feat(xatu): add JSON debug output for parsed files

src/xatu/xatu.rs

@@ -29,6 +29,43 @@ impl std::fmt::Display for Report {
     }
 }
 
+/// Contains parser output without lint diagnostics.
+#[derive(Debug, serde::Serialize)]
+pub struct DebugReport {
+    files: Vec<DebugFile>,
+}
+
+impl DebugReport {
+    pub fn has_parse_errors(&self) -> bool {
+        self.files.iter().any(|file| !file.parsed.errors.is_empty())
+    }
+}
+
+#[derive(Debug, serde::Serialize)]
+struct DebugFile {
+    path: std::path::PathBuf,
+    parsed: ast::ParsedFile,
+}
+
+/// Collects parser output without running lint rules.
+pub fn debug(mut files: Vec<SourceFile>) -> DebugReport {
+    files.sort_by(|left, right| left.path.cmp(&right.path));
+    files.dedup_by(|left, right| left.path == right.path);
+    let mut store = FileStore::default();
+    let files = files
+        .into_iter()
+        .map(|file| {
+            let file_id = store.add(file);
+            let file = store.get(file_id);
+            DebugFile {
+                path: file.path.clone(),
+                parsed: parser::parse_file(file_id, &file.source),
+            }
+        })
+        .collect();
+    DebugReport { files }
+}
+
 /// Analyzes source files and returns the diagnostics Xatu finds.
 pub fn future_sight(files: Vec<SourceFile>) -> status::Result<Report> {
     let mut store = FileStore::default();