From 2c4953386ad17fc6b6988c6ec1dfa9865d9d7365 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Thu, 20 Aug 2020 22:28:00 +0300
Subject: [PATCH] Optimize logging of const strings.

GitOrigin-RevId: af8de902d07c4862a77e0d8050db47ee1ccacbf6
---
 tdutils/td/utils/StringBuilder.h | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/tdutils/td/utils/StringBuilder.h b/tdutils/td/utils/StringBuilder.h
index 5491f8053..57fe5b9e0 100644
--- a/tdutils/td/utils/StringBuilder.h
+++ b/tdutils/td/utils/StringBuilder.h
@@ -39,9 +39,22 @@ class StringBuilder {
     return error_flag_;
   }
 
-  StringBuilder &operator<<(const char *str) {
+  template <class T>
+  std::enable_if_t<std::is_same<char *, std::remove_const_t<T>>::value, StringBuilder> &operator<<(T str) {
     return *this << Slice(str);
   }
+  template <class T>
+  std::enable_if_t<std::is_same<const char *, std::remove_const_t<T>>::value, StringBuilder> &operator<<(T str) {
+    return *this << Slice(str);
+  }
+
+  template <size_t N>
+  StringBuilder &operator<<(char (&str)[N]) = delete;
+
+  template <size_t N>
+  StringBuilder &operator<<(const char (&str)[N]) {
+    return *this << Slice(str, N - 1);
+  }
 
   StringBuilder &operator<<(const wchar_t *str) = delete;
 
@@ -94,11 +107,6 @@ class StringBuilder {
 
   StringBuilder &operator<<(const void *ptr);
 
-  template <class T>
-  StringBuilder &operator<<(const T *ptr) {
-    return *this << static_cast<const void *>(ptr);
-  }
-
  private:
   char *begin_ptr_;
   char *current_ptr_;