Method getValueAsReal

lib/constantanalysis/ASTValue.cpp:169–208

}

std::string ASTValue::getValueAsReal(const Expr &E,
                                     const ASTContext &Ctx) const {

  Expr::EvalResult Result;
  if (!E.EvaluateAsRValue(Result, Ctx)) {

    auto *RE = E.IgnoreCasts();
    if (!RE || !isa<DeclRefExpr>(RE))
      return "";

    auto &DRE = *dyn_cast<DeclRefExpr>(RE);
    RE = getValueExpr(DRE, Ctx);
    if (!RE || !RE->EvaluateAsRValue(Result, Ctx)) {
      return "";
    }
  }

  auto T = E.getType();
  assert(T.getTypePtrOrNull() && "Unexpected Program State");

  auto &Val = Result.Val;
  auto Value = Val.getAsString(Ctx, T);

  if (T->isFloatingType()) {
    try {
      Value = std::to_string(std::stod(Value));
    }
    // TODO: Try to handle this exception
    catch (std::exception &E) {
      return "";
    }
  } else if (T->isBooleanType()) {
    if (Value == "true")
      Value = "1";
    if (Value == "false")
      Value = "0";
  }

  return Value;
}

std::string ASTValue::getValueAsString(const Expr &E,
                                       const ASTContext &Ctx) const {