code/trunk/pcrecpparg.h.in

// 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>

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) {
    T* object = reinterpret_cast<T*>(dest);
    return object->ParseFrom(str, n);
  }
};

class 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 @pcre_have_long_long@
  PCRE_MAKE_PARSER(long long,          parse_longlong);
#endif
#if @pcre_have_ulong_long@
  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* dest);
  static bool parse_string        (const char* str, int n, void* dest);
  static bool parse_stringpiece   (const char* str, int n, void* dest);

#define PCRE_DECLARE_INTEGER_PARSER(name)                                   \
 private:                                                                   \
  static bool parse_ ## name(const char* str, int n, void* dest);           \
  static bool parse_ ## name ## _radix(                                     \
    const char* str, int n, void* dest, int radix);                         \
 public:                                                                    \
  static bool parse_ ## name ## _hex(const char* str, int n, void* dest);   \
  static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
  static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)

  PCRE_DECLARE_INTEGER_PARSER(short);
  PCRE_DECLARE_INTEGER_PARSER(ushort);
  PCRE_DECLARE_INTEGER_PARSER(int);
  PCRE_DECLARE_INTEGER_PARSER(uint);
  PCRE_DECLARE_INTEGER_PARSER(long);
  PCRE_DECLARE_INTEGER_PARSER(ulong);
  PCRE_DECLARE_INTEGER_PARSER(longlong);
  PCRE_DECLARE_INTEGER_PARSER(ulonglong);

#undef PCRE_DECLARE_INTEGER_PARSER
};

inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }

inline bool Arg::Parse(const char* str, int n) const {
  return (*parser_)(str, n, arg_);
}

// This part of the parser, appropriate only for ints, deals with bases
#define MAKE_INTEGER_PARSER(type, name) \
  inline Arg Hex(type* ptr) { \
    return Arg(ptr, Arg::parse_ ## name ## _hex); } \
  inline Arg Octal(type* ptr) { \
    return Arg(ptr, Arg::parse_ ## name ## _octal); } \
  inline Arg CRadix(type* ptr) { \
    return Arg(ptr, Arg::parse_ ## name ## _cradix); }

MAKE_INTEGER_PARSER(short,              short);
MAKE_INTEGER_PARSER(unsigned short,     ushort);
MAKE_INTEGER_PARSER(int,                int);
MAKE_INTEGER_PARSER(unsigned int,       uint);
MAKE_INTEGER_PARSER(long,               long);
MAKE_INTEGER_PARSER(unsigned long,      ulong);
#if @pcre_have_long_long@
MAKE_INTEGER_PARSER(long long,          longlong);
#endif
#if @pcre_have_ulong_long@
MAKE_INTEGER_PARSER(unsigned long long, ulonglong);
#endif

