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test/tools/javac/tree/TestToString.java@ca49d50318dc (annotated)

test/tools/javac/tree/TestToString.java

Tue, 08 Nov 2011 11:51:05 -0800

author

jjg

date

Tue, 08 Nov 2011 11:51:05 -0800

changeset 1127

ca49d50318dc

parent 0

959103a6100f

permissions

-rw-r--r--

6921494: provide way to print javac tree tag values
Reviewed-by: jjg, mcimadamore
Contributed-by: vicenterz@yahoo.es

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2011, 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 7080267
aoqi@0	27	* @summary Call to toString() from an ExpressionStatementTree doesn't take in
aoqi@0	28	* consideration the ";" at the end
aoqi@0	29	*/
aoqi@0	30
aoqi@0	31	import com.sun.source.tree.BlockTree;
aoqi@0	32	import com.sun.source.tree.CompilationUnitTree;
aoqi@0	33	import com.sun.source.tree.StatementTree;
aoqi@0	34	import com.sun.source.tree.Tree;
aoqi@0	35	import java.io.IOException;
aoqi@0	36	import java.net.URI;
aoqi@0	37	import java.util.Arrays;
aoqi@0	38	import java.util.Collections;
aoqi@0	39	import java.util.List;
aoqi@0	40	import javax.tools.JavaFileObject;
aoqi@0	41	import javax.tools.SimpleJavaFileObject;
aoqi@0	42	import javax.tools.StandardJavaFileManager;
aoqi@0	43
aoqi@0	44	import com.sun.source.util.JavacTask;
aoqi@0	45	import com.sun.source.util.TreeScanner;
aoqi@0	46	import com.sun.tools.javac.api.JavacTool;
aoqi@0	47
aoqi@0	48	public class TestToString {
aoqi@0	49	String[] statements = {
aoqi@0	50	"i = i + 1;",
aoqi@0	51	"i++;",
aoqi@0	52	"m();",
aoqi@0	53	";",
aoqi@0	54	"if (i == 0) return;",
aoqi@0	55	"while (i > 0) i--;",
aoqi@0	56	"{ }",
aoqi@0	57	"{ i++; }",
aoqi@0	58	"class C { }"
aoqi@0	59	};
aoqi@0	60
aoqi@0	61	public static void main(String... args) throws Exception {
aoqi@0	62	new TestToString().run();
aoqi@0	63	}
aoqi@0	64
aoqi@0	65	void run() throws Exception {
aoqi@0	66	for (String s: statements) {
aoqi@0	67	test(s);
aoqi@0	68	}
aoqi@0	69
aoqi@0	70	if (errors > 0)
aoqi@0	71	throw new Exception(errors + " errors found");
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	void test(String stmt) throws IOException {
aoqi@0	75	System.err.println("Test: " + stmt);
aoqi@0	76	List<String> options = Collections.<String>emptyList();
aoqi@0	77	List<? extends JavaFileObject> files = Arrays.asList(new JavaSource(stmt));
aoqi@0	78	JavacTask t = tool.getTask(null, fm, null, options, null, files);
aoqi@0	79	checkEqual(scan(t.parse()), stmt);
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	String scan(Iterable<? extends CompilationUnitTree> trees) {
aoqi@0	83	class Scanner extends TreeScanner<Void,StringBuilder> {
aoqi@0	84	String scan(Iterable<? extends Tree> trees) {
aoqi@0	85	StringBuilder sb = new StringBuilder();
aoqi@0	86	scan(trees, sb);
aoqi@0	87	return sb.toString();
aoqi@0	88	}
aoqi@0	89	@Override
aoqi@0	90	public Void scan(Tree tree, StringBuilder sb) {
aoqi@0	91	if (print && tree instanceof StatementTree) {
aoqi@0	92	sb.append(PREFIX);
aoqi@0	93	sb.append(tree);
aoqi@0	94	sb.append(SUFFIX);
aoqi@0	95	return null;
aoqi@0	96	} else {
aoqi@0	97	return super.scan(tree, sb);
aoqi@0	98	}
aoqi@0	99	}
aoqi@0	100	@Override
aoqi@0	101	public Void visitBlock(BlockTree tree, StringBuilder sb) {
aoqi@0	102	print = true;
aoqi@0	103	try {
aoqi@0	104	return super.visitBlock(tree, sb);
aoqi@0	105	} finally {
aoqi@0	106	print = false;
aoqi@0	107	}
aoqi@0	108	}
aoqi@0	109	boolean print = false;
aoqi@0	110	}
aoqi@0	111	return new Scanner().scan(trees);
aoqi@0	112	}
aoqi@0	113
aoqi@0	114	void checkEqual(String found, String expect) {
aoqi@0	115	boolean match = (found == null) ? (expect == null) :
aoqi@0	116	expect.equals(found
aoqi@0	117	.replaceAll("^\\Q" + PREFIX + "\\E\\s*", "")
aoqi@0	118	.replaceAll("\\s*\\Q" + SUFFIX + "\\E$", "")
aoqi@0	119	.replaceAll("\\s+", " "));
aoqi@0	120
aoqi@0	121	if (!match)
aoqi@0	122	error("Mismatch: expected: " + expect + " found: " + found);
aoqi@0	123	}
aoqi@0	124
aoqi@0	125
aoqi@0	126
aoqi@0	127	void error(String msg) {
aoqi@0	128	System.err.println("Error: " + msg);
aoqi@0	129	errors++;
aoqi@0	130	}
aoqi@0	131
aoqi@0	132	static final String PREFIX = "#<";
aoqi@0	133	static final String SUFFIX = "#>";
aoqi@0	134
aoqi@0	135	JavacTool tool = JavacTool.create();
aoqi@0	136	StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
aoqi@0	137	int errors = 0;
aoqi@0	138
aoqi@0	139	static class JavaSource extends SimpleJavaFileObject {
aoqi@0	140
aoqi@0	141	String source =
aoqi@0	142	"class Test {\n" +
aoqi@0	143	" int i;\n" +
aoqi@0	144	" void m() {\n" +
aoqi@0	145	" #S\n" +
aoqi@0	146	" }\n" +
aoqi@0	147	"}";
aoqi@0	148
aoqi@0	149	public JavaSource(String stmt) {
aoqi@0	150	super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0	151	source = source.replace("#S", stmt);
aoqi@0	152	}
aoqi@0	153
aoqi@0	154	@Override
aoqi@0	155	public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0	156	return source;
aoqi@0	157	}
aoqi@0	158	}
aoqi@0	159	}