Remove broken MergeDataHashMap optimization

...which apparently didn't take into account that inserting into a
std::unordered_map may invalidate iterators, which now started to cause build
failures like

> [PRP] dictionaries/hu_HU/dialog/hu_HU_de
> warn:sal.osl:25175:25175:sal/osl/unx/thread.cxx:1026: RTL_TEXTENCODING_DONTKNOW -> _ASCII_US
> .../gcc/trunk/inst/include/c++/9.0.1/debug/safe_iterator.h:307:
> In function:
>     __gnu_debug::_Safe_iterator<_Iterator, _Sequence, _Category>::pointer
>     __gnu_debug::_Safe_iterator<_Iterator, _Sequence,
>     _Category>::operator->() const [with _Iterator =
>     std::__detail::_Node_iterator<std::pair<const rtl::OString,
>     std::unique_ptr<MergeData> >, false, true>; _Sequence =
>     std::__debug::unordered_map<rtl::OString, std::unique_ptr<MergeData> >;
>     _Category = std::forward_iterator_tag;
>     __gnu_debug::_Safe_iterator<_Iterator, _Sequence, _Category>::pointer =
>     std::pair<const rtl::OString, std::unique_ptr<MergeData> >*]
>
> Error: attempt to dereference a singular iterator.
>
> Objects involved in the operation:
>     iterator "this" @ 0x0x5a8228 {
>       type = std::__detail::_Node_iterator<std::pair<rtl::OString const, std::unique_ptr<MergeData, std::default_delete<MergeData> > >, false, true> (mutable iterator);
>       state = singular;
>       references sequence with type 'std::__debug::unordered_map<rtl::OString, std::unique_ptr<MergeData, std::default_delete<MergeData> >, std::hash<rtl::OString>, std::equal_to<rtl::OString>, std::allocator<std::pair<rtl::OString const, std::unique_ptr<MergeData, std::default_delete<MergeData> > > > >' @ 0x0x5a81c8
>     }
> /bin/sh: line 1: 25175 Aborted                 (core dumped) LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"$I/program:$I/program" $W/LinkTarget/Executable/propex -i $S/dictionaries/hu_HU/dialog/hu_HU_en_US.properties -l de -m ${MERGEINPUT} -o $W/PropertiesTranslateTarget/dictionaries/hu_HU/dialog/hu_HU_de.properties
> make[1]: *** [.../solenv/gbuild/Dictionary.mk:88: .../workdir/PropertiesTranslateTarget/dictionaries/hu_HU/dialog/hu_HU_de.properties] Error 134

with trunk libstdc++ in debug mode.

Both classes MergeData and MergeDataHashMap became redundant.

Change-Id: I771548a6155e14037d84acfd74cd13566a26a8d7
Reviewed-on: https://gerrit.libreoffice.org/69395
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

1 files changed, 2 insertions, 70 deletions

diff --git a/l10ntools/inc/export.hxx b/l10ntools/inc/export.hxx
index 658faaf0450e..b6d958695b8d 100644
--- a/l10ntools/inc/export.hxx
+++ b/l10ntools/inc/export.hxx
@@ -119,74 +119,6 @@ public:
 
 };
 
-
-// class MergeDataHashMap
-
-
-class MergeData;
-
-/** Container for MergeData
-
-  This class is an HashMap with a hidden insertion
-  order. The class can used just like a simple
-  HashMap, but good to know that it's use is
-  more effective if the accessing(find) order
-  match with the insertion order.
-
-  In the most case, this match is good.
-  (e.g. reading PO files of different languages,
-  executables merging)
-*/
-class MergeDataHashMap
-{
-    private:
-        typedef std::unordered_map<OString, std::unique_ptr<MergeData>> HashMap_t;
-
-    public:
-        MergeDataHashMap()
-            : bFirstSearch(true)
-            , aLastInsertion(m_aHashMap.end())
-            , aLastFound(m_aHashMap.end())
-            , aFirstInOrder(m_aHashMap.end())
-        {
-        }
-
-        typedef HashMap_t::iterator iterator;
-        typedef HashMap_t::const_iterator const_iterator;
-
-        std::pair<iterator,bool> insert(const OString& rKey, std::unique_ptr<MergeData> pMergeData);
-        iterator const & find(const OString& rKey);
-
-        iterator end() {return m_aHashMap.end();}
-
-    private:
-        bool bFirstSearch;
-        HashMap_t m_aHashMap;
-        iterator aLastInsertion;
-        iterator aLastFound;
-        iterator aFirstInOrder;
-};
-
-
-// class MergeData
-
-
-/// Purpose: holds information of data to merge (one resource)
-class MergeData
-{
-    friend class MergeDataHashMap;
-
-    std::unique_ptr<MergeEntrys> pMergeEntrys;
-    MergeDataHashMap::iterator m_aNextData;
-
-public:
-    MergeData();
-    ~MergeData();
-    MergeEntrys* GetMergeEntries() { return pMergeEntrys.get();}
-
-};
-
-
 // class MergeDataFile
 
 
@@ -194,10 +126,10 @@ public:
 class MergeDataFile
 {
     private:
-        MergeDataHashMap aMap;
+        std::unordered_map<OString, std::unique_ptr<MergeEntrys>> aMap;
         std::set<OString> aLanguageSet;
 
-        MergeData *GetMergeData( ResData *pResData , bool bCaseSensitive = false );
+        MergeEntrys *GetMergeData( ResData *pResData , bool bCaseSensitive = false );
         void InsertEntry(const OString &rTYP, const OString &rGID,
             const OString &rLID, const OString &nLang,
             const OString &rTEXT, const OString &rQHTEXT,