llgo/c/lua

c/lua/_demo/problem/pushinteger/pushinteger.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	_ "unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/lua"
+)
+
+func main() {
+	L := lua.NewState()
+	defer L.Close()
+
+	L.OpenLibs()
+	// TODO(zzy): fix push interger got stuck
+	code := c.Str(`function combineParams(x) 
+	return x * 2
+end`)
+	if res := L.Dostring(code); res != lua.OK {
+		c.Printf(c.Str("error: %s\n"), L.ToString(-1))
+	}
+	L.GetGlobal(c.Str("combineParams"))
+	c.Printf(c.Str("stack lens:%d\n"), L.GetTop()) // stack lens:1
+
+	L.PushInteger(lua.Integer(42))
+	pushed := L.ToInteger(-1)
+
+	c.Printf(c.Str("pushed: %lld\n"), pushed)      // pushed: 0
+	c.Printf(c.Str("stack lens:%d\n"), L.GetTop()) // stack lens:1
+
+	// L.PushNumber(42)
+	// pushed := L.ToNumber(-1)
+	// c.Printf(c.Str("pushed: %f\n"), pushed)
+
+	if res := L.PCall(1, 1, 0); res != lua.OK {
+		c.Printf(c.Str("error: %s\n"), L.ToString(-1))
+	}
+	if res := L.IsNumber(-1); res != 0 {
+		result := L.ToInteger(-1)
+		c.Printf(c.Str("result %f"), result)
+	}
+}