[analyzer] Refactor checkers to use helper function for getting callee Decl and name.

We are getting name of the called function or it's declaration in a few checkers. Refactor them to use the helper function in the CheckerContext. 

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145576 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/StaticAnalyzer/Core/CheckerContext.cpp b/lib/StaticAnalyzer/Core/CheckerContext.cpp
index 75cb82a67c..5552a991d1 100644
--- a/lib/StaticAnalyzer/Core/CheckerContext.cpp
+++ b/lib/StaticAnalyzer/Core/CheckerContext.cpp
@@ -16,12 +16,15 @@
 using namespace clang;
 using namespace ento;
 
-StringRef CheckerContext::getCalleeName(const CallExpr *CE) const {
+const FunctionDecl *CheckerContext::getCalleeDecl(const CallExpr *CE) const {
   const ProgramState *State = getState();
   const Expr *Callee = CE->getCallee();
   SVal L = State->getSVal(Callee);
+  return L.getAsFunctionDecl();
+}
 
-  const FunctionDecl *funDecl = L.getAsFunctionDecl();
+StringRef CheckerContext::getCalleeName(const CallExpr *CE) const {
+  const FunctionDecl *funDecl = getCalleeDecl(CE);
   if (!funDecl)
     return StringRef();
   IdentifierInfo *funI = funDecl->getIdentifier();