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use std::fmt; use std::path::PathBuf; #[derive(Eq, Debug, Clone, Hash)] pub enum URI { #[cfg(test)] Test, Exact(String), File(PathBuf), Stdlib(PathBuf), Stdin, REPLLine(usize), Main, } impl URI { pub fn neighboring_file(&self, name: &str) -> Option<URI> { match self { URI::Exact(s) => { let mut segments: Vec<_> = s.split("/").collect(); segments.pop(); segments.push(name.as_ref()); Some(URI::Exact(segments.join("/"))) } URI::File(path) | URI::Stdlib(path) => { let mut path = path.clone(); path.pop(); Some(URI::File(path)) } _ => None, } } pub fn basename(&self) -> Option<String> { match self { URI::Exact(s) => { let mut segments: Vec<_> = s.split("/").collect(); segments.pop().map(|s| s.into()) } URI::File(path) | URI::Stdlib(path) => { path.file_name().map(|os| os.to_string_lossy().to_string()) } _ => None, } } pub fn matches_basename(&self, basename: &str) -> bool { self.basename() == Some(basename.into()) } pub fn is_stdlib(&self) -> bool { match self { URI::Stdlib(_) => true, _ => false, } } } impl PartialEq for URI { fn eq(&self, other: &Self) -> bool { format!("{}", self) == format!("{}", other) } } impl fmt::Display for URI { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { match self { #[cfg(test)] URI::Test => write!(f, "test:"), URI::Exact(s) => write!(f, "{}", s), URI::File(path) | URI::Stdlib(path) => write!(f, "file://{}", path.display()), URI::Stdin => write!(f, "stdin:"), URI::REPLLine(n) => write!(f, "repl:{}", n), URI::Main => write!(f, "main"), } } }