fix: error fixes

Signed-off-by: Vladislav Oleshko <[email protected]>

Author: dranikpg

src/core/search/search.cc

@@ -20,7 +20,7 @@ AstExpr ParseQuery(std::string_view query) {
   QueryDriver driver{};
   driver.ResetScanner();
   driver.SetInput(std::string{query});
-  (void)Parser (&driver)();  // throws
+  (void)Parser (&driver)();  // can throw
   return driver.Take();
 }
 
@@ -82,8 +82,12 @@ SearchAlgorithm::~SearchAlgorithm() = default;
 bool SearchAlgorithm::Init(string_view query) {
   try {
     query_ = make_unique<AstExpr>(ParseQuery(query));
-    return true;
+    return !holds_alternative<monostate>(*query_);
+  } catch (const Parser::syntax_error& se) {
+    LOG(INFO) << "Failed to parse query \"" << query << "\":" << se.what();
+    return false;
   } catch (...) {
+    LOG(INFO) << "Unexpected query parser error";
     return false;
   }
 }

src/core/search/search_parser_test.cc

@@ -36,7 +36,7 @@ class SearchParserTest : public ::testing::Test {
 
   void ParseExpr(const std::string& str) {
     raw_expr_ = str;
-    search_algo_.Init(str);
+    CHECK(search_algo_.Init(str));
   }
 
   bool Check(DocumentAccessor* doc) const {