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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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/**

 * @test

 * @bug 8056897

 * @modules jdk.compiler/com.sun.tools.javac.parser

 *          jdk.compiler/com.sun.tools.javac.util

 * @summary Proper lexing of integer literals.

 */

import java.io.IOException;

import java.net.URI;

import java.util.Objects;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import com.sun.tools.javac.parser.JavaTokenizer;

import com.sun.tools.javac.parser.ScannerFactory;

import com.sun.tools.javac.parser.Tokens.Token;

import com.sun.tools.javac.parser.Tokens.TokenKind;

import com.sun.tools.javac.util.Context;

import com.sun.tools.javac.util.Log;

public class JavaLexerTest {

    public static void main(String... args) throws Exception {

        new JavaLexerTest().run();

    }

    void run() throws Exception {

        Context ctx = new Context();

        Log log = Log.instance(ctx);

        String input = "0bL 0b20L 0xL ";

        log.useSource(new SimpleJavaFileObject(new URI("mem://Test.java"), JavaFileObject.Kind.SOURCE) {

            @Override

            public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {

                return input;

            }

        });

        char[] inputArr = input.toCharArray();

        JavaTokenizer tokenizer = new JavaTokenizer(ScannerFactory.instance(ctx), inputArr, inputArr.length) {

        };

        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0bL");

        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0b20L");

        assertKind(input, tokenizer, TokenKind.LONGLITERAL, "0xL");

    }

    void assertKind(String input, JavaTokenizer tokenizer, TokenKind kind, String expectedText) {

        Token token = tokenizer.readToken();

        if (token.kind != kind) {

            throw new AssertionError("Unexpected token kind: " + token.kind);

        }

        String actualText = input.substring(token.pos, token.endPos);

        if (!Objects.equals(actualText, expectedText)) {

            throw new AssertionError("Unexpected token text: " + actualText);

        }

    }

}