From 7830f430c0fc8af10f1f045c7000fcdc019e494e Mon Sep 17 00:00:00 2001
From: qPCR4vir <arielvina@yahoo.es>
Date: Sun, 14 Apr 2019 19:44:51 +0200
Subject: [PATCH] tokenizer::error

---
 source/gui/place.cpp | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/source/gui/place.cpp b/source/gui/place.cpp
index 4fb3ebab..a9177e28 100644
--- a/source/gui/place.cpp
+++ b/source/gui/place.cpp
@@ -54,6 +54,18 @@ namespace nana
 		class tokenizer
 		{
 		public:
+			struct error : std::invalid_argument
+			{
+				error(std::string           what,
+					  const tokenizer&      tok)
+
+					: std::invalid_argument{ what + " from tokenizer at position " 
+					                        + std::to_string(static_cast<unsigned>(tok.sp_ - tok.divstr_)) },
+					  pos{static_cast<std::string::size_type>(tok.sp_ - tok.divstr_)}
+				{}	
+				std::string::size_type pos;
+		    };
+
 			enum class token
 			{
 				div_start, div_end, splitter,
@@ -462,8 +474,8 @@ namespace nana
 				return 0;
 			}
 		private:
-			const char* divstr_;
-			const char* sp_;
+			const char* divstr_{};
+			const char* sp_{};
 			std::string idstr_;
 			number_t number_;
 			std::vector<number_t> array_;