88 lines
2.6 KiB
Java
88 lines
2.6 KiB
Java
/*
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* Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.javac.parser;
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import com.sun.tools.javac.parser.Tokens.*;
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import com.sun.tools.javac.util.Position.LineMap;
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/**
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* The lexical analyzer maps an input stream consisting of ASCII
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* characters and Unicode escapes into a token sequence.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public interface Lexer {
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/**
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* Consume the next token.
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*/
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void nextToken();
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/**
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* Return current token.
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*/
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Token token();
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/**
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* Return token with given lookahead.
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*/
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Token token(int lookahead);
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/**
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* Return the last character position of the previous token.
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*/
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Token prevToken();
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/**
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* Splits the current token in two and return the first (splitted) token.
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* For instance {@literal '<<<'} is split into two tokens
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* {@literal '<'} and {@literal '<<'} respectively,
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* and the latter is returned.
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*/
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Token split();
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/**
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* Return the position where a lexical error occurred;
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*/
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int errPos();
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/**
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* Set the position where a lexical error occurred;
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*/
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void errPos(int pos);
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/**
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* Build a map for translating between line numbers and
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* positions in the input.
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*
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* @return a LineMap
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*/
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LineMap getLineMap();
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}
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