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test/tools/javac/processing/model/util/elements/TestGetConstantExpression.java@2eb010b6cb22 (annotated)

test/tools/javac/processing/model/util/elements/TestGetConstantExpression.java

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

author

aoqi

date

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

changeset 2525

2eb010b6cb22

parent 1466

b52a38d4536c

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2009, 2010, 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	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 6471577 6517779
aoqi@0	27	* @summary Test Elements.getConstantExpression
aoqi@0	28	* @author Joseph D. Darcy
aoqi@0	29	* @library /tools/javac/lib
aoqi@0	30	* @build JavacTestingAbstractProcessor TestGetConstantExpression
aoqi@0	31	* @compile -processor TestGetConstantExpression Foo.java
aoqi@0	32	*/
aoqi@0	33
aoqi@0	34	import java.util.Set;
aoqi@0	35	import javax.annotation.processing.*;
aoqi@0	36	import javax.lang.model.SourceVersion;
aoqi@0	37	import static javax.lang.model.SourceVersion.*;
aoqi@0	38	import javax.lang.model.element.*;
aoqi@0	39	import javax.lang.model.util.*;
aoqi@0	40	import static javax.lang.model.util.ElementFilter.*;
aoqi@0	41	import static javax.tools.Diagnostic.Kind.*;
aoqi@0	42	import static javax.tools.StandardLocation.*;
aoqi@0	43	import java.io.*;
aoqi@0	44
aoqi@0	45	/**
aoqi@0	46	* Test basic workings of Elements.getConstantExpression.
aoqi@0	47	*/
aoqi@0	48	public class TestGetConstantExpression extends JavacTestingAbstractProcessor {
aoqi@0	49	private int round = 1;
aoqi@0	50
aoqi@0	51	/**
aoqi@0	52	* Check expected behavior on classes and packages.
aoqi@0	53	*/
aoqi@0	54	public boolean process(Set<? extends TypeElement> annotations,
aoqi@0	55	RoundEnvironment roundEnv) {
aoqi@0	56	int errors = 0;
aoqi@0	57	boolean processingOver = roundEnv.processingOver();
aoqi@0	58
aoqi@0	59	if (!processingOver && round == 1) {
aoqi@0	60	errors += expectIllegalArgumentException(null);
aoqi@0	61	errors += expectIllegalArgumentException(this);
aoqi@0	62
aoqi@0	63	// Generate source code with various constant values and
aoqi@0	64	// make sure it compiles.
aoqi@0	65
aoqi@0	66	try {
aoqi@0	67	PrintWriter pw = new PrintWriter(filer.createSourceFile("ConstantTest").openWriter());
aoqi@0	68	try {
aoqi@0	69	Boolean[] booleans = {true, false};
aoqi@0	70	Byte[] bytes = {Byte.MIN_VALUE, -1, 0, 1, Byte.MAX_VALUE};
aoqi@0	71	Short[] shorts = {Short.MIN_VALUE, -1, 0, 1, Short.MAX_VALUE};
aoqi@0	72	Integer[] ints = {Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE};
aoqi@0	73	Long[] longs = {Long.MIN_VALUE, -1L, 0L,1L, Long.MAX_VALUE};
aoqi@0	74	Character[] chars = {Character.MIN_VALUE, ' ', '\t', 'a', 'b', 'c', '~', Character.MAX_VALUE};
aoqi@0	75	Float[] floats = {Float.NaN, Float.NEGATIVE_INFINITY, -1.0f, -0.0f, 0.0f, 1.0f, Float.POSITIVE_INFINITY};
aoqi@0	76	Double[] doubles = {Double.NaN, Double.NEGATIVE_INFINITY, -1.0, -0.0, 0.0, 1.0, Double.POSITIVE_INFINITY};
aoqi@0	77
aoqi@0	78	pw.println("class ConstantTest {");
aoqi@0	79	pw.println(String.format(" private static boolean[] booleans = {%s};",
aoqi@0	80	printConstants(booleans)));
aoqi@0	81	pw.println(String.format(" private static byte[] bytes = {%s};",
aoqi@0	82	printConstants(bytes)));
aoqi@0	83	pw.println(String.format(" private static short[] shorts = {%s};",
aoqi@0	84	printConstants(shorts)));
aoqi@0	85	pw.println(String.format(" private static int[] ints = {%s};",
aoqi@0	86	printConstants(ints)));
aoqi@0	87	pw.println(String.format(" private static long[] longs = {%s};",
aoqi@0	88	printConstants(longs)));
aoqi@0	89	pw.println(String.format(" private static char[] chars = {%s};",
aoqi@0	90	printConstants(chars)));
aoqi@0	91	pw.println(String.format(" private static float[] floats = {%s};",
aoqi@0	92	printConstants(floats)));
aoqi@0	93	pw.println(String.format(" private static double[] doubles = {%s};",
aoqi@0	94	printConstants(doubles)));
aoqi@0	95	pw.println("}");
aoqi@0	96	} finally {
aoqi@0	97	pw.close();
aoqi@0	98	}
aoqi@0	99	} catch(IOException io) {
aoqi@0	100	throw new RuntimeException(io);
aoqi@0	101	}
aoqi@0	102	round++;
aoqi@0	103	} else if (processingOver) {
aoqi@0	104	if (errors > 0) {
aoqi@0	105	throw new RuntimeException();
aoqi@0	106	}
aoqi@0	107	}
aoqi@0	108	return true;
aoqi@0	109	}
aoqi@0	110
aoqi@0	111	String printConstants(Object[] constants) {
aoqi@0	112	StringBuilder sb = new StringBuilder();
aoqi@0	113
aoqi@0	114	for(Object o : constants) {
aoqi@0	115	sb.append(eltUtils.getConstantExpression(o));
aoqi@0	116	sb.append(", ");
aoqi@0	117	}
aoqi@0	118	return sb.toString();
aoqi@0	119	}
aoqi@0	120
aoqi@0	121	int expectIllegalArgumentException(Object o) {
aoqi@0	122	String s = "";
aoqi@0	123	try {
aoqi@0	124	s = eltUtils.getConstantExpression(o);
aoqi@0	125	System.err.println("Unexpected string returned: " + s);
aoqi@0	126	return 1;
aoqi@0	127	} catch (IllegalArgumentException iae) {
aoqi@0	128	return 0;
aoqi@0	129	}
aoqi@0	130	}
aoqi@0	131	}