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