Annotation of embedaddon/pcre/pcrecpparg.h.in, revision 1.1
1.1 ! misho 1: // 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: #include <pcre.h>
! 39:
! 40: namespace pcrecpp {
! 41:
! 42: class StringPiece;
! 43:
! 44: // Hex/Octal/Binary?
! 45:
! 46: // Special class for parsing into objects that define a ParseFrom() method
! 47: template <class T>
! 48: class _RE_MatchObject {
! 49: public:
! 50: static inline bool Parse(const char* str, int n, void* dest) {
! 51: if (dest == NULL) return true;
! 52: T* object = reinterpret_cast<T*>(dest);
! 53: return object->ParseFrom(str, n);
! 54: }
! 55: };
! 56:
! 57: class PCRECPP_EXP_DEFN Arg {
! 58: public:
! 59: // Empty constructor so we can declare arrays of Arg
! 60: Arg();
! 61:
! 62: // Constructor specially designed for NULL arguments
! 63: Arg(void*);
! 64:
! 65: typedef bool (*Parser)(const char* str, int n, void* dest);
! 66:
! 67: // Type-specific parsers
! 68: #define PCRE_MAKE_PARSER(type,name) \
! 69: Arg(type* p) : arg_(p), parser_(name) { } \
! 70: Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
! 71:
! 72:
! 73: PCRE_MAKE_PARSER(char, parse_char);
! 74: PCRE_MAKE_PARSER(unsigned char, parse_uchar);
! 75: PCRE_MAKE_PARSER(short, parse_short);
! 76: PCRE_MAKE_PARSER(unsigned short, parse_ushort);
! 77: PCRE_MAKE_PARSER(int, parse_int);
! 78: PCRE_MAKE_PARSER(unsigned int, parse_uint);
! 79: PCRE_MAKE_PARSER(long, parse_long);
! 80: PCRE_MAKE_PARSER(unsigned long, parse_ulong);
! 81: #if @pcre_have_long_long@
! 82: PCRE_MAKE_PARSER(long long, parse_longlong);
! 83: #endif
! 84: #if @pcre_have_ulong_long@
! 85: PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
! 86: #endif
! 87: PCRE_MAKE_PARSER(float, parse_float);
! 88: PCRE_MAKE_PARSER(double, parse_double);
! 89: PCRE_MAKE_PARSER(std::string, parse_string);
! 90: PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
! 91:
! 92: #undef PCRE_MAKE_PARSER
! 93:
! 94: // Generic constructor
! 95: template <class T> Arg(T*, Parser parser);
! 96: // Generic constructor template
! 97: template <class T> Arg(T* p)
! 98: : arg_(p), parser_(_RE_MatchObject<T>::Parse) {
! 99: }
! 100:
! 101: // Parse the data
! 102: bool Parse(const char* str, int n) const;
! 103:
! 104: private:
! 105: void* arg_;
! 106: Parser parser_;
! 107:
! 108: static bool parse_null (const char* str, int n, void* dest);
! 109: static bool parse_char (const char* str, int n, void* dest);
! 110: static bool parse_uchar (const char* str, int n, void* dest);
! 111: static bool parse_float (const char* str, int n, void* dest);
! 112: static bool parse_double (const char* str, int n, void* dest);
! 113: static bool parse_string (const char* str, int n, void* dest);
! 114: static bool parse_stringpiece (const char* str, int n, void* dest);
! 115:
! 116: #define PCRE_DECLARE_INTEGER_PARSER(name) \
! 117: private: \
! 118: static bool parse_ ## name(const char* str, int n, void* dest); \
! 119: static bool parse_ ## name ## _radix( \
! 120: const char* str, int n, void* dest, int radix); \
! 121: public: \
! 122: static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
! 123: static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
! 124: static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
! 125:
! 126: PCRE_DECLARE_INTEGER_PARSER(short);
! 127: PCRE_DECLARE_INTEGER_PARSER(ushort);
! 128: PCRE_DECLARE_INTEGER_PARSER(int);
! 129: PCRE_DECLARE_INTEGER_PARSER(uint);
! 130: PCRE_DECLARE_INTEGER_PARSER(long);
! 131: PCRE_DECLARE_INTEGER_PARSER(ulong);
! 132: PCRE_DECLARE_INTEGER_PARSER(longlong);
! 133: PCRE_DECLARE_INTEGER_PARSER(ulonglong);
! 134:
! 135: #undef PCRE_DECLARE_INTEGER_PARSER
! 136: };
! 137:
! 138: inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
! 139: inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
! 140:
! 141: inline bool Arg::Parse(const char* str, int n) const {
! 142: return (*parser_)(str, n, arg_);
! 143: }
! 144:
! 145: // This part of the parser, appropriate only for ints, deals with bases
! 146: #define MAKE_INTEGER_PARSER(type, name) \
! 147: inline Arg Hex(type* ptr) { \
! 148: return Arg(ptr, Arg::parse_ ## name ## _hex); } \
! 149: inline Arg Octal(type* ptr) { \
! 150: return Arg(ptr, Arg::parse_ ## name ## _octal); } \
! 151: inline Arg CRadix(type* ptr) { \
! 152: return Arg(ptr, Arg::parse_ ## name ## _cradix); }
! 153:
! 154: MAKE_INTEGER_PARSER(short, short) /* */
! 155: MAKE_INTEGER_PARSER(unsigned short, ushort) /* */
! 156: MAKE_INTEGER_PARSER(int, int) /* Don't use semicolons */
! 157: MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
! 158: MAKE_INTEGER_PARSER(long, long) /* because they can cause */
! 159: MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
! 160: #if @pcre_have_long_long@ /* the checking level is */
! 161: MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
! 162: #endif /* */
! 163: #if @pcre_have_ulong_long@ /* */
! 164: MAKE_INTEGER_PARSER(unsigned long long, ulonglong) /* */
! 165: #endif
! 166:
! 167: #undef PCRE_IS_SET
! 168: #undef PCRE_SET_OR_CLEAR
! 169: #undef MAKE_INTEGER_PARSER
! 170:
! 171: } // namespace pcrecpp
! 172:
! 173:
! 174: #endif /* _PCRECPPARG_H */
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