From ae74352fc6e254dd00fb8f232058e3a85a8e0fd6 Mon Sep 17 00:00:00 2001
From: Dario <dario.rekowski@gmx.de>
Date: Fri, 5 Jun 2020 13:44:41 +0200
Subject: [PATCH] add back const with help of mutable shared mutex

---
 src/cpp/Crypto/mnemonic.cpp | 2 +-
 src/cpp/Crypto/mnemonic.h   | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/cpp/Crypto/mnemonic.cpp b/src/cpp/Crypto/mnemonic.cpp
index e9147ae99..bf8d2fd7d 100644
--- a/src/cpp/Crypto/mnemonic.cpp
+++ b/src/cpp/Crypto/mnemonic.cpp
@@ -153,7 +153,7 @@ int Mnemonic::init(void(*fill_words_func)(unsigned char*), unsigned int original
 	return -5;
 }
 
-short Mnemonic::getWordIndex(const char* word) 
+short Mnemonic::getWordIndex(const char* word) const 
 { 
 	std::shared_lock<std::shared_mutex> _lock(mWorkingMutex);
 	DHASH word_hash = DRMakeStringHash(word); 
diff --git a/src/cpp/Crypto/mnemonic.h b/src/cpp/Crypto/mnemonic.h
index afc708ac1..7d9a848b7 100644
--- a/src/cpp/Crypto/mnemonic.h
+++ b/src/cpp/Crypto/mnemonic.h
@@ -30,13 +30,13 @@ public:
 
 	int init(void(*fill_words_func)(unsigned char*), unsigned int original_size, unsigned int compressed_size);
 
-	inline const char* getWord(short index) { 
+	inline const char* getWord(short index) const { 
 		std::shared_lock<std::shared_mutex> _lock(mWorkingMutex); 
 		if (index < 2048 && index >= 0) return mWords[index]; 
 		return nullptr; 
 	}
-	short getWordIndex(const char* word);
-	inline bool isWordExist(const std::string& word) {
+	short getWordIndex(const char* word) const;
+	inline bool isWordExist(const std::string& word) const {
 		std::shared_lock<std::shared_mutex> _lock(mWorkingMutex);
 		return getWordIndex(word.data()) != -1; 
 	}
@@ -62,7 +62,7 @@ protected:
 	typedef std::pair<std::string, unsigned short> HashCollideWordEntry;
 	std::map<DHASH, unsigned short> mWordHashIndices;
 	std::map<DHASH, std::map<std::string, unsigned short>> mHashCollisionWords;
-	std::shared_mutex mWorkingMutex;
+	mutable std::shared_mutex mWorkingMutex;
 
 };