[DEV] add v1.66.0

libs/scope_exit/example/Jamfile.v2

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+
+# Copyright (C) 2006-2009, 2012 Alexander Nasonov
+# Copyright (C) 2012 Lorenzo Caminiti
+# Distributed under the Boost Software License, Version 1.0
+# (see accompanying file LICENSE_1_0.txt or a copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+# Home at http://www.boost.org/libs/scope_exit
+
+import testing ;
+
+# Sun does not automatically detect type-of emulation mode (force it).
+project : requirements <toolset>sun:<define>BOOST_TYPEOF_EMULATION ;
+
+run try_catch.cpp ;
+run try_catch_seq.cpp ;
+run try_catch_seq_nova.cpp ;
+
+run scope_guard.cpp ;
+run scope_guard_seq.cpp ;
+run scope_guard_seq_nova.cpp ;
+
+run world_cxx11_lambda.cpp ;
+

libs/scope_exit/example/nova.hpp

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+
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#ifndef NOVA_HPP_
+#define NOVA_HPP_
+
+#include <boost/config.hpp>
+
+// WARNING: This file must be included first in each compilation unit.
+
+// Force no variadic macros but avoiding macro redefinition warning/error.
+#ifndef BOOST_NO_CXX11_VARIADIC_MACROS
+#   define BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+
+#endif // #include guard
+

libs/scope_exit/example/scope_guard.cpp

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+
+// Copyright (C) 2006-2009, 2012 Alexander Nasonov
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include <boost/config.hpp>
+#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
+#   error "variadic macros required"
+#else
+
+#include <boost/scope_exit.hpp>
+#include <boost/typeof/std/string.hpp>
+#include <boost/typeof/std/map.hpp>
+#include <map>
+#include <string>
+#include <utility>
+
+int main(void) {
+    //[scope_guard_decl
+    bool commit = false;
+    std::string currency("EUR");
+    double rate = 1.3326;
+    std::map<std::string, double> rates;
+    bool currency_rate_inserted =
+            rates.insert(std::make_pair(currency, rate)).second;
+    // Transaction...
+    //]
+
+    //[scope_guard_exit
+    BOOST_SCOPE_EXIT(currency_rate_inserted, &commit, &rates, &currency) {
+        if(currency_rate_inserted && !commit) rates.erase(currency);
+    } BOOST_SCOPE_EXIT_END
+
+    // ...
+
+    commit = true;
+    //]
+    
+    return 0;
+}
+
+#endif // variadic macros
+

libs/scope_exit/example/scope_guard_seq.cpp

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+
+// Copyright (C) 2006-2009, 2012 Alexander Nasonov
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include <boost/scope_exit.hpp>
+#include <boost/typeof/std/string.hpp>
+#include <boost/typeof/std/map.hpp>
+#include <map>
+#include <string>
+#include <utility>
+
+int main(void) {
+    bool commit = false;
+    std::string currency("EUR");
+    double rate = 1.3326;
+    std::map<std::string, double> rates;
+    bool currency_rate_inserted =
+            rates.insert(std::make_pair(currency, rate)).second;
+
+    BOOST_SCOPE_EXIT( (currency_rate_inserted) (&commit) (&rates)
+            (&currency) ) {
+        if(currency_rate_inserted && !commit) rates.erase(currency);
+    } BOOST_SCOPE_EXIT_END
+
+    // ...
+
+    commit = true;
+
+    return 0;
+}
+

libs/scope_exit/example/scope_guard_seq_nova.cpp

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+
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include "nova.hpp"
+#include "scope_guard_seq.cpp"
+

