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  #   ˆl–äY>” ”ÔD¨ 	¥³q©‹FÿÇƒq×™ÆÂÊ     // Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Sanjay Ghemawat

#ifndef _PCRECPPARG_H
#define _PCRECPPARG_H

#include <stdlib.h>    // for NULL
#include <string>

#include <pcre.h>

namespace pcrecpp {

class StringPiece;

// Hex/Octal/Binary?

// Special class for parsing into objects that define a ParseFrom() method
template <class T>
class _RE_MatchObject {
 public:
  static inline bool Parse(const char* str, int n, void* dest) {
    if (dest == NULL) return true;
    T* object = reinterpret_cast<T*>(dest);
    return object->ParseFrom(str, n);
  }
};

class PCRECPP_EXP_DEFN Arg {
 public:
  // Empty constructor so we can declare arrays of Arg
  Arg();

  // Constructor specially designed for NULL arguments
  Arg(void*);

  typedef bool (*Parser)(const char* str, int n, void* dest);

// Type-specific parsers
#define PCRE_MAKE_PARSER(type,name)                             \
  Arg(type* p) : arg_(p), parser_(name) { }                     \
  Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }


  PCRE_MAKE_PARSER(char,               parse_char);
  PCRE_MAKE_PARSER(unsigned char,      parse_uchar);
  PCRE_MAKE_PARSER(short,              parse_short);
  PCRE_MAKE_PARSER(unsigned short,     parse_ushort);
  PCRE_MAKE_PARSER(int,                parse_int);
  PCRE_MAKE_PARSER(unsigned int,       parse_uint);
  PCRE_MAKE_PARSER(long,               parse_long);
  PCRE_MAKE_PARSER(unsigned long,      parse_ulong);
#if 1
  PCRE_MAKE_PARSER(long long,          parse_longlong);
#endif
#if 1
  PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
#endif
  PCRE_MAKE_PARSER(float,              parse_float);
  PCRE_MAKE_PARSER(double,             parse_double);
  PCRE_MAKE_PARSER(std::string,        parse_string);
  PCRE_MAKE_PARSER(StringPiece,        parse_stringpiece);

#undef PCRE_MAKE_PARSER

  // Generic constructor
  template <class T> Arg(T*, Parser parser);
  // Generic constructor template
  template <class T> Arg(T* p)
    : arg_(p), parser_(_RE_MatchObject<T>::Parse) {
  }

  // Parse the data
  bool Parse(const char* str, int n) const;

 private:
  void*         arg_;
  Parser        parser_;

  static bool parse_null          (const char* str, int n, void* dest);
  static bool parse_char          (const char* str, int n, void* dest);
  static bool parse_uchar         (const char* str, int n, void* dest);
  static bool parse_float         (const char* str, int n, void* dest);
  static bool parse_double        (const char* str, int n, void* d