wxcryptsetlexer.h

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#ifndef wxcryptsetlexer_h
#define wxcryptsetlexer_h
 
// WarpX includes
 
// std includes
#include <iostream>
#include <istream>
#include <string>
 
// WarpX input file lexer tokens
enum
{
    WX_ERROR = -2,
    WX_DONE = -1,
    WX_LEFT_BOX = 256,
    WX_RIGHT_BOX,
    WX_LEFT_ANGLE,
    WX_RIGHT_ANGLE,
    WX_ID,
    WX_KEY = WX_ID, // key and value are just IDs
    WX_VALUE = WX_ID,
    WX_EQUAL,
    WX_FRONT_SLASH,
    WX_COMMA,
    WX_INT,
    WX_REAL,
    WX_STRING,
    WX_SEMI_COLON,
    WX_LEFT_ANGLE_FRONT_SLASH,
    WX_LEFT_CURLY_BRACKET,
    WX_RIGHT_CURLY_BRACKET
};
 
class WxCryptSetLexer
{
public:
    WxCryptSetLexer(std::istream& is) : _is(is), _lineno(1), _integer(0), _real(0.0)
    {
    }
 
    int yylex()
    {
        _lastSym = _yylex();
        return _lastSym;
    }
 
    unsigned lineno() const
    {
        return _lineno;
    }
 
    std::string YYText() const
    {
        return _yytext;
    }
 
    int integer() const
    {
        return _integer;
    }
 
    double real() const
    {
        return _real;
    }
 
    int lastSym() const
    {
        return _lastSym;
    }
 
private:
    std::istream& _is; // input stream to tokenize
    unsigned _lineno;
    std::string _yytext; // text of last token read
    int _integer;        // scanned integer
    double _real;        // scanned real
    unsigned _lastSym;   // last symbol scanned
 
    // do the actual tokenization
    int _yylex();
 
    // get next char with \'s interpreted
    char _backslash(char c);
 
    // look ahead for two character operators
    unsigned _follow(char expect, unsigned ifyes, unsigned ifno);
 
    // check if character can belong to WX_ID
    bool _isidchar(char c);
 
    // scans a number
    int _scan_number();
};
 
#endif //  wxcryptsetlexer_h_h