loplugin:unusedmethods

Change-Id: I161cd52606c11b6008f5d8b1d8ee391692f91861
Reviewed-on: https://gerrit.libreoffice.org/19231
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

compilerplugins/clang/unusedmethods.cxx

@@ -251,7 +251,7 @@ bool UnusedMethods::VisitFunctionDecl( const FunctionDecl* functionDecl )
     if (isa<CXXConstructorDecl>(functionDecl)) {
         return true;
     }
-    if (methodDecl && methodDecl->isDeleted()) {
+    if (functionDecl && functionDecl->isDeleted()) {
         return true;
     }
 

compilerplugins/clang/unusedmethods.py

@@ -7,6 +7,7 @@ import io
 definitionSet = set()
 definitionToSourceLocationMap = dict()
 callSet = set()
+sourceLocationSet = set()
 # things we need to exclude for reasons like :
 # - it's a weird template thingy that confuses the plugin
 exclusionSet = set([
@@ -101,6 +102,8 @@ exclusionSet = set([
     "void ImportXE(class SwDoc &,class SwPaM &,const class rtl::OUString &)",
     "_Bool TestImportDOC(const class rtl::OUString &,const class rtl::OUString &)",
     "class vcl::Window * CreateWindow(class VCLXWindow **,const struct com::sun::star::awt::WindowDescriptor *,class vcl::Window *,long)",
+    # only used when the ODBC driver is enabled
+    "_Bool getImplementation(type-parameter-?-? *&,const class com::sun::star::uno::Reference<class com::sun::star::uno::XInterface> &)",
     ])
 
 # clang does not always use exactly the same numbers in the type-parameter vars it generates
@@ -123,6 +126,18 @@ with io.open(sys.argv[1], "rb", buffering=1024*1024) as txt:
             idx1 = line.find("\t",6)
             callSet.add((normalizeTypeParams(line[6:idx1]), normalizeTypeParams(line[idx1+1:].strip())))
 
+# Invert the definitionToSourceLocationMap
+# If we see more than one method at the same sourceLocation, it's being autogenerated as part of a template
+# and we should just ignore
+sourceLocationToDefinitionMap = {}
+for k, v in definitionToSourceLocationMap.iteritems():
+    sourceLocationToDefinitionMap[v] = sourceLocationToDefinitionMap.get(v, [])
+    sourceLocationToDefinitionMap[v].append(k)
+for k, definitions in sourceLocationToDefinitionMap.iteritems():
+    if len(definitions) > 1:
+        for d in definitions:
+            definitionSet.remove(d)
+    
 tmp1set = set()
 for d in definitionSet:
     clazz = d[0] + " " + d[1]
@@ -199,6 +214,8 @@ for d in definitionSet:
     # ignore methods used to dump objects to stream - normally used for debugging
     if d[0] == "class std::basic_ostream<char> &" and d[1].startswith("operator<<(class std::basic_ostream<char> &"):
        continue
+    if d[0] == "basic_ostream<type-parameter-?-?, type-parameter-?-?> &" and d[1].startswith("operator<<(basic_ostream<type-parameter-?-?"):
+       continue
 
     tmp1set.add((clazz, definitionToSourceLocationMap[d]))