libs/scope_exit/example/try_catch.cpp

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+
+// Copyright (C) 2006-2009, 2012 Alexander Nasonov
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include <boost/config.hpp>
+#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
+#   error "variadic macros required"
+#else
+
+#include <boost/scope_exit.hpp>
+#include <boost/typeof/typeof.hpp>
+#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
+#include <iostream>
+
+struct file {
+    file(void) : open_(false) {}
+    file(char const* path) : open_(false) { open(path); }
+
+    void open(char const* path) { open_ = true; }
+    void close(void) { open_ = false; }
+    bool is_open(void) const { return open_; }
+
+private:
+    bool open_;
+};
+BOOST_TYPEOF_REGISTER_TYPE(file)
+
+void bad(void) {
+    //[try_catch_bad
+    file passwd;
+    try {
+        passwd.open("/etc/passwd");
+        // ...
+        passwd.close();
+    } catch(...) {
+        std::clog << "could not get user info" << std::endl;
+        if(passwd.is_open()) passwd.close();
+        throw;
+    }
+    //]
+}
+
+void good(void) {
+    //[try_catch_good
+    try {
+        file passwd("/etc/passwd");
+        BOOST_SCOPE_EXIT(&passwd) {
+            passwd.close();
+        } BOOST_SCOPE_EXIT_END
+    } catch(...) {
+        std::clog << "could not get user info" << std::endl;
+        throw;
+    }
+    //]
+}
+
+int main(void) {
+    bad();
+    good();
+    return 0;
+}
+
+#endif // variadic macros
+

libs/scope_exit/example/try_catch_seq.cpp

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+
+// Copyright (C) 2006-2009, 2012 Alexander Nasonov
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include <boost/scope_exit.hpp>
+#include <boost/typeof/typeof.hpp>
+#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
+#include <iostream>
+
+struct file {
+    file(void) : open_(false) {}
+    file(char const* path) : open_(false) { open(path); }
+
+    void open(char const* path) { open_ = true; }
+    void close(void) { open_ = false; }
+    bool is_open(void) const { return open_; }
+
+private:
+    bool open_;
+};
+BOOST_TYPEOF_REGISTER_TYPE(file)
+
+void bad(void) {
+    //[try_catch_bad_seq
+    file passwd;
+    try {
+        passwd.open("/etc/passwd");
+        // ...
+        passwd.close();
+    } catch(...) {
+        std::clog << "could not get user info" << std::endl;
+        if(passwd.is_open()) passwd.close();
+        throw;
+    }
+    //]
+}
+
+void good(void) {
+    //[try_catch_good_seq
+    try {
+        file passwd("/etc/passwd");
+        BOOST_SCOPE_EXIT( (&passwd) ) {
+            passwd.close();
+        } BOOST_SCOPE_EXIT_END
+    } catch(...) {
+        std::clog << "could not get user info" << std::endl;
+        throw;
+    }
+    //]
+}
+
+int main(void) {
+    bad();
+    good();
+    return 0;
+}
+

libs/scope_exit/example/try_catch_seq_nova.cpp

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+
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include "nova.hpp"
+#include "try_catch_seq.cpp"
+

libs/scope_exit/example/world_cxx11_lambda.cpp

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+
+// Copyright (C) 2006-2009, 2012 Alexander Nasonov
+// Copyright (C) 2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/scope_exit
+
+#include <boost/config.hpp>
+#ifdef BOOST_NO_CXX11_LAMBDAS
+#   error "lambda functions required"
+#else
+
+#include <boost/detail/lightweight_test.hpp>
+#include <vector>
+
+struct person {};
+
+struct world {
+    void add_person(person const& a_person);
+    std::vector<person> persons_;
+};
+
+//[world_cxx11_lambda
+#include <functional>
+
+struct scope_exit {
+    scope_exit(std::function<void (void)> f) : f_(f) {}
+    ~scope_exit(void) { f_(); }
+private:
+    std::function<void (void)> f_;
+};
+
+void world::add_person(person const& a_person) {
+    bool commit = false;
+
+    persons_.push_back(a_person);
+    scope_exit on_exit1([&commit, this](void) { // Use C++11 lambda.
+        if(!commit) persons_.pop_back(); // `persons_` via captured `this`.
+    });
+
+    // ...
+
+    commit = true;
+}
+//]
+
+int main(void) {
+    world w;
+    person p;
+    w.add_person(p);
+    BOOST_TEST(w.persons_.size() == 1);
+    return boost::report_errors();
+}
+
+#endif // LAMBDAS
+