constraint.hh File Reference

#include <concepts>
#include <optional>
#include <string>
#include <string_view>
#include "cli/error.hh"

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Classes
struct	cli::ConstraintResult
	The result type returned by a constraints() post-parse hook. More...

Namespaces
namespace	cli
namespace	cli::constraint
	Post-parse constraint helpers.

Functions
template<detail::NamedProviderArg... Args>
auto	cli::constraint::one_of (const Args &... args) -> ConstraintResult
	Exactly one of the listed options must be provided.
template<detail::NamedProviderArg... Args>
auto	cli::constraint::at_most_one_of (const Args &... args) -> ConstraintResult
	At most one of the listed options may be provided.
template<detail::NamedProviderArg... Args>
auto	cli::constraint::all_of (const Args &... args) -> ConstraintResult
	All of the listed options must be provided.
template<detail::NamedProviderArg... Args>
auto	cli::constraint::all_or_none (const Args &... args) -> ConstraintResult
	Either all of the listed options must be provided, or none.
template<detail::NamedProviderArg Cond, detail::NamedProviderArg Req>
auto	cli::constraint::requires_if (const Cond &condition, const Req &required) -> ConstraintResult
	If condition is provided, required must also be provided.