68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
#ifndef ALSK_ALSK_EDSL_OP_IMPL_OPERAND_H
|
|
#define ALSK_ALSK_EDSL_OP_IMPL_OPERAND_H
|
|
|
|
#include <type_traits>
|
|
#include <utility>
|
|
|
|
#include "../../../skeleton/muscle/muscle.h"
|
|
|
|
namespace alsk {
|
|
namespace edsl {
|
|
|
|
struct OperandTag;
|
|
struct LeafTag;
|
|
|
|
struct OperandBase {
|
|
using IsOperand = OperandTag;
|
|
|
|
constexpr OperandBase() noexcept = default;
|
|
|
|
template<typename S, typename Operand, decltype(std::declval<Operand>().setup(std::declval<S&>()))* = nullptr>
|
|
constexpr void setupFor(Operand& operand, S& skeleton) const noexcept {
|
|
operand.setup(skeleton);
|
|
}
|
|
|
|
template<typename... Args>
|
|
constexpr void setupFor(Args&&...) const noexcept {}
|
|
};
|
|
|
|
template<typename Function_, typename Signature_>
|
|
struct Operand: OperandBase {
|
|
using IsLeaf = LeafTag;
|
|
|
|
using Function = Function_;
|
|
using Signature = Signature_;
|
|
|
|
using Struct = Function_;
|
|
using Links = Signature_;
|
|
|
|
constexpr Operand() noexcept = default;
|
|
|
|
template<typename Signature>
|
|
constexpr auto link() const noexcept { return Operand<Function, Signature>{}; }
|
|
};
|
|
|
|
template<typename Function>
|
|
constexpr auto makeOperand() noexcept {
|
|
return Operand<Function, void()>{};
|
|
}
|
|
|
|
template<typename Signature, typename Function>
|
|
constexpr auto makeOperand() noexcept {
|
|
return Operand<Function, Signature>{};
|
|
}
|
|
|
|
template<typename Signature, Signature function>
|
|
constexpr auto makeOperand() noexcept {
|
|
using Function = Fn<Signature, function>;
|
|
return Operand<Function, typename Function::Signature>{};
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
// TODO C++17
|
|
#define alskMakeOperand(f) makeOperand<decltype(f)&, f>()
|
|
|
|
#endif
|