[wip] c/neco: init and demo

c/neco/_demo/generators/_c/generators.c

@@ -0,0 +1,34 @@
+#include "../../../_neco/neco.h"
+#include <stdio.h>
+#include <unistd.h>
+
+void coroutine(int argc, void *argv[]) {
+  // Yield each int to the caller, one at a time.
+  for (int i = 0; i < 10; i++) {
+    neco_gen_yield(&i);
+  }
+}
+
+static int __neco_main() {
+
+  // Create a new generator coroutine that is used to send ints.
+  neco_gen *gen;
+  neco_gen_start(&gen, sizeof(int), coroutine, 0);
+
+  // Iterate over each int until the generator is closed.
+  int i;
+  while (neco_gen_next(gen, &i) != NECO_CLOSED) {
+    printf("%d\n", i);
+  }
+
+  // This coroutine no longer needs the generator.
+  neco_gen_release(gen);
+  return 0;
+}
+static void _neco_main() { __neco_exit_prog(__neco_main()); }
+void run_main() {
+  neco_env_setpaniconerror(true);
+  neco_env_setcanceltype(NECO_CANCEL_ASYNC);
+  int ret = neco_start(_neco_main, 0);
+  fprintf(stderr, "neco_start: %s (code %d)\n", neco_strerror(ret), ret);
+};

c/neco/_demo/generators/generators.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	_ "unsafe"
+
+	_ "github.com/goplus/llgo/c"
+)
+
+const (
+	LLGoFiles   = "_c/generators.c; ../../_neco/neco.c"
+	LLGoPackage = "link"
+)
+
+func main() {
+	run_main()
+}
+
+//go:linkname run_main C.run_main
+func run_main() {}

c/neco/_demo/gogenerators/g2.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/neco"
+)
+
+func main() {
+	// c.Printf(c.Str("main"))
+	run_main()
+}
+
+func run_main() {
+	// c.Printf(c.Str("run_main"))
+	// c.Fflush(c.Stdout)
+	neco.Neco_env_setpaniconerror(true)
+	neco.Neco_env_setcanceltype(neco.NECO_CANCEL_ASYNC)
+	ret := neco.Neco_start(main2, 0)
+	c.Fprintf(c.Stderr, c.Str("neco_start: %s (code %d)\n"), neco.Neco_strerror(int(ret)), ret)
+}
+
+func main2(argc c.Int, argv ...any) {
+	// c.Printf(c.Str("main2"))
+	// c.Fflush(c.Stdout)
+	neco.Neco_exit_prog(main3())
+}
+
+func main3() c.Int {
+
+	// c.Printf(c.Str("main3"))
+	// c.Fflush(c.Stdout)
+
+	// Create a new generator coroutine that is used to send ints.
+	gen := new(neco.Neco_gen)
+	neco.Neco_gen_start(&gen, unsafe.Sizeof(int(0)), coroutine, 0)
+
+	// Iterate over each int until the generator is closed.
+	var i c.Int
+	for {
+		ret := neco.Neco_gen_next(gen, c.Pointer(&i))
+
+		// c.Printf(c.Str("gen [%d, %d] "), ret, c.Int(neco.NECO_CLOSED))
+		// c.Fflush(c.Stdout)
+
+		if ret != c.Int(neco.NECO_CLOSED) {
+			c.Printf(c.Str("%d\n"), i)
+		} else {
+			break
+		}
+	}
+
+	// This coroutine no longer needs the generator.
+	neco.Neco_gen_release(gen)
+
+	// c.Printf(c.Str("main3 end"))
+	// c.Fflush(c.Stdout)
+
+	return 0
+}
+
+func coroutine(argc c.Int, argv ...any) {
+	// Yield each int to the caller, one at a time.
+	for i := 0; i < 10; i++ {
+		neco.Neco_gen_yield(c.Pointer(&i))
+	}
+	// c.Printf(c.Str("coroutine end"))
+	// c.Fflush(c.Stdout)
+}