Token.h

/*
 * Token.h
 * BambooTalk
 *
 * Created by Remy Demarest on 28/01/2010.
 * Copyright (c) 2010, Remy Demarest
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the OpenEmu Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY Remy Demarest ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL OpenEmu Team BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BAMBOOTALK_TOKEN_H
#define BAMBOOTALK_TOKEN_H

#include <string>

namespace BambooTalk
{
    class IdentifierInfo;
    
    namespace tok
    {
        enum TokenKind
        {
#define TOK(X) X,
#include "TokenKinds.def"
            TOKEN_COUNT
        };
        const char *getTokenName(enum TokenKind kind);
    }
    
    class Token
    {
        tok::TokenKind kind;
        
        std::string tokenChars;
        
        void *ptrData;
        
    public:
        tok::TokenKind getKind() const { return kind; }
        void setKind(tok::TokenKind k) { kind = k; }
        
        std::string getTokenChars() const { return tokenChars; }
        void setTokenChars(std::string value) { tokenChars = value; }
        
        size_t getLength() const { return tokenChars.length(); }
        
        /// is/isNot - Predicates to check if this token is a specific kind, as in
        /// "if (Tok.is(tok::l_brace)) {...}".
        bool is(tok::TokenKind k) const { return kind == (unsigned) k; }
        bool isNot(tok::TokenKind k) const { return kind != (unsigned) k; }
        
        /// isLiteral - Return true if this is a "literal", like a numeric
        /// constant, string, etc.
        bool isLiteral() const {
            return is(tok::numeric_constant) || is(tok::char_constant) ||
            is(tok::string_literal);
        }
        
        void startToken(void)
        {
            kind = tok::unknown;
            tokenChars = "";
            ptrData = 0;
        }
        
        IdentifierInfo *getIdentifierInfo() const
        {
            if (isLiteral()) return 0;
            return (IdentifierInfo*) ptrData;
        }
        void setIdentifierInfo(IdentifierInfo *II) {
            ptrData = (void*) II;
        }
    };
}

#endif