add LoadString method for evaluating strings in lua context

1 files changed, 17 insertions, 0 deletions

diff --git a/lua.go b/lua.go
index 1c23126..f13a8cb 100644
--- a/lua.go
+++ b/lua.go
@@ -121,6 +121,23 @@ func (l *Lua) Next() bool {
 	return C.lua_next(l.l, -2) != 0
 }
 
+func (l *Lua) LoadString(code string) error {
+	cstr := C.CString(code)
+	defer C.free(unsafe.Pointer(cstr))
+	if C.luaL_loadstring(l.l, cstr) != C.LUA_OK {
+		errMsg := l.ToString(-1)
+		l.Pop(1)
+		return errors.New(errMsg)
+	}
+	if !l.PCall(0, 0) {
+		errMsg := l.ToString(-1)
+		l.Pop(1)
+		return errors.New(errMsg)
+	}
+	l.Pop(l.StackLen())
+	return nil
+}
+
 func (l *Lua) PushTableItem(key string) {
 	ckey := C.CString(key)
 	defer C.free(unsafe.Pointer(ckey))