//---
// fxos-shell.errors: Exceptions with particular handling
//---

#ifndef FXOS_ERRORS_H
#define FXOS_ERRORS_H

#include <fxos/util/format.h>
#include <fmt/core.h>
#include <string>

/* Generic command error, either parsing or execution, which prevents a command
   from accomplishing its intended task. */
class CommandError: public std::exception
{
public:
	CommandError(std::string what): m_what(what) {}

	/* Build directly from format arguments */
	template <typename... Args>
	CommandError(std::string const &format_str, Args&&... args):
		m_what(fmt::format(format_str, args...)) {}

	char const *what() const noexcept override {
		return m_what.c_str();
	}

private:
	std::string m_what;
};

/* Syntax errors for commands. */
class SyntaxError: public std::exception
{
public:
	/* Specifies the file and line of the exception */
	SyntaxError(char const *file, int line, char const *what):
		m_file(file), m_line(line), m_what(what) {}

	/* Provides access to these objects */
	char const *file() const noexcept {
		return m_file;
	}
	int line() const noexcept {
		return m_line;
	}
	char const *what() const noexcept override {
		return m_what;
	}

	/* Additional friendly formatter */
	std::string str() const noexcept {
		return format("%s:%d: %s", m_file, m_line, m_what);
	}

private:
	char const *m_file;
	int m_line;
	char const *m_what;
};

#endif /* FXOS_ERRORS_H */