diff --git a/crates/tinymist-query/src/analysis/global.rs b/crates/tinymist-query/src/analysis/global.rs
index e0e086a6..23ec2160 100644
--- a/crates/tinymist-query/src/analysis/global.rs
+++ b/crates/tinymist-query/src/analysis/global.rs
@@ -355,6 +355,39 @@ impl LocalContext {
         }
     }
 
+    /// Get all depended files in the workspace, inclusively.
+    pub fn depended_source_files(&self) -> Vec<TypstFileId> {
+        let mut ids = self.depended_files();
+        let preference = PathPreference::Source {
+            allow_package: false,
+        };
+        ids.retain(|id| preference.is_match(id.vpath().as_rooted_path()));
+        ids
+    }
+
+    /// Get all depended file ids of a compilation, inclusively.
+    /// Note: must be called after compilation.
+    pub fn depended_files(&self) -> Vec<TypstFileId> {
+        let mut ids = vec![];
+        for dep in self.depended_paths() {
+            if let Ok(ref_fid) = self.file_id_by_path(&dep) {
+                ids.push(ref_fid);
+            }
+        }
+        ids
+    }
+
+    /// Get depended paths of a compilation.
+    /// Note: must be called after compilation.
+    pub(crate) fn depended_paths(&self) -> EcoVec<reflexo::ImmutPath> {
+        let mut deps = EcoVec::new();
+        self.world.iter_dependencies(&mut |path| {
+            deps.push(path);
+        });
+
+        deps
+    }
+
     /// Get the world surface for Typst compiler.
     pub fn world(&self) -> &LspWorld {
         &self.shared.world
@@ -601,17 +634,6 @@ impl SharedContext {
         classify_syntax(node, cursor)
     }
 
-    /// Get the real definition of a compilation.
-    /// Note: must be called after compilation.
-    pub(crate) fn dependencies(&self) -> EcoVec<reflexo::ImmutPath> {
-        let mut deps = EcoVec::new();
-        self.world.iter_dependencies(&mut |path| {
-            deps.push(path);
-        });
-
-        deps
-    }
-
     /// Resolve extra font information.
     pub fn font_info(&self, font: typst::text::Font) -> Option<Arc<DataSource>> {
         self.world.font_resolver.describe_font(&font)
diff --git a/crates/tinymist-query/src/references.rs b/crates/tinymist-query/src/references.rs
index 30866c73..0f7ac67c 100644
--- a/crates/tinymist-query/src/references.rs
+++ b/crates/tinymist-query/src/references.rs
@@ -82,7 +82,7 @@ impl ReferencesWorker<'_> {
     fn label_root(mut self) -> Option<Vec<LspLocation>> {
         let mut ids = vec![];
 
-        for dep in self.ctx.ctx.dependencies() {
+        for dep in self.ctx.ctx.depended_paths() {
             if let Ok(ref_fid) = self.ctx.ctx.file_id_by_path(&dep) {
                 ids.push(ref_fid);
             }
diff --git a/crates/tinymist-query/src/symbol.rs b/crates/tinymist-query/src/symbol.rs
index f1e0aab2..51924463 100644
--- a/crates/tinymist-query/src/symbol.rs
+++ b/crates/tinymist-query/src/symbol.rs
@@ -36,9 +36,7 @@ impl SemanticRequest for SymbolRequest {
 
         let mut symbols = vec![];
 
-        // todo! need compilation for iter_dependencies
-
-        for path in ctx.dependencies() {
+        for path in ctx.depended_paths() {
             let Ok(source) = ctx.source_by_path(&path) else {
                 continue;
             };
diff --git a/crates/tinymist-query/src/ty/builtin.rs b/crates/tinymist-query/src/ty/builtin.rs
index 1d7720bd..9e7e01e0 100644
--- a/crates/tinymist-query/src/ty/builtin.rs
+++ b/crates/tinymist-query/src/ty/builtin.rs
@@ -1,4 +1,5 @@
 use core::fmt;
+use std::path::Path;
 
 use ecow::{eco_format, EcoString};
 use once_cell::sync::Lazy;
@@ -90,9 +91,13 @@ impl PathPreference {
         }
     }
 
+    pub fn is_match(&self, path: &Path) -> bool {
+        let ext = path.extension().and_then(|ext| ext.to_str());
+        ext.map_or(false, |ext| self.ext_matcher().is_match(ext))
+    }
+
     pub fn from_ext(path: &str) -> Option<Self> {
-        let path = std::path::Path::new(path).extension()?.to_str()?;
-        PathPreference::iter().find(|preference| preference.ext_matcher().is_match(path))
+        PathPreference::iter().find(|preference| preference.is_match(std::path::Path::new(path)))
     }
 }