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- // This file is automatically generated from src/glog/stl_logging.h.in
- // using src/windows/preprocess.sh.
- // DO NOT EDIT!
- // Copyright (c) 2003, Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // Stream output operators for STL containers; to be used for logging *only*.
- // Inclusion of this file lets you do:
- //
- // list<string> x;
- // LOG(INFO) << "data: " << x;
- // vector<int> v1, v2;
- // CHECK_EQ(v1, v2);
- //
- // If you want to use this header file with hash_compare maps or slist, you
- // need to define macros before including this file:
- //
- // - GLOG_STL_LOGGING_FOR_UNORDERED - <unordered_map> and <unordered_set>
- // - GLOG_STL_LOGGING_FOR_TR1_UNORDERED - <tr1/unordered_(map|set)>
- // - GLOG_STL_LOGGING_FOR_EXT_HASH - <ext/hash_(map|set)>
- // - GLOG_STL_LOGGING_FOR_EXT_SLIST - <ext/slist>
- //
- #ifndef UTIL_GTL_STL_LOGGING_INL_H_
- #define UTIL_GTL_STL_LOGGING_INL_H_
- #if !1
- # error We do not support stl_logging for this compiler
- #endif
- #include <deque>
- #include <list>
- #include <map>
- #include <ostream>
- #include <set>
- #include <utility>
- #include <vector>
- #ifdef GLOG_STL_LOGGING_FOR_UNORDERED
- # include <unordered_map>
- # include <unordered_set>
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED
- # include <tr1/unordered_map>
- # include <tr1/unordered_set>
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH
- # include <ext/hash_set>
- # include <ext/hash_map>
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_EXT_SLIST
- # include <ext/slist>
- #endif
- // Forward declare these two, and define them after all the container streams
- // operators so that we can recurse from pair -> container -> container -> pair
- // properly.
- template<class First, class Second>
- std::ostream& operator<<(std::ostream& out, const std::pair<First, Second>& p);
- namespace google {
- template<class Iter>
- void PrintSequence(std::ostream& out, Iter begin, Iter end);
- }
- #define OUTPUT_TWO_ARG_CONTAINER(Sequence) \
- template<class T1, class T2> \
- inline std::ostream& operator<<(std::ostream& out, \
- const Sequence<T1, T2>& seq) { \
- google::PrintSequence(out, seq.begin(), seq.end()); \
- return out; \
- }
- OUTPUT_TWO_ARG_CONTAINER(std::vector)
- OUTPUT_TWO_ARG_CONTAINER(std::deque)
- OUTPUT_TWO_ARG_CONTAINER(std::list)
- #ifdef GLOG_STL_LOGGING_FOR_EXT_SLIST
- OUTPUT_TWO_ARG_CONTAINER(__gnu_cxx::slist)
- #endif
- #undef OUTPUT_TWO_ARG_CONTAINER
- #define OUTPUT_THREE_ARG_CONTAINER(Sequence) \
- template<class T1, class T2, class T3> \
- inline std::ostream& operator<<(std::ostream& out, \
- const Sequence<T1, T2, T3>& seq) { \
- google::PrintSequence(out, seq.begin(), seq.end()); \
- return out; \
- }
- OUTPUT_THREE_ARG_CONTAINER(std::set)
- OUTPUT_THREE_ARG_CONTAINER(std::multiset)
- #undef OUTPUT_THREE_ARG_CONTAINER
- #define OUTPUT_FOUR_ARG_CONTAINER(Sequence) \
- template<class T1, class T2, class T3, class T4> \
- inline std::ostream& operator<<(std::ostream& out, \
- const Sequence<T1, T2, T3, T4>& seq) { \
- google::PrintSequence(out, seq.begin(), seq.end()); \
- return out; \
- }
- OUTPUT_FOUR_ARG_CONTAINER(std::map)
- OUTPUT_FOUR_ARG_CONTAINER(std::multimap)
- #ifdef GLOG_STL_LOGGING_FOR_UNORDERED
- OUTPUT_FOUR_ARG_CONTAINER(std::unordered_set)
- OUTPUT_FOUR_ARG_CONTAINER(std::unordered_multiset)
