In table can not process by function and other limation

Question

In table can not process by function and other limation

Opened this issue 6 years ago · 0 comments

#[derive(Clone, ZapperRunner, Serialize)]
#[filter = "checkshow/0s"]
struct Team {
    idx: i32,
    name: String,
    score: u8,
}

fn checkshow(_data: &Team, _args: &[f64], input: &str, buffer: &mut String) {
    if (_data.idx == 0) {
        buffer.push_str("champion");
    }
}

#[derive(ZapperEnv)]
#[runner = "Team"]
struct Provider {
    year: u32,
}

pub fn teams(b: &mut criterion::Bencher, _: &usize) {
    use serde_json::value::Map;
    let template = "<html>
  <head>
    <title>{{year}}</title>
  </head>
  <body>
    <h1>CSL {{year}}</h1>
    <ul>
    {{#each group as |p| ~}}
      <li class=\"{{p.name | checkshow}}\">
      <b>{{p.name}}</b>: {{p.score}}
      </li>
    {{/each~}}
    </ul>
  </body>
</html>";
    // build up a group of 1000 (similar) people
    let mut group = vec![
        Team { idx: 0, name: "Jiangsu".into(), score: 43 },
        Team { idx: 1, name: "Beijing".into(), score: 27 },
        Team { idx: 2, name: "Guangzhou".into(), score: 22 },
        Team { idx: 3, name: "Shandong".into(), score: 12 },
    ];


    let mut data = Map::new();
    data.insert("year".to_string(), to_json(&"2015".to_string()));
    let mut handlebars = Handlebars::new();
    handlebars
        .register_template_string("table", template)
        .unwrap();

    b.iter(|| {
        let mut data = data.clone();
        data.insert("group".to_string(), to_json(&group));
        handlebars.render("table", &data).unwrap()
    });
}

In this template, I just need for loop index and input constant string
like {{"champion" | checkshow}} or move champion to ZapperEnv
But 1. ZapperEnv can't use filter function
But 2. the template can't input constant string,
So I modify struct "Team", add member called idx.
But I found only input string can output string.
So I modify {{p.idx | checkshow}} to {{p.name | checkshow}}
It's not work.

{{#each group as |p| ~}}
      <li class=\"{{p.name | checkshow}}\">
      <b>{{p.name}}</b>: {{p.score}}
      </li>
{{/each~}}
// this part always get Error:"InvalidSyntax"

Why I do that?
To add zapper into this https://github.com/damody/template-benchmarks-rs
please fix zapper functional to run the benchmark.