1(v1 -> {v1.toUpperCase(); return;}));
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assert(acceptFunction1(func(v1 -> v1.toUpperCase())) == "1");
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acceptFunction1Unit(proc(v1 -> sideEffect()));
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acceptFunction1Unit(proc(v1 -> {v1.toUpperCase(); return;}));
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84-
assert(acceptFunction2(F.f2((v1, v2) -> join(v1, v2))) == "12");
85-
acceptFunction2Unit(F.p2((v1, v2) -> {v1.toUpperCase(); return;}));
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assert(acceptFunction2(func((v1, v2) -> join(v1, v2))) == "12");
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acceptFunction2Unit(proc((v1, v2) -> {v1.toUpperCase(); return;}));
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87-
assert(acceptFunction3(F.f3((v1, v2, v3) -> join(v1, v2, v3))) == "123");
88-
acceptFunction3Unit(F.p3((v1, v2, v3) -> {v1.toUpperCase(); return;}));
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assert(acceptFunction3(func((v1, v2, v3) -> join(v1, v2, v3))) == "123");
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acceptFunction3Unit(proc((v1, v2, v3) -> {v1.toUpperCase(); return;}));
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90-
assert(acceptFunction22(F.f22((v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) -> join(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22))) == "12345678910111213141516171819202122");
91-
acceptFunction22Unit( F.p22((v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) -> {v1.toUpperCase(); return;}));
92+
assert(acceptFunction22(func((v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) -> join(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22))) == "12345678910111213141516171819202122");
93+
acceptFunction22Unit( proc((v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) -> {v1.toUpperCase(); return;}));
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}
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private static void sideEffect() {

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