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fmt/src/format.cc

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// Formatting library for C++
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/format-inl.h"
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FMT_BEGIN_NAMESPACE
Fix DLL visibility of explicit instantiation "declaration" of internal::basic_data<void> in header format.h and the explicit instantiation "definition" in format.cc (#1134) * Update format.cc As the explicit instantiation *declaration* of `internal::basic_data<void>` in format.h, this explicit instantiation *definition* should mirror FMT_API also. * Mirror visibility of explicit instantiation declaration explicit instantiation declaration of internal::basic_data<void> should mirror visibility of FMT_API * Eliminate `__declspec(dllexport)` designation on extern template internal::basic_data<> when `extern` affected during exporting phase. * Add `FMT_EXTERN_TEMPLATE_API` for designate DLL export `extern template` When exporting DLL, do not designate `__declspec(dllexport)` any template that has any explicit class template declaration a.k.a. `extern template`. Instead, designate `__declspec(dllexport)` at single point where we have explicit class template definition a.k.a. normal instantiation without `extern` Note: this is a c++11 feature. * Delete whole `FMT_USE_EXTERN_TEMPLATES` block and its condition 1. Remove whole `FMT_USE_EXTERN_TEMPLATES` block (trailing `FMT_UDL_TEMPLATE` block) ```` #ifndef FMT_USE_EXTERN_TEMPLATES # ifndef FMT_HEADER_ONLY # define FMT_USE_EXTERN_TEMPLATES \ ((FMT_CLANG_VERSION >= 209 && __cplusplus >= 201103L) || \ (FMT_GCC_VERSION >= 303 && FMT_HAS_GXX_CXX11)) # else # define FMT_USE_EXTERN_TEMPLATES 0 # endif #endif ```` 2. Delete `FMT_USE_EXTERN_TEMPLATES` condition, only condition, that trailing basic_data class template definition. ```` #if FMT_USE_EXTERN_TEMPLATES extern template struct basic_data<void>; #endif ```` 3. Replace `FMT_API` with new `FMT_EXTERN_TEMPLATE_API` added in `core.h` for sake of extern template of `basic_data<void>` * Add `#define FMT_EXTERN extern` only when not `FMT_HEADER_ONLY` * Replace `extern` on basic_data<void> with the `FMT_EXTERN` condition in core.h * replace misspelled if !define() with ifndef
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template struct FMT_API internal::basic_data<void>;
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// Workaround a bug in MSVC2013 that prevents instantiation of grisu_format.
bool (*instantiate_grisu_format)(double, internal::buffer<char>&, int, unsigned,
int&) = internal::grisu_format;
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#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
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template FMT_API internal::locale_ref::locale_ref(const std::locale& loc);
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template FMT_API std::locale internal::locale_ref::get<std::locale>() const;
#endif
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// Explicit instantiations for char.
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template FMT_API char internal::thousands_sep_impl(locale_ref);
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template FMT_API char internal::decimal_point_impl(locale_ref);
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template FMT_API void internal::buffer<char>::append(const char*, const char*);
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template FMT_API void internal::arg_map<format_context>::init(
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const basic_format_args<format_context>& args);
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template FMT_API std::string internal::vformat<char>(
string_view, basic_format_args<format_context>);
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template FMT_API format_context::iterator internal::vformat_to(
internal::buffer<char>&, string_view, basic_format_args<format_context>);
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template FMT_API char* internal::sprintf_format(double, internal::buffer<char>&,
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sprintf_specs);
template FMT_API char* internal::sprintf_format(long double,
internal::buffer<char>&,
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sprintf_specs);
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// Explicit instantiations for wchar_t.
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template FMT_API wchar_t internal::thousands_sep_impl(locale_ref);
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template FMT_API wchar_t internal::decimal_point_impl(locale_ref);
template FMT_API void internal::buffer<wchar_t>::append(const wchar_t*,
const wchar_t*);
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template FMT_API void internal::arg_map<wformat_context>::init(
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const basic_format_args<wformat_context>&);
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template FMT_API std::wstring internal::vformat<wchar_t>(
wstring_view, basic_format_args<wformat_context>);
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FMT_END_NAMESPACE