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test/tools/javac/lambda/T8031967.java@e64bb2f5f0cf (annotated)

test/tools/javac/lambda/T8031967.java

Fri, 30 May 2014 12:54:16 +0200

author

jlahoda

date

Fri, 30 May 2014 12:54:16 +0200

changeset 2410

e64bb2f5f0cf

parent 0

959103a6100f

permissions

-rw-r--r--

8031967: For some sources compiler compiles for ever
Summary: Avoid creating DeferredTypes for method calls with method calls as receivers if the site can be determined reliably
Reviewed-by: mcimadamore, vromero
Contributed-by: maurizio.cimadamore@oracle.com, jan.lahoda@oracle.com

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2014, 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 8031967
aoqi@0	27	* @summary Ensure javac can handle very deeply nested chain of method invocations occurring as
aoqi@0	28	* a parameter to other method invocations.
aoqi@0	29	* @run main T8031967
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	import java.io.IOException;
aoqi@0	33	import java.net.URI;
aoqi@0	34	import java.util.Arrays;
aoqi@0	35	import java.util.List;
aoqi@0	36
aoqi@0	37	import javax.tools.DiagnosticListener;
aoqi@0	38	import javax.tools.JavaCompiler;
aoqi@0	39	import javax.tools.JavaFileObject;
aoqi@0	40	import javax.tools.SimpleJavaFileObject;
aoqi@0	41	import javax.tools.ToolProvider;
aoqi@0	42
aoqi@0	43	import com.sun.source.util.JavacTask;
aoqi@0	44
aoqi@0	45	public class T8031967 {
aoqi@0	46
aoqi@0	47	public static void main(String... args) throws IOException {
aoqi@0	48	new T8031967().run();
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	final int depth = 50;
aoqi@0	52
aoqi@0	53	private void run() throws IOException {
aoqi@0	54	runTestCase(true);
aoqi@0	55	runTestCase(false);
aoqi@0	56	}
aoqi@0	57
aoqi@0	58	private void runTestCase(boolean withErrors) throws IOException {
aoqi@0	59	StringBuilder code = new StringBuilder();
aoqi@0	60
aoqi@0	61	code.append("public class Test {\n" +
aoqi@0	62	" private void test() {\n" +
aoqi@0	63	" GroupLayout l = new GroupLayout();\n" +
aoqi@0	64	" l.setHorizontalGroup(\n");
aoqi@0	65
aoqi@0	66	gen(code, depth);
aoqi@0	67	code.append(" );\n" +
aoqi@0	68	" }\n");
aoqi@0	69	if (!withErrors) {
aoqi@0	70	code.append(" class GroupLayout {\n" +
aoqi@0	71	" ParallelGroup createParallelGroup() {return null;}\n" +
aoqi@0	72	" ParallelGroup createParallelGroup(int i) {return null;}\n" +
aoqi@0	73	" ParallelGroup createParallelGroup(int i, int j) {return null;}\n" +
aoqi@0	74	" void setHorizontalGroup(Group g) { }\n" +
aoqi@0	75	" }\n" +
aoqi@0	76	" \n" +
aoqi@0	77	" class Group {\n" +
aoqi@0	78	" Group addGroup(Group g) { return this; }\n" +
aoqi@0	79	" Group addGroup(int i, Group g) { return this; }\n" +
aoqi@0	80	" Group addGap(int i) { return this; }\n" +
aoqi@0	81	" Group addGap(long l) { return this; }\n" +
aoqi@0	82	" Group addGap(int i, int j) { return this; }\n" +
aoqi@0	83	" Group addComponent(Object c) { return this; }\n" +
aoqi@0	84	" Group addComponent(int i, Object c) { return this; }\n" +
aoqi@0	85	" }\n" +
aoqi@0	86	" class ParallelGroup extends Group {\n" +
aoqi@0	87	" Group addGroup(Group g) { return this; }\n" +
aoqi@0	88	" Group addGroup(int i, Group g) { return this; }\n" +
aoqi@0	89	" Group addGap(int i) { return this; }\n" +
aoqi@0	90	" Group addGap(int i, int j) { return this; }\n" +
aoqi@0	91	" Group addComponent(Object c) { return this; }\n" +
aoqi@0	92	" Group addComponent(int i, Object c) { return this; }\n" +
aoqi@0	93	" }\n");
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	code.append("}\n");
aoqi@0	97
aoqi@0	98	JavaSource source = new JavaSource(code.toString());
aoqi@0	99	List<JavaSource> sourceList = Arrays.asList(source);
aoqi@0	100	JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
aoqi@0	101	DiagnosticListener<JavaFileObject> noErrors = (diagnostic) -> {
aoqi@0	102	throw new IllegalStateException("Should not produce errors: " + diagnostic);
aoqi@0	103	};
aoqi@0	104	JavacTask task = (JavacTask) compiler.getTask(null, null, withErrors ? null : noErrors,
aoqi@0	105	null, null, sourceList);
aoqi@0	106
aoqi@0	107	task.analyze();
aoqi@0	108	}
aoqi@0	109
aoqi@0	110	private void gen(StringBuilder code, int depth) {
aoqi@0	111	code.append("l.createParallelGroup()\n");
aoqi@0	112	if (depth > 0) {
aoqi@0	113	code.append(".addGroup(\n");
aoqi@0	114	gen(code, depth - 1);
aoqi@0	115	code.append(")");
aoqi@0	116	}
aoqi@0	117
aoqi@0	118	code.append(".addGap(1)\n" +
aoqi@0	119	".addComponent(new Object())\n" +
aoqi@0	120	".addGap(1)\n" +
aoqi@0	121	".addComponent(new Object())");
aoqi@0	122	}
aoqi@0	123
aoqi@0	124	class JavaSource extends SimpleJavaFileObject {
aoqi@0	125
aoqi@0	126	final String code;
aoqi@0	127	public JavaSource(String code) {
aoqi@0	128	super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0	129	this.code = code;
aoqi@0	130	}
aoqi@0	131
aoqi@0	132	@Override
aoqi@0	133	public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0	134	return code;
aoqi@0	135	}
aoqi@0	136	}
aoqi@0	137	}