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/wpilibc/src/main/native/cpp/Utility.cpp b/wpilibc/src/main/native/cpp/Utility.cpp
new file mode 100644
index 0000000..503b6d0
--- /dev/null
+++ b/wpilibc/src/main/native/cpp/Utility.cpp
@@ -0,0 +1,203 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2008-2018 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 "frc/Utility.h"
+
+#ifndef _WIN32
+#include <cxxabi.h>
+#include <execinfo.h>
+#endif
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+#include <hal/DriverStation.h>
+#include <hal/HAL.h>
+#include <wpi/Path.h>
+#include <wpi/SmallString.h>
+#include <wpi/raw_ostream.h>
+
+#include "frc/ErrorBase.h"
+
+using namespace frc;
+
+bool wpi_assert_impl(bool conditionValue, const wpi::Twine& conditionText,
+ const wpi::Twine& message, wpi::StringRef fileName,
+ int lineNumber, wpi::StringRef funcName) {
+ if (!conditionValue) {
+ wpi::SmallString<128> locBuf;
+ wpi::raw_svector_ostream locStream(locBuf);
+ locStream << funcName << " [" << wpi::sys::path::filename(fileName) << ":"
+ << lineNumber << "]";
+
+ wpi::SmallString<128> errorBuf;
+ wpi::raw_svector_ostream errorStream(errorBuf);
+
+ errorStream << "Assertion \"" << conditionText << "\" ";
+
+ if (message.isTriviallyEmpty() ||
+ (message.isSingleStringRef() && message.getSingleStringRef().empty())) {
+ errorStream << "failed.\n";
+ } else {
+ errorStream << "failed: " << message << "\n";
+ }
+
+ std::string stack = GetStackTrace(2);
+
+ // Print the error and send it to the DriverStation
+ HAL_SendError(1, 1, 0, errorBuf.c_str(), locBuf.c_str(), stack.c_str(), 1);
+ }
+
+ return conditionValue;
+}
+
+/**
+ * Common error routines for wpi_assertEqual_impl and wpi_assertNotEqual_impl.
+ *
+ * This should not be called directly; it should only be used by
+ * wpi_assertEqual_impl and wpi_assertNotEqual_impl.
+ */
+void wpi_assertEqual_common_impl(const wpi::Twine& valueA,
+ const wpi::Twine& valueB,
+ const wpi::Twine& equalityType,
+ const wpi::Twine& message,
+ wpi::StringRef fileName, int lineNumber,
+ wpi::StringRef funcName) {
+ wpi::SmallString<128> locBuf;
+ wpi::raw_svector_ostream locStream(locBuf);
+ locStream << funcName << " [" << wpi::sys::path::filename(fileName) << ":"
+ << lineNumber << "]";
+
+ wpi::SmallString<128> errorBuf;
+ wpi::raw_svector_ostream errorStream(errorBuf);
+
+ errorStream << "Assertion \"" << valueA << " " << equalityType << " "
+ << valueB << "\" ";
+
+ if (message.isTriviallyEmpty() ||
+ (message.isSingleStringRef() && message.getSingleStringRef().empty())) {
+ errorStream << "failed.\n";
+ } else {
+ errorStream << "failed: " << message << "\n";
+ }
+
+ std::string trace = GetStackTrace(3);
+
+ // Print the error and send it to the DriverStation
+ HAL_SendError(1, 1, 0, errorBuf.c_str(), locBuf.c_str(), trace.c_str(), 1);
+}
+
+bool wpi_assertEqual_impl(int valueA, int valueB,
+ const wpi::Twine& valueAString,
+ const wpi::Twine& valueBString,
+ const wpi::Twine& message, wpi::StringRef fileName,
+ int lineNumber, wpi::StringRef funcName) {
+ if (!(valueA == valueB)) {
+ wpi_assertEqual_common_impl(valueAString, valueBString, "==", message,
+ fileName, lineNumber, funcName);
+ }
+ return valueA == valueB;
+}
+
+bool wpi_assertNotEqual_impl(int valueA, int valueB,
+ const wpi::Twine& valueAString,
+ const wpi::Twine& valueBString,
+ const wpi::Twine& message, wpi::StringRef fileName,
+ int lineNumber, wpi::StringRef funcName) {
+ if (!(valueA != valueB)) {
+ wpi_assertEqual_common_impl(valueAString, valueBString, "!=", message,
+ fileName, lineNumber, funcName);
+ }
+ return valueA != valueB;
+}
+
+namespace frc {
+
+int GetFPGAVersion() {
+ int32_t status = 0;
+ int version = HAL_GetFPGAVersion(&status);
+ wpi_setGlobalErrorWithContext(status, HAL_GetErrorMessage(status));
+ return version;
+}
+
+int64_t GetFPGARevision() {
+ int32_t status = 0;
+ int64_t revision = HAL_GetFPGARevision(&status);
+ wpi_setGlobalErrorWithContext(status, HAL_GetErrorMessage(status));
+ return revision;
+}
+
+uint64_t GetFPGATime() {
+ int32_t status = 0;
+ uint64_t time = HAL_GetFPGATime(&status);
+ wpi_setGlobalErrorWithContext(status, HAL_GetErrorMessage(status));
+ return time;
+}
+
+bool GetUserButton() {
+ int32_t status = 0;
+
+ bool value = HAL_GetFPGAButton(&status);
+ wpi_setGlobalError(status);
+
+ return value;
+}
+
+#ifndef _WIN32
+
+/**
+ * Demangle a C++ symbol, used for printing stack traces.
+ */
+static std::string demangle(char const* mangledSymbol) {
+ char buffer[256];
+ size_t length;
+ int32_t status;
+
+ if (std::sscanf(mangledSymbol, "%*[^(]%*[(]%255[^)+]", buffer)) {
+ char* symbol = abi::__cxa_demangle(buffer, nullptr, &length, &status);
+ if (status == 0) {
+ return symbol;
+ } else {
+ // If the symbol couldn't be demangled, it's probably a C function,
+ // so just return it as-is.
+ return buffer;
+ }
+ }
+
+ // If everything else failed, just return the mangled symbol
+ return mangledSymbol;
+}
+
+std::string GetStackTrace(int offset) {
+ void* stackTrace[128];
+ int stackSize = backtrace(stackTrace, 128);
+ char** mangledSymbols = backtrace_symbols(stackTrace, stackSize);
+ wpi::SmallString<1024> buf;
+ wpi::raw_svector_ostream trace(buf);
+
+ for (int i = offset; i < stackSize; i++) {
+ // Only print recursive functions once in a row.
+ if (i == 0 || stackTrace[i] != stackTrace[i - 1]) {
+ trace << "\tat " << demangle(mangledSymbols[i]) << "\n";
+ }
+ }
+
+ std::free(mangledSymbols);
+
+ return trace.str();
+}
+
+#else
+static std::string demangle(char const* mangledSymbol) {
+ return "no demangling on windows";
+}
+
+std::string GetStackTrace(int offset) { return "no stack trace on windows"; }
+#endif
+
+} // namespace frc