// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#include "llvm-c/BitReader.h"
#include "llvm-c/Core.h"
#include "llvm-c/ExecutionEngine.h"
#include "llvm-c/Object.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Analysis/Lint.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Memory.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Instrumentation.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Vectorize.h"

#define LLVM_VERSION_GE(major, minor) \
  (LLVM_VERSION_MAJOR > (major) ||    \
   LLVM_VERSION_MAJOR == (major) && LLVM_VERSION_MINOR >= (minor))

#define LLVM_VERSION_EQ(major, minor) \
  (LLVM_VERSION_MAJOR == (major) && LLVM_VERSION_MINOR == (minor))

#define LLVM_VERSION_LE(major, minor) \
  (LLVM_VERSION_MAJOR < (major) ||    \
   LLVM_VERSION_MAJOR == (major) && LLVM_VERSION_MINOR <= (minor))

#define LLVM_VERSION_LT(major, minor) (!LLVM_VERSION_GE((major), (minor)))

#include "llvm/IR/LegacyPassManager.h"

#if LLVM_VERSION_GE(4, 0)
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#else
#include "llvm/Bitcode/ReaderWriter.h"
#endif

#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/Linker/Linker.h"

extern "C" void LLVMRustSetLastError(const char *);

enum class LLVMRustResult
{
  Success,
  Failure
};

enum LLVMRustAttribute
{
  AlwaysInline = 0,
  ByVal = 1,
  Cold = 2,
  InlineHint = 3,
  MinSize = 4,
  Naked = 5,
  NoAlias = 6,
  NoCapture = 7,
  NoInline = 8,
  NonNull = 9,
  NoRedZone = 10,
  NoReturn = 11,
  NoUnwind = 12,
  OptimizeForSize = 13,
  OptimizeNone = 14,
  ReadOnly = 15,
  SExt = 16,
  StructRet = 17,
  UWTable = 18,
  ZExt = 19,
  InReg = 20,
  SanitizeThread = 21,
  SanitizeAddress = 22,
  SanitizeMemory = 23,
  ReadNone = 24
};

typedef struct OpaqueRustString *RustStringRef;
typedef struct LLVMOpaqueTwine *LLVMTwineRef;
typedef struct LLVMOpaqueSMDiagnostic *LLVMSMDiagnosticRef;

extern "C" void LLVMRustStringWriteImpl(RustStringRef Str, const char *Ptr,
                                        size_t Size);

class RawRustStringOstream : public llvm::raw_ostream
{
  RustStringRef Str;
  uint64_t Pos;

  void write_impl(const char *Ptr, size_t Size) override
  {
    LLVMRustStringWriteImpl(Str, Ptr, Size);
    Pos += Size;
  }

  uint64_t current_pos() const override { return Pos; }

public:
  explicit RawRustStringOstream(RustStringRef Str) : Str(Str), Pos(0) {}

  ~RawRustStringOstream()
  {
    // LLVM requires this.
    flush();
  }
};