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//== 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"
#include "clang/Lex/Lexer.h"
using namespace clang;
using namespace ento;
const FunctionDecl *CheckerContext::getCalleeDecl(const CallExpr *CE) const {
ProgramStateRef 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;
}
StringRef CheckerContext::getMacroNameOrSpelling(SourceLocation &Loc) {
if (Loc.isMacroID())
return Lexer::getImmediateMacroName(Loc, getSourceManager(),
getLangOptions());
SmallVector<char, 16> buf;
return Lexer::getSpelling(Loc, buf, getSourceManager(), getLangOptions());
}
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