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