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED
- OUTPUT_FOUR_ARG_CONTAINER(std::tr1::unordered_set)
- OUTPUT_FOUR_ARG_CONTAINER(std::tr1::unordered_multiset)
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH
- OUTPUT_FOUR_ARG_CONTAINER(__gnu_cxx::hash_set)
- OUTPUT_FOUR_ARG_CONTAINER(__gnu_cxx::hash_multiset)
- #endif
- #undef OUTPUT_FOUR_ARG_CONTAINER
- #define OUTPUT_FIVE_ARG_CONTAINER(Sequence) \
- template<class T1, class T2, class T3, class T4, class T5> \
- inline std::ostream& operator<<(std::ostream& out, \
- const Sequence<T1, T2, T3, T4, T5>& seq) { \
- google::PrintSequence(out, seq.begin(), seq.end()); \
- return out; \
- }
- #ifdef GLOG_STL_LOGGING_FOR_UNORDERED
- OUTPUT_FIVE_ARG_CONTAINER(std::unordered_map)
- OUTPUT_FIVE_ARG_CONTAINER(std::unordered_multimap)
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_TR1_UNORDERED
- OUTPUT_FIVE_ARG_CONTAINER(std::tr1::unordered_map)
- OUTPUT_FIVE_ARG_CONTAINER(std::tr1::unordered_multimap)
- #endif
- #ifdef GLOG_STL_LOGGING_FOR_EXT_HASH
- OUTPUT_FIVE_ARG_CONTAINER(__gnu_cxx::hash_map)
- OUTPUT_FIVE_ARG_CONTAINER(__gnu_cxx::hash_multimap)
- #endif
- #undef OUTPUT_FIVE_ARG_CONTAINER
- template<class First, class Second>
- inline std::ostream& operator<<(std::ostream& out,
- const std::pair<First, Second>& p) {
- out << '(' << p.first << ", " << p.second << ')';
- return out;
- }
- namespace google {
- template<class Iter>
- inline void PrintSequence(std::ostream& out, Iter begin, Iter end) {
- // Output at most 100 elements -- appropriate if used for logging.
- for (int i = 0; begin != end && i < 100; ++i, ++begin) {
- if (i > 0) out << ' ';
- out << *begin;
- }
- if (begin != end) {
- out << " ...";
- }
- }
- }
- // Note that this is technically undefined behavior! We are adding things into
- // the std namespace for a reason though -- we are providing new operations on
- // types which are themselves defined with this namespace. Without this, these
- // operator overloads cannot be found via ADL. If these definitions are not
- // found via ADL, they must be #included before they're used, which requires
- // this header to be included before apparently independent other headers.
- //
- // For example, base/logging.h defines various template functions to implement
- // CHECK_EQ(x, y) and stream x and y into the log in the event the check fails.
- // It does so via the function template MakeCheckOpValueString:
- // template<class T>
- // void MakeCheckOpValueString(strstream* ss, const T& v) {
- // (*ss) << v;
- // }
- // Because 'glog/logging.h' is included before 'glog/stl_logging.h',
- // subsequent CHECK_EQ(v1, v2) for vector<...> typed variable v1 and v2 can only
- // find these operator definitions via ADL.
- //
- // Even this solution has problems -- it may pull unintended operators into the
- // namespace as well, allowing them to also be found via ADL, and creating code
- // that only works with a particular order of includes. Long term, we need to
- // move all of the *definitions* into namespace std, bet we need to ensure no
- // one references them first. This lets us take that step. We cannot define them
- // in both because that would create ambiguous overloads when both are found.
- namespace std { using ::operator<<; }
- #endif // UTIL_GTL_STL_LOGGING_INL_H_
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