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test/tools/javap/typeAnnotations/TypeCasts.java@959103a6100f (annotated)

test/tools/javap/typeAnnotations/TypeCasts.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	import java.io.*;
aoqi@0	25	import com.sun.tools.classfile.*;
aoqi@0	26
aoqi@0	27	/*
aoqi@0	28	* @test
aoqi@0	29	* @bug 6843077
aoqi@0	30	* @summary test that typecasts annotation are emitted if only the cast
aoqi@0	31	* expression is optimized away
aoqi@0	32	*/
aoqi@0	33
aoqi@0	34	public class TypeCasts {
aoqi@0	35	public static void main(String[] args) throws Exception {
aoqi@0	36	new TypeCasts().run();
aoqi@0	37	}
aoqi@0	38
aoqi@0	39	public void run() throws Exception {
aoqi@0	40	File javaFile = writeTestFile();
aoqi@0	41	File classFile = compileTestFile(javaFile);
aoqi@0	42
aoqi@0	43	ClassFile cf = ClassFile.read(classFile);
aoqi@0	44	for (Method m: cf.methods) {
aoqi@0	45	test(cf, m);
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	countAnnotations();
aoqi@0	49
aoqi@0	50	if (errors > 0)
aoqi@0	51	throw new Exception(errors + " errors found");
aoqi@0	52	System.out.println("PASSED");
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	void test(ClassFile cf, Method m) {
aoqi@0	56	test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
aoqi@0	57	test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
aoqi@0	58	}
aoqi@0	59
aoqi@0	60
aoqi@0	61	// test the result of Attributes.getIndex according to expectations
aoqi@0	62	// encoded in the method's name
aoqi@0	63	void test(ClassFile cf, Method m, String name, boolean visible) {
aoqi@0	64	Attribute attr = null;
aoqi@0	65	Code_attribute cAttr = null;
aoqi@0	66
aoqi@0	67	int index = m.attributes.getIndex(cf.constant_pool, Attribute.Code);
aoqi@0	68	if(index!= -1) {
aoqi@0	69	attr = m.attributes.get(index);
aoqi@0	70	assert attr instanceof Code_attribute;
aoqi@0	71	cAttr = (Code_attribute)attr;
aoqi@0	72	index = cAttr.attributes.getIndex(cf.constant_pool, name);
aoqi@0	73	if(index!= -1) {
aoqi@0	74	attr = cAttr.attributes.get(index);
aoqi@0	75	assert attr instanceof RuntimeTypeAnnotations_attribute;
aoqi@0	76	RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
aoqi@0	77	all += tAttr.annotations.length;
aoqi@0	78	if (visible)
aoqi@0	79	visibles += tAttr.annotations.length;
aoqi@0	80	else
aoqi@0	81	invisibles += tAttr.annotations.length;
aoqi@0	82	}
aoqi@0	83	}
aoqi@0	84	}
aoqi@0	85
aoqi@0	86
aoqi@0	87
aoqi@0	88	File writeTestFile() throws IOException {
aoqi@0	89	File f = new File("Test.java");
aoqi@0	90	PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
aoqi@0	91	out.println("import java.lang.annotation.*;");
aoqi@0	92	out.println("class Test { ");
aoqi@0	93	out.println(" @Target(ElementType.TYPE_USE) @interface A { }");
aoqi@0	94
aoqi@0	95	out.println(" void emit() {");
aoqi@0	96	out.println(" Object o = null;");
aoqi@0	97	out.println(" String s = null;");
aoqi@0	98
aoqi@0	99	out.println(" String a0 = (@A String)o;");
aoqi@0	100	out.println(" Object a1 = (@A Object)o;");
aoqi@0	101
aoqi@0	102	out.println(" String b0 = (@A String)s;");
aoqi@0	103	out.println(" Object b1 = (@A Object)s;");
aoqi@0	104	out.println(" }");
aoqi@0	105
aoqi@0	106	out.println(" void alldeadcode() {");
aoqi@0	107	out.println(" Object o = null;");
aoqi@0	108
aoqi@0	109	out.println(" if (false) {");
aoqi@0	110	out.println(" String a0 = (@A String)o;");
aoqi@0	111	out.println(" }");
aoqi@0	112	out.println(" }");
aoqi@0	113
aoqi@0	114	out.println("}");
aoqi@0	115	out.close();
aoqi@0	116	return f;
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	File compileTestFile(File f) {
aoqi@0	120	int rc = com.sun.tools.javac.Main.compile(new String[] { "-source", "1.8", "-g", f.getPath() });
aoqi@0	121	if (rc != 0)
aoqi@0	122	throw new Error("compilation failed. rc=" + rc);
aoqi@0	123	String path = f.getPath();
aoqi@0	124	return new File(path.substring(0, path.length() - 5) + ".class");
aoqi@0	125	}
aoqi@0	126
aoqi@0	127	void countAnnotations() {
aoqi@0	128	int expected_visibles = 0, expected_invisibles = 4;
aoqi@0	129	int expected_all = expected_visibles + expected_invisibles;
aoqi@0	130
aoqi@0	131	if (expected_all != all) {
aoqi@0	132	errors++;
aoqi@0	133	System.err.println("expected " + expected_all
aoqi@0	134	+ " annotations but found " + all);
aoqi@0	135	}
aoqi@0	136
aoqi@0	137	if (expected_visibles != visibles) {
aoqi@0	138	errors++;
aoqi@0	139	System.err.println("expected " + expected_visibles
aoqi@0	140	+ " visibles annotations but found " + visibles);
aoqi@0	141	}
aoqi@0	142
aoqi@0	143	if (expected_invisibles != invisibles) {
aoqi@0	144	errors++;
aoqi@0	145	System.err.println("expected " + expected_invisibles
aoqi@0	146	+ " invisibles annotations but found " + invisibles);
aoqi@0	147	}
aoqi@0	148
aoqi@0	149	}
aoqi@0	150
aoqi@0	151	int errors;
aoqi@0	152	int all;
aoqi@0	153	int visibles;
aoqi@0	154	int invisibles;
aoqi@0	155	}