Method getConstVarDecl

lib/astirmap/DebugInfoMap.cpp:217–252

}

VarDecl *DebugInfoMap::getConstVarDecl(ASTDefNode &Node) const {
  auto *Assigned = Node.getAssigned();
  if (!Assigned)
    return nullptr;

  const auto *E = Assigned->getNode().get<Expr>();
  if (!E)
    return nullptr;

  auto &Ctx = Assigned->getASTUnit().getASTContext();
  const VarDecl *Result = nullptr;
  do {
    if (E->IgnoreCasts())
      E = E->IgnoreCasts();

    const auto *DRE = dyn_cast<DeclRefExpr>(E);
    if (!DRE)
      break;

    const auto *VD = DRE->getDecl();
    if (!VD)
      break;
    if (!VD->getType().isConstant(Ctx))
      return nullptr;

    Result = dyn_cast<VarDecl>(VD);
    if (!Result)
      return nullptr;
    if (!Result->hasInit())
      return nullptr;

    E = Result->getInit();
  } while (E);

  return const_cast<VarDecl *>(Result);
}

bool DebugInfoMap::isArgsInMacro(const ASTDefNode &Node, Expr &E,
                                 unsigned ArgNo, ASTUnit &U) const {