Revert "Optimize getNamespaceId (xmlreader)"

This reverts commit def00961243da0662f394bdf58b1157cfd45dfab.

Finally after other tests, it doesn't improve perfs

Change-Id: Icbaaf751181069dd36dba0c676a4c9a2a6c8a9f3
Reviewed-on: https://gerrit.libreoffice.org/80565
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

4 files changed, 0 insertions, 31 deletions

diff --git a/include/xmlreader/span.hxx b/include/xmlreader/span.hxx
index a3da663e5a71..bc2dbaacbe56 100644
--- a/include/xmlreader/span.hxx
+++ b/include/xmlreader/span.hxx
@@ -24,7 +24,6 @@
 
 #include <cstddef>
 #include <cstring>
-#include <functional>
 
 #include <sal/types.h>
 #include <xmlreader/detail/xmlreaderdllapi.hxx>
@@ -77,19 +76,6 @@ struct SAL_WARN_UNUSED OOO_DLLPUBLIC_XMLREADER Span {
     }
 
     rtl::OUString convertFromUtf8() const;
-
-    std::size_t hashCode() const;
-};
-
-}
-
-namespace std {
-
-template<>
-struct hash<::xmlreader::Span>
-{
-    std::size_t operator()(::xmlreader::Span const & s) const
-    { return s.hashCode(); }
 };
 
 }
diff --git a/include/xmlreader/xmlreader.hxx b/include/xmlreader/xmlreader.hxx
index 99e889ee0d59..4e9f1347a7e5 100644
--- a/include/xmlreader/xmlreader.hxx
+++ b/include/xmlreader/xmlreader.hxx
@@ -23,7 +23,6 @@
 #include <sal/config.h>
 
 #include <stack>
-#include <unordered_map>
 #include <vector>
 
 #include <osl/file.h>
@@ -173,7 +172,6 @@ private:
     void * fileAddress_;
     NamespaceIris namespaceIris_;
     NamespaceList namespaces_;
-    mutable std::unordered_map<Span, int> cacheNSIds_;
     ElementStack elements_;
     char const * pos_;
     char const * end_;
diff --git a/xmlreader/source/span.cxx b/xmlreader/source/span.cxx
index 300c0a2e99b3..29433c561fb7 100644
--- a/xmlreader/source/span.cxx
+++ b/xmlreader/source/span.cxx
@@ -46,10 +46,6 @@ OUString Span::convertFromUtf8() const {
     return OUString(s, SAL_NO_ACQUIRE);
 }
 
-std::size_t Span::hashCode() const {
-    return rtl_str_hashCode_WithLength(begin, length);
-}
-
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/xmlreader/source/xmlreader.cxx b/xmlreader/source/xmlreader.cxx
index 918f42a2e1b2..85027b66ee99 100644
--- a/xmlreader/source/xmlreader.cxx
+++ b/xmlreader/source/xmlreader.cxx
@@ -182,19 +182,11 @@ Span XmlReader::getAttributeValue(bool fullyNormalize) {
 }
 
 int XmlReader::getNamespaceId(Span const & prefix) const {
-    if (auto it = cacheNSIds_.find(prefix); it != cacheNSIds_.end())
-    {
-        return it->second;
-    }
-
     auto i = std::find_if(namespaces_.crbegin(), namespaces_.crend(),
         [&prefix](const NamespaceData& rNamespaceData) { return prefix == rNamespaceData.prefix; });
 
     if (i != namespaces_.rend())
-    {
-        cacheNSIds_[i->prefix]= i->nsId;
         return i->nsId;
-    }
 
     return NAMESPACE_UNKNOWN;
 }
@@ -714,10 +706,7 @@ XmlReader::Result XmlReader::handleEndTag() {
 
 void XmlReader::handleElementEnd() {
     assert(!elements_.empty());
-    // remove keys from cache that are no longer valid
     auto end = elements_.top().inheritedNamespaces;
-    for (auto i = end; i < namespaces_.size(); ++i)
-        cacheNSIds_.erase(namespaces_[i].prefix);
     namespaces_.resize(end);
     elements_.pop();
     state_ = elements_.empty() ? State::Done : State::Content;