Run clang-tidy’s modernize-pass-by-value pass.

This avoids having to pass variables by reference before copying them
when calling a constructor.

6 files changed, 28 insertions, 25 deletions

diff --git a/src/util/ege-tags.cpp b/src/util/ege-tags.cpp
index 3b9f68df8..f3955129a 100644
--- a/src/util/ege-tags.cpp
+++ b/src/util/ege-tags.cpp
@@ -47,6 +47,7 @@
 #include <set>
 #include <algorithm>
 #include <functional>
+#include <utility>
 
 #include "ege-tags.h"
 
@@ -55,9 +56,9 @@
 namespace ege
 {
 
-Label::Label(std::string const& lang, std::string const& value) :
-    lang(lang),
-    value(value)
+Label::Label(std::string  lang, std::string  value) :
+    lang(std::move(lang)),
+    value(std::move(value))
 {
 }
 
@@ -69,8 +70,8 @@ Label::~Label()
 Tag::~Tag()
 = default;
 
-Tag::Tag(std::string const& key) :
-    key(key)
+Tag::Tag(std::string  key) :
+    key(std::move(key))
 {
 }
 
diff --git a/src/util/ege-tags.h b/src/util/ege-tags.h
index 7280e1f6a..a481c97e1 100644
--- a/src/util/ege-tags.h
+++ b/src/util/ege-tags.h
@@ -54,7 +54,7 @@ class Label
 {
 public:
     Label();
-    Label(std::string const& lang, std::string const& value);
+    Label(std::string  lang, std::string  value);
     ~Label();
 
     std::string lang;
@@ -65,7 +65,7 @@ class Tag
 {
 public:
     Tag();
-    Tag(std::string const& key);
+    Tag(std::string  key);
     ~Tag();
 
     std::string key;
diff --git a/src/util/units.cpp b/src/util/units.cpp
index ffa2681c6..340d3f697 100644
--- a/src/util/units.cpp
+++ b/src/util/units.cpp
@@ -17,6 +17,7 @@
 #include <cerrno>
 #include <iomanip>
 #include <iostream>
+#include <utility>
 #include <glib.h>
 #include <glibmm/regex.h>
 #include <glibmm/fileutils.h>
@@ -164,16 +165,16 @@ Unit::Unit() :
 
 Unit::Unit(UnitType type,
            double factor,
-           Glib::ustring const &name,
-           Glib::ustring const &name_plural,
-           Glib::ustring const &abbr,
-           Glib::ustring const &description)
+           Glib::ustring name,
+           Glib::ustring name_plural,
+           Glib::ustring abbr,
+           Glib::ustring description)
     : type(type)
     , factor(factor)
-    , name(name)
-    , name_plural(name_plural)
-    , abbr(abbr)
-    , description(description)
+    , name(std::move(name))
+    , name_plural(std::move(name_plural))
+    , abbr(std::move(abbr))
+    , description(std::move(description))
 {
     g_return_if_fail(factor <= 0);
 }
diff --git a/src/util/units.h b/src/util/units.h
index fa70058ba..e4530d0c3 100644
--- a/src/util/units.h
+++ b/src/util/units.h
@@ -43,10 +43,10 @@ public:
     Unit();
     Unit(UnitType type,
          double factor,
-         Glib::ustring const &name,
-         Glib::ustring const &name_plural,
-         Glib::ustring const &abbr,
-         Glib::ustring const &description);
+         Glib::ustring name,
+         Glib::ustring name_plural,
+         Glib::ustring abbr,
+         Glib::ustring description);
 
     void clear();
 
diff --git a/src/util/ziptool.cpp b/src/util/ziptool.cpp
index fe64bad6f..4408c3daa 100644
--- a/src/util/ziptool.cpp
+++ b/src/util/ziptool.cpp
@@ -36,6 +36,7 @@
 #include <ctime>
 
 #include <string>
+#include <utility>
 
 #include "ziptool.h"
 
@@ -1903,11 +1904,11 @@ ZipEntry::ZipEntry() :
 /**
  *
  */
-ZipEntry::ZipEntry(const std::string &fileNameArg,
-                   const std::string &commentArg) :
+ZipEntry::ZipEntry(std::string fileNameArg,
+                   std::string commentArg) :
     crc (0L),
-    fileName (fileNameArg),
-    comment (commentArg),
+    fileName (std::move(fileNameArg)),
+    comment (std::move(commentArg)),
     compressionMethod (8),
     compressedData (),
     uncompressedData (),
diff --git a/src/util/ziptool.h b/src/util/ziptool.h
index dbae8ac60..bcaec11f6 100644
--- a/src/util/ziptool.h
+++ b/src/util/ziptool.h
@@ -251,8 +251,8 @@ public:
     /**
      *
      */
-    ZipEntry(const std::string &fileName,
-             const std::string &comment);
+    ZipEntry(std::string fileName,
+             std::string comment);
 
     /**
      *