From c09d9c12e79fde83a87b2394c88b32e568271eda Mon Sep 17 00:00:00 2001
From: Nat Goodspeed <nat@lindenlab.com>
Date: Thu, 17 May 2018 05:45:36 -0400
Subject: [PATCH] SL-821: Add WSTRINGIZE() and DEWSTRINGIZE() macros for wide
strings.
Streamline convenience overload stringize(std::wstring); make convenience
overload wstringize(std::string) symmetrically convert from UTF-8 string.
Also eliminate STRINGIZE() et al. dependency on Boost.Phoenix: use lambdas
instead.
Using lambdas instead of template expansion necessitates reordering some code
in wrapllerrs.h.
---
indra/llcommon/stringize.h | 52 +++++++++++++++++--------------
indra/llcommon/tests/wrapllerrs.h | 14 ++++-----
2 files changed, 36 insertions(+), 30 deletions(-)
diff --git a/indra/llcommon/stringize.h b/indra/llcommon/stringize.h
index a5a90d72973..38dd198ad31 100644
--- a/indra/llcommon/stringize.h
+++ b/indra/llcommon/stringize.h
@@ -30,7 +30,6 @@
#define LL_STRINGIZE_H
#include <sstream>
-#include <boost/phoenix/phoenix.hpp>
#include <llstring.h>
/**
@@ -53,12 +52,7 @@ std::basic_string<CHARTYPE> gstringize(const T& item)
*/
inline std::string stringize(const std::wstring& item)
{
- LL_WARNS() << "WARNING: Possible narrowing" << LL_ENDL;
-
- std::string s;
-
- s = wstring_to_utf8str(item);
- return gstringize<char>(s);
+ return wstring_to_utf8str(item);
}
/**
@@ -76,7 +70,10 @@ std::string stringize(const T& item)
*/
inline std::wstring wstringize(const std::string& item)
{
- return gstringize<wchar_t>(item.c_str());
+ // utf8str_to_wstring() returns LLWString, which isn't necessarily the
+ // same as std::wstring
+ LLWString s(utf8str_to_wstring(item));
+ return std::wstring(s.begin(), s.end());
}
/**
@@ -91,10 +88,10 @@ std::wstring wstringize(const T& item)
/**
* stringize_f(functor)
*/
-template <typename Functor>
-std::string stringize_f(Functor const & f)
+template <typename CHARTYPE, typename Functor>
+std::basic_string<CHARTYPE> stringize_f(Functor const & f)
{
- std::ostringstream out;
+ std::basic_ostringstream<CHARTYPE> out;
f(out);
return out.str();
}
@@ -108,31 +105,37 @@ std::string stringize_f(Functor const & f)
* return out.str();
* @endcode
*/
-#define STRINGIZE(EXPRESSION) (stringize_f(boost::phoenix::placeholders::arg1 << EXPRESSION))
+#define STRINGIZE(EXPRESSION) (stringize_f<char>([&](std::ostream& out){ out << EXPRESSION; }))
+/**
+ * WSTRINGIZE() is the wstring equivalent of STRINGIZE()
+ */
+#define WSTRINGIZE(EXPRESSION) (stringize_f<wchar_t>([&](std::wostream& out){ out << EXPRESSION; }))
/**
* destringize(str)
* defined for symmetry with stringize
- * *NOTE - this has distinct behavior from boost::lexical_cast<T> regarding
+ * @NOTE - this has distinct behavior from boost::lexical_cast<T> regarding
* leading/trailing whitespace and handling of bad_lexical_cast exceptions
+ * @NOTE - no need for dewstringize(), since passing std::wstring will Do The
+ * Right Thing
*/
-template <typename T>
-T destringize(std::string const & str)
+template <typename T, typename CHARTYPE>
+T destringize(std::basic_string<CHARTYPE> const & str)
{
- T val;
- std::istringstream in(str);
- in >> val;
+ T val;
+ std::basic_istringstream<CHARTYPE> in(str);
+ in >> val;
return val;
}
/**
* destringize_f(str, functor)
*/
-template <typename Functor>
-void destringize_f(std::string const & str, Functor const & f)
+template <typename CHARTYPE, typename Functor>
+void destringize_f(std::basic_string<CHARTYPE> const & str, Functor const & f)
{
- std::istringstream in(str);
+ std::basic_istringstream<CHARTYPE> in(str);
f(in);
}
@@ -143,8 +146,11 @@ void destringize_f(std::string const & str, Functor const & f)
* std::istringstream in(str);
* in >> item1 >> item2 >> item3 ... ;
* @endcode
+ * @NOTE - once we get generic lambdas, we shouldn't need DEWSTRINGIZE() any
+ * more since DESTRINGIZE() should do the right thing with a std::wstring. But
+ * until then, the lambda we pass must accept the right std::basic_istream.
*/
-#define DESTRINGIZE(STR, EXPRESSION) (destringize_f((STR), (boost::phoenix::placeholders::arg1 >> EXPRESSION)))
-
+#define DESTRINGIZE(STR, EXPRESSION) (destringize_f((STR), [&](std::istream& in){in >> EXPRESSION;}))
+#define DEWSTRINGIZE(STR, EXPRESSION) (destringize_f((STR), [&](std::wistream& in){in >> EXPRESSION;}))
#endif /* ! defined(LL_STRINGIZE_H) */
diff --git a/indra/llcommon/tests/wrapllerrs.h b/indra/llcommon/tests/wrapllerrs.h
index 9a4bbbd630d..08fbf19b1cd 100644
--- a/indra/llcommon/tests/wrapllerrs.h
+++ b/indra/llcommon/tests/wrapllerrs.h
@@ -109,6 +109,12 @@ class CaptureLogRecorder : public LLError::Recorder, public boost::noncopyable
mMessages.push_back(message);
}
+ friend inline
+ std::ostream& operator<<(std::ostream& out, const CaptureLogRecorder& log)
+ {
+ return log.streamto(out);
+ }
+
/// Don't assume the message we want is necessarily the LAST log message
/// emitted by the underlying code; search backwards through all messages
/// for the sought string.
@@ -126,7 +132,7 @@ class CaptureLogRecorder : public LLError::Recorder, public boost::noncopyable
throw tut::failure(STRINGIZE("failed to find '" << search
<< "' in captured log messages:\n"
- << boost::ref(*this)));
+ << *this));
}
std::ostream& streamto(std::ostream& out) const
@@ -200,10 +206,4 @@ class CaptureLog : public boost::noncopyable
LLError::RecorderPtr mRecorder;
};
-inline
-std::ostream& operator<<(std::ostream& out, const CaptureLogRecorder& log)
-{
- return log.streamto(out);
-}
-
#endif /* ! defined(LL_WRAPLLERRS_H) */
--
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