Add basic coroutine+await support

rt/include/python/builtins.hpp

@@ -10,6 +10,8 @@
 #include <ostream>
 #include <string>
 
+#include <typon/typon.hpp>
+
 #ifdef __cpp_lib_unreachable
 #include <utility>
 [[noreturn]] inline void TYPON_UNREACHABLE() { std::unreachable(); }
@@ -58,7 +60,7 @@ std::ostream &operator<<(std::ostream &os, std::optional<T> const &opt) {
   return opt ? os << opt.value() : os << "None";
 }
 
-bool is_cpp() { return true; }
+typon::Task<bool> is_cpp() { co_return true; }
 
 class NoneType {
 public:

rt/include/python/builtins/print.hpp

@@ -8,6 +8,8 @@
 #include <iostream>
 #include <ostream>
 
+#include <typon/typon.hpp>
+
 template <typename T>
 concept Streamable = requires(const T &x, std::ostream &s) {
   { s << x } -> std::same_as<std::ostream &>;
@@ -39,13 +41,28 @@ template <typename T>
 concept Printable = requires(const T &x, std::ostream &s) {
   { print_to(x, s) } -> std::same_as<void>;
 };
-
+/*
 template <Printable T, Printable... Args>
-void print(T const &head, Args const &...args) {
+typon::Task<void> print(T const &head, Args const &...args) {
   print_to(head, std::cout);
   (((std::cout << ' '), print_to(args, std::cout)), ...);
-  std::cout << '\n';
-}
+  std::cout << '\n'; co_return;
+}*/
+
+struct {
+  void sync() { std::cout << '\n'; }
+
+  template <Printable T, Printable... Args>
+  void sync(T const &head, Args const &...args) {
+    print_to(head, std::cout);
+    (((std::cout << ' '), print_to(args, std::cout)), ...);
+    std::cout << '\n';
+  }
 
-void print() { std::cout << '\n'; }
+  template<Printable... Args>
+  typon::Task<void> operator()(Args const &...args) {
+    co_return sync(args...);
+  }
+} print;
+//typon::Task<void> print() { std::cout << '\n'; co_return; }
 #endif // TYPON_PRINT_HPP

trans/tests/naive_fibonacci_fork.py

 from typon import fork, sync
 
+def fibo(n):
+    if n < 2:
+        return n
+    a = fibo(n - 1)
+    b = fibo(n - 2)
+    return a + b
+
 
 #def fibo(n: int) -> int:
 #    if n < 2:
@@ -11,4 +18,4 @@ from typon import fork, sync
 
 
 if __name__ == "__main__":
-    print("res=", 5, ".")
\ No newline at end of file
+    print(fibo(30)) # should display 832040
\ No newline at end of file