Remove unused code.

src/common/time/TimeUtils.cpp

@@ -205,21 +205,21 @@ StatusOr<Value> TimeUtils::toTimestamp(const Value &val) {
 }
 
 /*static*/ StatusOr<DateTime> TimeUtils::parseDateTime(const std::string &str) {
-  auto p = DatetimeReader::makeDateTimeReader();
+  auto p = DatetimeReader();
   auto result = p.readDatetime(str);
   NG_RETURN_IF_ERROR(result);
   return result.value();
 }
 
 /*static*/ StatusOr<Date> TimeUtils::parseDate(const std::string &str) {
-  auto p = DatetimeReader::makeDateReader();
+  auto p = DatetimeReader();
   auto result = p.readDate(str);
   NG_RETURN_IF_ERROR(result);
   return result.value();
 }
 
 /*static*/ StatusOr<Time> TimeUtils::parseTime(const std::string &str) {
-  auto p = DatetimeReader::makeTimeReader();
+  auto p = DatetimeReader();
   return p.readTime(str);
 }
 

src/common/time/parser/DatetimeReader.cpp

@@ -8,7 +8,7 @@
 namespace nebula {
 namespace time {
 
-DatetimeReader::DatetimeReader(Type type) : parser_(scanner_, error_, &dt_, type) {
+DatetimeReader::DatetimeReader() : parser_(scanner_, error_, &dt_) {
   // Callback invoked by DatetimeScanner
   auto readBuffer = [this](char *buf, int maxSize) -> int {
     // Reach the end

src/common/time/parser/DatetimeReader.h

@@ -16,22 +16,12 @@ namespace time {
 
 class DatetimeReader {
  public:
+  DatetimeReader();
+
   ~DatetimeReader() {
     if (dt_ != nullptr) delete dt_;
   }
 
-  static inline DatetimeReader makeDateReader() {
-    return DatetimeReader(Type::kDate);
-  }
-
-  static inline DatetimeReader makeTimeReader() {
-    return DatetimeReader(Type::kTime);
-  }
-
-  static inline DatetimeReader makeDateTimeReader() {
-    return DatetimeReader(Type::kDateTime);
-  }
-
   StatusOr<DateTime> readDatetime(std::string input) {
     input = kDatetimePrefix + input;
     return read(std::move(input));
@@ -52,8 +42,6 @@ class DatetimeReader {
   }
 
  private:
-  explicit DatetimeReader(Type type);
-
   StatusOr<DateTime> read(std::string input);
 
   std::string buffer_;

src/common/time/parser/datetime_parser.yy

@@ -8,7 +8,6 @@
 %parse-param { nebula::time::DatetimeScanner& scanner }
 %parse-param { std::string &errmsg }
 %parse-param { nebula::DateTime** output }
-%parse-param { nebula::time::Type outputType }
 
 %code requires {
 #include <iostream>
@@ -23,12 +22,6 @@
 namespace nebula {
 namespace time {
 class DatetimeScanner;
-
-enum class Type {
-  kDate,
-  kTime,
-  kDateTime,
-};
 }
 }