| // 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 */ |