add an exception program

this program messes with c++ exceptions.

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+	// Use IntelliSense to learn about possible attributes.
+	// Hover to view descriptions of existing attributes.
+	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"type": "lldb",
+			"request": "launch",
+			"name": "Debug",
+			"program": "${command:cmake.launchTargetPath}",
+			"args": [],
+			"cwd": "${workspaceFolder}",
+		}
+	]
+}

.vscode/settings.json

@@ -1,4 +1,8 @@
 {
 	"editor.detectIndentation": false,
 	"editor.insertSpaces": false,
+	"cmake.configureEnvironment": {
+		"CC": "clang",
+		"CXX": "clang++"
+	},
 }

src/CMakeLists.txt

@@ -6,4 +6,5 @@ target_link_libraries(sqrt PRIVATE Math)
 add_executable(inheritance inheritance.cc)
 add_executable(enumerations enumerations.cc)
 add_executable(namespaces namespaces.cc)
-add_executable(functions functions.cc)
+add_executable(FunctionArguments FunctionArguments.cc)
+add_executable(exceptions exceptions.cc)

src/exceptions.cc

@@ -0,0 +1,122 @@
+#include <exception>
+#include <iostream>
+#include <stdexcept>
+
+namespace Crewmate {
+enum class Type {
+	Imposter,
+	Crewmate
+};
+class NotImposterException : public std::exception {
+private:
+	const char* message;
+
+public:
+	NotImposterException(const char* msg)
+		: message(msg)
+	{
+	}
+	const char* what() const noexcept override
+	{
+		return message;
+	}
+};
+class NotCrewmateException : public std::exception {
+private:
+	const char* message;
+
+public:
+	NotCrewmateException(const char* msg)
+		: message(msg)
+	{
+	}
+
+	const char* what() const noexcept override
+	{
+		return message;
+	}
+};
+class Crewmate {
+public:
+	Crewmate(Type type)
+	{
+		this->type = type;
+	}
+
+	void is_imposter()
+	{
+		switch (this->type) {
+		case Type::Imposter:
+			std::cout << "this crewmate is an imposter. sussy." << std::endl;
+			break;
+		case Type::Crewmate:
+			throw NotImposterException("this crewmate is not an imposter. not sussy.");
+			break;
+		}
+	}
+	void is_crewmate()
+	{
+		switch (this->type) {
+		case Type::Imposter:
+			throw NotCrewmateException("this crewmate is not a crewmate. sussy.");
+			break;
+		case Type::Crewmate:
+			std::cout << "this crewmate is a crewmate. not sussy." << std::endl;
+			break;
+		}
+	}
+	void invariant_testing()
+	{
+		switch (this->type) {
+
+		case Type::Imposter:
+			throw NotCrewmateException("this crewmate is not a crewmate. sussy.");
+		case Type::Crewmate:
+			throw NotImposterException("this crewmate is not an imposter. not sussy.");
+			break;
+		}
+	}
+
+private:
+	Type type;
+};
+}
+
+void exception_handler(const std::exception& exception, const std::string prefix = "Exception: ")
+{
+	std::cerr << prefix << exception.what() << std::endl;
+}
+
+void invariant_test(Crewmate::Crewmate& crewmate)
+{
+	try {
+		crewmate.invariant_testing();
+	} catch (const Crewmate::NotImposterException& err) {
+		exception_handler(err, "Imposter Exception: ");
+	} catch (const Crewmate::NotCrewmateException& err) {
+		exception_handler(err, "Crewmate Exception: ");
+	}
+}
+
+int main()
+{
+	Crewmate::Crewmate imposter(Crewmate::Type::Imposter);
+	Crewmate::Crewmate crewmate(Crewmate::Type::Crewmate);
+
+	try {
+		imposter.is_imposter();
+		imposter.is_crewmate();
+	} catch (const Crewmate::NotCrewmateException& err) {
+		exception_handler(err);
+	}
+
+	try {
+		crewmate.is_crewmate();
+		crewmate.is_imposter();
+	} catch (const Crewmate::NotImposterException& err) {
+		exception_handler(err);
+	}
+
+	invariant_test(imposter);
+	invariant_test(crewmate);
+}

src/namespaces.cc

@@ -11,5 +11,4 @@ namespace Imposter {
 
 int main() {
 	Imposter::Namespace::sussy_function();
-	return 0;
 }