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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
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package org.netbeans.modules.languages.lexer;

import org.netbeans.api.languages.CharInput;
import org.netbeans.modules.languages.parser.Pattern;
import org.netbeans.spi.lexer.LexerInput;


class InputBridge extends CharInput {

    private LexerInput input;
    private int index = 0;
    private Pattern start;
    private Pattern end;

    
    InputBridge (LexerInput input) {
        this.input = input;
    }

    public char read () {
        index++;
        return (char) input.read ();
    }

    public void setIndex (int index) {
        while (this.index < index)
            read ();
        input.backup (this.index - index);
        this.index = index;
    }

    public int getIndex () {
        return index;
    }

    public char next () {
        char ch = (char) input.read ();
        input.backup (1);
        return ch;
    }

    public boolean eof () {
        return next () == (char) input.EOF;
    }

    public String getString (int from, int to) {
        return input.readText ().toString ();
    }

    public String toString () {
        return input.readText ().toString ();
    }
}


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