loplugin:staticconstfield improve warning message

Change-Id: I000dff6b1b6e33e1b2c5aa337c027c1edd7b1003
Reviewed-on: https://gerrit.libreoffice.org/68795Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>

compilerplugins/clang/staticconstfield.cxx

@@ -15,6 +15,9 @@
 #include <unordered_set>
 #include <vector>
 
+/**
+ Look for fields which are const, which can be made static const
+*/
 namespace
 {
 class StaticConstField : public loplugin::FilteringPlugin<StaticConstField>
@@ -56,7 +59,7 @@ void StaticConstField::run()
 
     for (auto const& pair : m_potentials)
     {
-        report(DiagnosticsEngine::Error, "field can be static const", pair.first->getLocation())
+        report(DiagnosticsEngine::Error, "const field can be static", pair.first->getLocation())
             << pair.first->getSourceRange();
         for (CXXCtorInitializer const* init : pair.second.inits)
             if (pair.first->getLocation() != init->getSourceLocation())

compilerplugins/clang/test/staticconstfield.cxx

@@ -15,7 +15,7 @@
 class Class1
 {
     OUString const
-        m_field1; // expected-error {{field can be static const [loplugin:staticconstfield]}}
+        m_field1; // expected-error {{const field can be static [loplugin:staticconstfield]}}
     Class1()
         : m_field1("xxxx")
     // expected-note@-1 {{init here [loplugin:staticconstfield]}}
@@ -27,7 +27,7 @@ class Class1
 class Class2
 {
     OString const
-        m_field2; // expected-error {{field can be static const [loplugin:staticconstfield]}}
+        m_field2; // expected-error {{const field can be static [loplugin:staticconstfield]}}
     Class2()
         : m_field2("yyyy")
     // expected-note@-1 {{init here [loplugin:staticconstfield]}}
@@ -54,12 +54,12 @@ class Class5
         ONE
     };
     float const
-        m_fielda1; // expected-error {{field can be static const [loplugin:staticconstfield]}}
-    int const m_fielda2; // expected-error {{field can be static const [loplugin:staticconstfield]}}
+        m_fielda1; // expected-error {{const field can be static [loplugin:staticconstfield]}}
+    int const m_fielda2; // expected-error {{const field can be static [loplugin:staticconstfield]}}
     bool const
-        m_fielda3; // expected-error {{field can be static const [loplugin:staticconstfield]}}
+        m_fielda3; // expected-error {{const field can be static [loplugin:staticconstfield]}}
     Enum const
-        m_fielda4; // expected-error {{field can be static const [loplugin:staticconstfield]}}
+        m_fielda4; // expected-error {{const field can be static [loplugin:staticconstfield]}}
     Class5()
         : m_fielda1(1.0)
         // expected-note@-1 {{init here [loplugin:staticconstfield]}}