tinymist_query/
lsp_typst_boundary.rs

1//! Conversions between Typst and LSP types and representations
2
3use tinymist_std::path::PathClean;
4use tinymist_world::vfs::PathResolution;
5
6use crate::prelude::*;
7
8/// An LSP Position encoded by [`PositionEncoding`].
9pub use tinymist_analysis::location::LspPosition;
10/// An LSP range encoded by [`PositionEncoding`].
11pub use tinymist_analysis::location::LspRange;
12
13pub use tinymist_analysis::location::*;
14
15const UNTITLED_ROOT: &str = "/untitled";
16static EMPTY_URL: LazyLock<Url> = LazyLock::new(|| Url::parse("file://").unwrap());
17
18/// Convert a path to a URL.
19pub fn untitled_url(path: &Path) -> anyhow::Result<Url> {
20    Ok(Url::parse(&format!("untitled:{}", path.display()))?)
21}
22
23/// Determines if a path is untitled.
24pub fn is_untitled_path(p: &Path) -> bool {
25    p.starts_with(UNTITLED_ROOT)
26}
27
28/// Convert a path to a URL.
29pub fn path_to_url(path: &Path) -> anyhow::Result<Url> {
30    if let Ok(untitled) = path.strip_prefix(UNTITLED_ROOT) {
31        // rust-url will panic on converting an empty path.
32        if untitled == Path::new("nEoViM-BuG") {
33            return Ok(EMPTY_URL.clone());
34        }
35
36        return untitled_url(untitled);
37    }
38
39    url_from_file_path(path)
40}
41
42/// Convert a path resolution to a URL.
43pub fn path_res_to_url(path: PathResolution) -> anyhow::Result<Url> {
44    match path {
45        PathResolution::Rootless(path) => untitled_url(path.as_rooted_path()),
46        PathResolution::Resolved(path) => path_to_url(&path),
47    }
48}
49
50/// Convert a URL to a path.
51pub fn url_to_path(uri: &Url) -> PathBuf {
52    if uri.scheme() == "file" {
53        // typst converts an empty path to `Path::new("/")`, which is undesirable.
54        if !uri.has_host() && uri.path() == "/" {
55            return PathBuf::from("/untitled/nEoViM-BuG");
56        }
57
58        return url_to_file_path(uri);
59    }
60
61    if uri.scheme() == "untitled" {
62        let mut bytes = UNTITLED_ROOT.as_bytes().to_vec();
63
64        // This is rust-url's path_segments, but vscode's untitle doesn't like it.
65        let path = uri.path();
66        let segs = path.strip_prefix('/').unwrap_or(path).split('/');
67        for segment in segs {
68            bytes.push(b'/');
69            bytes.extend(percent_encoding::percent_decode(segment.as_bytes()));
70        }
71
72        return Path::new(String::from_utf8_lossy(&bytes).as_ref()).clean();
73    }
74
75    url_to_file_path(uri)
76}
77
78#[cfg(not(target_arch = "wasm32"))]
79fn url_from_file_path(path: &Path) -> anyhow::Result<Url> {
80    Url::from_file_path(path).or_else(|never| {
81        let _: () = never;
82
83        anyhow::bail!("could not convert path to URI: path: {path:?}",)
84    })
85}
86
87#[cfg(target_arch = "wasm32")]
88fn url_from_file_path(path: &Path) -> anyhow::Result<Url> {
89    // In WASM, create a simple file:// URL
90    let path_str = path.to_string_lossy();
91    let url_str = if path_str.starts_with('/') {
92        format!("file://{}", path_str)
93    } else {
94        format!("file:///{}", path_str)
95    };
96    Url::parse(&url_str).map_err(|e| anyhow::anyhow!("could not convert path to URI: {}", e))
97}
98
99#[cfg(not(target_arch = "wasm32"))]
100fn url_to_file_path(uri: &Url) -> PathBuf {
101    uri.to_file_path()
102        .unwrap_or_else(|_| panic!("could not convert URI to path: URI: {uri:?}",))
103}
104
105#[cfg(target_arch = "wasm32")]
106fn url_to_file_path(uri: &Url) -> PathBuf {
107    // In WASM, manually parse the URL path
108    PathBuf::from(uri.path())
109}
110#[cfg(test)]
111mod test {
112    use super::*;
113
114    #[test]
115    fn test_untitled() {
116        let path = Path::new("/untitled/test");
117        let uri = path_to_url(path).unwrap();
118        assert_eq!(uri.scheme(), "untitled");
119        assert_eq!(uri.path(), "test");
120
121        let path = url_to_path(&uri);
122        assert_eq!(path, Path::new("/untitled/test").clean());
123        assert!(is_untitled_path(&path));
124    }
125
126    #[test]
127    fn unnamed_buffer() {
128        // https://github.com/neovim/nvim-lspconfig/pull/2226
129        let uri = EMPTY_URL.clone();
130        let path = url_to_path(&uri);
131        assert_eq!(path, Path::new("/untitled/nEoViM-BuG"));
132
133        let uri2 = path_to_url(&path).unwrap();
134        assert_eq!(EMPTY_URL.clone(), uri2);
135    }
136}
tinymist_query/lsp_typst_boundary.rs

tinymist_query/
lsp_typst_boundary.rs
