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#ifndef TOKEN_H
#define TOKEN_H
class Number;
namespace Bu
{
class String;
class Formatter;
};
class Token
{
public:
enum Type
{
tNumber,
tVariable,
tCommand,
tPlus,
tMinus,
tDivide,
tMultiply,
tOpenParen,
tCloseParen,
tEquals,
tEndOfLine,
tEndOfInput
};
Token( Type eType );
Token( Type eType, Bu::String *s );
Token( Type eType, Number *n );
Token( const Token &rSrc );
~Token();
Type eType;
union
{
Bu::String *sVal;
class Number *nVal;
};
};
Bu::Formatter &operator<<( Bu::Formatter &f, Token::Type eType );
#endif
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