Add newer DriverStation methods to ahal

Change-Id: I30c5bf4ccbf72cb135dedc08ef7ee23e101c90fc
Signed-off-by: Lee Mracek <lee@valkyrierobotics.com>
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/frc971/wpilib/ahal/DriverStation.cc b/frc971/wpilib/ahal/DriverStation.cc
index 2ed0a97..8b31af7 100644
--- a/frc971/wpilib/ahal/DriverStation.cc
+++ b/frc971/wpilib/ahal/DriverStation.cc
@@ -272,6 +272,54 @@
 }
 
 /**
+  * Returns the game specific message provided by the FMS.
+  *
+  * @return A string containing the game specific message.
+  */
+std::string_view DriverStation::GetGameSpecificMessage() const {
+  return std::string_view(
+      reinterpret_cast<const char *>(info_.gameSpecificMessage),
+      info_.gameSpecificMessageSize);
+}
+
+/**
+  * Returns the name of the competition event provided by the FMS.
+  *
+  * @return A string containing the event name
+  */
+std::string_view DriverStation::GetEventName() const {
+  return info_.eventName;
+}
+
+/**
+  * Returns the match number provided by the FMS.
+  *
+  * @return The number of the match
+  */
+DriverStation::MatchType DriverStation::GetMatchType() const {
+  return static_cast<DriverStation::MatchType>(info_.matchType);
+}
+
+/**
+  * Returns the match number provided by the FMS.
+  *
+  * @return The number of the match
+  */
+int DriverStation::GetMatchNumber() const {
+  return info_.matchNumber;
+}
+
+/**
+  * Returns the number of times the current match has been replayed from the
+  * FMS.
+  *
+  * @return The number of replays
+  */
+int DriverStation::GetReplayNumber() const {
+  return info_.replayNumber;
+}
+
+/**
  * Return the alliance that the driver station says it is on.
  *
  * This could return kRed or kBlue.
@@ -374,10 +422,14 @@
 
   HAL_ControlWord control_word;
   HAL_GetControlWord(&control_word);
-  is_enabled_ = control_word.enabled;
+  is_enabled_ = control_word.enabled && control_word.dsAttached;
   is_autonomous_ = control_word.autonomous;
   is_test_mode_ = control_word.test;
   is_fms_attached_ = control_word.fmsAttached;
+  is_ds_attached_ = control_word.dsAttached;
+  is_teleop_ = !(control_word.autonomous || control_word.test);
+
+  HAL_GetMatchInfo(&info_);
 }
 
 /**
diff --git a/frc971/wpilib/ahal/DriverStation.h b/frc971/wpilib/ahal/DriverStation.h
index 5150360..8bcdcf1 100644
--- a/frc971/wpilib/ahal/DriverStation.h
+++ b/frc971/wpilib/ahal/DriverStation.h
@@ -27,6 +27,7 @@
 class DriverStation {
  public:
   enum Alliance { kRed, kBlue, kInvalid };
+  enum MatchType { kNone, kPractice, kQualification, kElimination };
 
   virtual ~DriverStation();
   static DriverStation &GetInstance();
@@ -55,10 +56,18 @@
   bool IsTestMode() const { return is_test_mode_; }
   bool IsFmsAttached() const { return is_fms_attached_; }
   bool IsAutonomous() const { return is_autonomous_; }
+  bool IsTeleop() const { return is_teleop_; }
+  bool IsDSAttached() const { return is_ds_attached_; }
 
   bool IsSysActive() const;
   bool IsBrownedOut() const;
 
+  std::string_view GetGameSpecificMessage() const;
+
+  std::string_view GetEventName() const;
+  MatchType GetMatchType() const;
+  int GetMatchNumber() const;
+  int GetReplayNumber() const;
   Alliance GetAlliance() const;
   int GetLocation() const;
   double GetMatchTime() const;
@@ -88,6 +97,11 @@
   bool is_test_mode_ = false;
   bool is_autonomous_ = false;
   bool is_fms_attached_ = false;
+  bool is_teleop_ = false;
+  bool is_ds_attached_ = false;
+
+  // statically allocated match info so we can return string_views into it.
+  HAL_MatchInfo info_;
 };
 
 }  // namespace frc