[rust

rust"/>

[rust

开源rust规则引擎，向引擎加入wme的函数如下：

pub fn add_wme(&mut self, wme: Wme) {let log = self.log.new(o!("wme" => format!("{:?}", wme)));trace!(log, "add wme");observe!(log,Trace::AddedWme {id: wme.0[0],attribute: wme.0[1],value: wme.0[2],});//rustfmt是Rust官方出品的统一代码风格组件//这个是类似000,001,010,011....的次序排列的，01234567//skip的意思是，不要rustfmt对这段代码做修改，，// “For things you do not want rustfmt to mangle, use #[rustfmt::skip]”// 根据WME的三个值，生成8种可能的AlphaTest#[rustfmt::skip]let tests = [AlphaTest([None,           None,           None          ]),AlphaTest([None,           None,           Some(wme.0[2])]),AlphaTest([None,           Some(wme.0[1]), None          ]),AlphaTest([None,           Some(wme.0[1]), Some(wme.0[2])]),AlphaTest([Some(wme.0[0]), None,           None          ]),AlphaTest([Some(wme.0[0]), None,           Some(wme.0[2])]),AlphaTest([Some(wme.0[0]), Some(wme.0[1]), None          ]),AlphaTest([Some(wme.0[0]), Some(wme.0[1]), Som