path: root/lib/Frontend/TextDiagnosticPrinter.cpp

//===--- TextDiagnosticPrinter.cpp - Diagnostic Printer -------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This diagnostic client prints out their diagnostic messages.
//
//===----------------------------------------------------------------------===//

#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Frontend/DiagnosticOptions.h"
#include "clang/Lex/Lexer.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/ADT/SmallString.h"
#include <algorithm>
using namespace clang;

static const enum raw_ostream::Colors noteColor =
  raw_ostream::BLACK;
static const enum raw_ostream::Colors fixitColor =
  raw_ostream::GREEN;
static const enum raw_ostream::Colors caretColor =
  raw_ostream::GREEN;
static const enum raw_ostream::Colors warningColor =
  raw_ostream::MAGENTA;
static const enum raw_ostream::Colors errorColor = raw_ostream::RED;
static const enum raw_ostream::Colors fatalColor = raw_ostream::RED;
// Used for changing only the bold attribute.
static const enum raw_ostream::Colors savedColor =
  raw_ostream::SAVEDCOLOR;

/// \brief Number of spaces to indent when word-wrapping.
const unsigned WordWrapIndentation = 6;

TextDiagnosticPrinter::TextDiagnosticPrinter(raw_ostream &os,
                                             const DiagnosticOptions &diags,
                                             bool _OwnsOutputStream)
  : OS(os), LangOpts(0), DiagOpts(&diags), LastLevel(),
    OwnsOutputStream(_OwnsOutputStream) {
}

TextDiagnosticPrinter::~TextDiagnosticPrinter() {
  if (OwnsOutputStream)
    delete &OS;
}

/// \brief When the source code line we want to print is too long for
/// the terminal, select the "interesting" region.
static void SelectInterestingSourceRegion(std::string &SourceLine,
                                          std::string &CaretLine,
                                          std::string &FixItInsertionLine,
                                          unsigned EndOfCaretToken,
                                          unsigned Columns) {
  unsigned MaxSize = std::max(SourceLine.size(),
                              std::max(CaretLine.size(), 
                                       FixItInsertionLine.size()));
  if (MaxSize > SourceLine.size())
    SourceLine.resize(MaxSize, ' ');
  if (MaxSize > CaretLine.