add TryNodeFromJsonString: ability to parse object and check errors without try-catch

2 files changed, 5 insertions, 0 deletions

diff --git a/library/cpp/json/common/defs.cpp b/library/cpp/json/common/defs.cpp
index da86da82e42..fbc86c0f181 100644
--- a/library/cpp/json/common/defs.cpp
+++ b/library/cpp/json/common/defs.cpp
@@ -62,6 +62,7 @@ bool TJsonCallbacks::OnEnd() {
 }
 
 void TJsonCallbacks::OnError(size_t off, TStringBuf reason) {
+    HaveErrors = true;
     if (ThrowException) {
         ythrow TJsonException() << "JSON error at offset " << off << " (" << reason << ")";
     }
diff --git a/library/cpp/json/common/defs.h b/library/cpp/json/common/defs.h
index d3c8761bcc0..ae3985508be 100644
--- a/library/cpp/json/common/defs.h
+++ b/library/cpp/json/common/defs.h
@@ -32,7 +32,11 @@ namespace NJson {
         virtual bool OnEnd();
         virtual void OnError(size_t off, TStringBuf reason);
 
+        bool GetHaveErrors() const {
+            return HaveErrors;
+        }
     protected:
         bool ThrowException;
+        bool HaveErrors = false;
     };
 }