feat: create query crate

crates/tinymist-query/src/symbol.rs

@@ -0,0 +1,50 @@
+use typst_ts_compiler::NotifyApi;
+
+use crate::document_symbol::get_document_symbols;
+use crate::prelude::*;
+
+#[derive(Debug, Clone)]
+pub struct SymbolRequest {
+    pub pattern: Option<String>,
+    pub position_encoding: PositionEncoding,
+}
+
+pub fn symbol(
+    world: &TypstSystemWorld,
+    SymbolRequest {
+        pattern,
+        position_encoding,
+    }: SymbolRequest,
+) -> Option<Vec<SymbolInformation>> {
+    // todo: expose source
+
+    let mut symbols = vec![];
+
+    world.iter_dependencies(&mut |path, _| {
+        let Ok(source) = get_suitable_source_in_workspace(world, path) else {
+            return;
+        };
+        let uri = Url::from_file_path(path).unwrap();
+        let res = get_document_symbols(source, uri, position_encoding).and_then(|symbols| {
+            pattern
+                .as_ref()
+                .map(|pattern| filter_document_symbols(symbols, pattern))
+        });
+
+        if let Some(mut res) = res {
+            symbols.append(&mut res)
+        }
+    });
+
+    Some(symbols)
+}
+
+fn filter_document_symbols(
+    symbols: Vec<SymbolInformation>,
+    query_string: &str,
+) -> Vec<SymbolInformation> {
+    symbols
+        .into_iter()
+        .filter(|e| e.name.contains(query_string))
+        .collect()
+}