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- // 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 */
-