russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
38 lines
1.2 KiB
Java
38 lines
1.2 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8003280
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* @summary Add lambda tests
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* check that code generation handles void-compatibility correctly
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* @compile/fail/ref=LambdaConv21.out -XDrawDiagnostics LambdaConv21.java
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*/
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class LambdaConv21 {
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interface SAM_void<X> {
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void m();
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}
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interface SAM_java_lang_Void {
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Void m();
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}
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static void m_void() { }
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static Void m_java_lang_Void() { return null; }
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static void testExpressionLambda() {
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SAM_void s1 = ()->m_void(); //ok
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SAM_java_lang_Void s2 = ()->m_void(); //no - incompatible target
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SAM_void s3 = ()->m_java_lang_Void(); //ok - expression statement lambda is compatible with void
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SAM_java_lang_Void s4 = ()->m_java_lang_Void(); //ok
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}
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static void testStatementLambda() {
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SAM_void s1 = ()-> { m_void(); }; //ok
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SAM_java_lang_Void s2 = ()-> { m_void(); }; //no - missing return value
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SAM_void s3 = ()-> { return m_java_lang_Void(); }; //no - unexpected return value
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SAM_java_lang_Void s4 = ()-> { return m_java_lang_Void(); }; //ok
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SAM_void s5 = ()-> { m_java_lang_Void(); }; //ok
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SAM_java_lang_Void s6 = ()-> { m_java_lang_Void(); }; //no - missing return value
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}
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}
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