remove unexecuted statements

This reworks some idiom usage to avoid unexecutable statements.  This is a code
cleanup of locations flagged by the clang parser.  No functionality change is
intended.

5 files changed, 64 insertions, 64 deletions

diff --git a/paludis/environment_implementation.cc b/paludis/environment_implementation.cc
index a47a3dc..fd33168 100644
--- a/paludis/environment_implementation.cc
+++ b/paludis/environment_implementation.cc
@@ -483,6 +483,50 @@ namespace
             return ! _map->find(qpn)->second.second;
         }
     };
+
+    void disambiguate_package_from(const PackageNamePart & p,
+                                   std::list<QualifiedPackageName> & qpns,
+                                   const EnvironmentImplementation * const env,
+                                   const std::shared_ptr<QPNIMap> & result)
+    {
+        using namespace std::placeholders;
+
+        const IsImportant is_important(result);
+        const IsInstalled is_installed(env);
+        const IsInUnimportantRepo is_in_unimportant_repo(result);
+
+        std::remove_copy_if(first_iterator(result->begin()),
+                            first_iterator(result->end()),
+                            std::front_inserter(qpns),
+                            std::bind(std::logical_and<bool>(),
+                                      std::bind(std::not1(is_important), _1),
+                                      std::bind(std::not1(is_installed), _1)));
+        if (! qpns.empty() && next(qpns.begin()) == qpns.end())
+            return;
+
+        qpns.remove_if(std::bind(is_in_unimportant_repo, _1));
+        if (! qpns.empty() && next(qpns.begin()) == qpns.end())
+            return;
+
+        qpns.remove_if(std::bind(std::logical_and<bool>(),
+                       std::bind(is_important, _1),
+                       std::bind(std::not1(is_installed), _1)));
+        if (! qpns.empty() && next(qpns.begin()) == qpns.end())
+            return;
+
+        qpns.remove_if(std::bind(std::logical_and<bool>(),
+                       std::bind(std::not1(is_important), _1),
+                       std::bind(is_installed, _1)));
+        if (! qpns.empty() && next(qpns.begin()) == qpns.end())
+            return;
+
+        auto candidates(std::make_shared<Sequence<std::string> >());
+        std::transform(first_iterator(result->begin()),
+                       first_iterator(result->end()),
+                       candidates->back_inserter(),
+                       &stringify<QualifiedPackageName>);
+        throw AmbiguousPackageNameError(stringify(p), candidates);
+    }
 }
 
 QualifiedPackageName
@@ -523,49 +567,9 @@ EnvironmentImplementation::fetch_unique_qualified_package_name(const PackageName
         throw NoSuchPackageError(stringify(p));
     if (result->size() > 1)
     {
-        using namespace std::placeholders;
-
         std::list<QualifiedPackageName> qpns;
 
-        do
-        {
-            const IsImportant is_important(result);
-            const IsInstalled is_installed(this);
-            const IsInUnimportantRepo is_in_unimportant_repo(result);
-
-            std::remove_copy_if(first_iterator(result->begin()), first_iterator(result->end()),
-                    std::front_inserter(qpns),
-                    std::bind(std::logical_and<bool>(),
-                        std::bind(std::not1(is_important), _1),
-                        std::bind(std::not1(is_installed), _1)));
-
-            if (! qpns.empty() && next(qpns.begin()) == qpns.end())
-                break;
-
-            qpns.remove_if(std::bind(is_in_unimportant_repo, _1));
-
-            if (! qpns.empty() && next(qpns.begin()) == qpns.end())
-                break;
-
-            qpns.remove_if(std::bind(std::logical_and<bool>(),
-                        std::bind(is_important, _1),
-                        std::bind(std::not1(is_installed), _1)));
-
-            if (! qpns.empty() && next(qpns.begin()) == qpns.end())
-                break;
-
-            qpns.remove_if(std::bind(std::logical_and<bool>(),
-                        std::bind(std::not1(is_important), _1),
-                        std::bind(is_installed, _1)));
-
-            if (! qpns.empty() && next(qpns.begin()) == qpns.end())
-                break;
-
-            auto candidates(std::make_shared<Sequence<std::string> >());
-            std::transform(first_iterator(result->begin()), first_iterator(result->end()), candidates->back_inserter(),
-                    &stringify<QualifiedPackageName>);
-            throw AmbiguousPackageNameError(stringify(p), candidates);
-        } while (false);
+        disambiguate_package_from(p, qpns, this, result);
 
