Method FormatLiteral

testutil/expr_printer.cc:272–302

  }

  std::string FormatLiteral(const Constant& c) {
    switch (c.kind_case()) {
      case ConstantKindCase::kBool:
        return absl::StrFormat("%s", c.bool_value() ? "true" : "false");
      case ConstantKindCase::kBytes:
        return cel::internal::FormatDoubleQuotedBytesLiteral(c.bytes_value());
      case ConstantKindCase::kDouble: {
        std::string s = absl::StrFormat("%f", c.double_value());
        // remove trailing zeros, i.e., convert 1.600000 to just 1.6 without
        // forcing a specific precision. There seems to be no flag to get this
        // directly from absl::StrFormat.
        auto idx = std::find_if_not(s.rbegin(), s.rend(),
                                    [](const char c) { return c == '0'; });
        s.erase(idx.base(), s.end());
        if (absl::EndsWith(s, ".")) {
          s += '0';
        }
        return s;
      }
      case ConstantKindCase::kInt:
        return absl::StrFormat("%d", c.int_value());
      case ConstantKindCase::kString:
        return cel::internal::FormatDoubleQuotedStringLiteral(c.string_value());
      case ConstantKindCase::kUint:
        return absl::StrFormat("%uu", c.uint_value());
      case ConstantKindCase::kNull:
        return "null";
      default:
        return "<<ERROR>>";
    }
  }

  std::string s_;
  const ExpressionAdorner& adorner_;