1 /* 2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test /nodynamiccopyright/ 26 * @compile/fail/ref=TestMethodCall.out -XDrawDiagnostics TestMethodCall.java 27 */ 28 29 import java.lang.reflect.code.Quoted; 30 31 public class TestMethodCall { 32 void test(boolean cond) { 33 apply(() -> {}); 34 apply((int i) -> ""); // ok (int->String) 35 apply((int i) -> { return ""; }); // ok (int->String) 36 apply((int i) -> { }); // ok (int->V) 37 apply((int i) -> { return; }); // ok (int->V) 38 apply((int i) -> { if (cond) return; else return; }); // ok (int->V) 39 apply((int i) -> { if (cond) return "1"; else return "2"; }); // ok (int->String) 40 } 41 42 void testImplicit(boolean cond) { 43 apply((i) -> ""); // error - no parameter types 44 apply((i) -> { return ""; }); // error - no parameter types 45 apply((i) -> { }); // error - no parameter types 46 apply((i) -> { return; }); // error - no parameter types 47 apply((i) -> { if (cond) return; else return; }); // error - no parameter types 48 apply((i) -> { if (cond) return "1"; else return "2"; }); // error - no parameter types 49 } 50 51 void testImplicitVar(boolean cond) { 52 apply((var i) -> ""); // error - no parameter types 53 apply((var i) -> { return ""; }); // error - no parameter types 54 apply((var i) -> { }); // error - no parameter types 55 apply((var i) -> { return; }); // error - no parameter types 56 apply((var i) -> { if (cond) return; else return; }); // error - no parameter types 57 apply((var i) -> { if (cond) return "1"; else return "2"; }); // error - no parameter types 58 } 59 60 void testBadInferredReturn(boolean cond) { 61 apply((int i) -> { if (cond) return; else return ""; }); // error - only one branch returns 62 apply((int i) -> { if (cond) { return "2"; } }); // error - one return, but body completes normally 63 } 64 65 void apply(Quoted quoted) { } 66 }