Edit File: 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 */
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