Made Lexer errors fully hidden in global scope

Also improved general ease of use with debugging use __debugbreak when an error is thrown.

NOTE: Parser errors currently crash the program

Common/inc/Error.h

@@ -2,14 +2,41 @@ namespace LX
 {
 	// Base error class for all LX thrown errors //
 	// Holds nothing apart from the v-table //
-	struct RuntimeError
+	struct COMMON_API RuntimeError
 	{
+		// Default constructor which throws a breakpoint on being created //
+		RuntimeError();
+
 		// Prints the error to the console //
 		// Include Common/Console.h for printing util functions //
 		virtual void PrintToConsole() const = 0;
 
 		// Returns a C-String of the type that was thrown //
 		virtual const char* ErrorType() const = 0;
+
+		// Virtual destructor because of polymorphism //
+		virtual ~RuntimeError() = default;
+	};
+
+	// --- Common errors that can be thrown --- //
+
+	// Error thrown when there is an invalid file path //
+	struct COMMON_API InvalidFilePath : public RuntimeError
+	{
+		// Constructor to turn the C++ types to C to expose them in DLL //
+		InvalidFilePath(const std::string& _name, const std::filesystem::path& path);
+
+		// Prints the error to the console //
+		void PrintToConsole() const;
+		
+		// Returns the error as c-string //
+		const char* ErrorType() const;
+
+		// Name of the file that is invalid (used for console output) //
+		const char* name;
+
+		// The location of the file (used for console output) //
+		const char* fileLocation;
 	};
 }