Mercurial > jdk8-mips64-public > langtools / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/classes/com/sun/tools/javac/parser/Lexer.java	Wed Apr 27 01:34:52 2016 +0800
     1.3 @@ -0,0 +1,87 @@
     1.4 +/*
     1.5 + * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.  Oracle designates this
    1.11 + * particular file as subject to the "Classpath" exception as provided
    1.12 + * by Oracle in the LICENSE file that accompanied this code.
    1.13 + *
    1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.16 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.17 + * version 2 for more details (a copy is included in the LICENSE file that
    1.18 + * accompanied this code).
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License version
    1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.23 + *
    1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.25 + * or visit www.oracle.com if you need additional information or have any
    1.26 + * questions.
    1.27 + */
    1.28 +
    1.29 +package com.sun.tools.javac.parser;
    1.30 +
    1.31 +import com.sun.tools.javac.parser.Tokens.*;
    1.32 +import com.sun.tools.javac.util.Position.LineMap;
    1.33 +
    1.34 +/**
    1.35 + * The lexical analyzer maps an input stream consisting of ASCII
    1.36 + * characters and Unicode escapes into a token sequence.
    1.37 + *
    1.38 + * <p><b>This is NOT part of any supported API.
    1.39 + * If you write code that depends on this, you do so at your own risk.
    1.40 + * This code and its internal interfaces are subject to change or
    1.41 + * deletion without notice.</b>
    1.42 + */
    1.43 +public interface Lexer {
    1.44 +
    1.45 +    /**
    1.46 +     * Consume the next token.
    1.47 +     */
    1.48 +    void nextToken();
    1.49 +
    1.50 +    /**
    1.51 +     * Return current token.
    1.52 +     */
    1.53 +    Token token();
    1.54 +
    1.55 +    /**
    1.56 +     * Return token with given lookahead.
    1.57 +     */
    1.58 +    Token token(int lookahead);
    1.59 +
    1.60 +    /**
    1.61 +     * Return the last character position of the previous token.
    1.62 +     */
    1.63 +    Token prevToken();
    1.64 +
    1.65 +    /**
    1.66 +     * Splits the current token in two and return the first (splitted) token.
    1.67 +     * For instance {@literal '<<<'} is split into two tokens
    1.68 +     * {@literal '<'} and {@literal '<<'} respectively,
    1.69 +     * and the latter is returned.
    1.70 +     */
    1.71 +    Token split();
    1.72 +
    1.73 +    /**
    1.74 +     * Return the position where a lexical error occurred;
    1.75 +     */
    1.76 +    int errPos();
    1.77 +
    1.78 +    /**
    1.79 +     * Set the position where a lexical error occurred;
    1.80 +     */
    1.81 +    void errPos(int pos);
    1.82 +
    1.83 +    /**
    1.84 +     * Build a map for translating between line numbers and
    1.85 +     * positions in the input.
    1.86 +     *
    1.87 +     * @return a LineMap
    1.88 +     */
    1.89 +    LineMap getLineMap();
    1.90 +}