From f0ddf2756d7ce1cc13cd6dae88b47230851c0328 Mon Sep 17 00:00:00 2001
From: Florent Lamiraux <florent@laas.fr>
Date: Tue, 4 Feb 2020 10:38:39 +0100
Subject: [PATCH] Partially revert 5daf1d390dbd1249a153d015ca00c6cfb847734c:
"[signal-cast-helper] Removed unused template specialization".
DefaultCastRegisterer<std::string>::cast template specialization is
required to set empty string to a signal.
---
src/signal/signal-cast-helper.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/signal/signal-cast-helper.cpp b/src/signal/signal-cast-helper.cpp
index 73c0e57..360f442 100644
--- a/src/signal/signal-cast-helper.cpp
+++ b/src/signal/signal-cast-helper.cpp
@@ -52,6 +52,15 @@ inline boost::any DefaultCastRegisterer<double>::cast(std::istringstream &iss) {
}
}
+// for std::string, do not check failure. If input stream contains an
+// empty string, iss.fail() returns true and an exception is thrown
+template <>
+inline boost::any
+DefaultCastRegisterer<std::string>::cast(std::istringstream &iss) {
+ std::string inst(iss.str());
+ return inst;
+}
+
// for std::string, do not add std::endl at the end of the stream.
template <>
inline void DefaultCastRegisterer<std::string>::disp(const boost::any &object,
--
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