Method SetUserValue

lua.go:1134–1144

SetUserValue pops a table or nil from the stack and sets it as the new value associated to the userdata at index. http://www.lua.org/manual/5.2/manual.html#lua_setuservalue

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_setuservalue
func (l *State) SetUserValue(index int) {
	l.checkElementCount(1)
	d := l.indexToValue(index).(*userData)
	if l.stack[l.top-1] == nil {
		d.env = nil
	} else {
		t := l.stack[l.top-1].(*table)
		d.env = t
	}
	l.top--
}

// SetMetaTable pops a table from the stack and sets it as the new metatable
// for the value at index.