// Copyright (C) 2017-2022 Jonathan Müller and cppast contributors
// SPDX-License-Identifier: MIT
#ifndef CPPAST_CPP_CONCEPT_HPP_INCLUDED
#define CPPAST_CPP_CONCEPT_HPP_INCLUDED
#include
#include
#include
namespace cppast
{
/// A [[cppast::cpp_entity]() modelling a c++ concept declaration
/// \notes while concepts are technically templates,
/// this is not a [cppast::cpp_template](),
/// as concepts act very differently from other templates
class cpp_concept final : public cpp_entity
{
public:
static cpp_entity_kind kind() noexcept;
/// \returns the template parameters as a string
const cpp_token_string& parameters() const noexcept
{
return parameters_;
}
/// \returns the [cppast::cpp_expression]() defining the concept constraint
const cpp_expression& constraint_expression() const noexcept
{
return *expression_;
}
class builder
{
public:
builder(std::string name)
: concept_(new cpp_concept(std::move(name)))
{}
cpp_token_string& set_parameters(cpp_token_string string) noexcept
{
concept_->parameters_ = std::move(string);
return concept_->parameters_;
}
cpp_expression& set_expression(std::unique_ptr expression) noexcept
{
concept_->expression_ = std::move(expression);
return *concept_->expression_;
}
std::unique_ptr finish(const cpp_entity_index& idx, cpp_entity_id id);
private:
std::unique_ptr concept_;
};
private:
cpp_concept(std::string name)
: cpp_entity(std::move(name)), parameters_({})
{}
cpp_entity_kind do_get_entity_kind() const noexcept override;
cpp_token_string parameters_;
std::unique_ptr expression_;
};
} // namespace cppast
#endif