| //== CheckerContext.cpp - Context info for path-sensitive checkers-----------=// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines CheckerContext that provides contextual info for |
| // path-sensitive checkers. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h" |
| #include "clang/Basic/Builtins.h" |
| |
| using namespace clang; |
| using namespace ento; |
| |
| const FunctionDecl *CheckerContext::getCalleeDecl(const CallExpr *CE) const { |
| const ProgramState *State = getState(); |
| const Expr *Callee = CE->getCallee(); |
| SVal L = State->getSVal(Callee, Pred->getLocationContext()); |
| return L.getAsFunctionDecl(); |
| } |
| |
| StringRef CheckerContext::getCalleeName(const FunctionDecl *FunDecl) const { |
| if (!FunDecl) |
| return StringRef(); |
| IdentifierInfo *funI = FunDecl->getIdentifier(); |
| if (!funI) |
| return StringRef(); |
| return funI->getName(); |
| } |
| |
| |
| bool CheckerContext::isCLibraryFunction(const FunctionDecl *FD, |
| StringRef Name){ |
| // To avoid false positives (Ex: finding user defined functions with |
| // similar names), only perform fuzzy name matching when it's a builtin. |
| // Using a string compare is slow, we might want to switch on BuiltinID here. |
| unsigned BId = FD->getBuiltinID(); |
| if (BId != 0) { |
| ASTContext &Context = getASTContext(); |
| StringRef BName = Context.BuiltinInfo.GetName(BId); |
| if (StringRef(BName).find(Name) != StringRef::npos) |
| return true; |
| } |
| |
| if (FD->isExternC() && FD->getIdentifier()->getName().equals(Name)) |
| return true; |
| |
| return false; |
| } |