         if (! disambiguate)
         {
diff --git a/paludis/fs_merger.cc b/paludis/fs_merger.cc
index 7d30116..8567d16 100644
--- a/paludis/fs_merger.cc
+++ b/paludis/fs_merger.cc
@@ -495,11 +495,10 @@ FSMerger::track_renamed_dir_recursive(const FSPath & dst)
 
             case et_misc:
                 throw FSMergerError("Unexpected 'et_misc' entry found at: " + stringify(*d));
-                continue;
 
             case et_nothing:
             case last_et:
-                ;
+                break;
         }
 
         throw InternalError(PALUDIS_HERE, "Unexpected entry_type '" + stringify(m) + "'");
diff --git a/paludis/merger.cc b/paludis/merger.cc
index bec6257..a1da296 100644
--- a/paludis/merger.cc
+++ b/paludis/merger.cc
@@ -451,11 +451,10 @@ Merger::do_ownership_fixes_recursive(const FSPath & dir)
 
             case et_misc:
                 throw MergerError("Unexpected 'et_misc' entry found at: " + stringify(*d));
-                continue;
 
             case et_nothing:
             case last_et:
-                ;
+                break;
         }
 
         throw InternalError(PALUDIS_HERE, "Unexpected entry_type '" + stringify(m) + "'");
diff --git a/paludis/repositories/e/e_repository.cc b/paludis/repositories/e/e_repository.cc
index 2b7a16a..a430aa3 100644
--- a/paludis/repositories/e/e_repository.cc
+++ b/paludis/repositories/e/e_repository.cc
@@ -491,21 +491,22 @@ namespace
         bool illegal(false);
         try
         {
-            do
-            {
-                FSPath name_file(tree_root);
-                name_file /= "profiles";
-                name_file /= "repo_name";
-
-                if (! name_file.stat().is_regular_file())
-                    break;
+            FSPath name_file(tree_root);
+            name_file /= "profiles";
+            name_file /= "repo_name";
 
-                LineConfigFile f(name_file, { lcfo_disallow_comments, lcfo_disallow_continuations, lcfo_no_skip_blank_lines });
-                if (f.begin() == f.end())
-                    break;
-                return RepositoryName(*f.begin());
-
-            } while (false);
+            if (name_file.stat().is_regular_file())
+            {
+                LineConfigFile f(name_file,
+                                 {
+                                    lcfo_disallow_comments,
+                                    lcfo_disallow_continuations,
+                                    lcfo_no_skip_blank_lines
+                                 });
+
+                if (f.begin() != f.end())
+                    return RepositoryName(*f.begin());
+            }
         }
         catch (const RepositoryNameError &)
         {
diff --git a/paludis/resolver/required_confirmations.cc b/paludis/resolver/required_confirmations.cc
index 66a424f..d8d9343 100644
--- a/paludis/resolver/required_confirmations.cc
+++ b/paludis/resolver/required_confirmations.cc
@@ -28,8 +28,6 @@ using namespace paludis::resolver;
 const std::shared_ptr<RequiredConfirmation>
 RequiredConfirmation::deserialise(Deserialisation & d)
 {
-    std::shared_ptr<RequiredConfirmation> result;
-
     if (d.class_name() == "DowngradeConfirmation")
         return DowngradeConfirmation::deserialise(d);
     else if (d.class_name() == "NotBestConfirmation")
@@ -42,10 +40,9 @@ RequiredConfirmation::deserialise(Deserialisation & d)
         return MaskedConfirmation::deserialise(d);
     else if (d.class_name() == "ChangedChoicesConfirmation")
         return ChangedChoicesConfirmation::deserialise(d);
-    else
-        throw InternalError(PALUDIS_HERE, "unknown class '" + stringify(d.class_name()) + "'");
 
-    return result;
+    throw InternalError(PALUDIS_HERE,
+                        "unknown class '" + stringify(d.class_name()) + "'");
 }
 
 const std::shared_ptr<DowngradeConfirmation>