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use std::sync::Arc;
use relative_path::{RelativePath, RelativePathBuf};
use crate::{
AnalysisChange, Analysis, AnalysisHost, FileId, FileResolver,
};
/// Mock analysis is used in test to bootstrap an AnalysisHost/Analysis
/// from a set of in-memory files.
#[derive(Debug, Default)]
pub struct MockAnalysis {
files: Vec<(String, String)>,
}
impl MockAnalysis {
pub fn new() -> MockAnalysis {
MockAnalysis::default()
}
pub fn with_files(files: &[(&str, &str)]) -> MockAnalysis {
let files = files.iter()
.map(|it| (it.0.to_string(), it.1.to_string()))
.collect();
MockAnalysis { files }
}
pub fn analysis_host(self) -> AnalysisHost {
let mut host = AnalysisHost::new();
let mut file_map = Vec::new();
let mut change = AnalysisChange::new();
for (id, (path, contents)) in self.files.into_iter().enumerate() {
let file_id = FileId((id + 1) as u32);
assert!(path.starts_with('/'));
let path = RelativePathBuf::from_path(&path[1..]).unwrap();
change.add_file(file_id, contents);
file_map.push((file_id, path));
}
change.set_file_resolver(Arc::new(FileMap(file_map)));
host.apply_change(change);
host
}
pub fn analysis(self) -> Analysis {
self.analysis_host().analysis()
}
}
#[derive(Debug)]
struct FileMap(Vec<(FileId, RelativePathBuf)>);
impl FileMap {
fn iter<'a>(&'a self) -> impl Iterator<Item = (FileId, &'a RelativePath)> + 'a {
self.0
.iter()
.map(|(id, path)| (*id, path.as_relative_path()))
}
fn path(&self, id: FileId) -> &RelativePath {
self.iter().find(|&(it, _)| it == id).unwrap().1
}
}
impl FileResolver for FileMap {
fn file_stem(&self, id: FileId) -> String {
self.path(id).file_stem().unwrap().to_string()
}
fn resolve(&self, id: FileId, rel: &RelativePath) -> Option<FileId> {
let path = self.path(id).join(rel).normalize();
let id = self.iter().find(|&(_, p)| path == p)?.0;
Some(id)
}
}
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