Imported Upstream version 0.26.0

components/compiler/errorhandler.hpp

@@ -0,0 +1,68 @@
+
+#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;
+
+        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
+    };
+}
+
+#endif