Add logger singleton

tprcc/include/lang/temp-lang-frontend.hpp

@@ -9,14 +9,6 @@
 
 class TempLangFrontend {
 public:
-	enum class LogLevel {
-		DEBUG,
-		INFO,
-		WARNING,
-		ERROR,
-	};
-
-
 	TempLangFrontend(const std::string &source_file)
 	{
 		m_source_file = source_file;
@@ -32,20 +24,7 @@ public:
 protected:
 	std::string m_source_file;
 
-	void log(LogLevel lvl, const std::string &message) const
+	
-	{
-		switch (lvl) {
-		case LogLevel::ERROR:
-			std::cerr << "[ERR]" << message << std::endl;
-			break;
-		case LogLevel::WARNING:
-			std::cerr << "[WARN]" << message << std::endl;
-			break;
-		default:
-			std::cout << message << std::endl;
-			break;
-		}
-	}
 
 };
 

tprcc/include/tpr/tpr-types.hpp

@@ -39,7 +39,7 @@ public:
 	
 
 	bool check_command(bool print_status) const;
-}
+};
 
 
 }

tprcc/include/tprcc/logger.hpp

@@ -0,0 +1,31 @@
+#ifndef _LOGGER_HPP_
+#define _LOGGER_HPP_
+
+#include <string>
+
+enum class LogLevel {
+		DEBUG,
+		INFO,
+		WARNING,
+		ERROR,
+};
+
+class Logger {
+public:	
+	Logger(Logger &other) = delete;
+	void operator=(const Logger &) = delete;
+
+	void log(LogLevel lvl, const std::string &message) const;
+
+	static Logger *get_logger();
+
+protected:
+	/* Create a proteceted instructure, to prevent construction outside of this class */
+	Logger();
+
+	static Logger *logger_inst;
+
+
+};
+
+#endif /* _LOGGER_HPP_ */

tprcc/src/logger.cpp

@@ -0,0 +1,32 @@
+#include <tprcc/logger.hpp>
+#include <iostream>
+
+Logger *Logger::logger_inst = nullptr;
+
+Logger::Logger()
+{
+
+}
+
+Logger *Logger::get_logger() {
+	if (logger_inst == nullptr) {
+		logger_inst = new Logger();
+	}
+
+	return logger_inst;
+}
+
+void Logger::log(LogLevel lvl, const std::string &message) const
+{
+	switch (lvl) {
+	case LogLevel::ERROR:
+		std::cerr << "[ERR]" << message << std::endl;
+		break;
+	case LogLevel::WARNING:
+		std::cerr << "[WARN]" << message << std::endl;
+		break;
+	default:
+		std::cout << message << std::endl;
+		break;
+	}
+}

tprcc/src/tpr/tpr-frontend.cpp

@@ -1,3 +1,4 @@
+#include <tprcc/logger.hpp>
 #include <tpr/tpr-frontend.hpp>
 
 namespace tpr {
@@ -11,7 +12,7 @@ int TprFrontend::analyze()
 	std::ifstream input_stream(m_source_file);
 
 	if (!input_stream.good()) {
-		log(TempLangFrontend::LogLevel::ERROR, "Cannot read input file " + m_source_file);
+		Logger::get_logger()->log(LogLevel::ERROR, "Cannot read input file " + m_source_file);
 		return -1;
 	}
 

tprcc/src/tpr/tpr-types.cpp

@@ -42,7 +42,6 @@ bool TprCommand::is_whole_number(float num) const
 		return false;
 }
 
-
 bool TprCommand::check_command(bool print_status) const
 {
 	for (unsigned int i = 0; i < 11; i++) {
@@ -56,7 +55,7 @@ bool TprCommand::check_command(bool print_status) const
 			for (unsigned int param_idx = 0; i < m_parameters.size(); i++) {
 				if (is_whole_number(m_parameters[param_idx]) ^ m_specs[i].param_is_whole_num[param_idx]) {
 					if (print_status) {
-						std::cerr << "[WARN]" // TODO:::: Continue here!!
+						 // TODO:::: Continue here!!
 					}
 					return false;
 				}