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Viewing: /usr/include/pcrecpparg.h
// 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* 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) /* Don't use semicolons */
MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
MAKE_INTEGER_PARSER(long, long) /* because they can cause */
MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
#if 1 /* the checking level is */
MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
#endif /* */
#if 1 /* */
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 */