[wpiutil] Remove LEB128 (#7628)

This was only used for NT3.

wpiutil/src/main/native/include/wpi/leb128.h

@@ -1,111 +0,0 @@
-// Copyright (c) FIRST and other WPILib contributors.
-// Open Source Software; you can modify and/or share it under the terms of
-// the WPILib BSD license file in the root directory of this project.
-
-#ifndef WPIUTIL_WPI_LEB128_H_
-#define WPIUTIL_WPI_LEB128_H_
-
-#include <stdint.h>
-
-#include <optional>
-#include <span>
-
-namespace wpi {
-
-template <typename T>
-class SmallVectorImpl;
-class raw_istream;
-class raw_ostream;
-
-/**
- * Get size of unsigned LEB128 data.
- *
- * Determine the number of bytes required to encode an unsigned LEB128 datum.
- * The algorithm is taken from Appendix C of the DWARF 3 spec. For information
- * on the encodings refer to section "7.6 - Variable Length Data". Return
- * the number of bytes required.
- *
- * @param val LEB128 data.
- */
-uint64_t SizeUleb128(uint64_t val);
-
-/**
- * Write unsigned LEB128 data.
- *
- * Encode an unsigned LEB128 encoded datum. The algorithm is taken
- * from Appendix C of the DWARF 3 spec. For information on the
- * encodings refer to section "7.6 - Variable Length Data". Return
- * the number of bytes written.
- *
- * @param dest The address where the ULEB128 data is to be stored.
- * @param val Value to be stored.
- */
-uint64_t WriteUleb128(SmallVectorImpl<char>& dest, uint64_t val);
-
-/**
- * Write unsigned LEB128 data.
- *
- * Encode an unsigned LEB128 encoded datum. The algorithm is taken
- * from Appendix C of the DWARF 3 spec. For information on the
- * encodings refer to section "7.6 - Variable Length Data".
- *
- * @param os Output stream.
- * @param val Value to be stored.
- */
-void WriteUleb128(raw_ostream& os, uint64_t val);
-
-/**
- * Read unsigned LEB128 data.
- *
- * Decode an unsigned LEB128 encoded datum. The algorithm is taken
- * from Appendix C of the DWARF 3 spec. For information on the
- * encodings refer to section "7.6 - Variable Length Data". Return
- * the number of bytes read.
- *
- * @param addr The address where the ULEB128 data is stored.
- * @param ret Address to store the result.
- */
-uint64_t ReadUleb128(const char* addr, uint64_t* ret);
-
-/**
- * Read unsigned LEB128 data from a stream.
- *
- * Decode an unsigned LEB128 encoded datum. The algorithm is taken
- * from Appendix C of the DWARF 3 spec. For information on the
- * encodings refer to section "7.6 - Variable Length Data". Return
- * false on stream error, true on success.
- *
- * @param is The input stream where the ULEB128 data is to be read from.
- * @param ret Address to store the result.
- */
-bool ReadUleb128(raw_istream& is, uint64_t* ret);
-
-/**
- * Unsigned LEB128 streaming reader.
- *
- * Decode an unsigned LEB128 encoded datum. The algorithm is taken
- * from Appendix C of the DWARF 3 spec. For information on the
- * encodings refer to section "7.6 - Variable Length Data".
- */
-class Uleb128Reader {
- public:
-  /**
-   * Decode a single ULEB128 value.  Returns after a single ULEB128 value has
-   * been read or insufficient input (call in a loop to get multiple values).
-   * If a value is returned, internal state is reset so it's safe to immediately
-   * call this function again to decode another value.
-   *
-   * @param in Input data; modified as data is consumed (any unconsumed data
-   *           is left when function returns).
-   * @return value (in std::optional)
-   */
-  std::optional<uint64_t> ReadOne(std::span<const uint8_t>* in);
-
- private:
-  uint64_t m_result = 0;
-  int m_shift = 0;
-};
-
-}  // namespace wpi
-
-#endif  // WPIUTIL_WPI_LEB128_H_