//===- IRBindings.cpp - Additional bindings for ir ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines additional C bindings for the ir component.
//
//===----------------------------------------------------------------------===//

#include "IRBindings.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"

using namespace llvm;

LLVMMetadataRef LLVMConstantAsMetadata(LLVMValueRef C) {
  return wrap(ConstantAsMetadata::get(unwrap<Constant>(C)));
}

LLVMMetadataRef LLVMMDString2(LLVMContextRef C, const char *Str, unsigned SLen) {
  return wrap(MDString::get(*unwrap(C), StringRef(Str, SLen)));
}

LLVMMetadataRef LLVMMDNode2(LLVMContextRef C, LLVMMetadataRef *MDs,
                            unsigned Count) {
  return wrap(
      MDNode::get(*unwrap(C), ArrayRef<Metadata *>(unwrap(MDs), Count)));
}

void LLVMAddNamedMetadataOperand2(LLVMModuleRef M, const char *name,
                                  LLVMMetadataRef Val) {
  NamedMDNode *N = unwrap(M)->getOrInsertNamedMetadata(name);
  if (!N)
    return;
  if (!Val)
    return;
  N->addOperand(unwrap<MDNode>(Val));
}

void LLVMSetMetadata2(LLVMValueRef Inst, unsigned KindID, LLVMMetadataRef MD) {
  MDNode *N = MD ? unwrap<MDNode>(MD) : nullptr;
  unwrap<Instruction>(Inst)->setMetadata(KindID, N);
}

void LLVMGoSetCurrentDebugLocation(LLVMBuilderRef Bref, unsigned Line,
                                  unsigned Col, LLVMMetadataRef Scope,
                                  LLVMMetadataRef InlinedAt) {
  if (!Scope)
    unwrap(Bref)->SetCurrentDebugLocation(DebugLoc());
  else
    unwrap(Bref)->SetCurrentDebugLocation(DILocation::get(
        unwrap<MDNode>(Scope)->getContext(), Line, Col, unwrap<MDNode>(Scope),
        InlinedAt ? unwrap<MDNode>(InlinedAt) : nullptr));
}

LLVMDebugLocMetadata LLVMGoGetCurrentDebugLocation(LLVMBuilderRef Bref) {
  const auto& Loc = unwrap(Bref)->getCurrentDebugLocation();
  const auto* InlinedAt = Loc.getInlinedAt();
  const LLVMDebugLocMetadata md{
    Loc.getLine(),
    Loc.getCol(),
    wrap(Loc.getScope()),
    InlinedAt == nullptr ? nullptr : wrap(InlinedAt->getRawInlinedAt()),
  };
  return md;
}