1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * @test
26 * @bug 8056897
27 * @modules jdk.compiler/com.sun.tools.javac.parser
28 *          jdk.compiler/com.sun.tools.javac.util
29 * @summary Proper lexing of integer literals.
30 */
31
32import java.io.IOException;
33import java.net.URI;
34import java.util.Objects;
35
36import javax.tools.JavaFileObject;
37import javax.tools.SimpleJavaFileObject;
38
39import com.sun.tools.javac.parser.JavaTokenizer;
40import com.sun.tools.javac.parser.ScannerFactory;
41import com.sun.tools.javac.parser.Tokens.Token;
42import com.sun.tools.javac.parser.Tokens.TokenKind;
43import com.sun.tools.javac.util.Context;
44import com.sun.tools.javac.util.Log;
45
46public class JavaLexerTest {
47    public static void main(String... args) throws Exception {
48        new JavaLexerTest().run();
49    }
50
51    void run() throws Exception {
52        Context ctx = new Context();
53        Log log = Log.instance(ctx);
54        String input = "0bL 0b20L 0xL ";
55        log.useSource(new SimpleJavaFileObject(new URI("mem://Test.java"), JavaFileObject.Kind.SOURCE) {
56            @Override
57            public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
58                return input;
59            }
60        });
61        char[] inputArr = input.toCharArray();
62        JavaTokenizer tokenizer = new JavaTokenizer(ScannerFactory.instance(ctx), inputArr, inputArr.length) {
63        };
64
65        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0bL");
66        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0b20L");
67        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0xL");
68    }
69
70    void assertKind(String input, JavaTokenizer tokenizer, TokenKind kind, String expectedText) {
71        Token token = tokenizer.readToken();
72
73        if (token.kind != kind) {
74            throw new AssertionError("Unexpected token kind: " + token.kind);
75        }
76
77        String actualText = input.substring(token.pos, token.endPos);
78
79        if (!Objects.equals(actualText, expectedText)) {
80            throw new AssertionError("Unexpected token text: " + actualText);
81        }
82    }
83}
84