Allow viewing the crate graph in a webview

crates/rust-analyzer/src/handlers.rs

@@ -117,6 +117,12 @@ pub(crate) fn handle_view_hir(
     Ok(res)
 }
 
+pub(crate) fn handle_view_crate_graph(snap: GlobalStateSnapshot, (): ()) -> Result<String> {
+    let _p = profile::span("handle_view_crate_graph");
+    let res = snap.analysis.view_crate_graph()??;
+    Ok(res)
+}
+
 pub(crate) fn handle_expand_macro(
     snap: GlobalStateSnapshot,
     params: lsp_ext::ExpandMacroParams,

crates/rust-analyzer/src/lsp_ext.rs

@@ -61,6 +61,14 @@ impl Request for ViewHir {
     const METHOD: &'static str = "rust-analyzer/viewHir";
 }
 
+pub enum ViewCrateGraph {}
+
+impl Request for ViewCrateGraph {
+    type Params = ();
+    type Result = String;
+    const METHOD: &'static str = "rust-analyzer/viewCrateGraph";
+}
+
 pub enum ExpandMacro {}
 
 impl Request for ExpandMacro {

crates/rust-analyzer/src/main_loop.rs

@@ -513,6 +513,7 @@ impl GlobalState {
             .on::<lsp_ext::AnalyzerStatus>(handlers::handle_analyzer_status)
             .on::<lsp_ext::SyntaxTree>(handlers::handle_syntax_tree)
             .on::<lsp_ext::ViewHir>(handlers::handle_view_hir)
+            .on::<lsp_ext::ViewCrateGraph>(handlers::handle_view_crate_graph)
             .on::<lsp_ext::ExpandMacro>(handlers::handle_expand_macro)
             .on::<lsp_ext::ParentModule>(handlers::handle_parent_module)
             .on::<lsp_ext::Runnables>(handlers::handle_runnables)