Error.hpp
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#pragma once
// Distributed under the MIT license. See accompanying
// file LICENSE or https://github.com/henryiii/CLI11 for details.
#include <string>
#include <exception>
#include <stdexcept>
namespace CLI {
// Error definitions
/// All errors derive from this one
struct Error : public std::runtime_error {
int exit_code;
bool print_help;
Error(std::string parent, std::string name, int exit_code=255, bool print_help=true) : runtime_error(parent + ": " + name), exit_code(exit_code), print_help(print_help) {}
};
// Construction errors (not in parsing)
struct ConstructionError : public Error {
// Using Error::Error constructors seem to not work on GCC 4.7
ConstructionError(std::string parent, std::string name, int exit_code=255, bool print_help=true) : Error(parent, name, exit_code, print_help) {}
};
/// Thrown when an option is set to conflicting values (non-vector and multi args, for example)
struct IncorrectConstruction : public ConstructionError {
IncorrectConstruction(std::string name) : ConstructionError("IncorrectConstruction", name, 8) {}
};
/// Thrown on construction of a bad name
struct BadNameString : public ConstructionError {
BadNameString(std::string name) : ConstructionError("BadNameString", name, 1) {}
};
/// Thrown when an option already exists
struct OptionAlreadyAdded : public ConstructionError {
OptionAlreadyAdded(std::string name) : ConstructionError("OptionAlreadyAdded", name, 3) {}
};
// Parsing errors
/// Anything that can error in Parse
struct ParseError : public Error {
ParseError(std::string parent, std::string name, int exit_code=255, bool print_help=true) : Error(parent, name, exit_code, print_help) {}
};
// Not really "errors"
/// This is a successful completion on parsing, supposed to exit
struct Success : public ParseError {
Success() : ParseError("Success", "Successfully completed, should be caught and quit", 0, false) {}
};
/// -h or --help on command line
struct CallForHelp : public ParseError {
CallForHelp() : ParseError("CallForHelp", "This should be caught in your main function, see examples", 0) {}
};
/// Thrown when parsing an INI file and it is missing
struct FileError : public ParseError {
FileError (std::string name) : ParseError("FileError", name, 10) {}
};
/// Thrown when conversion call back fails, such as when an int fails to coerse to a string
struct ConversionError : public ParseError {
ConversionError(std::string name) : ParseError("ConversionError", name, 2) {}
};
/// Thrown when a required option is missing
struct RequiredError : public ParseError {
RequiredError(std::string name) : ParseError("RequiredError", name, 5) {}
};
/// Thrown when too many positionals are found
struct PositionalError : public ParseError {
PositionalError(std::string name) : ParseError("PositionalError", name, 6) {}
};
/// This is just a safety check to verify selection and parsing match
struct HorribleError : public ParseError {
HorribleError(std::string name) : ParseError("HorribleError", "(You should never see this error) " + name, 7) {}
};
// After parsing
/// Thrown when counting a non-existent option
struct OptionNotFound : public Error {
OptionNotFound(std::string name) : Error("OptionNotFound", name, 4) {}
};
}