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#ifndef FUNCT_H
#define FUNCT_H
#include <string>
#include <vector>
#include "Halide.h"
template<typename T>
class FuncRefT : public T {
Halide::FuncRef untyped;
public:
typedef Halide::Stage Stage;
typedef Halide::Tuple Tuple;
FuncRefT(const Halide::FuncRef &untyped)
: T(untyped.function().has_pure_definition() ? T(Tuple(untyped)) : T()),
untyped(untyped) {
}
Stage operator=(T x) {
return untyped = x;
}
Stage operator+=(T x) {
return untyped = T(Tuple(untyped)) + x;
}
Stage operator-=(T x) {
return untyped = T(Tuple(untyped)) - x;
}
Stage operator*=(T x) {
return untyped = T(Tuple(untyped)) * x;
}
Stage operator/=(T x) {
return untyped = T(Tuple(untyped)) / x;
}
};
template<typename T>
class FuncT : public Halide::Func {
public:
typedef Halide::Var Var;
typedef Halide::Expr Expr;
typedef Halide::Func Func;
explicit FuncT(const std::string &name)
: Func(name) {
}
FuncT() {
}
explicit FuncT(Expr e)
: Func(e) {
}
explicit FuncT(Func f)
: Func(f) {
}
explicit FuncT(Halide::Internal::Function f)
: Func(f) {
}
template<typename... Args>
FuncRefT<T> operator()(Args &&...args) const {
return Func::operator()(std::forward<Args>(args)...);
}
FuncRefT<T> operator()(std::vector<Expr> vars) const {
return Func::operator()(vars);
}
FuncRefT<T> operator()(std::vector<Var> vars) const {
return Func::operator()(vars);
}
};
// Forward operator overload invocations on FuncRefT to
// the type the user intended (T).
// TODO(dsharlet): This is obscene. Find a better way... but it is unlikely
// there is one.
template<typename T>
T operator-(FuncRefT<T> x) {
return -static_cast<T>(x);
}
template<typename T>
T operator~(FuncRefT<T> x) {
return ~static_cast<T>(x);
}
template<typename T>
T operator+(FuncRefT<T> a, T b) {
return static_cast<T>(a) + b;
}
template<typename T>
T operator-(FuncRefT<T> a, T b) {
return static_cast<T>(a) - b;
}
template<typename T>
T operator*(FuncRefT<T> a, T b) {
return static_cast<T>(a) * b;
}
template<typename T>
T operator/(FuncRefT<T> a, T b) {
return static_cast<T>(a) / b;
}
template<typename T>
T operator%(FuncRefT<T> a, T b) {
return static_cast<T>(a) % b;
}
template<typename T>
T operator+(T a, FuncRefT<T> b) {
return a + static_cast<T>(b);
}
template<typename T>
T operator-(T a, FuncRefT<T> b) {
return a - static_cast<T>(b);
}
template<typename T>
T operator*(T a, FuncRefT<T> b) {
return a * static_cast<T>(b);
}
template<typename T>
T operator/(T a, FuncRefT<T> b) {
return a / static_cast<T>(b);
}
template<typename T>
T operator%(T a, FuncRefT<T> b) {
return a % static_cast<T>(b);
}
template<typename T>
Halide::Expr operator==(FuncRefT<T> a, T b) {
return static_cast<T>(a) == b;
}
template<typename T>
Halide::Expr operator!=(FuncRefT<T> a, T b) {
return static_cast<T>(a) != b;
}
template<typename T>
Halide::Expr operator<=(FuncRefT<T> a, T b) {
return static_cast<T>(a) <= b;
}
template<typename T>
Halide::Expr operator>=(FuncRefT<T> a, T b) {
return static_cast<T>(a) >= b;
}
template<typename T>
Halide::Expr operator<(FuncRefT<T> a, T b) {
return static_cast<T>(a) < b;
}
template<typename T>
Halide::Expr operator>(FuncRefT<T> a, T b) {
return static_cast<T>(a) > b;
}
template<typename T>
Halide::Expr operator==(T a, FuncRefT<T> b) {
return a == static_cast<T>(b);
}
template<typename T>
Halide::Expr operator!=(T a, FuncRefT<T> b) {
return a != static_cast<T>(b);
}
template<typename T>
Halide::Expr operator<=(T a, FuncRefT<T> b) {
return a <= static_cast<T>(b);
}
template<typename T>
Halide::Expr operator>=(T a, FuncRefT<T> b) {
return a >= static_cast<T>(b);
}
template<typename T>
Halide::Expr operator<(T a, FuncRefT<T> b) {
return a < static_cast<T>(b);
}
template<typename T>
Halide::Expr operator>(T a, FuncRefT<T> b) {
return a > static_cast<T>(b);
}
#endif
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