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test/tools/javac/lambda/LambdaConv21.java@2eb010b6cb22 (annotated)

test/tools/javac/lambda/LambdaConv21.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 1433

4f9853659bf1

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* @test /nodynamiccopyright/
aoqi@0	3	* @bug 8003280
aoqi@0	4	* @summary Add lambda tests
aoqi@0	5	* check that code generation handles void-compatibility correctly
aoqi@0	6	* @compile/fail/ref=LambdaConv21.out -XDrawDiagnostics LambdaConv21.java
aoqi@0	7	*/
aoqi@0	8
aoqi@0	9	class LambdaConv21 {
aoqi@0	10
aoqi@0	11	interface SAM_void<X> {
aoqi@0	12	void m();
aoqi@0	13	}
aoqi@0	14
aoqi@0	15	interface SAM_java_lang_Void {
aoqi@0	16	Void m();
aoqi@0	17	}
aoqi@0	18
aoqi@0	19	static void m_void() { }
aoqi@0	20
aoqi@0	21	static Void m_java_lang_Void() { return null; }
aoqi@0	22
aoqi@0	23	static void testExpressionLambda() {
aoqi@0	24	SAM_void s1 = ()->m_void(); //ok
aoqi@0	25	SAM_java_lang_Void s2 = ()->m_void(); //no - incompatible target
aoqi@0	26	SAM_void s3 = ()->m_java_lang_Void(); //ok - expression statement lambda is compatible with void
aoqi@0	27	SAM_java_lang_Void s4 = ()->m_java_lang_Void(); //ok
aoqi@0	28	}
aoqi@0	29
aoqi@0	30	static void testStatementLambda() {
aoqi@0	31	SAM_void s1 = ()-> { m_void(); }; //ok
aoqi@0	32	SAM_java_lang_Void s2 = ()-> { m_void(); }; //no - missing return value
aoqi@0	33	SAM_void s3 = ()-> { return m_java_lang_Void(); }; //no - unexpected return value
aoqi@0	34	SAM_java_lang_Void s4 = ()-> { return m_java_lang_Void(); }; //ok
aoqi@0	35	SAM_void s5 = ()-> { m_java_lang_Void(); }; //ok
aoqi@0	36	SAM_java_lang_Void s6 = ()-> { m_java_lang_Void(); }; //no - missing return value
aoqi@0	37	}
aoqi@0	38	}