#undef PCRE_IS_SET
#undef PCRE_SET_OR_CLEAR
#undef MAKE_INTEGER_PARSER

}   // namespace pcrecpp


#endif /* _PCRECPPARG_H */
1	nigel	87	// Copyright (c) 2005, Google Inc.
2			// All rights reserved.
3			//
4			// Redistribution and use in source and binary forms, with or without
5			// modification, are permitted provided that the following conditions are
6			// met:
7			//
8			// * Redistributions of source code must retain the above copyright
9			// notice, this list of conditions and the following disclaimer.
10			// * Redistributions in binary form must reproduce the above
11			// copyright notice, this list of conditions and the following disclaimer
12			// in the documentation and/or other materials provided with the
13			// distribution.
14			// * Neither the name of Google Inc. nor the names of its
15			// contributors may be used to endorse or promote products derived from
16			// this software without specific prior written permission.
17			//
18			// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19			// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20			// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21			// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22			// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23			// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24			// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25			// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26			// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27			// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28			// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29			//
30			// Author: Sanjay Ghemawat
31
32			#ifndef _PCRECPPARG_H
33			#define _PCRECPPARG_H
34
35			#include <stdlib.h> // for NULL
36			#include <string>
37
38			namespace pcrecpp {
39
40			class StringPiece;
41
42			// Hex/Octal/Binary?
43
44			// Special class for parsing into objects that define a ParseFrom() method
45			template <class T>
46			class _RE_MatchObject {
47			public:
48			static inline bool Parse(const char* str, int n, void* dest) {
49			T* object = reinterpret_cast<T*>(dest);
50			return object->ParseFrom(str, n);
51			}
52			};
53
54			class Arg {
55			public:
56			// Empty constructor so we can declare arrays of Arg
57			Arg();
58
59			// Constructor specially designed for NULL arguments
60			Arg(void*);
61
62			typedef bool (Parser)(const char str, int n, void* dest);
63
64			// Type-specific parsers
65			#define PCRE_MAKE_PARSER(type,name) \
66			Arg(type* p) : arg_(p), parser_(name) { } \
67			Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
68
69
70			PCRE_MAKE_PARSER(char, parse_char);
71			PCRE_MAKE_PARSER(unsigned char, parse_uchar);
72			PCRE_MAKE_PARSER(short, parse_short);
73			PCRE_MAKE_PARSER(unsigned short, parse_ushort);
74			PCRE_MAKE_PARSER(int, parse_int);
75			PCRE_MAKE_PARSER(unsigned int, parse_uint);
76			PCRE_MAKE_PARSER(long, parse_long);
77			PCRE_MAKE_PARSER(unsigned long, parse_ulong);
78			#if @pcre_have_long_long@
79			PCRE_MAKE_PARSER(long long, parse_longlong);
80			#endif
81			#if @pcre_have_ulong_long@
82			PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
83			#endif
84			PCRE_MAKE_PARSER(float, parse_float);
85			PCRE_MAKE_PARSER(double, parse_double);
86			PCRE_MAKE_PARSER(std::string, parse_string);
87			PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
88
89			#undef PCRE_MAKE_PARSER
90
91			// Generic constructor
92			template <class T> Arg(T*, Parser parser);
93			// Generic constructor template
94			template <class T> Arg(T* p)
95			: arg_(p), parser_(_RE_MatchObject<T>::Parse) {
96			}
97
98			// Parse the data
99			bool Parse(const char* str, int n) const;
100
101			private:
102			void* arg_;
103			Parser parser_;
104
105			static bool parse_null (const char* str, int n, void* dest);
106			static bool parse_char (const char* str, int n, void* dest);
107			static bool parse_uchar (const char* str, int n, void* dest);
108			static bool parse_float (const char* str, int n, void* dest);
109			static bool parse_double (const char* str, int n, void* dest);
110			static bool parse_string (const char* str, int n, void* dest);
111			static bool parse_stringpiece (const char* str, int n, void* dest);
112
113			#define PCRE_DECLARE_INTEGER_PARSER(name) \
114			private: \
115			static bool parse_ ## name(const char* str, int n, void* dest); \
116			static bool parse_ ## name ## _radix( \
117			const char* str, int n, void* dest, int radix); \
118			public: \
119			static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
120			static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
121			static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
122
123			PCRE_DECLARE_INTEGER_PARSER(short);
124			PCRE_DECLARE_INTEGER_PARSER(ushort);
125			PCRE_DECLARE_INTEGER_PARSER(int);
126			PCRE_DECLARE_INTEGER_PARSER(uint);
127			PCRE_DECLARE_INTEGER_PARSER(long);
128			PCRE_DECLARE_INTEGER_PARSER(ulong);
129			PCRE_DECLARE_INTEGER_PARSER(longlong);
130			PCRE_DECLARE_INTEGER_PARSER(ulonglong);
131
132			#undef PCRE_DECLARE_INTEGER_PARSER
133			};
134
135			inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
136			inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
137
138			inline bool Arg::Parse(const char* str, int n) const {
139			return (*parser_)(str, n, arg_);
140			}
141
142			// This part of the parser, appropriate only for ints, deals with bases
143			#define MAKE_INTEGER_PARSER(type, name) \
144			inline Arg Hex(type* ptr) { \
145			return Arg(ptr, Arg::parse_ ## name ## _hex); } \
146			inline Arg Octal(type* ptr) { \
147			return Arg(ptr, Arg::parse_ ## name ## _octal); } \
148			inline Arg CRadix(type* ptr) { \
149			return Arg(ptr, Arg::parse_ ## name ## _cradix); }
150
151			MAKE_INTEGER_PARSER(short, short);
152			MAKE_INTEGER_PARSER(unsigned short, ushort);
153			MAKE_INTEGER_PARSER(int, int);
154			MAKE_INTEGER_PARSER(unsigned int, uint);
155			MAKE_INTEGER_PARSER(long, long);
156			MAKE_INTEGER_PARSER(unsigned long, ulong);
157			#if @pcre_have_long_long@
158			MAKE_INTEGER_PARSER(long long, longlong);
159			#endif
160			#if @pcre_have_ulong_long@
161			MAKE_INTEGER_PARSER(unsigned long long, ulonglong);
162			#endif
163
164			#undef PCRE_IS_SET
165			#undef PCRE_SET_OR_CLEAR
166			#undef MAKE_INTEGER_PARSER
167
168			} // namespace pcrecpp
169
170
171			#endif /* _PCRECPPARG_H */