compilerplugins/clang/store/removeforwardstringdecl.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * Based on LLVM/Clang.
   6  *
   7  * This file is distributed under the University of Illinois Open Source
   8  * License. See LICENSE.TXT for details.
   9  *
  10  */
  11
  12 #include "removeforwardstringdecl.hxx"
  13
  14 /*
  15 This is a rewriter.
  16
  17 Remove all forward declarations of rtl strings. I.e. 'namespace rtl { class OUString; }' etc.
  18 */
  19
  20 namespace loplugin
  21 {
  22
  23 RemoveForwardStringDecl::RemoveForwardStringDecl( CompilerInstance& compiler, Rewriter& rewriter )
  24     : FilteringRewritePlugin( compiler, rewriter )
  25     {
  26     }
  27
  28 void RemoveForwardStringDecl::run()
  29     {
  30     TraverseDecl( compiler.getASTContext().getTranslationUnitDecl());
  31     }
  32
  33 bool RemoveForwardStringDecl::VisitNamespaceDecl( const NamespaceDecl* declaration )
  34     {
  35     if( ignoreLocation( declaration ))
  36         return true;
  37     if( declaration->getQualifiedNameAsString() != "rtl" )
  38         return true;
  39     bool canRemove = true;
  40     for( NamespaceDecl::decl_iterator it = declaration->decls_begin();
  41          it != declaration->decls_end();
  42          ++it )
  43         {
  44         if( *it != NULL )
  45             {
  46             if( !tryRemoveStringForwardDecl( *it ))
  47                 canRemove = false;
  48             }
  49         }
  50     if( canRemove ) // contained only forward decls that we removed
  51         removeText( declaration->getSourceRange(), RemoveLineIfEmpty );
  52     return true;
  53     }
  54
  55 bool RemoveForwardStringDecl::tryRemoveStringForwardDecl( const Decl* decl )
  56     {
  57     const CXXRecordDecl* classdecl = dyn_cast< CXXRecordDecl >( decl );
  58     if( classdecl == NULL )
  59         return false;
  60     if( !classdecl->isFreeStanding() || classdecl->isCompleteDefinition())
  61         return false; // not a simple forward declaration
  62     if( classdecl->getName() == "OString" || classdecl->getName() == "OUString"
  63         || classdecl->getName() == "OStringBuffer" || classdecl->getName() == "OUStringBuffer"
  64         || classdecl->getName() == "OStringHash" || classdecl->getName() == "OUStringHash"
  65         || classdecl->getName() == "OStringLiteral" || classdecl->getName() == "OUStringLiteral" )
  66         {
  67         removeText( SourceRange( classdecl->getOuterLocStart(), classdecl->getLocEnd()),
  68             RemoveLineIfEmpty | RemoveWholeStatement );
  69         return true;
  70         }
  71     return false;
  72     }
  73
  74 static Plugin::Registration< RemoveForwardStringDecl > X( "removeforwardstringdecl" );
  75
  76 } // namespace
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */