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#ifndef COMPILER_ERRORHANDLER_H_INCLUDED
#define COMPILER_ERRORHANDLER_H_INCLUDED
#include <string>
namespace Compiler
{
struct TokenLoc;
/// \brief Error handling
///
/// This class collects errors and provides an interface for reporting them to the user.
class ErrorHandler
{
int mWarnings;
int mErrors;
int mWarningsMode;
bool mDowngradeErrors;
protected:
enum Type
{
WarningMessage,
ErrorMessage
};
private:
// mutators
virtual void report(const std::string& message, const TokenLoc& loc, Type type) = 0;
///< Report error to the user.
virtual void report(const std::string& message, Type type) = 0;
///< Report a file related error
public:
ErrorHandler();
///< constructor
virtual ~ErrorHandler();
///< destructor
bool isGood() const;
///< Was compiling successful?
int countErrors() const;
///< Return number of errors
int countWarnings() const;
///< Return number of warnings
void warning(const std::string& message, const TokenLoc& loc);
///< Generate a warning message.
void error(const std::string& message, const TokenLoc& loc);
///< Generate an error message.
void endOfFile();
///< Generate an error message for an unexpected EOF.
virtual void reset();
///< Remove all previous error/warning events
void setWarningsMode(int mode);
///< // 0 ignore, 1 rate as warning, 2 rate as error
/// Treat errors as warnings.
void downgradeErrors(bool downgrade);
};
class ErrorDowngrade
{
ErrorHandler& mHandler;
/// not implemented
ErrorDowngrade(const ErrorDowngrade&);
/// not implemented
ErrorDowngrade& operator=(const ErrorDowngrade&);
public:
explicit ErrorDowngrade(ErrorHandler& handler);
~ErrorDowngrade();
};
}
#endif
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