/[pcre]/code/trunk/pcrecpparg.h.in
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Contents of /code/trunk/pcrecpparg.h.in

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Revision 199 - (show annotations) (download)
Tue Jul 31 14:39:09 2007 UTC (7 years, 1 month ago) by ph10
File size: 6830 byte(s)
Daniel's patch for config.h and Windows DLL declarations (not fully working).

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

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