new loplugin: unusedmethods

Change-Id: I72574e354aadf357d6d8181a514efb4783e79e28

compilerplugins/clang/unusedmethods.py

@@ -0,0 +1,77 @@
+#!/usr/bin/python
+
+import sys
+
+definitionSet = set()
+callSet = set()
+# things we need to exclude for reasons like :
+# - it's a weird template thingy that confuses the plugin
+exclusionSet = set([
+    "double basegfx::DoubleTraits::maxVal()",
+    "double basegfx::DoubleTraits::minVal()",
+    "double basegfx::DoubleTraits::neutral()",
+    "int basegfx::Int32Traits::maxVal()",
+    "int basegfx::Int32Traits::minVal()",
+    "int basegfx::Int32Traits::neutral()",
+    "unsigned long UniqueIndexImpl::Insert(void *)",
+    # used from a yacc lexer
+    "class rtl::OUString unoidl::detail::SourceProviderType::getName() const",
+    "_Bool unoidl::detail::SourceProviderType::equals(const struct unoidl::detail::SourceProviderType &) const",
+    "_Bool unoidl::detail::SourceProviderEntityPad::isPublished() const",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::checkMemberClashes(int,void *,struct unoidl::detail::SourceProviderScannerData *,const class rtl::OUString &,const class rtl::OUString &,_Bool) const",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::checkBaseClashes(int,void *,struct unoidl::detail::SourceProviderScannerData *,const class rtl::OUString &,const class rtl::Reference<class unoidl::InterfaceTypeEntity> &,_Bool,_Bool,_Bool,class std::__debug::set<class rtl::OUString, struct std::less<class rtl::OUString>, class std::allocator<class rtl::OUString> > *) const",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::addDirectBase(int,void *,struct unoidl::detail::SourceProviderScannerData *,const struct unoidl::detail::SourceProviderInterfaceTypeEntityPad::DirectBase &,_Bool)",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::addBase(int,void *,struct unoidl::detail::SourceProviderScannerData *,const class rtl::OUString &,const class rtl::OUString &,const class rtl::Reference<class unoidl::InterfaceTypeEntity> &,_Bool,_Bool)",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::addDirectMember(int,void *,struct unoidl::detail::SourceProviderScannerData *,const class rtl::OUString &)",
+    "_Bool unoidl::detail::SourceProviderInterfaceTypeEntityPad::addOptionalBaseMembers(int,void *,struct unoidl::detail::SourceProviderScannerData *,const class rtl::OUString &,const class rtl::Reference<class unoidl::InterfaceTypeEntity> &)",
+    "void unoidl::detail::SourceProviderScannerData::setSource(const void *,unsigned long)",
+    # TODO track instantiations of template class constructors
+    "void comphelper::IEventProcessor::release()",
+    # used by Windows build
+    "_Bool basegfx::B2ITuple::equalZero() const",
+    "class basegfx::B2DPolyPolygon basegfx::unotools::UnoPolyPolygon::getPolyPolygonUnsafe() const",
+    ])
+
+
+with open(sys.argv[1]) as txt:
+    for line in txt:
+        if line.startswith("definition:\t"):
+            idx1 = line.find("\t")
+            clazzName = line[idx1+1 : len(line)-1]
+            definitionSet.add(clazzName)
+        elif line.startswith("call:\t"):
+            idx1 = line.find("\t")
+            clazzName = line[idx1+1 : len(line)-1]
+            callSet.add(clazzName)
+
+for clazz in sorted(definitionSet - callSet - exclusionSet):
+    # ignore operators, they are normally called from inside STL code
+    if (clazz.find("::operator") != -1):
+        continue
+    # ignore the custom RTTI stuff
+    if (    (clazz.find("::CreateType()") != -1)
+         or (clazz.find("::IsA(") != -1)
+         or (clazz.find("::Type()") != -1)):
+        continue
+    # if this method is const, and there is a non-const variant of it, and the non-const variant is in use, then leave it alone
+    if (clazz.endswith(" const")
+        and clazz[6:len(clazz)-6] in definitionSet
+        and clazz[6:len(clazz)-6] in callSet):
+       continue
+    # if this method is non-const, and there is a const variant of it, and the const variant is in use, then leave it alone
+    if ((not clazz.endswith(" const"))
+        and ("const " + clazz + " const") in definitionSet
+        and ("const " + clazz + " const") in callSet):
+       continue
+    # There is lots of macro magic going on in /home/noel/libo4/include/sax/fshelper.hxx that should be using C++11 varag templates
+    if clazz.startswith("void sax_fastparser::FastSerializerHelper::"):
+       continue
+    # used by Windows build
+    if clazz.find("DdeTopic::") != -1 or clazz.find("DdeData::") != -1 or clazz.find("DdeService::") != -1:
+       continue
+    print clazz
+
+# add an empty line at the end to make it easier for the unusedmethodsremove plugin to mmap() the output file 
+print
+        
+