Squashed 'third_party/allwpilib_2019/' content from commit bd05dfa1c

Change-Id: I2b1c2250cdb9b055133780c33593292098c375b7
git-subtree-dir: third_party/allwpilib_2019
git-subtree-split: bd05dfa1c7cca74c4fac451e7b9d6a37e7b53447
diff --git a/hal/src/main/native/sim/AnalogOutput.cpp b/hal/src/main/native/sim/AnalogOutput.cpp
new file mode 100644
index 0000000..2e3a348
--- /dev/null
+++ b/hal/src/main/native/sim/AnalogOutput.cpp
@@ -0,0 +1,102 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "hal/AnalogOutput.h"
+
+#include "HALInitializer.h"
+#include "PortsInternal.h"
+#include "hal/Errors.h"
+#include "hal/handles/HandlesInternal.h"
+#include "hal/handles/IndexedHandleResource.h"
+#include "mockdata/AnalogOutDataInternal.h"
+
+using namespace hal;
+
+namespace {
+struct AnalogOutput {
+  uint8_t channel;
+};
+}  // namespace
+
+static IndexedHandleResource<HAL_AnalogOutputHandle, AnalogOutput,
+                             kNumAnalogOutputs, HAL_HandleEnum::AnalogOutput>*
+    analogOutputHandles;
+
+namespace hal {
+namespace init {
+void InitializeAnalogOutput() {
+  static IndexedHandleResource<HAL_AnalogOutputHandle, AnalogOutput,
+                               kNumAnalogOutputs, HAL_HandleEnum::AnalogOutput>
+      aoH;
+  analogOutputHandles = &aoH;
+}
+}  // namespace init
+}  // namespace hal
+
+extern "C" {
+HAL_AnalogOutputHandle HAL_InitializeAnalogOutputPort(HAL_PortHandle portHandle,
+                                                      int32_t* status) {
+  hal::init::CheckInit();
+  int16_t channel = getPortHandleChannel(portHandle);
+  if (channel == InvalidHandleIndex) {
+    *status = PARAMETER_OUT_OF_RANGE;
+    return HAL_kInvalidHandle;
+  }
+
+  HAL_AnalogOutputHandle handle =
+      analogOutputHandles->Allocate(channel, status);
+
+  if (*status != 0)
+    return HAL_kInvalidHandle;  // failed to allocate. Pass error back.
+
+  auto port = analogOutputHandles->Get(handle);
+  if (port == nullptr) {  // would only error on thread issue
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+
+  port->channel = static_cast<uint8_t>(channel);
+
+  // Initialize sim analog input
+  SimAnalogOutData[channel].initialized = true;
+  return handle;
+}
+
+void HAL_FreeAnalogOutputPort(HAL_AnalogOutputHandle analogOutputHandle) {
+  // no status, so no need to check for a proper free.
+  auto port = analogOutputHandles->Get(analogOutputHandle);
+  if (port == nullptr) return;
+  analogOutputHandles->Free(analogOutputHandle);
+  SimAnalogOutData[port->channel].initialized = false;
+}
+
+HAL_Bool HAL_CheckAnalogOutputChannel(int32_t channel) {
+  return channel < kNumAnalogOutputs && channel >= 0;
+}
+
+void HAL_SetAnalogOutput(HAL_AnalogOutputHandle analogOutputHandle,
+                         double voltage, int32_t* status) {
+  auto port = analogOutputHandles->Get(analogOutputHandle);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+
+  SimAnalogOutData[port->channel].voltage = voltage;
+}
+
+double HAL_GetAnalogOutput(HAL_AnalogOutputHandle analogOutputHandle,
+                           int32_t* status) {
+  auto port = analogOutputHandles->Get(analogOutputHandle);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return 0.0;
+  }
+
+  return SimAnalogOutData[port->channel].voltage;
+}
+}  // extern "C"