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#ifndef TOKENSTREAM_H_
#define TOKENSTREAM_H_
#include <string>
#include <vector>
class TokenStream;
class TokenPoint
{
public:
TokenPoint(TokenStream& S);
~TokenPoint();
bool accept();
bool reject();
private:
TokenPoint& operator=(const TokenPoint&)
{
return *this;
}
TokenStream& Stream;
unsigned int Pos;
};
class TokenStream
{
public:
TokenStream();
TokenStream(const std::string& Input);
bool eos() const;
bool eosButWhite();
std::string makeFileName();
std::string cIdentifier();
std::string cToken();
std::string cString();
bool whiteSpace();
bool literal(const std::string& S);
void error(const std::string& Err);
unsigned int errors() const;
private:
bool literal(char c);
bool alpha();
bool numeric();
std::string Content;
std::vector<unsigned int> LineNo;
unsigned int Index;
unsigned int Errors;
friend class TokenPoint;
};
#endif
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