refs #10663 - Library: pre-calculate if Container::startPattern starts with std::

Author: firewave

lib/library.cpp

@@ -619,6 +619,7 @@ Library::Error Library::load(const tinyxml2::XMLDocument &doc)
                 container.startPattern2 = startPattern;
                 if (!endsWith(container.startPattern, '<'))
                     container.startPattern2 += " !!::";
+                container.startPatternHasStd = startsWith(container.startPattern2, "std :: ");
             }
             const char* const endPattern = node->Attribute("endPattern");
             if (endPattern)
@@ -1402,11 +1403,10 @@ const Library::Container* Library::detectContainerInternal(const Token* const ty
         if (container.startPattern.empty())
             continue;
 
-        const bool startsWithStd = startsWith(container.startPattern2, "std :: ");
-        if (startsWithStd && !withoutStd && !hasScope)
+        if (container.startPatternHasStd && !withoutStd && !hasScope)
             continue;
 
-        const int offset = (withoutStd && startsWithStd) ? 7 : 0;
+        const int offset = (withoutStd && container.startPatternHasStd ) ? 7 : 0;
 
         // If endPattern is undefined, it will always match, but itEndPattern has to be defined.
         if (detect != IteratorOnly && container.endPattern.empty()) {

lib/library.h

@@ -239,6 +239,7 @@ class CPPCHECKLIB Library {
         bool unstableErase{};
         bool unstableInsert{};
         bool view{};
+        bool startPatternHasStd{};
 
         Action getAction(const std::string& function) const {
             const auto i = utils::as_const(functions).find(function);