From 6ad6bc005c33dbf677c2a413ff435b7219edbc4e Mon Sep 17 00:00:00 2001
From: Dimitrij Mijoski <dmjpp@hotmail.com>
Date: Fri, 20 Apr 2018 13:42:07 +0200
Subject: [PATCH 1/4] Implement boost hash for string_view

---
 .travis.yml                           | 1 +
 appveyor.yml                          | 1 +
 include/boost/utility/string_view.hpp | 5 +++++
 test/string_view_test1.cpp            | 9 +++++++++
 4 files changed, 16 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index ab048db..7448bf9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -192,6 +192,7 @@ install:
   - git submodule update --init libs/static_assert
   - git submodule update --init libs/throw_exception
   - git submodule update --init libs/type_traits
+  - git submodule update --init libs/container_hash
   - cp -r $TRAVIS_BUILD_DIR/* libs/utility
   - ./bootstrap.sh
   - ./b2 headers
diff --git a/appveyor.yml b/appveyor.yml
index 77623f0..cb0cf9f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -36,6 +36,7 @@ install:
   - git submodule update --init libs/static_assert
   - git submodule update --init libs/throw_exception
   - git submodule update --init libs/type_traits
+  - git submodule update --init libs/container_hash
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility
   - cmd /c bootstrap
   - b2 -d0 headers
diff --git a/include/boost/utility/string_view.hpp b/include/boost/utility/string_view.hpp
index 44efda9..0faa8f0 100644
--- a/include/boost/utility/string_view.hpp
+++ b/include/boost/utility/string_view.hpp
@@ -21,6 +21,7 @@
 #include <boost/detail/workaround.hpp>
 #include <boost/utility/string_view_fwd.hpp>
 #include <boost/throw_exception.hpp>
+#include <boost/container_hash/hash.hpp>
 
 #include <cstddef>
 #include <stdexcept>
@@ -690,6 +691,10 @@ namespace boost {
         }
 #endif
 
+    template <class charT, class traits>
+    std::size_t hash_value(basic_string_view<charT, traits> s) {
+        return boost::hash_range(s.begin(), s.end());
+        }
 }
 
 #if 0
diff --git a/test/string_view_test1.cpp b/test/string_view_test1.cpp
index 9b70a7e..90aec4e 100644
--- a/test/string_view_test1.cpp
+++ b/test/string_view_test1.cpp
@@ -85,6 +85,14 @@ void test_remove ( const std::string &str ) {
       }
     }
 
+void test_hash(const std::string& str) {
+    string_view ref = str;
+    BOOST_TEST(boost::hash_value(ref) == boost::hash_value(str));
+    boost::hash<std::string> hstr;
+    boost::hash<string_view> hsv;
+    BOOST_TEST(hsv(ref) == hstr(str));
+    }
+
 const char *test_strings [] = {
     "",
     "1",
@@ -102,6 +110,7 @@ int main()
         test_substr ( *p );
         test_remove ( *p );
         null_tests ( *p );
+        test_hash( *p );
 
         p++;
         }

From 473be2e4c1987976d3e00617fa0caa24ca67f554 Mon Sep 17 00:00:00 2001
From: Dimitrij Mijoski <dmjpp@hotmail.com>
Date: Fri, 20 Apr 2018 13:58:12 +0200
Subject: [PATCH 2/4] Boost integer is dependency of boost hash.

---
 .travis.yml  | 1 +
 appveyor.yml | 1 +
 2 files changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 7448bf9..1c6dbdb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -193,6 +193,7 @@ install:
   - git submodule update --init libs/throw_exception
   - git submodule update --init libs/type_traits
   - git submodule update --init libs/container_hash
+  - git submodule update --init libs/integer
   - cp -r $TRAVIS_BUILD_DIR/* libs/utility
   - ./bootstrap.sh
   - ./b2 headers
diff --git a/appveyor.yml b/appveyor.yml
index cb0cf9f..c81a2ac 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -37,6 +37,7 @@ install:
   - git submodule update --init libs/throw_exception
   - git submodule update --init libs/type_traits
   - git submodule update --init libs/container_hash
+  - git submodule update --init libs/integer
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility
   - cmd /c bootstrap
   - b2 -d0 headers

From 15cfa44937f5243f1b9d97d2ee4ad6979a42c1d3 Mon Sep 17 00:00:00 2001
From: Dimitrij Mijoski <dmjpp@hotmail.com>
Date: Fri, 20 Apr 2018 14:07:33 +0200
Subject: [PATCH 3/4] Boost detail is dependency of boost hash.

---
 .travis.yml  | 1 +
 appveyor.yml | 1 +
 2 files changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 1c6dbdb..1e0f8fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -194,6 +194,7 @@ install:
   - git submodule update --init libs/type_traits
   - git submodule update --init libs/container_hash
   - git submodule update --init libs/integer
+  - git submodule update --init libs/detail
   - cp -r $TRAVIS_BUILD_DIR/* libs/utility
   - ./bootstrap.sh
   - ./b2 headers
diff --git a/appveyor.yml b/appveyor.yml
index c81a2ac..b63ff9f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -38,6 +38,7 @@ install:
   - git submodule update --init libs/type_traits
   - git submodule update --init libs/container_hash
   - git submodule update --init libs/integer
+  - git submodule update --init libs/detail
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility
   - cmd /c bootstrap
   - b2 -d0 headers

From e2d115db9772ee294d94d8970bea0189de70a81f Mon Sep 17 00:00:00 2001
From: Dimitrij Mijoski <dmjpp@hotmail.com>
Date: Fri, 20 Apr 2018 23:18:31 +0200
Subject: [PATCH 4/4] Use hash_fwd.hpp in string_view for more lightweight
 dependencies.

---
 include/boost/utility/string_view.hpp | 2 +-
 test/string_view_test1.cpp            | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/boost/utility/string_view.hpp b/include/boost/utility/string_view.hpp
index 0faa8f0..11aa801 100644
--- a/include/boost/utility/string_view.hpp
+++ b/include/boost/utility/string_view.hpp
@@ -21,7 +21,7 @@
 #include <boost/detail/workaround.hpp>
 #include <boost/utility/string_view_fwd.hpp>
 #include <boost/throw_exception.hpp>
-#include <boost/container_hash/hash.hpp>
+#include <boost/container_hash/hash_fwd.hpp>
 
 #include <cstddef>
 #include <stdexcept>
diff --git a/test/string_view_test1.cpp b/test/string_view_test1.cpp
index 90aec4e..c35bbfa 100644
--- a/test/string_view_test1.cpp
+++ b/test/string_view_test1.cpp
@@ -12,6 +12,7 @@
 #include <string>
 
 #include <boost/utility/string_view.hpp>
+#include <boost/container_hash/hash.hpp>
 
 #include <boost/core/lightweight_test.hpp>