tools/gn/string_utils.h

// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TOOLS_GN_STRING_UTILS_H_
#define TOOLS_GN_STRING_UTILS_H_

#include "base/strings/string_piece.h"

class Err;
class Scope;
class Token;
class Value;

inline std::string operator+(const std::string& a, const base::StringPiece& b) {
  std::string ret;
  ret.reserve(a.size() + b.size());
  ret.assign(a);
  ret.append(b.data(), b.size());
  return ret;
}

inline std::string operator+(const base::StringPiece& a, const std::string& b) {
  std::string ret;
  ret.reserve(a.size() + b.size());
  ret.assign(a.data(), a.size());
  ret.append(b);
  return ret;
}

// Unescapes and expands variables in the given literal, writing the result
// to the given value. On error, sets |err| and returns false.
bool ExpandStringLiteral(Scope* scope,
                         const Token& literal,
                         Value* result,
                         Err* err);

#endif  // TOOLS_GN_STRING_UTILS_H_