Initial commit

include/wfr/common/exceptions/exceptions.h

@@ -0,0 +1,74 @@
+
+#pragma once
+
+
+#include <exception>
+#include <memory>
+#include <string>
+
+namespace wfr {
+namespace exception {
+
+
+/**
+ * Exception base class.
+ */
+class wfr_exception : public std::exception {
+	protected:
+		const std::string message;
+		std::shared_ptr<std::exception> cause;
+
+	public:
+		wfr_exception(const std::string& message = "", std::shared_ptr<std::exception> cause = std::shared_ptr<std::exception>()) noexcept
+				: message(message), cause(cause) {}
+
+		wfr_exception(const wfr_exception& e) noexcept
+				: message(e.message), cause(e.cause) {}
+
+		virtual ~wfr_exception() noexcept {}
+
+		virtual const std::string& getMessage() noexcept { return message; }
+		virtual std::weak_ptr<std::exception> getCause() noexcept { return cause; }
+	    virtual const char* what() const noexcept override { return message.c_str(); };
+
+};
+
+
+/**
+ * Represents a fatal error that results in program abortion
+ **/
+class wfr_fatal_error : public wfr_exception {
+	public:
+		using wfr_exception::wfr_exception;
+};
+
+
+/**
+ * Represents a not found exception.
+ **/
+class wfr_not_found : public wfr_exception {
+	public:
+		using wfr_exception::wfr_exception;
+};
+
+
+/**
+ * Represents a not found activity instance.
+ **/
+class wfr_missing_instance : public wfr_exception {
+	public:
+		using wfr_exception::wfr_exception;
+};
+
+
+/**
+ * Represents an illegal argument.
+ **/
+class wfr_illegal_argument : public wfr_exception {
+	public:
+		using wfr_exception::wfr_exception;
+};
+
+
+}  // namespace exception
+}  // namespace wfr