Add test, add astSearchProvider to capabilities

Author: Febbe

clang-tools-extra/clangd/ClangdLSPServer.cpp

@@ -639,6 +639,9 @@ void ClangdLSPServer::onInitialize(const InitializeParams &Params,
       {"workspaceSymbolProvider", true},
       {"referencesProvider", true},
       {"astProvider", true}, // clangd extension
+      {"astSearchProvider",
+       llvm::json::Object{{"search", true},
+                          {"replace", false}}}, // clangd extension
       {"typeHierarchyProvider", true},
       // Unfortunately our extension made use of the same capability name as the
       // standard. Advertise this capability to tell clients that implement our

clang-tools-extra/clangd/test/find-in-ast.test

@@ -0,0 +1,37 @@
+# RUN: clangd -lit-test < %s | FileCheck -strict-whitespace --dump-input always %s
+void bob();
+void f() {
+  bob();
+}
+---
+{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{"textDocument": {"foldingRange": {"lineFoldingOnly": true}}},"trace":"off"}}
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"languageId":"cpp","text":"void bob();\nvoid f() {\n  bob();\n}\n","uri":"test:///foo.cpp","version":1}}}
+---
+{"id":1,"jsonrpc":"2.0","method":"textDocument/searchAST","params":{"textDocument":{"uri":"test:///foo.cpp"},"query":"declRefExpr(to(namedDecl(hasName(\"bob\"))))"}}
+#      CHECK:  "id": 1,
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": [
+# CHECK-NEXT:    {
+# CHECK-NEXT:      "root": {
+# CHECK-NEXT:        "arcana": "DeclRefExpr {{.*}} 'void ()' lvalue Function {{.*}} 'bob' 'void ()'",
+# CHECK-NEXT:        "detail": "bob",
+# CHECK-NEXT:        "kind": "DeclRef",
+# CHECK-NEXT:        "range": {
+# CHECK-NEXT:          "end": {
+# CHECK-NEXT:            "character": 5,
+# CHECK-NEXT:            "line": 2
+# CHECK-NEXT:          },
+# CHECK-NEXT:          "start": {
+# CHECK-NEXT:            "character": 2,
+# CHECK-NEXT:            "line": 2
+# CHECK-NEXT:          }
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "role": "expression"
+# CHECK-NEXT:      }
+# CHECK-NEXT:    }
+# CHECK-NEXT:  ]
+---
+{"jsonrpc":"2.0","id":5,"method":"shutdown"}
+---
+{"jsonrpc":"2.0","method":"exit"}

clang-tools-extra/clangd/test/initialize-params.test

@@ -6,6 +6,10 @@
 # CHECK-NEXT:  "result": {
 # CHECK-NEXT:    "capabilities": {
 # CHECK-NEXT:      "astProvider": true,
+# CHECK-NEXT:      "astSearchProvider": {
+# CHECK-NEXT:        "replace": false,
+# CHECK-NEXT:        "search": true
+# CHECK-NEXT:      },
 # CHECK-NEXT:      "callHierarchyProvider": true,
 # CHECK-NEXT:      "clangdInlayHintsProvider": true,
 # CHECK-NEXT:      "codeActionProvider": true,