//===--- SourceLoc.cpp - SourceLoc and SourceRange implementations --------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//

#include "swift/Basic/SourceLoc.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/SourceMgr.h"
using namespace swift;

void SourceLoc::print(raw_ostream &OS, const llvm::SourceMgr &SM) const {
  if (isInvalid()) {
    OS << "<invalid loc>";
    return;
  }
  int BufferIndex = SM.FindBufferContainingLoc(Value);
  if (BufferIndex == -1) {
    OS << "<malformed loc>";
    return;
  }
  
  const llvm::MemoryBuffer *Buffer = SM.getMemoryBuffer((unsigned)BufferIndex);
  const char *BufferStart = Buffer->getBufferStart();
  OS << Buffer->getBufferIdentifier() << ':'
     << (Value.getPointer() - BufferStart);
}

void SourceLoc::dump(const llvm::SourceMgr &SM) const {
  print(llvm::errs(), SM);
}

void SourceRange::print(raw_ostream &OS, const llvm::SourceMgr &SM) const {
  OS << '[';
  Start.print(OS, SM);
  OS << " - ";
  End.print(OS, SM);
  OS << ']';
  
  if (Start.isInvalid() || End.isInvalid())
    return;
  
  OS << " RangeText=\""
     << StringRef(Start.Value.getPointer(),
                  End.Value.getPointer() - Start.Value.getPointer())
     << '"';
}

void SourceRange::dump(const llvm::SourceMgr &SM) const {
  print(llvm::errs(), SM);
}