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textlane_html/plugins/format/
plugin.rs

1use textlane_core::{Allocator, Attach, Error, File, Plugin, Transform, Tree, TreeKind};
2
3use crate::actions::hast::format::format_hast;
4use crate::models::options::Format;
5
6impl Plugin for Format {
7    fn attach(&self, context: &mut Attach) -> Result<(), Error> {
8        context.add_transform(Box::new(self.clone()));
9        Ok(())
10    }
11}
12
13impl Transform for Format {
14    fn input(&self) -> TreeKind {
15        TreeKind::Hast
16    }
17
18    fn output(&self) -> TreeKind {
19        TreeKind::Hast
20    }
21
22    fn run<'a>(
23        &self,
24        tree: Tree<'a>,
25        _file: &mut File,
26        alloc: &'a Allocator,
27    ) -> Result<Tree<'a>, Error> {
28        match tree {
29            Tree::Hast(node) => Ok(Tree::Hast(format_hast(node, self, alloc))),
30            _ => Err(Error::new("invalid-stage", "`html.format` takes hast")),
31        }
32    }
33}